Extreme Heat Warning
URGENT - WEATHER MESSAGE
National Weather Service Flagstaff AZ
1148 AM MST Sat Aug 2 2025
AZZ006-040000-
/O.CON.KFGZ.XH.W.0004.000000T0000Z-250806T0200Z/
Grand Canyon Country-
Including the cities of North Rim, Supai, and Grand Canyon
Village
1148 AM MST Sat Aug 2 2025
...EXTREME HEAT WARNING REMAINS IN EFFECT UNTIL 7 PM MST TUESDAY
BELOW 4000 FEET...
* WHAT...Dangerously hot conditions below 4000 feet, with daytime
temperatures ranging from 103 degrees at Havasupai Gardens, to 113
degrees at Phantom Ranch.
* WHERE...Lower elevations of the Grand Canyon.
* WHEN...Until 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.
Take action when you see symptoms of heat exhaustion and heat
stroke. Anyone overcome by heat should be moved to a cool and shaded
location. Heat stroke is an emergency! Call 9 1 1.
Stay cool, stay hydrated, stay informed.
&&
$$
Humphreys
URGENT - WEATHER MESSAGE
National Weather Service Tucson AZ
111 AM MST Sat Aug 2 2025
AZZ501>507-509-515-022215-
/O.CON.KTWC.XH.W.0005.000000T0000Z-250806T0300Z/
/O.CON.KTWC.XH.A.0005.250806T1700Z-250809T0300Z/
Western Pima County-Tohono O`odham Nation-Upper Santa Cruz River
Valley/Altar Valley-Tucson Metro Area-South Central Pinal County-
Southeast Pinal County-Upper San Pedro River Valley-Upper Gila
River Valley-Baboquivari Mountains-
Including the cities of Marana, Sierra Vista, Sells, Nogales,
Clifton, Benson, Green Valley, Picacho Peak State Park, Mammoth,
Oracle, Safford, Kitt Peak, Tucson, Vail, Organ Pipe Cactus N.M.,
and Ajo
111 AM MST Sat Aug 2 2025
...EXTREME HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM MST TUESDAY...
...EXTREME HEAT WATCH REMAINS IN EFFECT FROM WEDNESDAY MORNING
THROUGH FRIDAY EVENING...
* WHAT...For the Extreme Heat Warning, dangerously hot conditions
with temperatures up to 110. For the Extreme Heat Watch,
dangerously hot conditions with temperatures up to 115 possible,
especially across portions of Pima county and south-central Pinal
county.
* WHERE...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...For the Extreme Heat Warning, until 8 PM MST Tuesday. For
the Extreme Heat Watch, from Wednesday morning through Friday
evening.
* IMPACTS...Heat related illnesses increase significantly during
extreme heat events.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Do not leave young children and pets in unattended vehicles. Car
interiors will reach lethal temperatures in a matter of minutes.
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.
&&
$$
URGENT - WEATHER MESSAGE
National Weather Service Phoenix AZ
105 AM MST Sat Aug 2 2025
AZZ534-538-539-541-549-552>555-559-022315-
/O.CON.KPSR.XH.W.0005.000000T0000Z-250803T0300Z/
/O.CON.KPSR.XH.A.0004.250805T1700Z-250809T0300Z/
Aguila Valley-Tonopah Desert-Gila Bend-Cave Creek/New River-
Fountain Hills/East Mesa-Superior-Northwest Pinal County-West
Pinal County-Apache Junction/Gold Canyon-Sonoran Desert Natl
Monument-
Including the cities of Wintersburg, Wickenburg, Scottsdale,
Cactus Forest, Hassayampa, Gila Bend, Florence, Coolidge, Apache
Junction, Sentinel, Tonopah, Fountain Hills, Superior, Gladden,
Casa Grande, Kaka, Arlington, and Aguila
105 AM MST Sat Aug 2 2025
...EXTREME HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM MST THIS
EVENING...
...EXTREME HEAT WATCH REMAINS IN EFFECT FROM TUESDAY MORNING THROUGH
FRIDAY EVENING...
* WHAT...For the Extreme Heat Warning, dangerously hot conditions.
Afternoon temperatures 108 to 114. Major Heat Risk. For the
Extreme Heat Watch, dangerously hot conditions possible. Afternoon
temperatures 108 to 118. Extreme Heat Risk.
