Alert archive / Arizona / Excessive Heat Warnings in 2017
Excessive Heat Warning 2, NWS Tucson, AZ
NWS Tucson, AZ issued this excessive heat warning at Jun 4, 2017, 3:23 PM MST for Pima County, Pinal County, Arizona. It took effect at Jun 7, 2017, 11:00 AM MST. It was in force for 9 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
- Jun 4, 2017, 3:23 PM MST (22:23 UTC)
- In effect from
- Jun 7, 2017, 11:00 AM MST
- Expired
- Jun 7, 2017, 8:00 PM MST
- In force
- 9 hr
- Issued by
- NWS Tucson, AZ
Counties Pima County, AZ, Pinal County, AZ
The radar
The Phoenix radar (KIWA), 88 km from the middle of the area, began a volume at 22:21 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 (KDMA), launched 12:00Z, 10.4 hours before the alert went out and 73 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
- 3372 m above ground
- 0-6 km bulk shear
- 11 kt
- 0-1 km storm-relative helicity
- 63 m²/s²
- 0-3 km storm-relative helicity
- 37 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
799 WWUS75 KTWC 042223 NPWTWC URGENT - WEATHER MESSAGE National Weather Service Tucson AZ 323 PM MST Sun Jun 4 2017 AZZ501-502-504-051200- /O.NEW.KTWC.EH.W.0001.170606T1800Z-170607T0300Z/ /O.NEW.KTWC.EH.W.0002.170607T1800Z-170608T0300Z/ Western Pima County-Tohono O'Odham Nation-Tucson Metro Area- Including the cities of Ajo, Organ Pipe Cactus N.M., Sells, Tucson, Green Valley, Marana, and Vail 323 PM MST Sun Jun 4 2017 ...EXCESSIVE HEAT WARNING IN EFFECT FROM 11 AM TO 8 PM MST TUESDAY... ...EXCESSIVE HEAT WARNING IN EFFECT FROM 11 AM TO 8 PM MST WEDNESDAY... The National Weather Service in Tucson has issued an Excessive Heat Warning, which is in effect from 11 AM to 8 PM MST Tuesday. An Excessive Heat Warning has also been issued from 11 AM to 8 PM MST Wednesday. * IMPACTS...Unseasonably hot temperatures for early June and the first extended hot period of the year. The forecast high temperatures of 105 to 109 degrees could lead to dehydration, heat exhaustion, and heat stroke in a few people, especially those outdoors. * AFFECTED AREAS...Mainly the Tucson metro area westward across the Tohono O'Odham Nation and further westward into Western Pima County. * TEMPERATURES...High temperatures ranging from 105 to 109 degrees. * For a detailed view of the hazard area...visit weather.gov/Tucson and click on the Detailed Hazards Icon PRECAUTIONARY/PREPAREDNESS ACTIONS... An Excessive Heat Warning means that a prolonged period of extremely hot temperatures will occur. 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 light weight and loose fitting clothing when possible and drink plenty of water. The Occupational Safety and Health Administration recommends these additional steps to reduce risk during outdoor work... schedule 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 911. && $$ Visit us on Facebook...Twitter...YouTube...and at weather.gov/Tucson
10 follow-up statements
455 WWUS75 KTWC 051001 NPWTWC URGENT - WEATHER MESSAGE National Weather Service Tucson AZ 301 AM MST Mon Jun 5 2017 AZZ505-052015- /O.EXA.KTWC.EH.W.0001.170606T1800Z-170607T0300Z/ /O.EXA.KTWC.EH.W.0002.170607T1800Z-170608T0300Z/ South Central Pinal County- Including the city of Picacho Peak State Park 301 AM MST Mon Jun 5 2017 ...EXCESSIVE HEAT WARNING IN EFFECT FROM 11 AM TO 8 PM MST TUESDAY... ...EXCESSIVE HEAT WARNING IN EFFECT FROM 11 AM TO 8 PM MST WEDNESDAY... The National Weather Service in Tucson has issued an Excessive Heat Warning, which is in effect from 11 AM to 8 PM MST Tuesday and Wednesday. * IMPACTS...The forecast high temperatures of 105 to 109 degrees could lead to dehydration, heat exhaustion, and heat stroke in a few people, especially those outdoors. * AFFECTED AREAS...Mainly in western sections of Pinal county. * TEMPERATURES...High temperatures ranging from 105 to 109 degrees. * For a detailed view of the hazard area...visit weather.gov/Tucson and click on the Detailed Hazards Icon PRECAUTIONARY/PREPAREDNESS ACTIONS... An Excessive Heat Warning means that a prolonged period of extremely hot temperatures will occur. Take extra precautions if you work or spend time outside. When possible...reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear light weight and loose fitting clothing when possible and drink plenty of water. The