Alert archive / Arizona / Excessive Heat Warnings in 2021
Excessive Heat Warning 8, NWS Phoenix, AZ
NWS Phoenix, AZ issued this excessive heat warning at Sep 10, 2021, 2:19 AM PDT for Imperial County, Riverside County, San Bernardino County, California; 4 counties in Arizona. It took effect at Sep 12, 2021, 10:00 AM PDT. It was in force for 34 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Sep 10, 2021, 2:19 AM PDT (09:19 UTC)
- In effect from
- Sep 12, 2021, 10:00 AM PDT
- Expired
- Sep 13, 2021, 8:00 PM PDT
- In force
- 34 hr
- Issued by
- NWS Phoenix, AZ
Counties La Paz County, AZ, Maricopa County, AZ, Pinal County, AZ, Yuma County, AZ, Imperial County, CA, Riverside County, CA, San Bernardino County, CA
The radar
The Yuma radar (KYUX), 118 km from the middle of the area, began a volume at 09:19 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Yuma Prvg Ground, AZ (K1Y7), launched 00:00Z, 9.3 hours before the alert went out and 111 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 1562 J/kg
- Mixed-layer CIN
- -55 J/kg
- Mixed-layer LCL
- 2826 m above ground
- 0-6 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- 4 m²/s²
- 0-3 km storm-relative helicity
- 173 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 4.4
The text
As transmitted.
285 WWUS75 KPSR 100919 NPWPSR URGENT - WEATHER MESSAGE National Weather Service Phoenix AZ 219 AM MST Fri Sep 10 2021 AZZ537-540>544-546-548>551-553>555-110000- /O.NEW.KPSR.EH.W.0008.210912T1700Z-210914T0300Z/ Northwest Valley-Buckeye/Avondale-Cave Creek/New River- Deer Valley-Central Phoenix-North Phoenix/Glendale- Scottsdale/Paradise Valley-East Valley-Fountain Hills/East Mesa- South Mountain/Ahwatukee-Southeast Valley/Queen Creek- Northwest Pinal County-West Pinal County- Apache Junction/Gold Canyon- Including the cities of Circle City, Surprise, Wittmann, Beardsley, Sun City West, Avondale, Cashion, Goodyear, Liberty, Scottsdale, Peoria, Phoenix, Paradise Valley, Mesa, Chandler, Tempe, Gilbert, Fountain Hills, Sun Lakes, Queen Creek, Casa Grande, Florence, Coolidge, and Apache Junction 219 AM MST Fri Sep 10 2021 ...EXCESSIVE HEAT WARNING IN EFFECT FROM 10 AM SUNDAY TO 8 PM MST MONDAY... * WHAT...Dangerously hot conditions. Afternoon temperatures 106 to 110 expected. * WHERE...Portions of south central Arizona. * WHEN...From 10 AM Sunday to 8 PM MST Monday. * IMPACTS...High Heat Risk. Overexposure can cause heat cramps and heat exhaustion to develop and, without intervention, can lead to heat stroke. PRECAUTIONARY/PREPAREDNESS ACTIONS... An Excessive 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. Stay indoors and seek air-conditioned buildings. Drink water, more than usual, and avoid dehydrating alcoholic, sugary, or caffeinated drinks. Dress for the heat - lightweight and light- colored clothing. Eat small meals and eat more often. Monitor those with a higher vulnerability to heat, including small children. Check in on family, friends, and neighbors, especially the elderly. If engaging in outdoor activity, take longer and more frequent breaks and avoid the hottest parts of the day. Never leave kids or pets unattended in cars. Public cooling shelters are available in some areas. Consult county officials for more details, which may include guidance for proper social distancing measures. Recognize the signs and symptoms of heat-related illness. Early signs include thirst and muscle cramps. Heat exhaustion may include: cool, moist, pale skin; headache; dizziness; weakness or exhaustion; nausea. The most serious illness is heat stroke, which may include: vomiting; confusion; throbbing headache; decreased alertness or loss of consciousness; high body temperature (above 105F); hot, dry skin; rapid, weak pulse; rapid, shallow breathing; seizures. Heat stroke can be DEADLY. Treat as an emergency and call 9 1 1. Continue to monitor NWS forecasts, broadcast outlets, and local government for updates. && $$ AZZ530-531-533>536-538-539-559-110000- /O.NEW.KPSR.EH.W.0008.210912T1700Z-210914T0300Z/ Parker Valley-Kofa-Central La Paz-Aguila Valley- Southeast Yuma County-Gila River Valley-Tonopah Desert-Gila Bend- Sonoran Desert Natl Monument- Including the cities of Parker, Ehrenberg, Palm Canyon, Brenda, Harcuvar, Quartzsite, Vicksburg, Vicksburg Junction, Salome, Aguila, Gladden, Wickenburg, Ligurta, Arlington, Hassayampa, Tonopah, Wintersburg, Gila Bend, Sentinel, and Kaka 219 AM MST Fri Sep 10 2021 ...EXCESSIVE HEAT WARNING IN EFFECT FROM 10 AM SUNDAY TO 8 PM MST MONDAY... * WHAT...Dangerously hot conditions. Afternoon temperatures 106 to 112 expected. * WHERE...Parker Valley, Kofa, Central La Paz County, Aguila Valley, Southeast Yuma County, Gila River Valley, Tonopah Desert, Gila Bend and Sonoran Desert National Monument. * WHEN...From 10 AM Sunday to 8 PM MST Monday. * IMPACTS...High Heat Risk. Overexposure can cause heat cramps and heat exhaustion to develop and, without intervention, can lead to heat stroke. PRECAUTIONARY/PREPAREDNESS ACTIONS... An Excessive 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. Stay indoors and seek air-conditioned buildings. Drink water, more than usual, and avoid dehydrating alcoholic, sugary, or caffeinated drinks. Dress for the heat - lightweight and light- colored clothing. Eat small meals and eat more often. Monitor those with a higher vulnerability to heat, including small children. Check in on family, friends, and neighbors, especially the elderly. If engaging in outdoor activity, take longer and more frequent breaks and avoid the hottest parts of the day. Never leave kids or pets unattended in cars. Public cooling shelters are available in some areas. Consult county officials for more details, which may include guidance for proper social distancing measures. Recognize the signs and symptoms of heat-related illness. Early signs include thirst and muscle cramps. Heat exhaustion may include: cool, moist, pale skin; headache; dizziness; weakness or exhaustion; nausea. The most serious illness is heat stroke, which may include: vomiting; confusion; throbbing headache; decreased alertness or loss of consciousness; high body temperature (above 105F); hot, dry skin; rapid, weak pulse; rapid, shallow breathing; seizures. Heat stroke can be DEADLY. Treat as an emergency and call 9 1 1. Continue to monitor NWS forecasts, broadcast outlets, and local government for updates. && $$ AZZ532-CAZ561-565>567-569-570-110000- /O.NEW.KPSR.EH.W.0008.210912T1700Z-210914T0300Z/ Yuma-Joshua Tree NP East-Imperial County Southeast- Imperial County West-Imperial Valley-Palo Verde Valley- Chuckwalla Valley- Including the cities of Yuma, Fortuna Foothills, Winterhaven, Coolidge Springs, Salton City, Winona, Coyote Wells, Plaster City, El Centro, Calexico, Alamorio, Brawley, Martinez Lake, Blythe, Palo Verde, Ripley, and Midland 219 AM MST Fri Sep 10 2021 /219 AM PDT Fri Sep 10 2021/ ...EXCESSIVE HEAT WARNING IN EFFECT FROM 10 AM MST /10 AM PDT/ SUNDAY TO 8 PM MST /8 PM PDT/ MONDAY... * WHAT...Dangerously hot conditions. Afternoon temperatures 107 to 115 expected. * WHERE...In Arizona, Yuma. In California, Eastern portion of Joshua Tree National Park, Southeastern Imperial County, Western Imperial County, Imperial Valley, Palo Verde Valley and Chuckwalla Valley. * WHEN...From 10 AM MST /10 AM PDT/ Sunday to 8 PM MST /8 PM PDT/ Monday. * IMPACTS...High Heat Risk. Overexposure can cause heat cramps and heat exhaustion to develop and, without intervention, can lead to heat stroke. PRECAUTIONARY/PREPAREDNESS ACTIONS... An Excessive 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. Stay indoors and seek air-conditioned buildings. Drink water, more than usual, and avoid dehydrating alcoholic, sugary, or caffeinated drinks. Dress for the heat - lightweight and light- colored clothing. Eat small meals and eat more often. Monitor those with a higher vulnerability to heat, including small children. Check in on family, friends, and neighbors, especially the elderly. If engaging in outdoor activity, take longer and more frequent breaks and avoid the hottest parts of the day. Never leave kids or pets unattended in cars. Public cooling shelters are available in some areas. Consult county officials for more details, which may include guidance for proper social distancing measures. Recognize the signs and symptoms of heat-related illness. Early signs include thirst and muscle cramps. Heat exhaustion may include: cool, moist, pale skin; headache; dizziness; weakness or exhaustion; nausea. The most serious illness is heat stroke, which may include: vomiting; confusion; throbbing headache; decreased alertness or loss of consciousness; high body temperature (above 105F); hot, dry skin; rapid, weak pulse; rapid, shallow breathing; seizures. Heat stroke can be DEADLY. Treat as an emergency and call 9 1 1. Continue to monitor NWS forecasts, broadcast outlets, and local government for updates. && $$
