Alert archive / South Dakota / Blizzard Warnings in 2021
Blizzard Warning 2, NWS Aberdeen, SD
NWS Aberdeen, SD issued this blizzard warning at Nov 11, 2021, 3:47 AM CST for 8 counties in South Dakota; Big Stone County, Traverse County, Minnesota. It took effect at Nov 11, 2021, 6:00 PM CST. It was in force for 18 hr. 25 reports came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Nov 11, 2021, 3:47 AM CST (09:47 UTC)
- In effect from
- Nov 11, 2021, 6:00 PM CST
- Expired
- Nov 12, 2021, 12:00 PM CST
- In force
- 18 hr
- Issued by
- NWS Aberdeen, SD
Counties Big Stone County, MN, Traverse County, MN, Clark County, SD, Codington County, SD, Day County, SD, Deuel County, SD, Grant County, SD, Hamlin County, SD, Marshall County, SD, Roberts County, SD
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Nov 11, 6:00 PM CST | BLIZZARD | Webster, SD | 1/4MI OR LESS VISIBILITY IN FALLING SNOW AND STRONG WINDS GUSTING TO 40MPH OR HIGHER MOST ALL OF THURSDAY NIGHT. |
| Nov 11, 8:00 PM CST | BLIZZARD | 1 Wsw Hillhead, SD | 4-5 INCHES OF SNOW. GUSTS ESTIMATED AT OR ABOVE 45 MPH MOST OF THE NIGHT. VISBY 1/4 MI OR LESS MOST OF THURSDAY NIGHT. |
| Nov 11, 9:00 PM CST | BLIZZARD | Watertown, SD | GUSTS WELL IN EXCESS OF 35 MPH WITH FALLING SNOW. VISIBILITY LESS THAN 1/4MI, PARTICULARLY IN RURAL AREAS THROUGH ~ 8 AM CST FRIDAY, NOV 12. |
| Nov 12, 12:00 AM CST | BLIZZARD | 6 Nne Goodwin, SD | 1/4MI VISIBILITY IN FALLING SNOW AND WIND GUSTS IN EXCESS OF 35 MPH THURSDAY NIGHT. WORST OF THE CONDITIONS BETWEEN MIDNIGHT AND 930 AM CST FRIDAY. ~ 2 INCHES OF SNOW. |
| Nov 12, 12:00 AM CST | BLIZZARD | Ortonville, MN | VISIBILITY LESS THAN 1/4MI OFF AND ON THURSDAY NIGHT. WORST OF THE BLIZZARD CONDITIONS BETWEEN MIDNIGHT CST AND 6 AM CST FRIDAY. WINDS IN EXCESS OF 35 MPH THURSDAY NIGHT. 1-2 INCHES OF SNOWFALL. |
| Nov 12, 12:00 AM CST | BLIZZARD | Wheaton, MN | VISIBILITY LESS THEN 1/4MI IN WIND GUSTS IN EXCESS OF 35 MPH FOR MUCH OF THURSDAY NIGHT. WORST CONDITIONS FELT BETWEEN MIDNIGHT CST AND 6 AM CST FRIDAY. |
| Nov 12, 6:00 AM CST | SNOW 0.9 | 4 Se Watertown, SD | CO-OP OBSERVER STATION WATS2 WATERTOWN 2 S. |
| Nov 12, 6:00 AM CST | SNOW 3.2 | Clark, SD | CO-OP OBSERVER STATION CAKS2 CLARK. |
| Nov 12, 7:00 AM CST | SNOW 0.1 | 10 Ene Sisseton, SD | COCORAHS STATION SD-RB-4 BROWNS VALLEY 6 N. |
| Nov 12, 7:00 AM CST | SNOW 0.9 | Castlewood, SD | CO-OP OBSERVER STATION CLWS2 CASTLEWOOD. |
| Nov 12, 7:00 AM CST | SNOW 1 | Britton, SD | CO-OP OBSERVER STATION BRIS2 BRITTON. |
| Nov 12, 7:00 AM CST | SNOW 1.7 | 4 W Sisseton, SD | COCORAHS STATION SD-RB-1 SISSETON 3 W. |
| Nov 12, 7:00 AM CST | SNOW 1.7 | 4 W Sisseton, SD | CO-OP OBSERVER STATION SIWS2 SISSETON 3 W. |
| Nov 12, 7:00 AM CST | SNOW 4.5 | 2 Se Roslyn, SD | COCORAHS STATION SD-DY-17 ROSLYN 2 SE. |
| Nov 12, 7:30 AM CST | SNOW 1 | Milbank, SD | CO-OP OBSERVER STATION MLBS2 MILBANK. |
| Nov 12, 8:00 AM CST | SNOW 0.4 | 1 Wnw Hayti, SD | CO-OP OBSERVER STATION HYTS2 HAYTI 1 W. |
| Nov 12, 8:00 AM CST | SNOW 1 | 1 Ene Ortonville, MN | CO-OP OBSERVER STATION ORVM5 ORTONVILLE 1 N. |
| Nov 12, 8:00 AM CST | SNOW 1.2 | 1 Ese Wheaton, MN | CO-OP OBSERVER STATION WHTM5 WHEATON. |
| Nov 12, 8:00 AM CST | SNOW 1.6 | 2 Wnw Roy Lake State Pa, SD | CO-OP OBSERVER STATION ROYS2 LAKE CITY 3 W. |
