Severe Thunderstorm Warning 64, NWS Milwaukee, WI

156 
WWUS53 KMKX 152247
SVSMKX

Severe Weather Statement
National Weather Service Milwaukee/Sullivan WI
547 PM CDT Wed Apr 15 2026

WIC049-152315-
/O.CON.KMKX.SV.W.0064.000000T0000Z-260415T2315Z/
Iowa WI-
547 PM CDT Wed Apr 15 2026

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 615 PM CDT
FOR WESTERN IOWA COUNTY...

At 547 PM CDT, a severe thunderstorm was located 10 miles northwest
of Mineral Point, moving east at 40 mph.

HAZARD...60 mph wind gusts and quarter size hail.

SOURCE...Radar indicated.

IMPACT...Hail damage to vehicles is expected. Expect wind damage to 
         roofs, siding, and trees.

Locations impacted include...
Dodgeville, Mineral Point, Highland, Centerville, Linden, Waldwick,
Cobb, Rewey, Governor Dodge St Park, Edmund, Blackhawk Lake Rec Area,
London, and Jonesdale.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 4307 9043 4311 9021 4313 9002 4281 8999
      4281 9043
TIME...MOT...LOC 2247Z 264DEG 36KT 4295 9035 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

WAGNER

Area Forecast Discussion
National Weather Service Milwaukee/Sullivan WI
343 PM CDT Wed Apr 15 2026

.KEY MESSAGES...

- A Slight Risk (2 out of 5) for severe weather exists this
  afternoon. Primary risks will be hail and gusty winds, though
  the strength of the storms is not expected to be comparable to
  yesterday. Southwest Wisconsin and areas along the WI/IL
  border have the best chances to see a strong to severe storm.

- Heavy rainfall from more thunderstorms this afternoon and
  evening could lead to additional periods of flooding into
  Thursday morning. A Flood Watch has been issued for all of
  southern Wisconsin.

- Additional windows for heavy rainfall, flooding, and severe
  thunderstorms Friday into Saturday.

&&

.SHORT TERM...
Issued 335 PM CDT Wed Apr 15 2026

Tonight through Thursday night:

More thunderstorms are possible this evening as return flow is
expected to advect appreciable SBCAPE from 1000 to 1500 J/kg
into southwest WI and up to the WI/IL border. Storms tonight may
be a bit weaker than yesterday given skinnier CAPE profiles, but
low level instability, effective shear around 40 knots, and
some curvature in the hodographs will support another round of
gusty winds and hail. An isolated tornado can't be ruled out
along the WI/IL border given the low level turning in the
hodographs and low level instability, provided a low-topped
supercell forms in the environment this afternoon.

Storms will quickly grow upscale after sunset, leading to more
widespread rain. Training thunderstorms may lead to more flash
flooding tonight given the wealth of rain we've had this week. A
Flood Watch is in effect from 4pm this afternoon to 7am Thursday
for the expected rainfall tonight. A widespread 1 to 2 inches
may fall, with locally higher amounts possible where any
thunderstorms track.

Storms largely move offshore tonight around midnight, with more
scattered rain possible between midnight and 7am. Rain should
then largely taper off Thursday morning, with dry conditions
Thursday afternoon. A weak surface ridge will then move overhead
Thursday night.

CMiller

&&

.LONG TERM...
Issued 335 PM CDT Wed Apr 15 2026

Friday through Wednesday:

A strong cold front is expected to move through Friday afternoon
and evening and is expected to lead to another round of severe
weather. At this time the GFS depicts strong warm ahead of the
front which will allow dew points in the 60s to return
northward. Model soundings depict 40 knots of effective shear
amid moderate instability of 2000 J/kg, with low level turning
in the hodographs. This would support all modes of severe
weather again for the area. At this time the SPC has included
southwest and south central Wisconsin in an enhanced risk for
severe weather.

The cold front will then come crashing through Friday night into
Saturday, and temperatures will dip into upper 40s to low 50s
for the weekend. Saturday is expected to be cool and breezy,
with breaks in the clouds late in the day. Sunday will feature
similar conditions but will be a tad bit sunnier as a high
pressure center moves overhead.

Warmth is then expected to return next week Tuesday as a ridge
builds over the central United States. The middle of next week
then looks active again as a low pressure moves off of the lee
of the Rockies.

