* WHAT...Dangerously hot conditions below 4000 feet, with daytime
temperatures ranging from 92 degrees at Havasupai Gardens, to 98
degrees at Phantom Ranch.
* WHERE...Lower elevations of the Grand Canyon.
* WHEN...Until 8 PM MST Sunday.
* IMPACTS...Most individuals will be at risk for heat-related
illnesses without effective cooling or adequate hydration,
especially with prolonged outdoor exposure.
* WHAT...Dangerously hot conditions, with temperatures up to 100
below 4000 feet.
* WHERE...Lower elevations of Yavapai County.
* WHEN...Until 8 PM MST Sunday.
* IMPACTS...Pets, livestock, and those sensitive to heat, such as the
homeless, elderly, and children will be at risk for heat-related
illnesses. Those without effective cooling and/or adequate
hydration will be at the greatest risk.
* WHAT...Dangerously hot temperatures climbing to near-30 degrees
above seasonal normals.
* WHERE...Portions of northwest Arizona, southeast California, and
southern Nevada.
* WHEN...Until 8 PM PDT /8 PM MST/ Sunday.
* IMPACTS...Heat-related illnesses increase significantly during
extreme heat events.
* ADDITIONAL DETAILS...Extreme early-season heat coupled with high
tourism rates will make this heat very dangerous, particularly for
those not acclimated to the heat and/or traveling from cooler
climates. Numerous daily and monthly heat records are in jeopardy
through at least Sunday.
* WHAT...Dangerously hot conditions with high temperatures of 100 to
108 degrees.
* WHERE...South Central Pinal County, Southeast Pinal County, Tohono
O'odham Nation, Tucson Metro Area, and Western Pima County.
* WHEN...Until 8 PM MST Sunday.
* IMPACTS...Heat related illnesses increase significantly during
extreme heat events.
* ADDITIONAL DETAILS...Visitors, seasonal residents, and other people
not typically accustomed to or acclimated to extreme heat are
especially urged to take precautions during the hottest hours of
the day and limit outdoor activity.
* WHAT...Dangerously hot conditions with high temperatures of 95 to
100 degrees.
* WHERE...Eastern Cochise County below 5000 feet, Upper Gila River
Valley, Upper San Pedro River Valley, and Upper Santa Cruz River
Valley/Altar Valley.
* WHEN...Until 8 PM MST Sunday.
* IMPACTS...Heat related illnesses increase significantly during
extreme heat events.
* ADDITIONAL DETAILS...Visitors, seasonal residents, and other people
not typically accustomed to or acclimated to extreme heat are
especially urged to take precautions during the hottest hours of
the day and limit outdoor activity.
* WHAT...Dangerously hot conditions. Afternoon temperatures 97 to
108 expected. Overexposure can cause heat cramps and heat
exhaustion to develop and, without intervention, can lead to heat
stroke.
* WHERE...Portions of south central and southwest Arizona.
* WHEN...Until 8 PM MST Sunday.
* IMPACTS...Heat related illnesses increase significantly during
extreme heat events.
* WHAT...Dangerously hot conditions. Afternoon temperatures 96 to
109. Overexposure can cause heat cramps and heat exhaustion to
develop and, without intervention, can lead to heat stroke.
* WHERE...Portions of southwest Arizona and southeast and southern
California.
* WHEN...Until 8 PM MST /8 PM PDT/ Sunday.
* IMPACTS...Heat related illnesses increase significantly during
extreme heat events.
* WHAT...Dangerously hot conditions. Afternoon temperatures 100 to
107 expected. Overexposure can cause heat cramps and heat
exhaustion to develop and, without intervention, can lead to heat
stroke.
* WHERE...The Northwest Valley of the Phoenix Metro Area, The East
Valley of the Phoenix Metro Area, Buckeye/Avondale, Deer Valley,
Central Phoenix, North Phoenix/Glendale, Scottsdale/Paradise
Valley, South Mountain/Ahwatukee, and Southeast Valley/Queen Creek.
* WHEN...Until 8 PM MST Sunday.
* IMPACTS...Heat related illnesses increase significantly during
extreme heat events.
* ADDITIONAL DETAILS...If you need help finding a place to stay cool
or need other assistance to stay safe, please call 2-1-1 for
resources you can use.
* WHAT...Dangerously hot conditions. Afternoon temperatures 95 to
106 expected. Overexposure can cause heat cramps and heat
exhaustion to develop and, without intervention, can lead to heat
stroke.
* WHERE...Apache Junction/Gold Canyon, Cave Creek/New River,
Dripping Springs, Fountain Hills/East Mesa, New River Mesa, Rio
Verde/Salt River, and Superior.
* WHEN...Until 8 PM MST Sunday.
* IMPACTS...Heat related illnesses increase significantly during
extreme heat events.
* WHAT...Dangerously hot conditions. Afternoon temperatures 96 to
109. Overexposure can cause heat cramps and heat exhaustion to
develop and, without intervention, can lead to heat stroke.
* WHERE...Portions of southwest Arizona and southeast and southern
California.
* WHEN...Until 8 PM MST /8 PM PDT/ Sunday.
* IMPACTS...Heat related illnesses increase significantly during
extreme heat events.
* WHAT...Dangerously hot conditions. Afternoon temperatures 97 to
108 expected. Overexposure can cause heat cramps and heat
exhaustion to develop and, without intervention, can lead to heat
stroke.
