Alert archive / Arizona / Red Flag Warnings in 2021
Red Flag Warning 20, NWS Tucson, AZ
NWS Tucson, AZ issued this red flag warning at Jun 4, 2021, 2:16 PM MST for 6 counties in Arizona. It took effect at Jun 5, 2021, 11:00 AM MST. It was in force for 10 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, 2021, 2:16 PM MST (21:16 UTC)
- In effect from
- Jun 5, 2021, 11:00 AM MST
- Expired
- Jun 5, 2021, 9:00 PM MST
- In force
- 10 hr
- Issued by
- NWS Tucson, AZ
Counties Cochise County, AZ, Graham County, AZ, Greenlee County, AZ, Pima County, AZ, Pinal County, AZ, Santa Cruz County, AZ
The radar
The Tucson radar (KEMX), 61 km from the middle of the area, began a volume at 21:17 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, 9.3 hours before the alert went out and 49 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
- 4171 m above ground
- 0-6 km bulk shear
- 19 kt
- 0-1 km storm-relative helicity
- 5 m²/s²
- 0-3 km storm-relative helicity
- 54 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
481 WWUS85 KTWC 042116 RFWTWC URGENT - FIRE WEATHER MESSAGE National Weather Service Tucson AZ 216 PM MST Fri Jun 4 2021 AZZ152-153-051100- /O.UPG.KTWC.FW.A.0014.210605T1800Z-210606T0400Z/ /O.NEW.KTWC.FW.W.0020.210605T1800Z-210606T0400Z/ Arizona Fire Weather Zone 152 Eastern half Desert Grasslands FDRA including elevations up to 5500 feet in Southwest Graham County and Eastern two thirds of Cochise County-Southern San Carlos Reservation- Southern Greenlee County below 5000 feet-TDC- Arizona Fire Weather Zone 153 Northern Graham County-Northern Greenlee County- White and Gila Mountains-Apache Sitgreaves NF- Southern San Carlos Reservation above 5000 feet-SDC- 216 PM MST Fri Jun 4 2021 ...RED FLAG WARNING IN EFFECT FROM 11 AM TO 9 PM MST SATURDAY FOR GUSTY WINDS, LOW RELATIVE HUMIDITY,AND VERY HIGH TO EXTREME FIRE DANGER FOR THE NORTHERN TWO THIRDS OF FIRE WEATHER ZONE 152 AND THE SOUTHERN PORTION OF ZONE 153... The National Weather Service in Tucson has issued a Red Flag Warning, which is in effect from 11 AM to 9 PM MST Saturday. The Fire Weather Watch is no longer in effect. * AFFECTED AREA...The northern two thirds of fire weather zone 152 and the south portion of Fire weather zone 153, which does not include the Alpine district. * TIMING...11 am until 9 pm Saturday. * WINDS...West-Northwest 15-30 mph, with gusts to around 40 mph. * RELATIVE HUMIDITY...6-11%. * IMPACTS...Any fires that develop or are ongoing will have the potential to spread rapidly and be resistant to control efforts. * FOR A DETAILED VIEW OF THE HAZARD AREA...Visit weather.gov/Tucson and click on the Detailed Hazards Icon. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now...or are expected to develop. A combination of strong winds...low relative humidity...and dry vegetation will create the potential for rapid and erratic fire growth. Please advise the appropriate officials or fire crews in the field of the Red Flag Warning for portions of Southeast Arizona. && $$ AZZ154-051100- /O.NEW.KTWC.FW.W.0020.210605T1800Z-210606T0400Z/ Arizona Fire Weather Zone 154 Forest Woodlands FDRA including the Sky Islands of Southeast Arizona above 5500 feet-Coronado NF-TDC- 216 PM MST Fri Jun 4 2021 ...RED FLAG WARNING IN EFFECT FROM 11 AM TO 9 PM MST SATURDAY FOR GUSTY WINDS, LOW RELATIVE HUMIDITY,AND VERY HIGH TO EXTREME FIRE DANGER FOR THE NORTHEAST PORTION OF FIRE WEATHER ZONE 154... The National Weather Service in Tucson has issued a Red Flag Warning, which is in effect from 11 AM to 9 PM MST Saturday. * AFFECTED AREA...Fire weather zone 154 east of the San Pedro Valley and from the Dos Cabezas Mountains northward. * TIMING...11 am until 9 pm Saturday. * WINDS...West-Northwest 15-30 mph, with gusts to around 40 mph. * RELATIVE HUMIDITY...8-16%. * IMPACTS...Any fires that develop or are ongoing will have the potential to spread rapidly and be resistant to control efforts. * FOR A DETAILED VIEW OF THE HAZARD AREA...Visit weather.gov/Tucson and click on the Detailed Hazards Icon. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now...or are expected to develop. A combination of strong winds...low relative humidity...and dry vegetation will create the potential for rapid and erratic fire growth. Please advise the appropriate officials or fire crews in the field of the Red Flag Warning for portions of Southeast Arizona. && $$ Cerniglia Visit us on Facebook...Twitter...YouTube...and at weather.gov/Tucson
3 follow-up statements
