324 WHUS52 KKEY 171201 SMWKEY GMZ034-055-171230- /O.NEW.KKEY.MA.W.0341.250917T1201Z-250917T1230Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Special Marine Warning National Weather Service Key West FL 801 AM EDT Wed Sep 17 2025 The National Weather Service in Key West has issued a * Special Marine Warning for... Gulf of America including Dry Tortugas and Rebecca Shoal Channel... Straits of Florida from Halfmoon Shoal to 20 nm west of Dry Tortugas out 20 nm... * Until 830 AM EDT. * At 800 AM EDT, a strong thunderstorm was located near Rebecca Shoal Light, moving west at 5 knots. HAZARD...Wind gusts 34 knots or greater. SOURCE...Radar. IMPACT...Expect wind gusts in excess of 34 knots, suddenly higher waves, frequent lightning, and heavy downpours. * The strong thunderstorm will remain over mainly open waters. PRECAUTIONARY/PREPAREDNESS ACTIONS... Prepare for wind gusts in excess of 34 knots, steep and fast-building seas, frequent lightning, and blinding downpours. Stay low or go below, and make sure all on board are wearing life jackets. && LAT...LON 2455 8258 2442 8261 2445 8285 2466 8281 TIME...MOT...LOC 1200Z 100DEG 6KT 2451 8268 HAIL...0.00IN WIND...>34KTS $$ AJP  880 WGUS73 KDMX 171207 FFSDMX Flash Flood Statement National Weather Service Des Moines IA 707 AM CDT Wed Sep 17 2025 IAC077-171217- /O.EXP.KDMX.FF.W.0018.000000T0000Z-250917T1215Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Guthrie IA- 707 AM CDT Wed Sep 17 2025 ...FLASH FLOOD WARNING WILL EXPIRE AT 715 AM CDT THIS MORNING FOR CENTRAL GUTHRIE COUNTY... Flooding is no longer expected to pose a threat. Please continue to heed remaining road closures. && LAT...LON 4163 9474 4173 9474 4179 9474 4181 9474 4175 9451 4167 9428 4166 9428 4163 9428 4160 9428 4160 9424 4152 9424 4157 9449 4161 9461 $$ Ansorge  638 FZUS72 KKEY 171227 MWSKEY Marine Weather Statement National Weather Service Key West FL 827 AM EDT Wed Sep 17 2025 GMZ073-074-171236- /O.CAN.KKEY.MA.W.0340.000000T0000Z-250917T1245Z/ 827 AM EDT Wed Sep 17 2025 ...THE SPECIAL MARINE WARNING IS CANCELLED... The affected areas were... Straits of Florida from Craig Key to Halfmoon Shoal 20 to 60 nm out... The thunderstorm has weakened and no longer poses a significant threat to boaters. && LAT...LON 2392 8083 2371 8098 2381 8130 2411 8111 TIME...MOT...LOC 1225Z 117DEG 10KT 2390 8108 $$ AJP  178 FZUS72 KKEY 171227 RRA MWSKEY Marine Weather Statement National Weather Service Key West FL 827 AM EDT Wed Sep 17 2025 GMZ034-055-171237- /O.EXP.KKEY.MA.W.0341.000000T0000Z-250917T1230Z/ 827 AM EDT Wed Sep 17 2025 ...THE SPECIAL MARINE WARNING WILL EXPIRE AT 830 AM EDT... The affected areas were... Gulf of America including Dry Tortugas and Rebecca Shoal Channel... Straits of Florida from Halfmoon Shoal to 20 nm west of Dry Tortugas out 20 nm... The thunderstorm has weakened and no longer poses a significant threat to boaters. && LAT...LON 2455 8258 2442 8261 2445 8285 2466 8281 TIME...MOT...LOC 1227Z 100DEG 6KT 2452 8273 $$ AJP  252 FZUS72 KMLB 171243 MWSMLB Marine Weather Statement National Weather Service Melbourne FL 843 AM EDT Wed Sep 17 2025 AMZ555-575-171345- 843 AM EDT Wed Sep 17 2025 ...A STRONG THUNDERSTORM OVER THE WATERS... The areas affected include... Sebastian Inlet to Jupiter Inlet 0-20 nm... Sebastian Inlet to Jupiter Inlet 20-60 nm... At 842 AM EDT, Doppler radar indicated a strong thunderstorm, capable of producing winds to around 30 knots. This thunderstorm was located 28 nm east of Hobe Sound Beach, moving southeast at 15 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 this storm passes. Waterspouts are possible with this activity. Remain on the alert in case warnings are issued for waterspout development. Intense 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 2697 7990 2732 7992 2749 7921 2729 7913 2698 7905 $$ Tollefsen