Severe Center
Central Iowa Warnings, Watches, And Advisories Extreme Heat Warning
Extreme Heat Warning
In effect:
Sunday, May 10 2026 10:00 AM PDT – Monday, May 11 2026 8:00 PM PDT
Issued by NWS San Diego CA
EXTREME HEAT WARNING REMAINS IN EFFECT FROM 10 AM THIS MORNING TO 8 PM PDT MONDAY
What:
Dangerously hot conditions with temperatures 104 to 109
degrees possible.
Dangerously hot conditions with temperatures 104 to 109
degrees possible.
Where:
Coachella Valley, San Diego County Deserts, and San
Gorgonio Pass near Banning.
Coachella Valley, San Diego County Deserts, and San
Gorgonio Pass near Banning.
When:
From 10 AM this morning to 8 PM PDT Monday.
From 10 AM this morning to 8 PM PDT Monday.
Impacts:
Heat related illnesses increase significantly during
extreme heat events.
Heat related illnesses increase significantly during
extreme heat events.
Additional Details:
Hottest conditions expected on Monday.
Hottest conditions expected on Monday.
Instructions:
Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.
Take extra precautions when outside. Wear lightweight and loose
fitting clothing. Try to limit strenuous activities to early morning
or evening. Take action when you see symptoms of heat exhaustion and
heat stroke.
Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.
Take extra precautions when outside. Wear lightweight and loose
fitting clothing. Try to limit strenuous activities to early morning
or evening. Take action when you see symptoms of heat exhaustion and
heat stroke.
Areas Impacted:
Coachella Valley
San Diego County Deserts
San Gorgonio Pass Near Banning
Extreme Heat Warning
In effect:
Monday, May 11 2026 11:00 AM MST – Monday, May 11 2026 8:00 PM MST
Issued by NWS Phoenix AZ
EXTREME HEAT WARNING REMAINS IN EFFECT FROM 11 AM MST /11 AM PDT/ TO 8 PM MST /8 PM PDT/ MONDAY
What:
Dangerously hot conditions. Afternoon temperatures 106 to
112 expected. Major Heat Risk.
Dangerously hot conditions. Afternoon temperatures 106 to
112 expected. Major Heat Risk.
Where:
In Arizona, Parker Valley and Yuma. In California,
Chuckwalla Valley, Imperial Valley, and Palo Verde Valley.
In Arizona, Parker Valley and Yuma. In California,
Chuckwalla Valley, Imperial Valley, and Palo Verde Valley.
When:
From 11 AM MST /11 AM PDT/ to 8 PM MST /8 PM PDT/ Monday.
From 11 AM MST /11 AM PDT/ to 8 PM MST /8 PM PDT/ Monday.
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.
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.
Instructions:
An Extreme Heat Warning means that a period of very hot
temperatures, even by local standards, will occur. Actions should be
taken to lessen the impact of the extreme heat.
Take extra precautions if you work or spend time outside. When
possible, reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stroke. Wear lightweight and loose-fitting clothing when possible
and drink plenty of water.
To reduce risk during outdoor work, the Occupational Safety and
Health Administration recommends scheduling frequent rest breaks in
shaded or air conditioned environments. Anyone overcome by heat
should be moved to a cool and shaded location. Heat stroke is an
emergency! Call 9 1 1.
Public cooling shelters are available in some areas. Consult county
officials for more details.
An Extreme Heat Warning means that a period of very hot
temperatures, even by local standards, will occur. Actions should be
taken to lessen the impact of the extreme heat.
Take extra precautions if you work or spend time outside. When
possible, reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stroke. Wear lightweight and loose-fitting clothing when possible
and drink plenty of water.
To reduce risk during outdoor work, the Occupational Safety and
Health Administration recommends scheduling frequent rest breaks in
shaded or air conditioned environments. Anyone overcome by heat
should be moved to a cool and shaded location. Heat stroke is an
emergency! Call 9 1 1.
Public cooling shelters are available in some areas. Consult county
officials for more details.
Areas Impacted:
Parker Valley
Yuma
Imperial Valley
Palo Verde Valley
Chuckwalla Valley
Extreme Heat Warning
In effect:
Sunday, May 10 2026 10:00 AM MST – Monday, May 11 2026 8:00 PM MST
Issued by NWS Phoenix AZ
EXTREME HEAT WARNING REMAINS IN EFFECT FROM 10 AM THIS MORNING TO 8 PM PDT MONDAY
What:
Dangerously hot conditions. Afternoon temperatures 100 to
114 expected. Major Heat Risk.
