Alert archive / Montana / Red Flag Warnings in 2017
Red Flag Warning 15, NWS Missoula, MT
NWS Missoula, MT issued this red flag warning at Sep 11, 2017, 2:24 PM MDT for 7 counties in Montana. It took effect at Sep 12, 2017, 12:00 PM MDT. It was in force for 11 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 11, 2017, 2:24 PM MDT (20:24 UTC)
- In effect from
- Sep 12, 2017, 12:00 PM MDT
- Expired
- Sep 12, 2017, 10:51 PM MDT
- In force
- 11 hr
- Issued by
- NWS Missoula, MT
Counties Flathead County, MT, Glacier County, MT, Lake County, MT, Lincoln County, MT, Missoula County, MT, Powell County, MT, Sanders County, MT
The radar
The Missoula radar (KMSX), 87 km from the middle of the area, began a volume at 20:21 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, 8.4 hours before the alert went out and 174 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
- 1945 m above ground
- 0-6 km bulk shear
- 24 kt
- 0-1 km storm-relative helicity
- -14 m²/s²
- 0-3 km storm-relative helicity
- 69 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
811 WWUS85 KMSO 112024 RFWMSO URGENT - FIRE WEATHER MESSAGE National Weather Service Missoula MT 224 PM MDT Mon Sep 11 2017 MTZ104-105-122030- /O.NEW.KMSO.FW.W.0015.170912T1800Z-170913T0600Z/ /O.CON.KMSO.FW.W.0014.000000T0000Z-170912T0600Z/ Kootenai-Flathead/Glacier Park- 224 PM MDT Mon Sep 11 2017 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL MIDNIGHT MDT TONIGHT... ...RED FLAG WARNING IN EFFECT FROM NOON TUESDAY TO MIDNIGHT MDT TUESDAY NIGHT... * Affected area: Fire Zone 104 (Kootenai). Fire Zone 105 (Flathead/Glacier Park). * Impacts: A dry airmass moving in today combined with the gusty winds will create critical fire conditions across midslopes and ridgetops this afternoon and evening...and again on Tuesday afternoon and evening. The strongest winds will mainly be north of the Highway 2 corridor. Winds and humidities will be slow to improve, thus critical fire conditions are expected well into the evening. * Winds: West-southwest 15 to 25 mph, gusting to 35 mph across midslopes and ridgetops. * Minimum Humidities: 10 to 20 percent. && $$
5 follow-up statements
045 WWUS85 KMSO 120558 RFWMSO URGENT - FIRE WEATHER MESSAGE National Weather Service Missoula MT 1158 PM MDT Mon Sep 11 2017 MTZ104-105-130600- /O.EXP.KMSO.FW.W.0014.000000T0000Z-170912T0600Z/ /O.CON.KMSO.FW.W.0015.170912T1800Z-170913T0600Z/ Kootenai-Flathead/Glacier Park- 1158 PM MDT Mon Sep 11 2017 ...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TUESDAY TO MIDNIGHT MDT TUESDAY NIGHT FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONES 104 AND 105... ...RED FLAG WARNING WILL EXPIRE AT MIDNIGHT MDT TONIGHT FOR FIRE WEATHER ZONES 104 AND 105... * Impacts: A dry airmass moving in today combined with the gusty winds will create critical fire conditions across midslopes and ridgetops this afternoon and evening...and again on Tuesday afternoon and evening. The strongest winds will mainly be north of the Highway 2 corridor. Winds and humidities will be slow to improve, thus critical fire conditions are expected well into the evening. * Winds: West-southwest 15 to 25 mph, gusting to 35 mph across midslopes and ridgetops. * Minimum Humidities: 10 to 20 percent. && $$
209 WWUS85 KMSO 120925 RFWMSO URGENT - FIRE WEATHER MESSAGE National Weather Service Missoula MT 325 AM MDT Tue Sep 12 2017 MTZ104-105-130600- /O.CON.KMSO.FW.W.0015.170912T1800Z-170913T0600Z/ Kootenai-Flathead/Glacier Park- 325 AM MDT Tue Sep 12 2017 ...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TODAY TO MIDNIGHT MDT TONIGHT... ...RED FLAG WARNING WILL EXPIRE AT MIDNIGHT MDT TONIGHT FOR FIRE WEATHER ZONES 104 AND 105... * Impacts: Breezy westerly winds and low humidity will combine to create Red Flag conditions this afternoon and evening. Winds and humidities will be slow to improve, thus critical fire conditions are expected well into the evening. * Winds: West-southwest 15 to 25 mph, gusting to 35 mph mainly for midslopes and ridgetops. * Minimum Humidities: 10 to 20 percent. && $$