* WHERE...Sonoran Desert National Monument, Aguila Valley, Tonopah
Desert, Gila Bend, Cave Creek/New River, Fountain Hills/East Mesa,
Superior, Northwest Pinal County, West Pinal County, and Apache
Junction/Gold Canyon.
* WHEN...For the Extreme Heat Warning, until 8 PM MST this evening.
For the Extreme Heat Watch, from Tuesday morning through Friday
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.
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.
An Extreme Heat Watch means that a period of very hot temperatures,
even by local standards, may occur. Actions should be taken to
lessen the impact of the extreme heat.
&&
$$
URGENT - WEATHER MESSAGE
National Weather Service Phoenix AZ
105 AM MST Sat Aug 2 2025
AZZ537-540-542>544-546-548-550-551-022315-
/O.CON.KPSR.XH.W.0005.000000T0000Z-250803T0300Z/
/O.CON.KPSR.XH.A.0004.250805T1700Z-250809T0300Z/
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, Beardsley, Sun Lakes, Sun City
West, Gilbert, Goodyear, Paradise Valley, Liberty, Avondale,
Phoenix, Chandler, Tempe, Surprise, Circle City, Queen Creek,
Wittmann, Cashion, and Mesa
105 AM MST Sat Aug 2 2025
...EXTREME HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM MST THIS
EVENING...
...EXTREME HEAT WATCH REMAINS IN EFFECT FROM TUESDAY MORNING THROUGH
FRIDAY EVENING...
* WHAT...For the Extreme Heat Warning, dangerously hot conditions.
Afternoon temperatures 110 to 114. Major Heat Risk. For the
Extreme Heat Watch, dangerously hot conditions possible. Afternoon
temperatures 110 to 118. Extreme 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.
* WHEN...For the Extreme Heat Warning, until 8 PM MST this evening.
For the Extreme Heat Watch, from Tuesday morning through Friday
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.
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.
An Extreme Heat Watch means that a period of very hot temperatures,
even by local standards, may occur. Actions should be taken to
lessen the impact of the extreme heat.
&&
$$
Red Flag Warning
URGENT - FIRE WEATHER MESSAGE
National Weather Service Grand Junction CO
501 AM MDT Sat Aug 2 2025
COZ200-202-203-207-290-UTZ487-490-491-030100-
/O.CON.KGJT.FW.W.0026.250802T1900Z-250803T0100Z/
Little Snake Forecast Area-White River Forecast Area-
Lower Colorado River-Southwest Colorado Lower Forecast Area-
Paradox Valley Forecast Area-Book Cliffs-Colorado River Basin-
Southeast Utah-
501 AM MDT Sat Aug 2 2025
...RED FLAG WARNING REMAINS IN EFFECT FROM 1 PM THIS AFTERNOON TO
7 PM MDT THIS EVENING FOR GUSTY WINDS, LOW RELATIVE HUMIDITY AND
DRY FUELS FOR FIRE WEATHER ZONES 200, 202, 203, 207, 290, 487,
490, AND 491...
* AFFECTED AREA...In Colorado, Fire Weather Zone 200 Little
Snake Forecast Area, Fire Weather Zone 202 White River
Forecast Area, Fire Weather Zone 203 Lower Colorado River,
Fire Weather Zone 207 Southwest Colorado Lower Forecast Area
and Fire Weather Zone 290 Paradox Valley Forecast Area. In
Utah, Fire Weather Zone 487 Book Cliffs, Fire Weather Zone 490
Colorado River Basin and Fire Weather Zone 491 Southeast Utah.
* TIMING...From 1 PM this afternoon to 7 PM MDT this evening.
* WINDS...Southwest 10 to 15 mph with gusts up to 30 mph.
* RELATIVE HUMIDITY...8 to 13 percent.
* IMPACTS...Any fire that develops will catch and spread
quickly. Outdoor burning is not recommended.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Red Flag Warning means that critical fire weather conditions
are either occurring now, or will shortly. A combination of
strong winds, low relative humidity, and warm temperatures can
contribute to extreme fire behavior.
