Alert archive / Iowa / Wind Chill Advisories in 2021
Wind Chill Advisory 4, NWS Sioux Falls, SD
NWS Sioux Falls, SD issued this wind chill advisory at Feb 11, 2021, 2:45 PM CST for 8 counties in Minnesota; 11 counties in Iowa; 10 counties in South Dakota. It took effect at Feb 11, 2021, 10:00 PM CST. It was in force for 14 hr.
The area
The counties it named.
The facts
- Issued
- Feb 11, 2021, 2:45 PM CST (20:45 UTC)
- In effect from
- Feb 11, 2021, 10:00 PM CST
- Expired
- Feb 12, 2021, 12:00 PM CST
- In force
- 14 hr
- Issued by
- NWS Sioux Falls, SD
All 29 counties
Buena Vista County, IA, Cherokee County, IA, Clay County, IA, Dickinson County, IA, Ida County, IA, Lyon County, IA, O'Brien County, IA, Osceola County, IA, Plymouth County, IA, Sioux County, IA, Woodbury County, IA, Cottonwood County, MN, Jackson County, MN, Lincoln County, MN, Lyon County, MN, Murray County, MN, Nobles County, MN, Pipestone County, MN, Rock County, MN, Beadle County, SD, Brookings County, SD, Jerauld County, SD, Kingsbury County, SD, Lake County, SD, Lincoln County, SD, Miner County, SD, Minnehaha County, SD, Moody County, SD, Sanborn County, SD
The radar
The Sioux Falls radar (KFSD), 33 km from the middle of the area, began a volume at 20:42 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 12:00Z, 8.8 hours before the alert went out and 220 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
- 887 m above ground
- 0-6 km bulk shear
- 86 kt
- 0-1 km storm-relative helicity
- -70 m²/s²
- 0-3 km storm-relative helicity
- 144 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
294 WWUS43 KFSD 112045 WSWFSD URGENT - WINTER WEATHER MESSAGE National Weather Service Sioux Falls SD 245 PM CST Thu Feb 11 2021 IAZ002-003-014-022-MNZ071-072-080-081-089-090-097-SDZ040-056- 120445- /O.NEW.KFSD.WC.Y.0004.210212T0500Z-210212T1800Z/ Osceola-Dickinson-Clay-Buena Vista-Lincoln-Lyon-Murray-Cottonwood- Nobles-Jackson-Pipestone-Brookings-Moody- 245 PM CST Thu Feb 11 2021 ...WIND CHILL ADVISORY IN EFFECT FROM 11 PM THIS EVENING TO NOON CST FRIDAY... * WHAT...Very cold wind chills expected. Wind chills as low as 34 below zero. * WHERE...Portions of east central South Dakota, northwest Iowa and southwest Minnesota. This includes the tribal lands of the Flandreau Santee Sioux Tribal Nation. * WHEN...From 11 PM this evening to noon CST Friday. * IMPACTS...The dangerously cold wind chills could cause frostbite on exposed skin in as little as 10 minutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use caution while traveling outside. Wear appropriate clothing, a hat, and gloves. && $$ IAZ001-012-013-021-032-MNZ098-SDZ038-039-052>055-062-067-120445- /O.NEW.KFSD.WC.Y.0004.210212T0800Z-210212T1500Z/ Lyon-Sioux-O'Brien-Cherokee-Ida-Rock-Beadle-Kingsbury-Jerauld- Sanborn-Miner-Lake-Minnehaha-Lincoln- 245 PM CST Thu Feb 11 2021 ...WIND CHILL ADVISORY IN EFFECT FROM 2 AM TO 9 AM CST FRIDAY... * WHAT...Very cold wind chills expected. Wind chills as low as 30 below zero. * WHERE...Portions of central, east central and southeast South Dakota, northwest and west central Iowa and southwest Minnesota. * WHEN...From 2 AM to 9 AM CST Friday. * IMPACTS...The cold wind chills could cause frostbite on exposed skin in as little as 30 minutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use caution while traveling outside. Wear appropriate clothing, a hat, and gloves. && $$ For more information from the National Weather Service visit https://weather.gov/siouxfalls
4 follow-up statements
