Alert archive / Arizona / Red Flag Warnings in 2018
Red Flag Warning 13, NWS Tucson, AZ
NWS Tucson, AZ issued this red flag warning at Apr 30, 2018, 2:21 PM MST for 6 counties in Arizona. It took effect at May 1, 2018, 11:00 AM MST. It was in force for 8 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
- Apr 30, 2018, 2:21 PM MST (21:21 UTC)
- In effect from
- May 1, 2018, 11:00 AM MST
- Expired
- May 1, 2018, 7:00 PM MST
- In force
- 8 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 21:24 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, 9.4 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
- 3448 m above ground
- 0-6 km bulk shear
- 56 kt
- 0-1 km storm-relative helicity
- 103 m²/s²
- 0-3 km storm-relative helicity
- 178 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
045 WWUS85 KTWC 302121 RFWTWC URGENT - FIRE WEATHER MESSAGE National Weather Service Tucson AZ 221 PM MST Mon Apr 30 2018 AZZ151-152-010530- /O.UPG.KTWC.FW.A.0012.180501T1800Z-180502T0200Z/ /O.NEW.KTWC.FW.W.0013.180501T1800Z-180502T0200Z/ /O.NEW.KTWC.FW.A.0013.180502T1900Z-180503T0100Z/ /O.CON.KTWC.FW.W.0012.000000T0000Z-180501T0200Z/ Arizona Fire Weather Zone 151 Eastern Pima County-Southeastern Pinal County- Santa Cruz County-Western Cochise County- Coronado NF-TDC-Arizona Fire Weather Zone 152 Southern Greenlee County-Central and Eastern Cochise County- Southern Graham County-Southern San Carlos Apache Nation- 221 PM MST Mon Apr 30 2018 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 7 PM MST THIS EVENING FOR STRONG AND GUSTY WINDS, LOW HUMIDITY AND HIGH FIRE DANGER FOR SOUTHERN PORTIONS OF FIRE WEATHER ZONES 151 AND 152... ...RED FLAG WARNING IN EFFECT FROM 11 AM TO 7 PM MST TUESDAY FOR STRONG AND GUSTY WINDS, LOW HUMIDITY AND HIGH FIRE DANGER FOR SOUTHERN PORTIONS OF FIRE WEATHER ZONES 151 AND 152... ...FIRE WEATHER WATCH IN EFFECT WEDNESDAY AFTERNOON FOR STRONG AND GUSTY WINDS, LOW HUMIDITY AND HIGH FIRE DANGER FOR SOUTHERN PORTIONS OF FIRE WEATHER ZONES 151 AND 152... The National Weather Service in Tucson has issued a Red Flag Warning, which remains in effect until 7 PM MST Monday. Another Red Flag Warning goes into effect from 11 AM to 7 PM MST Tuesday. A Fire Weather Watch has also been issued for Wednesday afternoon. * AFFECTED AREA...Fire weather zones 151 and 152. * TIMING...The Red Flag Warning today is remains in effect until 7 PM MST this evening. Another Red Flag Warning goes into effect 11 AM MST Tuesday morning until 7 PM MST Tuesday evening. The Fire Weather Watch is from noon Wednesday until 6 PM MST Tuesday evening. * WINDS...Sustained 20-foot winds out of the southwest 20 to 30 mph with gusts to 45 mph. * RELATIVE HUMIDITY...Minimum humidity values range from 10 to 15 percent each day. * IMPACTS...Any fires that develop or are ongoing will have the potential to spread rapidly. * FOR A DETAILED VIEW OF THE HAZARD AREA...Visit weather.gov/Tucson and click on the Detailed Hazards Icon. PRECAUTIONARY/PREPAREDNESS ACTIONS... Please advise the appropriate officials or fire crews in the field of the Red Flag Warning and Fire Weather Watch for portions of Southeast Arizona. && 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. A Fire Weather Watch means that critical fire weather conditions are forecast to occur. Listen for later forecasts and possible Red Flag Warnings. Please advise the appropriate officials or fire crews in the field of the Fire Weather Watch for portions of Southeast Arizona. && $$ Visit us on Facebook...Twitter...YouTube...and at weather.gov/Tucson
4 follow-up statements
