Alert archive / North Dakota / Red Flag Warnings in 2021
Red Flag Warning 5, NWS Grand Forks, ND
NWS Grand Forks, ND issued this red flag warning at Apr 22, 2021, 3:54 AM CDT for 17 counties in North Dakota; 9 counties in Minnesota. It took effect at Apr 22, 2021, 12:00 PM CDT. 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
- Apr 22, 2021, 3:54 AM CDT (08:54 UTC)
- In effect from
- Apr 22, 2021, 12:00 PM CDT
- Expired
- Apr 22, 2021, 8:00 PM CDT
- In force
- 8 hr
- Issued by
- NWS Grand Forks, ND
All 26 counties
Clay County, MN, Kittson County, MN, Marshall County, MN, Norman County, MN, Pennington County, MN, Polk County, MN, Red Lake County, MN, Roseau County, MN, Wilkin County, MN, Barnes County, ND, Benson County, ND, Cass County, ND, Cavalier County, ND, Eddy County, ND, Grand Forks County, ND, Griggs County, ND, Nelson County, ND, Pembina County, ND, Ramsey County, ND, Ransom County, ND, Richland County, ND, Sargent County, ND, Steele County, ND, Towner County, ND, Traill County, ND, Walsh County, ND
The radar
The Fargo/Grand Forks radar (KMVX), 19 km from the middle of the area, began a volume at 08:55 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
Bismarck Municip, ND (KBIS), launched 00:00Z, 8.9 hours before the alert went out and 267 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
- 2810 m above ground
- 0-6 km bulk shear
- 25 kt
- 0-1 km storm-relative helicity
- -2 m²/s²
- 0-3 km storm-relative helicity
- 66 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
487 WWUS83 KFGF 220854 RFWFGF URGENT - FIRE WEATHER MESSAGE National Weather Service Grand Forks ND 354 AM CDT Thu Apr 22 2021 MNZ001>005-007-008-013>015-029-NDZ006>008-014>016-024-026>030-038- 039-049-052>054-230100- /O.UPG.KFGF.FW.A.0003.210422T1700Z-210423T0100Z/ /O.NEW.KFGF.FW.W.0005.210422T1700Z-210423T0100Z/ West Polk-Norman-Clay-Kittson-Roseau-West Marshall-East Marshall- Pennington-Red Lake-East Polk-Wilkin-Towner-Cavalier-Pembina- Benson-Ramsey-Eastern Walsh-Eddy-Nelson-Grand Forks-Griggs-Steele- Traill-Barnes-Cass-Ransom-Sargent-Richland-Western Walsh- 354 AM CDT Thu Apr 22 2021 ...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 8 PM CDT THIS EVENING FOR LOW RELATIVE HUMIDITY AND GUSTY WINDS FOR EASTERN NORTH DAKOTA AND PORTIONS OF NORTHWESTERN AND WEST CENTRAL MINNESOTA... The National Weather Service in Grand Forks has issued a Red Flag Warning for low relative humidity and gusty winds, which is in effect from noon today to 8 PM CDT this evening. The Fire Weather Watch is no longer in effect. * AFFECTED AREA...In Minnesota...Fire Weather Zones 001...002... 003...004...005...007...008...013...014...015 and 029. In North Dakota...Fire Weather Zones 006...007...008...014... 015...016... 024...026...027...028...029...030...038...039... 049...052... 053 and 054. * TIMING... Afternoon and early evening Thursday * WINDS...Southwest 15 to 25 mph with gusts up to 35 mph. * RELATIVE HUMIDITY...As low as 13 percent. * TEMPERATURES...In the low to mid 60s. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. A combination of strong winds, low relative humidity, and warm temperatures can contribute to extreme fire behavior. && $$
1 follow-up statement
231 WWUS83 KFGF 230105 RFWFGF URGENT - FIRE WEATHER MESSAGE National Weather Service Grand Forks ND 805 PM CDT Thu Apr 22 2021 MNZ001>005-007-008-013>015-029-NDZ006>008-014>016-024-026>030-038- 039-049-052>054-230215- /O.EXP.KFGF.FW.W.0005.000000T0000Z-210423T0100Z/ West Polk-Norman-Clay-Kittson-Roseau-West Marshall-East Marshall- Pennington-Red Lake-East Polk-Wilkin-Towner-Cavalier-Pembina- Benson-Ramsey-Eastern Walsh-Eddy-Nelson-Grand Forks-Griggs-Steele- Traill-Barnes-Cass-Ransom-Sargent-Richland-Western Walsh- 805 PM CDT Thu Apr 22 2021 ...RED FLAG WARNING HAS EXPIRED FOR EASTERN NORTH DAKOTA AND PORTIONS OF NORTHWESTERN AND WEST CENTRAL MINNESOTA... Winds have decreased and relative humidity values have started to improve and will continue to do so as the evening progresses. $$
Nearby
Red Flag Warnings in North Dakota, 2021Red Flag Warnings in Minnesota, 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.