Alert archive / Montana / Red Flag Warnings in 2021
Red Flag Warning 16, NWS Missoula, MT
NWS Missoula, MT issued this red flag warning at Sep 5, 2021, 8:35 PM MDT for 7 counties in Montana. It took effect at Sep 6, 2021, 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
- Sep 5, 2021, 8:35 PM MDT (02:35 UTC)
- In effect from
- Sep 6, 2021, 2:00 PM MDT
- Expired
- Sep 6, 2021, 9:00 PM MDT
- In force
- 7 hr
- Issued by
- NWS Missoula, MT
Counties Beaverhead County, MT, Deer Lodge County, MT, Granite County, MT, Jefferson County, MT, Madison County, MT, Powell County, MT, Silver Bow County, MT
The radar
The Missoula radar (KMSX), 154 km from the middle of the area, began a volume at 02:39 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, 2.6 hours before the alert went out and 231 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
- 3646 m above ground
- 0-6 km bulk shear
- 19 kt
- 0-1 km storm-relative helicity
- 22 m²/s²
- 0-3 km storm-relative helicity
- 77 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
999 WWUS85 KMSO 060235 RFWMSO URGENT - FIRE WEATHER MESSAGE National Weather Service Missoula MT 835 PM MDT Sun Sep 5 2021 MTZ110-111-070300- /O.EXP.KMSO.FW.W.0015.000000T0000Z-210906T0300Z/ /O.UPG.KMSO.FW.A.0006.210906T2000Z-210907T0300Z/ /O.NEW.KMSO.FW.W.0016.210906T2000Z-210907T0300Z/ Deerlodge/West Beaverhead-East Beaverhead- 835 PM MDT Sun Sep 5 2021 ...RED FLAG WARNING IN EFFECT FROM 2 PM TO 9 PM MDT MONDAY... ...RED FLAG WARNING WILL EXPIRE AT 9 PM MDT THIS EVENING... The Fire Weather Watch is no longer in effect. * Affected area: Fire Zone 110 (Deerlodge/West Beaverhead). Fire Zone 111 (East Beaverhead). * Impacts: For Tonight: Critical fire weather conditions will diminish overnight as winds decrease with some Rh recovery. For Monday: A combination of gusty winds and low humidities will produce critical fire weather conditions once again Monday afternoon through early evening, especially east of the Continental Divide. * Winds: West winds 20-25 mph with gusts in higher terrain up to 35 mph. * Minimum humidities: 9-16 percent && $$
1 follow-up statement
098 WWUS85 KMSO 070241 RFWMSO URGENT - FIRE WEATHER MESSAGE National Weather Service Missoula MT 841 PM MDT Mon Sep 6 2021 MTZ110-111-070345- /O.EXP.KMSO.FW.W.0016.000000T0000Z-210907T0300Z/ Deerlodge/West Beaverhead-East Beaverhead- 841 PM MDT Mon Sep 6 2021 ...RED FLAG WARNING WILL EXPIRE AT 9 PM MDT THIS EVENING... * Affected area: Fire Zone 110 (Deerlodge/West Beaverhead). Fire Zone 111 (East Beaverhead). * Impacts: Critical fire weather conditions will diminish overnight as winds decrease with some Rh recovery. && $$
Nearby
Red Flag Warnings in Montana, 2021Every red flag warning in 2021
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.