6 follow-up statements
727 WWUS75 KPSR 101928 NPWPSR URGENT - WEATHER MESSAGE National Weather Service Phoenix AZ 1228 PM MST Fri Sep 10 2021 AZZ537-540>544-546-548>551-553>555-111100- /O.CON.KPSR.EH.W.0008.210912T1700Z-210914T0300Z/ Northwest Valley-Buckeye/Avondale-Cave Creek/New River- Deer Valley-Central Phoenix-North Phoenix/Glendale- Scottsdale/Paradise Valley-East Valley-Fountain Hills/East Mesa- South Mountain/Ahwatukee-Southeast Valley/Queen Creek- Northwest Pinal County-West Pinal County- Apache Junction/Gold Canyon- Including the cities of Circle City, Surprise, Wittmann, Beardsley, Sun City West, Avondale, Cashion, Goodyear, Liberty, Scottsdale, Peoria, Phoenix, Paradise Valley, Mesa, Chandler, Tempe, Gilbert, Fountain Hills, Sun Lakes, Queen Creek, Casa Grande, Florence, Coolidge, and Apache Junction 1228 PM MST Fri Sep 10 2021 ...EXCESSIVE HEAT WARNING REMAINS IN EFFECT FROM 10 AM SUNDAY TO 8 PM MST MONDAY... * WHAT...Dangerously hot conditions. Afternoon temperatures 106 to 110 expected. * WHERE...Portions of south central Arizona. * WHEN...From 10 AM Sunday to 8 PM MST Monday. * IMPACTS...High Heat Risk. Overexposure can cause heat cramps and heat exhaustion to develop and, without intervention, can lead to heat stroke. PRECAUTIONARY/PREPAREDNESS ACTIONS... An Excessive 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. Stay indoors and seek air-conditioned buildings. Drink water, more than usual, and avoid dehydrating alcoholic, sugary, or caffeinated drinks. Dress for the heat - lightweight and light- colored clothing. Eat small meals and eat more often. Monitor those with a higher vulnerability to heat, including small children. Check in on family, friends, and neighbors, especially the elderly. If engaging in outdoor activity, take longer and more frequent breaks and avoid the hottest parts of the day. Never leave kids or pets unattended in cars. Public cooling shelters are available in some areas. Consult county officials for more details, which may include guidance for proper social distancing measures. Recognize the signs and symptoms of heat-related illness. Early signs include thirst and muscle cramps. Heat exhaustion may include: cool, moist, pale skin; headache; dizziness; weakness or exhaustion; nausea. The most serious illness is heat stroke, which may include: vomiting; confusion; throbbing headache; decreased alertness or loss of consciousness; high body temperature (above 105F); hot, dry skin; rapid, weak pulse; rapid, shallow breathing; seizures. Heat stroke can be DEADLY. Treat as an emergency and call 9 1 1. Continue to monitor NWS forecasts, broadcast outlets, and local government for updates. && $$ AZZ530-531-533>536-538-539-559-111100- /O.CON.KPSR.EH.W.0008.210912T1700Z-210914T0300Z/ Parker Valley-Kofa-Central La Paz-Aguila Valley- Southeast Yuma County-Gila River Valley-Tonopah Desert-Gila Bend- Sonoran Desert Natl Monument- Including the cities of Parker, Ehrenberg, Palm Canyon, Brenda, Harcuvar, Quartzsite, Vicksburg, Vicksburg Junction, Salome, Aguila, Gladden, Wickenburg, Ligurta, Arlington, Hassayampa, Tonopah, Wintersburg, Gila Bend, Sentinel, and Kaka 1228 PM MST Fri Sep 10 2021 ...EXCESSIVE HEAT WARNING REMAINS IN EFFECT FROM 10 AM SUNDAY TO 8 PM MST MONDAY... * WHAT...Dangerously hot conditions. Afternoon temperatures 106 to 112 expected. * WHERE...Parker Valley, Kofa, Central La Paz County, Aguila Valley, Southeast Yuma County, Gila River Valley, Tonopah Desert, Gila Bend and Sonoran Desert National Monument. * WHEN...From 10 AM Sunday to 8 PM MST Monday. * IMPACTS...High Heat Risk. Overexposure can cause heat cramps and heat exhaustion to develop and, without intervention, can lead to heat stroke. PRECAUTIONARY/PREPAREDNESS ACTIONS... An Excessive 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. Stay indoors and seek air-conditioned buildings. Drink water, more than usual, and avoid dehydrating alcoholic, sugary, or caffeinated drinks. Dress for the heat - lightweight and light- colored clothing. Eat small meals and eat more often. Monitor those with a higher vulnerability to heat, including small children. Check in on family, friends, and neighbors, especially the elderly. If engaging in outdoor activity, take longer and more frequent breaks and avoid the hottest parts of the day. Never leave kids or pets unattended in cars. Public cooling shelters are available in some areas. Consult county officials for more details, which may include guidance for proper social distancing measures. Recognize the signs and symptoms of heat-related illness. Early signs include thirst and muscle cramps. Heat exhaustion may include: cool, moist, pale skin; headache; dizziness; weakness or exhaustion; nausea. The most serious illness is heat stroke, which may include: vomiting; confusion; throbbing headache; decreased alertness or loss of consciousness; high body temperature (above 105F); hot, dry skin; rapid, weak pulse; rapid, shallow breathing; seizures. Heat stroke can be DEADLY. Treat as an emergency and call 9 1 1. Continue to monitor NWS forecasts, broadcast outlets, and local government for updates. && $$ AZZ532-CAZ561-565>567-569-570-111100- /O.CON.KPSR.EH.W.0008.210912T1700Z-210914T0300Z/ Yuma-Joshua Tree NP East-Imperial County Southeast- Imperial County West-Imperial Valley-Palo Verde Valley- Chuckwalla Valley- Including the cities of Yuma, Fortuna Foothills, Winterhaven, Coolidge Springs, Salton City, Winona, Coyote Wells, Plaster City, El Centro, Calexico, Alamorio, Brawley, Martinez Lake, Blythe, Palo Verde, Ripley, and Midland 1228 PM MST Fri Sep 10 2021 /1228 PM PDT Fri Sep 10 2021/ ...EXCESSIVE HEAT WARNING REMAINS IN EFFECT FROM 10 AM MST /10 AM PDT/ SUNDAY TO 8 PM MST /8 PM PDT/ MONDAY... * WHAT...Dangerously hot conditions. Afternoon temperatures 107 to 115 expected. * WHERE...In Arizona, Yuma. In California, Eastern portion of Joshua Tree National Park, Southeastern Imperial County, Western Imperial County, Imperial Valley, Palo Verde Valley and Chuckwalla Valley. * WHEN...From 10 AM MST /10 AM PDT/ Sunday to 8 PM MST /8 PM PDT/ Monday. * IMPACTS...High Heat Risk. Overexposure can cause heat cramps and heat exhaustion to develop and, without intervention, can lead to heat stroke. PRECAUTIONARY/PREPAREDNESS ACTIONS... An Excessive 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. Stay indoors and seek air-conditioned buildings. Drink water, more than usual, and avoid dehydrating alcoholic, sugary, or caffeinated drinks. Dress for the heat - lightweight and light- colored clothing. Eat small meals and eat more often. Monitor those with a higher vulnerability to heat, including small children. Check in on family, friends, and neighbors, especially the elderly. If engaging in outdoor activity, take longer and more frequent breaks and avoid the hottest parts of the day. Never leave kids or pets unattended in cars. Public cooling shelters are available in some areas. Consult county officials for more details, which may include guidance for proper social distancing measures. Recognize the signs and symptoms of heat-related illness. Early signs include thirst and muscle cramps. Heat exhaustion may include: cool, moist, pale skin; headache; dizziness; weakness or exhaustion; nausea. The most serious illness is heat stroke, which may include: vomiting; confusion; throbbing headache; decreased alertness or loss of consciousness; high body temperature (above 105F); hot, dry skin; rapid, weak pulse; rapid, shallow breathing; seizures. Heat stroke can be DEADLY. Treat as an emergency and call 9 1 1. Continue to monitor NWS forecasts, broadcast outlets, and local government for updates. && $$