| Nov 12, 8:00 AM CST | SNOW 5 | 1 Wsw Webster, SD | CO-OP OBSERVER STATION WBRS2 WEBSTER. |
| Nov 12, 8:46 AM CST | BLIZZARD | 1 Wnw Summit, SD | VIDEO FROM SOCIAL MEDIA SHOWS WHITE OUT CONDITIONS NEAR SUMMIT. |
| Nov 12, 8:52 AM CST | BLIZZARD | Clark, SD | QUARTER MILE VISIBILITY IN AND AROUND CLARK. BLIZZARD CONDITIONS BEGAN AROUND 9 PM, NOVEMBER 11TH. |
| Nov 12, 9:00 AM CST | BLIZZARD | 2 Ssw Summit, SD | EMERGENCY MANAGER REPORTED OFF AND ON WHITE OUT CONDITIONS SOUTH OF SUMMIT. |
| Nov 12, 10:00 AM CST | BLIZZARD | 3 W Sisseton, SD | BLIZZARD CONDITIONS FOR MOST OF THE NIGHT INTO THE MORNING HOURS ON THE 12TH. CONDITIONS ARE IMPROVING AS OF 8 AM. |
| Nov 12, 12:00 PM CST | SNOW 1.2 | Andover, SD | CO-OP OBSERVER STATION ANVS2 ANDOVER. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Aberdeen, SD (KABR), launched 00:00Z, 9.8 hours before the alert went out and 112 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
- 559 m above ground
- 0-6 km bulk shear
- 21 kt
- 0-1 km storm-relative helicity
- -88 m²/s²
- 0-3 km storm-relative helicity
- -87 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
944 WWUS43 KABR 110947 WSWABR URGENT - WINTER WEATHER MESSAGE National Weather Service Aberdeen SD 347 AM CST Thu Nov 11 2021 MNZ039-046-SDZ007-008-011-019>023-111800- /O.UPG.KABR.WS.A.0002.211112T0000Z-211113T0000Z/ /O.NEW.KABR.BZ.W.0002.211112T0000Z-211113T0000Z/ Traverse-Big Stone-Marshall-Roberts-Day-Clark-Codington-Grant- Hamlin-Deuel- Including the cities of Wheaton, Ortonville, Britton, Sisseton, Webster, Clark, Watertown, Milbank, Hayti, and Clear Lake 347 AM CST Thu Nov 11 2021 ...BLIZZARD WARNING IN EFFECT FROM 6 PM THIS EVENING TO 6 PM CST FRIDAY... * WHAT...Blizzard conditions expected. Total snow accumulations of 2 to 6 inches. Winds gusting as high as 55 mph. * WHERE...Portions of northeast South Dakota and west central Minnesota. * WHEN...From 6 PM this evening to 6 PM CST Friday. * IMPACTS...Plan on slippery road conditions. Blowing snow could significantly reduce visibility. The hazardous conditions will impact the morning or evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... Travel should be restricted to emergencies only. If you must travel, have a winter survival kit with you. If you get stranded, stay with your vehicle. In Minnesota, the latest road conditions can be obtained at 511mn.org, or by calling 5 1 1. In South Dakota, the latest road conditions can be obtained by calling 5 1 1. && $$ SDZ006-018-111800- /O.NEW.KABR.WW.Y.0009.211111T2100Z-211112T1800Z/ Brown-Spink- Including the cities of Aberdeen and Redfield 347 AM CST Thu Nov 11 2021 ...WINTER WEATHER ADVISORY IN EFFECT FROM 3 PM THIS AFTERNOON TO NOON CST FRIDAY... * WHAT...Snow expected. Total snow accumulations of 1 to 3 inches. Winds gusting as high as 55 mph. * WHERE...Brown and Spink Counties. * WHEN...From 3 PM this afternoon to noon CST Friday. * IMPACTS...Plan on slippery road conditions. Patchy blowing snow could significantly reduce visibility. The hazardous conditions could impact the morning or evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions can be obtained by calling 5 1 1. && $$ Mohr
5 follow-up statements
