073 WHUS53 KDLH 281605 SMWDLH LSZ121-147-148-150-162-281645- /O.NEW.KDLH.MA.W.0001.250428T1605Z-250428T1645Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Special Marine Warning National Weather Service Duluth MN 1105 AM CDT Mon Apr 28 2025 The National Weather Service in Duluth MN has issued a * Special Marine Warning for... Chequamegon Bay-Bayfield to Oak Point WI... Lake Superior west of a line from Saxon Harbor WI to Grand Portage MN beyond 5NM... Oak Point to Saxon Harbor WI... Outer Apostle Islands Beyond 5 NM from Mainland... Sand Island to Bayfield WI... * Until 1145 AM CDT. * At 1104 AM CDT, strong thunderstorms were located along a line extending from 16 nm southeast of Tofte Safe Harbor to 9 nm northeast of Devils Island to near Oak Island to La Pointe, moving northeast at 50 knots. HAZARD...Wind gusts to 40 knots and small hail. SOURCE...Radar. Port Wing marine weather station reported a 44 knot wind gust with these storms at 1040 AM. IMPACT...Small craft could be damaged in briefly higher winds and suddenly higher waves. * Locations impacted include... Rocky Island, Ashland Breakwater Lighthouse, Ironwood Island, Raspberry Island, Basswood Island, Oak Point, Stockton Island, Madeline Island, Oak Island, Devils Island, Manitou Island, Cat Island, South Twin Island, Chequamegon Bay, North Twin Island, Hermit Island, Otter Island, La Pointe, Apostle Islands National Lake Shore, and Red Cliff. PRECAUTIONARY/PREPAREDNESS ACTIONS... Move to safe harbor until hazardous weather passes. && LAT...LON 4657 9097 4667 9094 4670 9089 4676 9092 4687 9080 4690 9080 4694 9086 4710 9074 4743 9069 4778 8970 4666 9044 4660 9044 4658 9061 4664 9071 4656 9092 TIME...MOT...LOC 1604Z 246DEG 51KT 4740 9053 4719 9057 4689 9067 4676 9081 HAIL...<.75IN WIND...40KTS $$ Huyck  352 WHUS53 KMQT 281610 SMWMQT LSZ240>242-263-281715- /O.NEW.KMQT.MA.W.0002.250428T1610Z-250428T1715Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Special Marine Warning National Weather Service Marquette MI 1210 PM EDT Mon Apr 28 2025 The National Weather Service in Marquette has issued a * Special Marine Warning for... Black River To Ontonagon MI... Lake Superior from Saxon Harbor WI to Upper Entrance to Portage Canal MI 5NM off shore to the US/Canadian border including Isle Royale National Park... Ontonagon to Upper Entrance of Portage Canal MI... Saxon Harbor WI to Black River MI... * Until 115 PM EDT. * At 1210 PM EDT, strong thunderstorms were located along a line extending from 12 nm southeast of Horseshoe Bay And Safe Harbor to 13 nm east of Oak Point, moving east at 65 knots. HAZARD...Wind gusts to 40 knots and small hail. SOURCE...Radar. IMPACT...Small craft could be damaged in briefly higher winds and suddenly higher waves. * Locations impacted include... The Western Lake Superior Buoy. PRECAUTIONARY/PREPAREDNESS ACTIONS... Move to safe harbor until hazardous weather passes. Move to safe harbor immediately as gusty winds and high waves are expected. && LAT...LON 4760 8982 4800 8860 4711 8873 4697 8893 4695 8911 4682 8934 4678 8976 4665 8998 4659 9044 TIME...MOT...LOC 1610Z 256DEG 63KT 4767 8977 4666 9044 HAIL...