662 WWUS75 KPSR 110815 NPWPSR URGENT - WEATHER MESSAGE National Weather Service Phoenix AZ 115 AM MST Sat Sep 11 2021 AZZ537-540>544-546-548>551-553>555-120000- /O.CON.KPSR.EH.W.0008.210912T1700Z-210914T0300Z/ Northwest Valley-Buckeye/Avondale-Cave Creek/New River- Deer Valley-Central Phoenix-North Phoenix/Glendale- Scottsdale/Paradise Valley-East Valley-Fountain Hills/East Mesa- South Mountain/Ahwatukee-Southeast Valley/Queen Creek- Northwest Pinal County-West Pinal County- Apache Junction/Gold Canyon- Including the cities of Circle City, Surprise, Wittmann, Beardsley, Sun City West, Avondale, Cashion, Goodyear, Liberty, Scottsdale, Peoria, Phoenix, Paradise Valley, Mesa, Chandler, Tempe, Gilbert, Fountain Hills, Sun Lakes, Queen Creek, Casa Grande, Florence, Coolidge, and Apache Junction 115 AM MST Sat Sep 11 2021 ...EXCESSIVE HEAT WARNING REMAINS IN EFFECT FROM 10 AM SUNDAY TO 8 PM MST MONDAY... * WHAT...Dangerously hot conditions. Afternoon temperatures 107 to 111 expected. * WHERE...Portions of south central Arizona. * WHEN...From 10 AM Sunday to 8 PM MST Monday. * IMPACTS...High Heat Risk. Overexposure can cause heat cramps and heat exhaustion to develop and, without intervention, can lead to heat stroke. PRECAUTIONARY/PREPAREDNESS ACTIONS... An Excessive 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. Stay indoors and seek air-conditioned buildings. Drink water, more than usual, and avoid dehydrating alcoholic, sugary, or caffeinated drinks. Dress for the heat - lightweight and light- colored clothing. Eat small meals and eat more often. Monitor those with a higher vulnerability to heat, including small children. Check in on family, friends, and neighbors, especially the elderly. If engaging in outdoor activity, take longer and more frequent breaks and avoid the hottest parts of the day. Never leave kids or pets unattended in cars. Public cooling shelters are available in some areas. Consult county officials for more details, which may include guidance for proper social distancing measures. Recognize the signs and symptoms of heat-related illness. Early signs include thirst and muscle cramps. Heat exhaustion may include: cool, moist, pale skin; headache; dizziness; weakness or exhaustion; nausea. The most serious illness is heat stroke, which may include: vomiting; confusion; throbbing headache; decreased alertness or loss of consciousness; high body temperature (above 105F); hot, dry skin; rapid, weak pulse; rapid, shallow breathing; seizures. Heat stroke can be DEADLY. Treat as an emergency and call 9 1 1. Continue to monitor NWS forecasts, broadcast outlets, and local government for updates. && $$ AZZ530-531-533>536-538-539-559-120000- /O.CON.KPSR.EH.W.0008.210912T1700Z-210914T0300Z/ Parker Valley-Kofa-Central La Paz-Aguila Valley- Southeast Yuma County-Gila River Valley-Tonopah Desert-Gila Bend- Sonoran Desert Natl Monument- Including the cities of Parker, Ehrenberg, Palm Canyon, Brenda, Harcuvar, Quartzsite, Vicksburg, Vicksburg Junction, Salome, Aguila, Gladden, Wickenburg, Ligurta, Arlington, Hassayampa, Tonopah, Wintersburg, Gila Bend, Sentinel, and Kaka 115 AM MST Sat Sep 11 2021 ...EXCESSIVE HEAT WARNING REMAINS IN EFFECT FROM 10 AM SUNDAY TO 8 PM MST MONDAY... * WHAT...Dangerously hot conditions. Afternoon temperatures 107 to 111 expected. * WHERE...Sonoran Desert National Monument, Southeast Yuma County, Aguila Valley, Gila River Valley, Kofa, Parker Valley, Central La Paz County, Gila Bend and Tonopah Desert. * WHEN...From 10 AM Sunday to 8 PM MST Monday. * IMPACTS...High Heat Risk. Overexposure can cause heat cramps and heat exhaustion to develop and, without intervention, can lead to heat stroke. PRECAUTIONARY/PREPAREDNESS ACTIONS... An Excessive 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. Stay indoors and seek air-conditioned buildings. Drink water, more than usual, and avoid dehydrating alcoholic, sugary, or caffeinated drinks. Dress for the heat - lightweight and light- colored clothing. Eat small meals and eat more often. Monitor those with a higher vulnerability to heat, including small children. Check in on family, friends, and neighbors, especially the elderly. If engaging in outdoor activity, take longer and more frequent breaks and avoid the hottest parts of the day. Never leave kids or pets unattended in cars. Public cooling shelters are available in some areas. Consult county officials for more details, which may include guidance for proper social distancing measures. Recognize the signs and symptoms of heat-related illness. Early signs include thirst and muscle cramps. Heat exhaustion may include: cool, moist, pale skin; headache; dizziness; weakness or exhaustion; nausea. The most serious illness is heat stroke, which may include: vomiting; confusion; throbbing headache; decreased alertness or loss of consciousness; high body temperature (above 105F); hot, dry skin; rapid, weak pulse; rapid, shallow breathing; seizures. Heat stroke can be DEADLY. Treat as an emergency and call 9 1 1. Continue to monitor NWS forecasts, broadcast outlets, and local government for updates. && $$ AZZ532-CAZ561-565>567-569-570-120000- /O.CON.KPSR.EH.W.0008.210912T1700Z-210914T0300Z/ Yuma-Joshua Tree NP East-Imperial County Southeast- Imperial County West-Imperial Valley-Palo Verde Valley- Chuckwalla Valley- Including the cities of Yuma, Fortuna Foothills, Winterhaven, Coolidge Springs, Salton City, Winona, Coyote Wells, Plaster City, El Centro, Calexico, Alamorio, Brawley, Martinez Lake, Blythe, Palo Verde, Ripley, and Midland 115 AM MST Sat Sep 11 2021 /115 AM PDT Sat Sep 11 2021/ ...EXCESSIVE HEAT WARNING REMAINS IN EFFECT FROM 10 AM MST /10 AM PDT/ SUNDAY TO 8 PM MST /8 PM PDT/ MONDAY... * WHAT...Dangerously hot conditions. Afternoon temperatures 107 to 115 expected. * WHERE...In Arizona, Yuma. In California, Palo Verde Valley, Eastern portion of Joshua Tree National Park, Imperial Valley, Western Imperial County, Southeastern Imperial County and Chuckwalla Valley. * WHEN...From 10 AM MST /10 AM PDT/ Sunday to 8 PM MST /8 PM PDT/ Monday. * IMPACTS...High Heat Risk. Overexposure can cause heat cramps and heat exhaustion to develop and, without intervention, can lead to heat stroke. PRECAUTIONARY/PREPAREDNESS ACTIONS... An Excessive 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. Stay indoors and seek air-conditioned buildings. Drink water, more than usual, and avoid dehydrating alcoholic, sugary, or caffeinated drinks. Dress for the heat - lightweight and light- colored clothing. Eat small meals and eat more often. Monitor those with a higher vulnerability to heat, including small children. Check in on family, friends, and neighbors, especially the elderly. If engaging in outdoor activity, take longer and more frequent breaks and avoid the hottest parts of the day. Never leave kids or pets unattended in cars. Public cooling shelters are available in some areas. Consult county officials for more details, which may include guidance for proper social distancing measures. Recognize the signs and symptoms of heat-related illness. Early signs include thirst and muscle cramps. Heat exhaustion may include: cool, moist, pale skin; headache; dizziness; weakness or exhaustion; nausea. The most serious illness is heat stroke, which may include: vomiting; confusion; throbbing headache; decreased alertness or loss of consciousness; high body temperature (above 105F); hot, dry skin; rapid, weak pulse; rapid, shallow breathing; seizures. Heat stroke can be DEADLY. Treat as an emergency and call 9 1 1. Continue to monitor NWS forecasts, broadcast outlets, and local government for updates. && $$