133 WWUS85 KTWC 010202 RFWTWC URGENT - FIRE WEATHER MESSAGE National Weather Service Tucson AZ 702 PM MST Mon Apr 30 2018 AZZ151-152-011200- /O.EXP.KTWC.FW.W.0012.000000T0000Z-180501T0200Z/ /O.CON.KTWC.FW.W.0013.180501T1800Z-180502T0200Z/ /O.CON.KTWC.FW.A.0013.180502T1900Z-180503T0100Z/ Arizona Fire Weather Zone 151 Eastern Pima County-Southeastern Pinal County- Santa Cruz County-Western Cochise County- Coronado NF-TDC-Arizona Fire Weather Zone 152 Southern Greenlee County-Central and Eastern Cochise County- Southern Graham County-Southern San Carlos Apache Nation- 702 PM MST Mon Apr 30 2018 ...RED FLAG WARNING REMAINS IN EFFECT FROM 11 AM TO 7 PM MST TUESDAY FOR STRONG AND GUSTY WINDS, LOW HUMIDITY AND HIGH FIRE DANGER FOR SOUTHERN PORTIONS OF FIRE WEATHER ZONES 151 AND 152... ...FIRE WEATHER WATCH REMAINS IN EFFECT WEDNESDAY AFTERNOON FOR STRONG AND GUSTY WINDS, LOW HUMIDITY AND HIGH FIRE DANGER FOR SOUTHERN PORTIONS OF FIRE WEATHER ZONES 151 AND 152... The National Weather Service in Tucson has issued a Red Flag Warning, which goes into effect from 11 AM to 7 PM MST Tuesday. A Fire Weather Watch has also been issued for Wednesday afternoon. * AFFECTED AREA...Fire weather zones 151 and 152. * TIMING...The Red Flag Warning goes into effect 11 AM MST Tuesday morning until 7 PM MST Tuesday evening. The Fire Weather Watch is from noon Wednesday until 6 PM MST Tuesday evening. * WINDS...Sustained 20-foot winds out of the southwest 20 to 30 mph with gusts to 45 mph. * RELATIVE HUMIDITY...Minimum humidity values range from 10 to 15 percent each day. * IMPACTS...Any fires that develop or are ongoing will have the potential to spread rapidly. * FOR A DETAILED VIEW OF THE HAZARD AREA...Visit weather.gov/Tucson and click on the Detailed Hazards Icon. PRECAUTIONARY/PREPAREDNESS ACTIONS... Please advise the appropriate officials or fire crews in the field of the Red Flag Warning and Fire Weather Watch for portions of Southeast Arizona. && 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. A Fire Weather Watch means that critical fire weather conditions are forecast to occur. Listen for later forecasts and possible Red Flag Warnings. Please advise the appropriate officials or fire crews in the field of the Fire Weather Watch for portions of Southeast Arizona. && $$ Visit us on Facebook...Twitter...YouTube...and at weather.gov/Tucson
338 WWUS85 KTWC 010932 RFWTWC URGENT - FIRE WEATHER MESSAGE National Weather Service Tucson AZ 232 AM MST Tue May 1 2018 AZZ151-152-012300- /O.CON.KTWC.FW.W.0013.180501T1800Z-180502T0200Z/ /O.CON.KTWC.FW.A.0013.180502T1900Z-180503T0100Z/ Arizona Fire Weather Zone 151 Eastern Pima County-Southeastern Pinal County- Santa Cruz County-Western Cochise County- Coronado NF-TDC-Arizona Fire Weather Zone 152 Southern Greenlee County-Central and Eastern Cochise County- Southern Graham County-Southern San Carlos Apache Nation- 232 AM MST Tue May 1 2018 ...RED FLAG WARNING REMAINS IN EFFECT FROM 11 AM THIS MORNING TO 7 PM MST THIS EVENING FOR STRONG AND GUSTY WINDS, LOW HUMIDITY AND HIGH TO VERY HIGH FIRE DANGER FOR SOUTHERN PORTIONS OF FIRE WEATHER ZONES 151 AND 152... ...FIRE WEATHER WATCH REMAINS IN EFFECT WEDNESDAY AFTERNOON FOR STRONG AND GUSTY WINDS, LOW HUMIDITY AND HIGH FIRE DANGER FOR SOUTHERN PORTIONS OF FIRE WEATHER ZONES 151 AND 152... * AFFECTED AREA...Today, the southern portions of fire weather zones 151 and 152. Wednesday, most of Cochise county. * TIMING...The Red Flag Warning is in effect today from 11 AM MST until 7 PM MST. The Fire Weather Watch is in effect Wednesday from noon until 6 PM MST. * WINDS...Sustained 20-foot winds out of the southwest 20 to 30 mph with gusts to 45 mph. * RELATIVE HUMIDITY...Minimum humidity values will range from 8 to 14 percent today and 12 to 18 percent in the watch area Wednesday. * IMPACTS...Any fires that develop or are ongoing will have the potential to spread rapidly. * 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. A Fire Weather Watch means that critical fire weather conditions are forecast to occur. Listen for later forecasts and possible Red Flag Warnings. Please advise the appropriate officials or fire crews in the field of the Fire Weather Watch for portions of Southeast Arizona. && $$ Cerniglia Visit us on Facebook...Twitter...YouTube...and at weather.gov/Tucson
