SPC Day 1 Fire Weather Outlook
Day 1 Fire Weather Outlook
NWS Storm Prediction Center Norman OK
0153 AM CDT Sun May 03 2026
Valid 031200Z - 041200Z
...Synopsis...
Behind the departing eastern US trough, strong northwesterly flow
aloft will develop over the central CONUS north of a cut off low
over the West Coast. A shortwave trough embedded within the
northwest flow will move south out of Canada, deepening a surface
cyclone near the international border. A cold front tied to the low
will also move south with dry conditions and strong winds associated
with it.
...Northern Plains...
An upper-level shortwave trough is forecast to deepen as it moves
out of southern Canada into the northern US today and tonight. At
the surface, an associated low will intensify as it traverses
south-central Canada. The low is forecast to deepen as it moves
eastward across southern Canada, promoting dry and breezy conditions
ahead of a southward progressing cold front. Gusty winds of 20-30
mph are expected, along with RH below 25%. Widespread dry and breezy
conditions over a dry fuelscape should promote elevated fire-weather
potential. Some brief locally critical conditions are also possible
given the stronger gusts over parts of western ND and eastern MT.
However, high clouds and marginal RH value should limit the areal
and temporal extent of the more critical conditions.
...Southern Plains...
Dry and breezy southerly flow is expected over parts of western OK
and the TX Panhandles south of a shortwave trough. South/southwest
gusts of 20-25 mph are possible during the afternoon. Afternoon RH
values are expected to decrease to below 20% near a deepening lee
cyclone. This could support some localized fire-weather concerns in
pockets of dry fuels that have not received recent rainfall nor
transitioned to green up. Notably, a very small region of the far
northeastern TX Panhandle, eastern OK Panhandle, and northwestern OK
have not seen measurable precipitation in the last 30 days with
minimal (if any) transition to green up where high fuel loading
exists. However, high cloud cover throughout the afternoon and the
confined nature of the receptive fuels should limit broader
fire-weather concerns. Still, the gusty winds and dry conditions
will likely support drying of fuels into Days 2 and 3.
..Lyons.. 05/03/2026
...Please see www.spc.noaa.gov/fire for graphic product...
Read more
SPC Day 1 Fire Weather Outlook
Day 1 Fire Weather Outlook
NWS Storm Prediction Center Norman OK
0153 AM CDT Sun May 03 2026
Valid 031200Z - 041200Z
...Synopsis...
Behind the departing eastern US trough, strong northwesterly flow
aloft will develop over the central CONUS north of a cut off low
over the West Coast. A shortwave trough embedded within the
northwest flow will move south out of Canada, deepening a surface
cyclone near the international border. A cold front tied to the low
will also move south with dry conditions and strong winds associated
with it.
...Northern Plains...
An upper-level shortwave trough is forecast to deepen as it moves
out of southern Canada into the northern US today and tonight. At
the surface, an associated low will intensify as it traverses
south-central Canada. The low is forecast to deepen as it moves
eastward across southern Canada, promoting dry and breezy conditions
ahead of a southward progressing cold front. Gusty winds of 20-30
mph are expected, along with RH below 25%. Widespread dry and breezy
conditions over a dry fuelscape should promote elevated fire-weather
potential. Some brief locally critical conditions are also possible
given the stronger gusts over parts of western ND and eastern MT.
However, high clouds and marginal RH value should limit the areal
and temporal extent of the more critical conditions.
...Southern Plains...
Dry and breezy southerly flow is expected over parts of western OK
and the TX Panhandles south of a shortwave trough. South/southwest
gusts of 20-25 mph are possible during the afternoon. Afternoon RH
values are expected to decrease to below 20% near a deepening lee
cyclone. This could support some localized fire-weather concerns in
pockets of dry fuels that have not received recent rainfall nor
transitioned to green up. Notably, a very small region of the far
northeastern TX Panhandle, eastern OK Panhandle, and northwestern OK
have not seen measurable precipitation in the last 30 days with
minimal (if any) transition to green up where high fuel loading
exists. However, high cloud cover throughout the afternoon and the
confined nature of the receptive fuels should limit broader
fire-weather concerns. Still, the gusty winds and dry conditions
will likely support drying of fuels into Days 2 and 3.
..Lyons.. 05/03/2026
...Please see www.spc.noaa.gov/fire for graphic product...
Read more
SPC Day 1 Fire Weather Outlook
Day 1 Fire Weather Outlook
NWS Storm Prediction Center Norman OK
0153 AM CDT Sun May 03 2026
Valid 031200Z - 041200Z
...Synopsis...
