Alert archive / Iowa / River Flood Warnings in 2024

River Flood Warning 26, NWS Sioux Falls, SD

June 16, 2024Dickinson County, Iowa

NWS Sioux Falls, SD issued this river flood warning at Jun 16, 2024, 7:58 PM CDT for Dickinson County, Iowa. It took effect at Jun 17, 2024, 6:28 AM CDT. It was in force for 22 days.

The area

The counties it named.

The facts

Issued
Jun 16, 2024, 7:58 PM CDT (00:58 UTC)
In effect from
Jun 17, 2024, 6:28 AM CDT
Expired
Jul 8, 2024, 9:19 PM CDT
In force
22 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 00:58 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 Jun 16, 6:55 PM CDT, 1 hour 3 minutes earlier.

Area forecast discussion, Jun 16, 6:55 PM CDT, 1 hour 3 minutes before
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Hazardous weather outlook, Jun 16, 3:58 AM CDT, 16 hours before
Hazardous Weather Outlook
National Weather Service Sioux Falls SD
358 AM CDT Sun Jun 16 2024

IAZ020>022-031-032-NEZ013-014-SDZ071-171000-
Plymouth-Cherokee-Buena Vista-Woodbury-Ida-Dixon-Dakota-Union-
358 AM CDT Sun Jun 16 2024

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

.DAY ONE...Today and Tonight

A front focused along Highway 20 may be a focus point for isolated
to scattered thunderstorms late Sunday afternoon and evening. If
storms can develop, they will pose a risk of golf ball size hail
and 60 mph winds.

Additional thunderstorms are expected to develop after dark and
into Monday morning, though some uncertainty remains on the exact
location of development. Any storm overnight will be capable of
producing 2 inch diameter hail and very heavy rainfall.

.DAYS TWO THROUGH SEVEN...Monday through Friday.

Isolated thunderstorms may be possible late Monday afternoon, and
a strong storm could be possible before activity moves northward
overnight.

A very active weather pattern is likely through the next week,
with several chances for thunderstorms capable of marginal severe
weather and locally heavy rainfall. One slightly higher risk for
severe storms may develop Tuesday afternoon and evening.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed this evening through early Monday
morning.

IAZ001>003-012>014-MNZ071-072-080-081-089-090-097-098-SDZ038>040-
050-052>070-171000-
Lyon-Osceola-Dickinson-Sioux-O'Brien-Clay-Lincoln-Murray-
Cottonwood-Nobles-Jackson-Pipestone-Rock-Beadle-Kingsbury-
Brookings-Gregory-Jerauld-Sanborn-Miner-Lake-Moody-Brule-Aurora-
Davison-Hanson-McCook-Minnehaha-Charles Mix-Douglas-Hutchinson-
Turner-Bon Homme-Yankton-
358 AM CDT Sun Jun 16 2024

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

.DAY ONE...Today and Tonight

Thunderstorms are expected late Sunday evening into Monday
morning.   Scattered strong to severe storms are possible, with
the greatest risks of large hail up to and greater than 2 inches
in diameter and 60 mph winds. Additionally, slow moving storms
could produce locally heavy rainfall of 2 to 4 inches which could
lead to flooding or brief flash flooding. There remains some
uncertainty on where storms may develop.

.DAYS TWO THROUGH SEVEN...Monday through Friday.

Thunderstorms are expected to continue through at least early
Monday afternoon. While some storms could still produce hail up to
golf ball size, the greatest risk will come from locally heavy
rain and potential flooding.

Additional thunderstorms may begin to develop late Monday
afternoon and Monday evening, with the greatest focus for storms
west of the James River. Golf ball size hail and 60 mph winds may
be possible in this activity.

A very active weather pattern is likely through the next week,
with several chances for thunderstorms capable of marginal severe
weather and locally heavy rainfall. One slightly higher risk for
severe storms may develop Tuesday afternoon and evening along and
east of Interstate 29.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed late Sunday evening through mid-
morning Monday.

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 16, 10:13 PM CDTSevere Thunderstorm WarningFSDCharles Mix, Gregory47 min
Jun 16, 11:48 PM CDTFlash Flood WarningFSDCharles Mix, Gregory6 hr
Jun 17, 4:54 AM CDTFlash Flood WarningFSDClay, Union6 hr
Jun 16, 7:58 PM CDTRiver Flood WarningFSDClay31 days
Jun 16, 7:58 PM CDTRiver Flood WarningFSDClay32 days
Jun 17, 2:30 AM CDTSevere Thunderstorm Warning Considerable damage threatFSDDickinson, Osceola45 min
Jun 17, 2:58 AM CDTSevere Thunderstorm WarningFSDDickinson, Osceola47 min
Jun 17, 8:28 AM CDTRiver Flood WarningFSDClay15 days
Jun 17, 4:13 PM CDTSevere Thunderstorm WarningFSDClay32 min
Jun 17, 4:41 PM CDTSevere Thunderstorm WarningFSDClay34 min
Jun 17, 5:10 PM CDTSevere Thunderstorm Warning Considerable damage threatFSDClay, Dickinson35 min

Nearby

River Flood Warnings in Iowa, 2024Every 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.