Occupational Safety and Health Administration recommends these additional steps to reduce risk during outdoor work... schedule frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat Stroke is an emergency...CALL 911. && $$ AZZ501-502-504-052015- /O.CON.KTWC.EH.W.0001.170606T1800Z-170607T0300Z/ /O.CON.KTWC.EH.W.0002.170607T1800Z-170608T0300Z/ Western Pima County-Tohono O'Odham Nation-Tucson Metro Area- Including the cities of Ajo, Organ Pipe Cactus N.M., Sells, Tucson, Green Valley, Marana, and Vail 301 AM MST Mon Jun 5 2017 ...EXCESSIVE HEAT WARNING REMAINS IN EFFECT FROM 11 AM TO 8 PM MST TUESDAY... ...EXCESSIVE HEAT WARNING REMAINS IN EFFECT FROM 11 AM TO 8 PM MST WEDNESDAY... * IMPACTS...The forecast high temperatures of 105 to 109 degrees could lead to dehydration, heat exhaustion, and heat stroke in a few people, especially those outdoors. * AFFECTED AREAS...Mainly the Tucson metro area westward across the Tohono O'Odham Nation and further westward into Western Pima County. * TEMPERATURES...High temperatures ranging from 105 to 109 degrees. * For a detailed view of the hazard area...visit weather.gov/Tucson and click on the Detailed Hazards Icon PRECAUTIONARY/PREPAREDNESS ACTIONS... An Excessive Heat Warning means that a prolonged period of extremely hot temperatures will occur. 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 light weight and loose fitting clothing when possible and drink plenty of water. The Occupational Safety and Health Administration recommends these additional steps to reduce risk during outdoor work... schedule 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 911. && $$ Visit us on Facebook...Twitter...YouTube...and at weather.gov/Tucson
899 WWUS75 KTWC 051952 NPWTWC URGENT - WEATHER MESSAGE National Weather Service Tucson AZ 1252 PM MST Mon Jun 5 2017 AZZ501-502-504-505-061200- /O.CON.KTWC.EH.W.0001.170606T1800Z-170607T0300Z/ /O.CON.KTWC.EH.W.0002.170607T1800Z-170608T0300Z/ Western Pima County-Tohono O'Odham Nation-Tucson Metro Area- South Central Pinal County- Including the cities of Ajo, Organ Pipe Cactus N.M., Sells, Tucson, Green Valley, Marana, Vail, and Picacho Peak State Park 1252 PM MST Mon Jun 5 2017 ...EXCESSIVE HEAT WARNING REMAINS IN EFFECT FROM 11 AM TO 8 PM MST TUESDAY... ...EXCESSIVE HEAT WARNING REMAINS IN EFFECT FROM 11 AM TO 8 PM MST WEDNESDAY... * IMPACTS...The forecast high temperatures of 105 to 109 degrees could lead to dehydration, heat exhaustion, and heat stroke in a few people, especially those outdoors. * AFFECTED AREAS...The Tucson metro area, the Tohono O'Odham Nation, western Pima County and south central Pinal County. * TEMPERATURES...High temperatures ranging from 105 to 109 degrees. * For a detailed view of the hazard area...visit weather.gov/Tucson and click on the Detailed Hazards Icon PRECAUTIONARY/PREPAREDNESS ACTIONS... An Excessive Heat Warning means that a prolonged period of extremely hot temperatures will occur. Take extra precautions if you work or spend time outside. When possible...reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear light weight and loose fitting clothing when possible and drink plenty of water. The Occupational Safety and Health Administration recommends these additional steps to reduce risk during outdoor work... schedule frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat Stroke is an emergency...CALL 911. && $$ Visit us on Facebook...Twitter...YouTube...and at weather.gov/Tucson
954 WWUS75 KTWC 061008 NPWTWC URGENT - WEATHER MESSAGE National Weather Service Tucson AZ 308 AM MST Tue Jun 6 2017 AZZ501-502-504-505-062215- /O.CON.KTWC.EH.W.0001.170606T1800Z-170607T0300Z/ /O.CON.KTWC.EH.W.0002.170607T1800Z-170608T0300Z/ Western Pima County-Tohono O'Odham Nation-Tucson Metro Area- South Central Pinal County- Including the cities of Ajo, Organ Pipe Cactus N.M., Sells, Tucson, Green Valley, Marana, Vail, and Picacho Peak State Park 308 AM MST Tue Jun 6 2017 ...EXCESSIVE HEAT WARNING REMAINS IN EFFECT FROM 11 AM THIS MORNING TO 8 PM MST THIS EVENING... ...EXCESSIVE HEAT WARNING REMAINS IN EFFECT FROM 11 AM TO 8 PM MST WEDNESDAY... * IMPACTS...The forecast high temperatures of 105 to 109 degrees could lead to dehydration, heat exhaustion, and heat stroke in a few people, especially those outdoors. * AFFECTED AREAS...The Tucson metro area, the Tohono O'Odham Nation, western Pima County and south central Pinal County. * TEMPERATURES...High temperatures ranging from 105 to 109 degrees. * For a detailed view of the hazard area...visit weather.gov/Tucson and click on the Detailed Hazards Icon PRECAUTIONARY/PREPAREDNESS ACTIONS... An Excessive Heat Warning means that a prolonged period of extremely hot temperatures will occur. 