* WHAT...Dangerously hot conditions. Afternoon temperatures 110 to
116. Major Heat Risk.
* WHERE...In Arizona, Parker Valley and Yuma. In California,
Chuckwalla Valley, Imperial Valley, and Palo Verde Valley.
* WHEN...Until 8 PM MST /8 PM PDT/ Wednesday.
* IMPACTS...Heat related illnesses increase significantly during
extreme heat events. Overexposure can cause heat cramps and heat
exhaustion to develop and, without intervention, can lead to heat
stroke.
* WHAT...Dangerously hot conditions. Afternoon temperatures 108 to
113. Major Heat Risk.
* WHERE...Buckeye/Avondale, Central Phoenix, Deer Valley, East
Valley, North Phoenix/Glendale, Northwest Valley,
Scottsdale/Paradise Valley, South Mountain/Ahwatukee, and Southeast
Valley/Queen Creek.
* WHEN...Until 8 PM MST Wednesday.
* IMPACTS...Heat related illnesses increase significantly during
extreme heat events. Overexposure can cause heat cramps and heat
exhaustion to develop and, without intervention, can lead to heat
stroke.
* ADDITIONAL DETAILS...In Maricopa County, Call 2-1-1 to find a free
cooling center, transportation, water and more.
https://www.maricopa.gov/heat
* WHAT...Dangerously hot conditions. Afternoon temperatures 105 to
112. Major Heat Risk.
* WHERE...A portion of south central Arizona.
* WHEN...Until 8 PM MST this evening.
* IMPACTS...Heat related illnesses increase significantly during
extreme heat events. Overexposure can cause heat cramps and heat
exhaustion to develop and, without intervention, can lead to heat
stroke.
* ADDITIONAL DETAILS...In Maricopa County, Call 2-1-1 to find a free
cooling center, transportation, water and more.
https://www.maricopa.gov/heat
* WHAT...Dangerously hot conditions. Afternoon temperatures 105 to
115. Major Heat Risk.
* WHERE...Mostly rural portions of southwest Arizona and southeast
California, including Joshua Tree National Park.
* WHEN...Until 8 PM MST /8 PM PDT/ this evening.
* IMPACTS...Heat related illnesses increase significantly during
extreme heat events. Overexposure can cause heat cramps and heat
exhaustion to develop and, without intervention, can lead to heat
stroke.
* WHAT...Dangerously hot conditions, with temperatures around 106 to
112 expected below 4000 feet.
* WHERE...Yavapai County Valleys and Basins.
* WHEN...From 10 AM Friday to 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 around 104 to
108 expected.
* WHERE...Marble and Glen Canyons and Oak Creek and Sycamore Canyons.
* WHEN...From 10 AM MST /11 AM MDT/ Friday to 8 PM MST /9 PM MDT/
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 expected below 4000 feet, with
daytime temperatures ranging around 100 degrees at Havasupai
Gardens, and 112 to 116 degrees at Phantom Ranch.
* WHERE...Lower elevations of the Grand Canyon.
* WHEN...From 10 AM Thursday to 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 of 108 to 112
expected.
* WHERE...Eastern Cochise County below 5000 feet, South Central Pinal
County, Southeast Pinal County, Tohono O'odham Nation, Tucson Metro
Area, Upper Gila River Valley, Upper San Pedro River Valley, Upper
Santa Cruz River Valley/Altar Valley, and Western Pima County.
* WHEN...From 10 AM Thursday to 8 PM MST Sunday.
* IMPACTS...Heat related illnesses increase significantly during
extreme heat events.
* ADDITIONAL DETAILS...Warm overnight low temperatures of 84 to 90
degrees will provide little to no relief from heat overnight.
Warmest overnight low temperatures expected in the Western Deserts.
* WHAT...Dangerously hot conditions expected. Afternoon temperatures
in the desert valleys will climb into the 108 to 114 degree range.
Temperatures in the Colorado River Valley may exceed 115 degrees.
Temperatures in the lower elevations of Death Valley will range
from 115 to 120 degrees. Overnight lows generally 80 to 95 degrees.
* WHERE...Portions of northwest Arizona, southeast California, and
southern Nevada including the Greater Mojave Desert region.
* WHEN...Until 8 PM PDT /8 PM MST/ this evening.
* IMPACTS...Heat related illnesses increase significantly during
extreme heat events.
* WHAT...Dangerously hot conditions. Afternoon temperatures 109 to
116. Major Heat Risk.
* WHERE...Portions of southwest Arizona and southeast California.
* WHEN...Until 8 PM MST /8 PM PDT/ Wednesday.
* IMPACTS...Heat related illnesses increase significantly during
extreme heat events. Overexposure can cause heat cramps and heat
exhaustion to develop and, without intervention, can lead to heat
stroke.
* WHAT...Dangerously hot conditions. Afternoon temperatures 108 to
113. Major Heat Risk.
* WHERE...South central Arizona, including the Phoenix metropolitan
area.
* WHEN...Until 8 PM MST Wednesday.
