Special Marine Warning
Issued by NWS Chicago, IL

Home |  Current Version |  Previous Version |  Text Only |  Print | Product List |  Glossary On
Versions: 1
796
WHUS53 KLOT 181744
SMWLOT
LMZ742>745-779-181845-
/O.NEW.KLOT.MA.W.0056.260718T1744Z-260718T1845Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Special Marine Warning
National Weather Service Chicago/Romeoville
1244 PM CDT Sat Jul 18 2026

The National Weather Service in Chicago has issued a

* Special Marine Warning for...

  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...

* Until 145 PM CDT.

* At 1243 PM CDT, strong thunderstorms were located along a line
  extending from 8 nm northwest of Michigan City to Calumet Harbor,
  moving southeast at 25 knots.

  HAZARD...Wind gusts to 40 knots.

  SOURCE...Radar.

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

* Locations impacted include...
  Indiana Harbor, Calumet Harbor, Burns Harbor, Marina Shores at Dune
  Harbor, and Hammond Marina.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Move to safe harbor until hazardous weather passes.

Frequent lightning is occurring with these storms. If caught on the
open water stay below deck if possible, keep away from ungrounded
metal objects.

&&

LAT...LON 4162 8733 4164 8742 4165 8744 4167 8742
      4168 8743 4167 8747 4171 8753 4175 8753
      4177 8757 4191 8697 4179 8697 4179 8696
      4172 8691 4166 8709 4165 8714 4163 8716
      4162 8732 4161 8733
TIME...MOT...LOC 1743Z 313DEG 24KT 4184 8698 4174 8754

HAIL...0.00IN
WIND...40KTS

$$

Kluber