696 WWUS75 KPSR 112034 NPWPSR URGENT - WEATHER MESSAGE National Weather Service Phoenix AZ 134 PM MST Sat Sep 11 2021 AZZ537-540>544-546-548>551-553>555-121200- /O.CON.KPSR.EH.W.0008.210912T1700Z-210914T0300Z/ Northwest Valley-Buckeye/Avondale-Cave Creek/New River- Deer Valley-Central Phoenix-North Phoenix/Glendale- Scottsdale/Paradise Valley-East Valley-Fountain Hills/East Mesa- South Mountain/Ahwatukee-Southeast Valley/Queen Creek- Northwest Pinal County-West Pinal County- Apache Junction/Gold Canyon- Including the cities of Circle City, Surprise, Wittmann, Beardsley, Sun City West, Avondale, Cashion, Goodyear, Liberty, Scottsdale, Peoria, Phoenix, Paradise Valley, Mesa, Chandler, Tempe, Gilbert, Fountain Hills, Sun Lakes, Queen Creek, Casa Grande, Florence, Coolidge, and Apache Junction 134 PM MST Sat Sep 11 2021 ...EXCESSIVE HEAT WARNING REMAINS IN EFFECT FROM 10 AM SUNDAY TO 8 PM MST MONDAY... * WHAT...Dangerously hot conditions. Afternoon temperatures 105 to 111 expected. * WHERE...Portions of south central Arizona. * WHEN...From 10 AM Sunday to 8 PM MST Monday. * IMPACTS...High Heat Risk. Overexposure can cause heat cramps and heat exhaustion to develop and, without intervention, can lead to heat stroke. PRECAUTIONARY/PREPAREDNESS ACTIONS... An Excessive 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. Stay indoors and seek air-conditioned buildings. Drink water, more than usual, and avoid dehydrating alcoholic, sugary, or caffeinated drinks. Dress for the heat - lightweight and light- colored clothing. Eat small meals and eat more often. Monitor those with a higher vulnerability to heat, including small children. Check in on family, friends, and neighbors, especially the elderly. If engaging in outdoor activity, take longer and more frequent breaks and avoid the hottest parts of the day. Never leave kids or pets unattended in cars. Public cooling shelters are available in some areas. Consult county officials for more details, which may include guidance for proper social distancing measures. Recognize the signs and symptoms of heat-related illness. Early signs include thirst and muscle cramps. Heat exhaustion may include: cool, moist, pale skin; headache; dizziness; weakness or exhaustion; nausea. The most serious illness is heat stroke, which may include: vomiting; confusion; throbbing headache; decreased alertness or loss of consciousness; high body temperature (above 105F); hot, dry skin; rapid, weak pulse; rapid, shallow breathing; seizures. Heat stroke can be DEADLY. Treat as an emergency and call 9 1 1. Continue to monitor NWS forecasts, broadcast outlets, and local government for updates. && $$ AZZ530-531-533>536-538-539-559-121200- /O.CON.KPSR.EH.W.0008.210912T1700Z-210914T0300Z/ Parker Valley-Kofa-Central La Paz-Aguila Valley- Southeast Yuma County-Gila River Valley-Tonopah Desert-Gila Bend- Sonoran Desert Natl Monument- Including the cities of Parker, Ehrenberg, Palm Canyon, Brenda, Harcuvar, Quartzsite, Vicksburg, Vicksburg Junction, Salome, Aguila, Gladden, Wickenburg, Ligurta, Arlington, Hassayampa, Tonopah, Wintersburg, Gila Bend, Sentinel, and Kaka 134 PM MST Sat Sep 11 2021 ...EXCESSIVE HEAT WARNING REMAINS IN EFFECT FROM 10 AM SUNDAY TO 8 PM MST MONDAY... * WHAT...Dangerously hot conditions. Afternoon temperatures 105 to 112 expected. * WHERE...Sonoran Desert National Monument, Southeast Yuma County, Aguila Valley, Gila River Valley, Kofa, Parker Valley, Central La Paz County, Gila Bend and Tonopah Desert. * WHEN...From 10 AM Sunday to 8 PM MST Monday. * IMPACTS...High Heat Risk. Overexposure can cause heat cramps and heat exhaustion to develop and, without intervention, can lead to heat stroke. PRECAUTIONARY/PREPAREDNESS ACTIONS... An Excessive 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. Stay indoors and seek air-conditioned buildings. Drink water, more than usual, and avoid dehydrating alcoholic, sugary, or caffeinated drinks. Dress for the heat - lightweight and light- colored clothing. Eat small meals and eat more often. Monitor those with a higher vulnerability to heat, including small children. Check in on family, friends, and neighbors, especially the elderly. If engaging in outdoor activity, take longer and more frequent breaks and avoid the hottest parts of the day. Never leave kids or pets unattended in cars. Public cooling shelters are available in some areas. Consult county officials for more details, which may include guidance for proper social distancing measures. Recognize the signs and symptoms of heat-related illness. Early signs include thirst and muscle cramps. Heat exhaustion may include: cool, moist, pale skin; headache; dizziness; weakness or exhaustion; nausea. The most serious illness is heat stroke, which may include: vomiting; confusion; throbbing headache; decreased alertness or loss of consciousness; high body temperature (above 105F); hot, dry skin; rapid, weak pulse; rapid, shallow breathing; seizures. Heat stroke can be DEADLY. Treat as an emergency and call 9 1 1. Continue to monitor NWS forecasts, broadcast outlets, and local government for updates. && $$ AZZ532-CAZ561-565>567-569-570-121200- /O.CON.KPSR.EH.W.0008.210912T1700Z-210914T0300Z/ Yuma-Joshua Tree NP East-Imperial County Southeast- Imperial County West-Imperial Valley-Palo Verde Valley- Chuckwalla Valley- Including the cities of Yuma, Fortuna Foothills, Winterhaven, Coolidge Springs, Salton City, Winona, Coyote Wells, Plaster City, El Centro, Calexico, Alamorio, Brawley, Martinez Lake, Blythe, Palo Verde, Ripley, and Midland 134 PM MST Sat Sep 11 2021 /134 PM PDT Sat Sep 11 2021/ ...EXCESSIVE HEAT WARNING REMAINS IN EFFECT FROM 10 AM MST /10 AM PDT/ SUNDAY TO 8 PM MST /8 PM PDT/ MONDAY... * WHAT...Dangerously hot conditions. Afternoon temperatures 107 to 113 expected. * WHERE...In Arizona, Yuma. In California, Palo Verde Valley, Eastern portion of Joshua Tree National Park, Imperial Valley, Western Imperial County, Southeastern Imperial County and Chuckwalla Valley. * WHEN...From 10 AM MST /10 AM PDT/ Sunday to 8 PM MST /8 PM PDT/ Monday. * IMPACTS...High Heat Risk. Overexposure can cause heat cramps and heat exhaustion to develop and, without intervention, can lead to heat stroke. PRECAUTIONARY/PREPAREDNESS ACTIONS... An Excessive 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. Stay indoors and seek air-conditioned buildings. Drink water, more than usual, and avoid dehydrating alcoholic, sugary, or caffeinated drinks. Dress for the heat - lightweight and light- colored clothing. Eat small meals and eat more often. Monitor those with a higher vulnerability to heat, including small children. Check in on family, friends, and neighbors, especially the elderly. If engaging in outdoor activity, take longer and more frequent breaks and avoid the hottest parts of the day. Never leave kids or pets unattended in cars. Public cooling shelters are available in some areas. Consult county officials for more details, which may include guidance for proper social distancing measures. Recognize the signs and symptoms of heat-related illness. Early signs include thirst and muscle cramps. Heat exhaustion may include: cool, moist, pale skin; headache; dizziness; weakness or exhaustion; nausea. The most serious illness is heat stroke, which may include: vomiting; confusion; throbbing headache; decreased alertness or loss of consciousness; high body temperature (above 105F); hot, dry skin; rapid, weak pulse; rapid, shallow breathing; seizures. Heat stroke can be DEADLY. Treat as an emergency and call 9 1 1. Continue to monitor NWS forecasts, broadcast outlets, and local government for updates. && $$