<.75IN WIND...40KTS $$ TAP  028 WGCA72 TJSJ 281616 FFSSJU Flash Flood Statement National Weather Service San Juan PR 1216 PM AST Mon Apr 28 2025 PRC031-061-127-139-281900- /O.CON.TJSJ.FF.W.0011.000000T0000Z-250428T1900Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Carolina PR-Guaynabo PR-San Juan PR-Trujillo Alto PR- 1216 PM AST Mon Apr 28 2025 ...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 3 PM AST THIS AFTERNOON FOR SOUTHEASTERN CAROLINA, GUAYNABO, SOUTHERN SAN JUAN AND TRUJILLO ALTO... At 1216 PM AST, Doppler radar indicated thunderstorms producing heavy rain across the warned area. Between 2 and 4 inches of rain have fallen. Additional rainfall amounts up to 2 inches are possible in the warned area. Flash flooding is ongoing or expected to begin shortly. HAZARD...Life threatening flash flooding. Thunderstorms producing flash flooding. SOURCE...Radar. IMPACT...Life threatening flash flooding of creeks and streams, urban areas, highways, streets and underpasses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Be aware of your surroundings and do not drive on flooded roads. && LAT...LON 1831 6614 1832 6614 1834 6613 1837 6613 1837 6609 1839 6600 1835 6592 1828 6591 1828 6593 1829 6594 1830 6596 1831 6597 1830 6601 1831 6604 1830 6605 1830 6606 1829 6609 1828 6610 1828 6614 FLASH FLOOD...RADAR INDICATED FLASH FLOOD DAMAGE THREAT...CONSIDERABLE $$ GRS  291 FZUS73 KDLH 281623 MWSDLH Marine Weather Statement National Weather Service Duluth MN 1123 AM CDT Mon Apr 28 2025 LSZ121-147-281632- /O.CAN.KDLH.MA.W.0001.000000T0000Z-250428T1645Z/ 1123 AM CDT Mon Apr 28 2025 ...THE SPECIAL MARINE WARNING IS CANCELLED... The affected areas were... Chequamegon Bay-Bayfield to Oak Point WI... Sand Island to Bayfield WI... The thunderstorms have moved out of the warned area and no longer pose a significant threat to boaters. && LAT...LON 4664 9065 4749 9053 4776 8972 4666 9044 4661 9044 4660 9059 TIME...MOT...LOC 1622Z 263DEG 48KT 4749 9029 4724 9033 4688 9040 4668 9041 $$ LSZ148-150-162-281645- /O.CON.KDLH.MA.W.0001.000000T0000Z-250428T1645Z/ 1123 AM CDT Mon Apr 28 2025 ...A SPECIAL MARINE WARNING REMAINS IN EFFECT UNTIL 1145 AM CDT... For the following areas... Lake Superior west of a line from Saxon Harbor WI to Grand Portage MN beyond 5NM... Oak Point to Saxon Harbor WI... Outer Apostle Islands Beyond 5 NM from Mainland... At 1122 AM CDT, strong thunderstorms were located along a line extending from 15 nm south of Grand Marais Harbor to 18 nm northeast of Devils Island to 11 nm east of Oak Island to 13 nm southeast of Madeline Island, moving east at 50 knots. HAZARD...Wind gusts to 40 knots and small hail. SOURCE...Radar indicated. IMPACT...Small craft could be damaged in briefly higher winds and suddenly higher waves. Locations impacted include... Cat Island, Stockton Island, North Twin Island, Michigan Island, Outer Island, and Madeline Island. PRECAUTIONARY/PREPAREDNESS ACTIONS... Move to safe harbor until hazardous weather passes. && LAT...LON 4664 9065 4749 9053 4776 8972 4666 9044 4661 9044 4660 9059 TIME...MOT...LOC 1622Z 263DEG 48KT 4749 9029 4724 9033 4688 9040 4668 9041 HAIL...<.75IN WIND...40KTS $$ Huyck  387 WGCA72 TJSJ 281629 FFSSJU Flash Flood Statement National Weather Service San Juan PR 1229 PM AST Mon Apr 28 2025 PRC031-061-127-139-281900- /O.CON.TJSJ.FF.W.0011.000000T0000Z-250428T1900Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Carolina PR-Guaynabo PR-San Juan PR-Trujillo Alto PR- 1229 PM AST Mon Apr 28 2025 ...