Alert archive / Iowa / River Flood Warnings in 2023

River Flood Warning 37, NWS Sioux Falls, SD

May 13, 2023Dickinson County, Iowa

NWS Sioux Falls, SD issued this river flood warning at May 13, 2023, 11:02 AM CDT for Dickinson County, Iowa. It took effect at May 14, 2023, 6:45 AM CDT. It was in force for 6 days.

The area

The counties it named.

The facts

Issued: May 13, 2023, 11:02 AM CDT (16:02 UTC)
In effect from: May 14, 2023, 6:45 AM CDT
Expired: May 20, 2023, 7:29 AM CDT
In force: 6 days
Issued by: NWS Sioux Falls, SD
Area: Storm-based polygon
Flood severity: Minor

County Dickinson County, IA

The radar

The Sioux Falls radar (KFSD), 129 km from the middle of the area, began a volume at 16:05 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 Little Sioux River near Milford (MIFI4).

Action stage: 11 ft
Minor stage: 13 ft
Moderate stage: 16 ft
Major stage: 20 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 13, 6:45 AM CDT, 4 hours 17 minutes earlier.

Area forecast discussion, May 13, 6:45 AM CDT, 4 hours 17 minutes before

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Hazardous weather outlook, May 13, 4:35 AM CDT, 6 hours 27 minutes before

Hazardous Weather Outlook
National Weather Service Sioux Falls SD
435 AM CDT Sat May 13 2023

MNZ071-072-080-081-090-140945-
Lincoln-Lyon-Murray-Cottonwood-Jackson-
435 AM CDT Sat May 13 2023

This Hazardous Weather Outlook is for southwest Minnesota.

.DAY ONE...Today and tonight.

Periods of showers and thunderstorms continue today into tonight.
Pockets of heavy rain are possible, which could lead to localized
flooding in urban or poor drainage areas, as well as areas which have
received heavier rainfall in recent days.

While heavy rain is the primary concern through tonight, isolated
strong to severe thunderstorms could develop. If stronger storms
occur, large hail to half dollar size, and perhaps a tornado or
localized damaging wind to 60 mph will be possible.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed.

IAZ001>003-012>014-020>022-031-032-MNZ089-097-098-NEZ013-014-SDZ039-
040-054>056-060>062-065>071-140945-
Lyon-Osceola-Dickinson-Sioux-O'Brien-Clay-Plymouth-Cherokee-
Buena Vista-Woodbury-Ida-Nobles-Pipestone-Rock-Dixon-Dakota-
Kingsbury-Brookings-Miner-Lake-Moody-Hanson-McCook-Minnehaha-
Hutchinson-Turner-Lincoln-Bon Homme-Yankton-Union-
435 AM CDT Sat May 13 2023

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

.DAY ONE...Today and tonight.

Periods of showers and thunderstorms continue today into tonight.
Isolated strong to severe thunderstorms are possible through the
daytime hours. Primary threats would be large hail to half dollar
size, along with a few tornadoes and localized damaging wind to 60
mph.

Pockets of heavy rain could also lead to localized flooding in urban
or poor drainage areas, as well as areas which have received heavier
rainfall in recent days.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed.

SDZ038-050-052-053-057>059-063-064-140945-
Beadle-Gregory-Jerauld-Sanborn-Brule-Aurora-Davison-Charles Mix-
Douglas-
435 AM CDT Sat May 13 2023

This Hazardous Weather Outlook is for central South Dakota, east
central South Dakota, south central South Dakota and southeast
South Dakota.

.DAY ONE...Today and tonight.

Showers and a few thunderstorms move through the region today. The
probability for severe weather is low.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

In the hours before

Local storm report, May 13, 8:55 AM CDT, 2 hours 7 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
855 AM CDT SAT MAY 13 2023

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0834 PM     TSTM WND DMG     CHATSWORTH              42.91N 96.52W
05/12/2023                   SIOUX              IA   TRAINED SPOTTER

            NUMEROUS 1 TO 2 INCH TREE BRANCHES DOWN,
            WITH ONE UP TO 4 INCHES IN DIAMETER. WINDS
            ESTIMATED AROUND 60 MPH.

&&

JC

The office that day

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

Issued	Product	Office	Counties	Lasted
May 12, 7:09 PM CDT	Severe Thunderstorm Warning Considerable damage threat	FSD	Clay, Union	51 min
May 12, 7:10 PM CDT	Severe Thunderstorm Warning Considerable damage threat	FSD	Bon Homme, Yankton	35 min
May 12, 7:27 PM CDT	Severe Thunderstorm Warning	FSD	Union	33 min
May 12, 7:46 PM CDT	Severe Thunderstorm Warning	FSD	Union	44 min
May 12, 8:17 PM CDT	Severe Thunderstorm Warning	FSD	Lincoln, Union	28 min
May 12, 7:50 PM CDT	Severe Thunderstorm Warning	FSD	Woodbury	40 min
May 12, 7:55 PM CDT	Tornado Warning	FSD	Woodbury	35 min
May 12, 8:16 PM CDT	Tornado Warning	FSD	Plymouth, Woodbury	29 min
May 12, 8:27 PM CDT	Severe Thunderstorm Warning	FSD	Plymouth, Woodbury	48 min
May 13, 1:48 PM CDT	Tornado Warning	FSD	Buena Vista	27 min
May 13, 4:25 PM CDT	Tornado Warning Tornado observed	FSD	Buena Vista	35 min
May 13, 4:36 PM CDT	Tornado Warning	FSD	Buena Vista	24 min

Nearby

River Flood Warnings in Iowa, 2023 Every river flood warning in 2023

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.