Alert archive / South Dakota / Frost Advisories in 2019

Frost Advisory 1, NWS Sioux Falls, SD

May 9, 201924 counties in South Dakota; Lyon County, Iowa; 8 counties in Minnesota

NWS Sioux Falls, SD issued this frost advisory at May 9, 2019, 3:38 AM CDT for 24 counties in South Dakota; Lyon County, Iowa; 8 counties in Minnesota. It took effect at May 10, 2019, 2:00 AM CDT. It was in force for 6 hr.

The area

The counties it named.

The facts

Issued: May 9, 2019, 3:38 AM CDT (08:38 UTC)
In effect from: May 10, 2019, 2:00 AM CDT
Expired: May 10, 2019, 8:00 AM CDT
In force: 6 hr
Issued by: NWS Sioux Falls, SD

All 33 counties

Lyon 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, Aurora County, SD, Beadle County, SD, Bon Homme County, SD, Brookings County, SD, Brule County, SD, Charles Mix County, SD, Clay County, SD, Davison County, SD, Douglas County, SD, Gregory County, SD, Hanson County, SD, Hutchinson County, SD, Jerauld County, SD, Kingsbury County, SD, Lake County, SD, Lincoln County, SD, McCook County, SD, Miner County, SD, Minnehaha County, SD, Moody County, SD, Sanborn County, SD, Turner County, SD, Union County, SD, Yankton County, SD

The radar

The Sioux Falls radar (KFSD), 40 km from the middle of the area, began a volume at 08:38 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 frost 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 frost advisory went out at May 8, 3:03 PM CDT, 12 hours 35 minutes earlier.

Area forecast discussion, May 8, 3:03 PM CDT, 12 hours 35 minutes before

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Hazardous weather outlook, May 8, 3:58 AM CDT, 23 hours 40 minutes before

Hazardous Weather Outlook
National Weather Service Sioux Falls SD
358 AM CDT Wed May 8 2019

SDZ038>040-050-052>055-057>061-063>065-068-090900-
Beadle-Kingsbury-Brookings-Gregory-Jerauld-Sanborn-Miner-Lake-Brule-
Aurora-Davison-Hanson-McCook-Charles Mix-Douglas-Hutchinson-
Bon Homme-
358 AM CDT Wed May 8 2019

This Hazardous Weather Outlook is for central South Dakota, east
central South Dakota, south central South Dakota and southeast
South Dakota.

.DAY ONE...Today and tonight.

Widespread rain showers will persist through this evening, gradually
ending tonight. Rainfall amounts of a half inch to an inch are
likely, which could lead to ponding water in poor drainage areas.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday.

Light winds and clearing skies Thursday night could lead to areas of
frost, as temperatures fall into the lower 30s.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

IAZ001>003-012>014-020>022-031-032-MNZ071-072-080-081-089-090-097-
098-NEZ013-014-SDZ056-062-066-067-069>071-090900-
Lyon-Osceola-Dickinson-Sioux-O'Brien-Clay-Plymouth-Cherokee-
Buena Vista-Woodbury-Ida-Lincoln-Murray-Cottonwood-Nobles-Jackson-
Pipestone-Rock-Dixon-Dakota-Moody-Minnehaha-Turner-Yankton-Union-
358 AM CDT Wed May 8 2019

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

.DAY ONE...Today and tonight.

Widespread rain will persist through this evening, gradually tapering
off in northwest Iowa by evening, and across southeast South Dakota
and southwest Minnesota overnight. Rainfall amounts in excess of an
inch are likely in many locations, which could lead to ponding water
in poor drainage areas, along with minor rises on rivers and streams.

Higher elevations along the Buffalo Ridge in southwest Minnesota
could see light accumulations of wet snow before the precipitation
ends tonight.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday.

Light winds and clearing skies Thursday night could lead to areas of
frost, as temperatures fall into the lower to mid 30s.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

The office that day

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

Issued	Product	Office	Counties	Lasted
May 9, 9:43 AM CDT	River Flood Warning	FSD	Moody	21 days
May 9, 9:43 AM CDT	River Flood Warning	FSD	Turner	4 days
May 9, 9:43 AM CDT	River Flood Warning	FSD	Clay	7 days

Nearby

Frost Advisories in South Dakota, 2019 Frost Advisories in Minnesota, 2019 Frost Advisories in Iowa, 2019 Every frost advisory in 2019

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.