Alert archive / Minnesota / Red Flag Warnings in 2021
Red Flag Warning 3, NWS Duluth, MN
NWS Duluth, MN issued this red flag warning at Apr 2, 2021, 12:02 PM CDT for 6 counties in Minnesota. It was in force for 7 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 2, 2021, 12:02 PM CDT (17:02 UTC)
- Expired
- Apr 2, 2021, 7:00 PM CDT
- In force
- 7 hr
- Issued by
- NWS Duluth, MN
Counties Aitkin County, MN, Cass County, MN, Crow Wing County, MN, Itasca County, MN, Koochiching County, MN, Pine County, MN
The radar
The Duluth radar (KDLH), 111 km from the middle of the area, began a volume at 17:06 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
International Fa, MN (KINL), launched 12:00Z, 5.0 hours before the alert went out and 178 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
- 2099 m above ground
- 0-6 km bulk shear
- 49 kt
- 0-1 km storm-relative helicity
- 460 m²/s²
- 0-3 km storm-relative helicity
- 435 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
969 WWUS83 KDLH 021702 RFWDLH URGENT - FIRE WEATHER MESSAGE National Weather Service Duluth MN 1202 PM CDT Fri Apr 2 2021 ...RED FLAG WARNING FOR PORTIONS OF NORTH CENTRAL AND NORTHEAST MINNESOTA TODAY... .Southerly winds sustained to 20 mph with gusts to 35 mph and afternoon relative humidity of 20 to 30 percent combined with dry fuels will create critical fire weather conditions across portions of north central and northeast Minnesota today. MNZ010-018-025-026-033>036-038-030000- /O.NEW.KDLH.FW.W.0003.210402T1702Z-210403T0000Z/ Koochiching-North Itasca-North Cass-South Itasca-South Cass- Crow Wing-Northern Aitkin-South Aitkin-Pine- 1202 PM CDT Fri Apr 2 2021 ...RED FLAG WARNING IN EFFECT UNTIL 7 PM CDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR PORTIONS OF NORTHEAST AND NORTH CENTRAL MINNESOTA... The National Weather Service in Duluth has issued a Red Flag Warning for wind and low relative humidity, which is in effect until 7 PM CDT this evening. * AFFECTED AREA...In Minnesota, Koochiching, North Itasca, North Cass, South Itasca, South Cass, Crow Wing, Northern Aitkin, South Aitkin and Pine. * WINDS...South 10 to 20 mph with gusts up to 30 mph. * RELATIVE HUMIDITY...As low as 23 percent. * IMPACTS...Rapid fire growth is possible. 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. && $$ PA
2 follow-up statements
111 WWUS83 KDLH 022005 RFWDLH URGENT - FIRE WEATHER MESSAGE National Weather Service Duluth MN 305 PM CDT Fri Apr 2 2021 ...RED FLAG WARNING FOR PORTIONS OF NORTH CENTRAL AND NORTHEAST MINNESOTA TODAY... .Southerly winds sustained to 20 mph with gusts to 35 mph and afternoon relative humidity of 22 to 28 percent combined with dry fuels will create critical fire weather conditions across portions of north central and northeast Minnesota today. MNZ010-018-025-026-033>036-038-030000- /O.CON.KDLH.FW.W.0003.000000T0000Z-210403T0000Z/ Koochiching-North Itasca-North Cass-South Itasca-South Cass- Crow Wing-Northern Aitkin-South Aitkin-Pine- 305 PM CDT Fri Apr 2 2021 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 7 PM CDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR PORTIONS OF NORTHEAST AND NORTH CENTRAL MINNESOTA... * AFFECTED AREA...In Minnesota, Koochiching, Itasca, Cass, Crow Wing, Aitkin and Pine counties * WINDS...South 15 to 20 mph with gusts up to 35 mph. * RELATIVE HUMIDITY...As low as 22 percent. * IMPACTS...Rapid fire growth is possible. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now....or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ PA
382 WWUS83 KDLH 030007 RFWDLH URGENT - FIRE WEATHER MESSAGE National Weather Service Duluth MN 707 PM CDT Fri Apr 2 2021 MNZ010-018-025-026-033>036-038-030115- /O.EXP.KDLH.FW.W.0003.000000T0000Z-210403T0000Z/ Koochiching-North Itasca-North Cass-South Itasca-South Cass- Crow Wing-Northern Aitkin-South Aitkin-Pine- 707 PM CDT Fri Apr 2 2021 ...RED FLAG WARNING HAS EXPIRED FOR WIND AND LOW RELATIVE HUMIDITY FOR PORTIONS OF NORTHEAST AND NORTH CENTRAL MINNESOTA... Relative Humidity values have increased to over 25 percent, though winds will remain above 15 mph for another few hours. Therefore, the Red Flag Warning has been allowed to expire. $$
The office that day
Everything else NWS Duluth, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 2, 1:55 PM CDT | Small Craft Advisory | DLH | 5 hr |
Nearby
Red 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.