Alert archive / Montana / Red Flag Warnings in 2021
Red Flag Warning 8, NWS Missoula, MT
NWS Missoula, MT issued this red flag warning at Jul 18, 2021, 12:04 PM PDT for Clearwater County, Idaho County, Idaho; 15 counties in Montana. It took effect at Jul 19, 2021, 11:00 AM PDT. It was in force for 12 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
- Jul 18, 2021, 12:04 PM PDT (19:04 UTC)
- In effect from
- Jul 19, 2021, 11:00 AM PDT
- Expired
- Jul 19, 2021, 11:00 PM PDT
- In force
- 12 hr
- Issued by
- NWS Missoula, MT
Counties Clearwater County, ID, Idaho County, ID, Beaverhead County, MT, Deer Lodge County, MT, Flathead County, MT, Glacier County, MT, Granite County, MT, Jefferson County, MT, Lake County, MT, Lewis and Clark County, MT, Madison County, MT, Mineral County, MT, Missoula County, MT, Powell County, MT, Ravalli County, MT, Sanders County, MT, Silver Bow County, MT
The radar
The Missoula radar (KMSX), 46 km from the middle of the area, began a volume at 19:09 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
Spokane, WA (KOTX), launched 12:00Z, 7.1 hours before the alert went out and 236 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
- 3089 m above ground
- 0-6 km bulk shear
- 40 kt
- 0-1 km storm-relative helicity
- 11 m²/s²
- 0-3 km storm-relative helicity
- 62 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
483 WWUS85 KMSO 181904 RFWMSO URGENT - FIRE WEATHER MESSAGE National Weather Service Missoula MT 104 PM MDT Sun Jul 18 2021 IDZ103-MTZ106-108-109-191915- /O.NEW.KMSO.FW.W.0008.210719T1800Z-210720T0300Z/ Clearwater/Nez Perce-West Lolo-East Lolo-Bitterroot- 104 PM MDT Sun Jul 18 2021 /1204 PM PDT Sun Jul 18 2021/ ...RED FLAG WARNING IN EFFECT FROM NOON MDT /11 AM PDT/ TO 9 PM MDT /8 PM PDT/ MONDAY... * Affected area: Fire Zone 103 (Clearwater/Nez Perce). Fire Zone 106 (West Lolo). Fire Zone 108 (East Lolo). Fire Zone 109 (Bitterroot). * Impacts: Gusty and erratic outflows developing from high based scattered thunderstorms and frequent lightning. * Thunderstorms: Mainly dry, with some rain under the cores. * Outflow Winds: 35-50 mph. && $$ MTZ110-111-191915- /O.NEW.KMSO.FW.W.0008.210719T1800Z-210720T0600Z/ Deerlodge/West Beaverhead-East Beaverhead- 104 PM MDT Sun Jul 18 2021 ...RED FLAG WARNING IN EFFECT FROM NOON MONDAY TO MIDNIGHT MDT MONDAY NIGHT... * Affected area: Fire Zone 110 (Deerlodge/West Beaverhead). Fire Zone 111 (East Beaverhead). * Impacts: Gusty and erratic outflows developing from high based scattered thunderstorms and frequent lightning. * Thunderstorms: Both dry and wet dry. * Outflow Winds: 40-50 mph. && $$
1 follow-up statement
725 WWUS85 KMSO 190939 RFWMSO URGENT - FIRE WEATHER MESSAGE National Weather Service Missoula MT 339 AM MDT Mon Jul 19 2021 MTZ105-107-200300- /O.EXA.KMSO.FW.W.0008.210719T1800Z-210720T0300Z/ Flathead/Glacier Park-Salish and Kootenai Reservation- 339 AM MDT Mon Jul 19 2021 ...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 9 PM MDT THIS EVENING... * Affected area: Fire Zone 105 (Flathead/Glacier Park). Fire Zone 107 (Salish and Kootenai Reservation). * Impacts: Gusty and erratic outflows developing from high based scattered thunderstorms and frequent lightning. * Thunderstorms: Mainly dry, with some rain under the cores. * Outflow Winds: 35-50 mph. && $$ IDZ103-MTZ106-108-109-200300- /O.CON.KMSO.FW.W.0008.210719T1800Z-210720T0300Z/ Clearwater/Nez Perce-West Lolo-East Lolo-Bitterroot- 339 AM MDT Mon Jul 19 2021 /239 AM PDT Mon Jul 19 2021/ ...RED FLAG WARNING REMAINS IN EFFECT FROM NOON MDT /11 AM PDT/ TODAY TO 9 PM MDT /8 PM PDT/ THIS EVENING... * Affected area: Fire Zone 103 (Clearwater/Nez Perce). Fire Zone 106 (West Lolo). Fire Zone 108 (East Lolo). Fire Zone 109 (Bitterroot). * Impacts: Gusty and erratic outflows developing from high based scattered thunderstorms and frequent lightning. * Thunderstorms: Mainly dry, with some rain under the cores. * Outflow Winds: 35-50 mph. && $$ MTZ110-111-200600- /O.CON.KMSO.FW.W.0008.210719T1800Z-210720T0600Z/ Deerlodge/West Beaverhead-East Beaverhead- 339 AM MDT Mon Jul 19 2021 ...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TODAY TO MIDNIGHT MDT TONIGHT... * Affected area: Fire Zone 110 (Deerlodge/West Beaverhead). Fire Zone 111 (East Beaverhead). * Impacts: Gusty and erratic outflows developing from high based scattered thunderstorms and frequent lightning. * Thunderstorms: Both dry and wet dry. * Outflow Winds: 40-50 mph. && $$
Nearby
Red Flag Warnings in Montana, 2021Red Flag Warnings in Idaho, 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.