592 WWUS43 KABR 111650 WSWABR URGENT - WINTER WEATHER MESSAGE National Weather Service Aberdeen SD 1050 AM CST Thu Nov 11 2021 MNZ039-046-SDZ007-008-011-019>023-120100- /O.CON.KABR.BZ.W.0002.211112T0000Z-211113T0000Z/ Traverse-Big Stone-Marshall-Roberts-Day-Clark-Codington-Grant- Hamlin-Deuel- Including the cities of Wheaton, Ortonville, Britton, Sisseton, Webster, Clark, Watertown, Milbank, Hayti, and Clear Lake 1050 AM CST Thu Nov 11 2021 ...BLIZZARD WARNING REMAINS IN EFFECT FROM 6 PM THIS EVENING TO 6 PM CST FRIDAY... * WHAT...Blizzard conditions expected. Total snow accumulations of 2 to 4 inches, with locally higher amounts. Winds gusting as high as 55 mph. * WHERE...Portions of northeast South Dakota and west central Minnesota. * WHEN...From 6 PM this evening to 6 PM CST Friday. * IMPACTS...Plan on slippery road conditions. The combination of strong winds and falling snow will significantly reduce visibility. Patchy blowing snow will add to the hazardous driving conditions, which are expected to impact the Friday morning commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... Travel should be restricted to emergencies only. If you must travel, have a winter survival kit with you. If you get stranded, stay with your vehicle. In Minnesota, the latest road conditions can be obtained at 511mn.org, or by calling 5 1 1. In South Dakota, the latest road conditions can be obtained by calling 5 1 1. && $$ SDZ006-018-120100- /O.CON.KABR.WW.Y.0009.211111T2100Z-211112T1800Z/ Brown-Spink- Including the cities of Aberdeen and Redfield 1050 AM CST Thu Nov 11 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 3 PM THIS AFTERNOON TO NOON CST FRIDAY... * WHAT...Snow expected. Total snow accumulations of 1 to 3 inches. Winds gusting as high as 60 mph. * WHERE...Spink and Brown Counties. * WHEN...From 3 PM this afternoon to noon CST Friday. * IMPACTS...Plan on slippery road conditions. Patchy blowing snow could significantly reduce visibility. The hazardous conditions could impact the Friday morning commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions can be obtained by calling 5 1 1. && $$ Dorn
650 WWUS43 KABR 112043 WSWABR URGENT - WINTER WEATHER MESSAGE National Weather Service Aberdeen SD 243 PM CST Thu Nov 11 2021 MNZ039-046-SDZ007-008-011-019>023-120445- /O.CON.KABR.BZ.W.0002.211112T0000Z-211113T0000Z/ Traverse-Big Stone-Marshall-Roberts-Day-Clark-Codington-Grant- Hamlin-Deuel- Including the cities of Wheaton, Ortonville, Britton, Sisseton, Webster, Clark, Watertown, Milbank, Hayti, and Clear Lake 243 PM CST Thu Nov 11 2021 ...BLIZZARD WARNING REMAINS IN EFFECT FROM 6 PM THIS EVENING TO 6 PM CST FRIDAY... * WHAT...Blizzard conditions expected. Total snow accumulations of 2 to 5 inches, with locally higher amounts. Winds gusting as high as 55 mph. * WHERE...Portions of northeast South Dakota and west central Minnesota. * WHEN...From 6 PM this evening to 6 PM CST Friday. * IMPACTS...Plan on slippery road conditions. The combination of strong winds and falling snow will significantly reduce visibility. Patchy blowing snow will add to the hazardous driving conditions, which are expected to impact the Friday morning commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... Travel should be restricted to emergencies only. If you must travel, have a winter survival kit with you. If you get