976 WWUS85 KMSO 120929 AAB RFWMSO URGENT - FIRE WEATHER MESSAGE...UPDATED National Weather Service Missoula MT 329 AM MDT Tue Sep 12 2017 MTZ104-105-130600- /O.CON.KMSO.FW.W.0015.170912T1800Z-170913T0600Z/ Kootenai-Flathead/Glacier Park- 329 AM MDT Tue Sep 12 2017 ...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TODAY TO MIDNIGHT MDT TONIGHT... * Impacts: Breezy westerly winds and low humidity will combine to create Red Flag conditions this afternoon and evening. Winds and humidities will be slow to improve, thus critical fire conditions are expected well into the evening. * Winds: West-southwest 15 to 25 mph, gusting to 35 mph mainly for midslopes and ridgetops. * Minimum Humidities: 10 to 20 percent. && $$
542 WWUS85 KMSO 122002 RFWMSO URGENT - FIRE WEATHER MESSAGE National Weather Service Missoula MT 202 PM MDT Tue Sep 12 2017 MTZ108>111-132015- /O.NEW.KMSO.FW.W.0016.170913T2100Z-170914T0200Z/ East Lolo-Bitterroot-Deerlodge/West Beaverhead-East Beaverhead- 202 PM MDT Tue Sep 12 2017 ...RED FLAG WARNING IN EFFECT FROM 3 PM TO 8 PM MDT WEDNESDAY for Wind and Dry Conditions... * Affected area: Fire Zone 108 (East Lolo). Fire Zone 109 (Bitterroot). Fire Zone 110 (Deerlodge/West Beaverhead). Fire Zone 111 (East Beaverhead). * Impacts: A combination of stronger northwest winds and moderately low RH will create an extreme fire weather period from mid afternoon Wednesday through early evening across much of southwest Montana. * Winds: West to northwest winds will increase to 15 to 25 mph by mid afternoon and continue through the evening. * Minimum humidities: RH will fall to 15 to 20 percent in the valleys and 20 to 25 percent in the terrain. The lowest RH will only persist into early evening with values increasing significantly through the remainder of the night. && $$ MTZ104-105-130600- /O.CON.KMSO.FW.W.0015.000000T0000Z-170913T0600Z/ Kootenai-Flathead/Glacier Park- 202 PM MDT Tue Sep 12 2017 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL MIDNIGHT MDT TONIGHT... * Impacts: Breezy westerly winds and low humidity will combine to create Red Flag conditions this afternoon and evening. Winds and humidities will be slow to improve, thus critical fire conditions are expected well into the evening. * Winds: West-southwest 15 to 25 mph, gusting to 35 mph mainly for midslopes and ridgetops. * Minimum Humidities: 10 to 20 percent. && $$
272 WWUS85 KMSO 130451 RFWMSO URGENT - FIRE WEATHER MESSAGE National Weather Service Missoula MT 1051 PM MDT Tue Sep 12 2017 MTZ104-105-130600- /O.CAN.KMSO.FW.W.0015.000000T0000Z-170913T0600Z/ Kootenai-Flathead/Glacier Park- 1051 PM MDT Tue Sep 12 2017 ...RED FLAG WARNING IS CANCELLED... The National Weather Service in Missoula has cancelled the Red Flag Warning. Humidities have improved and winds are gradually decreasing, thus critical fire weather conditions are no longer expected. $$ MTZ108>111-140200- /O.CON.KMSO.FW.W.0016.170913T2100Z-170914T0200Z/ East Lolo-Bitterroot-Deerlodge/West Beaverhead-East Beaverhead- 1051 PM MDT Tue Sep 12 2017 ...RED FLAG WARNING REMAINS IN EFFECT FROM 3 PM TO 8 PM MDT WEDNESDAY... * Affected area: Fire Zone 108 (East Lolo). Fire Zone 109 (Bitterroot). Fire Zone 110 (Deerlodge/West Beaverhead). Fire Zone 111 (East Beaverhead). * Impacts: A combination of stronger northwest winds and moderately low RH will create an extreme fire weather period from mid afternoon Wednesday through early evening across much of southwest Montana. * Winds: West to northwest winds will increase to 15 to 25 mph by mid afternoon and continue through the evening. * Minimum humidities: RH will fall to 15 to 20 percent in the valleys and 20 to 25 percent in the terrain. The lowest RH will only persist into early evening with values increasing significantly through the remainder of the night. && $$
The office that day
Everything else NWS Missoula, MT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 11, 2:53 AM MDT | Red Flag Warning | MSO | Flathead, Glacier, Lake, Lincoln, Missoula, Powell and 1 more | 21 hr |
Nearby
Red Flag Warnings in Montana, 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.