Alert archive / South Dakota / Winter Storm Warnings in 2021
Winter Storm Warning 4, NWS Aberdeen, SD
NWS Aberdeen, SD issued this winter storm warning at Dec 17, 2021, 6:29 PM CST for 4 counties in South Dakota; Traverse County, Minnesota. It was in force for 6 hr. 9 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
- Dec 17, 2021, 6:29 PM CST (00:29 UTC)
- Expired
- Dec 18, 2021, 12:00 AM CST
- In force
- 6 hr
- Issued by
- NWS Aberdeen, SD
Counties Traverse County, MN, Brown County, SD, Day County, SD, Marshall County, SD, Roberts County, SD
The radar
The Aberdeen radar (KABR), 81 km from the middle of the area, began a volume at 00:31 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Dec 17, 6:30 PM CST | HEAVY SNOW 8 | Hecla, SD | MEASURED AROUND 630PM CST. STILL SNOWING. |
| Dec 17, 7:45 PM CST | HEAVY SNOW 6.5 | 1 Ene Pickerel Lake Sta, SD | STORM TOTAL SNOW THUS FAR ESTIMATED AT 6.5 INCHES AND STILL SNOWING. |
| Dec 17, 8:00 PM CST | HEAVY SNOW 10 | 4 W Claire City, SD | 10 INCHES OF STORM TOTAL SNOW ACCUMULATION. STILL SNOWING. |
| Dec 17, 8:05 PM CST | HEAVY SNOW 8 | 1 Nnw Kidder, SD | STORM TOTAL SNOWFALL SO FAR. STILL SNOWING. |
| Dec 17, 8:20 PM CST | SNOW 4.5 | Browns Valley, MN | ESTIMATED STORM TOTAL SNOW OF 4 TO 5 INCHES. STILL SNOWING. |
| Dec 17, 8:30 PM CST | HEAVY SNOW 11 | 7 Wnw Hecla, SD | STORM TOTAL SNOWFALL SO FAR. STILL SNOWING. |
| Dec 17, 8:40 PM CST | SNOW 5 | 4 Se Ferney, SD | STORM TOTAL SNOWFALL SO FAR. STILL SNOWING. REPORT RELAYED VIA SOCIAL MEDIA. |
| Dec 17, 9:10 PM CST | SNOW 3 | Wheaton, MN | ESTIMATED STORM TOTAL SNOW IS 3 TO 3.5 INCHES. STILL SNOWING. |
| Dec 17, 11:50 PM CST | HEAVY SNOW 9.7 | Sisseton, SD | 0.47 INCHES OF LIQUID EQUIVALENT. LIGHT SNOW CONTINUES TO FALL AT THIS TIME. |
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, 0.5 hours before the alert went out and 113 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
- 616 m above ground
- 0-6 km bulk shear
- 42 kt
- 0-1 km storm-relative helicity
- 245 m²/s²
- 0-3 km storm-relative helicity
- 243 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
698 WWUS43 KABR 180029 WSWABR URGENT - WINTER WEATHER MESSAGE National Weather Service Aberdeen SD 629 PM CST Fri Dec 17 2021 MNZ039-180600- /O.UPG.KABR.WW.Y.0014.000000T0000Z-211218T0600Z/ /O.NEW.KABR.WS.W.0004.211218T0029Z-211218T0600Z/ Traverse- Including the city of Wheaton 629 PM CST Fri Dec 17 2021 ...WINTER STORM WARNING IN EFFECT UNTIL MIDNIGHT CST TONIGHT... * WHAT...Heavy snow. Additional snow accumulations of 2 to 4 inches. Storm total snow accumulation of 4 to 8 inches. * WHERE...Traverse County. * WHEN...Until midnight CST tonight. * IMPACTS...Plan on slippery road conditions. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions can be obtained at 511mn.org, or by calling 5 1 1. && $$ SDZ008-180600- /O.UPG.KABR.WW.Y.0014.000000T0000Z-211218T0600Z/ /O.NEW.KABR.WS.W.0004.211218T0029Z-211218T0600Z/ Roberts- Including the city of Sisseton 629 PM CST Fri Dec 17 2021 ...WINTER STORM WARNING IN EFFECT UNTIL MIDNIGHT CST TONIGHT... * WHAT...Heavy snow. Additional snow accumulations of 2 to 4 inches. Storm total snow accumulation 5 to 10 inches. * WHERE...Roberts County. * WHEN...Until midnight CST tonight. * IMPACTS...Plan on slippery road conditions. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions can be obtained by calling 5 1 1. && $$ SDZ011-180600- /O.UPG.KABR.WW.Y.0014.000000T0000Z-211218T0600Z/ /O.NEW.KABR.WS.W.0004.211218T0029Z-211218T0600Z/ Day- Including the city of Webster 629 PM CST Fri Dec 17 2021 ...WINTER STORM WARNING IN EFFECT UNTIL MIDNIGHT CST TONIGHT... * WHAT...Heavy snow. Additional snow accumulations of 2 to 4 inches. Storm total snow accumulation of 4 to 8 inches. * WHERE...Day County. * WHEN...Until midnight CST tonight. * IMPACTS...Plan on slippery road conditions. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions can be obtained by calling 5 1 1. && $$ SDZ007-180600- /O.UPG.KABR.WW.Y.0014.000000T0000Z-211218T0600Z/ /O.NEW.KABR.WS.W.0004.211218T0029Z-211218T0600Z/ Marshall- Including the city of Britton 629 PM CST Fri Dec 17 2021 ...WINTER STORM WARNING IN EFFECT UNTIL MIDNIGHT CST TONIGHT... * WHAT...Heavy snow. Additional snow accumulations of 2 to 4 inches. Storm total snow accumulation of 5 to 10 inches. * WHERE...Marshall County. * WHEN...Until midnight CST tonight. * IMPACTS...Plan on slippery road conditions. