Alert archive / Minnesota / Red Flag Warnings in 2021
Red Flag Warning 1, NWS La Crosse, WI
NWS La Crosse, WI issued this red flag warning at Apr 2, 2021, 11:12 AM CDT for 4 counties in Iowa; 5 counties in Minnesota. It was in force for 9 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, 11:12 AM CDT (16:12 UTC)
- Expired
- Apr 2, 2021, 8:00 PM CDT
- In force
- 9 hr
- Issued by
- NWS La Crosse, WI
Counties Chickasaw County, IA, Floyd County, IA, Howard County, IA, Mitchell County, IA, Dodge County, MN, Fillmore County, MN, Mower County, MN, Olmsted County, MN, Wabasha County, MN
The radar
The La Crosse radar (KARX), 108 km from the middle of the area, began a volume at 16:09 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
Minneapolis, MN (KMPX), launched 12:00Z, 4.2 hours before the alert went out and 163 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
- 2150 m above ground
- 0-6 km bulk shear
- 42 kt
- 0-1 km storm-relative helicity
- 258 m²/s²
- 0-3 km storm-relative helicity
- 417 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
492 WWUS83 KARX 021612 RFWARX URGENT - FIRE WEATHER MESSAGE National Weather Service La Crosse WI 1112 AM CDT Fri Apr 2 2021 ...Red Flag Warning Today... .Wind gusts 35 to 45 mph today combined with relative humidities of 15 to 25 percent and dry or dead vegetation will lead to critical fire weather conditions today. Burning today is not recommended. IAZ008-009-018-019-MNZ079-086-087-094-095-030015- /O.NEW.KARX.FW.W.0001.210402T1612Z-210403T0100Z/ Mitchell-Howard-Floyd-Chickasaw-Wabasha-Dodge-Olmsted-Mower- Fillmore- 1112 AM CDT Fri Apr 2 2021 ...RED FLAG WARNING IN EFFECT UNTIL 8 PM CDT THIS EVENING FOR GUSTY WINDS AND LOW HUMIDITY FOR SOUTHEAST MN AND NORTHEAST IA... The National Weather Service in La Crosse has issued a Red Flag Warning, which is in effect until 8 PM CDT this evening. * AFFECTED AREA...IN Iowa...Mitchell...Howard...Floyd... Chickasaw. IN Minnesota...Wabasha...Dodge...Olmsted...Mower... Fillmore. * TIMING...Through 8pm. * WIND...South winds 20 to 30 mph with gusts 35 to 45 mph. * HUMIDITY...15 to 25 percent. * TEMPERATURES...High temperatures 55 to 60. * IMPACTS...any fires that develop will likely spread rapidly. Outdoor burning is not recommended. 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. && $$ Zapotocny
1 follow-up statement
067 WWUS83 KARX 030100 RFWARX URGENT - FIRE WEATHER MESSAGE National Weather Service La Crosse WI 800 PM CDT Fri Apr 2 2021 ...Critical Fire Weather Conditions Improving This Evening... .Winds will continue to decrease this evening with relative humidity also beginning to climb. As a result, the Red Flag Warning will be allowed to expire. IAZ008-009-018-019-MNZ079-086-087-094-095-030200- /O.EXP.KARX.FW.W.0001.000000T0000Z-210403T0100Z/ Mitchell-Howard-Floyd-Chickasaw-Wabasha-Dodge-Olmsted-Mower- Fillmore- 800 PM CDT Fri Apr 2 2021 ...RED FLAG WARNING WILL EXPIRE AT 8 PM CDT THIS EVENING FOR GUSTY WINDS AND LOW HUMIDITY FOR SOUTHEAST MN AND NORTHEAST IA... Winds will continue to decrease this evening with relative humidity also beginning to climb. However, burning is still not recommended through the evening hours. $$ LL
Nearby
Red Flag Warnings in Minnesota, 2021Red Flag Warnings in Iowa, 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.