Alert archive / Minnesota / Red Flag Warnings in 2021
Red Flag Warning 9, NWS Duluth, MN
NWS Duluth, MN issued this red flag warning at Jul 25, 2021, 9:16 AM CDT for 7 counties in Minnesota. It took effect at Jul 25, 2021, 1:00 PM CDT. It was in force for 5 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
- Jul 25, 2021, 9:16 AM CDT (14:16 UTC)
- In effect from
- Jul 25, 2021, 1:00 PM CDT
- Expired
- Jul 25, 2021, 6:00 PM CDT
- In force
- 5 hr
- Issued by
- NWS Duluth, MN
Counties Aitkin County, MN, Carlton County, MN, Cook County, MN, Itasca County, MN, Koochiching County, MN, Lake County, MN, Saint Louis County, MN
The radar
The Duluth radar (KDLH), 69 km from the middle of the area, began a volume at 14:15 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, 2.3 hours before the alert went out and 140 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
- 1925 m above ground
- 0-6 km bulk shear
- 64 kt
- 0-1 km storm-relative helicity
- 83 m²/s²
- 0-3 km storm-relative helicity
- 160 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
159 WWUS83 KDLH 251416 RFWDLH URGENT - FIRE WEATHER MESSAGE National Weather Service Duluth MN 916 AM CDT Sun Jul 25 2021 ...CRITICAL FIRE WEATHER CONDITIONS EXPECTED THIS AFTERNOON... .Low relative humidity, strong wind gusts, and dry fuels will be favorable for rapid fire growth this afternoon across northeast Minnesota. MNZ010>012-018>020-026-035-037-252230- /O.NEW.KDLH.FW.W.0009.210725T1800Z-210725T2300Z/ Koochiching-North St. Louis-Northern Cook and Lake-North Itasca- Central St. Louis-Southern Lake-South Itasca-Northern Aitkin- Carlton and South St. Louis- 916 AM CDT Sun Jul 25 2021 ...RED FLAG WARNING IN EFFECT FROM 1 PM THIS AFTERNOON TO 6 PM CDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR NORTHEAST MINNESOTA... The National Weather Service in Duluth has issued a Red Flag Warning for wind and low relative humidity, which is in effect from 1 PM this afternoon to 6 PM CDT this evening. * AFFECTED AREA...In Minnesota, Koochiching, North St. Louis, Northern Cook and Lake, North Itasca, Central St. Louis, Southern Lake, South Itasca, Northern Aitkin and Carlton and South St. Louis. * WINDS...Northwest 15 to 20 mph with gusts up to 30 mph. * RELATIVE HUMIDITY...As low as 20 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, dry fuels, and warm temperatures can contribute to extreme fire behavior. && $$
1 follow-up statement
702 WWUS83 KDLH 251704 RFWDLH URGENT - FIRE WEATHER MESSAGE National Weather Service Duluth MN 1204 PM CDT Sun Jul 25 2021 ...CRITICAL FIRE WEATHER CONDITIONS EXPECTED THIS AFTERNOON... .Low relative humidity, strong wind gusts, and dry fuels will be favorable for rapid fire growth this afternoon across northeast Minnesota. MNZ021-252300- /O.EXA.KDLH.FW.W.0009.210725T1800Z-210725T2300Z/ Southern Cook- 1204 PM CDT Sun Jul 25 2021 ...RED FLAG WARNING IN EFFECT UNTIL 6 PM CDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR NORTHEAST MINNESOTA... The National Weather Service in Duluth has issued a Red Flag Warning for wind and low relative humidity, which is in effect until 6 PM CDT this evening. * AFFECTED AREA...In Minnesota, Southern Cook. * WINDS...West 15 to 20 mph with gusts up to 30 mph. * RELATIVE HUMIDITY...As low as 20 percent. * IMPACTS...These conditions are supportive of rapid fire growth. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now....or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ MNZ010>012-018>020-026-035-037-252300- /O.CON.KDLH.FW.W.0009.210725T1800Z-210725T2300Z/ Koochiching-North St. Louis-Northern Cook and Lake-North Itasca- Central St. Louis-Southern Lake-South Itasca-Northern Aitkin- Carlton and South St. Louis- 1204 PM CDT Sun Jul 25 2021 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 6 PM CDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR NORTHEAST MINNESOTA... * AFFECTED AREA...In Minnesota, Koochiching, North St. Louis, Northern Cook and Lake, North Itasca, Central St. Louis, Southern Lake, South Itasca, Northern Aitkin and Carlton and South St. Louis. * WINDS...Northwest 15 to 20 mph with gusts up to 30 mph. * RELATIVE HUMIDITY...As low as 20 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, dry fuels, and warm temperatures can contribute to extreme fire behavior. && $$
The office that day
Everything else NWS Duluth, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 25, 12:50 PM CDT | Small Craft Advisory | DLH | 6 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.