Behind the departing eastern US trough, strong northwesterly flow
aloft will develop over the central CONUS north of a cut off low
over the West Coast. A shortwave trough embedded within the
northwest flow will move south out of Canada, deepening a surface
cyclone near the international border. A cold front tied to the low
will also move south with dry conditions and strong winds associated
with it.
...Northern Plains...
An upper-level shortwave trough is forecast to deepen as it moves
out of southern Canada into the northern US today and tonight. At
the surface, an associated low will intensify as it traverses
south-central Canada. The low is forecast to deepen as it moves
eastward across southern Canada, promoting dry and breezy conditions
ahead of a southward progressing cold front. Gusty winds of 20-30
mph are expected, along with RH below 25%. Widespread dry and breezy
conditions over a dry fuelscape should promote elevated fire-weather
potential. Some brief locally critical conditions are also possible
given the stronger gusts over parts of western ND and eastern MT.
However, high clouds and marginal RH value should limit the areal
and temporal extent of the more critical conditions.
...Southern Plains...
Dry and breezy southerly flow is expected over parts of western OK
and the TX Panhandles south of a shortwave trough. South/southwest
gusts of 20-25 mph are possible during the afternoon. Afternoon RH
values are expected to decrease to below 20% near a deepening lee
cyclone. This could support some localized fire-weather concerns in
pockets of dry fuels that have not received recent rainfall nor
transitioned to green up. Notably, a very small region of the far
northeastern TX Panhandle, eastern OK Panhandle, and northwestern OK
have not seen measurable precipitation in the last 30 days with
minimal (if any) transition to green up where high fuel loading
exists. However, high cloud cover throughout the afternoon and the
confined nature of the receptive fuels should limit broader
fire-weather concerns. Still, the gusty winds and dry conditions
will likely support drying of fuels into Days 2 and 3.
..Lyons.. 05/03/2026
...Please see www.spc.noaa.gov/fire for graphic product...
Read more
SPC 0730Z Day 3 Outlook
Day 3 Convective Outlook CORR 1
NWS Storm Prediction Center Norman OK
0146 AM CDT Sun May 03 2026
Valid 051200Z - 061200Z
...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS PORTIONS OF
EASTERN OKLAHOMA...NORTHEAST TEXAS...AND ARKANSAS...
CORRECTED FOR SUMMARY
...SUMMARY...
Isolated to scattered strong to severe storms are possible Tuesday
afternoon and evening across portions of eastern Oklahoma and
northeast Texas into the Mid-South.
...Synopsis...
Deep-layer southwesterly flow will increase across the southern
Plains to the Ohio Valley and Northeast as the upper trough over the
Upper Midwest and northern/central Plains and an upper trough over
the Southwest begin to phase. At the surface, a cold front is
forecast to extend from southern Lower MI to northern OK Tuesday
morning. This boundary will develop slowly southeast through the
period, becoming oriented from NY to the Mid-South to north-central
TX by Wednesday morning. During the afternoon, a dryline will be
oriented across central TX. Ahead of the surface front and east of
the dryline, increasing southerly low-level flow will transport 60s
F dewpoints across the Sabine Valley into AR. The surface front and
dryline will serve as a focus for strong to severe thunderstorm
development during the afternoon/evening.
...OK/TX to the Mid-South...
Convective development is likely near the surface triple point and
cold front by 00z as forcing for ascent impinges on the moist and
moderately unstable airmass in the eastern OK/AR vicinity.
Thunderstorm coverage will likely increase through the evening as a
modest low-level jet develops. Any discrete convection that develops
will pose a risk for large hail and perhaps a tornado or two.
However, convection may become linear along the surface front rather
quickly, with an accompanying increase in damaging wind potential.
Severe potential along the dryline across parts of OK/TX is more
uncertain/conditional. Capping and nebulous large-scale ascent
(especially with southwest extent across TX) may suppress
convection. However, if a storm can develop within the favorable
thermodynamic and kinematic parameter space, large hail will be
possible.
..Leitman.. 05/03/2026
Read more
SPC 0730Z Day 3 Outlook
Day 3 Convective Outlook CORR 1
NWS Storm Prediction Center Norman OK
0146 AM CDT Sun May 03 2026
Valid 051200Z - 061200Z
...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS PORTIONS OF
EASTERN OKLAHOMA...NORTHEAST TEXAS...AND ARKANSAS...
CORRECTED FOR SUMMARY
...SUMMARY...
Isolated to scattered strong to severe storms are possible Tuesday
afternoon and evening across portions of eastern Oklahoma and
northeast Texas into the Mid-South.
...Synopsis...
