Special Marine Warning
Issued by NWS Grand Rapids, MI

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000
WHUS53 KGRR 110015
SMWGRR
LMZ847-872-110115-
/O.NEW.KGRR.MA.W.0036.170811T0015Z-170811T0115Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SPECIAL MARINE WARNING
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
815 PM EDT THU AUG 10 2017

THE NATIONAL WEATHER SERVICE IN GRAND RAPIDS HAS ISSUED A

* SPECIAL MARINE WARNING FOR...
  NEARSHORE AND OPEN WATERS FROM GRAND HAVEN TO WHITEHALL MI...

* UNTIL 915 PM EDT

* AT 814 PM EDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING
  WATERSPOUTS AND WINDS ABOVE 35 KNOTS WAS LOCATED 25 NM WEST OF THE
  MUSKEGON LIGHT...MOVING EAST AT 20 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. HAZARDOUS CONDITIONS ABOVE DECK IN
           BRIEFLY HIGHER WINDS AND SUDDENLY HIGHER WAVES.

* LOCATIONS IMPACTED INCLUDE...
  THE MUSKEGON LIGHT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THUNDERSTORMS CAN PRODUCE SUDDEN WATERSPOUTS. WATERSPOUTS CAN EASILY
OVERTURN BOATS AND CREATE LOCALLY HAZARDOUS SEAS. SEEK SAFE HARBOR
IMMEDIATELY.

&&

LAT...LON 4317 8705 4335 8703 4336 8642 4331 8639
      4314 8628 4307 8625
TIME...MOT...LOC 0014Z 274DEG 22KT 4326 8694

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

$$

JK


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