Small Craft Advisory 68, NWS Eureka, CA

459 
WHUS76 KEKA 091618
MWWEKA

URGENT - MARINE WEATHER MESSAGE
National Weather Service Eureka CA
918 AM PDT Thu Jul 9 2026

PZZ475-100030-
/O.CON.KEKA.SC.Y.0068.000000T0000Z-260710T0000Z/
/O.CON.KEKA.GL.W.0025.260710T0000Z-260710T1500Z/
Waters from Cape Mendocino to Pt. Arena CA from 10 to 60 nm-
918 AM PDT Thu Jul 9 2026

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 5 PM PDT THIS
AFTERNOON...
...GALE WARNING REMAINS IN EFFECT FROM 5 PM THIS AFTERNOON TO
8 AM PDT FRIDAY...

* WHAT...For the Gale Warning, northwest winds 20 to 30 kt with
  gusts to 40 kt and seas 7 to 10 feet expected. For the Small
  Craft Advisory, northwest winds 20 to 25 kt with localized gusts
  to 35 kt and seas 8 to 10 feet.

* WHERE...Waters from Cape Mendocino to Pt. Arena CA from 10 to 
  60 nm.

* WHEN...For the Gale Warning, from 5 PM this afternoon to 8 AM 
  PDT Friday. For the Small Craft Advisory, until 5 PM PDT this 
  afternoon.

* 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.

&&

$$

PZZ415-450-100030-
/O.CON.KEKA.SC.Y.0067.000000T0000Z-260710T1800Z/
Humboldt Bay-
Coastal waters from Pt. St. George to Cape Mendocino CA out 10 nm-
918 AM PDT Thu Jul 9 2026

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 11 AM PDT
FRIDAY...

* WHAT...Northwest winds 5 to 15 kt with gusts to 30 kt and seas 
  5 to 8 feet.

* WHERE...Humboldt Bay and Coastal waters from Pt. St. George to 
  Cape Mendocino CA out 10 nm.

* WHEN...Until 11 AM PDT Friday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

PZZ455-100030-
/O.CON.KEKA.SC.Y.0067.000000T0000Z-260711T0500Z/
Coastal waters from Cape Mendocino to Pt. Arena CA out 10 nm-
918 AM PDT Thu Jul 9 2026

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 10 PM PDT
FRIDAY...

* WHAT...Northwest winds 15 to 25 kt with localized gusts to 40 
  kt and seas 7 to 10 feet.

* WHERE...Coastal waters from Cape Mendocino to Pt. Arena CA out 
  10 nm.

* WHEN...Until 10 PM PDT Friday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

PZZ470-100030-
/O.CON.KEKA.SC.Y.0067.000000T0000Z-260711T0500Z/
Waters from Pt. St. George to Cape Mendocino CA from 10 to 60 nm-
918 AM PDT Thu Jul 9 2026

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 10 PM PDT
FRIDAY...

* WHAT...North winds 15 to 25 kt with gusts to 30 kt and seas 6 
  to 9 feet.

* WHERE...Waters from Pt. St. George to Cape Mendocino CA from 
  10 to 60 nm.

* WHEN...Until 10 PM PDT Friday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

456 
WHUS76 KEKA 092212
MWWEKA

URGENT - MARINE WEATHER MESSAGE
National Weather Service Eureka CA
312 PM PDT Thu Jul 9 2026

PZZ475-100615-
/O.CON.KEKA.SC.Y.0068.000000T0000Z-260710T0000Z/
/O.CON.KEKA.GL.W.0025.260710T0000Z-260710T1500Z/
Waters from Cape Mendocino to Pt. Arena CA from 10 to 60 nm-
312 PM PDT Thu Jul 9 2026

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 5 PM PDT THIS
AFTERNOON...
...GALE WARNING REMAINS IN EFFECT UNTIL 8 AM PDT FRIDAY...

* WHAT...For the Gale Warning, northwest winds 20 to 30 kt with
  gusts to 40 kt and seas 8 to 11 feet expected. For the Small
  Craft Advisory, northwest winds 20 to 30 kt with localized gusts
  to 35 kt and seas around 10 feet.

* WHERE...Waters from Cape Mendocino to Pt. Arena CA from 10 to 
  60 nm.

* WHEN...For the Gale Warning, until 8 AM PDT Friday. For the 
  Small Craft Advisory, until 5 PM PDT this afternoon.

* 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.

&&

$$

PZZ415-450-100615-
/O.CON.KEKA.SC.Y.0067.000000T0000Z-260710T1800Z/
Humboldt Bay-
Coastal waters from Pt. St. George to Cape Mendocino CA out 10 nm-
312 PM PDT Thu Jul 9 2026

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 11 AM PDT
FRIDAY...