&&
$$
URGENT - FIRE WEATHER MESSAGE
National Weather Service Salt Lake City UT
257 AM MDT Sat Aug 2 2025
UTZ493-496-022330-
/O.CON.KSLC.FW.W.0008.000000T0000Z-250803T0400Z/
/O.CON.KSLC.FW.A.0006.250804T1800Z-250805T0300Z/
Central Utah Mountains-Color Country Mountains-
257 AM MDT Sat Aug 2 2025
...RED FLAG WARNING REMAINS IN EFFECT UNTIL 10 PM MDT THIS
EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES
493 AND 496...
...FIRE WEATHER WATCH REMAINS IN EFFECT FROM MONDAY AFTERNOON
THROUGH MONDAY EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR
FIRE WEATHER ZONES 493 AND 496...
* AFFECTED AREA...Fire Weather Zone 493 Central Utah Mountains
and Fire Weather Zone 496 Color Country Mountains.
* WINDS...Southwest 10 to 20 mph with gusts to 25 to 35 mph both
Saturday and Monday afternoons. Lighter winds are forecast for
Sunday, remaining in the 5 to 10 mph range with gusts of 10 to
20 mph.
* RELATIVE HUMIDITY...Falling into the 5 to 9 percent range each
afternoon with very poor overnight recoveries.
* IMPACTS...Critical fire weather conditions are expected. Any
new fire starts or existing fires may spread rapidly.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Red Flag Warning means that critical fire weather conditions
are either occurring now...or are imminent. A combination of
strong winds...low relative humidity...and warm temperatures can
contribute to extreme fire behavior.
A Fire Weather Watch means that there is a potential for critical
fire weather conditions. Continue to monitor for the latest
forecasts and for possible Red Flag Warnings.
&&
$$
URGENT - FIRE WEATHER MESSAGE
National Weather Service Salt Lake City UT
257 AM MDT Sat Aug 2 2025
UTZ483-484-488-489-494-498-022330-
/O.CON.KSLC.FW.W.0008.250802T1800Z-250803T0400Z/
/O.CON.KSLC.FW.A.0006.250804T1800Z-250805T0300Z/
Southern Ashley National Forest-Tavaputs Plateau-
Manti National Forest-San Rafael Swell-Henry Mountains-
Grand Staircase-
257 AM MDT Sat Aug 2 2025
...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TODAY TO 10 PM
MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE
WEATHER ZONES 483, 484, 488, 489, 494, AND 498...
...FIRE WEATHER WATCH REMAINS IN EFFECT FROM MONDAY AFTERNOON
THROUGH MONDAY EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR
FIRE WEATHER ZONES 483, 484, 488, 489, 494, AND 498...
* AFFECTED AREA...Fire Weather Zone 483 Southern Ashley National
Forest, Fire Weather Zone 484 Tavaputs Plateau, Fire Weather
Zone 488 Manti National Forest, Fire Weather Zone 489 San
Rafael Swell, Fire Weather Zone 494 Henry Mountains and Fire
Weather Zone 498 Grand Staircase.
* WINDS...Southwest 10 to 20 mph with gusts to 25 to 35 mph both
Saturday and Monday afternoons. Lighter winds are forecast for
Sunday, remaining in the 5 to 10 mph range with gusts of 10 to
20 mph.
* RELATIVE HUMIDITY...Falling into the 5 to 9 percent range each
afternoon with very poor overnight recoveries.
* IMPACTS...Critical fire weather conditions are expected. Any
new fire starts or existing fires may spread rapidly.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Red Flag Warning means that critical fire weather conditions
are either occurring now...or are imminent. A combination of
strong winds...low relative humidity...and warm temperatures can
contribute to extreme fire behavior.
A Fire Weather Watch means that there is a potential for critical
fire weather conditions. Continue to monitor for the latest
forecasts and for possible Red Flag Warnings.
&&
$$
Extreme Heat Watch
URGENT - WEATHER MESSAGE
National Weather Service Tucson AZ
111 AM MST Sat Aug 2 2025
AZZ501>507-509-515-022215-
/O.CON.KTWC.XH.W.0005.000000T0000Z-250806T0300Z/
/O.CON.KTWC.XH.A.0005.250806T1700Z-250809T0300Z/
Western Pima County-Tohono O`odham Nation-Upper Santa Cruz River
Valley/Altar Valley-Tucson Metro Area-South Central Pinal County-
Southeast Pinal County-Upper San Pedro River Valley-Upper Gila
River Valley-Baboquivari Mountains-
Including the cities of Marana, Sierra Vista, Sells, Nogales,
Clifton, Benson, Green Valley, Picacho Peak State Park, Mammoth,
Oracle, Safford, Kitt Peak, Tucson, Vail, Organ Pipe Cactus N.M.,
and Ajo
111 AM MST Sat Aug 2 2025
...EXTREME HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM MST TUESDAY...
