Alert archive / Montana / Red Flag Warnings in 2021
Red Flag Warning 21, NWS Glasgow, MT
NWS Glasgow, MT issued this red flag warning at Jul 18, 2021, 1:52 PM MDT for 12 counties in Montana. It took effect at Jul 19, 2021, 12:00 PM MDT. It was in force for 10 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, 1:52 PM MDT (19:52 UTC)
- In effect from
- Jul 19, 2021, 12:00 PM MDT
- Expired
- Jul 19, 2021, 10:26 PM MDT
- In force
- 10 hr
- Issued by
- NWS Glasgow, MT
Counties Daniels County, MT, Dawson County, MT, Garfield County, MT, McCone County, MT, Petroleum County, MT, Phillips County, MT, Prairie County, MT, Richland County, MT, Roosevelt County, MT, Sheridan County, MT, Valley County, MT, Wibaux County, MT
The radar
The Glasgow radar (KGGW), 77 km from the middle of the area, began a volume at 19:56 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 12:00Z, 7.9 hours before the alert went out and 76 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
- 3320 m above ground
- 0-6 km bulk shear
- 16 kt
- 0-1 km storm-relative helicity
- 72 m²/s²
- 0-3 km storm-relative helicity
- 128 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
000 WWUS85 KGGW 181952 RFWGGW URGENT - FIRE WEATHER MESSAGE National Weather Service Glasgow MT 152 PM MDT Sun Jul 18 2021 ...FIRE WEATHER CONCERNS FOR MONDAY... .A combination of gusty winds, low relative humidity, very hot temperatures, and dry vegetation could make for dangerous fire weather conditions on Monday. MTZ122-134>137-190800- /O.UPG.KGGW.FW.A.0015.210719T1800Z-210720T0600Z/ /O.NEW.KGGW.FW.W.0021.210719T1800Z-210720T0600Z/ Dawson/McCone/Prairie/Richland/Wibaux Counties- Northern Valley and Northern Phillips Counties-The Little Rockies- The Lower Missouri River Breaks including the Charles M Russell National Wildlife Refuge- Southern Petroleum and Southern Garfield Counties- 152 PM MDT Sun Jul 18 2021 ...RED FLAG WARNING IN EFFECT FROM NOON MONDAY TO MIDNIGHT MDT MONDAY NIGHT FOR HOT TEMPERATURES AND LOW HUMIDITIES FOR FIRE WEATHER ZONES 122, 134, 135, 136, AND 137... The National Weather Service in Glasgow has issued a Red Flag Warning for very hot temperatures, dry vegetation and low humidities, which is in effect from noon Monday to midnight MDT Monday night. The Fire Weather Watch is no longer in effect. * AFFECTED AREA...Fire Weather Zones 122, 134, 135, 136 and 137. * TIMING...Monday afternoon until midnight. * WINDS...Southeast 10 to 20 mph with gusts up to 40 mph. * RELATIVE HUMIDITY...As low as 11 percent. * TEMPERATURES...Highs 98 to 110. * IMPACTS...The heat wave has made all vegetation dry and prone to easily burn. Any fire start would quickly spread toward the northwest. PRECAUTIONARY/PREPAREDNESS ACTIONS... Please advise the appropriate officials or fire crews in these areas of this Red Flag Warning. && $$ MTZ120-190800- /O.NEW.KGGW.FW.W.0021.210719T1800Z-210720T0600Z/ Fort Peck Reservation and Daniels/Roosevelt/Sheridan Counties- 152 PM MDT Sun Jul 18 2021 ...RED FLAG WARNING IN EFFECT FROM NOON MONDAY TO MIDNIGHT MDT MONDAY NIGHT FOR HOT TEMPERATURES AND LOW HUMIDITIES FOR FIRE WEATHER ZONE 120... The National Weather Service in Glasgow has issued a Red Flag Warning for very hot temperatures, dry vegetation and low humidities, which is in effect from noon Monday to midnight MDT Monday night. * AFFECTED AREA...Fire Weather Zone 120. * TIMING...Monday afternoon until midnight. * WINDS...Southeast 10 to 20 mph with gusts up to 40 mph. * RELATIVE HUMIDITY...As low as 15 percent. * TEMPERATURES...Highs 98 to 110. * IMPACTS...The heat wave has made all vegetation dry and prone to easily burn. Any fire start would quickly spread toward the northwest. PRECAUTIONARY/PREPAREDNESS ACTIONS... Please advise the appropriate officials or fire crews in these areas of this Red Flag Warning. && $$ http://www.weather.gov/glasgow
3 follow-up statements
