Alert archive / South Dakota / Winter Storm Watches in 2018

Winter Storm Watch 5, NWS Sioux Falls, SD

March 15, 20188 counties in South Dakota

NWS Sioux Falls, SD issued this winter storm watch at Mar 15, 2018, 3:48 AM CDT for 8 counties in South Dakota. It took effect at Mar 16, 2018, 4:00 AM CDT. It was in force for .

The area

The counties it named.

The facts

Issued
Mar 15, 2018, 3:48 AM CDT (08:48 UTC)
In effect from
Mar 16, 2018, 4:00 AM CDT
Expired
Mar 15, 2018, 3:28 PM CDT
In force
Issued by
NWS Sioux Falls, SD

Counties Bon Homme County, SD, Brule County, SD, Charles Mix County, SD, Clay County, SD, Douglas County, SD, Gregory County, SD, Hutchinson County, SD, Yankton County, SD

The radar

The Sioux Falls radar (KFSD), 122 km from the middle of the area, began a volume at 08:49 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 forecasters said that day

The local office's own words before this winter storm watch went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Sioux Falls, SD wrote its last area forecast discussion before this winter storm watch went out at Mar 14, 10:53 PM CDT, 4 hours 55 minutes earlier.

Area forecast discussion, Mar 14, 10:53 PM CDT, 4 hours 55 minutes before
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Hazardous weather outlook, Mar 14, 4:31 AM CDT, 23 hours 17 minutes before
Hazardous Weather Outlook
National Weather Service Sioux Falls SD
431 AM CDT Wed Mar 14 2018

IAZ001>003-012>014-020>022-031-032-MNZ071-072-080-081-089-090-097-
098-NEZ013-014-SDZ038>040-050-052>071-150945-
Lyon IA-Osceola-Dickinson-Sioux-O'Brien-Clay IA-Plymouth-Cherokee-
Buena Vista-Woodbury-Ida-Lincoln MN-Lyon MN-Murray-Cottonwood-
Nobles-Jackson-Pipestone-Rock-Dixon-Dakota-Beadle-Kingsbury-
Brookings-Gregory-Jerauld-Sanborn-Miner-Lake-Moody-Brule-Aurora-
Davison-Hanson-McCook-Minnehaha-Charles Mix-Douglas-Hutchinson-
Turner-Lincoln SD-Bon Homme-Yankton-Clay SD-Union-
431 AM CDT Wed Mar 14 2018

This Hazardous Weather Outlook is for portions of northwest Iowa,
west central Iowa, southwest Minnesota, northeast Nebraska,
central South Dakota, east central South Dakota, south central
South Dakota, and southeast South Dakota.

.DAY ONE...Today and Tonight

Hazardous weather is not expected at this time.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday

A storm system will bring the risk for a wintry mix of
precipitation, including freezing rain and snow, to the region
late Thursday night into Friday night. There remains considerable
uncertainty regarding track and temperatures with this system, but
light snow or ice accumulations may impact travel on Friday, so be
sure to monitor the latest forecasts if you have travel plans late
this week.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed.

The office that day

Everything else NWS Sioux Falls, SD issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Mar 15, 3:48 AM CDTWinter Weather AdvisoryFSDAurora, Beadle, Clay, Davison, Hanson, Jerauld and 10 more45 hr
Mar 15, 3:28 PM CDTWinter Storm WarningFSDAurora, Bon Homme, Brule, Charles Mix, Douglas, Gregory and 2 more31 hr
Mar 15, 8:38 AM CDTRiver Flood WarningFSDClay, Dickinson56 hr
Mar 15, 8:38 AM CDTRiver Flood WarningFSDClay60 hr

Nearby

Winter Storm Watches in South Dakota, 2018Every winter storm watch in 2018

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive.