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Home Return to list Hazardous Seas Warning 0018 Issued by the Eureka Forecast Office
Action: New Issued At: 2026-08-02 22:43:05 322 WHUS76 KEKA 030342 MWWEKA URGENT - MARINE WEATHER MESSAGE National Weather Service Eureka CA 842 PM PDT Sun Aug 2 2026 PZZ455-031145- /O.EXP.KEKA.GL.W.0026.000000T0000Z-260803T0400Z/ /O.NEW.KEKA.SE.W.0018.260803T0400Z-260803T1600Z/ Coastal waters from Cape Mendocino to Pt. Arena CA out 10 nm- 842 PM PDT Sun Aug 2 2026 ...HAZARDOUS SEAS WARNING IN EFFECT UNTIL 9 AM PDT MONDAY... * WHAT...Very steep and hazardous seas 7 to 12 feet and northwest winds 15 to 25 kt. Local gusts up to 40 kt expected near Cape Mendocino. * WHERE...Coastal waters from Cape Mendocino to Pt. Arena CA out 10 nm. * WHEN...Until 9 AM PDT Monday. * IMPACTS...Very steep and hazardous seas could capsize or cause damage to vessels. PRECAUTIONARY/PREPAREDNESS ACTIONS... Recreational boaters should remain in port. Commercial vessels should prepare for rough seas and consider remaining in port until hazardous seas subside. && $$ PZZ450-031000- /O.CON.KEKA.GL.W.0026.000000T0000Z-260803T1000Z/ Coastal waters from Pt. St. George to Cape Mendocino CA out 10 nm- 842 PM PDT Sun Aug 2 2026 ...GALE WARNING REMAINS IN EFFECT UNTIL 3 AM PDT MONDAY... * WHAT...North winds 15 to 25 kt with gusts up to 40 kt and seas 9 to 13 feet. * WHERE...Coastal waters from Pt. St. George to Cape Mendocino CA out 10 nm. * WHEN...Until 3 AM PDT Monday. * IMPACTS...Strong winds will cause hazardous seas which could capsize or damage vessels and reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners should alter plans to avoid these hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for severe conditions. && $$ PZZ470-031145- /O.CON.KEKA.GL.W.0026.000000T0000Z-260804T1000Z/ Waters from Pt. St. George to Cape Mendocino CA from 10 to 60 nm- 842 PM PDT Sun Aug 2 2026 ...GALE WARNING REMAINS IN EFFECT UNTIL 3 AM PDT TUESDAY... * WHAT...North winds 25 to 35 kt with gusts up to 45 kt and seas 13 to 15 feet. * WHERE...Waters from Pt. St. George to Cape Mendocino CA from 10 to 60 nm. * WHEN...Until 3 AM PDT Tuesday. * 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. && $$ PZZ475-031145- /O.CON.KEKA.GL.W.0026.000000T0000Z-260804T1000Z/ Waters from Cape Mendocino to Pt. Arena CA from 10 to 60 nm- 842 PM PDT Sun Aug 2 2026 ...GALE WARNING REMAINS IN EFFECT UNTIL 3 AM PDT TUESDAY... * WHAT...North winds 25 to 35 kt with gusts up to 40 kt and seas 12 to 16 feet. * WHERE...Waters from Cape Mendocino to Pt. Arena CA from 10 to 60 nm. * WHEN...Until 3 AM PDT Tuesday. * IMPACTS...Strong winds will cause hazardous seas which could capsize or damage vessels and reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners should alter plans to avoid these hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for severe conditions. && $$ Action: Continued Issued At: 2026-08-03 04:45:35 553 WHUS76 KEKA 030945 MWWEKA URGENT - MARINE WEATHER MESSAGE National Weather Service Eureka CA 245 AM PDT Mon Aug 3 2026 PZZ450-031600- /O.EXP.KEKA.GL.W.0026.000000T0000Z-260803T1000Z/ /O.EXB.KEKA.SE.W.0018.260803T1000Z-260803T1600Z/ Coastal waters from Pt. St. George to Cape Mendocino CA out 10 nm- 245 AM PDT Mon Aug 3 2026 ...HAZARDOUS SEAS WARNING IN EFFECT UNTIL 9 AM PDT THIS MORNING... ...GALE WARNING WILL EXPIRE AT 3 AM PDT EARLY THIS MORNING... * WHAT...Very steep and hazardous seas 7 to 12 feet and north winds 15 to 25 kt with gusts up to 35 kt