* WHERE...Portions of south central and southwest Arizona.
* WHEN...From 11 AM Thursday to 8 PM MST Sunday.
* IMPACTS...Heat related illnesses increase significantly during
extreme heat events.
* WHAT...Dangerously hot conditions. Afternoon temperatures 95 to
106 expected. Overexposure can cause heat cramps and heat
exhaustion to develop and, without intervention, can lead to heat
stroke.
* WHERE...Apache Junction/Gold Canyon, Cave Creek/New River,
Dripping Springs, Fountain Hills/East Mesa, New River Mesa, Rio
Verde/Salt River, and Superior.
* WHEN...From 11 AM Thursday to 8 PM MST Sunday.
* IMPACTS...Heat related illnesses increase significantly during
extreme heat events.
* WHAT...Dangerously hot conditions. Afternoon temperatures 100 to
107 expected. Overexposure can cause heat cramps and heat
exhaustion to develop and, without intervention, can lead to heat
stroke.
* WHERE...The Northwest Valley of the Phoenix Metro Area, The East
Valley of the Phoenix Metro Area, Buckeye/Avondale, Deer Valley,
Central Phoenix, North Phoenix/Glendale, Scottsdale/Paradise
Valley, South Mountain/Ahwatukee, and Southeast Valley/Queen Creek.
* WHEN...From 11 AM Thursday to 8 PM MST Sunday.
* IMPACTS...Heat related illnesses increase significantly during
extreme heat events.
* ADDITIONAL DETAILS...In Maricopa County, call 2-1-1 if you need
help finding resources. More information at
https://www.maricopa.gov/heat.
* WHAT...Dangerously hot temperatures climbing to near-30 degrees
above seasonal normals.
* WHERE...Portions of northwest Arizona, southeast California, and
southern Nevada.
* WHEN...Until 8 PM PDT /8 PM MST/ Sunday.
* IMPACTS...Heat-related illnesses increase significantly during
extreme heat events.
* ADDITIONAL DETAILS...Extreme early-season heat coupled with high
tourism rates will make this heat very dangerous, particularly for
those not acclimated to the heat and/or traveling from cooler
climates. Numerous daily and monthly heat records are in jeopardy
through at least Sunday.
* WHAT...Dangerously hot conditions with high temperatures of 100 to
108 degrees expected. The hottest days are currently expected to be
Friday March 20 and Saturday March 21.
* WHERE...South Central Pinal County, Southeast Pinal County, Tohono
O'odham Nation, Tucson Metro Area, and Western Pima County.
* WHEN...From 11 AM Thursday to 8 PM MST Sunday.
* IMPACTS...Heat related illnesses increase significantly during
extreme heat events.
* WHAT...Dangerously hot conditions with high temperatures of 95 to
100 degrees expected. The hottest days are currently expected to be
Friday March 20 and Saturday March 21.
* WHERE...Eastern Cochise County below 5000 feet, Upper Gila River
Valley, Upper San Pedro River Valley, and Upper Santa Cruz River
Valley/Altar Valley.
* WHEN...From 11 AM Thursday to 8 PM MST Sunday.
* IMPACTS...Heat related illnesses increase significantly during
extreme heat events.
* WHAT...Dangerously hot conditions below 4000 feet, with daytime
temperatures ranging from 94 degrees at Havasupai Gardens, to 100
degrees at Phantom Ranch.
* WHERE...Lower elevations of the Grand Canyon.
* WHEN...Until 8 PM MST Sunday.
* IMPACTS...Most individuals will be at risk for heat-related
illnesses without effective cooling or adequate hydration,
especially with prolonged outdoor exposure.
* WHAT...Dangerously hot conditions, with temperatures up to 101
below 4000 feet.
* WHERE...Lower elevations of Yavapai County Valleys.
* WHEN...Until 8 PM MST Sunday.
* IMPACTS...Pets, livestock, and those sensitive to heat, such as the
homeless, elderly, and children will be at risk for heat-related
illnesses. Those without effective cooling and/or adequate
hydration will be at the greatest risk.
* WHAT...Dangerously hot conditions, with temperatures 96 to 104
expected below 4000 feet. These are temperatures that would be more
typical of Summer.
* WHERE...Lower elevations of the Grand Canyon, and Yavapai County
Valleys and Basins.
* WHEN...From 11 AM Wednesday to 8 PM MST Sunday.
* IMPACTS...Pets, livestock, and those sensitive to heat, such as the
homeless, elderly, and children will be at risk for heat-related
illnesses. Those without effective cooling and/or adequate
hydration will be at the greatest risk.
* WHAT...Dangerously hot conditions with high temperatures of 95 to
100 degrees expected. The hottest days are currently expected to be
Friday March 20 and Saturday March 21.
* WHERE...Eastern Cochise County below 5000 feet, Upper Gila River
Valley, Upper San Pedro River Valley, and Upper Santa Cruz River
Valley/Altar Valley.
* WHEN...From 11 AM Thursday to 8 PM MST Sunday.
* IMPACTS...Heat related illnesses increase significantly during
extreme heat events.
* ADDITIONAL DETAILS...Visitors, seasonal residents, and other people
not typically accustomed to or acclimated to extreme heat are
especially urged to take precautions during the hottest hours of
the day and limit outdoor activity.