...EXTREME HEAT WATCH REMAINS IN EFFECT FROM WEDNESDAY MORNING
THROUGH FRIDAY EVENING...
* WHAT...For the Extreme Heat Warning, dangerously hot conditions
with temperatures up to 110. For the Extreme Heat Watch,
dangerously hot conditions with temperatures up to 115 possible,
especially across portions of Pima county and south-central Pinal
county.
* WHERE...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...For the Extreme Heat Warning, until 8 PM MST Tuesday. For
the Extreme Heat Watch, from Wednesday morning through Friday
evening.
* IMPACTS...Heat related illnesses increase significantly during
extreme heat events.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Do not leave young children and pets in unattended vehicles. Car
interiors will reach lethal temperatures in a matter of minutes.
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.
&&
$$
URGENT - WEATHER MESSAGE
National Weather Service Tucson AZ
111 AM MST Sat Aug 2 2025
AZZ508-022215-
/O.CON.KTWC.XH.A.0005.250806T1700Z-250809T0300Z/
Eastern Cochise County below 5000 feet-
Including the cities of Douglas and Willcox
111 AM MST Sat Aug 2 2025
...EXTREME HEAT WATCH REMAINS IN EFFECT FROM WEDNESDAY MORNING
THROUGH FRIDAY EVENING...
* WHAT...Dangerously hot conditions with temperatures up to 104
possible.
* WHERE...Eastern Cochise County below 5000 feet.
* WHEN...From Wednesday morning through Friday evening.
* IMPACTS...Heat related illnesses increase significantly during
extreme heat events.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
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.
&&
$$
GEL
URGENT - WEATHER MESSAGE
National Weather Service Phoenix AZ
105 AM MST Sat Aug 2 2025
AZZ530>533-535-536-CAZ560>570-022315-
/O.CON.KPSR.XH.A.0004.250806T1700Z-250809T0300Z/
Parker Valley-Kofa-Yuma-Central La Paz-Southeast Yuma County-Gila
River Valley-Joshua Tree NP West-Joshua Tree NP East-Imperial
County Southwest-Salton Sea-Chuckwalla Mountains-Imperial County
Southeast-Imperial County West-Imperial Valley-Chiriaco Summit-
Palo Verde Valley-Chuckwalla Valley-
Including the cities of Vicksburg, Ligurta, Plaster City, Palo
Verde, Midland, Calexico, Brenda, Winterhaven, Martinez Lake,
Salton City, Salome, Cottonwood Visitor, Fortuna Foothills,
Chiriaco Summit, Coyote Wells, Ocotillo, Blythe, Ehrenberg,
Imperial Hot Mineral Springs, Parker, Harcuvar, Alamorio, Yuma,
Lost Horse-Keys Village, Winona, Coolidge Springs, Vicksburg
Junction, Desert Shores, Palm Canyon, El Centro, Ripley, Brawley,
Mountain Spring, and Quartzsite
105 AM MST Sat Aug 2 2025 /105 AM PDT Sat Aug 2 2025/
...EXTREME HEAT WATCH REMAINS IN EFFECT FROM WEDNESDAY MORNING
THROUGH FRIDAY EVENING...
* WHAT...Dangerously hot conditions possible. Afternoon temperatures
108 to 118. Major Heat Risk.
* WHERE...Portions of southwest Arizona and southeast and southern
California.
* WHEN...From Wednesday morning through Friday 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.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
An Extreme Heat Watch means that a period of very hot temperatures,
even by local standards, may 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.
&&
$$
INS
URGENT - WEATHER MESSAGE
National Weather Service Phoenix AZ
105 AM MST Sat Aug 2 2025
AZZ534-538-539-541-549-552>555-559-022315-
/O.CON.KPSR.XH.W.0005.000000T0000Z-250803T0300Z/
/O.CON.KPSR.XH.A.0004.250805T1700Z-250809T0300Z/
Aguila Valley-Tonopah Desert-Gila Bend-Cave Creek/New River-
Fountain Hills/East Mesa-Superior-Northwest Pinal County-West
Pinal County-Apache Junction/Gold Canyon-Sonoran Desert Natl
Monument-
Including the cities of Wintersburg, Wickenburg, Scottsdale,
Cactus Forest, Hassayampa, Gila Bend, Florence, Coolidge, Apache
Junction, Sentinel, Tonopah, Fountain Hills, Superior, Gladden,
Casa Grande, Kaka, Arlington, and Aguila
105 AM MST Sat Aug 2 2025
...EXTREME HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM MST THIS
EVENING...