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 light weight and loose fitting clothing when possible and drink plenty of water. The Occupational Safety and Health Administration recommends these additional steps to reduce risk during outdoor work... schedule 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 911. && $$ Visit us on Facebook...Twitter...YouTube...and at weather.gov/Tucson
595 WWUS75 KTWC 062145 NPWTWC URGENT - WEATHER MESSAGE National Weather Service Tucson AZ 245 PM MST Tue Jun 6 2017 AZZ504-070300- /O.CAN.KTWC.EH.W.0002.170607T1800Z-170608T0300Z/ /O.CON.KTWC.EH.W.0001.000000T0000Z-170607T0300Z/ Tucson Metro Area- Including the cities of Tucson, Green Valley, Marana, and Vail 245 PM MST Tue Jun 6 2017 ...EXCESSIVE HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM MST THIS EVENING... ...EXCESSIVE HEAT WARNING IS CANCELLED FOR WEDNESDAY... The National Weather Service in Tucson has cancelled the Excessive Heat Warning for Wednesday across eastern Pima county. * IMPACTS...The forecast high temperatures today of 104 to 106 degrees could lead to dehydration, heat exhaustion, and heat stroke in a few people, especially those outdoors. * AFFECTED AREAS...Eastern Pima County including the Tucson metro area. * TEMPERATURES...High temperatures today will range from 104 to 106 degrees. * For a detailed view of the hazard area...visit weather.gov/Tucson and click on the Detailed Hazards Icon PRECAUTIONARY/PREPAREDNESS ACTIONS... An Excessive Heat Warning means that a prolonged period of extremely hot temperatures will occur. Take extra precautions if you work or spend time outside. When possible...reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear light weight and loose fitting clothing when possible and drink plenty of water. The Occupational Safety and Health Administration recommends these additional steps to reduce risk during outdoor work... schedule frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat Stroke is an emergency...CALL 911. && $$ AZZ501-502-505-070545- /O.CON.KTWC.EH.W.0001.000000T0000Z-170607T0300Z/ /O.CON.KTWC.EH.W.0002.170607T1800Z-170608T0300Z/ 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 245 PM MST Tue Jun 6 2017 ...EXCESSIVE HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM MST THIS EVENING... ...EXCESSIVE HEAT WARNING REMAINS IN EFFECT FROM 11 AM TO 8 PM MST WEDNESDAY... * IMPACTS...The forecast high temperatures of 105 to 109 degrees could lead to dehydration, heat exhaustion, and heat stroke in a few people, especially those outdoors. * AFFECTED AREAS...The Tohono O'Odham Nation, western Pima County and south central Pinal County. * TEMPERATURES...High temperatures ranging from 105 to 109 degrees. * For a detailed view of the hazard area...visit weather.gov/Tucson and click on the Detailed Hazards Icon PRECAUTIONARY/PREPAREDNESS ACTIONS... An Excessive Heat Warning means that a prolonged period of extremely hot temperatures will occur. 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 light weight and loose fitting clothing when possible and drink plenty of water. The Occupational Safety and Health Administration recommends these additional steps to reduce risk during outdoor work... schedule 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 911. && $$ Visit us on Facebook...Twitter...YouTube...and at weather.gov/Tucson
