####018001619####
FZUS73 KGRB 160116

MWSGRB



Marine Weather Statement

National Weather Service GREEN BAY WI

Issued by National Weather Service Milwaukee/Sullivan WI

816 PM CDT Thu May 15 2025



LMZ542-543-565-567-160215-

/O.CON.KGRB.MA.W.0005.000000T0000Z-250516T0215Z/

816 PM CDT Thu May 15 2025



...A SPECIAL MARINE WARNING REMAINS IN EFFECT UNTIL 915 PM CDT...



For the following areas...

NEARSHORE AND OPEN WATERS OF LAKE MICHIGAN FROM STURGEON BAY TO

SHEBOYGAN...



At 814 PM CDT, severe thunderstorms were located along a line

extending from 20 nm east of Kewaunee Pierhead Light to 24 nm

northwest of Little Sable Point Light, moving east at 20 knots. 

Other storms were approaching Lake Michigan from Manitowoc County. 



HAZARD...Wind gusts to 40 knots and large hail.



SOURCE...Radar indicated.



IMPACT...Small craft could be damaged in briefly higher winds and 

         suddenly higher waves. Large hail could result in 

         structural damage.



Locations impacted include...

Rawley Point Light, Manitowoc, and Two Rivers.



PRECAUTIONARY/PREPAREDNESS ACTIONS...



A Tornado Watch remains in effect until 1000 PM CDT for east central

Wisconsin.



Move to safe harbor until hazardous weather passes.



&&



LAT...LON 4390 8758 4390 8773 4402 8768 4406 8765

      4409 8765 4410 8768 4414 8761 4417 8762

      4413 8759 4416 8757 4415 8757 4419 8751

      4423 8751 4429 8754 4436 8752 4444 8687

      4413 8701 4383 8709

TIME...MOT...LOC 0114Z 267DEG 20KT 4441 8702 4385 8703 



HAIL...>.75IN

WIND...40KTS



$$



GEHRING

####018001782####
FZUS73 KGRB 160118

MWSGRB



Marine Weather Statement

National Weather Service GREEN BAY WI

Issued by National Weather Service Milwaukee/Sullivan WI

818 PM CDT Thu May 15 2025



LMZ521-522-541-542-563-565-160215-

/O.CON.KGRB.MA.W.0007.000000T0000Z-250516T0215Z/

818 PM CDT Thu May 15 2025



...A SPECIAL MARINE WARNING REMAINS IN EFFECT UNTIL 915 PM CDT...



For the following areas...

CENTRAL AND SOUTHERN BAY OF GREEN BAY...

NEARSHORE WATERS FROM WASHINGTON ISLAND TO TWO RIVERS...

OPEN WATERS OF LAKE MICHIGAN FROM ROCK ISLAND PASSAGE TO TWO

RIVERS...



At 818 PM CDT, strong thunderstorms were located along a line

extending from 9 nm northwest of Chambers Island to 22 nm east of

Kewaunee Pierhead Light, moving east at 40 knots.



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



SOURCE...Radar indicated.



IMPACT...Small craft could be damaged in briefly higher winds and 

         suddenly higher waves.



Locations impacted include...

Kewaunee Pierhead Light, Green Bay Harbor Entrance Light, Sherwood

Point Light, Chambers Island, Detroit Island, Peshtigo Reef Light,

Bay Shore Park, Cana Island Light, Whitefish Point, Egg Harbor, and

Oconto.



PRECAUTIONARY/PREPAREDNESS ACTIONS...



A Tornado Watch remains in effect until 1000 PM CDT for northeastern

Wisconsin.



Move to safe harbor until hazardous weather passes.



&&



LAT...LON 4538 8696 4533 8695 4534 8695 4541 8681

      4533 8629 4488 8670 4444 8688 4436 8752

      4448 8751 4448 8752 4509 8706 4530 8699

      4517 8724 4485 8739 4485 8759 4464 8777

      4455 8802 4493 8784 4499 8763 4541 8735

TIME...MOT...LOC 0118Z 269DEG 66KT 4529 8755 4444 8696 



HAIL...<.75IN

WIND...>34KTS



$$



GEHRING

####018000777####
FZUS73 KMKX 160120

MWSMKX



Marine Weather Statement

National Weather Service Milwaukee/Sullivan WI

820 PM CDT Thu May 15 2025



LMZ645-646-673-675-160130-

/O.EXP.KMKX.MA.W.0011.000000T0000Z-250516T0130Z/

820 PM CDT Thu May 15 2025



...THE SPECIAL MARINE WARNING WILL EXPIRE AT 830 PM CDT...



The affected areas were... 

Lake Michigan nearshore and open waters to mid lake from North Point

Light WI to Winthrop Harbor IL...



The thunderstorms have moved out of the area and no longer pose a

significant threat to boaters.



LAT...LON 4248 8780 4261 8782 4267 8781 4267 8779

      4271 8777 4276 8777 4278 8775 4280 8776

      4279 8707 4279 8706 4246 8702

TIME...MOT...LOC 0120Z 244DEG 42KT 4339 8655 4276 8639 



$$



BOXELL