Deep-layer southwesterly flow will increase across the southern
Plains to the Ohio Valley and Northeast as the upper trough over the
Upper Midwest and northern/central Plains and an upper trough over
the Southwest begin to phase. At the surface, a cold front is
forecast to extend from southern Lower MI to northern OK Tuesday
morning. This boundary will develop slowly southeast through the
period, becoming oriented from NY to the Mid-South to north-central
TX by Wednesday morning. During the afternoon, a dryline will be
oriented across central TX. Ahead of the surface front and east of
the dryline, increasing southerly low-level flow will transport 60s
F dewpoints across the Sabine Valley into AR. The surface front and
dryline will serve as a focus for strong to severe thunderstorm
development during the afternoon/evening.
...OK/TX to the Mid-South...
Convective development is likely near the surface triple point and
cold front by 00z as forcing for ascent impinges on the moist and
moderately unstable airmass in the eastern OK/AR vicinity.
Thunderstorm coverage will likely increase through the evening as a
modest low-level jet develops. Any discrete convection that develops
will pose a risk for large hail and perhaps a tornado or two.
However, convection may become linear along the surface front rather
quickly, with an accompanying increase in damaging wind potential.
Severe potential along the dryline across parts of OK/TX is more
uncertain/conditional. Capping and nebulous large-scale ascent
(especially with southwest extent across TX) may suppress
convection. However, if a storm can develop within the favorable
thermodynamic and kinematic parameter space, large hail will be
possible.
..Leitman.. 05/03/2026
Read more
SPC 0730Z Day 3 Outlook
Day 3 Convective Outlook CORR 1
NWS Storm Prediction Center Norman OK
0146 AM CDT Sun May 03 2026
Valid 051200Z - 061200Z
...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS PORTIONS OF
EASTERN OKLAHOMA...NORTHEAST TEXAS...AND ARKANSAS...
CORRECTED FOR SUMMARY
...SUMMARY...
Isolated to scattered strong to severe storms are possible Tuesday
afternoon and evening across portions of eastern Oklahoma and
northeast Texas into the Mid-South.
...Synopsis...
Deep-layer southwesterly flow will increase across the southern
Plains to the Ohio Valley and Northeast as the upper trough over the
Upper Midwest and northern/central Plains and an upper trough over
the Southwest begin to phase. At the surface, a cold front is
forecast to extend from southern Lower MI to northern OK Tuesday
morning. This boundary will develop slowly southeast through the
period, becoming oriented from NY to the Mid-South to north-central
TX by Wednesday morning. During the afternoon, a dryline will be
oriented across central TX. Ahead of the surface front and east of
the dryline, increasing southerly low-level flow will transport 60s
F dewpoints across the Sabine Valley into AR. The surface front and
dryline will serve as a focus for strong to severe thunderstorm
development during the afternoon/evening.
...OK/TX to the Mid-South...
Convective development is likely near the surface triple point and
cold front by 00z as forcing for ascent impinges on the moist and
moderately unstable airmass in the eastern OK/AR vicinity.
Thunderstorm coverage will likely increase through the evening as a
modest low-level jet develops. Any discrete convection that develops
will pose a risk for large hail and perhaps a tornado or two.
However, convection may become linear along the surface front rather
quickly, with an accompanying increase in damaging wind potential.
Severe potential along the dryline across parts of OK/TX is more
uncertain/conditional. Capping and nebulous large-scale ascent
(especially with southwest extent across TX) may suppress
convection. However, if a storm can develop within the favorable
thermodynamic and kinematic parameter space, large hail will be
possible.
..Leitman.. 05/03/2026
Read more
SPC 0600Z Day 2 Outlook
Day 2 Convective Outlook
NWS Storm Prediction Center Norman OK
1203 AM CDT Sun May 03 2026
Valid 041200Z - 051200Z
...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS ACROSS PORTIONS
OF THE MIDWEST...
...SUMMARY...
Strong to severe thunderstorms are possible across portions of the
Midwest late Monday afternoon into Monday night.
...Synopsis...
An upper trough will dig southward across the northern Plains/Upper
Midwest on Monday. At the same time, a upper low near CA and
attendant trough will pivot eastward toward the Southwest. At the
surface, low pressure over Ontario will develop northeast toward
James Bay while a trailing cold front moves southeast across the
northern/central Plains and the Upper Midwest/Great Lakes vicinity.
Meanwhile, a second surface low is forecast to deepen in the
vicinity of western KS/OK with a dryline extending southward across
central KS/western OK and west-central TX. Modest southerly return
flow will transport mainly 50s to near 60 F dewpoints northward
across OK/eastern KS into MO. More modest boundary layer moisture is
expected ahead of the cold front across portions of the Midwest.
...Eastern KS toward Lake Michigan and western OH...