...EXTREME HEAT WATCH REMAINS IN EFFECT FROM TUESDAY MORNING THROUGH
FRIDAY EVENING...
* WHAT...For the Extreme Heat Warning, dangerously hot conditions.
Afternoon temperatures 108 to 114. Major Heat Risk. For the
Extreme Heat Watch, dangerously hot conditions possible. Afternoon
temperatures 108 to 118. Extreme Heat Risk.
* WHERE...Sonoran Desert National Monument, Aguila Valley, Tonopah
Desert, Gila Bend, Cave Creek/New River, Fountain Hills/East Mesa,
Superior, Northwest Pinal County, West Pinal County, and Apache
Junction/Gold Canyon.
* WHEN...For the Extreme Heat Warning, until 8 PM MST this evening.
For the Extreme Heat Watch, from Tuesday morning through Friday
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.
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.
An Extreme Heat Watch means that a period of very hot temperatures,
even by local standards, may occur. Actions should be taken to
lessen the impact of the extreme heat.
&&
$$
URGENT - WEATHER MESSAGE
National Weather Service Phoenix AZ
105 AM MST Sat Aug 2 2025
AZZ537-540-542>544-546-548-550-551-022315-
/O.CON.KPSR.XH.W.0005.000000T0000Z-250803T0300Z/
/O.CON.KPSR.XH.A.0004.250805T1700Z-250809T0300Z/
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, Beardsley, Sun Lakes, Sun City
West, Gilbert, Goodyear, Paradise Valley, Liberty, Avondale,
Phoenix, Chandler, Tempe, Surprise, Circle City, Queen Creek,
Wittmann, Cashion, and Mesa
105 AM MST Sat Aug 2 2025
...EXTREME HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM MST THIS
EVENING...
...EXTREME HEAT WATCH REMAINS IN EFFECT FROM TUESDAY MORNING THROUGH
FRIDAY EVENING...
* WHAT...For the Extreme Heat Warning, dangerously hot conditions.
Afternoon temperatures 110 to 114. Major Heat Risk. For the
Extreme Heat Watch, dangerously hot conditions possible. Afternoon
temperatures 110 to 118. Extreme 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.
* WHEN...For the Extreme Heat Warning, until 8 PM MST this evening.
For the Extreme Heat Watch, from Tuesday morning through Friday
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.
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.
An Extreme Heat Watch means that a period of very hot temperatures,
even by local standards, may occur. Actions should be taken to
lessen the impact of the extreme heat.
&&
$$
URGENT - WEATHER MESSAGE
National Weather Service Phoenix AZ
105 AM MST Sat Aug 2 2025
AZZ545-556>558-560>563-022315-
/O.CON.KPSR.XH.A.0004.250805T1700Z-250809T0300Z/
New River Mesa-Tonto Basin-Mazatzal Mountains-Pinal/Superstition
Mountains-San Carlos-Dripping Springs-Globe/Miami-Southeast Gila
County-
Including the cities of San Carlos, Winkelman, Hayden, Peridot,
Globe, Miami, Punkin Center, and Sunflower
105 AM MST Sat Aug 2 2025
...EXTREME HEAT WATCH REMAINS IN EFFECT FROM TUESDAY MORNING THROUGH
FRIDAY EVENING...
* WHAT...Dangerously hot conditions possible. Afternoon temperatures
97 to 113. Extreme Heat Risk.
* WHERE...Dripping Springs, Globe/Miami, Mazatzal Mountains, New
River Mesa, Pinal/Superstition Mountains, San Carlos, Southeast
Gila County, and Tonto Basin.
* WHEN...From Tuesday morning through Friday 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.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
An Extreme Heat Watch means that a period of very hot temperatures,
even by local standards, may 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.
