Special Weather Statement, NWS Milwaukee, WI

Area Forecast Discussion
National Weather Service Milwaukee/Sullivan WI
350 PM CDT Thu Apr 29 2021

.SHORT TERM...
(Issued 350 PM CDT Thu Apr 29 2021)

Tonight through Friday night:

The mid level wave and cold front has begun to move through
Wisconsin this afternoon. Showers and thunderstorms have begun
developing along the cold front. There is some decent low level
lapse rates and some limited convective potential so a few pulse
thunderstorms will be possible through the evening. The scattered
precipitaion will move along the cold front, which should be
clear of southern Wisconsin by tonight.

Cold air advection will increase behind the front and high
pressure will begin to move into the Great Lakes Region tonight.
Skies will clear and the wind will shift from northwesterly to
southeasterly as the sfc high pressure passes over Wisconsin
Friday night.

Gehring

&&

.LONG TERM...
(Issued 350 PM CDT Thu Apr 29 2021)

Saturday through Thursday:

A strong wave of low pressure will move across the nrn Great Lakes
Sat-Sat eve, which will produce windy conditions over srn WI. Swly
winds will gust to 30-45 mph with a potential Wind Advisory needed
over se WI. The breezy winds, strong warm advection and thermal
ridge, will boost high temps into the lower 80s including the lake
front. A cold front extending from the low will then stall over
central WI for Saturday night into Sunday evening. Thus, srn WI
will remain in the warm sector for Sunday, but with possibly more
clouds. High temps in the 70s, but cannot rule out 80 degrees in
the far south. A wave of low pressure and a vort max or two will
then move across srn WI Sunday night into Monday. There is
uncertainty with the timing and overall evolution of the pressure
wave and disturbances aloft, but enough confidence for likely
showers and sct tstorms.

Weak high pressure will then settle into the vicinity of srn WI
for Tue-Wed. A digging upper trough may then approach the region
for Thu-Thu nt.

Gehring

&&

.AVIATION...
(Issued 350 PM CDT Thu Apr 29 2021)

VFR conditions tnt-Fri nt. High based scattered showers and
isolated tstorms will move across srn WI into the early evening.
Gusty nwly sfc winds will subside with sunset.

Patterson

&&

.MARINE...
(Issued 350 PM CDT Thu Apr 29 2021)

A Gale Watch has been issued for the southern one third of Lake
MI, and the nearshore waters from Sheboygan to Winthrop Harbor,
IL for late Saturday morning into the early evening for the
potential for southwesterly gales. This is due to a strong wave of
low pressure moving across the nrn Great Lakes.

Gehring

&&

.MKX WATCHES/WARNINGS/ADVISORIES...
WI...None.
LM...Gale Watch...LMZ080-LMZ643-LMZ644-LMZ645-LMZ646-LMZ673-LMZ675-
     LMZ777-LMZ779-LMZ874-LMZ876-LMZ878...10 AM Saturday to 9 PM
     Saturday.

&&

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Hazardous Weather Outlook...UPDATED
National Weather Service Milwaukee/Sullivan WI
610 PM CDT Thu Apr 29 2021

WIZ046-047-051-052-056>060-062>072-302315-
Marquette-Green Lake-Fond du Lac-Sheboygan-Sauk-Columbia-Dodge-
Washington-Ozaukee-Iowa-Dane-Jefferson-Waukesha-Milwaukee-
Lafayette-Green-Rock-Walworth-Racine-Kenosha-
610 PM CDT Thu Apr 29 2021

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

.DAY ONE...Tonight

Scattered showers and isolated thunderstorms will diminish across
southeast Wisconsin early this evening. Wind gusts to 40 to 50
mph may accompany some of the showers early this evening.

.DAYS TWO THROUGH SEVEN...Friday through Thursday

There is a slight chance of thunderstorms Sunday afternoon and
night.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed.

LMZ643>646-302315-
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-
610 PM CDT Thu Apr 29 2021

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

.DAY ONE...Tonight

Scattered showers producing wind gusts of 30 to 40 knots will
diminish early this evening.

