239 WHUS54 KBRO 201243 SMWBRO GMZ130-132-150-170-175-201330- /O.NEW.KBRO.MA.W.0010.260520T1243Z-260520T1330Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Special Marine Warning National Weather Service Brownsville TX 743 AM CDT Wed May 20 2026 The National Weather Service in Brownsville has issued a * Special Marine Warning for... Coastal waters from Port Mansfield TX to the Rio Grande River out 20 NM... Laguna Madre From The Arroyo Colorado To 5 NM North Of Port Mansfield TX... Laguna Madre From the Port Of Brownsville to the Arroyo Colorado... Waters from Baffin Bay to Port Mansfield TX from 20 to 60 NM... Waters from Port Mansfield TX to the Rio Grande River from 20 to 60 NM... * Until 830 AM CDT. * At 743 AM CDT, a severe thunderstorm capable of producing waterspouts was located 19 nm east of South Padre Island, moving south at 30 knots. HAZARD...Waterspouts and wind gusts in excess of 50 knots. SOURCE...Radar. IMPACT...Waterspouts can easily overturn boats and create locally hazardous seas. Boats could suffer significant structural damage in high winds. Small craft could capsize in suddenly higher waves. * The severe thunderstorm will remain over mainly open waters. PRECAUTIONARY/PREPAREDNESS ACTIONS... Move to safe harbor until hazardous weather passes. Move to safe harbor immediately as gusty winds and high waves are expected. Thunderstorms can produce sudden waterspouts. Waterspouts can easily overturn boats and create locally hazardous seas. Seek safe harbor immediately. Frequent lightning is occurring with this storm. If caught on the open water stay below deck if possible, keep away from ungrounded metal objects. && LAT...LON 2597 9715 2600 9715 2600 9726 2605 9718 2608 9720 2611 9730 2625 9733 2627 9731 2627 9734 2630 9735 2635 9733 2636 9738 2641 9738 2637 9742 2642 9739 2642 9744 2674 9640 2619 9600 2596 9674 TIME...MOT...LOC 1243Z 004DEG 28KT 2611 9681 WATERSPOUT...POSSIBLE HAIL...0.00IN WIND...50KTS $$ 64-Katz