333 WWUS85 KTWC 012136 RFWTWC URGENT - FIRE WEATHER MESSAGE National Weather Service Tucson AZ 236 PM MST Tue May 1 2018 AZZ151-152-021400- /O.CON.KTWC.FW.W.0013.000000T0000Z-180502T0200Z/ /O.CON.KTWC.FW.A.0013.180502T1900Z-180503T0100Z/ Arizona Fire Weather Zone 151 Eastern Pima County-Southeastern Pinal County- Santa Cruz County-Western Cochise County- Coronado NF-TDC-Arizona Fire Weather Zone 152 Southern Greenlee County-Central and Eastern Cochise County- Southern Graham County-Southern San Carlos Apache Nation- 236 PM MST Tue May 1 2018 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 7 PM MST THIS EVENING FOR STRONG AND GUSTY WINDS, LOW HUMIDITY AND HIGH TO VERY HIGH FIRE DANGER FOR SOUTHERN PORTIONS OF FIRE WEATHER ZONES 151 AND 152... ...FIRE WEATHER WATCH REMAINS IN EFFECT WEDNESDAY AFTERNOON FOR STRONG AND GUSTY WINDS, LOW HUMIDITY AND HIGH FIRE DANGER FOR SOUTHERN PORTIONS OF FIRE WEATHER ZONES 151 AND 152... * AFFECTED AREA...THE Red Flag Warning today is for the southern portions of fire weather zones 151 and 152. The Fire Weather Watch for Wednesday is for portions of Cochise county. * TIMING...The Red Flag Warning is in effect today until 7 PM MST. The Fire Weather Watch is in effect Wednesday from noon until 6 PM MST. * WINDS...Sustained 20-foot winds out of the southwest 20 to 30 mph with gusts to 45 mph. * RELATIVE HUMIDITY...Minimum humidity values will range from 8 to 14 percent today and 12 to 18 percent in the watch area Wednesday. * IMPACTS...Any fires that develop or are ongoing will have the potential to spread rapidly. * 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. A Fire Weather Watch means that critical fire weather conditions are forecast to occur. Listen for later forecasts and possible Red Flag Warnings. Please advise the appropriate officials or fire crews in the field of the Fire Weather Watch for portions of Southeast Arizona. && $$ Visit us on Facebook...Twitter...YouTube...and at weather.gov/Tucson
472 WWUS85 KTWC 020210 RFWTWC URGENT - FIRE WEATHER MESSAGE National Weather Service Tucson AZ 710 PM MST Tue May 1 2018 AZZ151-152-021400- /O.EXP.KTWC.FW.W.0013.000000T0000Z-180502T0200Z/ /O.CON.KTWC.FW.A.0013.180502T1900Z-180503T0100Z/ Arizona Fire Weather Zone 151 Eastern Pima County-Southeastern Pinal County- Santa Cruz County-Western Cochise County- Coronado NF-TDC-Arizona Fire Weather Zone 152 Southern Greenlee County-Central and Eastern Cochise County- Southern Graham County-Southern San Carlos Apache Nation- 710 PM MST Tue May 1 2018 ...FIRE WEATHER WATCH REMAINS IN EFFECT WEDNESDAY AFTERNOON FOR STRONG AND GUSTY WINDS, LOW HUMIDITY AND HIGH FIRE DANGER THE SOUTHERN PORTIONS OF FIRE WEATHER ZONES 151 AND 152... ...RED FLAG WARNING FOR TODAY HAS EXPIRED FOR SOUTHERN PORTIONS OF FIRE WEATHER ZONES 151 AND 152... * TIMING...The Fire Weather Watch is in effect Wednesday from noon until 6 PM MST. * WINDS...Sustained 20-foot winds out of the southwest 20 to 30 mph with gusts to 45 mph. * RELATIVE HUMIDITY...Minimum humidity values will range from 12 to 18 percent in the watch area Wednesday. * IMPACTS...Any fires that develop or are ongoing will have the potential to spread rapidly. * FOR A DETAILED VIEW OF THE HAZARD AREA...Visit weather.gov/Tucson and click on the Detailed Hazards Icon. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Fire Weather Watch means that critical fire weather conditions are forecast to occur. Listen for later forecasts and possible Red Flag Warnings. Please advise the appropriate officials or fire crews in the field of the Fire Weather Watch for portions of Southeast Arizona. && $$ 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 |
|---|---|---|---|---|
| Apr 30, 2:21 PM MST | Fire Weather Watch | TWC | Cochise, Graham, Greenlee, Pima, Pinal, Santa Cruz | 36 hr |
| Apr 30, 2:37 PM MST | Wind Advisory | TWC | Cochise, Graham, Pima, Santa Cruz | 28 hr |
Nearby
Red Flag Warnings in Arizona, 2018Every red flag warning in 2018
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.