118 WWUS75 KPSR 121038 NPWPSR URGENT - WEATHER MESSAGE National Weather Service Phoenix AZ 338 AM MST Sun Sep 12 2021 AZZ537-540>544-546-548>551-553>555-130230- /O.CON.KPSR.EH.W.0008.210912T1700Z-210914T0300Z/ Northwest Valley-Buckeye/Avondale-Cave Creek/New River- Deer Valley-Central Phoenix-North Phoenix/Glendale- Scottsdale/Paradise Valley-East Valley-Fountain Hills/East Mesa- South Mountain/Ahwatukee-Southeast Valley/Queen Creek- Northwest Pinal County-West Pinal County- Apache Junction/Gold Canyon- Including the cities of Circle City, Surprise, Wittmann, Beardsley, Sun City West, Avondale, Cashion, Goodyear, Liberty, Scottsdale, Peoria, Phoenix, Paradise Valley, Mesa, Chandler, Tempe, Gilbert, Fountain Hills, Sun Lakes, Queen Creek, Casa Grande, Florence, Coolidge, and Apache Junction 338 AM MST Sun Sep 12 2021 ...EXCESSIVE HEAT WARNING REMAINS IN EFFECT FROM 10 AM THIS MORNING TO 8 PM MST MONDAY... * WHAT...Dangerously hot conditions. Afternoon temperatures 107 to 110 expected. * WHERE...Portions of south central Arizona. * WHEN...From 10 AM this morning to 8 PM MST Monday. * IMPACTS...High Heat Risk. Overexposure can cause heat cramps and heat exhaustion to develop and, without intervention, can lead to heat stroke. PRECAUTIONARY/PREPAREDNESS ACTIONS... An Excessive 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. Stay indoors and seek air-conditioned buildings. Drink water, more than usual, and avoid dehydrating alcoholic, sugary, or caffeinated drinks. Dress for the heat - lightweight and light- colored clothing. Eat small meals and eat more often. Monitor those with a higher vulnerability to heat, including small children. Check in on family, friends, and neighbors, especially the elderly. If engaging in outdoor activity, take longer and more frequent breaks and avoid the hottest parts of the day. Never leave kids or pets unattended in cars. Public cooling shelters are available in some areas. Consult county officials for more details, which may include guidance for proper social distancing measures. Recognize the signs and symptoms of heat-related illness. Early signs include thirst and muscle cramps. Heat exhaustion may include: cool, moist, pale skin; headache; dizziness; weakness or exhaustion; nausea. The most serious illness is heat stroke, which may include: vomiting; confusion; throbbing headache; decreased alertness or loss of consciousness; high body temperature (above 105F); hot, dry skin; rapid, weak pulse; rapid, shallow breathing; seizures. Heat stroke can be DEADLY. Treat as an emergency and call 9 1 1. Continue to monitor NWS forecasts, broadcast outlets, and local government for updates. && $$ AZZ530-531-533>536-538-539-559-130230- /O.CON.KPSR.EH.W.0008.210912T1700Z-210914T0300Z/ Parker Valley-Kofa-Central La Paz-Aguila Valley- Southeast Yuma County-Gila River Valley-Tonopah Desert-Gila Bend- Sonoran Desert Natl Monument- Including the cities of Parker, Ehrenberg, Palm Canyon, Brenda, Harcuvar, Quartzsite, Vicksburg, Vicksburg Junction, Salome, Aguila, Gladden, Wickenburg, Ligurta, Arlington, Hassayampa, Tonopah, Wintersburg, Gila Bend, Sentinel, and Kaka 338 AM MST Sun Sep 12 2021 ...EXCESSIVE HEAT WARNING REMAINS IN EFFECT FROM 10 AM THIS MORNING TO 8 PM MST MONDAY... * WHAT...Dangerously hot conditions. Afternoon temperatures 108 to 112 expected. * WHERE...Sonoran Desert National Monument, Southeast Yuma County, Aguila Valley, Gila River Valley, Kofa, Parker Valley, Central La Paz County, Gila Bend and Tonopah Desert. * WHEN...From 10 AM this morning to 8 PM MST Monday. * IMPACTS...High Heat Risk. Overexposure can cause heat cramps and heat exhaustion to develop and, without intervention, can lead to heat stroke. PRECAUTIONARY/PREPAREDNESS ACTIONS... An Excessive 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. Stay indoors and seek air-conditioned buildings. Drink water, more than usual, and avoid dehydrating alcoholic, sugary, or caffeinated drinks. Dress for the heat - lightweight and light- colored clothing. Eat small meals and eat more often. Monitor those with a higher vulnerability to heat, including small children. Check in on family, friends, and neighbors, especially the elderly. If engaging in outdoor activity, take longer and more frequent breaks and avoid the hottest parts of the day. Never leave kids or pets unattended in cars. Public cooling shelters are available in some areas. Consult county officials for more details, which may include guidance for proper social distancing measures. Recognize the signs and symptoms of heat-related illness. Early signs include thirst and muscle cramps. Heat exhaustion may include: cool, moist, pale skin; headache; dizziness; weakness or exhaustion; nausea. The most serious illness is heat stroke, which may include: vomiting; confusion; throbbing headache; decreased alertness or loss of consciousness; high body temperature (above 105F); hot, dry skin; rapid, weak pulse; rapid, shallow breathing; seizures. Heat stroke can be DEADLY. Treat as an emergency and call 9 1 1. Continue to monitor NWS forecasts, broadcast outlets, and local government for updates. && $$ AZZ532-CAZ561-565>567-569-570-130230- /O.CON.KPSR.EH.W.0008.210912T1700Z-210914T0300Z/ Yuma-Joshua Tree NP East-Imperial County Southeast- Imperial County West-Imperial Valley-Palo Verde Valley- Chuckwalla Valley- Including the cities of Yuma, Fortuna Foothills, Winterhaven, Coolidge Springs, Salton City, Winona, Coyote Wells, Plaster City, El Centro, Calexico, Alamorio, Brawley, Martinez Lake, Blythe, Palo Verde, Ripley, and Midland 338 AM MST Sun Sep 12 2021 /338 AM PDT Sun Sep 12 2021/ ...EXCESSIVE HEAT WARNING REMAINS IN EFFECT FROM 10 AM MST /10 AM PDT/ THIS MORNING TO 8 PM MST /8 PM PDT/ MONDAY... * WHAT...Dangerously hot conditions. Afternoon temperatures 109 to 114 expected. * WHERE...In Arizona, Yuma. In California, Palo Verde Valley, Eastern portion of Joshua Tree National Park, Imperial Valley, Western Imperial County, Southeastern Imperial County and Chuckwalla Valley. * WHEN...From 10 AM MST /10 AM PDT/ this morning to 8 PM MST /8 PM PDT/ Monday. * IMPACTS...High Heat Risk. Overexposure can cause heat cramps and heat exhaustion to develop and, without intervention, can lead to heat stroke. PRECAUTIONARY/PREPAREDNESS ACTIONS... An Excessive 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. Stay indoors and seek air-conditioned buildings. Drink water, more than usual, and avoid dehydrating alcoholic, sugary, or caffeinated drinks. Dress for the heat - lightweight and light- colored clothing. Eat small meals and eat more often. Monitor those with a higher vulnerability to heat, including small children. Check in on family, friends, and neighbors, especially the elderly. If engaging in outdoor activity, take longer and more frequent breaks and avoid the hottest parts of the day. Never leave kids or pets unattended in cars. Public cooling shelters are available in some areas. Consult county officials for more details, which may include guidance for proper social distancing measures. Recognize the signs and symptoms of heat-related illness. Early signs include thirst and muscle cramps. Heat exhaustion may include: cool, moist, pale skin; headache; dizziness; weakness or exhaustion; nausea. The most serious illness is heat stroke, which may include: vomiting; confusion; throbbing headache; decreased alertness or loss of consciousness; high body temperature (above 105F); hot, dry skin; rapid, weak pulse; rapid, shallow breathing; seizures. Heat stroke can be DEADLY. Treat as an emergency and call 9 1 1. Continue to monitor NWS forecasts, broadcast outlets, and local government for updates. && $$
