Alert archive / South Dakota / River Flood Warnings in 2019

River Flood Warning 159, NWS Sioux Falls, SD

April 27, 2019Minnehaha County, South Dakota

NWS Sioux Falls, SD issued this river flood warning at Apr 27, 2019, 9:54 AM CDT for Minnehaha County, South Dakota. It took effect at Apr 28, 2019, 7:00 PM CDT. It was in force for 56 hr.

The area

The counties it named.

The facts

Issued: Apr 27, 2019, 9:54 AM CDT (14:54 UTC)
In effect from: Apr 28, 2019, 7:00 PM CDT
Expired: May 1, 2019, 3:00 AM CDT
In force: 56 hr
Issued by: NWS Sioux Falls, SD
Area: Storm-based polygon
Flood severity: Minor

County Minnehaha County, SD

The radar

The Sioux Falls radar (KFSD), 11 km from the middle of the area, began a volume at 14:57 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 Split Rock Creek at Corson (COSS2).

Action stage: 7.5 ft
Minor stage: 8.5 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 06482610, 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 26, 6:26 PM CDT, 15 hours 28 minutes earlier.

Area forecast discussion, Apr 26, 6:26 PM CDT, 15 hours 28 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 27, 4:48 PM CDT	River Flood Warning	FSD	Minnehaha	5 days
Apr 27, 9:54 AM CDT	River Flood Warning	FSD	Cherokee	21 hr
Apr 27, 9:54 AM CDT	River Flood Warning	FSD	Clay	3 days

Nearby

River Flood Warnings in South Dakota, 2019 Every 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.