252 WHUS71 KBOX 201613 MWWBOX URGENT - MARINE WEATHER MESSAGE National Weather Service Boston/Norton MA 1213 PM EDT Wed May 20 2026 ANZ230-210000- /O.EXA.KBOX.SC.Y.0057.000000T0000Z-260521T0000Z/ Boston Harbor- 1213 PM EDT Wed May 20 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING... * WHAT...West winds 10 to 15 kt with gusts up to 25 kt and waves around 2 feet. * WHERE...Boston Harbor. * WHEN...Until 8 PM EDT this evening. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ ANZ254>256-210515- /O.CON.KBOX.SC.Y.0057.000000T0000Z-260521T0600Z/ Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 NM- Coastal Waters extending out to 25 NM South of Marthas Vineyard and Nantucket- Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 NM South of Block Island- 1213 PM EDT Wed May 20 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 2 AM EDT THURSDAY... * WHAT...West winds 10 to 20 kt with gusts up to 25 kt and seas 4 to 6 feet. * WHERE...In Massachusetts coastal waters, Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 NM and Coastal Waters extending out to 25 NM South of Marthas Vineyard and Nantucket. In Rhode Island coastal waters, Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 NM South of Block Island. * WHEN...Until 2 AM EDT Thursday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ ANZ232>235-237-210000- /O.CON.KBOX.SC.Y.0057.000000T0000Z-260521T0000Z/ Nantucket Sound-Vineyard Sound-Buzzards Bay-Rhode Island Sound- Block Island Sound- 1213 PM EDT Wed May 20 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT THIS EVENING... * WHAT...Southwest winds 10 to 20 kt with gusts up to 25 kt and seas 3 to 5 feet. * WHERE...In Massachusetts coastal waters, Nantucket Sound, Vineyard Sound and Buzzards Bay. In Rhode Island coastal waters, Rhode Island Sound and Block Island Sound. * WHEN...Until 8 PM EDT this evening. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$  210 WHUS76 KEKA 201612 MWWEKA URGENT - MARINE WEATHER MESSAGE National Weather Service Eureka CA 912 AM PDT Wed May 20 2026 PZZ470-210015- /O.CON.KEKA.GL.W.0015.000000T0000Z-260523T0400Z/ Waters from Pt. St. George to Cape Mendocino CA from 10 to 60 nm- 912 AM PDT Wed May 20 2026 ...GALE WARNING REMAINS IN EFFECT UNTIL 9 PM PDT FRIDAY... * WHAT...North winds 25 to 35 kt with gusts up to 45 kt and seas 10 to 13 feet. * WHERE...Waters from Pt. St. George to Cape Mendocino CA from 10 to 60 nm. * WHEN...Until 9 PM PDT Friday. * IMPACTS...Strong winds will cause hazardous seas which could capsize or damage vessels and reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners should alter plans to avoid these hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for severe conditions. && $$ PZZ475-210015- /O.CON.KEKA.GL.W.0015.000000T0000Z-260521T1700Z/ Waters from Cape Mendocino to Pt. Arena CA from 10 to 60 nm- 912 AM PDT Wed May 20 2026 ...GALE WARNING REMAINS IN EFFECT UNTIL 10 AM PDT THURSDAY... * WHAT...North winds 20 to 30 kt with gusts up to 40 kt and seas 11 to 13 feet. * WHERE...Waters from Cape Mendocino to Pt. Arena CA from 10 to 60 nm. * WHEN...Until 10 AM PDT Thursday. * IMPACTS...Strong winds will cause hazardous seas which could capsize or damage vessels and reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners should alter plans to avoid these hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for severe conditions. && $$ PZZ450-210015- /O.CON.KEKA.SC.Y.0049.000000T0000Z-260521T1700Z/ Coastal waters from Pt. St. George to Cape Mendocino CA out 10 nm- 912 AM PDT Wed May 20 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 10 AM PDT THURSDAY... * WHAT...North winds 15 to 25 kt with gusts up to 45 kt and seas 6 to 11 feet. * WHERE...Coastal waters from Pt. St. George to Cape Mendocino CA out 10 nm. * WHEN...Until 10 AM PDT Thursday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ PZZ455-210015- /O.CON.KEKA.SC.Y.0049.000000T0000Z-260521T1700Z/ Coastal waters from Cape Mendocino to Pt. Arena CA out 10 nm- 912 AM PDT Wed May 20 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 10 AM PDT THURSDAY... * WHAT...Northwest winds 15 to 25 kt with gusts up to 40 kt and seas 7 to 12 feet. * WHERE...Coastal waters from Cape Mendocino to Pt. Arena CA out 10 nm. * WHEN...Until 10 AM PDT Thursday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$  510 WHUS76 KSEW 201620 MWWSEW URGENT - MARINE WEATHER MESSAGE National Weather Service Seattle WA 920 AM PDT Wed May 20 2026 PZZ170-173-176-201730- /O.CAN.KSEW.SC.Y.0064.000000T0000Z-260520T1800Z/ Coastal Waters From Cape Flattery To James Island 10 To 60 Nm- Coastal Waters From James Island To Point Grenville 10 To 60 Nm- Coastal Waters From Point Grenville To Cape Shoalwater 10 To 60 Nm- 920 AM PDT Wed May 20 2026 ...SMALL CRAFT ADVISORY IS CANCELLED... Winds have eased over the outer coastal waters, through some seas 8 to 9 ft may persist morning but easing this afternoon. $$ PZZ131-132-210030- /O.CON.KSEW.SC.Y.0065.260521T0000Z-260521T0600Z/ Central U.S. Waters Strait Of Juan De Fuca- East Entrance U.S. Waters Strait Of Juan De Fuca- 920 AM PDT Wed May 20 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 5 PM THIS AFTERNOON TO 11 PM PDT THIS EVENING... * WHAT...West winds 10 to 15 kt with gusts to 25 kt. * WHERE...Central U. S. Waters Strait Of Juan De Fuca and East Entrance U. S. Waters Strait Of Juan De Fuca. * WHEN...From 5 PM this afternoon to 11 PM PDT this evening. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Small Craft Advisory means that wind speeds of 21 to 33 knots and/or seas 10 feet or higher are expected to produce hazardous wave conditions to small craft. Inexperienced mariners, especially those operating smaller vessels should avoid navigating in these conditions. && $$ For more information from the National Weather Service visit http://weather.gov/seattle