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 3 PM AST THIS AFTERNOON FOR SOUTHEASTERN CAROLINA, GUAYNABO, SOUTHERN SAN JUAN AND TRUJILLO ALTO... At 1229 PM AST, Doppler radar indicated thunderstorms producing heavy rain across the warned area. Between 3 and 5 inches of rain have fallen. Additional rainfall amounts up to 2 inches are possible in the warned area. Flash flooding is ongoing or expected to begin shortly. HAZARD...Life threatening flash flooding. Thunderstorms producing flash flooding. SOURCE...Radar. IMPACT...Life threatening flash flooding of creeks and streams, urban areas, highways, streets and underpasses. USGS River sensor indicated that Quebrada Grande in Trujillo Alto has reached minor flood stage. PRECAUTIONARY/PREPAREDNESS ACTIONS... Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Be aware of your surroundings and do not drive on flooded roads. && LAT...LON 1831 6614 1832 6614 1834 6613 1837 6613 1837 6609 1839 6600 1835 6592 1828 6591 1828 6593 1829 6594 1830 6596 1831 6597 1830 6601 1831 6604 1830 6605 1830 6606 1829 6609 1828 6610 1828 6614 FLASH FLOOD...RADAR INDICATED FLASH FLOOD DAMAGE THREAT...CONSIDERABLE $$ GRS  556 FZUS73 KDLH 281635 MWSDLH Marine Weather Statement National Weather Service Duluth MN 1135 AM CDT Mon Apr 28 2025 LSZ148-150-162-281645- /O.CON.KDLH.MA.W.0001.000000T0000Z-250428T1645Z/ 1135 AM CDT Mon Apr 28 2025 ...A SPECIAL MARINE WARNING REMAINS IN EFFECT UNTIL 1145 AM CDT... For the following areas... Lake Superior west of a line from Saxon Harbor WI to Grand Portage MN beyond 5NM... Oak Point to Saxon Harbor WI... Outer Apostle Islands Beyond 5 NM from Mainland... At 1135 AM CDT, strong thunderstorms were located along a line extending from 14 nm southeast of Grand Marais Harbor to 13 nm west of The Western Lake Superior Buoy to 17 nm east of Oak Island to 18 nm east of Madeline Island, moving east at 50 knots. HAZARD...Wind gusts to 40 knots and small hail. SOURCE...Radar indicated. IMPACT...Small craft could be damaged in briefly higher winds and suddenly higher waves. Locations impacted include... Cat Island, Stockton Island, North Twin Island, Michigan Island, Outer Island, and Madeline Island. PRECAUTIONARY/PREPAREDNESS ACTIONS... Move to safe harbor until hazardous weather passes. && LAT...LON 4664 9065 4749 9053 4776 8972 4666 9044 4661 9044 4660 9059 TIME...MOT...LOC 1635Z 250DEG 50KT 4753 9014 4728 9018 4692 9025 4672 9026 HAIL...<.75IN WIND...40KTS $$ Huyck  666 FZUS73 KMQT 281635 MWSMQT Marine Weather Statement National Weather Service Marquette MI 1235 PM EDT Mon Apr 28 2025 LSZ240>242-263-281715- /O.CON.KMQT.MA.W.0002.000000T0000Z-250428T1715Z/ 1235 PM EDT Mon Apr 28 2025 ...A SPECIAL MARINE WARNING REMAINS IN EFFECT UNTIL 115 PM EDT... For the following areas... Black River To Ontonagon MI... Lake Superior from Saxon Harbor WI to Upper Entrance to Portage Canal MI 5NM off shore to the US/Canadian border including Isle Royale National Park... Ontonagon to Upper Entrance of Portage Canal MI... Saxon Harbor WI to Black River MI... At 1235 PM EDT, strong thunderstorms were located along a line extending from 8 nm southeast of Rock of Ages Light to 33 nm south of The Western Lake Superior Buoy, moving east at 65 