Alert archive / Arizona / Red Flag Warnings in 2018
Red Flag Warning 4, NWS Tucson, AZ
NWS Tucson, AZ issued this red flag warning at Mar 23, 2018, 2:57 PM MST for 6 counties in Arizona. It took effect at Mar 24, 2018, 10:00 AM MST. It was in force for 4 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
- Mar 23, 2018, 2:57 PM MST (21:57 UTC)
- In effect from
- Mar 24, 2018, 10:00 AM MST
- Expired
- Mar 24, 2018, 2:13 PM MST
- In force
- 4 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 21:57 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, 10.0 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
- 2949 m above ground
- 0-6 km bulk shear
- 68 kt
- 0-1 km storm-relative helicity
- 130 m²/s²
- 0-3 km storm-relative helicity
- 165 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
931 WWUS85 KTWC 232157 RFWTWC URGENT - FIRE WEATHER MESSAGE National Weather Service Tucson AZ 257 PM MST Fri Mar 23 2018 AZZ152-241315- /O.NEW.KTWC.FW.W.0004.180324T1700Z-180325T0100Z/ /O.NEW.KTWC.FW.A.0004.180325T1800Z-180326T0100Z/ Arizona Fire Weather Zone 152 Southern Greenlee County-Central and Eastern Cochise County- Southern Graham County-Southern San Carlos Apache Nation- 257 PM MST Fri Mar 23 2018 ...RED FLAG WARNING IN EFFECT FROM 10 M TO 6 PM MST SATURDAY FOR STRONG WINDS, LOW HUMIDITY AND HIGH FIRE DANGER FOR FIRE WEATHER ZONE 152... ...FIRE WEATHER WATCH IN EFFECT FROM SUNDAY MORNING THROUGH SUNDAY AFTERNOON FOR STRONG WINDS, LOW HUMIDITY AND HIGH FIRE DANGER FOR FIRE WEATHER ZONE 152... The National Weather Service in Tucson has issued a Red Flag Warning, which is in effect from 10 AM to 6 PM MST Saturday. a Fire Weather Watch has also been issued. This Fire Weather Watch is in effect from Sunday morning through Sunday afternoon. * AFFECTED AREA...Fire weather zone 152 for areas near and south of Interstate 10 on Saturday and mainly southeast part of Cochise county Sunday. * TIMING...The warning is from 10 am to 6 pm Saturday when the winds will exceed critical levels. The watch is in effect for Sunday afternoon * WINDS...Southwest winds will quickly increase during the late morning hours Saturday peaking around 20 to 30 mph with gusts to 45 mph. The winds will continue through the afternoon and quickly ease around or shortly after sunset. For Sunday's watch area, southwest winds of 20 to 30 mph with gusts to 45 mph are again expected in the afternoon. * RELATIVE HUMIDITY...Minimum humidity levels will reach the 12 to 20 percent range on Saturday and 6 to 12 percent range Sunday. * IMPACTS...Any fires that develop or are ongoing will have the potential to spread rapidly, especially in areas with a heavy dead grass fuel bed. * 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 Red Flag Warning for portions of Southeast Arizona. && $$ AZZ151-241315- /O.NEW.KTWC.FW.W.0004.180324T1700Z-180325T0100Z/ Arizona Fire Weather Zone 151 Eastern Pima County-Southeastern Pinal County- Santa Cruz County-Western Cochise County- Coronado NF-TDC- 257 PM MST Fri Mar 23 2018 ...RED FLAG WARNING IN EFFECT FROM 10 AM TO 6 PM MST SATURDAY FOR STRONG WINDS, LOW HUMIDITY AND HIGH FIRE DANGER FOR FIRE WEATHER ZONE 151... The National Weather Service in Tucson has issued a Red Flag Warning, which is in effect from 10 AM to 6 PM MST Saturday. * AFFECTED AREA...Fire weather zone 151 from the Santa Rita mountains south and east. * TIMING...From 10 am to 6 pm Saturday. * WINDS...Southwest winds will quickly increase during the late morning hours peaking around 20 to 30 mph with gusts to 45 mph. The winds will continue through the afternoon and quickly ease around or shortly after sunset. * RELATIVE HUMIDITY...Minimum humidity levels will reach the 12 to 20 percent range during the afternoon. * IMPACTS...Any fires that develop or are ongoing will have the potential to spread rapidly, especially in areas with a heavy dead grass fuel bed. * FOR A DETAILED VIEW OF THE HAZARD AREA...Visit weather.gov/Tucson and click on the Detailed Hazards Icon. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now...or are expected to develop. A combination of strong winds...low relative humidity...and dry vegetation will create the potential for rapid and erratic fire growth. Please advise the appropriate officials or fire crews in the field of the Red Flag Warning for portions of Southeast Arizona. && $$ Cerniglia Visit us on Facebook...Twitter...YouTube...and at weather.gov/Tucson
2 follow-up statements