197 WWUS85 KTWC 050939 RFWTWC URGENT - FIRE WEATHER MESSAGE National Weather Service Tucson AZ 239 AM MST Sat Jun 5 2021 AZZ152>154-051745- /O.CON.KTWC.FW.W.0020.210605T1800Z-210606T0400Z/ Arizona Fire Weather Zone 152 Eastern half Desert Grasslands FDRA including elevations up to 5500 feet in Southwest Graham County and Eastern two thirds of Cochise County-Southern San Carlos Reservation- Southern Greenlee County below 5000 feet-TDC- Arizona Fire Weather Zone 153 Northern Graham County-Northern Greenlee County- White and Gila Mountains-Apache Sitgreaves NF- Southern San Carlos Reservation above 5000 feet-SDC- Arizona Fire Weather Zone 154 Forest Woodlands FDRA including the Sky Islands of Southeast Arizona above 5500 feet-Coronado NF-TDC- 239 AM MST Sat Jun 5 2021 ...RED FLAG WARNING REMAINS IN EFFECT FROM 11 AM THIS MORNING TO 9 PM MST THIS EVENING FOR GUSTY WINDS, LOW RELATIVE HUMIDITY,AND VERY HIGH TO EXTREME FIRE DANGER FOR THE NORTHERN TWO THIRDS OF FIRE WEATHER ZONE 152, THE SOUTHERN PORTION OF ZONE 153 AND THE NORTHEAST PORTION OF FIRE WEATHER ZONE 154... * AFFECTED AREA...The northern two thirds of fire weather zone 152, the southern portion of Fire weather zone 153 and Fire weather zone 154 east of the San Pedro Valley and from the Dos Cabezas Mountains northward. The warning does not include the Alpine district. * TIMING...11 AM MST until 9 PM MST today. * WINDS...West-Northwest 15-30 mph, with gusts to around 40 mph. * RELATIVE HUMIDITY...6-15%. * IMPACTS...Any fires that develop or are ongoing will have the potential to spread rapidly and be resistant to control efforts. * FOR A DETAILED VIEW OF THE HAZARD AREA...Visit weather.gov/Tucson and click on the Detailed Hazards Icon. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now...or are expected to develop. A combination of strong winds...low relative humidity...and dry vegetation will create the potential for rapid and erratic fire growth. Please advise the appropriate officials or fire crews in the field of the Red Flag Warning for portions of Southeast Arizona. && $$ Visit us on Facebook...Twitter...YouTube...and at weather.gov/Tucson
002 WWUS85 KTWC 052159 RFWTWC URGENT - FIRE WEATHER MESSAGE National Weather Service Tucson AZ 259 PM MST Sat Jun 5 2021 AZZ152>154-060200- /O.CON.KTWC.FW.W.0020.000000T0000Z-210606T0400Z/ Arizona Fire Weather Zone 152 Eastern half Desert Grasslands FDRA including elevations up to 5500 feet in Southwest Graham County and Eastern two thirds of Cochise County-Southern San Carlos Reservation- Southern Greenlee County below 5000 feet-TDC- Arizona Fire Weather Zone 153 Northern Graham County-Northern Greenlee County- White and Gila Mountains-Apache Sitgreaves NF- Southern San Carlos Reservation above 5000 feet-SDC- Arizona Fire Weather Zone 154 Forest Woodlands FDRA including the Sky Islands of Southeast Arizona above 5500 feet-Coronado NF-TDC- 259 PM MST Sat Jun 5 2021 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM MST THIS EVENING FOR GUSTY WINDS, LOW RELATIVE HUMIDITY,AND VERY HIGH TO EXTREME FIRE DANGER FOR THE NORTHERN TWO THIRDS OF FIRE WEATHER ZONE 152, THE SOUTHERN PORTION OF ZONE 153 AND THE NORTHEAST PORTION OF FIRE WEATHER ZONE 154... * AFFECTED AREA...The northern two thirds of fire weather zone 152, the southern portion of Fire weather zone 153 and Fire weather zone 154 east of the San Pedro Valley and from the Dos Cabezas Mountains northward. The warning does not include the Alpine district. * TIMING...until 9 PM MST this evening today. * WINDS...West-Northwest 15-30 mph, with gusts to around 40 mph. * RELATIVE HUMIDITY...6-15 percent. * IMPACTS...Any fires that develop or are ongoing will have the potential to spread rapidly and be resistant to control efforts. * FOR A DETAILED VIEW OF THE HAZARD AREA...Visit weather.gov/Tucson and click on the Detailed Hazards Icon. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now...or are expected to develop. A combination of strong winds...low relative humidity...and dry vegetation will create the potential for rapid and erratic fire growth. Please advise the appropriate officials or fire crews in the field of the Red Flag Warning for portions of Southeast Arizona. && $$ Visit us on Facebook...Twitter...YouTube...and at weather.gov/Tucson
357 WWUS85 KTWC 060407 RFWTWC URGENT - FIRE WEATHER MESSAGE National Weather Service Tucson AZ 907 PM MST Sat Jun 5 2021 AZZ152>154-060515- /O.EXP.KTWC.FW.W.0020.000000T0000Z-210606T0400Z/ Arizona Fire Weather Zone 152 Eastern half Desert Grasslands FDRA including elevations up to 5500 feet in Southwest Graham County and Eastern two thirds of Cochise County-Southern San Carlos Reservation- Southern Greenlee County below 5000 feet-TDC- Arizona Fire Weather Zone 153 Northern Graham County-Northern Greenlee County- White and Gila Mountains-Apache Sitgreaves NF- Southern San Carlos Reservation above 5000 feet-SDC- Arizona Fire Weather Zone 154 Forest Woodlands FDRA including the Sky Islands of Southeast Arizona above 5500 feet-Coronado NF-TDC- 907 PM MST Sat Jun 5 2021 ...RED FLAG WARNING HAS EXPIRED FOR PORTIONS OF FIRE WEATHER ZONES 152, 153, AND 154... Wind speeds continued to diminish with relative humidities anticipated to increase overnight. Thus, the Red Flag Warning was allowed to expire on time at 9pm mst this evening. $$ Visit us on Facebook...Twitter...YouTube...and at weather.gov/Tucson
Nearby
Red Flag Warnings in Arizona, 2021Every red flag 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.