CMiller

&&

.AVIATION...
Issued 307 PM CDT Wed Apr 15 2026

MVFR and VFR conditions generally exist over most of the area
while IFR is hanging on over east central WI. Thunderstorms are
expected to move in late this afternoon and evening into the
west and grow upscale, leading to widespread rain over the area.
Before storms grow upscale, hail and gusty winds will be
possible with any strong storms over southwest Wisconsin and the
WI/IL border. Winds will generally be light and variable
overnight as a front sinks south over the region, becoming
northerly by daybreak on Thursday. More fog is possible tonight
mainly over southeast, east central and central WI, with some
dense fog possible.

CMiller

&&

.MARINE...
Issued 251 PM CDT Wed Apr 15 2026

A stationary front will remain parked over the middle third of
the lake this afternoon, slowly sinking south to the southern
end of the lake by noon Thursday. A Marine Dense Fog Advisory
continues until Thursday morning while this front lingers.
Winds will remain southerly south of the front and modestly
breezy, while winds north of the front will remain light and
variable to northerly during this time. The front will then
clear the lake Thursday afternoon and northerly winds will
prevail over whole lake. Winds will become light and variable
briefly Thursday night as a weak ridge passes over the lake,
with winds then becoming southerly and breezy Friday ahead of
low pressure of 29.6 inches approaching from the west. Gusty
northwest winds then return following a cold front Friday night.

Additional thunderstorms are forecast over the southern
third of Lake Michigan this evening into tonight. A few storms
could be severe with large hail being the primary concern.
Additional storms are possible Friday into Saturday, with a few
stronger storms possible.

CMiller

&&

.MKX WATCHES/WARNINGS/ADVISORIES...
WI...Flood Watch...WIZ046-WIZ047-WIZ051-WIZ052-WIZ056-WIZ057-WIZ058-
     WIZ059-WIZ060-WIZ062-WIZ063-WIZ064-WIZ065-WIZ066-WIZ067-
     WIZ068-WIZ069-WIZ070-WIZ071-WIZ072 until 7 AM Thursday.

LM...Dense Fog Advisory...LMZ080-LMZ261-LMZ362-LMZ364-LMZ366-LMZ563-
     LMZ565-LMZ567-LMZ643-LMZ644-LMZ645-LMZ646-LMZ669-LMZ671-
     LMZ673-LMZ675-LMZ777-LMZ779-LMZ868-LMZ870-LMZ872-LMZ874-
     LMZ876-LMZ878 until 7 AM Thursday.

&&

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Hazardous Weather Outlook
National Weather Service Milwaukee/Sullivan WI
342 PM CDT Wed Apr 15 2026

WIZ046-047-051-052-056>060-062>072-162045-
Marquette-Green Lake-Fond du Lac-Sheboygan-Sauk-Columbia-Dodge-
Washington-Ozaukee-Iowa-Dane-Jefferson-Waukesha-Milwaukee-
Lafayette-Green-Rock-Walworth-Racine-Kenosha-
342 PM CDT Wed Apr 15 2026

This Hazardous Weather Outlook is for portions of east central
Wisconsin, south central Wisconsin and southeast Wisconsin.

.DAY ONE...Tonight

A Slight Risk (2 out of 5) for severe weather exists this
afternoon. Primary risks will be hail, gusty winds, though an
isolated tornado can't be ruled out. Southwest Wisconsin and
areas along the WI/IL border have the best chances to see a strong
to severe storm.

Heavy rainfall from more thunderstorms this afternoon and
evening could lead to additional periods of flooding into
Thursday morning. A Flood Watch has been issued for all of
southern Wisconsin.

.DAYS TWO THROUGH SEVEN...Thursday through Wednesday

Additional windows for heavy rainfall, flooding, and severe
thunderstorms Friday into Saturday.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed this evening and again on Friday.

LMZ643>646-162045-
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-
342 PM CDT Wed Apr 15 2026

This Hazardous Weather Outlook is for the nearshore waters from
Sheboygan Wisconsin to Winthrop Harbor Illinois.

.DAY ONE...Tonight

Dense fog continues for the whole lake through tonight.
Thunderstorms may be possible over the southern end of the lake.

.DAYS TWO THROUGH SEVEN...Thursday through Wednesday

Chances for thunderstorms continue through the end of the week,
with some strong to severe storms possible Friday evening.

Fog may continue into early Thursday afternoon.

