Alert archive / Wisconsin / Flood Watches in 2026
Flood Watch 3, NWS Milwaukee, WI
NWS Milwaukee, WI issued this flood watch at Apr 15, 2026, 11:17 AM CDT for 20 counties in Wisconsin. It took effect at Apr 15, 2026, 4:00 PM CDT. It was in force for 20 hr.
The area
The counties it named.
The facts
- Issued
- Apr 15, 2026, 11:17 AM CDT (16:17 UTC)
- In effect from
- Apr 15, 2026, 4:00 PM CDT
- Expired
- Apr 16, 2026, 11:36 AM CDT
- In force
- 20 hr
- Issued by
- NWS Milwaukee, WI
- Flood severity
- None
Counties Columbia County, WI, Dane County, WI, Dodge County, WI, Fond du Lac County, WI, Green County, WI, Green Lake County, WI, Iowa County, WI, Jefferson County, WI, Kenosha County, WI, Lafayette County, WI, Marquette County, WI, Milwaukee County, WI, Ozaukee County, WI, Racine County, WI, Rock County, WI, Sauk County, WI, Sheboygan County, WI, Walworth County, WI, Washington County, WI, Waukesha County, WI
The radar
The Milwaukee radar (KMKX), 31 km from the middle of the area, began a volume at 16:18 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 nearest sounding before it
Lincoln, IL (KILX), launched 12:00Z, 4.3 hours before the alert went out and 336 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 534 J/kg
- Mixed-layer CIN
- -62 J/kg
- Mixed-layer LCL
- 925 m above ground
- 0-6 km bulk shear
- 43 kt
- 0-1 km storm-relative helicity
- -28 m²/s²
- 0-3 km storm-relative helicity
- 81 m²/s²
- Significant tornado parameter
- -0.1
- Supercell composite
- -0.4
What forecasters said that day
The local office's own words before this flood watch went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Milwaukee, WI wrote its last area forecast discussion before this flood watch went out at Apr 15, 6:57 AM CDT, 4 hours 20 minutes earlier.
Area forecast discussion, Apr 15, 6:57 AM CDT, 4 hours 20 minutes before
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Hazardous Weather Outlook...UPDATED National Weather Service Milwaukee/Sullivan WI 1124 PM CDT Tue Apr 14 2026 WIZ046-047-051-052-056>060-062>072-160430- Marquette-Green Lake-Fond du Lac-Sheboygan-Sauk-Columbia-Dodge- Washington-Ozaukee-Iowa-Dane-Jefferson-Waukesha-Milwaukee- Lafayette-Green-Rock-Walworth-Racine-Kenosha- 1124 PM CDT Tue Apr 14 2026 This Hazardous Weather Outlook is for portions of east central Wisconsin, south central Wisconsin and southeast Wisconsin. .DAY ONE...Tonight Scattered showers and thunderstorms will continue into the overnight hours. Small hail, cloud to ground lightning and locally heavy rainfall are expected. There is a localized flash flood threat where thunderstorms move slow. .DAYS TWO THROUGH SEVEN...Wednesday through Tuesday There is yet another risk of severe thunderstorms from mid afternoon Wednesday into Wednesday evening. Localized damaging winds, hail to the size of one inch and cloud to ground lightning are expected. Additional heavy rain will maintain a flooding risk across the area. Keep up with the latest forecast updates. There is a chance for isolated thunderstorms Thursday. Another round of potentially severe thunderstorms is expected from late Friday afternoon through Friday evening. .SPOTTER INFORMATION STATEMENT... Spotter activation may be needed Wednesday. LMZ643>646-160430- Sheboygan to Port Washington WI- Port Washington to North Point Light WI- North Point Light to Wind Point WI- Wind Point WI to Winthrop Harbor IL- 1124 PM CDT Tue Apr 14 2026 This Hazardous Weather Outlook is for the nearshore waters from Sheboygan Wisconsin to Winthrop Harbor Illinois. .DAY ONE...Tonight Dense fog continues mainly north of Milwaukee through tonight. .DAYS TWO THROUGH SEVEN...Wednesday through Tuesday Chances for thunderstorms continue through the end of the week, with some strong to severe storms possible Wednesday and Friday evening. Fog will continue into Wednesday morning. LMZ080-261-362-364-366-563-565-567-669-671-673-675-777-779-868- 870-872-874-876-878-160430- Lake Michigan Michigan City IN to St. Joseph MI 5 NM offshore to mid-line of lake.