Alert archive / California / Excessive Heat Warnings in 2021
Excessive Heat Warning 7, NWS Phoenix, AZ
NWS Phoenix, AZ issued this excessive heat warning at Sep 6, 2021, 12:12 PM MST for La Paz County, Maricopa County, Arizona; Imperial County, Riverside County, San Bernardino County, California. It took effect at Sep 7, 2021, 10:00 AM MST. It was in force for 58 hr. 13 reports came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Sep 6, 2021, 12:12 PM MST (19:12 UTC)
- In effect from
- Sep 7, 2021, 10:00 AM MST
- Expired
- Sep 9, 2021, 8:00 PM MST
- In force
- 58 hr
- Issued by
- NWS Phoenix, AZ
Counties La Paz County, AZ, Maricopa County, AZ, Imperial County, CA, Riverside County, CA, San Bernardino County, CA
The radar
The Yuma radar (KYUX), 139 km from the middle of the area, began a volume at 19:13 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Sep 9, 12:45 PM MST | TSTM WND GST 39 | 2 E Adelanto, CA | AWOS STATION KVCV VICTORVILLE AIRPORT. THUNDERSTORM TO THE EAST. |
| Sep 9, 1:26 PM MST | TSTM WND GST 46 | 20 Ene Big Bear City, CA | MESONET STATION MNLC1 MEANS LAKE. THUNDERSTORM WIND OUTFLOW. TEMPERATURE WENT FROM 98 TO 77F. |
| Sep 9, 2:17 PM MST | DEBRIS FLOW | 5 W Big Bear Lake, CA | CHP CALTRANS REPORTING ROCKS SLIDING ONTO HIGHWAY 18 ARCTIC CIRCLE DUE TO THUNDERSTORMS CURRENTLY THERE. THIS IS LOCATED NEAR THE SHARP WINDING PORTION OF THE HIGHWAY. |
| Sep 9, 2:21 PM MST | TSTM WND GST 46 | 11 Ese Jtnp-Lost Horse, CA | WILSON CANYON RAWS IN JOSHUA TREE NATIONAL PARK. TIME ESTIMATED FROM RADAR. |
| Sep 9, 2:26 PM MST | HEAVY RAIN 0.38 | 20 Ene Big Bear City, CA | MESONET STATION MNLC1 MEANS LAKE IN DESERT DRY BED. |
| Sep 9, 3:15 PM MST | DEBRIS FLOW | 5 W Big Bear Lake, CA | CHP CLOSURE ON HIGHWAY 18. RADAR RAINFALL OF 1 TO 2 INCHES IN 1 HOUR ON THE STEEP SLOPES AT THE WINDY PORTION OF ARCTIC CIRCLE HIGHWAY 18. ROCK SLIDES REPORTED ONTO HIGHWAY. |
| Sep 9, 3:15 PM MST | DEBRIS FLOW | 5 W Big Bear Lake, CA | CORRECTS PREVIOUS DEBRIS FLOW REPORT FROM 5 W BIG BEAR LAKE. CHP CLOSURE ON HIGHWAY 18. RADAR RAINFALL OF 1 TO 2 INCHES IN 1 HOUR ON THE STEEP SLOPES AT THE WINDING PORTION OF ARCTIC CIRCLE HIGHWAY 18. ROCK SLIDES REPORTED ONTO HIGHWAY. |
| Sep 9, 3:16 PM MST | LIGHTNING | 1 Ssw Mentone, CA | TREE ON FIRE AFTER BEING STRUCK BY LIGHTNING. |
| Sep 9, 3:20 PM MST | TSTM WND GST 50 | 3 Sw Calimesa, CA | MESONET STATION 095SE CALIMESA (095SE) FROM CURRENT THUNDERSTORM WIND. |
| Sep 9, 3:20 PM MST | NON-TSTM WND GST 65 | 2 Ssw Calimesa, CA | MESONET STATION SOCAL EDISON SCE038 CALIMESA (038SE) FROM THUNDERSTORM WIND. ON ROBERTS ROAD. |
| Sep 9, 3:30 PM MST | TSTM WND GST 45 | 4 Wnw Calimesa, CA | MESONET STATION 155 SOCAL EDISON YUCAIPA CREEK FROM THUNDERSTORM WIND. |
| Sep 9, 4:58 PM MST | FLOOD | 1 E Banning, CA | FLOODING REPORTED RAMSEY ST ON RAMP AND I-10 EAST. |
| Sep 9, 5:00 PM MST | HEAVY RAIN 1.1 | 3 Ne Mt San Jacinto, CA | LOWER SNOW CREEK RECEIVED 1.10 INCHES IN 1 HOUR AND 0.39 INCHES IN 15 MINUTES FROM THUNDERSTORM. RIVERSIDE COUNTY FLOOD CONTROL. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
San Diego, CA (KNKX), launched 12:00Z, 7.2 hours before the alert went out and 246 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1536 m above ground
- 0-6 km bulk shear
- 29 kt
- 0-1 km storm-relative helicity
- 39 m²/s²
- 0-3 km storm-relative helicity
- 61 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