418 WWUS43 KFSD 120328 WSWFSD URGENT - WINTER WEATHER MESSAGE National Weather Service Sioux Falls SD 928 PM CST Thu Feb 11 2021 IAZ020-031-121130- /O.EXB.KFSD.WC.Y.0004.210212T0700Z-210212T1500Z/ Plymouth-Woodbury- 928 PM CST Thu Feb 11 2021 ...WIND CHILL ADVISORY IN EFFECT FROM 1 AM TO 9 AM CST FRIDAY... * WHAT...Very cold wind chills expected. Wind chills as low as 25 below zero. * WHERE...Plymouth and Woodbury Counties. * WHEN...From 1 AM to 9 AM CST Friday. * IMPACTS...The cold wind chills could cause frostbite on exposed skin in as little as 30 minutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use caution while traveling outside. Wear appropriate clothing, a hat, and gloves. && $$ IAZ002-003-014-022-MNZ071-072-080-081-089-090-097-SDZ040-056- 121130- /O.EXT.KFSD.WC.Y.0004.210212T0400Z-210212T1800Z/ Osceola-Dickinson-Clay-Buena Vista-Lincoln-Lyon-Murray-Cottonwood- Nobles-Jackson-Pipestone-Brookings-Moody- 928 PM CST Thu Feb 11 2021 ...WIND CHILL ADVISORY NOW IN EFFECT UNTIL NOON CST FRIDAY... * WHAT...Very cold wind chills expected. Wind chills as low as 34 below zero. * WHERE...Portions of east central South Dakota, northwest Iowa and southwest Minnesota. This includes the tribal lands of the Flandreau Santee Sioux Tribal Nation. * WHEN...Until noon CST Friday. * IMPACTS...The dangerously cold wind chills could cause frostbite on exposed skin in as little as 10 minutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use caution while traveling outside. Wear appropriate clothing, a hat, and gloves. && $$ IAZ001-012-013-021-032-MNZ098-SDZ038-039-052>055-062-067-121130- /O.EXT.KFSD.WC.Y.0004.210212T0700Z-210212T1500Z/ Lyon-Sioux-O'Brien-Cherokee-Ida-Rock-Beadle-Kingsbury-Jerauld- Sanborn-Miner-Lake-Minnehaha-Lincoln- 928 PM CST Thu Feb 11 2021 ...WIND CHILL ADVISORY NOW IN EFFECT FROM 1 AM TO 9 AM CST FRIDAY... * WHAT...Very cold wind chills expected. Wind chills as low as 30 below zero. * WHERE...Portions of central, east central and southeast South Dakota, northwest and west central Iowa and southwest Minnesota. * WHEN...From 1 AM to 9 AM CST Friday. * IMPACTS...The dangerously cold wind chills could cause frostbite on exposed skin in as little as 10 minutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use caution while traveling outside. Wear appropriate clothing, a hat, and gloves. && $$ For more information from the National Weather Service visit https://weather.gov/siouxfalls
090 WWUS43 KFSD 120945 WSWFSD URGENT - WINTER WEATHER MESSAGE National Weather Service Sioux Falls SD 345 AM CST Fri Feb 12 2021 IAZ002-003-014-022-MNZ071-072-080-081-089-090-097-SDZ040-056- 121745- /O.CON.KFSD.WC.Y.0004.000000T0000Z-210212T1800Z/ Osceola-Dickinson-Clay-Buena Vista-Lincoln-Lyon-Murray-Cottonwood- Nobles-Jackson-Pipestone-Brookings-Moody- 345 AM CST Fri Feb 12 2021 ...WIND CHILL ADVISORY REMAINS IN EFFECT UNTIL NOON CST TODAY... * WHAT...Very cold wind chills expected. Wind chills as low as 25 below to 34 below zero. * WHERE...Portions of east central South Dakota, northwest Iowa and southwest Minnesota. This includes the tribal lands of the Flandreau Santee Sioux Tribal Nation. * WHEN...Until noon CST Friday. * IMPACTS...The dangerously cold wind chills could cause frostbite on exposed skin in as little as 10 minutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use caution while traveling outside. Wear appropriate clothing, a hat, and gloves. && $$ IAZ001-012-013-020-021-031-032-MNZ098-SDZ038-039-052>055-062-067- 121500- /O.CON.KFSD.WC.Y.0004.000000T0000Z-210212T1500Z/ Lyon-Sioux-O'Brien-Plymouth-Cherokee-Woodbury-Ida-Rock-Beadle- Kingsbury-Jerauld-Sanborn-Miner-Lake-Minnehaha-Lincoln- 345 AM CST Fri Feb 12 2021 ...WIND CHILL ADVISORY REMAINS IN EFFECT UNTIL 9 AM CST THIS MORNING... * WHAT...Very cold wind chills expected. Wind chills as low as 25 below to 30 below zero. * WHERE...Portions of central, east central and southeast South Dakota, northwest and west central Iowa and southwest Minnesota. * WHEN...Until 9 AM CST Friday. * IMPACTS...The dangerously cold wind chills could cause frostbite on exposed skin in as little as 10 minutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use caution while traveling outside. Wear appropriate clothing, a hat, and gloves. && $$ For more information from the National Weather Service visit https://weather.gov/siouxfalls