LMZ080-261-362-364-366-563-565-567-669-671-673-675-777-779-868-
870-872-874-876-878-162045-
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-
342 PM CDT Wed Apr 15 2026

This Hazardous Weather Outlook is for the open waters of Lake
Michigan.

.DAY ONE...Tonight

Dense fog continues for the whole lake through tonight.
Thunderstorms may be possible over the southern end of the lake.

.DAYS TWO THROUGH SEVEN...Thursday through Wednesday

Chances for thunderstorms continue through the end of the week,
with some strong to severe storms possible Friday evening.

Fog may continue into early Thursday afternoon.

www.weather.gov/mkx

Preliminary Local Storm Report...Corrected
National Weather Service Milwaukee/Sullivan WI
313 PM CDT Wed Apr 15 2026

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0628 PM     Tornado          4 SSW Endeavor          43.66N 89.50W
04/14/2026                   Marquette          WI   NWS Storm Survey

            Corrects previous tornado report date and
            time from 4 SSW Endeavor. NWS Storm Survey
            found EF1 tornado damage southwest of
            Endeavor. Brief tornado had a 50 yard wide
            path. Total destruction of
            barn/outbuildings. Multiple snapped and
            topped trees.

&&

Wood

Preliminary Local Storm Report
National Weather Service Milwaukee/Sullivan WI
323 PM CDT Wed Apr 15 2026

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0745 PM     Flash Flood      3 NNE Wauwatosa         43.11N 88.00W
04/14/2026                   Milwaukee          WI   Public

            Video and pictures of stranded vehicles
            stuck in water on social media in several
            locations across northwest Milwaukee.

&&

Preliminary Local Storm Report
National Weather Service Milwaukee/Sullivan WI
329 PM CDT Wed Apr 15 2026

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0630 PM     Flash Flood      1 ENE Watertown         43.19N 88.71W
04/14/2026                   Jefferson          WI   Emergency Mngr

            A few stranded vehicles across Watertown. A
            3-4 ft wide sinkhole. Time estimated from
            radar.

&&

Preliminary Local Storm Report
National Weather Service Milwaukee/Sullivan WI
447 PM CDT Wed Apr 15 2026

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1248 AM     Tornado          4 S Beaver Dam          43.41N 88.84W
04/14/2026                   Dodge              WI   NWS Storm Survey

            NWS Storm Survey found EF0 tornado damage
            south of Beaver Dam. A brief tornado with
            maximum winds of 85 MPH. Attached garage and
            part of house roof lofted approximately 100
            ft. Minor roof and facia damage to a few
            additional homes.

&&

Special Weather Statement
National Weather Service Milwaukee/Sullivan WI
449 PM CDT Wed Apr 15 2026

WIZ056-062-152245-
Iowa WI-Sauk WI-
449 PM CDT Wed Apr 15 2026

...STRONG THUNDERSTORMS WILL IMPACT IOWA AND CENTRAL SAUK COUNTIES
THROUGH 545 PM CDT...

At 448 PM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from 7 miles west of Richland Center to 7 miles west
of Muscoda to near Boscobel. Movement was east at 40 mph.

HAZARD...Wind gusts up to 50 mph and half inch hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor hail damage to vegetation is
         possible.

Locations impacted include...
Reedsburg, Dodgeville, Spring Green, West Baraboo, Highland, Arena,
Plain, North Freedom, Ridgeway, Avoca, Orion, Linden, Cobb, Rock
Springs, Clyde, Loganville, Lime Ridge, Governor Dodge St Park,
Edmund, and Blackhawk Lake Rec Area.

This includes the following highways...
 U.S. Highway 12 between mile markers 214 and 217.
 U.S. Highway 151 near mile marker 47.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 4320 9043 4321 9030 4317 9019 4350 9019
      4355 8977 4324 8980 4321 8984 4305 8984
      4285 9042
TIME...MOT...LOC 2148Z 254DEG 35KT 4337 9052 4322 9057 4310 9071

MAX HAIL SIZE...0.50 IN
MAX WIND GUST...50 MPH

WAGNER

Preliminary Local Storm Report
National Weather Service Milwaukee/Sullivan WI
508 PM CDT Wed Apr 15 2026

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0829 PM     Tornado          5 SW East Troy          42.74N 88.47W
04/14/2026                   Walworth           WI   NWS Storm Survey

            NWS Storm Survey found EF1 tornado damage
            southwest of East Troy. Maximum winds of 100
            MPH.

&&