Modest boundary layer moisture and uncertainty in timing/location of
the surface front contribute to uncertainty in severe potential for
Monday. Nevertheless, cool temperatures aloft will support steep
midlevel lapse rates and a corridor of 1000-1500 J/kg MLCAPE appears
likely ahead of the front. A lead shortwave impulse will migrate
across the OH Valley during the day. This may provide sufficient
forcing for ascent for isolated thunderstorm development within an
uncapped and modestly sheared airmass. Strong storms could produce
small hail and gusty winds. Additional strong storms are possible
during the afternoon further to the northwest near the surface front
from eastern IA toward Lake Michigan. However, boundary layer
moisture will likely be even more limited across this area, leading
to weaker instability. Nevertheless, a well mixed boundary layer
could support strong wind gusts.
Stronger ascent will arrive after 00z across the central Plains and
Mid-MS Valley vicinity in tandem with an increasing southwesterly
low-level jet. Thunderstorms are expected to develop near the triple
points in central/eastern KS and into MO as the surface cold front
drops southward. This activity may pose a risk for hail and strong
gusts.
...Southwest OK vicinity...
Some forecast guidance develops thunderstorms near the dryline late
afternoon/early evening across the southwest OK vicinity. Large
scale ascent will remain nebulous across the region and capping may
preclude thunderstorm development. However, strong heating west of
the dryline and strong convergence in model guidance are noted. If a
storm could break the cap, a severe risk could develop. However,
coverage/temporal risk would likely be limited and confidence in
this scenario is low, precluding severe probabilities at this time.
..Leitman.. 05/03/2026
Read more
SPC 0600Z Day 2 Outlook
Day 2 Convective Outlook
NWS Storm Prediction Center Norman OK
1203 AM CDT Sun May 03 2026
Valid 041200Z - 051200Z
...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS ACROSS PORTIONS
OF THE MIDWEST...
...SUMMARY...
Strong to severe thunderstorms are possible across portions of the
Midwest late Monday afternoon into Monday night.
...Synopsis...
An upper trough will dig southward across the northern Plains/Upper
Midwest on Monday. At the same time, a upper low near CA and
attendant trough will pivot eastward toward the Southwest. At the
surface, low pressure over Ontario will develop northeast toward
James Bay while a trailing cold front moves southeast across the
northern/central Plains and the Upper Midwest/Great Lakes vicinity.
Meanwhile, a second surface low is forecast to deepen in the
vicinity of western KS/OK with a dryline extending southward across
central KS/western OK and west-central TX. Modest southerly return
flow will transport mainly 50s to near 60 F dewpoints northward
across OK/eastern KS into MO. More modest boundary layer moisture is
expected ahead of the cold front across portions of the Midwest.
...Eastern KS toward Lake Michigan and western OH...
Modest boundary layer moisture and uncertainty in timing/location of
the surface front contribute to uncertainty in severe potential for
Monday. Nevertheless, cool temperatures aloft will support steep
midlevel lapse rates and a corridor of 1000-1500 J/kg MLCAPE appears
likely ahead of the front. A lead shortwave impulse will migrate
across the OH Valley during the day. This may provide sufficient
forcing for ascent for isolated thunderstorm development within an
uncapped and modestly sheared airmass. Strong storms could produce
small hail and gusty winds. Additional strong storms are possible
during the afternoon further to the northwest near the surface front
from eastern IA toward Lake Michigan. However, boundary layer
moisture will likely be even more limited across this area, leading
to weaker instability. Nevertheless, a well mixed boundary layer
could support strong wind gusts.
Stronger ascent will arrive after 00z across the central Plains and
Mid-MS Valley vicinity in tandem with an increasing southwesterly
low-level jet. Thunderstorms are expected to develop near the triple
points in central/eastern KS and into MO as the surface cold front
drops southward. This activity may pose a risk for hail and strong
gusts.
...Southwest OK vicinity...
Some forecast guidance develops thunderstorms near the dryline late
afternoon/early evening across the southwest OK vicinity. Large
scale ascent will remain nebulous across the region and capping may
preclude thunderstorm development. However, strong heating west of
the dryline and strong convergence in model guidance are noted. If a
storm could break the cap, a severe risk could develop. However,
coverage/temporal risk would likely be limited and confidence in
this scenario is low, precluding severe probabilities at this time.
..Leitman.. 05/03/2026
Read more
SPC 0600Z Day 2 Outlook
Day 2 Convective Outlook
NWS Storm Prediction Center Norman OK
1203 AM CDT Sun May 03 2026
Valid 041200Z - 051200Z
...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS ACROSS PORTIONS
OF THE MIDWEST...
...SUMMARY...
Strong to severe thunderstorms are possible across portions of the
Midwest late Monday afternoon into Monday night.