813 WWUS75 KPSR 061912 NPWPSR URGENT - WEATHER MESSAGE National Weather Service Phoenix AZ 1212 PM MST Mon Sep 6 2021 CAZ561-570-071200- /O.NEW.KPSR.EH.W.0007.210907T1700Z-210909T0300Z/ Joshua Tree NP East-Chuckwalla Valley- Including the city of Midland 1212 PM PDT Mon Sep 6 2021 ...EXCESSIVE HEAT WARNING IN EFFECT FROM 10 AM TUESDAY TO 8 PM PDT WEDNESDAY... * WHAT...Dangerously hot conditions. Afternoon temperatures 105 to 115 expected. * WHERE...Eastern portion of Joshua Tree National Park and Chuckwalla Valley. * WHEN...From 10 AM Tuesday to 8 PM PDT Wednesday. * 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. && $$
8 follow-up statements
802 WWUS75 KPSR 070817 NPWPSR URGENT - WEATHER MESSAGE National Weather Service Phoenix AZ 117 AM MST Tue Sep 7 2021 CAZ561-570-072300- /O.CON.KPSR.EH.W.0007.210907T1700Z-210909T0300Z/ Joshua Tree NP East-Chuckwalla Valley- Including the city of Midland 117 AM PDT Tue Sep 7 2021 ...EXCESSIVE HEAT WARNING REMAINS IN EFFECT FROM 10 AM THIS MORNING TO 8 PM PDT WEDNESDAY... * WHAT...Dangerously hot conditions. Afternoon temperatures 105 to 115 expected. * WHERE...Eastern portion of Joshua Tree National Park and Chuckwalla Valley. * WHEN...From 10 AM this morning to 8 PM PDT Wednesday. * 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. && $$
419 WWUS75 KPSR 072028 NPWPSR URGENT - WEATHER MESSAGE National Weather Service Phoenix AZ 128 PM MST Tue Sep 7 2021 CAZ561-570-081200- /O.EXT.KPSR.EH.W.0007.000000T0000Z-210910T0300Z/ Joshua Tree NP East-Chuckwalla Valley- Including the city of Midland 128 PM PDT Tue Sep 7 2021 ...EXCESSIVE HEAT WARNING NOW IN EFFECT UNTIL 8 PM PDT THURSDAY... * WHAT...Dangerously hot conditions. Afternoon temperatures 104 to 114. * WHERE...Eastern portion of Joshua Tree National Park and Chuckwalla Valley. * WHEN...Until 8 PM PDT Thursday. * 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. && $$ AZZ537-540>544-546-548>551-081200- /O.NEW.KPSR.EH.A.0006.210909T1700Z-210910T0300Z/ 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- 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, and Queen Creek 128 PM MST Tue Sep 7 2021 ...EXCESSIVE HEAT WATCH IN EFFECT FROM THURSDAY MORNING THROUGH THURSDAY EVENING... * WHAT...Dangerously hot conditions possible. Afternoon temperatures 105 to 109. * WHERE...Portions of south central Arizona. * WHEN...From Thursday morning through Thursday 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 Watch 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. && $$
911 WWUS75 KPSR 080849 NPWPSR URGENT - WEATHER MESSAGE National Weather Service Phoenix AZ 149 AM MST Wed Sep 8 2021 CAZ561-570-082300- /O.CON.KPSR.EH.W.0007.000000T0000Z-210910T0300Z/ Joshua Tree NP East-Chuckwalla Valley- Including the city of Midland 149 AM PDT Wed Sep 8 2021 ...EXCESSIVE HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM PDT THURSDAY... * WHAT...Dangerously hot conditions. Afternoon temperatures 104 to 114. * WHERE...Eastern portion of Joshua Tree National Park and Chuckwalla Valley. * WHEN...Until 8 PM PDT Thursday. * 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. && $$ AZZ537-540>544-546-548>551-082300- /O.CON.KPSR.EH.A.0006.210909T1700Z-210910T0300Z/ 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- 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, and Queen Creek 149 AM MST Wed Sep 8 2021 ...EXCESSIVE HEAT WATCH REMAINS IN EFFECT FROM THURSDAY MORNING THROUGH THURSDAY EVENING... * WHAT...Dangerously hot conditions possible. Afternoon temperatures 106 to 109. * WHERE...Portions of south central Arizona. * WHEN...From Thursday morning through Thursday 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 Watch 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. && $$