916 WWUS85 KTWC 240942 RFWTWC URGENT - FIRE WEATHER MESSAGE National Weather Service Tucson AZ 242 AM MST Sat Mar 24 2018 AZZ152-242300- /O.CON.KTWC.FW.W.0004.180324T1700Z-180325T0100Z/ /O.CON.KTWC.FW.A.0004.180325T1800Z-180326T0100Z/ Arizona Fire Weather Zone 152 Southern Greenlee County-Central and Eastern Cochise County- Southern Graham County-Southern San Carlos Apache Nation- 242 AM MST Sat Mar 24 2018 ...RED FLAG WARNING REMAINS IN EFFECT FROM 10 AM THIS MORNING TO 6 PM MST THIS EVENING FOR STRONG WINDS, LOW HUMIDITY AND HIGH FIRE DANGER FOR FIRE WEATHER ZONE 152... ...FIRE WEATHER WATCH IN EFFECT FROM SUNDAY MORNING THROUGH SUNDAY AFTERNOON FOR STRONG WINDS, LOW HUMIDITY AND HIGH FIRE DANGER FOR FIRE WEATHER ZONE 152... * AFFECTED AREA...Fire weather zone 152 for areas near and south of Interstate 10 today and mainly southeast part of Cochise county Sunday. * TIMING...The warning is from 10 am to 6 pm today when the winds will exceed critical levels. The watch is in effect for Sunday afternoon. * WINDS...Southwest winds will quickly increase during the late morning hours peaking around 20 to 30 mph with gusts to 45 mph. The winds continue through the afternoon and quickly ease around or shortly after sunset. For Sunday's watch area, southwest winds of 15 to 25 mph with gusts to 35 mph are again expected in the afternoon. * RELATIVE HUMIDITY...Minimum humidity levels reach 15 to 25 percent today and 6 to 12 percent on Sunday. * IMPACTS...Any fires that develop or are ongoing will have the potential to spread rapidly, especially in areas with a heavy dead grass fuel bed. * 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 Red Flag Warning for portions of Southeast Arizona. && $$ AZZ151-242300- /O.CON.KTWC.FW.W.0004.180324T1700Z-180325T0100Z/ Arizona Fire Weather Zone 151 Eastern Pima County-Southeastern Pinal County- Santa Cruz County-Western Cochise County- Coronado NF-TDC- 242 AM MST Sat Mar 24 2018 ...RED FLAG WARNING REMAINS IN EFFECT FROM 10 AM THIS MORNING TO 6 PM MST THIS EVENING FOR STRONG WINDS, LOW HUMIDITY AND HIGH FIRE DANGER FOR FIRE WEATHER ZONE 151... * AFFECTED AREA...Fire weather zone 151 from the Santa Rita mountains south and east. * TIMING...From 10 am to 6 pm today. * WINDS...Southwest winds will quickly increase during the late morning hours peaking around 20 to 30 mph with gusts to 45 mph. The winds continue through the afternoon and quickly ease around or shortly after sunset. * RELATIVE HUMIDITY...Minimum humidity levels reach 15 to 25 percent during the afternoon. * IMPACTS...Any fires that develop or are ongoing will have the potential to spread rapidly, especially in areas with a heavy dead grass fuel bed. * FOR A DETAILED VIEW OF THE HAZARD AREA...Visit weather.gov/Tucson and click on the Detailed Hazards Icon. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now...or are expected to develop. A combination of strong winds...low relative humidity...and dry vegetation will create the potential for rapid and erratic fire growth. Please advise the appropriate officials or fire crews in the field of the Red Flag Warning for portions of Southeast Arizona. && $$ Visit us on Facebook...Twitter...YouTube...and at weather.gov/Tucson
201 WWUS85 KTWC 242113 RFWTWC URGENT - FIRE WEATHER MESSAGE National Weather Service Tucson AZ 213 PM MST Sat Mar 24 2018 AZZ152-250600- /O.CAN.KTWC.FW.W.0004.000000T0000Z-180325T0100Z/ /O.CON.KTWC.FW.A.0004.180325T1800Z-180326T0100Z/ Arizona Fire Weather Zone 152 Southern Greenlee County-Central and Eastern Cochise County- Southern Graham County-Southern San Carlos Apache Nation- 213 PM MST Sat Mar 24 2018 ...FIRE WEATHER WATCH REMAINS IN EFFECT FROM SUNDAY MORNING THROUGH SUNDAY AFTERNOON FOR STRONG WINDS, LOW HUMIDITY AND A HIGH FIRE DANGER FOR PORTIONS OF FIRE WEATHER ZONE 152... ...RED FLAG WARNING IS CANCELLED FOR THE REST OF TODAY FOR FIRE WEATHER ZONE 152... The National Weather Service in Tucson has cancelled the Red Flag Warning today. While very strong winds will continue through the evening hours tonight, relative humidity values are well above critical fire weather thresholds, in the 20 to 30 percent range at most locations. Light rainfall moving into this area will continue to increase relative humidity values this afternoon. * AFFECTED AREA...Fire Weather Watch for portions of fire weather zone 152. * TIMING...The watch is in effect late Sunday morning and afternoon. * WINDS...On Sunday, expect southwest winds of 15 to 25 mph with gusts to near 35 mph. * RELATIVE HUMIDITY...Minimum humidity levels will lower to 6 to 12 percent on Sunday. * IMPACTS...Any fires that develop or are ongoing will have the potential to spread rapidly, especially in areas with a heavy dead grass fuel bed. * 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. && $$ AZZ151-242215- /O.CAN.KTWC.FW.W.0004.000000T0000Z-180325T0100Z/ Arizona Fire Weather Zone 151 Eastern Pima County-Southeastern Pinal County- Santa Cruz County-Western Cochise County- Coronado NF-TDC- 213 PM MST Sat Mar 24 2018 ...RED FLAG WARNING IS CANCELLED FOR THE REST OF TODAY FOR FIRE WEATHER ZONE 151... The National Weather Service in Tucson has cancelled the Red Flag Warning today. While very strong winds will continue through the evening hours tonight, relative humidity values are well above critical fire weather thresholds, in the 20 to 30 percent range at most locations. Light rainfall moving into this area will continue to increase relative humidity values this afternoon. $$ 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 |
|---|---|---|---|---|
| Mar 23, 2:57 PM MST | Fire Weather Watch | TWC | Cochise, Graham, Greenlee, Pinal | 35 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.