Alert archive / California / High Surf Advisories in 2026

High Surf Advisory 1, NWS Eureka, CA

January 6, 2026Del Norte County, Humboldt County, Mendocino County, California

NWS Eureka, CA issued this high surf advisory at Jan 6, 2026, 2:21 PM PST for Del Norte County, Humboldt County, Mendocino County, California. It took effect at Jan 7, 2026, 6:00 PM PST. It was in force for 28 hr.

The area

The counties it named.

The facts

Issued
Jan 6, 2026, 2:21 PM PST (22:21 UTC)
In effect from
Jan 7, 2026, 6:00 PM PST
Expired
Jan 8, 2026, 10:00 PM PST
In force
28 hr
Issued by
NWS Eureka, CA

Counties Del Norte County, CA, Humboldt County, CA, Mendocino County, CA

The radar

The Eureka (Bunker Hill) radar (KBHX), 47 km from the middle of the area, began a volume at 22:26 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Oakland, CA (KOAK), launched 12:00Z, 10.4 hours before the alert went out and 349 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Oakland, CA at 12:00Z on 2026-01-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Oakland, CA at 12:00Z on 2026-01-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 127 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
2 J/kg
Mixed-layer CIN
-36 J/kg
Mixed-layer LCL
756 m above ground
0-6 km bulk shear
29 kt
0-1 km storm-relative helicity
127 m²/s²
0-3 km storm-relative helicity
133 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

008 
WHUS46 KEKA 062221
CFWEKA

Coastal Hazard Message
National Weather Service Eureka CA
221 PM PST Tue Jan 6 2026

CAZ101-103-104-070630-
/O.NEW.KEKA.SU.Y.0001.260108T0300Z-260109T0000Z/
/O.CON.KEKA.BH.S.0001.260107T1300Z-260108T0200Z/
Coastal Del Norte-Northern Humboldt Coast-Southwestern Humboldt-
221 PM PST Tue Jan 6 2026

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT FROM LATE TONIGHT
THROUGH WEDNESDAY AFTERNOON...
...HIGH SURF ADVISORY IN EFFECT FROM 7 PM WEDNESDAY TO 4 PM PST
THURSDAY...

* WHAT...For the High Surf Advisory, large breaking waves up to 22
  to 25 feet. For the Beach Hazards Statement, increased threat of
  sneaker waves expected before the arrival of this very large 
  swell.

* WHERE...Coastal Del Norte, Northern Humboldt Coast and 
  Southwestern Humboldt Counties.

* WHEN...For the High Surf Advisory, from 7 PM Wednesday to 4 PM 
  PST Thursday. For the Beach Hazards Statement, from late 
  tonight through Wednesday afternoon. .

* IMPACTS...Dangerous surf conditions and localized beach 
  erosion. Beachcombing is highly discouraged! Large, unexpected 
  waves can sweep across the beach without warning, sweeping 
  people into the sea from rocks, jetties, and beaches. These 
  sneaker waves can also move large objects such as logs, 
  crushing anyone caught underneath.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

Large breaking waves along the coast will lead to increased wave
run-up on beaches with waves topping and washing over large rocks
and jetties. These large waves can be erratic and unpredictable.
Use extra caution near the surf zone as these large waves will be
capable of sweeping people into the frigid and turbulent ocean
water. Mariners traversing the bar are urged to exercise extreme
caution or stay in port until the threat subsides. Please contact
the U.S. Coast Guard for information regarding harbor and bar
closures.

Don't be fooled by an ocean that looks calm.  There can be
30 minutes of small waves before a sneaker wave strikes.  Avoid
rocks and jetties. Avoid steep beaches.  Stay much farther back
from the water and never turn your back on the ocean.