* WHAT...North winds 5 to 15 kt with gusts to 30 kt and seas 4 to
  7 feet.

* WHERE...Humboldt Bay and Coastal waters from Pt. St. George to 
  Cape Mendocino CA out 10 nm.

* WHEN...Until 11 AM PDT Friday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

PZZ455-100615-
/O.CON.KEKA.SC.Y.0067.000000T0000Z-260711T0500Z/
Coastal waters from Cape Mendocino to Pt. Arena CA out 10 nm-
312 PM PDT Thu Jul 9 2026

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 10 PM PDT
FRIDAY...

* WHAT...Northwest winds 20 to 30 kt with localized gusts to 40 
  kt and seas 7 to 10 feet.

* WHERE...Coastal waters from Cape Mendocino to Pt. Arena CA out 
  10 nm.

* WHEN...Until 10 PM PDT Friday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

PZZ470-100615-
/O.CON.KEKA.SC.Y.0067.000000T0000Z-260711T0500Z/
Waters from Pt. St. George to Cape Mendocino CA from 10 to 60 nm-
312 PM PDT Thu Jul 9 2026

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 10 PM PDT
FRIDAY...

* WHAT...North winds 15 to 25 kt with gusts to 30 kt and seas 6 
  to 9 feet.

* WHERE...Waters from Pt. St. George to Cape Mendocino CA from 
  10 to 60 nm.

* WHEN...Until 10 PM PDT Friday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

AREA FORECAST DISCUSSION
National Weather Service Eureka CA
116 AM PDT Thu Jul 9 2026

KEY MESSAGES

* Coastal Stratus and Fog: Marine low clouds and areas of fog
  will affect the immediate coast, bringing cool daytime
  temperatures and overnight dampness.

* Interior Heat: An upper-level ridge will expand westward,
  causing temperatures to rise well above normal across inland
  valleys including Lake, Trinity, and interior Mendocino counties
  through the weekend.

.SYNOPSIS...Shallow coastal stratus and fog will persist along the
immediate coast with limited afternoon clearing through Friday.
Inland areas will remain dry and hot under a building upper-level
ridge.

&&

.DISCUSSION...An upper-level ridge over the Southwest US is
expanding westward over Northwest California. Subsidence aloft is
compressing the marine layer, keeping it shallow and confined to
the coast and adjacent lower valleys. Inland areas will experience
warming, with afternoon high temperatures in the mid to upper 90s
becoming widespread across the interior valleys of Trinity,
Mendocino, and Lake counties this afternoon.

Early next week, the placement of the upper ridge will determine
the track of potential monsoonal moisture. Current guidance
indicates a continuing warm trend for the interior, with a low
probability of thunderstorm development over northeastern Trinity
County.

&&

.AVIATION...A compressed marine layer has brought low ceilings and
reduced visibilities to coastal locations. At KACV, IFR to LIFR
conditions in stratus and fog will persist through mid-morning
before gradual clearing. Temporary southerly surface winds at KACV
and KCEC overnight indicate localized coastal eddy development
rather than a sustained southerly wind pattern. Clear skies are
forecast for KUKI.

&&

.MARINE...The surface pressure gradient between an offshore
surface high pressure system and an inland surface thermal low is
tightening. South of Cape Mendocino, sustained northwest winds of
20 to 25 knots are generating steep, wind-driven seas. A Gale
Watch is in effect for the southern outer waters starting at 5 AM
Thursday morning through Thursday evening due to potential gusts
up to 40 knots, with conditions being monitored for a potential
upgrade to a Gale Warning. For the northern outer waters, winds of
20 to 25 knots combined with steep 9-foot waves at short 8-second
periods satisfy advisory criteria. All coastal marine zones are
currently under a Small Craft Advisory.

&&

.EKA WATCHES/WARNINGS/ADVISORIES...
CA...
None.
NORTHWEST CALIFORNIA COASTAL WATERS...
     Small Craft Advisory until 11 AM PDT Friday for PZZ415-450.

     Small Craft Advisory until 10 PM PDT Friday for PZZ455-470.

     Small Craft Advisory until 5 AM PDT early this morning for
     PZZ475.

     Gale Watch from 5 AM PDT early this morning through this
     evening for PZZ475.

&&

NOTE: The full forecast discussion is now regularly issued between
10 am/pm and 1 pm/am. Additional updates will be issued as needed.

Visit us at https://www.weather.gov/eureka

Follow us on Facebook and Twitter at:
https://www.facebook.com/NWSEureka
https://www.twitter.com/NWSEureka

For forecast zone information
see the forecast zone map online:
https://www.weather.gov/images/eka/zonemap.png