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FZUS73 KGRR 160103

MWSGRR



Marine Weather Statement

National Weather Service Grand Rapids MI

903 PM EDT Thu May 15 2025



LMZ844>849-868-870-872-874-876-878-160315-

/O.CON.KGRR.MA.W.0010.000000T0000Z-250516T0315Z/

903 PM EDT Thu May 15 2025



...A SPECIAL MARINE WARNING REMAINS IN EFFECT UNTIL 1115 PM EDT...



For the following areas...

  Nearshore and Open Waters from St Joseph to Manistee MI...



At 902 PM EDT, severe thunderstorms were located along a line

extending from 21 nm southeast of Rawley Point Light to 19 nm

southwest of Little Sable Point Light to 18 nm southwest of Muskegon

Light to 28 nm west of South Haven Light, moving east at 40 knots.



HAZARD...Wind gusts in excess of 50 knots and large hail.



SOURCE...Radar indicated.



IMPACT...Boats could suffer significant structural damage in high 

         winds and hail. Small craft could capsize in suddenly 

         higher waves.



Locations impacted include...

South Haven Light, Saugatuck Pier Heads, St. Joseph Light, White Lake

Pier Heads, Mona Lake Channel, The White Lake Pierheads, Little Sable

Point Light, Grand Haven Light, and Muskegon Light.



PRECAUTIONARY/PREPAREDNESS ACTIONS...



A Tornado Watch remains in effect until 300 AM EDT for southwestern

and west central Michigan...and the adjacent waters of Lake Michigan.



Move to safe harbor until hazardous weather passes.



Frequent lightning is occurring with these storms. If caught on the

open water stay below deck if possible, keep away from ungrounded

metal objects.



&&



LAT...LON 4212 8696 4343 8715 4371 8712 4421 8697

      4428 8642 4426 8634 4406 8652 4381 8643

      4363 8654 4308 8625 4269 8621 4234 8630

      4212 8649 4211 8649

TIME...MOT...LOC 0102Z 265DEG 40KT 4406 8707 4344 8689 4308 8672 4254

8691



HAIL...>.75IN

WIND...50KTS



$$



JC