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions can be obtained by calling 5 1 1. && $$ SDZ006-180600- /O.UPG.KABR.WW.Y.0014.000000T0000Z-211218T0600Z/ /O.NEW.KABR.WS.W.0004.211218T0029Z-211218T0600Z/ Brown- Including the city of Aberdeen 629 PM CST Fri Dec 17 2021 ...WINTER STORM WARNING IN EFFECT UNTIL MIDNIGHT CST TONIGHT... * WHAT...Heavy snow. Additional snow accumulations of 1 to 3 inch. Storm total snow accumulation of 3 to 8 inches. * WHERE...Brown County. * WHEN...Until midnight CST tonight. * IMPACTS...Plan on slippery road conditions. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions can be obtained by calling 5 1 1. && $$ MNZ046-SDZ018>021-180600- /O.NEW.KABR.WW.Y.0015.211218T0029Z-211218T0600Z/ Big Stone-Spink-Clark-Codington-Grant- Including the cities of Ortonville, Redfield, Clark, Watertown, and Milbank 629 PM CST Fri Dec 17 2021 ...WINTER WEATHER ADVISORY IN EFFECT UNTIL MIDNIGHT CST TONIGHT... * WHAT...Snow. Additional snow accumulations of 1 to 3 inches. Storm total snow accumulation of 2 to 6 inches. * WHERE...In South Dakota, Spink, Clark, Codington and Grant Counties. In Minnesota, Big Stone County. * WHEN...Until midnight CST tonight. * IMPACTS...Plan on slippery road conditions. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. In Minnesota, the latest road conditions can be obtained at 511mn.org, or by calling 5 1 1. In South Dakota, the latest road conditions can be obtained by calling 5 1 1. && $$ Dorn
1 follow-up statement
497 WWUS43 KABR 180550 WSWABR URGENT - WINTER WEATHER MESSAGE National Weather Service Aberdeen SD 1150 PM CST Fri Dec 17 2021 SDZ006-180700- /O.EXP.KABR.WS.W.0004.000000T0000Z-211218T0600Z/ Brown- Including the city of Aberdeen 1150 PM CST Fri Dec 17 2021 ...WINTER STORM WARNING WILL EXPIRE AT MIDNIGHT CST TONIGHT... There are still a few pockets of flurries or light snow over northeast South Dakota. But, significant accumulating snow is no longer a concern. $$ SDZ007-180700- /O.EXP.KABR.WS.W.0004.000000T0000Z-211218T0600Z/ Marshall- Including the city of Britton 1150 PM CST Fri Dec 17 2021 ...WINTER STORM WARNING WILL EXPIRE AT MIDNIGHT CST TONIGHT... There are still a few pockets of flurries or light snow over northeast South Dakota. But, significant accumulating snow is no longer a concern. $$ SDZ011-180700- /O.EXP.KABR.WS.W.0004.000000T0000Z-211218T0600Z/ Day- Including the city of Webster 1150 PM CST Fri Dec 17 2021 ...WINTER STORM WARNING WILL EXPIRE AT MIDNIGHT CST TONIGHT... There are still a few pockets of flurries or light snow over northeast South Dakota. But, significant accumulating snow is no longer a concern. $$ SDZ008-180700- /O.EXP.KABR.WS.W.0004.000000T0000Z-211218T0600Z/ Roberts- Including the city of Sisseton 1150 PM CST Fri Dec 17 2021 ...WINTER STORM WARNING WILL EXPIRE AT MIDNIGHT CST TONIGHT... There are still a few pockets of flurries or light snow over northeast South Dakota. But, significant accumulating snow is no longer a concern. $$ MNZ039-180700- /O.EXP.KABR.WS.W.0004.000000T0000Z-211218T0600Z/ Traverse- Including the city of Wheaton 1150 PM CST Fri Dec 17 2021 ...WINTER STORM WARNING WILL EXPIRE AT MIDNIGHT CST TONIGHT... There are still a few pockets of flurries or light snow over western Minnesota. But, significant accumulating snow is no longer a concern. $$ MNZ046-SDZ018>021-180700- /O.EXP.KABR.WW.Y.0015.000000T0000Z-211218T0600Z/ Big Stone-Spink-Clark-Codington-Grant- Including the cities of Ortonville, Redfield, Clark, Watertown, and Milbank 1150 PM CST Fri Dec 17 2021 ...WINTER WEATHER ADVISORY WILL EXPIRE AT MIDNIGHT CST TONIGHT... There are still a few pockets of flurries or light snow over northeast South Dakota and western Minnesota. But, significant accumulating snow is no longer a concern. $$ Dorn
The office that day
Everything else NWS Aberdeen, SD issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 17, 6:29 PM CST | Winter Weather Advisory | ABR | Clark, Codington, Grant, Spink | 6 hr |
Nearby
Winter Storm Warnings in South Dakota, 2021Winter Storm Warnings in Minnesota, 2021Every winter storm 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; radar from the NEXRAD Level II archive.