459 

WHUS53 KMKX 172309
SMWMKX
LMZ643-644-669-671-180215-
/O.NEW.KMKX.MA.W.0017.260417T2309Z-260418T0215Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Special Marine Warning
National Weather Service Milwaukee/Sullivan WI
609 PM CDT Fri Apr 17 2026

The National Weather Service in Milwaukee/Sullivan has issued a

* Special Marine Warning for...
  Lake Michigan nearshore and open waters to mid lake from Sheboygan
  WI to North Port Light WI...

* Until 915 PM CDT.

* At 609 PM CDT, severe thunderstorms were located along a line
  extending from 12 nm west of Cedar Grove to 25 nm west of
  Milwaukee, moving northeast at 25 knots.

  HAZARD...Wind gusts 34 knots or greater and large hail.

  SOURCE...Radar.

  IMPACT...Small craft could be damaged in briefly higher winds and
           suddenly higher waves. Large hail could result in
           structural damage.

* Locations impacted include...
  Port Washington.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until 800 PM CDT for southeastern
and east central Wisconsin.

Move to safe harbor until hazardous weather passes.

&&

LAT...LON 4383 8710 4370 8712 4343 8715 4330 8713
      4323 8791 4339 8787 4345 8781 4358 8778
      4368 8770 4375 8771 4376 8770 4379 8772
      4389 8773 4390 8759
TIME...MOT...LOC 2309Z 235DEG 23KT 4362 8809 4320 8852

HAIL...>.75IN
WIND...>34KTS

$$

WAGNER






223 

WHUS53 KMKX 172352
SMWMKX
LMZ644>646-671-673-675-180245-
/O.NEW.KMKX.MA.W.0018.260417T2352Z-260418T0245Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Special Marine Warning
National Weather Service Milwaukee/Sullivan WI
652 PM CDT Fri Apr 17 2026

The National Weather Service in Milwaukee/Sullivan has issued a

* Special Marine Warning for...
  Lake Michigan nearshore and open waters to mid lake from Port
  Washington WI to Winthrop Harbor IL...

* Until 945 PM CDT.

* At 652 PM CDT, severe thunderstorms capable of producing
  waterspouts were located along a line extending from 16 nm west of
  Milwaukee to 16 nm west of Oak Creek to 24 nm west of South
  Milwaukee, moving northeast at 25 knots.

  HAZARD...Waterspouts, wind gusts to 40 knots, and large hail.

  SOURCE...Radar.

  IMPACT...Waterspouts can easily overturn boats and create locally
           hazardous seas. Small craft could be damaged in briefly
           higher winds and suddenly higher waves. Large hail could
           result in structural damage.

* Severe thunderstorms will remain over mainly open waters.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until 800 PM CDT for southeastern
Wisconsin.

Move to safe harbor until hazardous weather passes.

&&

LAT...LON 4335 8788 4338 8714 4246 8702 4248 8780
      4261 8782 4278 8775 4286 8784 4297 8785
      4303 8790 4307 8786 4313 8790 4318 8788
      4324 8791
TIME...MOT...LOC 2352Z 242DEG 24KT 4308 8835 4288 8828 4276 8838

WATERSPOUT...POSSIBLE
HAIL...>.75IN
WIND...40KTS

$$

WAGNER