


Marine Weather Statement
Issued by NWS Chicago, IL
Issued by NWS Chicago, IL
Versions:
1
158 FZUS73 KLOT 181210 MWSLOT Marine Weather Statement National Weather Service Chicago/Romeoville 710 AM CDT Sat Oct 18 2025 LMZ742>745-779-181300- 710 AM CDT Sat Oct 18 2025 ...A STRONG THUNDERSTORM APPROACHING THE WATERS... The areas affected include... Nearshore Waters from Northerly Island to Calumet Harbor... Nearshore Waters from Calumet Harbor to Michigan City... Open Waters from Wilmette Harbor to Michigan City out to Mid Lake... At 710 AM CDT, Doppler radar indicated a strong thunderstorm, capable of producing winds to around 30 knots and small hail. This thunderstorm was located over Hammond Marina, or near Calumet Harbor, moving northeast at 45 knots. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners can expect gusty winds to around 30 knots, locally higher waves, and lightning strikes. Boaters should seek safe harbor immediately until this storm passes. && LAT...LON 4162 8733 4164 8743 4165 8744 4168 8743 4167 8744 4167 8747 4171 8753 4175 8753 4178 8757 4199 8701 4187 8697 4179 8697 4179 8696 4173 8691 4172 8692 4165 8711 4165 8714 4163 8716 4162 8732 4161 8732 $$ DK