641
FZUS73 KGRR 062245
MWSGRR

Marine Weather Statement
National Weather Service Grand Rapids MI
645 PM EDT Mon Oct 6 2025

LMZ874-062255-
/O.CAN.KGRR.MA.W.0036.000000T0000Z-251006T2315Z/
645 PM EDT Mon Oct 6 2025

...THE SPECIAL MARINE WARNING IS CANCELLED...

The affected areas were...
  Open Waters from Holland to Grand Haven MI...

The thunderstorms have moved out of the warned area
and no longer pose a significant threat to boaters.

LAT...LON 4213 8656 4240 8678 4277 8676 4277 8621
      4258 8623 4239 8628 4225 8635 4211 8649
TIME...MOT...LOC 2245Z 258DEG 31KT 4260 8666 4235 8666

$$

LMZ844-845-876-878-062315-
/O.CON.KGRR.MA.W.0036.000000T0000Z-251006T2315Z/
645 PM EDT Mon Oct 6 2025

...A SPECIAL MARINE WARNING REMAINS IN EFFECT UNTIL 715 PM EDT...

For the following areas...
  Nearshore and Open Waters from St Joseph to Holland MI...

At 645 PM EDT, strong thunderstorms producing waterspouts were
located along a line extending from 20 nm west of Saugatuck Pier
Heads to 15 nm northwest of St. Joseph Light, moving east at 30
knots.

HAZARD...Waterspouts, wind gusts 34 knots or greater, and small
         hail.

SOURCE...Radar indicated.

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

Locations impacted include...
South Haven Light, St. Joseph Light, and St. Joseph.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Thunderstorms can produce sudden waterspouts that can result in
locally hazardous seas. Seek safe harbor immediately.

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 4213 8656 4240 8678 4277 8676 4277 8621
      4258 8623 4239 8628 4225 8635 4211 8649
TIME...MOT...LOC 2245Z 258DEG 31KT 4260 8666 4235 8666

WATERSPOUT...OBSERVED
HAIL...<.75IN
WIND...>34KTS

$$

JC