958
FZUS73 KGRB 210030
MWSGRB
MARINE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREEN BAY WI
730 PM CDT MON JUL 20 2026
LMZ521-541-563-210045-
/O.CON.KGRB.MA.W.0040.000000T0000Z-260721T0045Z/
730 PM CDT MON JUL 20 2026
..SPECIAL MARINE WARNING REMAINS IN EFFECT UNTIL 745 PM CDT
FOR THE FOLLOWING AREAS...
NEARSHORE WATERS FROM WASHINGTON ISLAND TO STURGEON BAY...
CENTRAL BAY OF GREEN BAY...
OPEN WATERS OF LAKE MICHIGAN FROM ROCK ISLAND PASSAGE TO STURGEON
BAY...
AT 730 PM CDT, A SEVERE THUNDERSTORM CAPABLE OF PRODUCING WATERSPOUTS
WAS LOCATED 5 NM SOUTHEAST OF ROCK ISLAND, MOVING EAST AT 50 KNOTS.
HAZARD...WATERSPOUTS, LARGE HAIL, AND WIND GUSTS TO NEARLY 50 KNOTS.
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. LARGE HAIL COULD
RESULT IN STRUCTURAL DAMAGE.
THIS STRONG THUNDERSTORM WILL REMAIN OVER MAINLY OPEN WATERS.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
MOVE TO SAFE HARBOR UNTIL HAZARDOUS WEATHER PASSES.
LAT...LON 4541 8710 4540 8695 4538 8696 4535 8694
4534 8696 4530 8690 4531 8690 4533 8692
4533 8687 4540 8685 4540 8686 4541 8682
4536 8669 4533 8629 4510 8648 4529 8698
4533 8705
TIME...MOT...LOC 2350Z 289DEG 49KT 4557 8744
WATERSPOUT...POSSIBLE
MAX HAIL SIZE...>.75 IN
MAX WIND GUST...50 KTS
UHLMANN
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