expected. * WHERE...Coastal waters from Pt. St. George to Cape Mendocino CA out 10 nm. * WHEN...Until 9 AM PDT this morning. * IMPACTS...Very steep and hazardous seas could capsize or cause damage to vessels. PRECAUTIONARY/PREPAREDNESS ACTIONS... Recreational boaters should remain in port. Commercial vessels should prepare for rough seas and consider remaining in port until hazardous seas subside. && $$ PZZ475-031745- /O.EXT.KEKA.GL.W.0026.000000T0000Z-260804T0400Z/ Waters from Cape Mendocino to Pt. Arena CA from 10 to 60 nm- 245 AM PDT Mon Aug 3 2026 ...GALE WARNING NOW IN EFFECT UNTIL 9 PM PDT THIS EVENING... * WHAT...North winds 25 to 35 kt with gusts up to 40 kt and seas 9 to 14 feet. * WHERE...Waters from Cape Mendocino to Pt. Arena CA from 10 to 60 nm. * WHEN...Until 9 PM PDT this evening. * IMPACTS...Strong winds will cause hazardous seas which could capsize or damage vessels and reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners should alter plans to avoid these hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for severe conditions. && $$ PZZ470-031745- /O.CON.KEKA.GL.W.0026.000000T0000Z-260804T1000Z/ Waters from Pt. St. George to Cape Mendocino CA from 10 to 60 nm- 245 AM PDT Mon Aug 3 2026 ...GALE WARNING REMAINS IN EFFECT UNTIL 3 AM PDT TUESDAY... * WHAT...North winds 25 to 35 kt with gusts up to 45 kt and seas 11 to 14 feet. * WHERE...Waters from Pt. St. George to Cape Mendocino CA from 10 to 60 nm. * WHEN...Until 3 AM PDT Tuesday. * 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. && $$ PZZ455-031600- /O.CON.KEKA.SE.W.0018.000000T0000Z-260803T1600Z/ Coastal waters from Cape Mendocino to Pt. Arena CA out 10 nm- 245 AM PDT Mon Aug 3 2026 ...HAZARDOUS SEAS WARNING REMAINS IN EFFECT UNTIL 9 AM PDT THIS MORNING... * WHAT...Very steep and hazardous seas 6 to 11 feet and northwest winds 15 to 25 kt with gusts up to 35 kt. * WHERE...Coastal waters from Cape Mendocino to Pt. Arena CA out 10 nm. * WHEN...Until 9 AM PDT this morning. * IMPACTS...Very steep and hazardous seas could capsize or cause damage to vessels. PRECAUTIONARY/PREPAREDNESS ACTIONS... Recreational boaters should remain in port. Commercial vessels should prepare for rough seas and consider remaining in port until hazardous seas subside. && $$ Action: Time and Area Extended Issued At: 2026-08-03 04:45:35 553 WHUS76 KEKA 030945 MWWEKA URGENT - MARINE WEATHER MESSAGE National Weather Service Eureka CA 245 AM PDT Mon Aug 3 2026 PZZ450-031600- /O.EXP.KEKA.GL.W.0026.000000T0000Z-260803T1000Z/ /O.EXB.KEKA.SE.W.0018.260803T1000Z-260803T1600Z/ Coastal waters from Pt. St. George to Cape Mendocino CA out 10 nm- 245 AM PDT Mon Aug 3 2026 ...HAZARDOUS SEAS WARNING IN EFFECT UNTIL 9 AM PDT THIS MORNING... ...GALE WARNING WILL EXPIRE AT 3 AM PDT EARLY THIS MORNING... * WHAT...Very steep and hazardous seas 7 to 12 feet and north winds 15 to 25 kt with gusts up to 35 kt expected. * WHERE...Coastal waters from Pt. St. George to Cape Mendocino CA out 10 nm. * WHEN...Until 9 AM PDT this morning. * IMPACTS...Very steep and hazardous seas could capsize or cause damage to vessels. PRECAUTIONARY/PREPAREDNESS ACTIONS... Recreational boaters should remain in port. Commercial vessels should prepare for rough seas and consider remaining in port until hazardous seas subside. && $$ PZZ475-031745- /O.EXT.KEKA.GL.W.0026.000000T0000Z-260804T0400Z/ Waters from Cape Mendocino to Pt. Arena CA from 10 to 60 nm- 245 AM PDT Mon Aug 3 2026 ...GALE WARNING NOW IN EFFECT UNTIL 9 PM PDT THIS