A period of gusty northwest winds will approach Small Craft
Advisory levels tonight.

.DAYS TWO THROUGH SEVEN...Friday through Thursday

Gusty southwest winds may bring Small Craft Advisory conditions
Saturday into Saturday night.

There is a slight chance of thunderstorms Saturday evening and
again Sunday afternoon and night.

LMZ080-261-362-364-366-563-565-567-669-671-673-675-777-779-868-
870-872-874-876-878-302315-
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-
610 PM CDT Thu Apr 29 2021

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

.DAY ONE...Tonight

No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Friday through Thursday

A Gale Watch is in effect across the southern third of the lake
for gusty southwest winds Saturday into Saturday night.

There is a slight chance of thunderstorms Saturday afternoon and
evening and again Sunday night.

www.weather.gov/mkx

Kavinsky

Special Weather Statement
National Weather Service Milwaukee/Sullivan WI
432 PM CDT Thu Apr 29 2021

WIZ057-058-063-064-292215-
Dodge-Columbia-Jefferson-Dane-

...A PAIR OF STRONG THUNDERSTORMS WILL AFFECT SOUTHEASTERN
COLUMBIA... NORTHEASTERN DANE...NORTHWESTERN JEFFERSON AND
SOUTHWESTERN DODGE COUNTIES...

At 430 PM CDT, a strong thunderstorm was located 7 miles west of
Columbus, moving southeast at 40 mph. A second strong storm was
located near Doylestown moving southeast.

Winds of 30 to 40 mph and pea size hail are possible with these
storms.

Locations impacted include...
Watertown, Lake Mills, Columbus, Marshall, Waterloo, Fall River,
Lebanon, Milford, Reeseville, Otsego, Richwood, Clyman, Lowell,
Doylestown, Deansville, East Bristol, Hubbleton and Danville.

LAT...LON 4329 8930 4349 8909 4329 8859 4300 8888
TIME...MOT...LOC 2130Z 308DEG 33KT 4330 8916

KAVINSKY

Special Weather Statement
National Weather Service Milwaukee/Sullivan WI
441 PM CDT Thu Apr 29 2021

WIZ051-052-058>060-065-066-292215-
Dodge-Waukesha-Milwaukee-Sheboygan-Washington-Ozaukee-Fond Du Lac-

...AN AREA OF STRONG THUNDERSTORMS WILL AFFECT OZAUKEE...NORTHERN
MILWAUKEE...SOUTHEASTERN FOND DU LAC...NORTHEASTERN WAUKESHA...
WASHINGTON...EASTERN DODGE AND SOUTHWESTERN SHEBOYGAN COUNTIES...

At 440 PM CDT, strong thunderstorms were clustered over Horicon,
moving southeast at 40 mph.

Winds of 30 to 45 mph and pea size hail are possible with these
storms.

Locations impacted include...
Milwaukee, Wauwatosa, Menomonee Falls, West Bend, Mequon, Hartford,
Whitefish Bay, Brown Deer, Grafton, Cedarburg, Port Washington,
Sussex, Jackson, Fox Point, Mayville, Slinger, Saukville, Bayside,
Kewaskum and Horicon.

If outdoors, consider seeking shelter inside a building.

LAT...LON 4338 8787 4326 8791 4318 8788 4312 8790
      4307 8787 4303 8790 4336 8875 4364 8870
      4356 8779 4349 8779
TIME...MOT...LOC 2140Z 292DEG 36KT 4346 8862

MRC

Special Weather Statement
National Weather Service Milwaukee/Sullivan WI
510 PM CDT Thu Apr 29 2021

WIZ064>066-069>072-292315-
Walworth-Rock-Waukesha-Milwaukee-Racine-Jefferson-Kenosha-

...AN AREA OF STRONG THUNDERSTORMS WILL AFFECT PORTIONS OF
SOUTH CENTRAL AND SOUTHEAST WISCONSIN THROUGH 6 PM...