* IMPACTS...Heat related illnesses increase significantly during
extreme heat events. Overexposure can cause heat cramps and heat
exhaustion to develop and, without intervention, can lead to heat
stroke.
* ADDITIONAL DETAILS...In Maricopa County, Call 2-1-1 to find a free
cooling center, transportation, water and more.
* WHAT...Dangerously hot conditions. Afternoon temperatures 104 to
113. Major Heat Risk.
* WHERE...Portions of South-central Arizona.
* WHEN...Until 8 PM MST this evening.
* IMPACTS...Heat related illnesses increase significantly during
extreme heat events. Overexposure can cause heat cramps and heat
exhaustion to develop and, without intervention, can lead to heat
stroke.
* ADDITIONAL DETAILS...In Maricopa County, Call 2-1-1 to find a free
cooling center, transportation, water and more.
* WHAT...Dangerously hot conditions. Afternoon temperatures 110 to
115 degrees. Major Heat Risk.
* WHERE...Mostly rural portions of southwest Arizona and southeast
California, including Joshua Tree National Park.
* WHEN...Until 8 PM MST /8 PM PDT/ this evening.
* IMPACTS...Heat related illnesses increase significantly during
extreme heat events. Overexposure can cause heat cramps and heat
exhaustion to develop and, without intervention, can lead to heat
stroke.
* WHAT...Dangerously hot conditions. Afternoon temperatures 109 to
116. Major Heat Risk.
* WHERE...Portions of southwest Arizona and southeast California.
* WHEN...Until 8 PM MST /8 PM PDT/ Wednesday.
* IMPACTS...Heat related illnesses increase significantly during
extreme heat events. Overexposure can cause heat cramps and heat
exhaustion to develop and, without intervention, can lead to heat
stroke.
* ADDITIONAL DETAILS...In Maricopa County, Call 2-1-1 to find a free
cooling center, transportation, water and more.
* WHAT...Dangerously hot conditions. Afternoon temperatures 108 to
113. Major Heat Risk.
* WHERE...South central Arizona, including the Phoenix metropolitan
area.
* WHEN...Until 8 PM MST Wednesday.
* IMPACTS...Heat related illnesses increase significantly during
extreme heat events. Overexposure can cause heat cramps and heat
exhaustion to develop and, without intervention, can lead to heat
stroke.
* ADDITIONAL DETAILS...In Maricopa County, Call 2-1-1 to find a free
cooling center, transportation, water and more.
* WHAT...Dangerously hot conditions. Afternoon temperatures 110 to
115 degrees. Major Heat Risk.
* WHERE...Mostly rural portions of southwest Arizona and southeast
California, including Joshua Tree National Park.
* WHEN...Until 8 PM MST /8 PM PDT/ this evening.
* IMPACTS...Heat related illnesses increase significantly during
extreme heat events. Overexposure can cause heat cramps and heat
exhaustion to develop and, without intervention, can lead to heat
stroke.
* ADDITIONAL DETAILS...In Maricopa County, Call 2-1-1 to find a free
cooling center, transportation, water and more.
* WHAT...Dangerously hot conditions. Afternoon temperatures 104 to
113. Major Heat Risk.
* WHERE...Portions of South-central Arizona.
* WHEN...Until 8 PM MST this evening.
* IMPACTS...Heat related illnesses increase significantly during
extreme heat events. Overexposure can cause heat cramps and heat
exhaustion to develop and, without intervention, can lead to heat
stroke.
* ADDITIONAL DETAILS...In Maricopa County, Call 2-1-1 to find a free
cooling center, transportation, water and more.
Temperatures have dropped below warning criteria. Therefore the
Extreme Heat Warning will be allowed to expire. Temperatures will
remain between 100 and 110 degrees on Monday, so make sure to drink
plenty of water and exercise caution if outside during the daytime.
* WHAT...Flooding caused by excessive rainfall is expected.
* WHERE...East Central Cochise County in southeastern Arizona...
* WHEN...Until 830 PM MST.
* IMPACTS...Rises in small streams and normally dry washes. Some
low-water crossings may become impassable.
* ADDITIONAL DETAILS...
- At 533 PM MST, Doppler radar indicated heavy rain due to
thunderstorms. Minor flooding is ongoing or expected to begin
shortly in the advisory area. Between 1 and 1.5 inches of rain
have fallen.
- Some locations that will experience flooding include...
Portal.
- This includes Route 80 near mile marker 415.
- http://www.weather.gov/safety/flood
* WHAT...Dangerously hot conditions expected. Afternoon temperatures
in the desert valleys will climb into the 108 to 114 degree range,
and may exceed 115 along the Colorado River Valley and 120 in Death
Valley. Overnight lows generally 80 to 95 degrees.
* WHERE...Portions of northwest Arizona, southeast California, and
southern Nevada including the Greater Mojave Desert region.
* WHEN...Until 8 PM PDT /8 PM MST/ Monday.
* IMPACTS...Heat related illnesses increase significantly during
extreme heat events.