Alert archive / Montana / Red Flag Warnings in 2021
Red Flag Warning 9, NWS Glasgow, MT
NWS Glasgow, MT issued this red flag warning at May 7, 2021, 3:05 AM MDT for 9 counties in Montana. It took effect at May 7, 2021, 12:00 PM MDT. It was in force for 8 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 7, 2021, 3:05 AM MDT (09:05 UTC)
- In effect from
- May 7, 2021, 12:00 PM MDT
- Expired
- May 7, 2021, 8:00 PM MDT
- In force
- 8 hr
- Issued by
- NWS Glasgow, MT
Counties Daniels County, MT, Dawson County, MT, McCone 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), 114 km from the middle of the area, began a volume at 09:08 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, 9.1 hours before the alert went out and 113 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
- 2617 m above ground
- 0-6 km bulk shear
- 55 kt
- 0-1 km storm-relative helicity
- 1 m²/s²
- 0-3 km storm-relative helicity
- 26 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
517 WWUS85 KGGW 070905 RFWGGW URGENT - FIRE WEATHER MESSAGE National Weather Service Glasgow MT 305 AM MDT Fri May 7 2021 MTZ120-080200- /O.UPG.KGGW.FW.A.0008.210507T1800Z-210508T0200Z/ /O.NEW.KGGW.FW.W.0009.210507T1800Z-210508T0200Z/ Fort Peck Reservation and Daniels/Roosevelt/Sheridan Counties- 305 AM MDT Fri May 7 2021 ...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 8 PM MDT THIS EVENING FOR STRONG WINDS AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONE 120... The National Weather Service in Glasgow has issued a Red Flag Warning for strong winds and low relative humidity, which is in effect from noon today to 8 PM MDT this evening. The Fire Weather Watch is no longer in effect. * AFFECTED AREA...Fire Weather Zone 120. * TIMING...Noon through 8pm today. * WINDS...Southeast 20 to 25 mph with gusts up to 30 mph. * RELATIVE HUMIDITY...As low as 16 percent. * TEMPERATURES...Highs in the mid to upper 60s. * IMPACTS...New fire starts will spread rapidly and become difficult to contain. PRECAUTIONARY/PREPAREDNESS ACTIONS... Please advise the appropriate officials or fire crews in these areas of this Red Flag Warning. && $$ MTZ122-080200- /O.NEW.KGGW.FW.W.0009.210507T1800Z-210508T0200Z/ Dawson/McCone/Prairie/Richland/Wibaux Counties- 305 AM MDT Fri May 7 2021 ...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 8 PM MDT THIS EVENING FOR STRONG WINDS AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONE 122... The National Weather Service in Glasgow has issued a Red Flag Warning for strong winds and low relative humidity, which is in effect from noon today to 8 PM MDT this evening. * AFFECTED AREA...Fire Weather Zone 122. * TIMING...Noon through 8pm today. * WINDS...Southeast 20 to 25 mph with gusts up to 35 mph. * RELATIVE HUMIDITY...As low as 17 percent. * TEMPERATURES...Highs in the upper 60s and low 70s. * IMPACTS...New fire starts will spread rapidly and become difficult to contain. PRECAUTIONARY/PREPAREDNESS ACTIONS... Please advise the appropriate officials or fire crews in these areas of this Red Flag Warning. && $$ http://www.weather.gov/glasgow
1 follow-up statement
079 WWUS85 KGGW 080154 RFWGGW URGENT - FIRE WEATHER MESSAGE National Weather Service Glasgow MT 754 PM MDT Fri May 7 2021 MTZ120-122-080300- /O.EXP.KGGW.FW.W.0009.000000T0000Z-210508T0200Z/ Fort Peck Reservation and Daniels/Roosevelt/Sheridan Counties- Dawson/McCone/Prairie/Richland/Wibaux Counties- 754 PM MDT Fri May 7 2021 ...RED FLAG WARNING WILL EXPIRE AT 8 PM MDT THIS EVENING FOR FIRE WEATHER ZONES 120 AND 122... Relative humidity values have been on the increase this evening. Therefore, the Red Flag Warning is being allowed to expire. However, gusty winds will continue through the rest of the evening and into the overnight hours, with precipitation spreading across the area overnight. $$ 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 7, 1:44 PM MDT | Winter Weather Advisory | GGW | Daniels, Phillips, Richland, Roosevelt, Sheridan, Valley | 40 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.