At 508 PM CDT, strong thunderstorms were clustered near Lac La Belle,
or near Watertown, moving southeast at 35 mph.

Winds of 30 to 40 mph and pea size hail are possible with these
storms.

Locations impacted include...
Milwaukee, Kenosha, Racine, Waukesha, Janesville, West Allis,
Wauwatosa, New Berlin, Brookfield, Beloit, Greenfield, Menomonee
Falls, Oak Creek, Mount Pleasant, Muskego, Watertown, South
Milwaukee, Pleasant Prairie, Cudahy and Antioch.

If outdoors, consider seeking shelter inside a building.

LAT...LON 4250 8936 4285 8919 4285 8901 4320 8901
      4319 8789 4312 8790 4307 8787 4302 8790
      4296 8785 4288 8785 4283 8780 4268 8779
      4261 8782 4249 8780
TIME...MOT...LOC 2208Z 298DEG 29KT 4313 8863

MRC

Special Weather Statement
National Weather Service Milwaukee/Sullivan WI
549 PM CDT Thu Apr 29 2021

WIZ065-066-071-292315-
Waukesha-Milwaukee-Racine-

...A LINE OF STRONG THUNDERSTORMS WILL AFFECT MILWAUKEE...
NORTHEASTERN RACINE AND SOUTHEASTERN WAUKESHA COUNTIES...

At 549 PM CDT, radar indicated strong thunderstorms were located
along a line extending from Whitefish Bay to near New Berlin.
Movement was southeast at 40 mph.

Winds of 40 to 50 mph and pea size hail are possible with these
storms.

Locations impacted include...
Milwaukee, Racine, West Allis, Wauwatosa, New Berlin, Brookfield,
Greenfield, Oak Creek, Mount Pleasant, Muskego, South Milwaukee,
Cudahy, Whitefish Bay, Greendale, Brown Deer, St. Francis, Hales
Corners, Sturtevant, Fox Point and Elm Grove.

LAT...LON 4276 8777 4271 8777 4267 8779 4267 8785
      4290 8829 4318 8795 4316 8788 4312 8790
      4310 8787 4307 8787 4305 8789 4302 8790
      4296 8785 4288 8785 4285 8783 4278 8775
TIME...MOT...LOC 2249Z 297DEG 35KT 4312 8791 4294 8817

KAVINSKY

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
624 PM CDT THU APR 29 2021

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

0519 PM     TSTM WND GST     2 S PEWAUKEE            43.05N 88.25W
04/29/2021  M53 MPH          WAUKESHA           WI   AWOS

            AWOS STATION KUES WAUKESHA AIRPORT.

0455 PM     TSTM WND GST     3 ENE MONROE            42.62N 89.60W
04/29/2021  M52 MPH          GREEN              WI   AWOS

            AWOS STATION KEFT MONROE.

0545 PM     TSTM WND GST     2 ENE BUTLER            43.12N 88.03W
04/29/2021  M45 MPH          MILWAUKEE          WI   AWOS

            AWOS STATION KMWC MILWAUKEE LAWREN.

&&

Special Weather Statement
National Weather Service Milwaukee/Sullivan WI
630 PM CDT Thu Apr 29 2021

WIZ072-300000-
Kenosha-

...SHOWERS WITH GUSTY WINDS WILL AFFECT KENOSHA COUNTY...

At 629 PM CDT, an area of showers was located over Pleasant Prairie,
moving southeast at 40 mph.

Winds of 40 to 50 mph are possible with these showers.

Locations impacted include...
Kenosha, Pleasant Prairie, Paddock Lake, Camp Lake, Winthrop Harbor,
Wheatland, Silver Lake, Salem, Bristol, Paris, Brighton and Somers.

If outdoors, consider seeking shelter inside a building.

LAT...LON 4261 8823 4261 8819 4265 8819 4267 8816
      4267 8787 4266 8781 4261 8782 4259 8781
      4252 8781 4249 8780 4250 8816
TIME...MOT...LOC 2329Z 300DEG 35KT 4252 8791

MRC