432 WWUS75 KTWC 070256 NPWTWC URGENT - WEATHER MESSAGE National Weather Service Tucson AZ 756 PM MST Tue Jun 6 2017 AZZ501-502-505-071100- /O.EXP.KTWC.EH.W.0001.000000T0000Z-170607T0300Z/ /O.CON.KTWC.EH.W.0002.170607T1800Z-170608T0300Z/ Western Pima County-Tohono O'Odham Nation- South Central Pinal County- Including the cities of Ajo, Organ Pipe Cactus N.M., Sells, and Picacho Peak State Park 756 PM MST Tue Jun 6 2017 ...EXCESSIVE HEAT WARNING REMAINS IN EFFECT FROM 11 AM TO 8 PM MST WEDNESDAY... ...EXCESSIVE HEAT WARNING WILL EXPIRE AT 8 PM MST THIS EVENING... * IMPACTS...Temperatures could lead to dehydration, heat exhaustion, and heat stroke in a few people, especially those outdoors. * AFFECTED AREAS...The Tohono O'Odham Nation, western Pima County and south central Pinal County. * TEMPERATURES...High temperatures ranging from 105 to 108 degrees. * For a detailed view of the hazard area...visit weather.gov/Tucson and click on the Detailed Hazards Icon PRECAUTIONARY/PREPAREDNESS ACTIONS... An Excessive Heat Warning means that a prolonged period of extremely hot temperatures will occur. Take extra precautions if you work or spend time outside. When possible...reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear light weight and loose fitting clothing when possible and drink plenty of water. The Occupational Safety and Health Administration recommends these additional steps to reduce risk during outdoor work... schedule frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat Stroke is an emergency...CALL 911. && $$ AZZ504-070400- /O.EXP.KTWC.EH.W.0001.000000T0000Z-170607T0300Z/ Tucson Metro Area- Including the cities of Tucson, Green Valley, Marana, and Vail 756 PM MST Tue Jun 6 2017 ...EXCESSIVE HEAT WARNING WILL EXPIRE AT 8 PM MST THIS EVENING... After today's temperatures of 104 to 107 across the area, temperatures will fall back 1 to 4 degrees tomorrow as we see a modest moisture increase from the east, along with isolated showers and thunderstorms tomorrow afternoon. $$ Visit us on Facebook...Twitter...YouTube...and at weather.gov/Tucson
237 WWUS75 KTWC 070948 NPWTWC URGENT - WEATHER MESSAGE National Weather Service Tucson AZ 248 AM MST Wed Jun 7 2017 AZZ501-502-505-071800- /O.CON.KTWC.EH.W.0002.170607T1800Z-170608T0300Z/ Western Pima County-Tohono O'Odham Nation- South Central Pinal County- Including the cities of Ajo, Organ Pipe Cactus N.M., Sells, and Picacho Peak State Park 248 AM MST Wed Jun 7 2017 ...EXCESSIVE HEAT WARNING REMAINS IN EFFECT FROM 11 AM THIS MORNING TO 8 PM MST THIS EVENING... * IMPACTS...Temperatures could lead to dehydration, heat exhaustion, and heat stroke in a few people, especially those outdoors. * AFFECTED AREAS...The Tohono O'Odham Nation, western Pima County and south central Pinal County. * TEMPERATURES...High temperatures ranging from 105 to 108 degrees. * For a detailed view of the hazard area...visit weather.gov/Tucson and click on the Detailed Hazards Icon PRECAUTIONARY/PREPAREDNESS ACTIONS... An Excessive Heat Warning means that a prolonged period of extremely hot temperatures will occur. Take extra precautions if you work or spend time outside. When possible...reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear light weight and loose fitting clothing when possible and drink plenty of water. The Occupational Safety and Health Administration recommends these additional steps to reduce risk during outdoor work... schedule frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat Stroke is an emergency...CALL 911. && $$ Visit us on Facebook...Twitter...YouTube...and at weather.gov/Tucson
718 WWUS75 KTWC 071646 NPWTWC URGENT - WEATHER MESSAGE National Weather Service Tucson AZ 946 AM MST Wed Jun 7 2017 AZZ501-502-505-080300- /O.CON.KTWC.EH.W.0002.170607T1800Z-170608T0300Z/ 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 946 AM MST Wed Jun 7 2017 ...EXCESSIVE HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM MST THIS EVENING... * IMPACTS...Temperatures could lead to dehydration, heat exhaustion, and heat stroke in a few people, especially those outdoors. * AFFECTED AREAS...The Tohono O'Odham Nation, western Pima County and south central Pinal County. * TEMPERATURES...High temperatures ranging from 105 to 108 degrees. * For a detailed view of the hazard area...visit weather.gov/Tucson and click on the Detailed Hazards Icon PRECAUTIONARY/PREPAREDNESS ACTIONS... An Excessive Heat Warning means that a prolonged period of extremely hot temperatures will occur. 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 light weight and loose fitting clothing when possible and drink plenty of water. The Occupational Safety and Health Administration recommends these additional steps to reduce risk during outdoor work... schedule 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 911. && $$ Visit us on Facebook...Twitter...YouTube...and at weather.gov/Tucson
