420 

WHUS53 KGRR 160216
SMWGRR
LMZ845>847-872-874-876-160415-
/O.NEW.KGRR.MA.W.0018.260416T0216Z-260416T0415Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Special Marine Warning
National Weather Service Grand Rapids MI
1016 PM EDT Wed Apr 15 2026

The National Weather Service in Grand Rapids has issued a

* Special Marine Warning for...
  Nearshore and Open Waters from South Haven to Whitehall MI...

* Until 1215 AM EDT.

* At 1016 PM EDT, strong thunderstorms were located along a line
  extending from 17 nm east of Bayside to 23 nm east of Cudahy to
  near Wind Pt., moving east at 35 knots.

  HAZARD...Wind gusts to 40 knots and small hail.

  SOURCE...Radar.

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

* Locations impacted include...
  Saugatuck Pier Heads, Port Sheldon Harbor, Grand Haven Light,
  Muskegon Light, and Holland Light.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4241 8628 4244 8636 4246 8702 4328 8713
      4328 8637 4308 8625 4292 8621 4269 8621
TIME...MOT...LOC 0216Z 278DEG 36KT 4321 8749 4297 8733 4277 8767

HAIL...<.75IN
WIND...40KTS

$$

NJJ






261 

WHUS53 KLOT 160220
SMWLOT
LMZ740-777-160415-
/O.NEW.KLOT.MA.W.0025.260416T0220Z-260416T0415Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Special Marine Warning
National Weather Service Chicago/Romeoville
920 PM CDT Wed Apr 15 2026

The National Weather Service in Chicago has issued a

* Special Marine Warning for...

  Nearshore Waters from Winthrop Harbor to Wilmette Harbor...
  Open Waters from Winthrop Harbor to Wilmette Harbor out to Mid
Lake...

* Until 1115 PM CDT.

* At 920 PM CDT, strong thunderstorms were located along a line
  extending from 6 nm west of Pleasant Prairie to 14 nm northwest of
  Elgin, moving east 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...
  Winthrop Harbor and Waukegan Harbor.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Move to safe harbor until hazardous weather passes.

&&

LAT...LON 4246 8702 4212 8696 4211 8760 4208 8768
      4212 8774 4227 8783 4248 8780
TIME...MOT...LOC 0220Z 267DEG 27KT 4251 8803 4217 8856

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

$$

Ratzer






743 

WHUS53 KLOT 160248
SMWLOT
LMZ741>745-779-160445-
/O.NEW.KLOT.MA.W.0026.260416T0248Z-260416T0445Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Special Marine Warning
National Weather Service Chicago/Romeoville
948 PM CDT Wed Apr 15 2026

The National Weather Service in Chicago has issued a

* Special Marine Warning for...

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

* Until 1145 PM CDT.

* At 947 PM CDT, strong thunderstorms were located along a line
  extending from 7 nm northeast of Elgin to 8 nm west of Aurora,
  moving east at 40 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...
  Harrison-Dever Crib, Wilmette Harbor, 31st Street Harbor, Monroe
  Harbor, Burns Harbor, Calumet Harbor, Indiana Harbor, Montrose
  Harbor, Burnham Harbor, Hammond Marina, Jackson Park Harbor, and
  Belmont Harbor.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Move to safe harbor until hazardous weather passes.

&&

LAT...LON 4162 8733 4164 8743 4168 8743 4167 8744
      4169 8750 4183 8760 4189 8762 4189 8760
      4190 8762 4208 8768 4211 8760 4212 8696
      4179 8697 4179 8696 4172 8691 4163 8716
      4162 8732 4161 8732
TIME...MOT...LOC 0247Z 273DEG 39KT 4213 8819 4175 8849

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

$$

Ratzer