276 WWUS75 KPSR 081937 NPWPSR URGENT - WEATHER MESSAGE National Weather Service Phoenix AZ 1237 PM MST Wed Sep 8 2021 AZZ537-540>544-546-548>551-090745- /O.UPG.KPSR.EH.A.0006.210909T1700Z-210910T0300Z/ /O.EXB.KPSR.EH.W.0007.210909T1700Z-210910T0300Z/ 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- 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, and Queen Creek 1237 PM MST Wed Sep 8 2021 ...EXCESSIVE HEAT WARNING IN EFFECT FROM 10 AM TO 8 PM MST THURSDAY... * WHAT...Dangerously hot conditions. Afternoon temperatures 106 to 109 expected. * WHERE...Portions of south central Arizona. * WHEN...From 10 AM to 8 PM MST Thursday. * 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. && $$ CAZ561-570-090745- /O.CON.KPSR.EH.W.0007.000000T0000Z-210910T0300Z/ Joshua Tree NP East-Chuckwalla Valley- Including the city of Midland 1237 PM PDT Wed Sep 8 2021 ...EXCESSIVE HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM PDT THURSDAY... * WHAT...Dangerously hot conditions. Afternoon temperatures 104 to 114. * WHERE...Eastern portion of Joshua Tree National Park and Chuckwalla Valley. * WHEN...Until 8 PM PDT Thursday. * 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. && $$
184 WWUS75 KPSR 090454 NPWPSR URGENT - WEATHER MESSAGE National Weather Service Phoenix AZ 954 PM MST Wed Sep 8 2021 CAZ561-570-092200- /O.CON.KPSR.EH.W.0007.000000T0000Z-210910T0300Z/ Joshua Tree NP East-Chuckwalla Valley- Including the city of Midland 954 PM PDT Wed Sep 8 2021 ...EXCESSIVE HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM PDT THURSDAY... * WHAT...Dangerously hot conditions. Afternoon temperatures 104 to 112 degrees. * WHERE...Eastern portion of Joshua Tree National Park and Chuckwalla Valley. * WHEN...Until 8 PM PDT Thursday. * 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. && $$ AZZ537-540>544-546-548>551-092200- /O.CON.KPSR.EH.W.0007.210909T1700Z-210910T0300Z/ 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- 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, and Queen Creek 954 PM MST Wed Sep 8 2021 ...EXCESSIVE HEAT WARNING REMAINS IN EFFECT FROM 10 AM TO 8 PM MST THURSDAY... * WHAT...Dangerously hot conditions. Afternoon temperatures 105 to 110 degrees. * WHERE...Portions of south central Arizona. * WHEN...From 10 AM to 8 PM MST Thursday. * 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. && $$
207 WWUS75 KPSR 090828 NPWPSR URGENT - WEATHER MESSAGE National Weather Service Phoenix AZ 128 AM MST Thu Sep 9 2021 AZZ530-533-538-CAZ569-100300- /O.EXA.KPSR.EH.W.0007.210909T1700Z-210910T0300Z/ Parker Valley-Central La Paz-Tonopah Desert-Palo Verde Valley- Including the cities of Parker, Ehrenberg, Brenda, Harcuvar, Quartzsite, Vicksburg, Vicksburg Junction, Salome, Arlington, Hassayampa, Tonopah, Wintersburg, Blythe, Palo Verde, and Ripley 128 AM MST Thu Sep 9 2021 /128 AM PDT Thu Sep 9 2021/ ...EXCESSIVE HEAT WARNING IN EFFECT FROM 10 AM MST /10 AM PDT/ THIS MORNING TO 8 PM MST /8 PM PDT/ THIS EVENING... * WHAT...Dangerously hot conditions. Afternoon temperatures 108 to 112 expected. * WHERE...In Arizona, Parker Valley, Central La Paz County and Tonopah Desert. In California, Palo Verde Valley. * WHEN...From 10 AM MST /10 AM PDT/ this morning to 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. && $$ CAZ561-570-100300- /O.CON.KPSR.EH.W.0007.000000T0000Z-210910T0300Z/ Joshua Tree NP East-Chuckwalla Valley- Including the city of Midland 128 AM PDT Thu Sep 9 2021 ...EXCESSIVE HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM PDT THIS EVENING... * WHAT...Dangerously hot conditions. Afternoon temperatures 104 to 115. * WHERE...Eastern portion of Joshua Tree National Park and