729 WWUS75 KPSR 122026 NPWPSR URGENT - WEATHER MESSAGE National Weather Service Phoenix AZ 126 PM MST Sun Sep 12 2021 AZZ537-540>544-546-548>551-553>555-131200- /O.CON.KPSR.EH.W.0008.000000T0000Z-210914T0300Z/ Northwest Valley-Buckeye/Avondale-Cave Creek/New River- Deer Valley-Central Phoenix-North Phoenix/Glendale- Scottsdale/Paradise Valley-East Valley-Fountain Hills/East Mesa- South Mountain/Ahwatukee-Southeast Valley/Queen Creek- Northwest Pinal County-West Pinal County- Apache Junction/Gold Canyon- Including the cities of Circle City, Surprise, Wittmann, Beardsley, Sun City West, Avondale, Cashion, Goodyear, Liberty, Scottsdale, Peoria, Phoenix, Paradise Valley, Mesa, Chandler, Tempe, Gilbert, Fountain Hills, Sun Lakes, Queen Creek, Casa Grande, Florence, Coolidge, and Apache Junction 126 PM MST Sun Sep 12 2021 ...EXCESSIVE HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM MST MONDAY... * WHAT...Dangerously hot conditions. Afternoon temperatures 107 to 111. * WHERE...Portions of south central Arizona. * WHEN...Until 8 PM MST Monday. * IMPACTS...High Heat Risk. Overexposure can cause heat cramps and heat exhaustion to develop and, without intervention, can lead to heat stroke. PRECAUTIONARY/PREPAREDNESS ACTIONS... An Excessive 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. Stay indoors and seek air-conditioned buildings. Drink water, more than usual, and avoid dehydrating alcoholic, sugary, or caffeinated drinks. Dress for the heat - lightweight and light- colored clothing. Eat small meals and eat more often. Monitor those with a higher vulnerability to heat, including small children. Check in on family, friends, and neighbors, especially the elderly. If engaging in outdoor activity, take longer and more frequent breaks and avoid the hottest parts of the day. Never leave kids or pets unattended in cars. Public cooling shelters are available in some areas. Consult county officials for more details, which may include guidance for proper social distancing measures. Recognize the signs and symptoms of heat-related illness. Early signs include thirst and muscle cramps. Heat exhaustion may include: cool, moist, pale skin; headache; dizziness; weakness or exhaustion; nausea. The most serious illness is heat stroke, which may include: vomiting; confusion; throbbing headache; decreased alertness or loss of consciousness; high body temperature (above 105F); hot, dry skin; rapid, weak pulse; rapid, shallow breathing; seizures. Heat stroke can be DEADLY. Treat as an emergency and call 9 1 1. Continue to monitor NWS forecasts, broadcast outlets, and local government for updates. && $$ AZZ530-531-533>536-538-539-559-131200- /O.CON.KPSR.EH.W.0008.000000T0000Z-210914T0300Z/ Parker Valley-Kofa-Central La Paz-Aguila Valley- Southeast Yuma County-Gila River Valley-Tonopah Desert-Gila Bend- Sonoran Desert Natl Monument- Including the cities of Parker, Ehrenberg, Palm Canyon, Brenda, Harcuvar, Quartzsite, Vicksburg, Vicksburg Junction, Salome, Aguila, Gladden, Wickenburg, Ligurta, Arlington, Hassayampa, Tonopah, Wintersburg, Gila Bend, Sentinel, and Kaka 126 PM MST Sun Sep 12 2021 ...EXCESSIVE HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM MST MONDAY... * WHAT...Dangerously hot conditions. Afternoon temperatures 107 to 112. * WHERE...Sonoran Desert National Monument, Southeast Yuma County, Aguila Valley, Gila River Valley, Kofa, Parker Valley, Central La Paz County, Gila Bend and Tonopah Desert. * WHEN...Until 8 PM MST Monday. * IMPACTS...High Heat Risk. Overexposure can cause heat cramps and heat exhaustion to develop and, without intervention, can lead to heat stroke. PRECAUTIONARY/PREPAREDNESS ACTIONS... An Excessive 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. Stay indoors and seek air-conditioned buildings. Drink water, more than usual, and avoid dehydrating alcoholic, sugary, or caffeinated drinks. Dress for the heat - lightweight and light- colored clothing. Eat small meals and eat more often. Monitor those with a higher vulnerability to heat, including small children. Check in on family, friends, and neighbors, especially the elderly. If engaging in outdoor activity, take longer and more frequent breaks and avoid the hottest parts of the day. Never leave kids or pets unattended in cars. Public cooling shelters are available in some areas. Consult county officials for more details, which may include guidance for proper social distancing measures. Recognize the signs and symptoms of heat-related illness. Early signs include thirst and muscle cramps. Heat exhaustion may include: cool, moist, pale skin; headache; dizziness; weakness or exhaustion; nausea. The most serious illness is heat stroke, which may include: vomiting; confusion; throbbing headache; decreased alertness or loss of consciousness; high body temperature (above 105F); hot, dry skin; rapid, weak pulse; rapid, shallow breathing; seizures. Heat stroke can be DEADLY. Treat as an emergency and call 9 1 1. Continue to monitor NWS forecasts, broadcast outlets, and local government for updates. && $$ AZZ532-CAZ561-565>567-569-570-131200- /O.CON.KPSR.EH.W.0008.000000T0000Z-210914T0300Z/ Yuma-Joshua Tree NP East-Imperial County Southeast- Imperial County West-Imperial Valley-Palo Verde Valley- Chuckwalla Valley- Including the cities of Yuma, Fortuna Foothills, Winterhaven, Coolidge Springs, Salton City, Winona, Coyote Wells, Plaster City, El Centro, Calexico, Alamorio, Brawley, Martinez Lake, Blythe, Palo Verde, Ripley, and Midland 126 PM MST Sun Sep 12 2021 /126 PM PDT Sun Sep 12 2021/ ...EXCESSIVE HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM MST /8 PM PDT/ MONDAY... * WHAT...Dangerously hot conditions. Afternoon temperatures 107 to 113. * WHERE...In Arizona, Yuma. In California, Palo Verde Valley, Eastern portion of Joshua Tree National Park, Imperial Valley, Western Imperial County, Southeastern Imperial County and Chuckwalla Valley. * WHEN...Until 8 PM MST /8 PM PDT/ Monday. * IMPACTS...High Heat Risk. Overexposure can cause heat cramps and heat exhaustion to develop and, without intervention, can lead to heat stroke. PRECAUTIONARY/PREPAREDNESS ACTIONS... An Excessive 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. Stay indoors and seek air-conditioned buildings. Drink water, more than usual, and avoid dehydrating alcoholic, sugary, or caffeinated drinks. Dress for the heat - lightweight and light- colored clothing. Eat small meals and eat more often. Monitor those with a higher vulnerability to heat, including small children. Check in on family, friends, and neighbors, especially the elderly. If engaging in outdoor activity, take longer and more frequent breaks and avoid the hottest parts of the day. Never leave kids or pets unattended in cars. Public cooling shelters are available in some areas. Consult county officials for more details, which may include guidance for proper social distancing measures. Recognize the signs and symptoms of heat-related illness. Early signs include thirst and muscle cramps. Heat exhaustion may include: cool, moist, pale skin; headache; dizziness; weakness or exhaustion; nausea. The most serious illness is heat stroke, which may include: vomiting; confusion; throbbing headache; decreased alertness or loss of consciousness; high body temperature (above 105F); hot, dry skin; rapid, weak pulse; rapid, shallow breathing; seizures. Heat stroke can be DEADLY. Treat as an emergency and call 9 1 1. Continue to monitor NWS forecasts, broadcast outlets, and local government for updates. && $$