- Lake Michigan from Seul Choix Point to Rock Island Passage 5NM offshore to Mid Lake- Lake Michigan South of a line from Seul Choix Point to the Mackinac Bridge and North of a line from Charlevoix MI to South Fox Island 5NM offshore- Lake Michigan from Charlevoix to Point Betsie MI 5NM Offshore to mid lake- Lake Michigan from Point Betsie to Manistee MI 5NM offshore to Mid Lake- Lake Michigan from Rock Island Passage to Sturgeon Bay WI 5NM offshore to mid lake- Lake Michigan from Sturgeon Bay to Two Rivers WI 5NM offshore to Mid Lake- Lake Michigan from Two Rivers to Sheboygan WI 5NM offshore to Mid Lake- Lake Michigan from Sheboygan to Port Washington WI 5NM offshore to Mid Lake- Lake Michigan from Port Washington to North Point Light WI 5NM offshore to Mid Lake- Lake Michigan from North Point Light to Wind Point WI 5NM offshore to Mid Lake- Lake Michigan from Wind Point WI to Winthrop Harbor IL 5NM offshore to Mid Lake- Lake Michigan from Winthrop Harbor to Wilmette Harbor IL 5NM offshore to Mid Lake- Lake Michigan from Wilmette Harbor to Michigan City in 5NM offshore to Mid Lake- Lake Michigan from Pentwater to Manistee MI 5NM offshore to Mid Lake- Lake Michigan from Whitehall to Pentwater MI 5NM offshore to Mid Lake- Lake Michigan from Grand Haven to Whitehall MI 5NM offshore to Mid Lake- Lake Michigan from Holland to Grand Haven MI 5NM offshore to Mid Lake- Lake Michigan from South Haven to Holland MI 5NM offshore to Mid lake- Lake Michigan from St Joseph to South Haven MI 5NM offshore to Mid Lake- 1124 PM CDT Tue Apr 14 2026 This Hazardous Weather Outlook is for the open waters of Lake Michigan. .DAY ONE...Tonight Dense fog continues for the northern two thirds of Lake Michigan the rest of tonight. Scattered thunderstorms will continue over the far southern portion of the lake through the overnight hours. .DAYS TWO THROUGH SEVEN...Wednesday through Tuesday Chances for thunderstorms continue through the end of the week, with some strong to severe storms possible Wednesday and Friday evening. Fog will continue into Wednesday morning. www.weather.gov/mkx
In the hours before
Local storm report, Apr 15, 7:46 AM CDT, 3 hours 31 minutes before
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</html>Local storm report, Apr 15, 7:50 AM CDT, 3 hours 27 minutes before
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</html>Local storm report, Apr 15, 7:52 AM CDT, 3 hours 25 minutes before
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</html>Local storm report, Apr 15, 7:55 AM CDT, 3 hours 22 minutes before
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</html>Local storm report, Apr 15, 8:04 AM CDT, 3 hours 13 minutes before
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</html>The office that day
Everything else NWS Milwaukee, WI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 14, 7:00 PM CDT | Severe Thunderstorm Warning | MKX | Fond du Lac, Green Lake | 30 min |
| Apr 14, 7:05 PM CDT | Tornado Warning | MKX | Iowa, Lafayette | 25 min |
