Alert archive / Montana / Red Flag Warnings in 2021
Red Flag Warning 8, NWS Glasgow, MT
NWS Glasgow, MT issued this red flag warning at May 1, 2021, 3:14 AM MDT for 12 counties in Montana. It took effect at May 1, 2021, 2:00 PM MDT. It was in force for 6 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
- May 1, 2021, 3:14 AM MDT (09:14 UTC)
- In effect from
- May 1, 2021, 2:00 PM MDT
- Expired
- May 1, 2021, 8:00 PM MDT
- In force
- 6 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 09:14 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, 9.2 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
- 3904 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- 53 m²/s²
- 0-3 km storm-relative helicity
- 69 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
157 WWUS85 KGGW 010914 RFWGGW URGENT - FIRE WEATHER MESSAGE National Weather Service Glasgow MT 314 AM MDT Sat May 1 2021 MTZ120-122-134-136-020200- /O.UPG.KGGW.FW.A.0007.210501T2000Z-210502T0200Z/ /O.NEW.KGGW.FW.W.0008.210501T2000Z-210502T0200Z/ Fort Peck Reservation and Daniels/Roosevelt/Sheridan Counties- Dawson/McCone/Prairie/Richland/Wibaux Counties- Northern Valley and Northern Phillips Counties- The Lower Missouri River Breaks including the Charles M Russell National Wildlife Refuge- 314 AM MDT Sat May 1 2021 ...RED FLAG WARNING IN EFFECT FROM 2 PM THIS AFTERNOON TO 8 PM MDT THIS EVENING FOR GUSTY WINDS AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 120, 122, 134, AND 136... The National Weather Service in Glasgow has issued a Red Flag Warning for gusty winds and low relative humidity, which is in effect from 2 PM this afternoon to 8 PM MDT this evening. The Fire Weather Watch is no longer in effect. * AFFECTED AREA...Fire Weather Zones 120, 122, 134 and 136. * TIMING...From 2 pm until 8 pm today. * WINDS...Northwest 15 to 20 mph with gusts up to 30 mph. * RELATIVE HUMIDITY...As low as 19 percent. * TEMPERATURES...In the low to mid 70s. PRECAUTIONARY/PREPAREDNESS ACTIONS... Please advise the appropriate officials or fire crews in these areas of this Red Flag Warning. && $$ http://www.weather.gov/glasgow
1 follow-up statement
157 WWUS85 KGGW 020154 RFWGGW URGENT - FIRE WEATHER MESSAGE National Weather Service Glasgow MT 754 PM MDT Sat May 1 2021 MTZ120-122-134-136-020300- /O.EXP.KGGW.FW.W.0008.000000T0000Z-210502T0200Z/ Fort Peck Reservation and Daniels/Roosevelt/Sheridan Counties- Dawson/McCone/Prairie/Richland/Wibaux Counties- Northern Valley and Northern Phillips Counties- The Lower Missouri River Breaks including the Charles M Russell National Wildlife Refuge- 754 PM MDT Sat May 1 2021 ...RED FLAG WARNING WILL EXPIRE AT 8 PM MDT THIS EVENING FOR FIRE WEATHER ZONES 120, 122, 134, AND 136... Relative humidity continues to recover as winds calm. The warning will be allowed to expire. $$ 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 |
|---|---|---|---|---|
| May 1, 2:13 PM MDT | Lake Wind Advisory | GGW | Garfield, McCone, Petroleum, Phillips, Valley | 31 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.