092 WWUS75 KTWC 080016 NPWTWC URGENT - WEATHER MESSAGE National Weather Service Tucson AZ 516 PM MST Wed Jun 7 2017 AZZ502-080300- /O.NEW.KTWC.DU.Y.0014.170608T0016Z-170608T0200Z/ /O.CON.KTWC.EH.W.0002.000000T0000Z-170608T0300Z/ Tohono O'Odham Nation- Including the city of Sells 516 PM MST Wed Jun 7 2017 ...BLOWING DUST ADVISORY IN EFFECT UNTIL 7 PM MST THIS EVENING... ...EXCESSIVE HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM MST THIS EVENING... The National Weather Service in Tucson has issued a Blowing Dust Advisory, which is in effect until 7 PM MST this evening. * IMPACTS...Temperatures could lead to dehydration, heat exhaustion, and heat stroke in a few people, especially those outdoors. * IMPACTS...Blowing dust can restrict visibilities below a mile posing a significant hazard to motorists. * AFFECTED AREAS...The Tohono O'Odham Nation, western Pima County and south central Pinal County. * TEMPERATURES...High temperatures ranging from 105 to 108 degrees. * TIMING...5 PM to 7 PM * WINDS...30 to 40 mph. * VISIBILITY...Below 1 mile at times. * For a detailed view of the hazard area...visit weather.gov/Tucson and click on the Detailed Hazards Icon * Current air pollution levels are available from the Pima County Department of Environmental Quality website at www.pima.gov/deq or by calling (520) 724-7446 PRECAUTIONARY/PREPAREDNESS ACTIONS... An Excessive Heat Warning means that a prolonged period of extremely hot temperatures will occur. 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 light weight and loose fitting clothing when possible and drink plenty of water. The Occupational Safety and Health Administration recommends these additional steps to reduce risk during outdoor work... schedule 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 911. A Blowing Dust Advisory means that blowing dust will restrict visibilities below one mile in some areas. Travelers are urged to use caution. If you encounter localized dense blowing dust... especially near plowed fields or construction sites...do not drive into it if at all possible. && $$ AZZ501-505-080300- /O.CON.KTWC.EH.W.0002.000000T0000Z-170608T0300Z/ Western Pima County-South Central Pinal County- Including the cities of Ajo, Organ Pipe Cactus N.M., and Picacho Peak State Park 516 PM MST Wed Jun 7 2017 ...EXCESSIVE HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM MST THIS EVENING... * IMPACTS...Temperatures could lead to dehydration, heat exhaustion, and heat stroke in a few people, especially those outdoors. * AFFECTED AREAS...The Tohono O'Odham Nation, western Pima County and south central Pinal County. * TEMPERATURES...High temperatures ranging from 105 to 108 degrees. * For a detailed view of the hazard area...visit weather.gov/Tucson and click on the Detailed Hazards Icon PRECAUTIONARY/PREPAREDNESS ACTIONS... An Excessive Heat Warning means that a prolonged period of extremely hot temperatures will occur. 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 light weight and loose fitting clothing when possible and drink plenty of water. The Occupational Safety and Health Administration recommends these additional steps to reduce risk during outdoor work... schedule 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 911. && $$ AZZ503-504-080200- /O.NEW.KTWC.DU.Y.0014.170608T0016Z-170608T0200Z/ Upper Santa Cruz River Valley/Altar Valley-Tucson Metro Area- Including the cities of Tucson, Green Valley, Marana, and Vail 516 PM MST Wed Jun 7 2017 ...BLOWING DUST ADVISORY IN EFFECT UNTIL 7 PM MST THIS EVENING... The National Weather Service in Tucson has issued a Blowing Dust Advisory, which is in effect until 7 PM MST this evening. * IMPACTS...Blowing dust can restrict visibilities below a mile posing a significant hazard to motorists. * TIMING...5PM to 7PM * WINDS...30 to 40 MPH. * VISIBILITY...Below 1 mile at times. * For a detailed view of the hazard area...visit weather.gov/Tucson and click on the Detailed Hazards Icon * Current air pollution levels are available from the Pima County Department of Environmental Quality website at www.pima.gov/deq or by calling (520) 724-7446 PRECAUTIONARY/PREPAREDNESS ACTIONS... A Blowing Dust Advisory means that blowing dust will restrict visibilities below one mile in some areas. Travelers are urged to use caution. If you encounter localized dense blowing dust... especially near plowed fields or construction sites...do not drive into it if at all possible. && $$ Visit us on Facebook...Twitter...YouTube...and at weather.gov/Tucson