EVENING... * WHAT...North winds 25 to 35 kt with gusts up to 40 kt and seas 9 to 14 feet. * WHERE...Waters from Cape Mendocino to Pt. Arena CA from 10 to 60 nm. * WHEN...Until 9 PM PDT this evening. * IMPACTS...Strong winds will cause hazardous seas which could capsize or damage vessels and reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners should alter plans to avoid these hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for severe conditions. && $$ PZZ470-031745- /O.CON.KEKA.GL.W.0026.000000T0000Z-260804T1000Z/ Waters from Pt. St. George to Cape Mendocino CA from 10 to 60 nm- 245 AM PDT Mon Aug 3 2026 ...GALE WARNING REMAINS IN EFFECT UNTIL 3 AM PDT TUESDAY... * WHAT...North winds 25 to 35 kt with gusts up to 45 kt and seas 11 to 14 feet. * WHERE...Waters from Pt. St. George to Cape Mendocino CA from 10 to 60 nm. * WHEN...Until 3 AM PDT Tuesday. * 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. && $$ PZZ455-031600- /O.CON.KEKA.SE.W.0018.000000T0000Z-260803T1600Z/ Coastal waters from Cape Mendocino to Pt. Arena CA out 10 nm- 245 AM PDT Mon Aug 3 2026 ...HAZARDOUS SEAS WARNING REMAINS IN EFFECT UNTIL 9 AM PDT THIS MORNING... * WHAT...Very steep and hazardous seas 6 to 11 feet and northwest winds 15 to 25 kt with gusts up to 35 kt. * WHERE...Coastal waters from Cape Mendocino to Pt. Arena CA out 10 nm. * WHEN...Until 9 AM PDT this morning. * IMPACTS...Very steep and hazardous seas could capsize or cause damage to vessels. PRECAUTIONARY/PREPAREDNESS ACTIONS... Recreational boaters should remain in port. Commercial vessels should prepare for rough seas and consider remaining in port until hazardous seas subside. && $$ Action: Expired Issued At: 2026-08-03 11:29:17 514 WHUS76 KEKA 031628 MWWEKA URGENT - MARINE WEATHER MESSAGE National Weather Service Eureka CA 928 AM PDT Mon Aug 3 2026 PZZ450-040030- /O.EXP.KEKA.SE.W.0018.000000T0000Z-260803T1600Z/ /O.NEW.KEKA.SE.W.0019.260803T1628Z-260804T0400Z/ Coastal waters from Pt. St. George to Cape Mendocino CA out 10 nm- 928 AM PDT Mon Aug 3 2026 ...HAZARDOUS SEAS WARNING IN EFFECT UNTIL 9 PM PDT THIS EVENING... * WHAT...Very steep and hazardous seas 7 to 12 feet and north winds 15 to 25 kt with localized gusts to 40 kt. * WHERE...Coastal waters from Pt. St. George to Cape Mendocino CA out 10 nm. * WHEN...Until 9 PM PDT this evening. * IMPACTS...Very steep and hazardous seas could capsize or cause damage to vessels. PRECAUTIONARY/PREPAREDNESS ACTIONS... Recreational boaters should remain in port. Commercial vessels should prepare for rough seas and consider remaining in port until hazardous seas subside. && $$ PZZ455-040030- /O.EXP.KEKA.SE.W.0018.000000T0000Z-260803T1600Z/ /O.NEW.KEKA.SC.Y.0073.260803T1628Z-260804T0400Z/ Coastal waters from Cape Mendocino to Pt. Arena CA out 10 nm- 928 AM PDT Mon Aug 3 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 9 PM PDT THIS EVENING... ...HAZARDOUS SEAS WARNING HAS EXPIRED... * WHAT...Northwest winds 10 to 20 kt with localized gusts to 35 kt and seas 6 to 9 feet. * WHERE...Coastal waters from Cape Mendocino to Pt. Arena CA out 10 nm. * WHEN...Until 9 PM PDT this evening. