Alert archive / Montana / Red Flag Warnings in 2012
Red Flag Warning 4, NWS Great Falls, MT
NWS Great Falls, MT issued this red flag warning at Mar 11, 2012, 2:33 PM MDT for 9 counties in Montana. It was in force for 5 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 11, 2012, 2:33 PM MDT (20:33 UTC)
- Expired
- Mar 11, 2012, 7:06 PM MDT
- In force
- 5 hr
- Issued by
- NWS Great Falls, MT
Counties Broadwater County, MT, Cascade County, MT, Chouteau County, MT, Fergus County, MT, Gallatin County, MT, Jefferson County, MT, Judith Basin County, MT, Lewis and Clark County, MT, Meagher County, MT
The radar
The Great Falls radar (KTFX), 78 km from the middle of the area, began a volume at 20:38 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 12:00Z, 8.6 hours before the alert went out and 80 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
- 2301 m above ground
- 0-6 km bulk shear
- 40 kt
- 0-1 km storm-relative helicity
- 14 m²/s²
- 0-3 km storm-relative helicity
- 59 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
172 WWUS85 KTFX 112033 RFWTFX URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE GREAT FALLS MT 233 PM MDT SUN MAR 11 2012 MTZ117-118-120200- /O.NEW.KTFX.FW.W.0004.120311T2033Z-120312T0200Z/ CENTRAL AND EASTERN LEWIS AND CLARK NATIONAL FOREST AREAS- HELENA AND TOWNSEND RANGER DISTRICTS OF THE HELENA NATIONAL FOREST- 233 PM MDT SUN MAR 11 2012 ...RED FLAG WARNING IN EFFECT UNTIL 8 PM MDT THIS EVENING FOR GUSTY WINDS AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 117 AND 118 BELOW 5000 FEET... THE NATIONAL WEATHER SERVICE IN GREAT FALLS HAS ISSUED A RED FLAG WARNING BELOW 5000 FEET FOR GUSTY WINDS AND LOW RELATIVE HUMIDITY...WHICH IS IN EFFECT UNTIL 8 PM MDT THIS EVENING. * AFFECTED AREA...FIRE WEATHER ZONES 117 BELOW 5000 FEET AND 118 BELOW 5000 FEET. * WINDS...SOUTHWEST 15 TO 25 MPH WITH GUSTS UP TO 35 MPH. WINDS WILL SHIFT AND BECOME WESTERLY WITH A FRONTAL PASSAGE AFTER 6PM MDT. * RELATIVE HUMIDITY...AS LOW AS 15 PERCENT. * IMPACTS....BRIEF ISOLATED THUNDERSTORMS ARE POSSIBLE THIS EVENING. THIS WARNING IS PRIMARILY FOR GRASSLAND AREAS FREE OF SNOW COVER. THE COMBINATION OF FORECAST CONDITIONS AND DRY FUEL MAY RESULT IN QUICKLY SPREADING GRASS FIRES. PRECAUTIONARY/PREPAREDNESS ACTIONS... PLEASE ADVISE THE APPROPRIATE OFFICIALS OR FIRE CREWS IN THESE AREAS OF THIS RED FLAG WARNING. && $$ MTZ115-120200- /O.NEW.KTFX.FW.W.0004.120311T2033Z-120312T0200Z/ CHOUTEAU AND FERGUS COUNTIES- 233 PM MDT SUN MAR 11 2012 ...RED FLAG WARNING IN EFFECT UNTIL 8 PM MDT THIS EVENING FOR GUSTY WINDS AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONE 115 ABOVE 5000 FEET... THE NATIONAL WEATHER SERVICE IN GREAT FALLS HAS ISSUED A RED FLAG WARNING ABOVE 5000 FEET FOR GUSTY WINDS AND LOW RELATIVE HUMIDITY...WHICH IS IN EFFECT UNTIL 8 PM MDT THIS EVENING. * AFFECTED AREA...FIRE WEATHER ZONE 115 ABOVE 5000 FEET. * WINDS...SOUTHWEST AROUND 20 MPH WITH GUSTS UP TO 35 MPH. WINDS WILL SHIFT AND BECOME WESTERLY WITH A FRONTAL PASSAGE AFTER 6PM MDT. * RELATIVE HUMIDITY...AS LOW AS 15 PERCENT. * IMPACTS....THIS WARNING IS PRIMARILY FOR GRASSLAND AREAS FREE OF SNOW COVER. THE COMBINATION OF FORECAST CONDITIONS AND DRY FUEL MAY RESULT IN QUICKLY SPREADING GRASS FIRES. PRECAUTIONARY/PREPAREDNESS ACTIONS... PLEASE ADVISE THE APPROPRIATE OFFICIALS OR FIRE CREWS IN THESE AREAS OF THIS RED FLAG WARNING. && $$ HTTP://WEATHER.GOV/GREATFALLS
1 follow-up statement
108 WWUS85 KTFX 120106 RFWTFX URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE GREAT FALLS MT 706 PM MDT SUN MAR 11 2012 MTZ115-117-118-120215- /O.CAN.KTFX.FW.W.0004.000000T0000Z-120312T0200Z/ CHOUTEAU AND FERGUS COUNTIES- CENTRAL AND EASTERN LEWIS AND CLARK NATIONAL FOREST AREAS- HELENA AND TOWNSEND RANGER DISTRICTS OF THE HELENA NATIONAL FOREST- 706 PM MDT SUN MAR 11 2012 ...RED FLAG WARNING IS CANCELLED FOR GUSTY WINDS AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 115...117 AND 118... THE NATIONAL WEATHER SERVICE IN GREAT FALLS HAS CANCELLED THE RED FLAG WARNING. RELATIVE HUMIDITIES WILL CONTINUE TO RECOVER AS PACIFIC MOISTURE INCREASES ALONG A COOL FRONT. GUSTY WINDS ARE STILL POSSIBLE THIS EVENING IN THE VICINITY OF SHOWERS BUT THESE WILL GRADUALLY DECREASE WITHIN THE NEXT FEW HOURS. $$ HTTP://WEATHER.GOV/GREATFALLS
Nearby
Red Flag Warnings in Montana, 2012Every red flag warning in 2012
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.