Extreme Heat Warning
URGENT - WEATHER MESSAGE
National Weather Service Tucson AZ
110 AM MST Sat Jun 28 2025
AZZ501-502-504>506-509-282300-
/O.CON.KTWC.XH.W.0003.250630T1700Z-250701T0300Z/
Western Pima County-Tohono O`odham Nation-Tucson Metro Area-South
Central Pinal County-Southeast Pinal County-Upper Gila River
Valley-
Including the cities of Vail, Clifton, Picacho Peak State Park,
Ajo, Green Valley, Sells, Safford, Marana, Mammoth, Tucson,
Oracle, and Organ Pipe Cactus N.M.
110 AM MST Sat Jun 28 2025
...EXTREME HEAT WARNING REMAINS IN EFFECT FROM 10 AM TO 8 PM MST
MONDAY...
* WHAT...Dangerously hot conditions with temperatures 108 to 112 in
the Tucson Metropolitan area, Gila River Valley, Southeast and
South Central Pinal County and across western and central Pima
County including the Tohono O`odham Nation.
* WHERE...South Central Pinal County, Southeast Pinal County, Tohono
O`odham Nation, Tucson Metro Area, Upper Gila River Valley, and
Western Pima County.
* WHEN...From 10 AM to 8 PM MST Monday.
* IMPACTS...Heat related illnesses increase significantly during
extreme heat events.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
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.
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.
&&
$$
GEL
URGENT - WEATHER MESSAGE
National Weather Service Phoenix AZ
1230 AM MST Sat Jun 28 2025
AZZ530>533-535-536-CAZ562-565>567-569-570-282230-
/O.EXA.KPSR.XH.W.0003.250630T1700Z-250701T0300Z/
Parker Valley-Kofa-Yuma-Central La Paz-Southeast Yuma County-Gila
River Valley-Imperial County Southwest-Imperial County Southeast-
Imperial County West-Imperial Valley-Palo Verde Valley-Chuckwalla
Valley-
Including the cities of Brenda, Alamorio, El Centro, Blythe,
Ripley, Winterhaven, Vicksburg Junction, Midland, Harcuvar,
Fortuna Foothills, Ehrenberg, Brawley, Parker, Salome, Martinez
Lake, Calexico, Mountain Spring, Ocotillo, Plaster City, Coyote
Wells, Winona, Vicksburg, Palo Verde, Yuma, Ligurta, Coolidge
Springs, Salton City, Quartzsite, and Palm Canyon
1230 AM MST Sat Jun 28 2025 /1230 AM PDT Sat Jun 28 2025/
...EXTREME HEAT WARNING IN EFFECT FROM 10 AM MST /10 AM PDT/ TO 8 PM
MST /8 PM PDT/ MONDAY...
* WHAT...Dangerously hot conditions. Afternoon temperatures 110 to
115 expected. Major Heat Risk. 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 California.
* WHEN...From 10 AM MST /10 AM PDT/ to 8 PM MST /8 PM PDT/ Monday.
* IMPACTS...Heat related illnesses increase significantly during
extreme heat events.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
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.
&&
$$
URGENT - WEATHER MESSAGE
National Weather Service Phoenix AZ
1230 AM MST Sat Jun 28 2025
AZZ534-538-539-541-545-547-549-552>555-559-560-282230-
/O.CON.KPSR.XH.W.0003.250630T1700Z-250701T0300Z/
Aguila Valley-Tonopah Desert-Gila Bend-Cave Creek/New River-New
River Mesa-Rio Verde/Salt River-Fountain Hills/East Mesa-Superior-
Northwest Pinal County-West Pinal County-Apache Junction/Gold
Canyon-Sonoran Desert Natl Monument-San Carlos-
Including the cities of Peridot, Aguila, Apache Junction, Casa
Grande, San Carlos, Coolidge, Florence, Scottsdale, Gladden,
Hassayampa, Sentinel, Arlington, Fountain Hills, Gila Bend, Kaka,
Wintersburg, Wickenburg, Cactus Forest, Tonopah, Tortilla Flat,
and Superior
1230 AM MST Sat Jun 28 2025
...EXTREME HEAT WARNING REMAINS IN EFFECT FROM 10 AM TO 8 PM MST
MONDAY...
