966
WHUS53 KGRB 210245
SMWGRB
LMZ563-210300-
/O.NEW.KGRB.MA.W.0045.260721T0245Z-260721T0300Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SPECIAL MARINE WARNING
NATIONAL WEATHER SERVICE GREEN BAY WI
945 PM CDT MON JUL 20 2026
THE NATIONAL WEATHER SERVICE IN GREEN BAY HAS ISSUED A
* SPECIAL MARINE WARNING FOR...
OPEN WATERS OF LAKE MICHIGAN FROM ROCK ISLAND PASSAGE TO STURGEON
BAY...
* UNTIL 1000 PM CDT.
* AT 945 PM CDT, A STRONG THUNDERSTORM WAS LOCATED 24 NM SOUTHEAST OF
ROCK ISLAND, OR 23 NM SOUTHEAST OF DETROIT ISLAND, MOVING SOUTHEAST
AT 30 KNOTS.
HAZARD...WIND GUSTS TO 40 KNOTS.
SOURCE...RADAR INDICATED.
IMPACT...SMALL CRAFT COULD BE DAMAGED IN BRIEFLY HIGHER WINDS AND
SUDDENLY HIGHER WAVES.
* THIS STRONG THUNDERSTORM WILL REMAIN OVER MAINLY OPEN WATERS.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
MOVE TO SAFE HARBOR UNTIL HAZARDOUS WEATHER PASSES.
LAT...LON 4514 8667 4530 8642 4529 8632 4513 8644
4508 8650
TIME...MOT...LOC 0244Z 295DEG 31KT 4515 8643
MAX HAIL SIZE...0.00 IN
MAX WIND GUST...40 KTS
UHLMANN
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