666
WHUS53 KGRR 182241
SMWGRR
LMZ848-849-868-870-182345-
/O.NEW.KGRR.MA.W.0066.260818T2241Z-260818T2345Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Special Marine Warning
National Weather Service Grand Rapids MI
641 PM EDT Tue Aug 18 2026

The National Weather Service in Grand Rapids has issued a

* Special Marine Warning for...
  Nearshore and Open Waters from Whitehall to Manistee MI...

* Until 745 PM EDT.

* At 641 PM EDT, strong thunderstorms were located along a line
  extending from 15 nm west of Pentwater Pier Heads to 13 nm
  southwest of Little Sable Point Light, moving east at 20 knots.

  HAZARD...Wind gusts to 40 knots.

  SOURCE...Radar.

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

* Locations impacted include...
  Little Sable Point Light and Pentwater Pier Heads.

LAT...LON 4379 8644 4374 8646 4368 8653 4363 8654
      4351 8647 4341 8645 4346 8689 4387 8689
      4392 8645 4385 8643
TIME...MOT...LOC 2241Z 270DEG 18KT 4380 8680 4353 8680

HAIL...0.00IN
WIND...40KTS

$$

DUKE