&&

$$

CAZ109-070630-
/O.NEW.KEKA.SU.Y.0001.260108T0300Z-260109T0000Z/
/O.CON.KEKA.BH.S.0001.260107T1700Z-260108T0200Z/
Mendocino Coast-
221 PM PST Tue Jan 6 2026

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT FROM WEDNESDAY
MORNING THROUGH WEDNESDAY AFTERNOON...
...HIGH SURF ADVISORY IN EFFECT FROM 7 PM WEDNESDAY TO 4 PM PST
THURSDAY...

* WHAT...For the High Surf Advisory, large breaking waves up to 22
  to 25 feet. For the Beach Hazards Statement, increased threat of
  sneaker waves expected before the arrival of this very large 
  swell.

* WHERE...Mendocino Coast County.

* WHEN...For the High Surf Advisory, from 7 PM Wednesday to 4 PM 
  PST Thursday. For the Beach Hazards Statement, from Wednesday 
  morning through Wednesday afternoon. .

* IMPACTS...Dangerous surf conditions and localized beach 
  erosion. Beachcombing is highly discouraged! Large, unexpected 
  waves can sweep across the beach without warning, sweeping 
  people into the sea from rocks, jetties, and beaches. These 
  sneaker waves can also move large objects such as logs, 
  crushing anyone caught underneath.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

Large breaking waves along the coast will lead to increased wave
run-up on beaches with waves topping and washing over large rocks
and jetties. These large waves can be erratic and unpredictable.
Use extra caution near the surf zone as these large waves will be
capable of sweeping people into the frigid and turbulent ocean
water. Mariners traversing the bar are urged to exercise extreme
caution or stay in port until the threat subsides. Please contact
the U.S. Coast Guard for information regarding harbor and bar
closures.

Don't be fooled by an ocean that looks calm.  There can be
30 minutes of small waves before a sneaker wave strikes.  Avoid
rocks and jetties. Avoid steep beaches.  Stay much farther back
from the water and never turn your back on the ocean.

&&

$$
8 follow-up statements
425 
WHUS46 KEKA 070626
CFWEKA

Coastal Hazard Message
National Weather Service Eureka CA
1026 PM PST Tue Jan 6 2026

CAZ101-103-104-071430-
/O.CON.KEKA.SU.Y.0001.260108T0300Z-260109T0000Z/
/O.CON.KEKA.BH.S.0001.260107T1300Z-260108T0200Z/
Coastal Del Norte-Northern Humboldt Coast-Southwestern Humboldt-
1026 PM PST Tue Jan 6 2026

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT FROM 5 AM PST
WEDNESDAY THROUGH WEDNESDAY AFTERNOON...
...HIGH SURF ADVISORY REMAINS IN EFFECT FROM 7 PM WEDNESDAY TO
4 PM PST THURSDAY...

* WHAT...For the High Surf Advisory, large breaking waves up to 
  22 to 25 feet. For the Beach Hazards Statement, increased 
  threat of sneaker waves expected before the arrival of this 
  very large swell.

* WHERE...Coastal Del Norte, Northern Humboldt Coast and 
  Southwestern Humboldt Counties.

* WHEN...For the High Surf Advisory, from 7 PM Wednesday to 4 PM
  PST Thursday. For the Beach Hazards Statement, from late tonight
  through Wednesday afternoon.

* IMPACTS...Dangerous surf conditions and localized beach 
  erosion. Beachcombing is highly discouraged! Large, unexpected 
  waves can sweep across the beach without warning, sweeping 
  people into the sea from rocks, jetties, and beaches. These 
  sneaker waves can also move large objects such as logs, 
  crushing anyone caught underneath.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Large breaking waves along the coast will lead to increased wave
run-up on beaches with waves topping and washing over large rocks
and jetties. These large waves can be erratic and unpredictable.
Use extra caution near the surf zone as these large waves will be
capable of sweeping people into the frigid and turbulent ocean
water. Mariners traversing the bar are urged to exercise extreme
caution or stay in port until the threat subsides. Please contact
the U.S. Coast Guard for information regarding harbor and bar
closures.

Don't be fooled by an ocean that looks calm.  There can be
30 minutes of small waves before a sneaker wave strikes.  Avoid
rocks and jetties. Avoid steep beaches.  Stay much farther back
from the water and never turn your back on the ocean.

&&

$$

CAZ109-071430-
/O.CON.KEKA.SU.Y.0001.260108T0300Z-260109T0000Z/
/O.CON.KEKA.BH.S.0001.260107T1700Z-260108T0200Z/
Mendocino Coast-
1026 PM PST Tue Jan 6 2026

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT FROM 9 AM PST
WEDNESDAY THROUGH WEDNESDAY AFTERNOON...
...HIGH SURF ADVISORY REMAINS IN EFFECT FROM 7 PM WEDNESDAY TO
4 PM PST THURSDAY...

* WHAT...For the High Surf Advisory, large breaking waves up to 
  22 to 25 feet. For the Beach Hazards Statement, increased 
  threat of sneaker waves expected before the arrival of this 
  very large swell.

* WHERE...Mendocino Coast County.

* WHEN...For the High Surf Advisory, from 7 PM Wednesday to 4 PM
  PST Thursday. For the Beach Hazards Statement, from Wednesday
  morning through Wednesday afternoon.

* IMPACTS...Dangerous surf conditions and localized beach 
  erosion. Beachcombing is highly discouraged! Large, unexpected 
  waves can sweep across the beach without warning, sweeping 
  people into the sea from rocks, jetties, and beaches. These 
  sneaker waves can also move large objects such as logs, 
  crushing anyone caught underneath.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Large breaking waves along the coast will lead to increased wave
run-up on beaches with waves topping and washing over large rocks
and jetties. These large waves can be erratic and unpredictable.
Use extra caution near the surf zone as these large waves will be
capable of sweeping people into the frigid and turbulent ocean
water. Mariners traversing the bar are urged to exercise extreme
caution or stay in port until the threat subsides. Please contact
the U.S. Coast Guard for information regarding harbor and bar
closures.

Don't be fooled by an ocean that looks calm.  There can be
30 minutes of small waves before a sneaker wave strikes.  Avoid
rocks and jetties. Avoid steep beaches.  Stay much farther back
from the water and never turn your back on the ocean.

&&

$$
514 
WHUS46 KEKA 071102
CFWEKA

Coastal Hazard Message
National Weather Service Eureka CA
302 AM PST Wed Jan 7 2026

CAZ101-103-104-071915-
/O.EXT.KEKA.SU.Y.0001.260108T0200Z-260109T0000Z/
/O.CON.KEKA.BH.S.0001.260107T1300Z-260108T0200Z/
Coastal Del Norte-Northern Humboldt Coast-Southwestern Humboldt-
302 AM PST Wed Jan 7 2026

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT THROUGH THIS
AFTERNOON...
...HIGH SURF ADVISORY NOW IN EFFECT FROM 6 PM THIS EVENING TO
4 PM PST THURSDAY...

* WHAT...For the High Surf Advisory, large breaking waves up to 
  22 to 25 feet. For the Beach Hazards Statement, increased 
  threat of sneaker waves expected before the arrival of this 
  very large swell.

* WHERE...Coastal Del Norte, Northern Humboldt Coast and 
  Southwestern Humboldt Counties.

* WHEN...For the High Surf Advisory, from 6 PM this evening to 4 
  PM PST Thursday. For the Beach Hazards Statement, through this 
  afternoon. .

* IMPACTS...Dangerous surf conditions and localized beach 
  erosion. Beachcombing is highly discouraged! Large, unexpected 
  waves can sweep across the beach without warning, sweeping 
  people into the sea from rocks, jetties, and beaches. These 
  sneaker waves can also move large objects such as logs, 
  crushing anyone caught underneath.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Large breaking waves along the coast will lead to increased wave
run-up on beaches with waves topping and washing over large rocks
and jetties. These large waves can be erratic and unpredictable.
Use extra caution near the surf zone as these large waves will be
capable of sweeping people into the frigid and turbulent ocean
water. Mariners traversing the bar are urged to exercise extreme
caution or stay in port until the threat subsides. Please contact
the U.S. Coast Guard for information regarding harbor and bar
closures.