299 WWUS75 KTWC 080055 NPWTWC URGENT - WEATHER MESSAGE National Weather Service Tucson AZ 555 PM MST Wed Jun 7 2017 AZZ502-080300- /O.CAN.KTWC.DU.Y.0014.000000T0000Z-170608T0200Z/ /O.CON.KTWC.EH.W.0002.000000T0000Z-170608T0300Z/ Tohono O'Odham Nation- Including the city of Sells 555 PM MST Wed Jun 7 2017 ...EXCESSIVE HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM MST THIS EVENING... ...BLOWING DUST ADVISORY IS CANCELLED... The National Weather Service in Tucson has cancelled the Blowing Dust Advisory. Storm outflows are falling apart as they push west of Tucson. * IMPACTS...Temperatures could lead to dehydration, heat exhaustion, and heat stroke in a few people, especially those outdoors. * AFFECTED AREAS...The Tohono O'Odham Nation, western Pima County and south central Pinal County. * TEMPERATURES...High temperatures ranging from 105 to 108 degrees. * For a detailed view of the hazard area...visit weather.gov/Tucson and click on the Detailed Hazards Icon * Current air pollution levels are available from the Pima County Department of Environmental Quality website at www.pima.gov/deq or by calling (520) 724-7446 PRECAUTIONARY/PREPAREDNESS ACTIONS... An Excessive Heat Warning means that a prolonged period of extremely hot temperatures will occur. 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 light weight and loose fitting clothing when possible and drink plenty of water. The Occupational Safety and Health Administration recommends these additional steps to reduce risk during outdoor work... schedule 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 911. && $$ AZZ503-504-080200- /O.CAN.KTWC.DU.Y.0014.000000T0000Z-170608T0200Z/ Upper Santa Cruz River Valley/Altar Valley-Tucson Metro Area- 555 PM MST Wed Jun 7 2017 ...BLOWING DUST ADVISORY IS CANCELLED... The National Weather Service in Tucson has cancelled the Blowing Dust Advisory. Storm outflows are falling apart as they push west of Tucson. $$ AZZ501-505-080300- /O.CON.KTWC.EH.W.0002.000000T0000Z-170608T0300Z/ Western Pima County-South Central Pinal County- Including the cities of Ajo, Organ Pipe Cactus N.M., and Picacho Peak State Park 555 PM MST Wed Jun 7 2017 ...EXCESSIVE HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM MST THIS EVENING... * IMPACTS...Temperatures could lead to dehydration, heat exhaustion, and heat stroke in a few people, especially those outdoors. * AFFECTED AREAS...The Tohono O'Odham Nation, western Pima County and south central Pinal County. * TEMPERATURES...High temperatures ranging from 105 to 108 degrees. * For a detailed view of the hazard area...visit weather.gov/Tucson and click on the Detailed Hazards Icon PRECAUTIONARY/PREPAREDNESS ACTIONS... An Excessive Heat Warning means that a prolonged period of extremely hot temperatures will occur. 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 light weight and loose fitting clothing when possible and drink plenty of water. The Occupational Safety and Health Administration recommends these additional steps to reduce risk during outdoor work... schedule 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 911. && $$ Visit us on Facebook...Twitter...YouTube...and at weather.gov/Tucson
353 WWUS75 KTWC 080303 NPWTWC URGENT - WEATHER MESSAGE National Weather Service Tucson AZ 803 PM MST Wed Jun 7 2017 AZZ501-502-505-080415- /O.EXP.KTWC.EH.W.0002.000000T0000Z-170608T0300Z/ Western Pima County-Tohono O'Odham Nation- South Central Pinal County- Including the cities of Ajo, Organ Pipe Cactus N.M., Sells, and Picacho Peak State Park 803 PM MST Wed Jun 7 2017 ...EXCESSIVE HEAT WARNING HAS EXPIRED... Temperatures trends will start to fall back a few degrees into the weekend.. $$ Visit us on Facebook...Twitter...YouTube...and at weather.gov/Tucson
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 Tucson, AZ wrote its last area forecast discussion before this excessive heat warning went out at Jun 4, 10:10 AM MST, 5 hours 13 minutes earlier.