722 WWUS43 KFSD 121443 WSWFSD URGENT - WINTER WEATHER MESSAGE National Weather Service Sioux Falls SD 843 AM CST Fri Feb 12 2021 IAZ001-012-013-020-021-031-032-MNZ098-SDZ038-039-052>055-062-067- 121800- /O.EXT.KFSD.WC.Y.0004.000000T0000Z-210212T1800Z/ Lyon-Sioux-O'Brien-Plymouth-Cherokee-Woodbury-Ida-Rock-Beadle- Kingsbury-Jerauld-Sanborn-Miner-Lake-Minnehaha-Lincoln- 843 AM CST Fri Feb 12 2021 ...WIND CHILL ADVISORY NOW IN EFFECT UNTIL NOON CST TODAY... * WHAT...Very cold wind chills. Wind chills as low as 25 below zero. * WHERE...Portions of central, east central and southeast South Dakota, northwest and west central Iowa and southwest Minnesota. * WHEN...Until noon CST today. * IMPACTS...The dangerously cold wind chills could cause frostbite on exposed skin in as little as 10 minutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use caution while traveling outside. Wear appropriate clothing, a hat, and gloves. && $$ IAZ002-003-014-022-MNZ071-072-080-081-089-090-097-SDZ040-056- 121800- /O.CON.KFSD.WC.Y.0004.000000T0000Z-210212T1800Z/ Osceola-Dickinson-Clay-Buena Vista-Lincoln-Lyon-Murray-Cottonwood- Nobles-Jackson-Pipestone-Brookings-Moody- 843 AM CST Fri Feb 12 2021 ...WIND CHILL ADVISORY REMAINS IN EFFECT UNTIL NOON CST TODAY... * WHAT...Very cold wind chills. Wind chills as low as 30 below zero. * WHERE...Portions of east central South Dakota, northwest Iowa and southwest Minnesota. This includes the tribal lands of the Flandreau Santee Sioux Tribal Nation. * WHEN...Until noon CST today. * IMPACTS...The dangerously cold wind chills could cause frostbite on exposed skin in as little as 10 minutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use caution while traveling outside. Wear appropriate clothing, a hat, and gloves. && $$ For more information from the National Weather Service visit https://weather.gov/siouxfalls
920 WWUS43 KFSD 121753 WSWFSD URGENT - WINTER WEATHER MESSAGE National Weather Service Sioux Falls SD 1153 AM CST Fri Feb 12 2021 IAZ002-003-014-022-MNZ071-072-080-081-089-090-097-SDZ040-056- 121900- /O.EXP.KFSD.WC.Y.0004.000000T0000Z-210212T1800Z/ Osceola-Dickinson-Clay-Buena Vista-Lincoln-Lyon-Murray-Cottonwood- Nobles-Jackson-Pipestone-Brookings-Moody- 1153 AM CST Fri Feb 12 2021 ...WIND CHILL ADVISORY WILL EXPIRE AT NOON CST TODAY... Wind chills will remain between -10 and -20 through the afternoon hours. Continue to use caution if outdoors. $$ IAZ001-012-013-020-021-031-032-MNZ098-SDZ038-039-052>055-062-067- 121900- /O.EXP.KFSD.WC.Y.0004.000000T0000Z-210212T1800Z/ Lyon-Sioux-O'Brien-Plymouth-Cherokee-Woodbury-Ida-Rock-Beadle- Kingsbury-Jerauld-Sanborn-Miner-Lake-Minnehaha-Lincoln- 1153 AM CST Fri Feb 12 2021 ...WIND CHILL ADVISORY WILL EXPIRE AT NOON CST TODAY... Wind chills will remain between -10 and -20 through the afternoon hours. Continue to use caution if outdoors. $$ For more information from the National Weather Service visit https://weather.gov/siouxfalls
Nearby
Wind Chill Advisories in Iowa, 2021Wind Chill Advisories in South Dakota, 2021Wind Chill Advisories in Minnesota, 2021Every wind chill advisory 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.