Alert archive / Arizona / Excessive Heat Warnings in 2021
Excessive Heat Warning 2, NWS Tucson, AZ
NWS Tucson, AZ issued this excessive heat warning at Aug 2, 2021, 2:26 PM MST for 4 counties in Arizona. It took effect at Aug 3, 2021, 10:00 AM MST. 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
- Aug 2, 2021, 2:26 PM MST (21:26 UTC)
- In effect from
- Aug 3, 2021, 10:00 AM MST
- Expired
- Aug 4, 2021, 8:00 PM MST
- In force
- 34 hr
- Issued by
- NWS Tucson, AZ
Counties Graham County, AZ, Greenlee County, AZ, Pima County, AZ, Pinal County, AZ
The radar
The Tucson radar (KEMX), 100 km from the middle of the area, began a volume at 21:28 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
Tuscon, AZ (KTUS), launched 12:00Z, 9.4 hours before the alert went out and 75 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
- 719 J/kg
- Mixed-layer CIN
- -138 J/kg
- Mixed-layer LCL
- 2053 m above ground
- 0-6 km bulk shear
- 16 kt
- 0-1 km storm-relative helicity
- 23 m²/s²
- 0-3 km storm-relative helicity
- 14 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
692 WWUS75 KTWC 022126 NPWTWC URGENT - WEATHER MESSAGE National Weather Service Tucson AZ 226 PM MST Mon Aug 2 2021 AZZ501-502-505-030600- /O.NEW.KTWC.EH.W.0002.210803T1700Z-210805T0300Z/ Western Pima County-Tohono O'odham Nation- South Central Pinal County- Including the cities of Ajo, Organ Pipe Cactus N.M., Sells, and Picacho Peak State Park 226 PM MST Mon Aug 2 2021 ...EXCESSIVE HEAT WARNING IN EFFECT FROM 10 AM TUESDAY TO 8 PM MST WEDNESDAY... * WHAT...Dangerously hot conditions with afternoon temperatures peaking around 107 to 112 degrees. * WHERE...Western Pima County, Tohono O'odham Nation and South Central Pinal County. * WHEN...From 10 AM Tuesday to 8 PM MST Wednesday. * IMPACTS...Extreme heat and humidity will significantly increase the potential for heat related illnesses, particularly for those working or participating in outdoor activities. PRECAUTIONARY/PREPAREDNESS ACTIONS... Keep in mind you may need to adjust your plans based on the latest health and safety guidelines from CDC and your local officials. Cooling shelters may need to take your temperature or ask questions about how you are feeling. Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Young children and pets should never be left unattended in vehicles under any circumstances. Take extra precautions if you work or spend time outside. When possible reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose fitting clothing when possible. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. && $$ Visit us on Facebook...Twitter...YouTube...and at weather.gov/Tucson
6 follow-up statements
169 WWUS75 KTWC 030552 NPWTWC URGENT - WEATHER MESSAGE National Weather Service Tucson AZ 1052 PM MST Mon Aug 2 2021 AZZ501-502-505-032300- /O.CON.KTWC.EH.W.0002.210803T1700Z-210805T0300Z/ Western Pima County-Tohono O'odham Nation- South Central Pinal County- Including the cities of Ajo, Organ Pipe Cactus N.M., Sells, and Picacho Peak State Park 1052 PM MST Mon Aug 2 2021 ...EXCESSIVE HEAT WARNING REMAINS IN EFFECT FROM 10 AM TUESDAY TO 8 PM MST WEDNESDAY... * WHAT...Dangerously hot conditions with afternoon temperatures peaking around 107 to 112 degrees. * WHERE...Western Pima County, Tohono O'odham Nation and South Central Pinal County. * WHEN...From 10 AM Tuesday to 8 PM MST Wednesday. * IMPACTS...Extreme heat and humidity will significantly increase the potential for heat related illnesses, particularly for those working or participating in outdoor activities. PRECAUTIONARY/PREPAREDNESS ACTIONS... Keep in mind you may need to adjust your plans based on the latest health and safety guidelines from CDC and your local officials. Cooling shelters may need to take your temperature or ask questions about how you are feeling. Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Young children and pets should never be left unattended in vehicles under any circumstances. Take extra precautions if you work or spend time outside. When possible reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose fitting clothing when possible. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. && $$ Visit us on Facebook...Twitter...YouTube...and at weather.gov/Tucson
