Alert archive / South Dakota / River Flood Warnings in 2023

River Flood Warning 25, NWS Sioux Falls, SD

April 11, 2023Brookings County, Hamlin County, South Dakota

NWS Sioux Falls, SD issued this river flood warning at Apr 11, 2023, 3:15 AM CDT for Brookings County, Hamlin County, South Dakota. It was in force for 14 days.

The area

The counties it named.

The facts

Issued
Apr 11, 2023, 3:15 AM CDT (08:15 UTC)
Expired
Apr 25, 2023, 2:51 PM CDT
In force
14 days
Issued by
NWS Sioux Falls, SD
Area
Storm-based polygon
Flood severity
Minor

Counties Brookings County, SD, Hamlin County, SD

The radar

The Sioux Falls radar (KFSD), 106 km from the middle of the area, began a volume at 08:17 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 Big Sioux River near Estelline (BSES2).

Action stage
1642.5 ft
Minor stage
1644 ft
Moderate stage
1645.5 ft
Major stage
1648 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record, 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 Sioux Falls, SD wrote its last area forecast discussion before this river flood warning went out at Apr 11, 2:40 AM CDT, 35 minutes earlier.

Area forecast discussion, Apr 11, 2:40 AM CDT, 35 minutes before
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Hazardous weather outlook, Apr 10, 5:23 PM CDT, 9 hours 52 minutes before
Hazardous Weather Outlook
National Weather Service Sioux Falls SD
523 PM CDT Mon Apr 10 2023

IAZ001>003-012>014-020>022-031-032-NEZ013-014-SDZ050-052>054-057>071-
112230-
Lyon-Osceola-Dickinson-Sioux-O'Brien-Clay-Plymouth-Cherokee-
Buena Vista-Woodbury-Ida-Dixon-Dakota-Gregory-Jerauld-Sanborn-Miner-
Brule-Aurora-Davison-Hanson-McCook-Minnehaha-Charles Mix-Douglas-
Hutchinson-Turner-Lincoln-Bon Homme-Yankton-Union-
523 PM CDT Mon Apr 10 2023

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

.DAY ONE...Tonight.

Minor to localized moderate river flooding continues, mainly along
the Big Sioux and Rock Rivers, as well as their tributary creeks.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

Gusty south to southwest winds, combined with well above normal
temperatures and low humidity levels, return Tuesday through
Thursday. These conditions result in very high to extreme fire
danger across snow-free areas.

Minor to localized moderate river flooding will continue through mid
to late week, especially along the Big Sioux and Rock Rivers, and
their tributary creeks.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

MNZ071-072-080-081-089-090-097-098-SDZ038>040-055-056-112230-
Lincoln-Lyon-Murray-Cottonwood-Nobles-Jackson-Pipestone-Rock-Beadle-
Kingsbury-Brookings-Lake-Moody-
523 PM CDT Mon Apr 10 2023

This Hazardous Weather Outlook is for southwest Minnesota and east
central South Dakota.

.DAY ONE...Tonight.

Minor to localized moderate river flooding continues, mainly along
the Big Sioux and Rock Rivers, as well as their tributary creeks.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

Gusty south to southwest winds, combined with warming afternoon
temperatures and lowering humidity levels, return Tuesday through
Thursday. These conditions may result in high to very high fire
danger across snow-free areas on those days.

Minor to localized moderate river flooding will continue through mid
to late week, especially along the Big Sioux and Rock Rivers, and
their tributary creeks.

.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.

IssuedProductOfficeCountiesLasted
Apr 11, 12:57 AM CDTRiver Flood WarningFSDMinnehaha12 days
Apr 11, 1:00 AM CDTRiver Flood WarningFSDBrookings21 days
Apr 11, 3:15 AM CDTRiver Flood WarningFSDLincoln, Minnehaha8 days
Apr 11, 4:19 PM CDTFire Weather WatchFSDBon Homme, Hutchinson, Lincoln, Turner, Yankton11 hr
Apr 11, 4:19 PM CDTRed Flag WarningFSDClay, Lincoln, Union, Yankton28 hr

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.