knots. HAZARD...Wind gusts to 40 knots and small hail. SOURCE...Radar indicated. IMPACT...Small craft could be damaged in briefly higher winds and suddenly higher waves. Locations impacted include... The Western Lake Superior Buoy. PRECAUTIONARY/PREPAREDNESS ACTIONS... Move to safe harbor until hazardous weather passes. Move to safe harbor immediately as gusty winds and high waves are expected. && LAT...LON 4731 9000 4765 8866 4711 8873 4697 8893 4695 8911 4682 8934 4678 8976 4665 8998 4659 9044 TIME...MOT...LOC 1635Z 256DEG 63KT 4777 8915 4676 8984 HAIL...<.75IN WIND...40KTS $$ TAP  272 WGCA52 TJSJ 281638 FFWSJU PRC025-281945- /O.NEW.TJSJ.FF.W.0012.250428T1638Z-250428T1945Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED Flash Flood Warning National Weather Service San Juan PR 1238 PM AST Mon Apr 28 2025 The National Weather Service in San Juan has issued a * Flash Flood Warning for... Caguas in Puerto Rico... * Until 345 PM AST. * At 1238 PM AST, Doppler radar indicated thunderstorms producing heavy rain across the warned area. Additional rainfall amounts of 1 to 2 inches are possible in the warned area. Flash flooding is ongoing or expected to begin shortly. HAZARD...Life threatening flash flooding. Thunderstorms producing flash flooding. SOURCE...Radar. IMPACT...Life threatening flash flooding of creeks and streams, urban areas, highways, streets and underpasses. Flooding has been reported at PR-1 from Caguas to San Juan. PRECAUTIONARY/PREPAREDNESS ACTIONS... Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Be aware of your surroundings and do not drive on flooded roads. && LAT...LON 1829 6603 1828 6601 1823 6601 1822 6600 1819 6600 1817 6602 1813 6603 1812 6604 1811 6605 1814 6607 1815 6607 1817 6610 1818 6610 1821 6612 1823 6609 1825 6607 1830 6606 1830 6605 1831 6604 1831 6602 FLASH FLOOD...RADAR INDICATED FLASH FLOOD DAMAGE THREAT...CONSIDERABLE $$ GRS  233 FZUS73 KMQT 281643 MWSMQT Marine Weather Statement National Weather Service Marquette MI 1243 PM EDT Mon Apr 28 2025 LMZ221-281730- 1243 PM EDT Mon Apr 28 2025 A Marine Weather Statement has been issued for the following areas... Green Bay North of line from Cedar River MI to Rock Island Passage... At 1242 PM EDT, Doppler radar indicated a strong thunderstorm, capable of producing winds to around 30 knots and small hail up to three quarters of an inch in size. This thunderstorm was located 18 nm west of Minneapolis Shoal, moving northeast at 35 knots. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners can expect gusty winds to around 30 knots, locally higher waves, and lightning strikes. Boaters should seek safe harbor immediately until this storm passes. && LAT...LON 4565 8726 4573 8712 4583 8711 4596 8699 4593 8691 4590 8688 4576 8691 4586 8683 4576 8673 4548 8734 $$ TAP  304 FZUS73 KDLH 281643 MWSDLH Marine Weather Statement National Weather Service Duluth MN 1143 AM CDT Mon Apr 28 2025 LSZ148-150-162-281653- /O.EXP.KDLH.MA.W.0001.000000T0000Z-250428T1645Z/ 1143 AM CDT Mon Apr 28 2025 ...THE SPECIAL MARINE WARNING WILL EXPIRE AT 1145 AM CDT... The affected areas were... Lake Superior west of a line from Saxon Harbor WI to Grand Portage MN beyond 5NM... Oak Point to Saxon Harbor WI... Outer Apostle Islands Beyond 5 NM from Mainland... The thunderstorms have moved