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ PZZ470-040030- /O.CON.KEKA.GL.W.0026.000000T0000Z-260804T1000Z/ Waters from Pt. St. George to Cape Mendocino CA from 10 to 60 nm- 928 AM PDT Mon Aug 3 2026 ...GALE WARNING REMAINS IN EFFECT UNTIL 3 AM PDT TUESDAY... * WHAT...North winds 25 to 35 kt with gusts to 45 kt and seas 11 to 14 feet. * WHERE...Waters from Pt. St. George to Cape Mendocino CA from 10 to 60 nm. * WHEN...Until 3 AM PDT Tuesday. * 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. && $$ PZZ475-040030- /O.CON.KEKA.GL.W.0026.000000T0000Z-260804T0400Z/ Waters from Cape Mendocino to Pt. Arena CA from 10 to 60 nm- 928 AM PDT Mon Aug 3 2026 ...GALE WARNING REMAINS IN EFFECT UNTIL 9 PM PDT THIS EVENING... * WHAT...North winds 20 to 30 kt with gusts to 40 kt and seas 9 to 12 feet. * WHERE...Waters from Cape Mendocino to Pt. Arena CA from 10 to 60 nm. * WHEN...Until 9 PM PDT this evening. * IMPACTS...Strong winds will cause hazardous seas which could capsize or damage vessels and reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners should alter plans to avoid these hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for severe conditions. && $$ Action: Expired Issued At: 2026-08-03 11:29:17 514 WHUS76 KEKA 031628 MWWEKA URGENT - MARINE WEATHER MESSAGE National Weather Service Eureka CA 928 AM PDT Mon Aug 3 2026 PZZ450-040030- /O.EXP.KEKA.SE.W.0018.000000T0000Z-260803T1600Z/ /O.NEW.KEKA.SE.W.0019.260803T1628Z-260804T0400Z/ Coastal waters from Pt. St. George to Cape Mendocino CA out 10 nm- 928 AM PDT Mon Aug 3 2026 ...HAZARDOUS SEAS WARNING IN EFFECT UNTIL 9 PM PDT THIS EVENING... * WHAT...Very steep and hazardous seas 7 to 12 feet and north winds 15 to 25 kt with localized gusts to 40 kt. * WHERE...Coastal waters from Pt. St. George to Cape Mendocino CA out 10 nm. * WHEN...Until 9 PM PDT this evening. * IMPACTS...Very steep and hazardous seas could capsize or cause damage to vessels. PRECAUTIONARY/PREPAREDNESS ACTIONS... Recreational boaters should remain in port. Commercial vessels should prepare for rough seas and consider remaining in port until hazardous seas subside. && $$ PZZ455-040030- /O.EXP.KEKA.SE.W.0018.000000T0000Z-260803T1600Z/ /O.NEW.KEKA.SC.Y.0073.260803T1628Z-260804T0400Z/ Coastal waters from Cape Mendocino to Pt. Arena CA out 10 nm- 928 AM PDT Mon Aug 3 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 9 PM PDT THIS EVENING... ...HAZARDOUS SEAS WARNING HAS EXPIRED... * WHAT...Northwest winds 10 to 20 kt with localized gusts to 35 kt and seas 6 to 9 feet. * WHERE...Coastal waters from Cape Mendocino to Pt. Arena CA out 10 nm. * WHEN...Until 9 PM PDT this evening. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ PZZ470-040030- /O.CON.KEKA.GL.W.0026.000000T0000Z-260804T1000Z/ Waters from Pt. St. George to Cape Mendocino CA from 10 to 60 nm- 928 AM PDT Mon Aug 3 2026 ...GALE WARNING REMAINS IN EFFECT UNTIL 3 AM PDT TUESDAY... * WHAT...North winds 25 to 35 kt with gusts to 45 kt and seas 11 to 14 feet. * WHERE...Waters from Pt. St. George to Cape Mendocino CA from 10 to 60 nm. * WHEN...Until 3 AM PDT Tuesday. * 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. && $$ PZZ475-040030- /O.CON.KEKA.GL.W.0026.000000T0000Z-260804T0400Z/ Waters from Cape Mendocino to Pt. Arena CA from 10 to 60 nm- 928 AM PDT Mon Aug 3 2026 ...GALE WARNING REMAINS IN EFFECT UNTIL 9 PM PDT THIS EVENING... * WHAT...North winds 20 to 30 kt with gusts to 40 kt and seas 9 to 12 feet. * WHERE...Waters from Cape Mendocino to Pt. Arena CA from 10 to 60 nm. * WHEN...Until 9 PM PDT this evening. * IMPACTS...Strong winds will cause hazardous seas which could capsize or damage vessels and reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners should alter plans to avoid these hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for severe conditions. && $$ | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||