...Synopsis...
An upper trough will dig southward across the northern Plains/Upper
Midwest on Monday. At the same time, a upper low near CA and
attendant trough will pivot eastward toward the Southwest. At the
surface, low pressure over Ontario will develop northeast toward
James Bay while a trailing cold front moves southeast across the
northern/central Plains and the Upper Midwest/Great Lakes vicinity.
Meanwhile, a second surface low is forecast to deepen in the
vicinity of western KS/OK with a dryline extending southward across
central KS/western OK and west-central TX. Modest southerly return
flow will transport mainly 50s to near 60 F dewpoints northward
across OK/eastern KS into MO. More modest boundary layer moisture is
expected ahead of the cold front across portions of the Midwest.
...Eastern KS toward Lake Michigan and western OH...
Modest boundary layer moisture and uncertainty in timing/location of
the surface front contribute to uncertainty in severe potential for
Monday. Nevertheless, cool temperatures aloft will support steep
midlevel lapse rates and a corridor of 1000-1500 J/kg MLCAPE appears
likely ahead of the front. A lead shortwave impulse will migrate
across the OH Valley during the day. This may provide sufficient
forcing for ascent for isolated thunderstorm development within an
uncapped and modestly sheared airmass. Strong storms could produce
small hail and gusty winds. Additional strong storms are possible
during the afternoon further to the northwest near the surface front
from eastern IA toward Lake Michigan. However, boundary layer
moisture will likely be even more limited across this area, leading
to weaker instability. Nevertheless, a well mixed boundary layer
could support strong wind gusts.
Stronger ascent will arrive after 00z across the central Plains and
Mid-MS Valley vicinity in tandem with an increasing southwesterly
low-level jet. Thunderstorms are expected to develop near the triple
points in central/eastern KS and into MO as the surface cold front
drops southward. This activity may pose a risk for hail and strong
gusts.
...Southwest OK vicinity...
Some forecast guidance develops thunderstorms near the dryline late
afternoon/early evening across the southwest OK vicinity. Large
scale ascent will remain nebulous across the region and capping may
preclude thunderstorm development. However, strong heating west of
the dryline and strong convergence in model guidance are noted. If a
storm could break the cap, a severe risk could develop. However,
coverage/temporal risk would likely be limited and confidence in
this scenario is low, precluding severe probabilities at this time.
..Leitman.. 05/03/2026
Read more
SPC 1200Z Day 1 Outlook
Day 1 Convective Outlook
NWS Storm Prediction Center Norman OK
1236 AM CDT Sun May 03 2026
Valid 031200Z - 041200Z
...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS FOR PARTS OF
NORTHERN/CENTRAL MISSOURI INTO CENTRAL ILLINOIS...
...SUMMARY...
A few strong thunderstorms are possible across parts of
northern/central Missouri and central Illinois on Sunday.
...Synopsis...
A short-wave trough with a belt of enhanced northwesterly flow
within the broader eastern US trough will overspread the Missouri
Valley through this evening. A weak cold front will extend across
portions of the central Plains into the Missouri Valley. This
boundary will be the focus for potential isolated thunderstorm
development as the short-wave moves in across the region by the
evening.
...Northern/central Missouri into central Illinois...
Moisture quality continues to be a question within the Marginal Risk
area as previously stated in prior outlooks. Surface observations
show 50s dew points have made it as far north as the Red River in
southern Oklahoma as of late Saturday evening. There remains some
question just how far north (or deep) this moisture will be by late
afternoon across Missouri/Illinois. Most 00z guidance suggests that
50 F dew points will steadily spread into Missouri through the day
today. However, afternoon sounding profiles suggest this moisture to
be thin and potentially subject to mixing. Through the afternoon,
weak convergence along the front and a mid-level capping inversion
will likely prohibit convective development. As the short-wave
ascent arrives in the evening, 00z HREF guidance suggest that at
least isolated thunderstorms may develop (as seen in ensemble paint
balls >40z dBZ and in calibrated thunder chances around 40-50%).
Temperatures aloft will be rather cold (around -20 C at 500 mb).
Even upper 40s F dewpoints will result in around 1000 to perhaps
1500 J/kg MLCAPE by late afternoon/early evening. Given steepening
lapse rate profiles and cold temperatures aloft, potential for a few
instances of severe hail and strong to severe winds will be
possible.
...Northern California/southwest Oregon...
Convection is possible during the afternoon as mid-level
temperatures cool in close proximity to the upper low off the coast.
Filtered surface heating could allow for a few stronger storms to
develop. Small hail and gusty winds are possible. Anvil-level flow
will be quite weak which will likely lead to storms that are only
strong briefly. The overall severe potential appears low.