out of the area and no longer pose a significant threat to boaters. && LAT...LON 4664 9065 4749 9053 4776 8972 4666 9044 4661 9044 4660 9059 TIME...MOT...LOC 1643Z 246DEG 51KT 4755 9004 4730 9008 4694 9015 4674 9016 $$ Huyck  935 WGCA72 TJSJ 281649 FFSSJU Flash Flood Statement National Weather Service San Juan PR 1249 PM AST Mon Apr 28 2025 PRC025-281945- /O.CON.TJSJ.FF.W.0012.000000T0000Z-250428T1945Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Caguas PR- 1249 PM AST Mon Apr 28 2025 ...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 345 PM AST THIS AFTERNOON FOR CAGUAS COUNTY... At 1249 PM AST, Doppler radar indicated thunderstorms producing heavy rain across the warned area. Additional rainfall amounts of 1 to 2 inches are possible in the warned area. Flash flooding is ongoing or expected to begin shortly. HAZARD...Life threatening flash flooding. Thunderstorms producing flash flooding. SOURCE...Radar. IMPACT...Life threatening flash flooding of creeks and streams, urban areas, highways, streets and underpasses. Emergency managers reported Rio Canas out of its banks affecting portions of PR-1 in Caguas. PRECAUTIONARY/PREPAREDNESS ACTIONS... Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Be aware of your surroundings and do not drive on flooded roads. && LAT...LON 1829 6603 1828 6601 1823 6601 1822 6600 1819 6600 1817 6602 1813 6603 1812 6604 1811 6605 1814 6607 1815 6607 1817 6610 1818 6610 1821 6612 1823 6609 1825 6607 1830 6606 1830 6605 1831 6604 1831 6602 FLASH FLOOD...RADAR INDICATED FLASH FLOOD DAMAGE THREAT...CONSIDERABLE $$ GRS  345 FZUS73 KMQT 281652 MWSMQT Marine Weather Statement National Weather Service Marquette MI 1252 PM EDT Mon Apr 28 2025 LSZ240-281702- /O.CAN.KMQT.MA.W.0002.000000T0000Z-250428T1715Z/ 1252 PM EDT Mon Apr 28 2025 ...THE SPECIAL MARINE WARNING IS CANCELLED... The affected areas were... Saxon Harbor WI to Black River MI... The thunderstorms have moved out of the warned area and no longer pose a significant threat to boaters. && LAT...LON 4765 8866 4711 8873 4697 8893 4695 8911 4682 8934 4678 8976 4665 8998 4714 9010 TIME...MOT...LOC 1652Z 256DEG 63KT 4784 8875 4683 8945 $$ LSZ241-242-263-281715- /O.CON.KMQT.MA.W.0002.000000T0000Z-250428T1715Z/ 1252 PM EDT Mon Apr 28 2025 ...A SPECIAL MARINE WARNING REMAINS IN EFFECT UNTIL 115 PM EDT... For the following areas... Black River To Ontonagon MI... Lake Superior from Saxon Harbor WI to Upper Entrance to Portage Canal MI 5NM off shore to the US/Canadian border including Isle Royale National Park... Ontonagon to Upper Entrance of Portage Canal MI... At 1252 PM EDT, strong thunderstorms were located along a line extending from 18 nm southwest of Mott Island Park Headquarters to 33 nm southeast of The Western Lake Superior Buoy, moving east at 65 knots. HAZARD...Wind gusts 34 knots or greater and small hail. SOURCE...Radar indicated. IMPACT...Small craft could be damaged in briefly higher winds and suddenly higher waves. Strong thunderstorms will remain over mainly open waters. PRECAUTIONARY/PREPAREDNESS ACTIONS... Move to safe harbor until hazardous weather passes. && LAT...LON 4765 8866 4711 8873 4697 8893 4695 8911 4682 8934 4678 8976 4665 8998 4714 9010 TIME...MOT...LOC 1652Z 256DEG 63KT 4784 8875 4683 8945 HAIL...<.75IN WIND...>34KTS $$ TAP