Chuckwalla Valley. * WHEN...Until 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. && $$ AZZ537-540>544-546-548>551-100300- /O.CON.KPSR.EH.W.0007.210909T1700Z-210910T0300Z/ 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- 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, and Queen Creek 128 AM MST Thu Sep 9 2021 ...EXCESSIVE HEAT WARNING REMAINS IN EFFECT FROM 10 AM THIS MORNING TO 8 PM MST THIS EVENING... * 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 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. && $$
671 WWUS75 KPSR 091950 NPWPSR URGENT - WEATHER MESSAGE National Weather Service Phoenix AZ 1250 PM MST Thu Sep 9 2021 CAZ561-570-100300- /O.CON.KPSR.EH.W.0007.000000T0000Z-210910T0300Z/ Joshua Tree NP East-Chuckwalla Valley- Including the city of Midland 1250 PM PDT Thu Sep 9 2021 ...EXCESSIVE HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM PDT THIS EVENING... * WHAT...Dangerously hot conditions. Afternoon temperatures 104 to 115. * WHERE...Eastern portion of Joshua Tree National Park and Chuckwalla Valley. * WHEN...Until 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. && $$ AZZ530-533-538-CAZ569-100300- /O.CON.KPSR.EH.W.0007.000000T0000Z-210910T0300Z/ Parker Valley-Central La Paz-Tonopah Desert-Palo Verde Valley- Including the cities of Parker, Ehrenberg, Brenda, Harcuvar, Quartzsite, Vicksburg, Vicksburg Junction, Salome, Arlington, Hassayampa, Tonopah, Wintersburg, Martinez Lake, Blythe, Palo Verde, and Ripley 1250 PM MST Thu Sep 9 2021 /1250 PM PDT Thu Sep 9 2021/ ...EXCESSIVE HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM MST /8 PM PDT/ THIS EVENING... * WHAT...Dangerously hot conditions. Afternoon temperatures 108 to 112 expected. * WHERE...In Arizona, Parker Valley, Central La Paz County and Tonopah Desert. In California, Palo Verde Valley. * WHEN...From 10 AM MST /10 AM PDT/ this morning to 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. && $$ AZZ537-540>544-546-548>551-100300- /O.CON.KPSR.EH.W.0007.000000T0000Z-210910T0300Z/ 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- 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, and Queen Creek 1250 PM MST Thu Sep 9 2021 ...EXCESSIVE HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM MST THIS EVENING... * 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 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. && $$
465 WWUS75 KPSR 100257 NPWPSR URGENT - WEATHER MESSAGE National Weather Service Phoenix AZ 757 PM MST Thu Sep 9 2021 CAZ561-570-100400- /O.EXP.KPSR.EH.W.0007.000000T0000Z-210910T0300Z/ Joshua Tree NP East-Chuckwalla Valley- Including the city of Midland 757 PM PDT Thu Sep 9 2021 ...EXCESSIVE HEAT WARNING WILL EXPIRE AT 8 PM PDT THIS EVENING... $$ AZZ530-533-538-CAZ569-100400- /O.EXP.KPSR.EH.W.0007.000000T0000Z-210910T0300Z/ Parker Valley-Central La Paz-Tonopah Desert-Palo Verde Valley- Including the cities of Parker, Ehrenberg, Brenda, Harcuvar, Quartzsite, Vicksburg, Vicksburg Junction, Salome, Arlington, Hassayampa, Tonopah, Wintersburg, Blythe, Palo Verde, and Ripley 757 PM MST Thu Sep 9 2021 /757 PM PDT Thu Sep 9 2021/ ...EXCESSIVE HEAT WARNING WILL EXPIRE AT 8 PM MST /8 PM PDT/ THIS EVENING... $$ AZZ537-540>544-546-548>551-100400- /O.EXP.KPSR.EH.W.0007.000000T0000Z-210910T0300Z/ 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- 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, and Queen Creek 757 PM MST Thu Sep 9 2021 ...EXCESSIVE HEAT WARNING WILL EXPIRE AT 8 PM MST THIS EVENING... $$
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 6, 10:33 AM MST, 1 hour 39 minutes earlier.
