Alert archive / South Dakota / Red Flag Warnings in 2021
Red Flag Warning 10, NWS Aberdeen, SD
NWS Aberdeen, SD issued this red flag warning at Apr 5, 2021, 3:32 AM CDT for 18 counties in South Dakota. It took effect at Apr 5, 2021, 1:00 PM CDT. 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
- Apr 5, 2021, 3:32 AM CDT (08:32 UTC)
- In effect from
- Apr 5, 2021, 1:00 PM CDT
- Expired
- Apr 5, 2021, 8:00 PM CDT
- In force
- 7 hr
- Issued by
- NWS Aberdeen, SD
Counties Brown County, SD, Buffalo County, SD, Campbell County, SD, Corson County, SD, Dewey County, SD, Edmunds County, SD, Faulk County, SD, Hand County, SD, Hughes County, SD, Hyde County, SD, Jones County, SD, Lyman County, SD, McPherson County, SD, Potter County, SD, Spink County, SD, Stanley County, SD, Sully County, SD, Walworth County, SD
The radar
The Aberdeen radar (KABR), 121 km from the middle of the area, began a volume at 08:31 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 106 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
- 3734 m above ground
- 0-6 km bulk shear
- 45 kt
- 0-1 km storm-relative helicity
- 146 m²/s²
- 0-3 km storm-relative helicity
- 492 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
594 WWUS83 KABR 050832 RFWABR URGENT - FIRE WEATHER MESSAGE National Weather Service Aberdeen SD 332 AM CDT Mon Apr 5 2021 SDZ015-033-035-036-045-048-051-051645- /O.NEW.KABR.FW.W.0010.210405T1800Z-210406T0000Z/ Dewey-Stanley-Hughes-Hyde-Jones-Lyman-Buffalo- 332 AM CDT Mon Apr 5 2021 /232 AM MDT Mon Apr 5 2021/ ...RED FLAG WARNING IN EFFECT FROM 1 PM CDT /NOON MDT/ THIS AFTERNOON TO 7 PM CDT /6 PM MDT/ THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR CENTRAL SOUTH DAKOTA... The National Weather Service in Aberdeen has issued a Red Flag Warning for wind and low relative humidity, which is in effect from 1 PM CDT /noon MDT/ this afternoon to 7 PM CDT /6 PM MDT/ this evening. * AFFECTED AREA...In South Dakota, Dewey, Stanley, Hughes, Hyde, Jones, Lyman and Buffalo. * WINDS...North 15 to 25 mph with gusts up to 40 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. && $$
3 follow-up statements
282 WWUS83 KABR 051432 RFWABR URGENT - FIRE WEATHER MESSAGE National Weather Service Aberdeen SD 932 AM CDT Mon Apr 5 2021 SDZ003>006-009-010-016>018-034-037-052245- /O.EXA.KABR.FW.W.0010.210405T1800Z-210406T0000Z/ Corson-Campbell-McPherson-Brown-Walworth-Edmunds-Potter-Faulk- Spink-Sully-Hand- 932 AM CDT Mon Apr 5 2021 /832 AM MDT Mon Apr 5 2021/ ...RED FLAG WARNING IN EFFECT FROM 1 PM CDT /NOON MDT/ THIS AFTERNOON TO 7 PM CDT /6 PM MDT/ THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR NORTH CENTRAL AND NORTHEAST SOUTH DAKOTA... The National Weather Service in Aberdeen has issued a Red Flag Warning for wind and low relative humidity, which is in effect from 1 PM CDT /noon MDT/ this afternoon to 7 PM CDT /6 PM MDT/ this evening. * AFFECTED AREA...In South Dakota, Corson, Campbell, McPherson, Brown, Walworth, Edmunds, Potter, Faulk, Spink, Sully and Hand. * WINDS...North 15 to 25 mph with gusts from 35 to 45 mph. * RELATIVE HUMIDITY...15 to 20 percent. * IMPACTS...The combination of gusty winds and low relative humidity will produce critical fire weather conditions. Any fires will spread rapidly and become difficult to control and suppress. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. A combination of strong winds, low relative humidity, and warm temperatures can contribute to extreme fire behavior. && $$ SDZ015-033-035-036-045-048-051-052245- /O.CON.KABR.FW.W.0010.210405T1800Z-210406T0000Z/ Dewey-Stanley-Hughes-Hyde-Jones-Lyman-Buffalo- 932 AM CDT Mon Apr 5 2021 /832 AM MDT Mon Apr 5 2021/ ...RED FLAG WARNING REMAINS IN EFFECT FROM 1 PM CDT /NOON MDT/ THIS AFTERNOON TO 7 PM CDT /6 PM MDT/ THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR CENTRAL SOUTH DAKOTA... * AFFECTED AREA...In South Dakota, Dewey, Stanley, Hughes, Hyde, Jones, Lyman and Buffalo. * WINDS...North 15 to 25 mph with gusts up to 40 mph. * RELATIVE HUMIDITY...10 to 20 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. && $$ TMT
464 WWUS83 KABR 052059 RFWABR URGENT - FIRE WEATHER MESSAGE National Weather Service Aberdeen SD 359 PM CDT Mon Apr 5 2021 SDZ003>006-009-010-015>018-033>037-045-048-051-060100- /O.EXT.KABR.FW.W.0010.000000T0000Z-210406T0100Z/ Corson-Campbell-McPherson-Brown-Walworth-Edmunds-Dewey-Potter- Faulk-Spink-Stanley-Sully-Hughes-Hyde-Hand-Jones-Lyman-Buffalo- 359 PM CDT Mon Apr 5 2021 /259 PM MDT Mon Apr 5 2021/ ...RED FLAG WARNING NOW IN EFFECT UNTIL 8 PM CDT /7 PM MDT/ THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR NORTH CENTRAL AND NORTHEAST SOUTH DAKOTA... * AFFECTED AREA...In South Dakota, Corson, Campbell, McPherson, Brown, Walworth, Edmunds, Dewey, Potter, Faulk, Spink, Stanley, Sully, Hughes, Hyde, Hand, Jones, Lyman and Buffalo. * WINDS...North 15 to 25 mph with gusts up to 40 mph. * RELATIVE HUMIDITY...15 to 20 percent. * IMPACTS...The combination of gusty winds and low relative humidity will produce critical fire weather conditions. Any fires will spread rapidly and become difficult to control and suppress. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. A combination of strong winds, low relative humidity, and warm temperatures can contribute to extreme fire behavior. && $$ TMT
198 WWUS83 KABR 060057 RFWABR URGENT - FIRE WEATHER MESSAGE National Weather Service Aberdeen SD 757 PM CDT Mon Apr 5 2021 SDZ003>006-009-010-015>018-033>037-045-048-051-060200- /O.EXP.KABR.FW.W.0010.000000T0000Z-210406T0100Z/ Corson-Campbell-McPherson-Brown-Walworth-Edmunds-Dewey-Potter- Faulk-Spink-Stanley-Sully-Hughes-Hyde-Hand-Jones-Lyman-Buffalo- 757 PM CDT Mon Apr 5 2021 /657 PM MDT Mon Apr 5 2021/ ...RED FLAG WARNING WILL EXPIRE AT 8 PM CDT /7 PM MDT/ THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR NORTH CENTRAL AND NORTHEAST SOUTH DAKOTA... Winds speeds are still rather breezy, and will remain so for another hour or two. However, relative humidity values are beginning to slowly recover. The Red Flag Warning can be allowed to expire on time. $$ Dorn
Nearby
Red Flag Warnings in South Dakota, 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.