..Thornton/Lyons.. 05/03/2026
Read more
SPC 1200Z Day 1 Outlook
Day 1 Convective Outlook
NWS Storm Prediction Center Norman OK
1236 AM CDT Sun May 03 2026
Valid 031200Z - 041200Z
...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS FOR PARTS OF
NORTHERN/CENTRAL MISSOURI INTO CENTRAL ILLINOIS...
...SUMMARY...
A few strong thunderstorms are possible across parts of
northern/central Missouri and central Illinois on Sunday.
...Synopsis...
A short-wave trough with a belt of enhanced northwesterly flow
within the broader eastern US trough will overspread the Missouri
Valley through this evening. A weak cold front will extend across
portions of the central Plains into the Missouri Valley. This
boundary will be the focus for potential isolated thunderstorm
development as the short-wave moves in across the region by the
evening.
...Northern/central Missouri into central Illinois...
Moisture quality continues to be a question within the Marginal Risk
area as previously stated in prior outlooks. Surface observations
show 50s dew points have made it as far north as the Red River in
southern Oklahoma as of late Saturday evening. There remains some
question just how far north (or deep) this moisture will be by late
afternoon across Missouri/Illinois. Most 00z guidance suggests that
50 F dew points will steadily spread into Missouri through the day
today. However, afternoon sounding profiles suggest this moisture to
be thin and potentially subject to mixing. Through the afternoon,
weak convergence along the front and a mid-level capping inversion
will likely prohibit convective development. As the short-wave
ascent arrives in the evening, 00z HREF guidance suggest that at
least isolated thunderstorms may develop (as seen in ensemble paint
balls >40z dBZ and in calibrated thunder chances around 40-50%).
Temperatures aloft will be rather cold (around -20 C at 500 mb).
Even upper 40s F dewpoints will result in around 1000 to perhaps
1500 J/kg MLCAPE by late afternoon/early evening. Given steepening
lapse rate profiles and cold temperatures aloft, potential for a few
instances of severe hail and strong to severe winds will be
possible.
...Northern California/southwest Oregon...
Convection is possible during the afternoon as mid-level
temperatures cool in close proximity to the upper low off the coast.
Filtered surface heating could allow for a few stronger storms to
develop. Small hail and gusty winds are possible. Anvil-level flow
will be quite weak which will likely lead to storms that are only
strong briefly. The overall severe potential appears low.
..Thornton/Lyons.. 05/03/2026
Read more
SPC 1200Z Day 1 Outlook
Day 1 Convective Outlook
NWS Storm Prediction Center Norman OK
1236 AM CDT Sun May 03 2026
Valid 031200Z - 041200Z
...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS FOR PARTS OF
NORTHERN/CENTRAL MISSOURI INTO CENTRAL ILLINOIS...
...SUMMARY...
A few strong thunderstorms are possible across parts of
northern/central Missouri and central Illinois on Sunday.
...Synopsis...
A short-wave trough with a belt of enhanced northwesterly flow
within the broader eastern US trough will overspread the Missouri
Valley through this evening. A weak cold front will extend across
portions of the central Plains into the Missouri Valley. This
boundary will be the focus for potential isolated thunderstorm
development as the short-wave moves in across the region by the
evening.
...Northern/central Missouri into central Illinois...
Moisture quality continues to be a question within the Marginal Risk
area as previously stated in prior outlooks. Surface observations
show 50s dew points have made it as far north as the Red River in
southern Oklahoma as of late Saturday evening. There remains some
question just how far north (or deep) this moisture will be by late
afternoon across Missouri/Illinois. Most 00z guidance suggests that
50 F dew points will steadily spread into Missouri through the day
today. However, afternoon sounding profiles suggest this moisture to
be thin and potentially subject to mixing. Through the afternoon,
weak convergence along the front and a mid-level capping inversion
will likely prohibit convective development. As the short-wave
ascent arrives in the evening, 00z HREF guidance suggest that at
least isolated thunderstorms may develop (as seen in ensemble paint
balls >40z dBZ and in calibrated thunder chances around 40-50%).
Temperatures aloft will be rather cold (around -20 C at 500 mb).
Even upper 40s F dewpoints will result in around 1000 to perhaps
1500 J/kg MLCAPE by late afternoon/early evening. Given steepening
lapse rate profiles and cold temperatures aloft, potential for a few
instances of severe hail and strong to severe winds will be
possible.
...Northern California/southwest Oregon...
Convection is possible during the afternoon as mid-level
temperatures cool in close proximity to the upper low off the coast.