057 WWUS75 KTWC 031106 NPWTWC URGENT - WEATHER MESSAGE National Weather Service Tucson AZ 406 AM MST Tue Aug 3 2021 AZZ504-506-509-032300- /O.EXB.KTWC.EH.W.0002.210804T1800Z-210805T0300Z/ Tucson Metro Area-Southeast Pinal County-Upper Gila River Valley- Including the cities of Tucson, Green Valley, Marana, Vail, Mammoth, Oracle, and Safford 406 AM MST Tue Aug 3 2021 ...EXCESSIVE HEAT WARNING IN EFFECT FROM 11 AM TO 8 PM MST WEDNESDAY... * WHAT...Dangerously hot conditions with afternoon temperatures peaking around 105 to 110 degrees. * WHERE...Tucson Metro Area, Southeast Pinal County and Upper Gila River Valley. * WHEN...From 11 AM to 8 PM MST Wednesday. * IMPACTS...Extreme heat and humidity will significantly increase the potential for heat related illnesses, particularly for those working or participating in outdoor activities. PRECAUTIONARY/PREPAREDNESS ACTIONS... Keep in mind you may need to adjust your plans based on the latest health and safety guidelines from CDC and your local officials. Cooling shelters may need to take your temperature or ask questions about how you are feeling. Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Young children and pets should never be left unattended in vehicles under any circumstances. Take extra precautions if you work or spend time outside. When possible reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose fitting clothing when possible. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. && $$ AZZ501-502-505-032300- /O.CON.KTWC.EH.W.0002.210803T1700Z-210805T0300Z/ Western Pima County-Tohono O'odham Nation- South Central Pinal County- Including the cities of Ajo, Organ Pipe Cactus N.M., Sells, and Picacho Peak State Park 406 AM MST Tue Aug 3 2021 ...EXCESSIVE HEAT WARNING REMAINS IN EFFECT FROM 10 AM THIS MORNING TO 8 PM MST WEDNESDAY... * WHAT...Dangerously hot conditions with afternoon temperatures peaking around 107 to 112 degrees. * WHERE...Western Pima County, Tohono O'odham Nation and South Central Pinal County. * WHEN...From 10 AM Tuesday to 8 PM MST Wednesday. * IMPACTS...Extreme heat and humidity will significantly increase the potential for heat related illnesses, particularly for those working or participating in outdoor activities. PRECAUTIONARY/PREPAREDNESS ACTIONS... Keep in mind you may need to adjust your plans based on the latest health and safety guidelines from CDC and your local officials. Cooling shelters may need to take your temperature or ask questions about how you are feeling. Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Young children and pets should never be left unattended in vehicles under any circumstances. Take extra precautions if you work or spend time outside. When possible reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose fitting clothing when possible. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. && $$ Visit us on Facebook...Twitter...YouTube...and at weather.gov/Tucson
478 WWUS75 KTWC 031836 NPWTWC URGENT - WEATHER MESSAGE National Weather Service Tucson AZ 1136 AM MST Tue Aug 3 2021 AZZ501-502-505-041200- /O.CON.KTWC.EH.W.0002.000000T0000Z-210805T0300Z/ Western Pima County-Tohono O'odham Nation- South Central Pinal County- Including the cities of Ajo, Organ Pipe Cactus N.M., Sells, and Picacho Peak State Park 1136 AM MST Tue Aug 3 2021 ...EXCESSIVE HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM MST WEDNESDAY... * WHAT...Dangerously hot conditions with afternoon temperatures peaking around 106 to 114 degrees. * WHERE...Western Pima County, Tohono O'odham Nation and South Central Pinal County. * WHEN...Through 8 PM MST Wednesday. * IMPACTS...Extreme heat and humidity will significantly increase the potential for heat related illnesses, particularly for those working or participating in outdoor activities. PRECAUTIONARY/PREPAREDNESS ACTIONS... Keep in mind you may need to adjust your plans based on the latest health and safety guidelines from CDC and your local officials. Cooling shelters may need to take your temperature or ask questions about how you are feeling. Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Young children and pets should never be left unattended in vehicles under any circumstances. Take extra precautions if you work or spend time outside. When possible reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose fitting clothing when possible. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. && $$ AZZ504-506-509-041200- /O.CON.KTWC.EH.W.0002.210804T1800Z-210805T0300Z/ Tucson Metro Area-Southeast Pinal County-Upper Gila River Valley- Including the cities of Tucson, Green Valley, Marana, Vail, Mammoth, Oracle, and Safford 1136 AM MST Tue Aug 3 2021 ...EXCESSIVE HEAT WARNING REMAINS IN EFFECT FROM 11 AM TO 8 PM MST WEDNESDAY... * WHAT...Dangerously hot conditions with afternoon temperatures peaking around 105 to 110 degrees. * WHERE...Tucson Metro Area, Southeast Pinal County and Upper Gila River Valley. * WHEN...From 11 AM to 8 PM MST Wednesday. * IMPACTS...Extreme heat and humidity will significantly increase the potential for heat related illnesses, particularly for those working or participating in outdoor activities. PRECAUTIONARY/PREPAREDNESS ACTIONS... Keep in mind you may need to adjust your plans based on the latest health and safety guidelines from CDC and your local officials. Cooling shelters may need to take your temperature or ask questions about how you are feeling. Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Young children and pets should never be left unattended in vehicles under any circumstances. Take extra precautions if you work or spend time outside. When possible reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose fitting clothing when possible. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. && $$ Visit us on Facebook...Twitter...YouTube...and at weather.gov/Tucson
840 WWUS75 KTWC 041000 NPWTWC URGENT - WEATHER MESSAGE National Weather Service Tucson AZ 300 AM MST Wed Aug 4 2021 AZZ501-502-505-050300- /O.CON.KTWC.EH.W.0002.000000T0000Z-210805T0300Z/ Western Pima County-Tohono O'odham Nation- South Central Pinal County- Including the cities of Ajo, Organ Pipe Cactus N.M., Sells, and Picacho Peak State Park 300 AM MST Wed Aug 4 2021 ...EXCESSIVE HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM MST THIS EVENING... * WHAT...Dangerously hot conditions with afternoon temperatures peaking around 106 to 114 degrees. * WHERE...Western Pima County, Tohono O'odham Nation and South Central Pinal County. * WHEN...Through 8 PM MST Wednesday. * IMPACTS...Extreme heat and humidity will significantly increase the potential for heat related illnesses, particularly for those working or participating in outdoor activities. PRECAUTIONARY/PREPAREDNESS ACTIONS... Keep in mind you may need to adjust your plans based on the latest health and safety guidelines from CDC and your local officials. Cooling shelters may need to take your temperature or ask questions about how you are feeling. Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Young children and pets should never be left unattended in vehicles under any circumstances. Take extra precautions if you work or spend time outside. When possible reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose fitting clothing when possible. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. && $$ AZZ504-506-509-050300- /O.CON.KTWC.EH.W.0002.210804T1800Z-210805T0300Z/ Tucson Metro Area-Southeast Pinal County-Upper Gila River Valley- Including the cities of Tucson, Green Valley, Marana, Vail, Mammoth, Oracle, and Safford 300 AM MST Wed Aug 4 2021 ...EXCESSIVE HEAT WARNING REMAINS IN EFFECT FROM 11 AM THIS MORNING TO 8 PM MST THIS EVENING... * WHAT...Dangerously hot conditions with afternoon temperatures peaking around 105 to 110 degrees. * WHERE...Tucson Metro Area, Southeast Pinal County and Upper Gila River Valley. * WHEN...From 11 AM to 8 PM MST Wednesday. * IMPACTS...Extreme heat and humidity will significantly increase the potential for heat related illnesses, particularly for those working or participating in outdoor activities. PRECAUTIONARY/PREPAREDNESS ACTIONS... Keep in mind you may need to adjust your plans based on the latest health and safety guidelines from CDC and your local officials. Cooling shelters may need to take your temperature or ask questions about how you are feeling. Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Young children and pets should never be left unattended in vehicles under any circumstances. Take extra precautions if you work or spend time outside. When possible reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose fitting clothing when possible. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. && $$ Visit us on Facebook...Twitter...YouTube...and at weather.gov/Tucson