stranded, stay with your vehicle. In Minnesota, the latest road conditions can be obtained at 511mn.org, or by calling 5 1 1. In South Dakota, the latest road conditions can be obtained by calling 5 1 1. && $$ SDZ006-018-120445- /O.CON.KABR.WW.Y.0009.211111T2100Z-211112T1800Z/ Brown-Spink- Including the cities of Aberdeen and Redfield 243 PM CST Thu Nov 11 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL NOON CST FRIDAY... * WHAT...Snow expected. Total snow accumulation up to 2 inches. Winds gusting as high as 60 mph. * WHERE...Spink and Brown Counties. * WHEN...Until noon CST Friday. * IMPACTS...Plan on slippery road conditions. Patchy blowing snow could significantly reduce visibility. The hazardous conditions could impact the Friday morning commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions can be obtained by calling 5 1 1. && $$ Dorn
098 WWUS43 KABR 120243 WSWABR URGENT - WINTER WEATHER MESSAGE National Weather Service Aberdeen SD 843 PM CST Thu Nov 11 2021 MNZ039-046-SDZ007-008-011-019>023-121445- /O.CON.KABR.BZ.W.0002.000000T0000Z-211113T0000Z/ Traverse-Big Stone-Marshall-Roberts-Day-Clark-Codington-Grant- Hamlin-Deuel- Including the cities of Wheaton, Ortonville, Britton, Sisseton, Webster, Clark, Watertown, Milbank, Hayti, and Clear Lake 843 PM CST Thu Nov 11 2021 ...BLIZZARD WARNING REMAINS IN EFFECT UNTIL 6 PM CST FRIDAY... * WHAT...Blizzard conditions. Additional snow accumulations of 2 to 4 inches. Winds gusting as high as 55 mph. * WHERE...Portions of northeast South Dakota and west central Minnesota. * WHEN...Until 6 PM CST Friday. * IMPACTS...Plan on slippery road conditions. Patchy blowing snow could significantly reduce visibility. The hazardous conditions could impact the morning or evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... Travel should be restricted to emergencies only. If you must travel, have a winter survival kit with you. If you get stranded, stay with your vehicle. In Minnesota, the latest road conditions can be obtained at 511mn.org, or by calling 5 1 1. In South Dakota, the latest road conditions can be obtained by calling 5 1 1. && $$ SDZ006-018-121445- /O.CON.KABR.WW.Y.0009.000000T0000Z-211112T1800Z/ Brown-Spink- Including the cities of Aberdeen and Redfield 843 PM CST Thu Nov 11 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL NOON CST FRIDAY... * WHAT...Snow. Additional snow accumulations of up to two inches. Winds gusting as high as 60 mph. * WHERE...Spink and Brown Counties. * WHEN...Until noon CST Friday. * IMPACTS...Plan on slippery road conditions. Patchy blowing snow could significantly reduce visibility. The hazardous conditions could impact the morning commute. Strong winds could cause tree damage. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions can be obtained by calling 5 1 1. && $$
