Alert archive / Minnesota / Red Flag Warnings in 2021
Red Flag Warning 7, NWS Duluth, MN
NWS Duluth, MN issued this red flag warning at Jun 12, 2021, 1:24 PM CDT for 5 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
- Jun 12, 2021, 1:24 PM CDT (18:24 UTC)
- Expired
- Jun 12, 2021, 8:00 PM CDT
- In force
- 7 hr
- Issued by
- NWS Duluth, MN
Counties Cook County, MN, Itasca County, MN, Koochiching County, MN, Lake County, MN, Saint Louis County, MN
The radar
The Duluth radar (KDLH), 101 km from the middle of the area, began a volume at 18:27 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, 6.4 hours before the alert went out and 116 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
- 1177 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- 121 m²/s²
- 0-3 km storm-relative helicity
- 138 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
420 WWUS83 KDLH 121824 RFWDLH URGENT - FIRE WEATHER MESSAGE National Weather Service Duluth MN 124 PM CDT Sat Jun 12 2021 ...CRITICAL FIRE WEATHER CONDITIONS THIS AFTERNOON INTO THIS EVENING... .Dry conditions with relative humidity values of 20 to 30 percent and strong west and northwest winds of 10 to 20 mph with gusts to 30 mph are forecast this afternoon into this evening over portions of northern Minnesota. The loss of daytime heating this evening along with a surface low over northern Ontario pushing farther east away from the area will allow RHs to rise and winds to weaken this evening. MNZ010>012-018-019-026-130100- /O.NEW.KDLH.FW.W.0007.210612T1824Z-210613T0100Z/ Koochiching-North St. Louis-Northern Cook and Lake-North Itasca- Central St. Louis-South Itasca- 124 PM CDT Sat Jun 12 2021 ...RED FLAG WARNING FOR LOW RELATIVE HUMIDTY AND STRONG SUSTAINED WINDS AND GUSTS IN EFFECT FOR PORTIONS OF NORTH-CENTRAL MINNESOTA UNTIL 8 PM CDT THIS EVENING... The National Weather Service in Duluth has issued a Red Flag Warning for wind and low relative humidity, which is in effect until 8 PM CDT this evening. * AFFECTED AREA...In Minnesota, Koochiching, North St. Louis, Northern Cook and Lake, North Itasca, Central St. Louis and South Itasca. * WINDS...West 10 to 20 mph with gusts up to 30 mph. * RELATIVE HUMIDITY...As low as 23 percent. * IMPACTS...Fires which start will spread easily. 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. && $$ Huyck
2 follow-up statements
205 WWUS83 KDLH 122030 RFWDLH URGENT - FIRE WEATHER MESSAGE National Weather Service Duluth MN 330 PM CDT Sat Jun 12 2021 ...CRITICAL FIRE WEATHER CONDITIONS THIS AFTERNOON INTO THIS EVENING... .Dry conditions with relative humidity values of 20 to 30 percent and strong west and northwest winds of 10 to 20 mph with gusts to 30 mph are forecast late this afternoon into this evening over portions of northern Minnesota. The loss of daytime heating this evening along with a surface low over northern Ontario pushing farther east away from the area will allow RHs to rise and winds to weaken this evening. MNZ010>012-018-019-026-130100- /O.CON.KDLH.FW.W.0007.000000T0000Z-210613T0100Z/ Koochiching-North St. Louis-Northern Cook and Lake-North Itasca- Central St. Louis-South Itasca- 330 PM CDT Sat Jun 12 2021 ...RED FLAG WARNING FOR LOW RELATIVE HUMIDTY AND STRONG SUSTAINED WINDS AND GUSTS IN EFFECT FOR PORTIONS OF NORTH-CENTRAL MINNESOTA UNTIL 8 PM CDT THIS EVENING... * AFFECTED AREA...In Minnesota, Koochiching, North St. Louis, Northern Cook and Lake, North Itasca, Central St. Louis and South Itasca. * WINDS...West 10 to 15 mph with gusts up to 30 mph. * RELATIVE HUMIDITY...As low as 23 percent. * IMPACTS...Fires which start will spread easily. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now....or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ Huyck
537 WWUS83 KDLH 130054 RFWDLH URGENT - FIRE WEATHER MESSAGE National Weather Service Duluth MN 754 PM CDT Sat Jun 12 2021 MNZ010>012-018-019-026-130200- /O.EXP.KDLH.FW.W.0007.000000T0000Z-210613T0100Z/ Koochiching-North St. Louis-Northern Cook and Lake-North Itasca- Central St. Louis-South Itasca- 754 PM CDT Sat Jun 12 2021 ...RED FLAG WARNING WILL EXPIRE AT 8 PM CDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR PORTIONS OF NORTHEASTERN MINNESOTA... Relative humidity has risen above 25 percent and wind speeds will decrease quickly in the next two hours. Therefore, the Red Flag Warning will be allowed to expire. $$
The office that day
Everything else NWS Duluth, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 11, 9:01 PM CDT | Dense Fog Advisory | DLH | Carlton, Lake, Saint Louis | 7 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.