&&
$$
URGENT - WEATHER MESSAGE
National Weather Service Phoenix AZ
105 AM MST Sat Aug 2 2025
AZZ547-022315-
/O.CON.KPSR.XH.A.0004.250805T1700Z-250809T0300Z/
Rio Verde/Salt River-
Including the cities of Tortilla Flat
105 AM MST Sat Aug 2 2025
...EXTREME HEAT WATCH REMAINS IN EFFECT FROM TUESDAY MORNING THROUGH
FRIDAY EVENING...
* WHAT...Dangerously hot conditions possible. Afternoon temperatures
106 to 117. Major Heat Risk.
* WHERE...Rio Verde/Salt River.
* WHEN...From Tuesday morning through Friday evening.
* IMPACTS...Heat related illnesses increase significantly during
extreme heat events. Overexposure can cause heat cramps and heat
exhaustion to develop and, without intervention, can lead to heat
stroke.
* ADDITIONAL DETAILS...In Maricopa County, call 2-1-1 to find a free
cooling center, transportation, water, and more.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
An Extreme Heat Watch means that a period of very hot temperatures,
even by local standards, may occur. Actions should be taken to
lessen the impact of the extreme heat.
Take extra precautions if you work or spend time outside. When
possible, reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stroke. Wear lightweight and loose-fitting clothing when possible
and drink plenty of water.
To reduce risk during outdoor work, the Occupational Safety and
Health Administration recommends scheduling frequent rest breaks in
shaded or air conditioned environments. Anyone overcome by heat
should be moved to a cool and shaded location. Heat stroke is an
emergency! Call 9 1 1.
Public cooling shelters are available in some areas. Consult county
officials for more details.
&&
$$
Fire Weather Watch
URGENT - FIRE WEATHER MESSAGE
National Weather Service Salt Lake City UT
257 AM MDT Sat Aug 2 2025
UTZ493-496-022330-
/O.CON.KSLC.FW.W.0008.000000T0000Z-250803T0400Z/
/O.CON.KSLC.FW.A.0006.250804T1800Z-250805T0300Z/
Central Utah Mountains-Color Country Mountains-
257 AM MDT Sat Aug 2 2025
...RED FLAG WARNING REMAINS IN EFFECT UNTIL 10 PM MDT THIS
EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES
493 AND 496...
...FIRE WEATHER WATCH REMAINS IN EFFECT FROM MONDAY AFTERNOON
THROUGH MONDAY EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR
FIRE WEATHER ZONES 493 AND 496...
* AFFECTED AREA...Fire Weather Zone 493 Central Utah Mountains
and Fire Weather Zone 496 Color Country Mountains.
* WINDS...Southwest 10 to 20 mph with gusts to 25 to 35 mph both
Saturday and Monday afternoons. Lighter winds are forecast for
Sunday, remaining in the 5 to 10 mph range with gusts of 10 to
20 mph.
* RELATIVE HUMIDITY...Falling into the 5 to 9 percent range each
afternoon with very poor overnight recoveries.
* IMPACTS...Critical fire weather conditions are expected. Any
new fire starts or existing fires may spread rapidly.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Red Flag Warning means that critical fire weather conditions
are either occurring now...or are imminent. A combination of
strong winds...low relative humidity...and warm temperatures can
contribute to extreme fire behavior.
A Fire Weather Watch means that there is a potential for critical
fire weather conditions. Continue to monitor for the latest
forecasts and for possible Red Flag Warnings.
&&
$$
URGENT - FIRE WEATHER MESSAGE
National Weather Service Salt Lake City UT
257 AM MDT Sat Aug 2 2025
UTZ492-495-497-022330-
/O.CON.KSLC.FW.A.0006.250804T1800Z-250805T0300Z/
Central Utah West Desert-Color Country West Desert-Mojave Desert-
257 AM MDT Sat Aug 2 2025
...FIRE WEATHER WATCH REMAINS IN EFFECT FROM MONDAY AFTERNOON
THROUGH MONDAY EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR
FIRE WEATHER ZONES 492, 495, AND 497...
* AFFECTED AREA...Fire Weather Zone 492 Central Utah West
Desert, Fire Weather Zone 495 Color Country West Desert and
Fire Weather Zone 497 Mojave Desert.
* WINDS...Southwest winds 15 to 25 mph with gusts 30 to 35 mph.
* RELATIVE HUMIDITY...Falling into the 5 to 9 percent range.
