Alert archive / Iowa / River Flood Warnings in 2025
River Flood Warning 10, NWS Sioux Falls, SD
NWS Sioux Falls, SD issued this river flood warning at Jul 31, 2025, 1:11 PM CDT for Plymouth County, Iowa. It took effect at Jul 31, 2025, 2:10 PM CDT. It was in force for 35 hr.
The area
The counties it named.
The facts
- Issued
- Jul 31, 2025, 1:11 PM CDT (18:11 UTC)
- In effect from
- Jul 31, 2025, 2:10 PM CDT
- Expired
- Aug 2, 2025, 1:00 AM CDT
- In force
- 35 hr
- Issued by
- NWS Sioux Falls, SD
- Area
- Storm-based polygon
- Flood severity
- Minor
County Plymouth County, IA
The radar
The Sioux Falls radar (KFSD), 103 km from the middle of the area, began a volume at 18:11 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 Floyd River at Le Mars (LMRI4).
- Action stage
- 18 ft
- Minor stage
- 20 ft
- Moderate stage
- 21 ft
- Major stage
- 26 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 Jul 31, 12:43 PM CDT, 28 minutes earlier.
Area forecast discussion, Jul 31, 12:43 PM CDT, 28 minutes before
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<title>Service Notice</title>
<link rel="stylesheet" href="index.css">
</head>
<body>
<main class="wrap">
<section class="card" role="status" aria-live="polite">
<div class="status" id="status">Temporary Notice</div>
<h1 id="headline">This service is currently unavailable.</h1>
<p id="message1">
The site you requested is temporarily down for maintenance or an unexpected outage.
</p>
<p id="message2">
Please try again in a few minutes.
</p>
<p class="small" id="detail">
If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
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</html>The office that day
Everything else NWS Sioux Falls, SD issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 30, 7:55 PM CDT | River Flood Warning | FSD | Plymouth, Sioux | 30 hr |
Nearby
River Flood Warnings in Iowa, 2025Every river flood warning in 2025
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.