Alert archive / South Dakota / River Flood Warnings in 2019

River Flood Warning 75, NWS Aberdeen, SD

August 18, 2019Hamlin County, South Dakota

NWS Aberdeen, SD issued this river flood warning at Aug 18, 2019, 9:09 PM CDT for Hamlin County, South Dakota. It was in force for 34 hr.

The area

The counties it named.

The facts

Issued
Aug 18, 2019, 9:09 PM CDT (02:09 UTC)
Expired
Aug 20, 2019, 7:13 AM CDT
In force
34 hr
Issued by
NWS Aberdeen, SD
Area
Storm-based polygon
Flood severity
Minor

County Hamlin County, SD

The radar

The Sioux Falls radar (KFSD), 126 km from the middle of the area, began a volume at 02:11 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 Castlewood (CSWS2). The gauge peaked at 10.11 ft at Aug 19, 2019, 5:00 AM CDT.

actionminormoderate8101208/1908/2008/21
Action stage
8 ft
Minor stage
9 ft
Moderate stage
11 ft
Major stage
16 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 06479525, one reading an hour, from a day before the product to a day after it ended. Flood stages are today's.

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 18, 7:17 PM CDTAreal Flood WarningABRHamlin48 hr

Nearby

River Flood Warnings in South Dakota, 2019Every river flood warning 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; the gauge from the NWS water service and the USGS.