Area forecast discussion, Jun 4, 10:10 AM MST, 5 hours 13 minutes before
Area Forecast Discussion National Weather Service Tucson AZ 1010 AM MST Sun Jun 4 2017 .SYNOPSIS...Hot daytime temperatures and a few afternoon thunderstorms mainly near the New Mexico and International borders will prevail this week. && .DISCUSSION...Clear skies prevail at this time except for a few cumuloform clouds across the White Mountains, Mount Graham, and the Chiricahua Mountains in eastern Cochise County. Dewpoints at lower elevations valid 9 am MST ranged from the 30s-mid 40s, and these temperatures were 2-6 degrees lower versus 24 hours ago. Surface temperatures valid 9 am MST were 2-4 degrees warmer versus this time Saturday. 04/12Z KTWC sounding total precip water value of 0.76 inch was nearly identical to 24 hours ago. The column was somewhat saturated in the 600-500 mb layer, but remained very dry in the surface-700 mb layer and above 500 mb. 04/12Z upper air plots depicted a 587 dm high centered near the White Mountains with a ridge axis extending northward into the northern Rockies. A weak upper low was centered over western Oklahoma and a trough axis was near the Pacific Northwest coast. Light northwesterly flow aloft above 500 mb prevailed across southeast Arizona earlier this morning. 04/12Z Univ. of AZ WRF-NAM and several HRRR solutions were fairly similar with the depiction of potential shower/tstm development for early this afternoon. The White Mountains and Chiricahua Mountains were favored for this development via both models, but the HRRR also depicted potential development further west across Mount Graham. The inherited official forecast appears to trend toward the HRRR solutions. Any measurable rainfall will be quite light, or mostly just a few hundredths of an inch or so. At any rate, the main forecast emphasis for today, as well as for the upcoming week, is regarding the hot daytime temperatures. Strong high pressure will remain quasi-stationary through about Wednesday, then move east of the area by the weekend. This pattern will translate into well above normal daytime temperatures during the next several days. Please refer to the additional sections for further detail. && .AVIATION...Valid thru 05/18Z. Isolated -TSRA/-SHRA mainly near the New Mexico border this afternoon. Otherwise, FEW-SCT clouds at 10k-15k ft AGL this afternoon with SKC at other times. Surface wind variable in direction mainly less than 12 kts, though afternoon gusts near 20 kts especially in vicinity of KSAD. Aviation discussion not updated for TAF amendments. && .FIRE WEATHER...A few afternoon thunderstorms may occur mainly near the New Mexico border this week, with the bulk of thunderstorms remaining east of the area in New Mexico. Most rainfall amounts will be quite light. However, brief gusty and erratic winds may occur due to thunderstorm outflows. Otherwise, dry conditions with 20-foot winds generally less than 15 mph will prevail, although afternoon gusts will occur due to strong daytime heating. && .PREV DISCUSSION /306 AM MST/...The main weather story will be the heat as high pressure aloft continues to strengthen over the region. Latest models still suggested that enough moisture will linger across eastern sections of the CWA to support some afternoon and early evening thunderstorms through the week. High temperatures were projected to peak around Wednesday and Thursday before the ridge shifts eastward in response to a storm system entering the west coast. && .TWC WATCHES/WARNINGS/ADVISORIES...None. && 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 |
|---|---|---|---|---|
| Jun 4, 3:23 PM MST | Excessive Heat Warning | TWC | Pima, Pinal | 53 hr |
Nearby
Excessive Heat Warnings in Arizona, 2017Every excessive heat warning in 2017
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.