Alert archive / Iowa / Winter Weather Advisories in 2020

Winter Weather Advisory 13, NWS Sioux Falls, SD

February 18, 20204 counties in South Dakota; 5 counties in Iowa

NWS Sioux Falls, SD issued this winter weather advisory at Feb 18, 2020, 3:00 PM CST for 4 counties in South Dakota; 5 counties in Iowa. It took effect at Feb 19, 2020, 2:00 AM CST. It was in force for 16 hr.

The area

The counties it named.

The facts

Issued
Feb 18, 2020, 3:00 PM CST (21:00 UTC)
In effect from
Feb 19, 2020, 2:00 AM CST
Expired
Feb 19, 2020, 6:00 PM CST
In force
16 hr
Issued by
NWS Sioux Falls, SD

Counties Buena Vista County, IA, Cherokee County, IA, Ida County, IA, Plymouth County, IA, Woodbury County, IA, Bon Homme County, SD, Clay County, SD, Union County, SD, Yankton County, SD

The radar

The Sioux Falls radar (KFSD), 97 km from the middle of the area, began a volume at 21:04 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 weather advisory 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 weather advisory went out at Feb 18, 11:25 AM CST, 3 hours 35 minutes earlier.

Area forecast discussion, Feb 18, 11:25 AM CST, 3 hours 35 minutes before
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Hazardous weather outlook, Feb 18, 3:49 AM CST, 11 hours 11 minutes before
Hazardous Weather Outlook
National Weather Service Sioux Falls SD
349 AM CST Tue Feb 18 2020

IAZ020-031-NEZ013-014-SDZ050-063-068>071-191000-
Plymouth-Woodbury-Dixon-Dakota-Gregory-Charles Mix-Bon Homme-
Yankton-Clay-Union-
349 AM CST Tue Feb 18 2020

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

.DAY ONE...Today and Tonight

Light snow may develop across the area tonight with up to a half
to one inch of accumulation by early Wednesday morning.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday

Light snow chances will continue into Wednesday. Snowfall totals
by Wednesday afternoon will average around an inch, though up to
2 inches near the Nebraska border.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed.

IAZ001>003-012>014-021-022-032-MNZ071-072-080-081-089-090-097-098-
SDZ038>040-052>062-064>067-191000-
Lyon-Osceola-Dickinson-Sioux-O'Brien-Clay-Cherokee-Buena Vista-
Ida-Lincoln-Murray-Cottonwood-Nobles-Jackson-Pipestone-Rock-
Beadle-Kingsbury-Brookings-Jerauld-Sanborn-Miner-Lake-Moody-Brule-
Aurora-Davison-Hanson-McCook-Minnehaha-Douglas-Hutchinson-Turner-
349 AM CST Tue Feb 18 2020

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

.DAY ONE...Today and Tonight

Very cold temperatures will result in wind chills of 10 below to
20 below zero for tonight into Wednesday morning, and 10 below to
25 below zero on Wednesday night into Thursday morning.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed.

In the hours before

Local storm report, Feb 18, 9:01 AM CST, 5 hours 59 minutes before
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Local storm report, Feb 18, 12:09 PM CST, 2 hours 51 minutes before
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      <h1 id="headline">This service is currently unavailable.</h1>
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Nearby

Winter Weather Advisories in Iowa, 2020Winter Weather Advisories in South Dakota, 2020Every winter weather advisory in 2020

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.