Alert archive / South Dakota / Red Flag Warnings in 2021
Red Flag Warning 15, NWS Aberdeen, SD
NWS Aberdeen, SD issued this red flag warning at May 6, 2021, 3:27 AM CDT for 15 counties in South Dakota; Big Stone County, Traverse County, Minnesota. It took effect at May 6, 2021, 11:00 AM CDT. 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
- May 6, 2021, 3:27 AM CDT (08:27 UTC)
- In effect from
- May 6, 2021, 11:00 AM CDT
- Expired
- May 6, 2021, 8:00 PM CDT
- In force
- 9 hr
- Issued by
- NWS Aberdeen, SD
Counties Big Stone County, MN, Traverse County, MN, Brown County, SD, Campbell County, SD, Clark County, SD, Codington County, SD, Day County, SD, Deuel County, SD, Edmunds County, SD, Faulk County, SD, Grant County, SD, Hamlin County, SD, Marshall County, SD, McPherson County, SD, Roberts County, SD, Spink County, SD, Walworth County, SD
The radar
The Aberdeen radar (KABR), 40 km from the middle of the area, began a volume at 08:26 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
Aberdeen, SD (KABR), launched 00:00Z, 8.5 hours before the alert went out and 59 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
- 1032 m above ground
- 0-6 km bulk shear
- 39 kt
- 0-1 km storm-relative helicity
- -41 m²/s²
- 0-3 km storm-relative helicity
- 37 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
924 WWUS83 KABR 060827 RFWABR URGENT - FIRE WEATHER MESSAGE National Weather Service Aberdeen SD 327 AM CDT Thu May 6 2021 SDZ003-015-016-060930- /O.CAN.KABR.FW.A.0005.210506T1600Z-210507T0100Z/ Corson-Dewey-Potter- 327 AM CDT Thu May 6 2021 /227 AM MDT Thu May 6 2021/ ...FIRE WEATHER WATCH IS CANCELLED FOR WIND AND LOW RELATIVE HUMIDITY FOR NORTH CENTRAL AND NORTHEASTERN SOUTH DAKOTA... The National Weather Service in Aberdeen has cancelled the Fire Weather Watch. $$ MNZ039-046-SDZ004>011-017>023-061630- /O.UPG.KABR.FW.A.0005.210506T1600Z-210507T0100Z/ /O.NEW.KABR.FW.W.0015.210506T1600Z-210507T0100Z/ Traverse-Big Stone-Campbell-McPherson-Brown-Marshall-Roberts- Walworth-Edmunds-Day-Faulk-Spink-Clark-Codington-Grant-Hamlin- Deuel- 327 AM CDT Thu May 6 2021 ...RED FLAG WARNING IN EFFECT FROM 11 AM THIS MORNING TO 8 PM CDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR NORTH CENTRAL AND NORTHEAST SOUTH DAKOTA AND WESTERN MINNESOTA... The National Weather Service in Aberdeen has issued a Red Flag Warning for wind and low relative humidity, which is in effect from 11 AM this morning to 8 PM CDT this evening. The Fire Weather Watch is no longer in effect. * AFFECTED AREA...In Minnesota, Traverse and Big Stone. In South Dakota, Campbell, McPherson, Brown, Marshall, Roberts, Walworth, Edmunds, Day, Faulk, Spink, Clark, Codington, Grant, Hamlin and Deuel. * WINDS...Northwest 10 to 20 mph with gusts up to 30 mph. * RELATIVE HUMIDITY...As low as 15 percent. * IMPACTS...The combination of gusty winds and low relative humidity will produce critical fire weather conditions. Any fires will spread rapidly and become difficult to control and suppress. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. A combination of strong winds, low relative humidity, and warm temperatures can contribute to extreme fire behavior. && $$
2 follow-up statements
973 WWUS83 KABR 061532 RFWABR URGENT - FIRE WEATHER MESSAGE National Weather Service Aberdeen SD 1032 AM CDT Thu May 6 2021 MNZ039-046-SDZ004>011-017>023-070100- /O.CON.KABR.FW.W.0015.210506T1600Z-210507T0100Z/ Traverse-Big Stone-Campbell-McPherson-Brown-Marshall-Roberts- Walworth-Edmunds-Day-Faulk-Spink-Clark-Codington-Grant-Hamlin- Deuel- 1032 AM CDT Thu May 6 2021 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM CDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR NORTH CENTRAL AND NORTHEAST SOUTH DAKOTA AND WESTERN MINNESOTA... * AFFECTED AREA...In Minnesota, Traverse and Big Stone. In South Dakota, Campbell, McPherson, Brown, Marshall, Roberts, Walworth, Edmunds, Day, Faulk, Spink, Clark, Codington, Grant, Hamlin and Deuel. * WINDS...Northwest 10 to 20 mph with gusts up to 30 mph. * RELATIVE HUMIDITY...As low as 17 percent. * IMPACTS...The combination of gusty winds and low relative humidity will produce critical fire weather conditions. Any fires will spread rapidly and become difficult to control and suppress. 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. && $$
209 WWUS83 KABR 070101 RFWABR URGENT - FIRE WEATHER MESSAGE National Weather Service Aberdeen SD 801 PM CDT Thu May 6 2021 MNZ039-046-SDZ004>011-017>023-070215- /O.EXP.KABR.FW.W.0015.000000T0000Z-210507T0100Z/ Traverse-Big Stone-Campbell-McPherson-Brown-Marshall-Roberts- Walworth-Edmunds-Day-Faulk-Spink-Clark-Codington-Grant-Hamlin- Deuel- 801 PM CDT Thu May 6 2021 ...RED FLAG WARNING HAS EXPIRED FOR WIND AND LOW RELATIVE HUMIDITY FOR NORTH CENTRAL AND NORTHEAST SOUTH DAKOTA AND WESTERN MINNESOTA... Wind speeds have begun to diminish, and relative humidities will begin to rise with the loss of daytime heating. Therefore, the Red Flag Warning has been allowed to expire. $$ Parkin
Nearby
Red Flag Warnings in South Dakota, 2021Red 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.