Alert archive / Arizona / Red Flag Warnings in 2017
Red Flag Warning 3, NWS Tucson, AZ
NWS Tucson, AZ issued this red flag warning at Apr 7, 2017, 1:51 PM MST for 6 counties in Arizona. It took effect at Apr 8, 2017, 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
- Apr 7, 2017, 1:51 PM MST (20:51 UTC)
- In effect from
- Apr 8, 2017, 12:00 PM MST
- Expired
- Apr 8, 2017, 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 20:54 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, 8.9 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
- 3635 m above ground
- 0-6 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- 29 m²/s²
- 0-3 km storm-relative helicity
- 113 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
646 WWUS85 KTWC 072051 RFWTWC URGENT - FIRE WEATHER MESSAGE National Weather Service Tucson AZ 151 PM MST Fri Apr 7 2017 AZZ151-152-081300- /O.UPG.KTWC.FW.A.0001.170408T1900Z-170409T0100Z/ /O.NEW.KTWC.FW.W.0003.170408T1900Z-170409T0200Z/ 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 Graham County-Central and Eastern Cochise County- Southern Greenlee County- Lower Elevations of the San Carlos Apache Nation in Graham County-Coronado NF-Safford BLM-TDC- 151 PM MST Fri Apr 7 2017 ...RED FLAG WARNING IN EFFECT FROM NOON TO 7 PM MST SATURDAY FOR 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 Saturday. * TIMING...The warning is in effect from Noon Saturday through 7 PM MST Saturday. * WINDS...Light southerly 20-foot winds will quickly increase during the late morning hours reaching 20-25 mph with gusts to 40 mph by early afternoon. Winds will quickly ease around and shortly after sunset. * RELATIVE HUMIDITY...Humidity levels will drop below 15 percent by 10 am and drop further to 4 to 8 percent in the afternoon. * IMPACTS...Any fires that develop or are ongoing will have the potential to spread rapidly especially in areas with a high dead grass load. * For a detailed view of the hazard area, visit weather.gov/Tucson and click on the detailed hazards tab. 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. && $$ Visit us on Facebook...Twitter...YouTube...and at weather.gov/Tucson
3 follow-up statements
688 WWUS85 KTWC 081047 RFWTWC URGENT - FIRE WEATHER MESSAGE National Weather Service Tucson AZ 347 AM MST Sat Apr 8 2017 AZZ151-152-082300- /O.CON.KTWC.FW.W.0003.170408T1900Z-170409T0200Z/ Arizona Fire Weather Zone 151 Eastern Pima County-Southeastern Pinal County- Santa Cruz County-Western Cochise County- Coronado NF-TDC-Arizona Fire Weather Zone 152 Southern Graham County-Central and Eastern Cochise County- Southern Greenlee County- Lower Elevations of the San Carlos Apache Nation in Graham County-Coronado NF-Safford BLM-TDC- 347 AM MST Sat Apr 8 2017 ...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TODAY TO 7 PM MST THIS EVENING FOR FOR STRONG WINDS, LOW RELATIVE HUMIDITY AND HIGH FIRE DANGER FOR PORTIONS OF FIRE WEATHER ZONES 151 AND 152... * TIMING...The warning is in effect from Noon through 7 PM MST today. * WINDS...Light southerly 20-foot winds will quickly increase during the late morning hours reaching 20-25 mph with gusts to 40 mph by early afternoon. Winds will quickly ease around and shortly after sunset. * RELATIVE HUMIDITY...Humidity levels will drop below 15 percent by 10 am and drop further to 4 to 8 percent in the afternoon. * IMPACTS...Any fires that develop or are ongoing will have the potential to spread rapidly, especially in areas with a high dead grass load. * For a detailed view of the hazard area, visit weather.gov/Tucson and click on the detailed hazards tab. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now...or are expected to develop. A combination of strong winds...low relative humidity...and dry vegetation will create the potential for rapid and erratic fire growth. Please advise the appropriate officials or fire crews in the field of the Red Flag Warning for portions of Southeast Arizona. && $$ Cerniglia Visit us on Facebook...Twitter...YouTube...and at weather.gov/Tucson
152 WWUS85 KTWC 082155 RFWTWC URGENT - FIRE WEATHER MESSAGE National Weather Service Tucson AZ 255 PM MST Sat Apr 8 2017 AZZ151-152-090200- /O.CON.KTWC.FW.W.0003.000000T0000Z-170409T0200Z/ 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 Graham County-Central and Eastern Cochise County- Southern Greenlee County- Lower Elevations of the San Carlos Apache Nation in Graham County-Coronado NF-Safford BLM-TDC- 255 PM MST Sat Apr 8 2017 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 7 PM MST THIS EVENING FOR FOR STRONG WINDS, LOW RELATIVE HUMIDITY AND HIGH FIRE DANGER FOR PORTIONS OF FIRE WEATHER ZONES 151 AND 152... * TIMING...The warning is in effect until 7 PM MST this evening. * WINDS...West to southwest 20-foot winds of 20 to 25 mph with gusts up to 40 mph through the early evening hours. Winds will quickly ease after sunset. * RELATIVE HUMIDITY...Humidity levels 4 to 8 percent. * IMPACTS...Any fires that develop or are ongoing will have the potential to spread rapidly, especially in areas with a high dead grass load. * For a detailed view of the hazard area, visit weather.gov/Tucson and click on the detailed hazards tab. 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. && $$ Visit us on Facebook...Twitter...YouTube...and at weather.gov/Tucson
099 WWUS85 KTWC 090202 RFWTWC URGENT - FIRE WEATHER MESSAGE National Weather Service Tucson AZ 702 PM MST Sat Apr 8 2017 AZZ151-152-090315- /O.EXP.KTWC.FW.W.0003.000000T0000Z-170409T0200Z/ Arizona Fire Weather Zone 151 Eastern Pima County-Southeastern Pinal County- Santa Cruz County-Western Cochise County- Coronado NF-TDC-Arizona Fire Weather Zone 152 Southern Graham County-Central and Eastern Cochise County- Southern Greenlee County- Lower Elevations of the San Carlos Apache Nation in Graham County-Coronado NF-Safford BLM-TDC- 702 PM MST Sat Apr 8 2017 ...RED FLAG WARNING HAS EXPIRED FOR FOR STRONG WINDS, LOW RELATIVE HUMIDITY AND HIGH FIRE DANGER FOR PORTIONS OF FIRE WEATHER ZONES 151 AND 152... The wind continued to decrease in speed this evening. Therefore, the Red Flag warning was allowed to expire at 7 PM MST. $$ 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 |
|---|---|---|---|---|
| Apr 7, 2:37 AM MST | Fire Weather Watch | TWC | Cochise, Graham, Greenlee, Pima, Pinal, Santa Cruz | 11 hr |
Nearby
Red Flag Warnings in Arizona, 2017Every red flag 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.