Filtered surface heating could allow for a few stronger storms to
develop. Small hail and gusty winds are possible. Anvil-level flow
will be quite weak which will likely lead to storms that are only
strong briefly. The overall severe potential appears low.
..Thornton/Lyons.. 05/03/2026
Read more
SPC 0100Z Day 1 Outlook
Day 1 Convective Outlook
NWS Storm Prediction Center Norman OK
0725 PM CDT Sat May 02 2026
Valid 030100Z - 031200Z
...NO SEVERE THUNDERSTORM AREAS FORECAST...
...SUMMARY...
No severe thunderstorms are expected through the rest of the period.
...Synopsis...
The Marginal Risk across the Florida Peninsula has been removed with
this outlook. Scattered thunderstorms will continue across the
region but are expected to remain sub-severe with the loss of
daytime heating and thunderstorm activity becoming mainly
post-frontal.
Scattered thunderstorms will be possible this evening across
portions of the Southwest into Great Basin and across the Northern
Rockies. With weakly sheared profiles and marginal instability, no
severe storms are forecast.
..Thornton.. 05/03/2026
Read more
SPC 0100Z Day 1 Outlook
Day 1 Convective Outlook
NWS Storm Prediction Center Norman OK
0725 PM CDT Sat May 02 2026
Valid 030100Z - 031200Z
...NO SEVERE THUNDERSTORM AREAS FORECAST...
...SUMMARY...
No severe thunderstorms are expected through the rest of the period.
...Synopsis...
The Marginal Risk across the Florida Peninsula has been removed with
this outlook. Scattered thunderstorms will continue across the
region but are expected to remain sub-severe with the loss of
daytime heating and thunderstorm activity becoming mainly
post-frontal.
Scattered thunderstorms will be possible this evening across
portions of the Southwest into Great Basin and across the Northern
Rockies. With weakly sheared profiles and marginal instability, no
severe storms are forecast.
..Thornton.. 05/03/2026
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SPC 0100Z Day 1 Outlook
Day 1 Convective Outlook
NWS Storm Prediction Center Norman OK
0725 PM CDT Sat May 02 2026
Valid 030100Z - 031200Z
...NO SEVERE THUNDERSTORM AREAS FORECAST...
...SUMMARY...
No severe thunderstorms are expected through the rest of the period.
...Synopsis...
The Marginal Risk across the Florida Peninsula has been removed with
this outlook. Scattered thunderstorms will continue across the
region but are expected to remain sub-severe with the loss of
daytime heating and thunderstorm activity becoming mainly
post-frontal.
Scattered thunderstorms will be possible this evening across
portions of the Southwest into Great Basin and across the Northern
Rockies. With weakly sheared profiles and marginal instability, no
severe storms are forecast.
..Thornton.. 05/03/2026
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SPC Day 3-8 Fire Weather Outlook
Day 3-8 Fire Weather Outlook
NWS Storm Prediction Center Norman OK
0427 PM CDT Sat May 02 2026
Valid 041200Z - 101200Z
...Synopsis...
An upper low will move onshore the West Coast on Day 3/Monday, then
transition to an open wave as it traverses the Southwest on Day
4/Tuesday. Concurrently, an upper trough will sag into the Midwest
and Great Lakes region before merging with southern stream troughing
over the Mid-South on Day 5/Wednesday. This pattern will provide
additional precipitation to the central Plains and portions of the
Eastern U.S. through mid-week, dampening broader fire weather
concerns. An upper ridge is expected to build across the Pacific
Northwest on Day 5/Wednesday, likely resulting in above normal
temperatures and dry conditions to prevail through the forecast
period for much of western CONUS.
Fire weather conditions reemerge for portions of the southern Plains
on Day 3/Monday as a deepening surface low tightens surface pressure
gradients across eastern NM into the TX Panhandle. Downslope
westerly winds of 15-20 mph and 15-20 percent RH will overlap a
confined region of dry fuels, maintaining 40% Critical
probabilities. Due to recent precipitation, probabilities were
trimmed to exclude areas that received appreciable rainfall. Dry and
breezy conditions may persist for parts of the Southern Plains into
West Texas on Day 4-5/Tuesday-Wednesday as southwesterly flow aloft
amplifies. However, guidance ambiguity in the placement of the upper
trough and timing of an approaching cold front precludes the
introduction of critical probabilities at this time.
As the upper trough traverses the Mid-South, increasing
southwesterly flow and poor moisture return should promote dry and
breezy conditions across the Mid-Atlantic on Day 4/Tuesday. However,
critical probabilities have been withheld due to recent appreciable
rainfall, marginal fuels, and expected moisture return overnight Day
4/Tuesday into Day 5/Wednesday.
..Elizalde-Garcia.. 05/02/2026
...Please see www.spc.noaa.gov/fire for graphic product...