062 WWUS85 KGGW 190941 RFWGGW URGENT - FIRE WEATHER MESSAGE National Weather Service Glasgow MT 341 AM MDT Mon Jul 19 2021 ...CRITICAL FIRE WEATHER CONDITIONS TODAY... .The combination of gusty winds, low relative humidity, very hot temperatures, and dry vegetation will make for dangerous fire weather conditions today. MTZ120-122-134>137-192200- /O.CON.KGGW.FW.W.0021.210719T1800Z-210720T0600Z/ Fort Peck Reservation and Daniels/Roosevelt/Sheridan Counties- Dawson/McCone/Prairie/Richland/Wibaux Counties- Northern Valley and Northern Phillips Counties-The Little Rockies- The Lower Missouri River Breaks including the Charles M Russell National Wildlife Refuge- Southern Petroleum and Southern Garfield Counties- 341 AM MDT Mon Jul 19 2021 ...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TODAY TO MIDNIGHT MDT TONIGHT FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONES 120, 122, 134, 135, 136, AND 137... * AFFECTED AREA...All of northeast Montana. * TIMING...this afternoon until midnight. * WINDS...Southeast 15 to 20 mph with gusts up to 30 mph. * RELATIVE HUMIDITY...As low as 9 percent. * TEMPERATURES...97 to 110. * IMPACTS...The heat wave has made all vegetation dry and prone to easily burn. Any fire start would quickly spread toward the northwest. PRECAUTIONARY/PREPAREDNESS ACTIONS... Please advise the appropriate officials or fire crews in these areas of this Red Flag Warning. && $$ http://www.weather.gov/glasgow
494 WWUS85 KGGW 192014 RFWGGW URGENT - FIRE WEATHER MESSAGE National Weather Service Glasgow MT 214 PM MDT Mon Jul 19 2021 ...CRITICAL FIRE WEATHER CONDITIONS TODAY... .The combination of gusty winds, low relative humidity, very hot temperatures, and dry vegetation will make for dangerous fire weather conditions today. MTZ120-122-134>137-200600- /O.CON.KGGW.FW.W.0021.000000T0000Z-210720T0600Z/ Fort Peck Reservation and Daniels/Roosevelt/Sheridan Counties- Dawson/McCone/Prairie/Richland/Wibaux Counties- Northern Valley and Northern Phillips Counties-The Little Rockies- The Lower Missouri River Breaks including the Charles M Russell National Wildlife Refuge- Southern Petroleum and Southern Garfield Counties- 214 PM MDT Mon Jul 19 2021 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL MIDNIGHT MDT TONIGHT FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONES 120, 122, 134, 135, 136, AND 137... * AFFECTED AREA...Fire Weather Zones 120, 122, 134, 135, 136 and 137. * TIMING...through midnight. * WINDS...Southeast 10 to 15 mph with gusts up to 30 mph. * RELATIVE HUMIDITY...As low as 9 percent. * TEMPERATURES...97 to 110. * IMPACTS...The heat wave has made all vegetation dry and prone to easily burn. Any fire start would quickly spread toward the northwest. PRECAUTIONARY/PREPAREDNESS ACTIONS... Please advise the appropriate officials or fire crews in these areas of this Red Flag Warning. && $$ http://www.weather.gov/glasgow
799 WWUS85 KGGW 200426 RFWGGW URGENT - FIRE WEATHER MESSAGE National Weather Service Glasgow MT 1026 PM MDT Mon Jul 19 2021 MTZ120-122-134>137-200530- /O.CAN.KGGW.FW.W.0021.000000T0000Z-210720T0600Z/ Fort Peck Reservation and Daniels/Roosevelt/Sheridan Counties- Dawson/McCone/Prairie/Richland/Wibaux Counties- Northern Valley and Northern Phillips Counties-The Little Rockies- The Lower Missouri River Breaks including the Charles M Russell National Wildlife Refuge- Southern Petroleum and Southern Garfield Counties- 1026 PM MDT Mon Jul 19 2021 ...RED FLAG WARNING IS CANCELLED FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONES 120, 122, 134, 135, 136, AND 137... The National Weather Service in Glasgow has cancelled the Red Flag Warning. Temperatures are rapidly dropping across the area and winds have tapered opff allowing the Red Flag Warning to be cancelled. $$ http://www.weather.gov/glasgow
The office that day
Everything else NWS Glasgow, MT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 18, 3:26 AM MDT | Fire Weather Watch | GGW | Dawson, Garfield, McCone, Petroleum, Phillips, Prairie and 3 more | 10 hr |
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.