* IMPACTS...Critical fire weather conditions are expected. Any
new fire starts or existing fires may spread rapidly.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Fire Weather Watch means that there is a potential for critical
fire weather conditions. Continue to monitor for the latest
forecasts and for possible Red Flag Warnings.
&&
$$
For more information from the National Weather Service visit
http://weather.gov/saltlakecity
URGENT - FIRE WEATHER MESSAGE
National Weather Service Salt Lake City UT
257 AM MDT Sat Aug 2 2025
UTZ483-484-488-489-494-498-022330-
/O.CON.KSLC.FW.W.0008.250802T1800Z-250803T0400Z/
/O.CON.KSLC.FW.A.0006.250804T1800Z-250805T0300Z/
Southern Ashley National Forest-Tavaputs Plateau-
Manti National Forest-San Rafael Swell-Henry Mountains-
Grand Staircase-
257 AM MDT Sat Aug 2 2025
...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TODAY TO 10 PM
MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE
WEATHER ZONES 483, 484, 488, 489, 494, AND 498...
...FIRE WEATHER WATCH REMAINS IN EFFECT FROM MONDAY AFTERNOON
THROUGH MONDAY EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR
FIRE WEATHER ZONES 483, 484, 488, 489, 494, AND 498...
* AFFECTED AREA...Fire Weather Zone 483 Southern Ashley National
Forest, Fire Weather Zone 484 Tavaputs Plateau, Fire Weather
Zone 488 Manti National Forest, Fire Weather Zone 489 San
Rafael Swell, Fire Weather Zone 494 Henry Mountains and Fire
Weather Zone 498 Grand Staircase.
* WINDS...Southwest 10 to 20 mph with gusts to 25 to 35 mph both
Saturday and Monday afternoons. Lighter winds are forecast for
Sunday, remaining in the 5 to 10 mph range with gusts of 10 to
20 mph.
* RELATIVE HUMIDITY...Falling into the 5 to 9 percent range each
afternoon with very poor overnight recoveries.
* IMPACTS...Critical fire weather conditions are expected. Any
new fire starts or existing fires may spread rapidly.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Red Flag Warning means that critical fire weather conditions
are either occurring now...or are imminent. A combination of
strong winds...low relative humidity...and warm temperatures can
contribute to extreme fire behavior.
A Fire Weather Watch means that there is a potential for critical
fire weather conditions. Continue to monitor for the latest
forecasts and for possible Red Flag Warnings.
&&
$$
Hazardous Weather Outlook
Hazardous Weather Outlook
National Weather Service Grand Junction CO
354 AM MDT Sat Aug 2 2025
COZ001>014-017>023-UTZ022>025-027>029-031330-
Lower Yampa River Basin-Central Yampa River Basin-
Roan and Tavaputs Plateaus-Elkhead and Park Mountains-
Upper Yampa River Basin-Grand Valley-Debeque to Silt Corridor-
Central Colorado River Basin-Grand and Battlement Mesas-
Gore and Elk Mountains/Central Mountain Valleys-
Central Gunnison and Uncompahgre River Basin-
West Elk and Sawatch Mountains-Flat Tops-Upper Gunnison River Valley-
Uncompahgre Plateau and Dallas Divide-Northwest San Juan Mountains-
Southwest San Juan Mountains-Paradox Valley/Lower Dolores River-
Four Corners/Upper Dolores River-Animas River Basin-
San Juan River Basin-Southeast Utah-Eastern Uinta Mountains-
Eastern Uinta Basin-Tavaputs Plateau-Arches/Grand Flat-
La Sal and Abajo Mountains-Canyonlands/Natural Bridges-
354 AM MDT Sat Aug 2 2025
This Hazardous Weather Outlook is for northwest Colorado, southwest
Colorado, west central Colorado, east central Utah, northeast Utah
and southeast Utah.
.DAY ONE...Today and tonight.
Isolated to scattered showers and storms will favor the central
mountains and areas north this afternoon and evening.
Dry air and gusty winds of 20 to 30 mph will bring critical fire
weather conditions to the region this afternoon. Red Flag Warnings
remain in effect to account for this.
.DAYS TWO THROUGH SEVEN...Sunday through Friday.
Dry air and gusty winds are possible through the next several days
causing an uptick in critical fire weather conditions.
.SPOTTER INFORMATION STATEMENT...
Spotter activation is not expected at this time.
$$