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SPC Day 3-8 Fire Weather Outlook
Day 3-8 Fire Weather Outlook
NWS Storm Prediction Center Norman OK
0427 PM CDT Sat May 02 2026
Valid 041200Z - 101200Z
...Synopsis...
An upper low will move onshore the West Coast on Day 3/Monday, then
transition to an open wave as it traverses the Southwest on Day
4/Tuesday. Concurrently, an upper trough will sag into the Midwest
and Great Lakes region before merging with southern stream troughing
over the Mid-South on Day 5/Wednesday. This pattern will provide
additional precipitation to the central Plains and portions of the
Eastern U.S. through mid-week, dampening broader fire weather
concerns. An upper ridge is expected to build across the Pacific
Northwest on Day 5/Wednesday, likely resulting in above normal
temperatures and dry conditions to prevail through the forecast
period for much of western CONUS.
Fire weather conditions reemerge for portions of the southern Plains
on Day 3/Monday as a deepening surface low tightens surface pressure
gradients across eastern NM into the TX Panhandle. Downslope
westerly winds of 15-20 mph and 15-20 percent RH will overlap a
confined region of dry fuels, maintaining 40% Critical
probabilities. Due to recent precipitation, probabilities were
trimmed to exclude areas that received appreciable rainfall. Dry and
breezy conditions may persist for parts of the Southern Plains into
West Texas on Day 4-5/Tuesday-Wednesday as southwesterly flow aloft
amplifies. However, guidance ambiguity in the placement of the upper
trough and timing of an approaching cold front precludes the
introduction of critical probabilities at this time.
As the upper trough traverses the Mid-South, increasing
southwesterly flow and poor moisture return should promote dry and
breezy conditions across the Mid-Atlantic on Day 4/Tuesday. However,
critical probabilities have been withheld due to recent appreciable
rainfall, marginal fuels, and expected moisture return overnight Day
4/Tuesday into Day 5/Wednesday.
..Elizalde-Garcia.. 05/02/2026
...Please see www.spc.noaa.gov/fire for graphic product...
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WW 0183 Status Updates
STATUS REPORT ON WW 183
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 40 W SRQ TO
10 NW SRQ TO 30 ENE PIE TO 35 SW ORL TO 25 WSW ORL TO 25 ENE ORL
TO 45 N MLB.
..JEWELL..05/02/26
ATTN...WFO...JAX...MLB...TBW...
STATUS REPORT FOR WT 183
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
FLC009-057-095-097-103-105-022140-
FL
. FLORIDA COUNTIES INCLUDED ARE
BREVARD HILLSBOROUGH ORANGE
OSCEOLA PINELLAS POLK
AMZ552-GMZ830-853-022140-
CW
. ADJACENT COASTAL WATERS INCLUDED ARE
VOLUSIA-BREVARD COUNTY LINE TO SEBASTIAN INLET 0-20 NM
TAMPA BAY WATERS
COASTAL WATERS FROM ENGLEWOOD TO TARPON SPRINGS FL OUT 20 NM
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
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WW 183 TORNADO FL CW 021525Z - 022200Z
URGENT - IMMEDIATE BROADCAST REQUESTED
Tornado Watch Number 183
NWS Storm Prediction Center Norman OK
1125 AM EDT Sat May 2 2026
The NWS Storm Prediction Center has issued a
* Tornado Watch for portions of
Northern and Central Florida
Coastal Waters
* Effective this Saturday morning and evening from 1125 AM until
600 PM EDT.
* Primary threats include...
A couple tornadoes possible
Scattered damaging wind gusts to 65 mph possible
SUMMARY...A line of storms will move inland across the north-central
Peninsula through the afternoon, with additional strong/severe storm
development possible ahead of it. Damaging winds are expected to be
the most common risk, but a couple of tornadoes could occur.
The tornado watch area is approximately along and 65 statute miles
north and south of a line from 55 miles north northwest of Saint
Petersburg FL to 25 miles southeast of Daytona Beach FL. For a
complete depiction of the watch see the associated watch outline
update (WOUS64 KWNS WOU3).
PRECAUTIONARY/PREPAREDNESS ACTIONS...
REMEMBER...A Tornado Watch means conditions are favorable for
tornadoes and severe thunderstorms in and close to the watch
area. Persons in these areas should be on the lookout for
threatening weather conditions and listen for later statements
and possible warnings.
&&
AVIATION...Tornadoes and a few severe thunderstorms with hail
surface and aloft to 1 inch. Extreme turbulence and surface wind
gusts to 55 knots. A few cumulonimbi with maximum tops to 500. Mean
storm motion vector 25035.
...Guyer
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