Hazardous Seas Watch
URGENT - MARINE WEATHER MESSAGE
National Weather Service Eureka CA
258 AM PST Thu Nov 20 2025
PZZ450-201900-
/O.CON.KEKA.SC.Y.0128.251120T1700Z-251120T2300Z/
/O.CON.KEKA.SE.A.0010.251120T2300Z-251121T1700Z/
Pt St George to Cape Mendocino out 10 nm-
258 AM PST Thu Nov 20 2025
...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 9 AM THIS MORNING
TO 3 PM PST THIS AFTERNOON...
...HAZARDOUS SEAS WATCH REMAINS IN EFFECT FROM THIS AFTERNOON
THROUGH FRIDAY MORNING...
* WHAT...For the Small Craft Advisory, seas 9 to 11 feet
expected. For the Hazardous Seas Watch, very steep and
hazardous seas 11 to 16 feet possible.
* WHERE...Pt St George to Cape Mendocino out 10 nm.
* WHEN...For the Small Craft Advisory, from 9 AM this morning to
3 PM PST this afternoon. For the Hazardous Seas Watch, from
this afternoon through Friday morning.
* IMPACTS...Very steep and hazardous seas could capsize or cause
damage to vessels.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Consider altering your plans to avoid possible hazardous sea
conditions.
&&
$$
URGENT - MARINE WEATHER MESSAGE
National Weather Service Eureka CA
258 AM PST Thu Nov 20 2025
PZZ455-201900-
/O.CON.KEKA.SC.Y.0128.251120T1700Z-251120T2300Z/
/O.CON.KEKA.SE.A.0010.251120T2300Z-251121T1700Z/
Cape Mendocino to Pt Arena out 10 nm-
258 AM PST Thu Nov 20 2025
...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 9 AM THIS MORNING
TO 3 PM PST THIS AFTERNOON...
...HAZARDOUS SEAS WATCH REMAINS IN EFFECT FROM THIS AFTERNOON
THROUGH FRIDAY MORNING...
* WHAT...For the Small Craft Advisory, seas 7 to 9 feet
expected. For the Hazardous Seas Watch, very steep and
hazardous seas 12 to 16 feet possible.
* WHERE...Cape Mendocino to Pt Arena out 10 nm.
* WHEN...For the Small Craft Advisory, from 9 AM this morning to
3 PM PST this afternoon. For the Hazardous Seas Watch, from
this afternoon through Friday morning.
* IMPACTS...Very steep and hazardous seas could capsize or cause
damage to vessels.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Consider altering your plans to avoid possible hazardous sea
conditions.
&&
$$
URGENT - MARINE WEATHER MESSAGE
National Weather Service Eureka CA
258 AM PST Thu Nov 20 2025
PZZ470-201900-
/O.CON.KEKA.SC.Y.0128.251120T1700Z-251120T2300Z/
/O.CON.KEKA.SE.A.0010.251120T2300Z-251121T1700Z/
Pt St George to Cape Mendocino 10 to 60 nm-
258 AM PST Thu Nov 20 2025
...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 9 AM THIS MORNING
TO 3 PM PST THIS AFTERNOON...
...HAZARDOUS SEAS WATCH REMAINS IN EFFECT FROM THIS AFTERNOON
THROUGH FRIDAY MORNING...
* WHAT...For the Small Craft Advisory, seas 11 to 13 feet
expected. For the Hazardous Seas Watch, very steep and
hazardous seas 13 to 17 feet possible.
* WHERE...Pt St George to Cape Mendocino 10 to 60 nm.
* WHEN...For the Small Craft Advisory, from 9 AM this morning to
3 PM PST this afternoon. For the Hazardous Seas Watch, from
this afternoon through Friday morning.
* IMPACTS...Very steep and hazardous seas could capsize or cause
damage to vessels.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Consider altering your plans to avoid possible hazardous sea
conditions.
&&
$$
URGENT - MARINE WEATHER MESSAGE
National Weather Service Eureka CA
258 AM PST Thu Nov 20 2025
PZZ475-201900-
/O.CON.KEKA.SC.Y.0128.251120T1700Z-251120T2300Z/
/O.CON.KEKA.SE.A.0010.251120T2300Z-251121T1700Z/
Cape Mendocino to Pt Arena 10 to 60 nm-
258 AM PST Thu Nov 20 2025
...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 9 AM THIS MORNING
TO 3 PM PST THIS AFTERNOON...
...HAZARDOUS SEAS WATCH REMAINS IN EFFECT FROM THIS AFTERNOON
THROUGH FRIDAY MORNING...
* WHAT...For the Small Craft Advisory, northwest winds 15 to 20
kt with gusts up to 25 kt and seas 10 to 12 feet expected. For
the Hazardous Seas Watch, very steep and hazardous seas 14 to
16 feet possible.
* WHERE...Cape Mendocino to Pt Arena 10 to 60 nm.
* WHEN...For the Small Craft Advisory, from 9 AM this morning to
3 PM PST this afternoon. For the Hazardous Seas Watch, from
this afternoon through Friday morning.
* IMPACTS...Very steep and hazardous seas could capsize or cause
damage to vessels.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Consider altering your plans to avoid possible hazardous sea
conditions.
&&
$$