909 WWUS75 KPSR 131046 NPWPSR URGENT - WEATHER MESSAGE National Weather Service Phoenix AZ 346 AM MST Mon Sep 13 2021 AZZ537-540>544-546-548>551-553>555-140300- /O.CON.KPSR.EH.W.0008.000000T0000Z-210914T0300Z/ Northwest Valley-Buckeye/Avondale-Cave Creek/New River- Deer Valley-Central Phoenix-North Phoenix/Glendale- Scottsdale/Paradise Valley-East Valley-Fountain Hills/East Mesa- South Mountain/Ahwatukee-Southeast Valley/Queen Creek- Northwest Pinal County-West Pinal County- Apache Junction/Gold Canyon- Including the cities of Circle City, Surprise, Wittmann, Beardsley, Sun City West, Avondale, Cashion, Goodyear, Liberty, Scottsdale, Peoria, Phoenix, Paradise Valley, Mesa, Chandler, Tempe, Gilbert, Fountain Hills, Sun Lakes, Queen Creek, Casa Grande, Florence, Coolidge, and Apache Junction 346 AM MST Mon Sep 13 2021 ...EXCESSIVE HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM MST THIS EVENING... * WHAT...Dangerously hot conditions. Afternoon temperatures 107 to 110. * WHERE...Portions of south central Arizona. * WHEN...Until 8 PM MST this evening. * IMPACTS...High Heat Risk. Overexposure can cause heat cramps and heat exhaustion to develop and, without intervention, can lead to heat stroke. PRECAUTIONARY/PREPAREDNESS ACTIONS... An Excessive 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. Stay indoors and seek air-conditioned buildings. Drink water, more than usual, and avoid dehydrating alcoholic, sugary, or caffeinated drinks. Dress for the heat - lightweight and light- colored clothing. Eat small meals and eat more often. Monitor those with a higher vulnerability to heat, including small children. Check in on family, friends, and neighbors, especially the elderly. If engaging in outdoor activity, take longer and more frequent breaks and avoid the hottest parts of the day. Never leave kids or pets unattended in cars. Public cooling shelters are available in some areas. Consult county officials for more details, which may include guidance for proper social distancing measures. Recognize the signs and symptoms of heat-related illness. Early signs include thirst and muscle cramps. Heat exhaustion may include: cool, moist, pale skin; headache; dizziness; weakness or exhaustion; nausea. The most serious illness is heat stroke, which may include: vomiting; confusion; throbbing headache; decreased alertness or loss of consciousness; high body temperature (above 105F); hot, dry skin; rapid, weak pulse; rapid, shallow breathing; seizures. Heat stroke can be DEADLY. Treat as an emergency and call 9 1 1. Continue to monitor NWS forecasts, broadcast outlets, and local government for updates. && $$ AZZ530-531-533>536-538-539-559-140300- /O.CON.KPSR.EH.W.0008.000000T0000Z-210914T0300Z/ Parker Valley-Kofa-Central La Paz-Aguila Valley- Southeast Yuma County-Gila River Valley-Tonopah Desert-Gila Bend- Sonoran Desert Natl Monument- Including the cities of Parker, Ehrenberg, Palm Canyon, Brenda, Harcuvar, Quartzsite, Vicksburg, Vicksburg Junction, Salome, Aguila, Gladden, Wickenburg, Ligurta, Arlington, Hassayampa, Tonopah, Wintersburg, Gila Bend, Sentinel, and Kaka 346 AM MST Mon Sep 13 2021 ...EXCESSIVE HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM MST THIS EVENING... * WHAT...Dangerously hot conditions. Afternoon temperatures 107 to 112. * WHERE...Sonoran Desert National Monument, Southeast Yuma County, Aguila Valley, Gila River Valley, Kofa, Parker Valley, Central La Paz County, Gila Bend and Tonopah Desert. * WHEN...Until 8 PM MST this evening. * IMPACTS...High Heat Risk. Overexposure can cause heat cramps and heat exhaustion to develop and, without intervention, can lead to heat stroke. PRECAUTIONARY/PREPAREDNESS ACTIONS... An Excessive 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. Stay indoors and seek air-conditioned buildings. Drink water, more than usual, and avoid dehydrating alcoholic, sugary, or caffeinated drinks. Dress for the heat - lightweight and light- colored clothing. Eat small meals and eat more often. Monitor those with a higher vulnerability to heat, including small children. Check in on family, friends, and neighbors, especially the elderly. If engaging in outdoor activity, take longer and more frequent breaks and avoid the hottest parts of the day. Never leave kids or pets unattended in cars. Public cooling shelters are available in some areas. Consult county officials for more details, which may include guidance for proper social distancing measures. Recognize the signs and symptoms of heat-related illness. Early signs include thirst and muscle cramps. Heat exhaustion may include: cool, moist, pale skin; headache; dizziness; weakness or exhaustion; nausea. The most serious illness is heat stroke, which may include: vomiting; confusion; throbbing headache; decreased alertness or loss of consciousness; high body temperature (above 105F); hot, dry skin; rapid, weak pulse; rapid, shallow breathing; seizures. Heat stroke can be DEADLY. Treat as an emergency and call 9 1 1. Continue to monitor NWS forecasts, broadcast outlets, and local government for updates. && $$ AZZ532-CAZ561-565>567-569-570-140300- /O.CON.KPSR.EH.W.0008.000000T0000Z-210914T0300Z/ Yuma-Joshua Tree NP East-Imperial County Southeast- Imperial County West-Imperial Valley-Palo Verde Valley- Chuckwalla Valley- Including the cities of Yuma, Fortuna Foothills, Winterhaven, Coolidge Springs, Salton City, Winona, Coyote Wells, Plaster City, El Centro, Calexico, Alamorio, Brawley, Martinez Lake, Blythe, Palo Verde, Ripley, and Midland 346 AM MST Mon Sep 13 2021 /346 AM PDT Mon Sep 13 2021/ ...EXCESSIVE HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM MST /8 PM PDT/ THIS EVENING... * WHAT...Dangerously hot conditions. Afternoon temperatures 107 to 115. * WHERE...In Arizona, Yuma. In California, Palo Verde Valley, Eastern portion of Joshua Tree National Park, Imperial Valley, Western Imperial County, Southeastern Imperial County and Chuckwalla Valley. * WHEN...Until 8 PM MST /8 PM PDT/ this evening. * IMPACTS...High Heat Risk. Overexposure can cause heat cramps and heat exhaustion to develop and, without intervention, can lead to heat stroke. PRECAUTIONARY/PREPAREDNESS ACTIONS... An Excessive 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. Stay indoors and seek air-conditioned buildings. Drink water, more than usual, and avoid dehydrating alcoholic, sugary, or caffeinated drinks. Dress for the heat - lightweight and light- colored clothing. Eat small meals and eat more often. Monitor those with a higher vulnerability to heat, including small children. Check in on family, friends, and neighbors, especially the elderly. If engaging in outdoor activity, take longer and more frequent breaks and avoid the hottest parts of the day. Never leave kids or pets unattended in cars. Public cooling shelters are available in some areas. Consult county officials for more details, which may include guidance for proper social distancing measures. Recognize the signs and symptoms of heat-related illness. Early signs include thirst and muscle cramps. Heat exhaustion may include: cool, moist, pale skin; headache; dizziness; weakness or exhaustion; nausea. The most serious illness is heat stroke, which may include: vomiting; confusion; throbbing headache; decreased alertness or loss of consciousness; high body temperature (above 105F); hot, dry skin; rapid, weak pulse; rapid, shallow breathing; seizures. Heat stroke can be DEADLY. Treat as an emergency and call 9 1 1. Continue to monitor NWS forecasts, broadcast outlets, and local government for updates. && $$
What forecasters said that day
The local office's own words before this excessive heat warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Phoenix, AZ wrote its last area forecast discussion before this excessive heat warning went out at Sep 9, 10:10 PM PDT, 4 hours 9 minutes earlier.