| Apr 14, 7:10 PM CDT | Flash Flood Warning | MKX | Dodge, Milwaukee, Ozaukee, Washington, Waukesha | 3 hr |
| Apr 14, 7:21 PM CDT | Severe Thunderstorm Warning | MKX | Green, Rock | 24 min |
| Apr 14, 7:23 PM CDT | Severe Thunderstorm Warning | MKX | Columbia, Dane | 22 min |
| Apr 14, 7:25 PM CDT | Areal Flood Advisory | MKX | Dane, Iowa | 3 hr |
| Apr 14, 7:26 PM CDT | Areal Flood Advisory | MKX | Fond du Lac, Green Lake | 3 hr |
| Apr 14, 7:28 PM CDT | Severe Thunderstorm Warning | MKX | Dodge, Jefferson | 62 min |
| Apr 14, 7:39 PM CDT | Severe Thunderstorm Warning | MKX | Dane, Green, Rock | 51 min |
| Apr 14, 7:58 PM CDT | Flash Flood Warning | MKX | Milwaukee, Waukesha | 3 hr |
| Apr 14, 7:59 PM CDT | Severe Thunderstorm Warning | MKX | Walworth | 61 min |
| Apr 14, 8:00 PM CDT | Special Marine Warning | MKX | 2 hr | |
| Apr 14, 8:18 PM CDT | Tornado Warning | MKX | Jefferson, Waukesha | 21 min |
| Apr 14, 8:24 PM CDT | Tornado Warning | MKX | Walworth | 23 min |
| Apr 14, 8:30 PM CDT | Severe Thunderstorm Warning | MKX | Kenosha, Racine | 49 min |
| Apr 14, 8:35 PM CDT | Tornado Warning | MKX | Racine | 33 min |
| Apr 14, 8:57 PM CDT | Tornado Warning | MKX | Kenosha | 17 min |
| Apr 14, 9:12 PM CDT | Special Weather Statement | MKX | Sauk | 33 min |
| Apr 14, 10:02 PM CDT | Areal Flood Advisory | MKX | Dane, Dodge, Jefferson, Ozaukee, Washington, Waukesha | 3 hr |
| Apr 14, 10:13 PM CDT | River Flood Warning | MKX | Dodge | 21 days |
| Apr 14, 10:14 PM CDT | Special Weather Statement | MKX | Marquette | 16 min |
| Apr 14, 10:33 PM CDT | Areal Flood Advisory | MKX | Green, Lafayette | 3 hr |
| Apr 14, 10:57 PM CDT | Areal Flood Advisory | MKX | Kenosha, Milwaukee, Racine, Waukesha | 3 hr |
| Apr 14, 10:59 PM CDT | Areal Flood Advisory | MKX | Green, Rock, Walworth | 3 hr |
| Apr 14, 11:02 PM CDT | Special Weather Statement | MKX | Sauk | 43 min |
| Apr 14, 11:21 PM CDT | Areal Flood Advisory | MKX | Green, Rock | 3 hr |
| Apr 14, 11:25 PM CDT | Severe Thunderstorm Warning | MKX | Columbia, Green Lake, Marquette, Sauk | 33 min |
| Apr 15, 3:00 AM CDT | Severe Thunderstorm Warning | MKX | Walworth | 30 min |
| Apr 15, 3:23 AM CDT | Dense Fog Advisory | MKX | Columbia, Fond du Lac, Green Lake, Marquette, Sauk | 7 hr |
| Apr 15, 3:25 AM CDT | Special Weather Statement | MKX | Kenosha | 50 min |
| Apr 15, 4:22 AM CDT | River Flood Watch | MKX | Jefferson | 21 days |
| Apr 15, 4:22 AM CDT | River Flood Watch | MKX | Jefferson | 40 hr |
| Apr 15, 4:23 AM CDT | River Flood Watch | MKX | Rock | 21 days |
| Apr 15, 4:24 AM CDT | River Flood Watch | MKX | Green Lake | 40 hr |
| Apr 15, 10:50 AM CDT | River Flood Warning | MKX | Kenosha | 15 days |
| Apr 15, 11:19 AM CDT | River Flood Watch | MKX | Waukesha | 3 days |
| Apr 15, 11:22 AM CDT | River Flood Warning | MKX | Ozaukee | 5 days |
| Apr 15, 11:51 AM CDT | River Flood Warning | MKX | Jefferson | 21 days |
| Apr 15, 4:49 PM CDT | Special Weather Statement | MKX | Iowa, Sauk | 56 min |
| Apr 15, 5:29 PM CDT | Severe Thunderstorm Warning | MKX | Iowa | 46 min |
| Apr 15, 5:56 PM CDT | River Flood Watch | MKX | Jefferson | 21 days |
| Apr 15, 6:07 PM CDT | Special Weather Statement | MKX | Iowa | 38 min |
| Apr 15, 6:23 PM CDT | Severe Thunderstorm Warning | MKX | Green, Lafayette | 52 min |
| Apr 15, 6:29 PM CDT | Tornado Warning | MKX | Green, Lafayette | 46 min |
| Apr 15, 6:44 PM CDT | Special Weather Statement | MKX | Dane | 31 min |
Nearby
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.