River Flood Warning 17, NWS Sioux Falls, SD

Issued

Aug 23, 2025, 9:47 AM CDT (14:47 UTC)

In effect from

Aug 24, 2025, 5:30 AM CDT

Expired

Aug 29, 2025, 4:35 AM CDT

In force

5 days

Issued by

NWS Sioux Falls, SD

Area

Storm-based polygon

Flood severity

Minor

County Sanborn County, SD

The Sioux Falls radar (KFSD), 120 km from the middle of the area, began a volume at 14:52 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.

Written for the forecast point James River near Forestburg (FORS2). The gauge peaked at 12.28 ft at Aug 26, 2025, 10:00 AM CDT.

Action stage

10 ft

Minor stage

12 ft

Moderate stage

14.5 ft

Major stage

18 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 06477000, one reading an hour, from a day before the product to a day after it ended. Flood stages are today's.

NWS Sioux Falls, SD wrote its last area forecast discussion before this river flood warning went out at Aug 22, 6:38 PM CDT, 15 hours 9 minutes earlier.

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River Flood Warnings in South Dakota, 2025Every river flood warning in 2025

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.