Area forecast discussion, Sep 9, 10:10 PM PDT, 4 hours 9 minutes before
Area Forecast Discussion National Weather Service Phoenix AZ 1010 PM MST Thu Sep 9 2021 .UPDATE... Updated Aviation && .SYNOPSIS... Strong high pressure aloft will persist across the Southwestern U.S. through the weekend providing above normal temperatures for much of the region. Dry conditions will also mostly prevail, however there will be a slight chance for afternoon isolated thunderstorms across southeast California through Friday. After high temperatures up to around 110 degrees for a good portion of the lower deserts today, high temperatures through early next week will mostly range from 105 to 109 degrees across the lower deserts. && .DISCUSSION... Late season heat continues to be the main concern over the next several days as the unseasonably strong upper level ridge continues to dominate the Southwestern U.S. The center of the ridge is now positioned more over the Four Corners area with 500mb heights topping out around 596/597dm, at or near record climo for the date. 500mb heights across our area have been fairly stable the last couple days ranging from 592-594dm, or closer to 95% of climo. Enhanced boundary layer moisture resulting in surface dewpoints mostly in the 60-65 degree range has kept recent daytime highs from nearing daily records, but things are definitely different today. Drier air mixing down to the sfc has resulting in more efficient surface heating today. The high at Sky Harbor has already reached 110 degrees, which ties the record for the date. The latest NBM shows highs today ranging from 107-110 degrees across the south- central Arizona deserts to 108-112 degrees across much of southwest Arizona and southeast California. These very warm temperatures are resulting in area of High HeatRisk stretching from the Phoenix area westward through La Paz and eastern Riverside Counties. An Excessive Heat Warning remains in effect for much of the aforementioned areas for today. Lingering moisture across southeast California today along with modest CAPE and lowering CIN are allowing the development of a few thunderstorms across parts of the region, especially over/near Joshua Tree NP at this hour. Latest high-res CAMS model output indicates that the activity will likely be short-lived, dissipating/moving n-ward out of the region by early this evening as a PV anomaly rotating northward around the main upper-level high center moves out of the region. Chances across southeast California may linger into Friday, but decreasing moisture and lower instability should limit coverage even further than today. The eastward progression of the upper level ridge should push the high center into New Mexico starting tonight while also lowering heights slightly over southern California and much of Arizona. With surface dew points expected to remain stable through Saturday, the lowering heights aloft will give some slight cooling dropping highs back to between 105-108 degrees across the lower deserts for Friday and Saturday. Starting Sunday, the upper level ridge is expected to begin to flatten out, but also expand marginally higher heights back to the west over our area. Additionally on Sunday, more dry air is expected to move into the area pushing afternoon surface dew points down well into the 40s. As a result, forecast highs on Sunday kick back upward to between 108-111 degrees for much of the lower deserts. Very similar conditions are likely on Monday, but a likely incoming upper level trough through the Northwestern U.S. may further flatten the ridge and begin depressing heights over our region. Forecast highs on Monday are at or maybe a degree cooler than Sunday, so it now seems very likely that a good portion of the lower deserts will need to be covered by additional Excessive Heat products for Sunday and Monday. Upper level troughing should eventually win out across much of the Western U.S. by the middle of next week providing a gradual cooling trend for much of next week. Dry conditions should continue within this pattern with a dry west southwesterly flow very likely persisting over our region through the majority of next week. && .AVIATION...Updated at 0510Z. South-Central Arizona including KPHX, KIWA, KSDL, and KDVT: Trends in winds will be the primary forecast challenge through Friday night under mostly clear skies. Surface winds should remain E/SE through Friday morning though there is a chance a boundary of SW winds tries to encroach on KPHX late tonight. Model indicate this boundary stalling prior to reaching central Phoenix and confidence is too low to include a wind shift in this TAF package. Eventually by mid afternoon, more widespread W/SW winds will develop across the entire metro however a brief period of 8-12kt southerly cross runway winds are possible prior to the full switch. Southeast California/Southwest Arizona including KIPL and KBLH: Wind directions will primarily remain southerly with typical oscillations between SE and SW. Mostly clear skies will predominate while periods of light and variable winds are possible early Friday morning. Storms over NW Mexico may push strong outflow winds into KIPL late Friday afternoon, but confidence is too low to include stronger gusts in this TAF package. && .FIRE WEATHER... Saturday through Wednesday: Strong high pressure will dominate over the Southwestern U.S. through the weekend and likely into early next week providing dry conditions and above normal temperatures. High temperatures are expected to run several degrees above normal through much of the period with some lower desert areas likely approaching 110 degrees on Sunday and Monday. Min RH levels will range from 15-25% on Saturday with readings dropping mostly between 10-15% starting Sunday, while max RHs generally range from 30-50%. Winds will overall remain light through the period while following typical diurnal patterns. && .SPOTTER INFORMATION STATEMENT... Spotters should follow standard reporting procedures. && .PSR WATCHES/WARNINGS/ADVISORIES... AZ...None. CA...None. && DISCUSSION...Percha/Kuhlman AVIATION...18 FIRE WEATHER...Kuhlman
The office that day
Everything else NWS Phoenix, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 9, 5:14 PM PDT | Special Weather Statement | PSR | Riverside | 31 min |
| Sep 9, 5:47 PM PDT | Flash Flood Warning | PSR | Riverside | 3 hr |
| Sep 9, 5:52 PM PDT | Special Weather Statement | PSR | Riverside | 23 min |
| Sep 10, 4:03 PM PDT | Severe Thunderstorm Warning | PSR | Imperial | 42 min |
| Sep 10, 4:22 PM PDT | Flash Flood Warning | PSR | Imperial | 5 hr |
| Sep 9, 5:22 PM PDT | Special Weather Statement | PSR | 23 min | |
| Sep 10, 3:09 PM PDT | Special Weather Statement | PSR | La Paz | 81 min |
| Sep 10, 3:23 PM PDT | Areal Flood Advisory | PSR | La Paz | 6 hr |
| Sep 10, 3:56 PM PDT | Special Weather Statement | PSR | 79 min |
Nearby
Excessive Heat Warnings in Arizona, 2021Excessive Heat Warnings in California, 2021Every excessive heat warning in 2021
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.