Alert archive / Montana / Red Flag Warnings in 2020
Red Flag Warning 4, NWS Missoula, MT
NWS Missoula, MT issued this red flag warning at Aug 22, 2020, 3:32 AM MDT for 4 counties in Montana. It took effect at Aug 22, 2020, 2:00 PM MDT. 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
- Aug 22, 2020, 3:32 AM MDT (09:32 UTC)
- In effect from
- Aug 22, 2020, 2:00 PM MDT
- Expired
- Aug 22, 2020, 9:00 PM MDT
- In force
- 7 hr
- Issued by
- NWS Missoula, MT
Counties Beaverhead County, MT, Jefferson County, MT, Madison County, MT, Silver Bow County, MT
The radar
The Missoula radar (KMSX), 200 km from the middle of the area, began a volume at 09:32 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
Great_falls, MT (KTFX), launched 00:00Z, 9.5 hours before the alert went out and 246 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
- 3387 m above ground
- 0-6 km bulk shear
- 25 kt
- 0-1 km storm-relative helicity
- 21 m²/s²
- 0-3 km storm-relative helicity
- 52 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
221 WWUS85 KMSO 220932 RFWMSO URGENT - FIRE WEATHER MESSAGE National Weather Service Missoula MT 332 AM MDT Sat Aug 22 2020 MTZ111-230300- /O.UPG.KMSO.FW.A.0003.200822T2000Z-200823T0300Z/ /O.NEW.KMSO.FW.W.0004.200822T2000Z-200823T0300Z/ East Beaverhead- 332 AM MDT Sat Aug 22 2020 ...RED FLAG WARNING IN EFFECT FROM 2 PM THIS AFTERNOON TO 9 PM MDT THIS EVENING... The Fire Weather Watch is no longer in effect. * Affected area: Fire Zone 111 (East Beaverhead). * Impacts: A dry cold front will bring a combination of gusty westerly winds, low humidity, and unstable conditions. * Winds: West 10 to 20 mph with gusts to 30 mph. * Minimum humidities: 12 to 18 percent. && $$ MTZ110-230300- /O.CON.KMSO.FW.A.0003.200822T2000Z-200823T0300Z/ Deerlodge/West Beaverhead- 332 AM MDT Sat Aug 22 2020 ...FIRE WEATHER WATCH REMAINS IN EFFECT FROM 2 PM MDT THIS AFTERNOON THROUGH THIS EVENING... * Affected area: Fire Zone 110 (Deerlodge/West Beaverhead). * Impacts: A dry cold front will produce a potentially critical combination of gusty west winds, low humidity and unstable conditions. * Winds: West 10 to 20 mph with gusts to 25 mph. * Minimum humidities: 16 to 24 percent. && $$
2 follow-up statements
078 WWUS85 KMSO 221303 RFWMSO URGENT - FIRE WEATHER MESSAGE National Weather Service Missoula MT 703 AM MDT Sat Aug 22 2020 MTZ110-221415- /O.CAN.KMSO.FW.A.0003.200822T2000Z-200823T0300Z/ Deerlodge/West Beaverhead- 703 AM MDT Sat Aug 22 2020 ...FIRE WEATHER WATCH IS CANCELLED... The National Weather Service in Missoula has cancelled the Fire Weather Watch. $$ MTZ111-230300- /O.CON.KMSO.FW.W.0004.200822T2000Z-200823T0300Z/ East Beaverhead- 703 AM MDT Sat Aug 22 2020 ...RED FLAG WARNING REMAINS IN EFFECT FROM 2 PM THIS AFTERNOON TO 9 PM MDT THIS EVENING... * Affected area: Fire Zone 111 (East Beaverhead). * Impacts: A dry cold front will bring a combination of gusty westerly winds, low humidity, and unstable conditions. * Winds: West 10 to 20 mph with gusts to 30 mph. * Minimum humidities: 12 to 18 percent. && $$
476 WWUS85 KMSO 230234 RFWMSO URGENT - FIRE WEATHER MESSAGE National Weather Service Missoula MT 834 PM MDT Sat Aug 22 2020 MTZ111-230345- /O.EXP.KMSO.FW.W.0004.000000T0000Z-200823T0300Z/ East Beaverhead- 834 PM MDT Sat Aug 22 2020 ...RED FLAG WARNING WILL EXPIRE AT 9 PM MDT THIS EVENING... * Affected area: Fire Zone 111 (East Beaverhead). && $$
Nearby
Red Flag Warnings in Montana, 2020Every red flag warning in 2020
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.