* WHAT...Dangerously hot conditions. Afternoon temperatures 109 to
115 expected. Major Heat Risk. Overexposure can cause heat cramps
and heat exhaustion to develop and, without intervention, can lead
to heat stroke.
* WHERE...A portion of south central Arizona.
* WHEN...From 10 AM to 8 PM MST Monday.
* IMPACTS...Heat related illnesses increase significantly during
extreme heat events.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
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.
&&
$$
CK
URGENT - WEATHER MESSAGE
National Weather Service Phoenix AZ
1230 AM MST Sat Jun 28 2025
AZZ537-540-542>544-546-548-550-551-282230-
/O.CON.KPSR.XH.W.0003.250629T1700Z-250702T0300Z/
Northwest Valley-Buckeye/Avondale-Deer Valley-Central Phoenix-
North Phoenix/Glendale-Scottsdale/Paradise Valley-East Valley-
South Mountain/Ahwatukee-Southeast Valley/Queen Creek-
Including the cities of Peoria, Chandler, Sun City West,
Surprise, Liberty, Wittmann, Tempe, Sun Lakes, Avondale,
Goodyear, Phoenix, Paradise Valley, Gilbert, Queen Creek,
Beardsley, Cashion, Mesa, and Circle City
1230 AM MST Sat Jun 28 2025
...EXTREME HEAT WARNING REMAINS IN EFFECT FROM 10 AM SUNDAY TO 8 PM
MST TUESDAY...
* WHAT...Dangerously hot conditions. Afternoon temperatures 110 to
116 expected. Major Heat Risk. 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 10 AM Sunday to 8 PM MST Tuesday.
* IMPACTS...Heat related illnesses increase significantly during
extreme heat events.
* ADDITIONAL DETAILS...In Maricopa County, call 2-1-1 to find a free
cooling center, transportation, water, and more at
https://www.maricopa.gov/heat.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
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.
&&
$$
URGENT - WEATHER MESSAGE
National Weather Service Flagstaff AZ
1252 PM MST Fri Jun 27 2025
AZZ006-281500-
/O.NEW.KFGZ.XH.W.0002.250628T1700Z-250702T0200Z/
Grand Canyon Country-
Including the cities of Grand Canyon Village, North Rim, and
Supai
1252 PM MST Fri Jun 27 2025
...EXTREME HEAT WARNING IN EFFECT FROM 10 AM SATURDAY TO 7 PM MST
TUESDAY BELOW 4000 FEET...
* WHAT...Dangerously hot conditions expected below 4000 feet, with
daytime temperatures ranging from 102 degrees at Havasupai
Gardens, to 113 degrees at Phantom Ranch.
* WHERE...Lower elevations of the Grand Canyon.
* WHEN...From 10 AM Saturday to 7 PM MST Tuesday.
* IMPACTS...Most individuals will be at risk for heat-related
illnesses without effective cooling or adequate hydration,
especially with prolonged outdoor exposure.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
This warning is reserved for only the hottest days of the year and
is issued when temperatures are expected to rise to dangerous levels.
Day hikers on Bright Angel Trail should descend no farther than 1
1/2 miles from the upper trailhead. Between the hours of 10 AM and 4
PM, hikers should be out of the canyon or at Havasupai Gardens or
Bright Angel campgrounds, physical activity is discouraged. All
hikers should have adequate gear, including a wide-brimmed hat,
sunscreen, salty snacks, sufficient water, and electrolyte mix.
Doubling your calorie intake helps maintain your energy.
Hike smart.
&&
$$
Lewandowski