974 WWUS43 KABR 120913 WSWABR URGENT - WINTER WEATHER MESSAGE National Weather Service Aberdeen SD 313 AM CST Fri Nov 12 2021 MNZ039-046-SDZ007-008-011-019>023-121800- /O.EXT.KABR.BZ.W.0002.000000T0000Z-211112T1800Z/ Traverse-Big Stone-Marshall-Roberts-Day-Clark-Codington-Grant- Hamlin-Deuel- Including the cities of Wheaton, Ortonville, Britton, Sisseton, Webster, Clark, Watertown, Milbank, Hayti, and Clear Lake 313 AM CST Fri Nov 12 2021 ...BLIZZARD WARNING NOW IN EFFECT UNTIL NOON CST TODAY... * WHAT...Blizzard conditions. Additional snow accumulations of 1 to 3 inches. Locally highest amounts will be across portions of the Glacial Lakes region and the Prairie Coteau. Winds gusting as high as 50 to 55 mph. * WHERE...Portions of northeast South Dakota and west central Minnesota. * WHEN...Until noon CST today. * IMPACTS...Plan on slippery road conditions. Patchy blowing snow could significantly reduce visibility. The hazardous conditions could impact the morning commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... Travel should be restricted to emergencies only. If you must travel, have a winter survival kit with you. If you get stranded, stay with your vehicle. In Minnesota, the latest road conditions can be obtained at 511mn.org, or by calling 5 1 1. In South Dakota, the latest road conditions can be obtained by calling 5 1 1. && $$ SDZ006-018-121800- /O.CON.KABR.WW.Y.0009.000000T0000Z-211112T1800Z/ Brown-Spink- Including the cities of Aberdeen and Redfield 313 AM CST Fri Nov 12 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL NOON CST TODAY... * WHAT...Snow. Additional snow accumulations of one to two inches. Winds gusting as high as 50 to 55 mph. * WHERE...Spink and Brown Counties. * WHEN...Until noon CST Friday. * IMPACTS...Plan on slippery road conditions. Patchy blowing snow could significantly reduce visibility. The hazardous conditions could impact the morning commute. Strong winds could cause tree damage. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions can be obtained by calling 5 1 1. && $$
319 WWUS43 KABR 121750 WSWABR URGENT - WINTER WEATHER MESSAGE National Weather Service Aberdeen SD 1150 AM CST Fri Nov 12 2021 MNZ039-046-SDZ007-008-011-019>023-121900- /O.EXP.KABR.BZ.W.0002.000000T0000Z-211112T1800Z/ Traverse-Big Stone-Marshall-Roberts-Day-Clark-Codington-Grant- Hamlin-Deuel- Including the cities of Wheaton, Ortonville, Britton, Sisseton, Webster, Clark, Watertown, Milbank, Hayti, and Clear Lake 1150 AM CST Fri Nov 12 2021 ...BLIZZARD WARNING WILL EXPIRE AT NOON CST TODAY... Visibility continues to improve, given the limited additional snow, and very slowly weakening winds. Even through winds will slowly weaken, they will still remain out of the north northwest 20 to 25 mph with gusts of 35 to 40 mph by early this evening. Patchy drifting snow will linger into the early evening hours, mainly across the Coteau of northeast South Dakota.. $$ SDZ006-018-121900- /O.EXP.KABR.WW.Y.0009.000000T0000Z-211112T1800Z/ Brown-Spink- Including the cities of Aberdeen and Redfield 1150 AM CST Fri Nov 12 2021 ...WINTER WEATHER ADVISORY WILL EXPIRE AT NOON CST TODAY... Across areas that received light to moderate snow, visibility continues to improve. Winds will slowly weaken through the rest of the day, but will still be out of the north northwest 20 to 25 mph with gusts of 35 to 40 mph by early this evening. $$ KF
The office that day
Everything else NWS Aberdeen, SD issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Nov 11, 3:47 AM CST | Winter Weather Advisory | ABR | Brown, Spink | 32 hr |
Nearby
Blizzard Warnings in South Dakota, 2021Blizzard Warnings in Minnesota, 2021Every blizzard 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive.