610 FZUS73 KGRR 160406 MWSGRR Marine Weather Statement National Weather Service Grand Rapids MI 1206 AM EDT Thu Apr 16 2026 LMZ845>847-872-874-876-160415- /O.EXP.KGRR.MA.W.0018.000000T0000Z-260416T0415Z/ 1206 AM EDT Thu Apr 16 2026 ...THE SPECIAL MARINE WARNING WILL EXPIRE AT 1215 AM EDT... The affected areas were... Nearshore and Open Waters from South Haven to Whitehall MI... The thunderstorms have weakened and are producing winds to around 30 knots. The Special Marine Warning will expire. LAT...LON 4241 8628 4244 8636 4246 8702 4283 8707 4328 8637 4308 8625 4292 8621 4269 8621 TIME...MOT...LOC 0405Z 270DEG 36KT 4314 8580 4272 8616 $$ CAS  103 FZUS73 KLOT 160408 MWSLOT Marine Weather Statement National Weather Service Chicago/Romeoville 1108 PM CDT Wed Apr 15 2026 LMZ777-160418- /O.EXP.KLOT.MA.W.0025.000000T0000Z-260416T0415Z/ 1108 PM CDT Wed Apr 15 2026 ...THE SPECIAL MARINE WARNING WILL EXPIRE AT 1115 PM CDT... The affected areas were... Open Waters from Winthrop Harbor to Wilmette Harbor out to Mid Lake... The gust front associated with these thunderstorms has moved out of the area and no longer pose a significant wind threat to boaters. && LAT...LON 4246 8702 4212 8696 4211 8760 4247 8738 TIME...MOT...LOC 0408Z 266DEG 27KT 4246 8682 4213 8715 $$ Ratzer  784 FZUS73 KIWX 160415 MWSIWX Marine Weather Statement National Weather Service Northern Indiana 1215 AM EDT Thu Apr 16 2026 LMZ043-046-080-160545- 1215 AM EDT Thu Apr 16 2026 A Marine Weather Statement has been issued for the following areas... Lake Michigan Michigan City IN to St. Joseph MI 5 NM offshore to mid-line of lake.... Michigan City IN to New Buffalo MI... New Buffalo MI to St Joseph MI... At 1214 AM EDT, Doppler radar indicated strong thunderstorms, capable of producing winds to around 30 knots. These thunderstorms were located along a line extending from 19 nm west of Saugatuck Pier Heads to 16 nm west of St. Joseph Light to near Jackson Park Harbor, moving east at 30 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 these storms pass. && LAT...LON 4179 8696 4179 8697 4212 8696 4213 8657 4211 8649 4194 8658 4189 8662 4180 8675 4179 8676 4172 8691 $$ MARSILI  215 FZUS73 KLOT 160422 MWSLOT Marine Weather Statement National Weather Service Chicago/Romeoville 1122 PM CDT Wed Apr 15 2026 LMZ741>745-779-160445- /O.CON.KLOT.MA.W.0026.000000T0000Z-260416T0445Z/ 1122 PM CDT Wed Apr 15 2026 ...A SPECIAL MARINE WARNING REMAINS IN EFFECT UNTIL 1145 PM CDT... For the following areas... Nearshore Waters from Wilmette Harbor to Calumet Harbor... Nearshore Waters from Calumet Harbor to Michigan City... Open Waters from Wilmette Harbor to Michigan City out to Mid Lake... At 1121 PM CDT, thunderstorms and an associated gust front were located along a line extending from 19 nm northwest of New Buffalo to 6 nm northwest of Marina Shores at Dune Harbor, moving east at 35 knots. HAZARD...Wind gusts to 40 knots. SOURCE...Radar indicated. IMPACT...Small craft could be damaged in briefly higher winds and suddenly higher waves. Locations impacted include... Harrison-Dever Crib, Wilmette Harbor, 31st Street Harbor, Monroe Harbor, Burns Harbor, Calumet Harbor, Indiana Harbor, Montrose Harbor, Burnham Harbor, Hammond Marina, Jackson Park Harbor, and Belmont Harbor. PRECAUTIONARY/PREPAREDNESS ACTIONS... Move to safe harbor until hazardous weather passes. && LAT...LON 4162 8733 4164 8743 4168 8743 4167 8744 4169 8750 4183 8760 4189 8762 4189 8760 4190 8762 4208 8768 4211 8760 4212 8696 4179 8697 4179 8696 4172 8691 4163 8716 4162 8732 4161 8732 TIME...MOT...LOC 0421Z 272DEG 34KT 4208 8693 4170 8728 HAIL...0.00IN WIND...40KTS $$ Ratzer  039 FZUS73 KLOT 160444 MWSLOT Marine Weather Statement National Weather Service Chicago/Romeoville 1144 PM CDT Wed Apr 15 2026 LMZ741>745-779-160453- /O.EXP.KLOT.MA.W.0026.000000T0000Z-260416T0445Z/ 1144 PM CDT Wed Apr 15 2026 ...THE SPECIAL MARINE WARNING WILL EXPIRE AT 1145 PM CDT... The affected areas were... 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... The gust front has moved out of the area and no longer poses a significant threat to boaters. As a result, the Special Marine Warning will be allowed to expire at the scheduled expiration time. && 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 0443Z 273DEG 39KT 4207 8662 4169 8697 $$ Borchardt  175 FZUS73 KIWX 160446 MWSIWX Marine Weather Statement National Weather Service Northern Indiana 1246 AM EDT Thu Apr 16 2026 LMZ043-046-080-160545- 1246 AM EDT Thu Apr 16 2026 ...SHOWERS APPROACHING THE WATERS... The areas affected include... Lake Michigan Michigan City IN to St. Joseph MI 5 NM offshore to mid-line of lake.... Michigan City IN to New Buffalo MI... New Buffalo MI to St Joseph MI... At 1246 AM EDT, Doppler radar indicated showers, capable of producing winds to around 30 knots. These showers were located along a line extending from 8 nm west of St. Joseph Light to 12 nm north of Burns Harbor, moving east at 50 knots. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners can expect gusty winds to around 30 knots, locally higher waves, and lightning strikes. Boaters should seek safe harbor immediately until these storms pass. && LAT...LON 4179 8696 4179 8697 4212 8696 4213 8657 4211 8649 4194 8658 4189 8662 4180 8675 4179 8676 4172 8691 $$ DN