Alert archive / South Dakota / River Flood Watches in 2010

River Flood Watch 2, NWS Sioux Falls, SD

April 6, 2010Union County, South Dakota; Plymouth County, Iowa

NWS Sioux Falls, SD issued this river flood watch at Apr 6, 2010, 10:01 AM CDT for Union County, South Dakota; Plymouth County, Iowa. It took effect at Apr 9, 2010, 1:00 PM CDT. It was in force for .

The area

The counties it named.

The facts

Issued
Apr 6, 2010, 10:01 AM CDT (15:01 UTC)
In effect from
Apr 9, 2010, 1:00 PM CDT
Expired
Apr 7, 2010, 8:50 AM CDT
In force
Issued by
NWS Sioux Falls, SD
Flood severity
None

Counties Plymouth County, IA, Union County, SD

The radar

The Sioux Falls radar (KFSD), 92 km from the middle of the area, began a volume at 15:02 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 at Akron (AKRI4).

Action stage
14 ft
Minor stage
16 ft
Moderate stage
18 ft
Major stage
20 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 06485500, 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 Sioux Falls, SD issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 6, 10:01 AM CDTRiver Flood WatchFSDLincoln, Union23 hr
Apr 6, 10:01 AM CDTRiver Flood WatchFSDClay, Dickinson23 hr
Apr 6, 10:01 AM CDTRiver Flood WatchFSDBuena Vista23 hr

Nearby

River Flood Watches in South Dakota, 2010River Flood Watches in Iowa, 2010Every river flood watch in 2010

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.