Alert archive / Iowa / River Flood Warnings in 2024

River Flood Warning 6, NWS Sioux Falls, SD

May 2, 2024O'Brien County, Iowa

NWS Sioux Falls, SD issued this river flood warning at May 2, 2024, 2:06 PM CDT for O'Brien County, Iowa. It was in force for 24 hr.

The area

The counties it named.

The facts

Issued: May 2, 2024, 2:06 PM CDT (19:06 UTC)
Expired: May 3, 2024, 2:35 PM CDT
In force: 24 hr
Issued by: NWS Sioux Falls, SD
Area: Storm-based polygon
Flood severity: Minor

County O'Brien County, IA

The radar

The Sioux Falls radar (KFSD), 105 km from the middle of the area, began a volume at 19:07 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 Waterman Creek near Sutherland (SWCI4).

Action stage: 1235 ft
Minor stage: 1236 ft
Moderate stage: 1239 ft
Major stage: 1242 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 May 2, 12:24 PM CDT, 1 hour 42 minutes earlier.

Area forecast discussion, May 2, 12:24 PM CDT, 1 hour 42 minutes before

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Hazardous weather outlook, May 2, 4:51 AM CDT, 9 hours 15 minutes before

Hazardous Weather Outlook
National Weather Service Sioux Falls SD
451 AM CDT Thu May 2 2024

IAZ001>003-012>014-020>022-031-032-MNZ071-072-080-081-089-090-097-
098-NEZ013-014-SDZ038>040-050-052>071-031000-
Lyon-Osceola-Dickinson-Sioux-O'Brien-Clay-Plymouth-Cherokee-
Buena Vista-Woodbury-Ida-Lincoln-Murray-Cottonwood-Nobles-Jackson-
Pipestone-Rock-Dixon-Dakota-Beadle-Kingsbury-Brookings-Gregory-
Jerauld-Sanborn-Miner-Lake-Moody-Brule-Aurora-Davison-Hanson-
McCook-Minnehaha-Charles Mix-Douglas-Hutchinson-Turner-Bon Homme-
Yankton-Union-
451 AM CDT Thu May 2 2024

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

.DAY ONE...Today and Tonight

Early morning showers and thunderstorms exit the region
throughout the morning hours. With up to 1-1.5" of rainfall fallen
across portions of northwestern Iowa overnight, there may be
ponding of water on roadways and low-lying area, with some rises
on the local rivers/streams.

Additional pop-up showers are possible throughout the day, though
only light accumulations are expected.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday

Additional chances for scattered showers and thunderstorms return
Friday night into Saturday, and again Monday night into Tuesday.

.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.

Issued	Product	Office	Counties	Lasted
May 2, 8:50 AM CDT	River Flood Warning	FSD	Clay	3 days
May 2, 8:50 AM CDT	River Flood Warning	FSD	Cherokee	13 days
May 2, 9:33 AM CDT	River Flood Warning	FSD	Clay	21 days

Nearby

River Flood Warnings in Iowa, 2024 Every river flood warning in 2024

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.