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Home Return to list Hazardous Seas Warning 0020 Issued by the Eureka Forecast Office
Action: New Issued At: 2026-08-03 22:50:36 754 WHUS76 KEKA 040350 MWWEKA URGENT - MARINE WEATHER MESSAGE National Weather Service Eureka CA 850 PM PDT Mon Aug 3 2026 PZZ475-041200- /O.EXP.KEKA.GL.W.0026.000000T0000Z-260804T0400Z/ /O.NEW.KEKA.SE.W.0020.260804T0400Z-260804T1600Z/ Waters from Cape Mendocino to Pt. Arena CA from 10 to 60 nm- 850 PM PDT Mon Aug 3 2026 ...HAZARDOUS SEAS WARNING IN EFFECT UNTIL 9 AM PDT TUESDAY... * WHAT...Very steep and hazardous seas 9 to 12 feet and north winds 15 to 25 kt with gusts up to 30 kt expected. * WHERE...Waters from Cape Mendocino to Pt. Arena CA from 10 to 60 nm. * WHEN...Until 9 AM PDT Tuesday. * 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. && $$ PZZ450-041200- /O.EXP.KEKA.SE.W.0019.000000T0000Z-260804T0400Z/ /O.EXB.KEKA.SC.Y.0073.260804T0400Z-260804T1600Z/ Coastal waters from Pt. St. George to Cape Mendocino CA out 10 nm- 850 PM PDT Mon Aug 3 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 9 AM PDT TUESDAY... * WHAT...Seas 7 to 9 feet expected. * WHERE...Coastal waters from Pt. St. George to Cape Mendocino CA out 10 nm. * WHEN...Until 9 AM PDT Tuesday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ PZZ470-041000- /O.CON.KEKA.GL.W.0026.000000T0000Z-260804T1000Z/ Waters from Pt. St. George to Cape Mendocino CA from 10 to 60 nm- 850 PM PDT Mon Aug 3 2026 ...GALE WARNING REMAINS IN EFFECT UNTIL 3 AM PDT TUESDAY... * WHAT...North winds 20 to 30 kt with gusts up to 40 kt and seas 11 to 13 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. && $$ PZZ455-041200- /O.EXT.KEKA.SC.Y.0073.000000T0000Z-260804T1600Z/ Coastal waters from Cape Mendocino to Pt. Arena CA out 10 nm- 850 PM PDT Mon Aug 3 2026 ...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 9 AM PDT TUESDAY... * WHAT...Northwest winds 5 to 15 kt with gusts up to 25 kt and seas 6 to 8 feet. * WHERE...Coastal waters from Cape Mendocino to Pt. Arena CA out 10 nm. * WHEN...Until 9 AM PDT Tuesday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ Action: Continued Issued At: 2026-08-04 04:48:21 480 WHUS76 KEKA 040947 MWWEKA URGENT - MARINE WEATHER MESSAGE National Weather Service Eureka CA 247 AM PDT Tue Aug 4 2026 PZZ470-041800- /O.EXP.KEKA.GL.W.0026.000000T0000Z-260804T1000Z/ /O.EXB.KEKA.SE.W.0020.260804T1000Z-260804T2200Z/ Waters from Pt. St. George to Cape Mendocino CA from 10 to 60 nm- 247 AM PDT Tue Aug 4 2026 ...HAZARDOUS SEAS WARNING IN EFFECT UNTIL 3 PM PDT THIS AFTERNOON... * WHAT...Very steep and hazardous seas 9 to 11 feet and north winds 15 to 25 kt with gusts up to 30 kt expected. * WHERE...Waters from Pt. St. George to Cape Mendocino CA from 10 to 60 nm. * WHEN...Until 3 PM PDT this afternoon. * 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. && $$ PZZ475-041600- /O.CON.KEKA.SE.W.0020.000000T0000Z-260804T1600Z/ Waters from Cape Mendocino to Pt. Arena CA from 10 to 60 nm- 247 AM PDT Tue Aug 4 2026 ...HAZARDOUS SEAS WARNING REMAINS IN EFFECT UNTIL 9 AM PDT THIS MORNING... * WHAT...Very steep and hazardous seas 9 to 14 feet and north winds 15 to 25 kt with gusts up to 30 kt. * WHERE...Waters from Cape Mendocino to Pt. Arena CA from 10 to 60 nm. * WHEN...Until 9 AM PDT this morning. * IMPACTS...Very steep and hazardous seas could capsize or cause damage to vessels. PRECAUTIONARY/PREPAREDNESS ACTIONS... Recreational boaters should remain in port. Commercial vessels should prepare for rough seas and consider remaining in port until hazardous seas subside. && $$ PZZ450-041600- /O.CON.KEKA.SC.Y.0073.000000T0000Z-260804T1600Z/ Coastal waters from Pt. St. George to Cape Mendocino CA out 10 nm- 247 AM PDT Tue Aug 4 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 9 AM PDT THIS MORNING... * WHAT...Seas 6 to 11 feet. * WHERE...Coastal waters from Pt. St. George to Cape Mendocino CA out 10 nm. * WHEN...Until 9 AM PDT this morning. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ PZZ455-041600- /O.CON.KEKA.SC.Y.0073.000000T0000Z-260804T1600Z/ Coastal waters from Cape Mendocino to Pt. Arena CA out 10 nm- 247 AM PDT Tue Aug 4 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 9 AM PDT THIS MORNING... * WHAT...Northwest winds 5 to 15 kt with gusts up to 25 kt and seas 7 to 10 feet. * WHERE...Coastal waters from Cape Mendocino to Pt. Arena CA out 10 nm. * WHEN...Until 9 AM PDT this morning. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ Action: Time and Area Extended Issued At: 2026-08-04 04:48:21 480 WHUS76 KEKA 040947 MWWEKA URGENT - MARINE WEATHER MESSAGE National Weather Service Eureka CA 247 AM PDT Tue Aug 4 2026 PZZ470-041800- /O.EXP.KEKA.GL.W.0026.000000T0000Z-260804T1000Z/ /O.EXB.KEKA.SE.W.0020.260804T1000Z-260804T2200Z/ Waters from Pt. St. George to Cape Mendocino CA from 10 to 60 nm- 247 AM PDT Tue Aug 4 2026 ...HAZARDOUS SEAS WARNING IN EFFECT UNTIL 3 PM PDT THIS AFTERNOON... * WHAT...Very steep and hazardous seas 9 to 11 feet and north winds 15 to 25 kt with gusts up to 30 kt expected. * WHERE...Waters from Pt. St. George to Cape Mendocino CA from 10 to 60 nm. * WHEN...Until 3 PM PDT this afternoon. * 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. && $$ PZZ475-041600- /O.CON.KEKA.SE.W.0020.000000T0000Z-260804T1600Z/ Waters from Cape Mendocino to Pt. Arena CA from 10 to 60 nm- 247 AM PDT Tue Aug 4 2026 ...HAZARDOUS SEAS WARNING REMAINS IN EFFECT UNTIL 9 AM PDT THIS MORNING... * WHAT...Very steep and hazardous seas 9 to 14 feet and north winds 15 to 25 kt with gusts up to 30 kt. * WHERE...Waters from Cape Mendocino to Pt. Arena CA from 10 to 60 nm. * WHEN...Until 9 AM PDT this morning. * IMPACTS...Very steep and hazardous seas could capsize or cause damage to vessels. PRECAUTIONARY/PREPAREDNESS ACTIONS... Recreational boaters should remain in port. Commercial vessels should prepare for rough seas and consider remaining in port until hazardous seas subside. && $$ PZZ450-041600- /O.CON.KEKA.SC.Y.0073.000000T0000Z-260804T1600Z/ Coastal waters from Pt. St. George to Cape Mendocino CA out 10 nm- 247 AM PDT Tue Aug 4 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 9 AM PDT THIS MORNING... * WHAT...Seas 6 to 11 feet. * WHERE...Coastal waters from Pt. St. George to Cape Mendocino CA out 10 nm. * WHEN...Until 9 AM PDT this morning. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ PZZ455-041600- /O.CON.KEKA.SC.Y.0073.000000T0000Z-260804T1600Z/ Coastal waters from Cape Mendocino to Pt. Arena CA out 10 nm- 247 AM PDT Tue Aug 4 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 9 AM PDT THIS MORNING... * WHAT...Northwest winds 5 to 15 kt with gusts up to 25 kt and seas 7 to 10 feet. * WHERE...Coastal waters from Cape Mendocino to Pt. Arena CA out 10 nm. * WHEN...Until 9 AM PDT this morning. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ Action: Cancelled Issued At: 2026-08-04 08:32:44 986 WHUS76 KEKA 041332 MWWEKA URGENT - MARINE WEATHER MESSAGE National Weather Service Eureka CA 632 AM PDT Tue Aug 4 2026 PZZ475-042145- /O.CAN.KEKA.SE.W.0020.000000T0000Z-260804T1600Z/ /O.EXB.KEKA.SC.Y.0073.000000T0000Z-260805T0400Z/ Waters from Cape Mendocino to Pt. Arena CA from 10 to 60 nm- 632 AM PDT Tue Aug 4 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 9 PM PDT THIS EVENING... ...HAZARDOUS SEAS WARNING IS CANCELLED... * WHAT...North winds 10 to 20 kt with gusts up to 30 kt and seas 6 to 11 feet. * WHERE...Waters from Cape Mendocino to Pt. Arena CA from 10 to 60 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. && $$ PZZ470-042145- /O.CON.KEKA.SE.W.0020.000000T0000Z-260804T2200Z/ Waters from Pt. St. George to Cape Mendocino CA from 10 to 60 nm- 632 AM PDT Tue Aug 4 2026 ...HAZARDOUS SEAS WARNING REMAINS IN EFFECT UNTIL 3 PM PDT THIS AFTERNOON... * WHAT...Very steep and hazardous seas 9 to 11 feet and north winds 15 to 25 kt with gusts up to 30 kt. * WHERE...Waters from Pt. St. George to Cape Mendocino CA from 10 to 60 nm. * WHEN...Until 3 PM PDT this afternoon. * IMPACTS...Very steep and hazardous seas could capsize or cause damage to vessels. PRECAUTIONARY/PREPAREDNESS ACTIONS... Recreational boaters should remain in port. Commercial vessels should prepare for rough seas and consider remaining in port until hazardous seas subside. && $$ PZZ450-041600- /O.CON.KEKA.SC.Y.0073.000000T0000Z-260804T1600Z/ Coastal waters from Pt. St. George to Cape Mendocino CA out 10 nm- 632 AM PDT Tue Aug 4 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 9 AM PDT THIS MORNING... * WHAT...Seas 5 to 7 feet. * WHERE...Coastal waters from Pt. St. George to Cape Mendocino CA out 10 nm. * WHEN...Until 9 AM PDT this morning. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ PZZ455-041600- /O.CON.KEKA.SC.Y.0073.000000T0000Z-260804T1600Z/ Coastal waters from Cape Mendocino to Pt. Arena CA out 10 nm- 632 AM PDT Tue Aug 4 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 9 AM PDT THIS MORNING... * WHAT...Seas 5 to 8 feet. * WHERE...Coastal waters from Cape Mendocino to Pt. Arena CA out 10 nm. * WHEN...Until 9 AM PDT this morning. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ Action: Continued Issued At: 2026-08-04 08:32:44 986 WHUS76 KEKA 041332 MWWEKA URGENT - MARINE WEATHER MESSAGE National Weather Service Eureka CA 632 AM PDT Tue Aug 4 2026 PZZ475-042145- /O.CAN.KEKA.SE.W.0020.000000T0000Z-260804T1600Z/ /O.EXB.KEKA.SC.Y.0073.000000T0000Z-260805T0400Z/ Waters from Cape Mendocino to Pt. Arena CA from 10 to 60 nm- 632 AM PDT Tue Aug 4 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 9 PM PDT THIS EVENING... ...HAZARDOUS SEAS WARNING IS CANCELLED... * WHAT...North winds 10 to 20 kt with gusts up to 30 kt and seas 6 to 11 feet. * WHERE...Waters from Cape Mendocino to Pt. Arena CA from 10 to 60 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. && $$ PZZ470-042145- /O.CON.KEKA.SE.W.0020.000000T0000Z-260804T2200Z/ Waters from Pt. St. George to Cape Mendocino CA from 10 to 60 nm- 632 AM PDT Tue Aug 4 2026 ...HAZARDOUS SEAS WARNING REMAINS IN EFFECT UNTIL 3 PM PDT THIS AFTERNOON... * WHAT...Very steep and hazardous seas 9 to 11 feet and north winds 15 to 25 kt with gusts up to 30 kt. * WHERE...Waters from Pt. St. George to Cape Mendocino CA from 10 to 60 nm. * WHEN...Until 3 PM PDT this afternoon. * IMPACTS...Very steep and hazardous seas could capsize or cause damage to vessels. PRECAUTIONARY/PREPAREDNESS ACTIONS... Recreational boaters should remain in port. Commercial vessels should prepare for rough seas and consider remaining in port until hazardous seas subside. && $$ PZZ450-041600- /O.CON.KEKA.SC.Y.0073.000000T0000Z-260804T1600Z/ Coastal waters from Pt. St. George to Cape Mendocino CA out 10 nm- 632 AM PDT Tue Aug 4 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 9 AM PDT THIS MORNING... * WHAT...Seas 5 to 7 feet. * WHERE...Coastal waters from Pt. St. George to Cape Mendocino CA out 10 nm. * WHEN...Until 9 AM PDT this morning. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ PZZ455-041600- /O.CON.KEKA.SC.Y.0073.000000T0000Z-260804T1600Z/ Coastal waters from Cape Mendocino to Pt. Arena CA out 10 nm- 632 AM PDT Tue Aug 4 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 9 AM PDT THIS MORNING... * WHAT...Seas 5 to 8 feet. * WHERE...Coastal waters from Cape Mendocino to Pt. Arena CA out 10 nm. * WHEN...Until 9 AM PDT this morning. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ Action: Continued Issued At: 2026-08-04 13:25:16 626 WHUS76 KEKA 041609 MWWEKA URGENT - MARINE WEATHER MESSAGE National Weather Service Eureka CA 909 AM PDT Tue Aug 4 2026 PZZ450-455-041715- /O.EXP.KEKA.SC.Y.0073.000000T0000Z-260804T1600Z/ Coastal waters from Pt. St. George to Cape Mendocino CA out 10 nm- Coastal waters from Cape Mendocino to Pt. Arena CA out 10 nm- 909 AM PDT Tue Aug 4 2026 ...SMALL CRAFT ADVISORY HAS EXPIRED... $$ PZZ470-042200- /O.CON.KEKA.SE.W.0020.000000T0000Z-260804T2200Z/ Waters from Pt. St. George to Cape Mendocino CA from 10 to 60 nm- 909 AM PDT Tue Aug 4 2026 ...HAZARDOUS SEAS WARNING REMAINS IN EFFECT UNTIL 3 PM PDT THIS AFTERNOON... * WHAT...Very steep and hazardous seas 9 to 11 feet and north winds 15 to 25 kt with gusts up to 30 kt. * WHERE...Waters from Pt. St. George to Cape Mendocino CA from 10 to 60 nm. * WHEN...Until 3 PM PDT this afternoon. * IMPACTS...Very steep and hazardous seas could capsize or cause damage to vessels. PRECAUTIONARY/PREPAREDNESS ACTIONS... Recreational boaters should remain in port. Commercial vessels should prepare for rough seas and consider remaining in port until hazardous seas subside. && $$ PZZ475-050015- /O.CON.KEKA.SC.Y.0073.000000T0000Z-260805T0400Z/ Waters from Cape Mendocino to Pt. Arena CA from 10 to 60 nm- 909 AM PDT Tue Aug 4 2026 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 9 PM PDT THIS EVENING... * WHAT...North winds 5 to 15 kt with gusts up to 25 kt and seas 7 to 10 feet. * WHERE...Waters from Cape Mendocino to Pt. Arena CA from 10 to 60 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. && $$ Action: Expired Issued At: 2026-08-04 17:04:53 307 WHUS76 KEKA 042204 MWWEKA URGENT - MARINE WEATHER MESSAGE National Weather Service Eureka CA 304 PM PDT Tue Aug 4 2026 PZZ470-050615- /O.EXP.KEKA.SE.W.0020.000000T0000Z-260804T2200Z/ /O.EXB.KEKA.SC.Y.0073.000000T0000Z-260805T1600Z/ Waters from Pt. St. George to Cape Mendocino CA from 10 to 60 nm- 304 PM PDT Tue Aug 4 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 9 AM PDT WEDNESDAY... ...HAZARDOUS SEAS WARNING HAS EXPIRED... * WHAT...North winds 10 to 20 kt with gusts up to 25 kt and seas 7 to 10 feet. * WHERE...Waters from Pt. St. George to Cape Mendocino CA from 10 to 60 nm. * WHEN...Until 9 AM PDT Wednesday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ PZZ475-050615- /O.EXT.KEKA.SC.Y.0073.000000T0000Z-260805T1000Z/ Waters from Cape Mendocino to Pt. Arena CA from 10 to 60 nm- 304 PM PDT Tue Aug 4 2026 ...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 3 AM PDT WEDNESDAY... * WHAT...North winds 5 to 15 kt and seas 6 to 8 feet. * WHERE...Waters from Cape Mendocino to Pt. Arena CA from 10 to 60 nm. * WHEN...Until 3 AM PDT Wednesday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||