Alert archive / Arizona / Red Flag Warnings in 2018
Red Flag Warning 3, NWS Tucson, AZ
NWS Tucson, AZ issued this red flag warning at Feb 11, 2018, 2:10 PM MST for 6 counties in Arizona. It took effect at Feb 12, 2018, 12:00 PM MST. It was in force for 7 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
- Feb 11, 2018, 2:10 PM MST (21:10 UTC)
- In effect from
- Feb 12, 2018, 12:00 PM MST
- Expired
- Feb 12, 2018, 7:00 PM MST
- In force
- 7 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 21:15 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, 9.2 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
- 2968 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- 29 m²/s²
- 0-3 km storm-relative helicity
- 79 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
546 WWUS85 KTWC 112110 RFWTWC URGENT - FIRE WEATHER MESSAGE National Weather Service Tucson AZ 210 PM MST Sun Feb 11 2018 AZZ151-152-121230- /O.UPG.KTWC.FW.A.0003.180212T1900Z-180213T0200Z/ /O.NEW.KTWC.FW.W.0003.180212T1900Z-180213T0200Z/ 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- 210 PM MST Sun Feb 11 2018 ...RED FLAG WARNING IN EFFECT FROM NOON TO 7 PM MST MONDAY FOR STRONG WINDS, LOW RELATIVE HUMIDITY AND HIGH FIRE DANGER FOR PORTIONS OF FIRE WEATHER ZONES 151 AND 152... The National Weather Service in Tucson has issued a Red Flag Warning, which is in effect from noon to 7 PM MST Monday. The Fire Weather Watch is no longer in effect. * AFFECTED AREA...Portions of Fire Weather Zones 151 and 152, or much of Cochise County. * TIMING...Monday afternoon and early evening between 12 pm and 7 pm MST. * WINDS...20-ft south to southwest increasing Monday afternoon to 15 to 25 mph, with gusts up to around 35 to 40 mph. * RELATIVE HUMIDITY...Minimum relative humidity of 13 to 20 percent. * 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. Please advise the appropriate officials or fire crews in the field of the Red Flag Warning for portions of Southeast Arizona. && $$ Visit us on Facebook...Twitter...YouTube...and at weather.gov/Tucson
2 follow-up statements
582 WWUS85 KTWC 121017 RFWTWC URGENT - FIRE WEATHER MESSAGE National Weather Service Tucson AZ 317 AM MST Mon Feb 12 2018 AZZ151-152-130200- /O.CON.KTWC.FW.W.0003.180212T1900Z-180213T0200Z/ Arizona Fire Weather Zone 151 Eastern Pima County-Southeastern Pinal County- Santa Cruz County-Western Cochise County- Coronado NF-TDC-Arizona Fire Weather Zone 152 Southern Greenlee County-Central and Eastern Cochise County- Southern Graham County-Southern San Carlos Apache Nation- 317 AM MST Mon Feb 12 2018 ...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TODAY TO 7 PM MST THIS EVENING FOR STRONG WINDS, LOW RELATIVE HUMIDITY AND HIGH FIRE DANGER FOR PORTIONS OF FIRE WEATHER ZONES 151 AND 152... * AFFECTED AREA...Portions of Fire Weather Zones 151 and 152, or much of Cochise County. * TIMING...This afternoon and early evening between 12 pm and 7 pm MST. * WINDS...20-ft south to southwest increasing this afternoon to 15 to 25 mph, with gusts up to around 35 to 40 mph. * RELATIVE HUMIDITY...Minimum relative humidity of 15 to 20 percent. * IMPACTS...Any fires that develop or are ongoing will have the potential to spread rapidly. * FOR A DETAILED VIEW OF THE HAZARD AREA...Visit weather.gov/Tucson and click on the Detailed Hazards Icon. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now...or are expected to develop. A combination of strong winds...low relative humidity...and dry vegetation will create the potential for rapid and erratic fire growth. Please advise the appropriate officials or fire crews in the field of the Red Flag Warning for portions of Southeast Arizona. && $$ Visit us on Facebook...Twitter...YouTube...and at weather.gov/Tucson
047 WWUS85 KTWC 130144 RFWTWC URGENT - FIRE WEATHER MESSAGE National Weather Service Tucson AZ 644 PM MST Mon Feb 12 2018 AZZ151-152-130245- /O.EXP.KTWC.FW.W.0003.000000T0000Z-180213T0200Z/ 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- 644 PM MST Mon Feb 12 2018 ...RED FLAG WARNING WILL EXPIRE AT 7 PM MST THIS EVENING... Localized critical fire weather conditions may continue through 8 pm this evening. Wind speeds continue to decrease and humidities continue to increase this evening. Therefore, the Red Flag Warning was allowed to expire at 7 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 |
|---|---|---|---|---|
| Feb 11, 3:16 AM MST | Fire Weather Watch | TWC | Cochise, Graham, Greenlee, Pima, Pinal, Santa Cruz | 11 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.