747 WHUS54 KBRO 280921 SMWBRO GMZ170-280945- /O.NEW.KBRO.MA.W.0027.250328T0921Z-250328T0945Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Special Marine Warning National Weather Service Brownsville TX 421 AM CDT Fri Mar 28 2025 The National Weather Service in Brownsville has issued a * Special Marine Warning for... Waters from Port Mansfield TX to the Rio Grande River from 20 to 60 NM... * Until 445 AM CDT. * At 420 AM CDT, a severe thunderstorm capable of producing waterspouts was located 35 nm east of Boca Chica Beach, or 36 nm east of South Padre Island, moving northeast at 15 knots. HAZARD...Waterspouts and wind gusts 34 knots or greater. SOURCE...Radar. IMPACT...Waterspouts can easily overturn boats and create locally hazardous seas. Small craft could be damaged in briefly higher winds and suddenly higher waves. * The severe thunderstorm will remain over mainly open waters. PRECAUTIONARY/PREPAREDNESS ACTIONS... Move to safe harbor until hazardous weather passes. Thunderstorms can produce sudden waterspouts. Waterspouts can easily overturn boats and create locally hazardous seas. Seek safe harbor immediately. && LAT...LON 2597 9650 2602 9660 2620 9650 2609 9631 TIME...MOT...LOC 0920Z 210DEG 17KT 2603 9650 WATERSPOUT...POSSIBLE HAIL...0.00IN WIND...>34KTS $$  864 WHUS54 KBRO 280938 SMWBRO GMZ170-281030- /O.NEW.KBRO.MA.W.0028.250328T0938Z-250328T1030Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Special Marine Warning National Weather Service Brownsville TX 438 AM CDT Fri Mar 28 2025 The National Weather Service in Brownsville has issued a * Special Marine Warning for... Waters from Port Mansfield TX to the Rio Grande River from 20 to 60 NM... * Until 530 AM CDT. * At 438 AM CDT, a severe thunderstorm capable of producing waterspouts was located 37 nm east of Boca Chica Beach, or 37 nm east of South Padre Island, moving northeast at 10 knots. HAZARD...Waterspouts and wind gusts to 40 knots. SOURCE...Radar. IMPACT...Waterspouts can easily overturn boats and create locally hazardous seas. Small craft could be damaged in briefly higher winds and suddenly higher waves. * The severe thunderstorm will remain over mainly open waters. PRECAUTIONARY/PREPAREDNESS ACTIONS... Move to safe harbor until hazardous weather passes. Thunderstorms can produce sudden waterspouts. Waterspouts can easily overturn boats and create locally hazardous seas. Seek safe harbor immediately. && LAT...LON 2599 9645 2609 9654 2629 9640 2616 9620 TIME...MOT...LOC 0938Z 220DEG 10KT 2608 9647 WATERSPOUT...POSSIBLE HAIL...0.00IN WIND...40KTS $$  662 FZUS73 KLOT 280954 MWSLOT Marine Weather Statement National Weather Service Chicago/Romeoville 454 AM CDT Fri Mar 28 2025 LMZ742>745-779-281115- 454 AM CDT Fri Mar 28 2025 ...STRONG THUNDERSTORMS 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 449 AM CDT, thunderstorms capable of gusty winds and small hail were located along a line extending from 9 nm east of Aurora to near Midway Airport to near Gary, moving east at 30 knots. Midway Airport recently measured a 31 kt wind gusts beneath these storms. Locations impacted include... Calumet Harbor, Marina Shores at Dune Harbor, Burnham Harbor, 59th Street Marina, Hammond Marina, Indiana Harbor, Jackson Park Harbor, 31st Street Harbor, and Burns Harbor. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners can expect gusty winds to around 30 knots, locally higher waves, small hail, and lightning strikes. Boaters should seek safe harbor immediately until these storms pass. && LAT...LON 4162 8733 4164 8742 4168 8742 4167 8747 4171 8753 4175 8753 4178 8758 4180 8758 4186 8761 4188 8752 4186 8697 4179 8697 4172 8691 4165 8711 4165 8714 4163 8716 4162 8732 4161 8733 $$ Petr