Dangerously hot conditions. Afternoon temperatures 100 to
114 expected. Major Heat Risk.
Where:
Southwest corner of Imperial County, Western Imperial
County, and Salton Sea.
Southwest corner of Imperial County, Western Imperial
County, and Salton Sea.
When:
From 10 AM this morning to 8 PM PDT Monday.
From 10 AM this morning to 8 PM PDT Monday.
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.
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.
Instructions:
An Extreme Heat Warning means that a period of very hot
temperatures, even by local standards, will occur. Actions should be
taken to lessen the impact of the extreme heat.
Take extra precautions if you work or spend time outside. When
possible, reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stroke. Wear lightweight and loose-fitting clothing when possible
and drink plenty of water.
To reduce risk during outdoor work, the Occupational Safety and
Health Administration recommends scheduling frequent rest breaks in
shaded or air conditioned environments. Anyone overcome by heat
should be moved to a cool and shaded location. Heat stroke is an
emergency! Call 9 1 1.
Public cooling shelters are available in some areas. Consult county
officials for more details.
An Extreme Heat Warning means that a period of very hot
temperatures, even by local standards, will occur. Actions should be
taken to lessen the impact of the extreme heat.
Take extra precautions if you work or spend time outside. When
possible, reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stroke. Wear lightweight and loose-fitting clothing when possible
and drink plenty of water.
To reduce risk during outdoor work, the Occupational Safety and
Health Administration recommends scheduling frequent rest breaks in
shaded or air conditioned environments. Anyone overcome by heat
should be moved to a cool and shaded location. Heat stroke is an
emergency! Call 9 1 1.
Public cooling shelters are available in some areas. Consult county
officials for more details.
Areas Impacted:
Imperial County Southwest
Salton Sea
Imperial County West
Extreme Heat Warning
In effect:
Sunday, May 10 2026 10:00 AM MST – Tuesday, May 12 2026 8:00 PM MST
Issued by NWS Phoenix AZ
EXTREME HEAT WARNING REMAINS IN EFFECT FROM 10 AM THIS MORNING TO 8 PM MST TUESDAY
What:
Dangerously hot conditions. Afternoon temperatures 104 to
110 expected. Major Heat Risk.
Dangerously hot conditions. Afternoon temperatures 104 to
110 expected. Major Heat Risk.
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.
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 10 AM this morning to 8 PM MST Tuesday.
From 10 AM this morning to 8 PM MST Tuesday.
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.
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.
http://www.maricopa.gov/heat
In Maricopa County, call 2-1-1 to find a free
cooling center, transportation, water, and more.
http://www.maricopa.gov/heat
Instructions:
An Extreme Heat Warning means that a period of very hot
temperatures, even by local standards, will occur. Actions should be
taken to lessen the impact of the extreme heat.
Take extra precautions if you work or spend time outside. When
possible, reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stroke. Wear lightweight and loose-fitting clothing when possible
and drink plenty of water.
To reduce risk during outdoor work, the Occupational Safety and
Health Administration recommends scheduling frequent rest breaks in
shaded or air conditioned environments. Anyone overcome by heat
should be moved to a cool and shaded location. Heat stroke is an
emergency! Call 9 1 1.
Public cooling shelters are available in some areas. Consult county
officials for more details.
An Extreme Heat Warning means that a period of very hot
temperatures, even by local standards, will occur. Actions should be
taken to lessen the impact of the extreme heat.
Take extra precautions if you work or spend time outside. When
possible, reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stroke. Wear lightweight and loose-fitting clothing when possible
and drink plenty of water.
To reduce risk during outdoor work, the Occupational Safety and
Health Administration recommends scheduling frequent rest breaks in
shaded or air conditioned environments. Anyone overcome by heat
should be moved to a cool and shaded location. Heat stroke is an
emergency! Call 9 1 1.
Public cooling shelters are available in some areas. Consult county
officials for more details.
Areas Impacted:
Northwest Valley
Buckeye/Avondale
Deer Valley
Central Phoenix
North Phoenix/Glendale
Scottsdale/Paradise Valley
East Valley
South Mountain/Ahwatukee
Southeast Valley/Queen Creek