429 WWUS75 KTWC 042055 NPWTWC URGENT - WEATHER MESSAGE National Weather Service Tucson AZ 155 PM MST Wed Aug 4 2021 AZZ501-502-504>506-509-050300- /O.CON.KTWC.EH.W.0002.000000T0000Z-210805T0300Z/ Western Pima County-Tohono O'odham Nation-Tucson Metro Area- South Central Pinal County-Southeast Pinal County- Upper Gila River Valley- Including the cities of Ajo, Organ Pipe Cactus N.M., Sells, Tucson, Green Valley, Marana, Vail, Picacho Peak State Park, Mammoth, Oracle, and Safford 155 PM MST Wed Aug 4 2021 ...EXCESSIVE HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM MST THIS EVENING... * WHAT...Dangerously hot conditions with afternoon temperatures peaking around 106 to 114 degrees. * WHERE...Western Pima County, Tohono O'odham Nation and South Central Pinal County. * WHEN...Through 8 PM MST Wednesday. * IMPACTS...Extreme heat and humidity will significantly increase the potential for heat related illnesses, particularly for those working or participating in outdoor activities. PRECAUTIONARY/PREPAREDNESS ACTIONS... Keep in mind you may need to adjust your plans based on the latest health and safety guidelines from CDC and your local officials. Cooling shelters may need to take your temperature or ask questions about how you are feeling. Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Young children and pets should never be left unattended in vehicles under any circumstances. Take extra precautions if you work or spend time outside. When possible reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose fitting clothing when possible. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. && $$ Visit us on Facebook...Twitter...YouTube...and at weather.gov/Tucson
099 WWUS75 KTWC 050250 NPWTWC URGENT - WEATHER MESSAGE National Weather Service Tucson AZ 750 PM MST Wed Aug 4 2021 AZZ501-502-504>506-509-050400- /O.EXP.KTWC.EH.W.0002.000000T0000Z-210805T0300Z/ Western Pima County-Tohono O'odham Nation-Tucson Metro Area- South Central Pinal County-Southeast Pinal County- Upper Gila River Valley- Including the cities of Ajo, Organ Pipe Cactus N.M., Sells, Tucson, Green Valley, Marana, Vail, Picacho Peak State Park, Mammoth, Oracle, and Safford 750 PM MST Wed Aug 4 2021 ...EXCESSIVE HEAT WARNING WILL EXPIRE AT 8 PM MST THIS EVENING... Temperatures will continue to lower through the rest of this evening. Thus, the warning will expire on time at 8 pm mst. $$ Visit us on Facebook...Twitter...YouTube...and at weather.gov/Tucson
The office that day
Everything else NWS Tucson, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 1, 5:23 PM MST | Special Weather Statement | TWC | 52 min | |
| Aug 1, 6:03 PM MST | Flash Flood Warning | TWC | Graham | 3 hr |
| Aug 1, 6:35 PM MST | Areal Flood Advisory | TWC | Graham | 3 hr |
| Aug 1, 6:44 PM MST | Special Weather Statement | TWC | 31 min | |
| Aug 1, 8:28 PM MST | Special Weather Statement | TWC | Cochise | 47 min |
| Aug 1, 8:40 PM MST | Areal Flood Advisory | TWC | Cochise | 2 hr |
| Aug 2, 12:43 PM MST | Special Weather Statement | TWC | Greenlee | 47 min |
| Aug 2, 1:27 PM MST | Special Weather Statement | TWC | Greenlee | 48 min |
| Aug 2, 2:43 PM MST | Special Weather Statement | TWC | Cochise | 47 min |
| Aug 2, 2:50 PM MST | Severe Thunderstorm Warning | TWC | Cochise | 40 min |
| Aug 2, 2:51 PM MST | Areal Flood Advisory | TWC | Cochise | 114 min |
| Aug 2, 3:20 PM MST | Areal Flood Advisory | TWC | Santa Cruz | 115 min |
| Aug 2, 4:04 PM MST | Special Weather Statement | TWC | Graham | 56 min |
| Aug 2, 4:22 PM MST | Areal Flood Advisory | TWC | Cochise | 113 min |
| Aug 2, 4:47 PM MST | Special Weather Statement | TWC | 43 min |
Nearby
Excessive 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.