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Hazardous Seas Warning


URGENT - MARINE WEATHER MESSAGE
National Weather Service Eureka CA
1116 PM PDT Wed Sep 17 2025

PZZ450-181430-
/O.CON.KEKA.SC.Y.0096.000000T0000Z-250918T1400Z/
/O.CON.KEKA.SE.W.0030.250918T1400Z-250919T0600Z/
Pt St George to Cape Mendocino out 10 nm-
1116 PM PDT Wed Sep 17 2025

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 7 AM PDT
THURSDAY...
...HAZARDOUS SEAS WARNING REMAINS IN EFFECT FROM 7 AM TO 11 PM
PDT THURSDAY...

* WHAT...For the Hazardous Seas Warning, very steep and hazardous
  seas 8 to 11 feet expected. For the Small Craft Advisory, north
  winds 5 to 15 kt with gusts to 25 kt and seas 7 to 10 feet.

* WHERE...Pt St George to Cape Mendocino out 10 nm.

* WHEN...For the Hazardous Seas Warning, from 7 AM to 11 PM PDT
  Thursday. For the Small Craft Advisory, until 7 AM PDT
  Thursday.

* 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.

&&

$$

URGENT - MARINE WEATHER MESSAGE
National Weather Service Medford OR
1236 PM PDT Wed Sep 17 2025

PZZ370-181230-
/O.CON.KMFR.SC.Y.0076.250918T0000Z-250919T1800Z/
/O.UPG.KMFR.SE.A.0012.250918T0600Z-250919T1800Z/
/O.NEW.KMFR.SE.W.0034.250918T0600Z-250919T1800Z/
Waters from Florence to Cape Blanco OR from 10 to 60 nm-
1236 PM PDT Wed Sep 17 2025

...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 5 PM THIS
AFTERNOON TO 11 AM PDT FRIDAY...
...HAZARDOUS SEAS WARNING IN EFFECT FROM 11 PM THIS EVENING TO
11 AM PDT FRIDAY...

* WHAT...For the Small Craft Advisory, north winds 20 to 30 kt
  with gusts up to 35 kt and steep seas 7 to 10 ft. For the
  Hazardous Seas Warning, very steep and hazardous seas 8 to 11 ft.

* WHERE...For the small craft advisory, all areas until 11 PM
  Wednesday, then around 20 nm offshore from Cape Blanco and out
  to 60 nm from Coos Bay. For the Hazardous Seas Watch, everywhere
  else.

* WHEN...For the Small Craft Advisory, from 5 PM this afternoon
  to 11 AM PDT Friday. For the Hazardous Seas Warning, from 11
  PM this evening to 11 AM PDT Friday.

* IMPACTS...Very steep and hazardous seas could capsize or
  damage vessels. Bar crossings will become especially
  treacherous.

* View the hazard area in detail at https://go.usa.gov/x6hks

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Recreational boaters should remain in port. Commercial vessels
should prepare for very steep seas and consider remaining in port
until conditions improve.

&&

$$

U.S. Dept. of Commerce
NOAA National Weather Service
1325 East West Highway
Silver Spring, MD 20910
E-mail: w-nws.webmaster@noaa.gov
Page last modified: June 2, 2009
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