Alert archive / Wisconsin / River Flood Warnings in 2026
River Flood Warning 36, NWS Green Bay, WI
NWS Green Bay, WI issued this river flood warning at Apr 15, 2026, 7:29 AM CDT for Manitowoc County, Wisconsin. It was in force for 29 hr.
The area
The counties it named.
The facts
- Issued
- Apr 15, 2026, 7:29 AM CDT (12:29 UTC)
- Expired
- Apr 16, 2026, 12:01 PM CDT
- In force
- 29 hr
- Issued by
- NWS Green Bay, WI
- Area
- Storm-based polygon
- Flood severity
- Minor
County Manitowoc County, WI
The radar
The Green Bay radar (KGRB), 56 km from the middle of the area, began a volume at 12:30 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 Manitowoc River at Manitowoc (MTWW3). The gauge peaked at 10.65 ft at Apr 14, 2026, 9:00 AM CDT.
- Action stage
- 8 ft
- Minor stage
- 10 ft
- Moderate stage
- 11.5 ft
- Major stage
- 13 ft
This gauge today: stage, forecast and historic crests
Stage from the USGS instantaneous record for site 04085427, 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 Green Bay, WI wrote its last area forecast discussion before this river flood warning went out at Apr 15, 6:34 AM CDT, 55 minutes earlier.
Area forecast discussion, Apr 15, 6:34 AM CDT, 55 minutes before
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</html>Hazardous weather outlook, Apr 15, 3:39 AM CDT, 3 hours 50 minutes before
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</html>In the hours before
Local storm report, Apr 15, 7:10 AM CDT, 19 minutes before
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<title>Service Notice</title>
<link rel="stylesheet" href="index.css">
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<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.
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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 Green Bay, WI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 14, 7:00 PM CDT | Special Weather Statement | GRB | Marathon | 45 min |
| Apr 14, 7:03 PM CDT | Special Weather Statement | GRB | Winnebago | 27 min |
| Apr 14, 7:19 PM CDT | Special Weather Statement | GRB | Winnebago | 41 min |
| Apr 14, 7:39 PM CDT | Areal Flood Advisory | GRB | Calumet, Winnebago | 92 min |
| Apr 14, 9:03 PM CDT | Areal Flood Warning | GRB | Portage, Wood | 7 hr |
| Apr 14, 9:11 PM CDT | Flash Flood Warning | GRB | Brown | 3 hr |
| Apr 14, 9:42 PM CDT | River Flood Warning | GRB | Marinette | 8 days |
| Apr 14, 9:48 PM CDT | River Flood Warning | GRB | Marinette | 48 hr |
| Apr 14, 9:59 PM CDT | Special Weather Statement | GRB | Waushara | 46 min |
| Apr 14, 10:56 PM CDT | Special Weather Statement | GRB | Waupaca | 34 min |
| Apr 15, 2:34 AM CDT | Areal Flood Warning | GRB | Brown, Door, Kewaunee, Manitowoc, Oconto, Outagamie and 4 more | 11 hr |
| Apr 15, 2:58 AM CDT | Dense Fog Advisory | GRB | Brown, Calumet, Door, Florence, Forest, Kewaunee and 13 more | 7 hr |
| Apr 15, 8:07 AM CDT | River Flood Warning | GRB | Marinette | 21 days |
| Apr 15, 12:09 PM CDT | River Flood Warning | GRB | Marinette | 21 days |
| Apr 15, 1:21 PM CDT | Areal Flood Warning | GRB | Menominee | 21 hr |
| Apr 15, 2:19 PM CDT | Dense Fog Advisory | GRB | Brown, Calumet, Door, Florence, Forest, Kewaunee and 16 more | 20 hr |
| Apr 15, 2:30 PM CDT | Flood Watch | GRB | Brown, Calumet, Kewaunee, Manitowoc, Oconto, Outagamie and 4 more | 8 hr |
Nearby
River Flood Warnings in Wisconsin, 2026Every river flood warning in 2026
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.