Alert archive / Montana / Red Flag Warnings in 2012
Red Flag Warning 21, NWS Glasgow, MT
NWS Glasgow, MT issued this red flag warning at Aug 25, 2012, 3:20 AM MDT for 4 counties in Montana. It took effect at Aug 25, 2012, 12:00 PM MDT. It was in force for 9 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 25, 2012, 3:20 AM MDT (09:20 UTC)
- In effect from
- Aug 25, 2012, 12:00 PM MDT
- Expired
- Aug 25, 2012, 9:00 PM MDT
- In force
- 9 hr
- Issued by
- NWS Glasgow, MT
Counties Daniels County, MT, Roosevelt County, MT, Sheridan County, MT, Valley County, MT
The radar
The Glasgow radar (KGGW), 95 km from the middle of the area, began a volume at 09:20 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
Glasgow Intl Airport, MT (KGGW), launched 00:00Z, 9.3 hours before the alert went out and 93 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
- 1 J/kg
- Mixed-layer CIN
- -245 J/kg
- Mixed-layer LCL
- 2291 m above ground
- 0-6 km bulk shear
- 77 kt
- 0-1 km storm-relative helicity
- -106 m²/s²
- 0-3 km storm-relative helicity
- 26 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
833 WWUS85 KGGW 250920 RFWGGW URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE GLASGOW MT 320 AM MDT SAT AUG 25 2012 MTZ120-252200- /O.NEW.KGGW.FW.W.0021.120825T1800Z-120826T0300Z/ FORT PECK RESERVATION-DANIELS-ROOSEVELT-SHERIDAN- 320 AM MDT SAT AUG 25 2012 ...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 9 PM MDT THIS EVENING FOR STRONG WINDS AND LOW RELATIVE HUMIDITIES FOR FIRE WEATHER ZONE 120... THE NATIONAL WEATHER SERVICE IN GLASGOW HAS ISSUED A RED FLAG WARNING FOR STRONG WINDS AND LOW RELATIVE HUMIDITIES... WHICH IS IN EFFECT FROM NOON TODAY TO 9 PM MDT THIS EVENING. * AFFECTED AREA...FIRE WEATHER ZONE 120. * WINDS...WEST 20 TO 25 MPH WITH GUSTS UP TO 35 MPH. * TIMING...WEST WINDS WILL BEGIN TO RAMP UP BY LATE MORNING... PEAK DURING THE AFTERNOON AND DIMINISH DURING THE EVENING. * RELATIVE HUMIDITY...AS LOW AS 18 PERCENT. * TEMPERATURES...IN THE UPPER 60S. * IMPACTS...THE COMBINATION OF LOW HUMIDITY... GUSTY WINDS... AND DRY FUELS WILL CREATE THE POTENTIAL FOR EXPLOSIVE FIRE GROWTH. PRECAUTIONARY/PREPAREDNESS ACTIONS... PLEASE ADVISE THE APPROPRIATE OFFICIALS OR FIRE CREWS IN THESE AREAS OF THIS RED FLAG WARNING. && $$ HTTP://WEATHER.GOV/GLASGOW
2 follow-up statements
658 WWUS85 KGGW 252038 RFWGGW URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE GLASGOW MT 238 PM MDT SAT AUG 25 2012 MTZ120-260300- /O.CON.KGGW.FW.W.0021.000000T0000Z-120826T0300Z/ FORT PECK RESERVATION-DANIELS-ROOSEVELT-SHERIDAN- 238 PM MDT SAT AUG 25 2012 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM MDT THIS EVENING FOR STRONG WINDS AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONE 120... A RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM MDT THIS EVENING. * AFFECTED AREA...FIRE WEATHER ZONE 120. * WINDS...WEST 15 TO 25 MPH WITH GUSTS UP TO 35 MPH. * TIMING...WEST WINDS PERSIST THROUGH THE AFTERNOON AND DIMINISH DURING THE EVENING. * RELATIVE HUMIDITY...AS LOW AS 19 PERCENT. * TEMPERATURES...AROUND 70. * IMPACTS...THE COMBINATION OF LOW HUMIDITY...GUSTY WINDS... AND DRY FUELS WILL CREATE THE POTENTIAL FOR EXPLOSIVE FIRE GROWTH. PRECAUTIONARY/PREPAREDNESS ACTIONS... PLEASE ADVISE THE APPROPRIATE OFFICIALS OR FIRE CREWS IN THESE AREAS OF THIS RED FLAG WARNING. && $$ HTTP://WEATHER.GOV/GLASGOW
445 WWUS85 KGGW 260251 RFWGGW URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE GLASGOW MT 851 PM MDT SAT AUG 25 2012 MTZ120-260400- /O.EXP.KGGW.FW.W.0021.000000T0000Z-120826T0300Z/ FORT PECK RESERVATION-DANIELS-ROOSEVELT-SHERIDAN- 851 PM MDT SAT AUG 25 2012 ...RED FLAG WARNING WILL EXPIRE AT 9 PM MDT THIS EVENING FOR STRONG WINDS AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONE 120... THE RED FLAG WARNING WILL EXPIRE AT 9 PM MDT THIS EVENING. AS TEMPERATURES COOL THIS EVENING...RELATIVE HUMIDITY VALUES HAVE RECOVERED SUFFICIENTLY AND WINDS HAVE LIGHTENED ENOUGH TO LET THE RED FLAG WARNING EXPIRE AS PLANNED. $$ HTTP://WEATHER.GOV/GLASGOW
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.