Alert archive / South Dakota / River Flood Warnings in 2024

River Flood Warning 34, NWS Sioux Falls, SD

June 20, 2024Clay County, South Dakota

NWS Sioux Falls, SD issued this river flood warning at Jun 20, 2024, 9:59 AM CDT for Clay County, South Dakota. It took effect at Jun 21, 2024, 8:38 AM CDT. It was in force for 10 days.

The area

The counties it named.

The facts

Issued: Jun 20, 2024, 9:59 AM CDT (14:59 UTC)
In effect from: Jun 21, 2024, 8:38 AM CDT
Expired: Jul 1, 2024, 10:42 AM CDT
In force: 10 days
Issued by: NWS Sioux Falls, SD
Area: Storm-based polygon
Flood severity: Major

County Clay County, SD

The radar

The Sioux Falls radar (KFSD), 77 km from the middle of the area, began a volume at 15:01 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 Vermillion River near Wakonda (WKAS2).

Action stage: 13 ft
Minor stage: 14 ft
Moderate stage: 15.5 ft
Major stage: 17 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 06479000, 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 20, 6:19 AM CDT, 3 hours 40 minutes earlier.

Area forecast discussion, Jun 20, 6:19 AM CDT, 3 hours 40 minutes before

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Hazardous weather outlook, Jun 20, 5:44 AM CDT, 4 hours 15 minutes before

Hazardous Weather Outlook
National Weather Service Sioux Falls SD
544 AM CDT Thu Jun 20 2024

SDZ050-057-063-211130-
Gregory-Brule-Charles Mix-
544 AM CDT Thu Jun 20 2024

This Hazardous Weather Outlook is for south central South Dakota.

.DAY ONE...Today and tonight.

Showers and isolated storms will continue to spread in this morning. Severe
weather is not expected but locally heavy downpours may occur.

Another round of showers and storms is expected to spread in from
central South Dakota tonight. Isolated strong to severe storms are
possible tonight with the greatest risk from 8 PM through midnight.
Large hail to half dollar size and damaging wind gusts to 65 mph are
the main threats possible with the strongest storms, along with a
low risk for tornadoes. Heavy downpours may lead to flash flooding
overnight.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

Another round of showers and storms is likely Friday night with
scattered strong to severe storms possible. All hazards are possible
with storms Friday night, including flash flooding.

By Saturday, a widespread 2 to 4 inches of rain is expected with
isolated amounts of 6 or more inches. Multiple periods of locally
heavy rainfall means ponding of water and rises in area streams and
creeks are expected.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed Friday night.

IAZ001-MNZ071-072-080-081-089-090-097-098-SDZ038>040-052>056-058>062-
064>070-211130-
Lyon-Lincoln-Murray-Cottonwood-Nobles-Jackson-Pipestone-Rock-Beadle-
Kingsbury-Brookings-Jerauld-Sanborn-Miner-Lake-Moody-Aurora-Davison-
Hanson-McCook-Minnehaha-Douglas-Hutchinson-Turner-Bon Homme-Yankton-
Clay-
544 AM CDT Thu Jun 20 2024

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

.DAY ONE...Today and tonight.

Showers and isolated storms will continue to spread in this morning
and afternoon. Severe weather is not expected but locally heavy
downpours may occur.

Another round of showers and storms is expected to spread in from
central South Dakota tonight. While severe storms are not expected at
this time, heavy downpours may lead to flash flooding overnight.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

Another round of showers and storms is likely Friday night with
scattered strong to severe storms possible. All hazards are possible
with storms Friday night, including flash flooding.

By Saturday, a widespread 2 to 4 inches of rain is expected with
isolated amounts of 6 or more inches. Multiple periods of locally
heavy rainfall means ponding of water and rises in area streams and
creeks are expected.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed Friday night.

IAZ002-003-012>014-020>022-031-032-NEZ013-014-SDZ071-211130-
Osceola-Dickinson-Sioux-O'Brien-Clay-Plymouth-Cherokee-Buena Vista-
Woodbury-Ida-Dixon-Dakota-Union-
544 AM CDT Thu Jun 20 2024

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

.DAY ONE...Today and tonight.

Aside from a few stray showers today, no hazardous weather is
expected during the day. Another round of showers and storms may
spread in from central South Dakota and Nebraska tonight, but severe
weather is not expected at this time.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

Another round of showers and storms may track through the region
Friday night with isolated strong to severe storms possible. All
hazards are possible with storms Friday night, including flash
flooding.

By Saturday, a widespread 1 to 3 inches of rain is expected with
isolated amounts of 4 or more inches. Multiple periods of locally
heavy rainfall means ponding of water and rises in area streams and
creeks are expected.

.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
Jun 20, 3:26 AM CDT	Flood Watch	FSD	Aurora, Beadle, Bon Homme, Brookings, Brule, Charles Mix and 18 more	64 hr
Jun 20, 7:50 AM CDT	River Flood Warning	FSD	Lincoln, Turner	10 days
Jun 20, 3:44 PM CDT	Flash Flood Warning	FSD	Hutchinson, Lincoln, Turner	3 hr
Jun 20, 4:43 PM CDT	River Flood Warning	FSD	Lincoln	21 days
Jun 20, 5:05 PM CDT	Flash Flood Warning	FSD	Lyon, Osceola	3 hr
Jun 20, 6:14 PM CDT	River Flood Warning	FSD	Lyon	7 days
Jun 20, 1:40 PM CDT	River Flood Warning	FSD	Cottonwood, Murray	18 days

Nearby

River Flood Warnings in South Dakota, 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.