Area forecast discussion, Sep 6, 10:33 AM MST, 1 hour 39 minutes before
Area Forecast Discussion National Weather Service Phoenix AZ 1033 AM MST Mon Sep 6 2021 .UPDATE... Updated 18Z aviation discussion. && .SYNOPSIS... Strong high pressure aloft will be the dominant weather feature across the Southwestern U.S. this week providing above normal temperatures for much of the region. Generally dry conditions will also prevail despite somewhat higher humidity levels, though slight chances for storms may become possible later this week across southeast California and the Arizona high country. Daily high temperatures will mostly range from 105 to 108 degrees across the Arizona lower deserts to a couple degrees warmer across southeast California and southwest Arizona. && .DISCUSSION... An anomalously strong upper level high pressure ridge currently centered over central California into western Nevada will continue to be the dominant weather feature across our region this week as it slowly drifts eastward. Upper level heights throughout the Great Basin, into much of California and northwestern Arizona are forecast to be near record climo for the first half of this week. 500mb heights for southern Arizona and southern California will be a bit lower, but still mostly in a 592-595dm range and nearing 99% of climo. For today, the morning hours will feel a bit sticky due to a strong Gulf of California moisture surge and dew points back into the 60s and even 70s closer to Yuma. However, because of the increased boundary layer moisture, high temperatures today will likely fall back to near normal. These briefly lower high temperatures will likely end by Tuesday or at the latest Wednesday as we gradually lose some of the moisture and forecast highs creep back upward, possibly reaching 110 degrees across the western deserts. Strong subsidence aloft will keep a lid on convection through Tuesday with only very minimal chances (5-10%) for an isolated storm across eastern Gila County. The main forecast concern for this week will be the potential for localized areas of High HeatRisk, particularly during the latter half of the week when the NBM deterministic forecast highs reach into a 105-107 degree range for the Arizona lower deserts to as high as 110 degrees across southeast California. However, looking at the NBM 75th percentile boosts highs to around 109 degrees for Phoenix later this week to 110-112 degrees in southeast California. Boundary layer moisture and what the daytime surface dew points end up being will likely determine how warm high temperatures will get this week. Starting Wednesday, the NBM shows daily probabilities any where from 10-20% of tying record highs in Phoenix. Model ensembles have definitely shifted more toward the upper level ridge being dominant this week and almost certainly keeping any significant tropical moisture south and west of our area. There may a slight chance of some isolated storms later this week across the western deserts and the Arizona high country, but NBM PoPs are mostly below 15%. Even lower chances are expected across the south-central Arizona deserts into eastern Arizona where very limited moisture and stronger subsidence is likely to be in place. Later this week, the high pressure ridge is expected to stall out somewhere across the eastern portion of our region, likely keeping our weather mostly dry and hot through the upcoming weekend. && .AVIATION...Updated at 1733Z South-Central Arizona including KPHX, KIWA, KSDL, and KDVT; Southeast California/Southwest Arizona including KIPL and KBLH: No major aviation impacts are expected through the TAF period as clear skies and relatively light winds prevail. Light southerly crosswinds at the Phoenix terminals will veer to westerly at 5-10 knots this afternoon between 20-21Z, but confidence on the exact timing is currently low. A Gulf surge will reinforce westerly flow this evening into the overnight hours across the entire region, possibly causing 15-20 knot gusts for a few hours. Westerly winds to prevail all night/through Tuesday morning at all terminals, except for light southeasterly for a brief period at KIWA early Tuesday. Unlike yesterday, outflows from storms in SE Arizona have less than a 10% chance of impacting the Phoenix metro. Winds will persist out of the southeast at KIPL and south at KBLH at around 10 knots through the TAF period, with only brief gusts above 15 knots this afternoon. && .FIRE WEATHER... Wednesday through Sunday: Strong high pressure will dominate over the Great Basin into the Desert Southwest late this week into the weekend providing generally dry conditions and above normal temperatures. Chances for showers and thunderstorms will be very limited through the period, especially over the Arizona lower deserts where chances will be less than 5%. High temperatures are likely to run a few degrees above normal throughout the period with some lower desert areas potentially seeing a return of 110 degree readings. Min RH levels will mostly range from 15-25% through the forecast period, while max RHs generally range from 40-60% (locally higher). Apart from thunderstorms, strong wind events are not anticipated. && .SPOTTER INFORMATION STATEMENT... Spotters should follow standard reporting procedures. && .PSR WATCHES/WARNINGS/ADVISORIES... AZ...None. CA...None. && DISCUSSION...Kuhlman AVIATION...Percha/Hopper FIRE WEATHER...Kuhlman
The office that day
Everything else NWS Phoenix, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 5, 5:04 PM MST | Severe Thunderstorm Warning | PSR | Gila, Pinal | 41 min |
| Sep 5, 5:36 PM MST | Flash Flood Warning | PSR | Gila | 4 hr |
| Sep 5, 5:43 PM MST | Dust Storm Advisory | PSR | Maricopa, Pinal | 89 min |
Nearby
Excessive Heat Warnings in California, 2021Excessive Heat Warnings in Arizona, 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.