Alert archive / Minnesota / Red Flag Warnings in 2021
Red Flag Warning 5, NWS Duluth, MN
NWS Duluth, MN issued this red flag warning at May 6, 2021, 3:26 AM CDT for 8 counties in Minnesota. It took effect at May 6, 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
- May 6, 2021, 3:26 AM CDT (08:26 UTC)
- In effect from
- May 6, 2021, 12:00 PM CDT
- Expired
- May 6, 2021, 8:00 PM CDT
- In force
- 8 hr
- Issued by
- NWS Duluth, MN
Counties Aitkin County, MN, Carlton County, MN, Cass County, MN, Crow Wing County, MN, Itasca County, MN, Koochiching County, MN, Pine County, MN, Saint Louis County, MN
The radar
The Duluth radar (KDLH), 92 km from the middle of the area, began a volume at 08:31 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 00:00Z, 8.4 hours before the alert went out and 173 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
- 2 J/kg
- Mixed-layer CIN
- -6 J/kg
- Mixed-layer LCL
- 2317 m above ground
- 0-6 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- 23 m²/s²
- 0-3 km storm-relative helicity
- 108 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
101 WWUS83 KDLH 060826 RFWDLH URGENT - FIRE WEATHER MESSAGE National Weather Service Duluth MN 326 AM CDT Thu May 6 2021 ...CRITICAL FIRE WEATHER CONDITIONS POSSIBLE TODAY... .Critical fire weather conditions will be possible this afternoon across portions of northeast Minnesota. Winds may become gusty in the afternoon, with gusts currently likely to reach up to 25 MPH. Dry air in the low levels tomorrow is also likely to reduce min RHs below 25%. MNZ010-018-019-025-026-033>038-061630- /O.UPG.KDLH.FW.A.0002.210506T1700Z-210507T0100Z/ /O.NEW.KDLH.FW.W.0005.210506T1700Z-210507T0100Z/ Koochiching-North Itasca-Central St. Louis-North Cass- South Itasca-South Cass-Crow Wing-Northern Aitkin-South Aitkin- Carlton and South St. Louis-Pine- 326 AM CDT Thu May 6 2021 ...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 8 PM CDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR NORTHEASTERN MINNESOTA... The National Weather Service in Duluth has issued a Red Flag Warning for wind and low relative humidity, 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, Koochiching, North Itasca, Central St. Louis, North Cass, South Itasca, South Cass, Crow Wing, Northern Aitkin, South Aitkin, Carlton and South St. Louis and Pine. * WINDS...Northwest 10 to 15 mph with gusts up to 30 mph. * RELATIVE HUMIDITY...As low as 23 percent. * IMPACTS...These conditions are supportive of rapid fire growth. 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. && $$
2 follow-up statements
273 WWUS83 KDLH 061958 RFWDLH URGENT - FIRE WEATHER MESSAGE National Weather Service Duluth MN 258 PM CDT Thu May 6 2021 ...CRITICAL FIRE WEATHER CONDITIONS CONTINUE THIS AFTERNOON... .Critical fire weather conditions will continue this afternoon across portions of northeast Minnesota. Gusty winds up to 30 MPH will continue this afternoon before easing this evening. Min RHs below 25% are expected to continue until a cold front sweeps across the area this evening. MNZ010-018-019-025-026-033>038-070100- /O.CON.KDLH.FW.W.0005.000000T0000Z-210507T0100Z/ Koochiching-North Itasca-Central St. Louis-North Cass- South Itasca-South Cass-Crow Wing-Northern Aitkin-South Aitkin- Carlton and South St. Louis-Pine- 258 PM CDT Thu May 6 2021 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM CDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR NORTHEASTERN MINNESOTA... * AFFECTED AREA...In Minnesota, Koochiching, North Itasca, Central St. Louis, North Cass, South Itasca, South Cass, Crow Wing, Northern Aitkin, South Aitkin, Carlton and South St. Louis and Pine. * WINDS...Northwest 10 to 15 mph with gusts up to 30 mph. * RELATIVE HUMIDITY...As low as 22 percent. * IMPACTS...These conditions are supportive of rapid fire growth. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now....or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$
938 WWUS83 KDLH 070108 RFWDLH URGENT - FIRE WEATHER MESSAGE National Weather Service Duluth MN 808 PM CDT Thu May 6 2021 ...RELATIVE HUMIDITIES HAVE INCREASED THIS EVENING... .Diurnal decoupling of the lower layers of the atmosphere and a few sprinkles this afternoon and evening have increased relative humidity values across the area. Winds still remain gusty from the northwest. Near-critical fire weather conditions will continue until winds subside later tonight. MNZ010-018-019-025-026-033>038-070215- /O.EXP.KDLH.FW.W.0005.000000T0000Z-210507T0100Z/ Koochiching-North Itasca-Central St. Louis-North Cass- South Itasca-South Cass-Crow Wing-Northern Aitkin-South Aitkin- Carlton and South St. Louis-Pine- 808 PM CDT Thu May 6 2021 ...RED FLAG WARNING HAS EXPIRED FOR WIND AND LOW RELATIVE HUMIDITY FOR PORTIONS OF NORTHERN MINNESOTA... Relative humidity values have increased over the last few hours and winds remain gusty. Therefore near-critical fire weather conditions will persist for a few more hours until winds subside later tonight. Critical fire weather conditions have ended. $$ Huyck
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.