Alert archive / Minnesota / Red Flag Warnings in 2021
Red Flag Warning 8, NWS Duluth, MN
NWS Duluth, MN issued this red flag warning at Jun 18, 2021, 4:35 AM CDT for 6 counties in Minnesota; 6 counties in Wisconsin. It took effect at Jun 18, 2021, 12:00 PM CDT. It was in force for 8 hr. 1 report came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Jun 18, 2021, 4:35 AM CDT (09:35 UTC)
- In effect from
- Jun 18, 2021, 12:00 PM CDT
- Expired
- Jun 18, 2021, 7:42 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, Pine County, MN, Saint Louis County, MN, Ashland County, WI, Bayfield County, WI, Burnett County, WI, Douglas County, WI, Sawyer County, WI, Washburn County, WI
The radar
The Duluth radar (KDLH), 44 km from the middle of the area, began a volume at 09:35 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jun 18, 6:44 PM CDT | TSTM WND GST 56 | 4 Ne Brainerd, MN | ASOS STATION KBRD BRAINERD AIRPORT. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Minneapolis, MN (KMPX), launched 00:00Z, 9.6 hours before the alert went out and 202 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
- 61 J/kg
- Mixed-layer CIN
- -387 J/kg
- Mixed-layer LCL
- 1555 m above ground
- 0-6 km bulk shear
- 55 kt
- 0-1 km storm-relative helicity
- -13 m²/s²
- 0-3 km storm-relative helicity
- 56 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted.
466 WWUS83 KDLH 180935 RFWDLH URGENT - FIRE WEATHER MESSAGE National Weather Service Duluth MN 435 AM CDT Fri Jun 18 2021 ...CRITICAL FIRE WEATHER CONDITIONS POSSIBLE TODAY... .Dry conditions with relative humidity values of 20 to 30 percent and west winds of 10 to 20 MPH with gusts up to 30 MPH are expected today across portions of northwest Wisconsin and portions of northeast Minnesota. These dry conditions include the Pine Barrens across northwest Wisconsin. MNZ033>038-WIZ001>003-006>008-181745- /O.UPG.KDLH.FW.A.0005.210618T1700Z-210619T0000Z/ /O.NEW.KDLH.FW.W.0008.210618T1700Z-210619T0100Z/ South Cass-Crow Wing-Northern Aitkin-South Aitkin- Carlton and South St. Louis-Pine-Douglas-Bayfield-Ashland-Burnett- Washburn-Sawyer- 435 AM CDT Fri Jun 18 2021 ...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 8 PM CDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR PORTIONS OF NORTHWEST WISCONSIN AND 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 noon today to 8 PM CDT this evening. The Fire Weather Watch is no longer in effect. * AFFECTED AREA...In Minnesota, South Cass, Crow Wing, Northern Aitkin, South Aitkin, Carlton and South St. Louis and Pine. In Wisconsin, Douglas, Bayfield, Ashland, Burnett, Washburn and Sawyer. * WINDS...West 10 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. && $$
3 follow-up statements
637 WWUS83 KDLH 182222 RFWDLH URGENT - FIRE WEATHER MESSAGE National Weather Service Duluth MN 522 PM CDT Fri Jun 18 2021 ...CRITICAL FIRE WEATHER CONDITIONS POSSIBLE TODAY... .Dry conditions with relative humidity values of 20 to 30 percent and west winds of 10 to 20 MPH with gusts up to 40 MPH are expected today across portions of northwest Wisconsin and portions of northeast Minnesota. These dry conditions include the Pine Barrens across northwest Wisconsin. MNZ033>038-WIZ001>003-006>008-190100- /O.CON.KDLH.FW.W.0008.000000T0000Z-210619T0100Z/ South Cass-Crow Wing-Northern Aitkin-South Aitkin- Carlton and South St. Louis-Pine-Douglas-Bayfield-Ashland-Burnett- Washburn-Sawyer- 522 PM CDT Fri Jun 18 2021 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM CDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR PORTIONS OF NORTHWEST WISCONSIN AND NORTHEAST MINNESOTA... * AFFECTED AREA...In Minnesota, Cass, Crow Wing, Aitkin, Carlton, Southern St. Louis and Pine. In Wisconsin, Douglas, Bayfield, Ashland, Burnett, Washburn and Sawyer. * WINDS...West 10 to 20 mph with gusts up to 30 mph. * RELATIVE HUMIDITY...As low as 20 percent. * IMPACTS...These conditions are supportive of rapid fire growth. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now....or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$
363 WWUS83 KDLH 182223 CCA RFWDLH URGENT - FIRE WEATHER MESSAGE...CORRECTED National Weather Service Duluth MN 523 PM CDT Fri Jun 18 2021 ...CRITICAL FIRE WEATHER CONDITIONS POSSIBLE TODAY... .Dry conditions with relative humidity values of 20 to 30 percent and west winds of 10 to 20 MPH with gusts up to 40 MPH are expected today across portions of northwest Wisconsin and portions of northeast Minnesota. These dry conditions include the Pine Barrens across northwest Wisconsin. MNZ033>038-WIZ001>003-006>008-190100- /O.COR.KDLH.FW.W.0008.000000T0000Z-210619T0100Z/ South Cass-Crow Wing-Northern Aitkin-South Aitkin- Carlton and South St. Louis-Pine-Douglas-Bayfield-Ashland-Burnett- Washburn-Sawyer- 523 PM CDT Fri Jun 18 2021 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM CDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR PORTIONS OF NORTHWEST WISCONSIN AND NORTHEAST MINNESOTA... * AFFECTED AREA...In Minnesota, Southern Cass, Crow Wing, Aitkin, Carlton, Southern St. Louis and Pine. In Wisconsin, Douglas, Bayfield, Ashland, Burnett, Washburn and Sawyer. * WINDS...West 10 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. && $$
454 WWUS83 KDLH 190042 RFWDLH URGENT - FIRE WEATHER MESSAGE National Weather Service Duluth MN 742 PM CDT Fri Jun 18 2021 MNZ033>038-WIZ001>003-006>008-190145- /O.CAN.KDLH.FW.W.0008.000000T0000Z-210619T0100Z/ South Cass-Crow Wing-Northern Aitkin-South Aitkin- Carlton and South St. Louis-Pine-Douglas-Bayfield-Ashland-Burnett- Washburn-Sawyer- 742 PM CDT Fri Jun 18 2021 ...RED FLAG WARNING IS CANCELLED... The National Weather Service in Duluth has cancelled the Red Flag Warning. The wind is diminishing and humidities are increasing. $$
The office that day
Everything else NWS Duluth, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 18, 8:56 AM CDT | Small Craft Advisory | DLH | 9 hr |
Nearby
Red Flag Warnings in Minnesota, 2021Red Flag Warnings in Wisconsin, 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.