Alert archive / South Dakota / River Flood Warnings in 2023

River Flood Warning 9, NWS Aberdeen, SD

April 11, 2023Codington County, South Dakota

NWS Aberdeen, SD issued this river flood warning at Apr 11, 2023, 10:44 PM CDT for Codington County, South Dakota. It was in force for 21 days.

The area

The counties it named.

The facts

Issued
Apr 11, 2023, 10:44 PM CDT (03:44 UTC)
Expired
May 2, 2023, 10:44 PM CDT
In force
21 days
Issued by
NWS Aberdeen, SD
Area
Storm-based polygon
Flood severity
Minor

County Codington County, SD

The radar

The Aberdeen radar (KABR), 110 km from the middle of the area, began a volume at 03:44 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.

The river

Written for the forecast point Willow Creek near Watertown (WWCS2). The gauge peaked at 13.68 ft at Apr 12, 2023, 12:00 AM CDT.

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Action stage
9 ft
Minor stage
10 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 06479515, one reading an hour, from a day before the product to a day after it ended. Flood stages are today's.

What forecasters said that day

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

NWS Aberdeen, SD wrote its last area forecast discussion before this river flood warning went out at Apr 11, 9:37 PM CDT, 1 hour 7 minutes earlier.

Area forecast discussion, Apr 11, 9:37 PM CDT, 1 hour 7 minutes before
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Hazardous weather outlook, Apr 11, 1:46 PM CDT, 8 hours 58 minutes before
Hazardous Weather Outlook...UPDATED
National Weather Service Aberdeen SD
146 PM CDT Tue Apr 11 2023

MNZ039-046-SDZ003>007-009>011-015>020-022-033>037-121200-
Traverse-Big Stone-Corson-Campbell-McPherson-Brown-Marshall-Walworth-
Edmunds-Day-Dewey-Potter-Faulk-Spink-Clark-Codington-Hamlin-Stanley-
Sully-Hughes-Hyde-Hand-
146 PM CDT Tue Apr 11 2023 /1246 PM MDT Tue Apr 11 2023/

This Hazardous Weather Outlook is for west central Minnesota,
central South Dakota, north central South Dakota and northeast
South Dakota.

.DAY ONE...This afternoon and tonight.

No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

Increase snowmelt will lead to rising river levels along the Big
Sioux and James Rivers through the end of the week.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

SDZ045-048-051-121200-
Jones-Lyman-Buffalo-
146 PM CDT Tue Apr 11 2023

This Hazardous Weather Outlook is for central South Dakota.

.DAY ONE...This afternoon and tonight.

Very high grassland fire danger is expected through early evening as
relative humidity values remain in the 10 to 20 percent range and
winds gust as high as 35 mph.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

SDZ008-021-023-121200-
Roberts-Grant-Deuel-
146 PM CDT Tue Apr 11 2023

This Hazardous Weather Outlook is for northeast South Dakota.

.DAY ONE...This afternoon and tonight.

Southwesterly downslope winds up to 50 mph are expected on the
eastern side of the Prairie Coteau tonight.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

SRF

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 11, 9:26 PM CDTRiver Flood WarningABRGrant21 days
Apr 11, 10:56 PM CDTRiver Flood WarningABRGrant5 days
Apr 11, 11:44 PM CDTRiver Flood WarningABRCodington4 days
Apr 12, 2:24 AM CDTRiver Flood WarningABRGrant48 hr
Apr 12, 2:32 AM CDTRiver Flood WarningABRGrant21 days
Apr 12, 4:20 AM CDTRiver Flood WarningABRCodington49 hr
Apr 12, 4:26 AM CDTRiver Flood WarningABRCodington12 days
Apr 12, 4:42 AM CDTRiver Flood WarningABRCodington16 days
Apr 12, 6:13 AM CDTRiver Flood WarningABRCodington21 days
Apr 12, 6:27 PM CDTRiver Flood WarningABRRoberts6 days
Apr 12, 2:26 AM CDTRiver Flood WarningABRBig Stone13 days

Nearby

River Flood Warnings in South Dakota, 2023Every river flood warning in 2023

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; the gauge from the NWS water service and the USGS.