654
FZUS73 KLOT 122210
MWSLOT

Marine Weather Statement
National Weather Service Chicago/Romeoville
510 PM CDT Tue Aug 12 2025

LMZ740>745-777-779-122315-
/O.CON.KLOT.MA.W.0034.000000T0000Z-250812T2315Z/
510 PM CDT Tue Aug 12 2025

...A SPECIAL MARINE WARNING REMAINS IN EFFECT UNTIL 615 PM CDT...

For the following areas...

  Nearshore Waters from Winthrop Harbor to Calumet Harbor...
  Nearshore Waters from Calumet Harbor to Michigan City...
  Open Waters from Winthrop Harbor to Michigan City out to Mid
Lake...

At 509 PM CDT, numerous thunderstorms were moving across
southwestern Lake Michigan. Additional thunderstorms were moving
offshore from northeastern Illinois. All storms are moving eastward
at around 25 knots, and may produce wind gusts in excess of 34
knots.

HAZARD...Wind gusts 34 knots or greater.

SOURCE...Radar indicated.

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

Locations impacted include...
Harrison-Dever Crib, Calumet Harbor, Marina Shores at Dune Harbor,
Michigan City, 59th Street Marina, Hammond Marina, Wilmette Harbor,
Indiana Harbor, Jackson Park Harbor, Burns Harbor, and DuSable
Harbor.

Move to safe harbor immediately as gusty winds and high waves are
expected.


LAT...LON 4163 8716 4162 8732 4161 8733 4162 8733
      4165 8743 4168 8743 4169 8750 4178 8758
      4179 8758 4189 8760 4206 8767 4219 8777
      4226 8733 4228 8699 4213 8696 4179 8697
      4172 8690
TIME...MOT...LOC 2209Z 240DEG 23KT 4239 8705

HAIL...0.00IN
WIND...>34KTS

$$

Borchardt