Don't be fooled by an ocean that looks calm.  There can be
30 minutes of small waves before a sneaker wave strikes.  Avoid
rocks and jetties. Avoid steep beaches.  Stay much farther back
from the water and never turn your back on the ocean.

&&

$$

CAZ109-071915-
/O.EXT.KEKA.SU.Y.0001.260108T0200Z-260109T0000Z/
/O.CON.KEKA.BH.S.0001.260107T1700Z-260108T0200Z/
Mendocino Coast-
302 AM PST Wed Jan 7 2026

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT FROM 9 AM PST THIS
MORNING THROUGH THIS AFTERNOON...
...HIGH SURF ADVISORY NOW IN EFFECT FROM 6 PM THIS EVENING TO
4 PM PST THURSDAY...

* WHAT...For the High Surf Advisory, large breaking waves up to 
  22 to 25 feet. For the Beach Hazards Statement, increased 
  threat of sneaker waves expected before the arrival of this 
  very large swell.

* WHERE...Mendocino Coast County.

* WHEN...For the High Surf Advisory, from 6 PM this evening to 4 
  PM PST Thursday. For the Beach Hazards Statement, from 9 AM 
  PST this morning through this afternoon. .

* IMPACTS...Dangerous surf conditions and localized beach 
  erosion. Beachcombing is highly discouraged! Large, unexpected 
  waves can sweep across the beach without warning, sweeping 
  people into the sea from rocks, jetties, and beaches. These 
  sneaker waves can also move large objects such as logs, 
  crushing anyone caught underneath.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Large breaking waves along the coast will lead to increased wave
run-up on beaches with waves topping and washing over large rocks
and jetties. These large waves can be erratic and unpredictable.
Use extra caution near the surf zone as these large waves will be
capable of sweeping people into the frigid and turbulent ocean
water. Mariners traversing the bar are urged to exercise extreme
caution or stay in port until the threat subsides. Please contact
the U.S. Coast Guard for information regarding harbor and bar
closures.

Don't be fooled by an ocean that looks calm.  There can be
30 minutes of small waves before a sneaker wave strikes.  Avoid
rocks and jetties. Avoid steep beaches.  Stay much farther back
from the water and never turn your back on the ocean.

&&

$$
438 
WHUS46 KEKA 071900
CFWEKA

Coastal Hazard Message
National Weather Service Eureka CA
1100 AM PST Wed Jan 7 2026

CAZ101-103-104-080300-
/O.CON.KEKA.SU.Y.0001.260108T0200Z-260109T0000Z/
/O.CON.KEKA.BH.S.0001.000000T0000Z-260108T0200Z/
Coastal Del Norte-Northern Humboldt Coast-Southwestern Humboldt-
1100 AM PST Wed Jan 7 2026

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT UNTIL 6 PM PST THIS
EVENING...
...HIGH SURF ADVISORY REMAINS IN EFFECT FROM 6 PM THIS EVENING TO
4 PM PST THURSDAY...

* WHAT...For the High Surf Advisory, large breaking waves up to 
  22 to 25 feet. For the Beach Hazards Statement, increased 
  threat of sneaker waves expected before the arrival of this 
  very large swell.

* WHERE...Coastal Del Norte, Northern Humboldt Coast and 
  Southwestern Humboldt Counties.

* WHEN...For the High Surf Advisory, from 6 PM this evening to 4 
  PM PST Thursday. For the Beach Hazards Statement, through this 
  afternoon. .

* IMPACTS...Dangerous surf conditions and localized beach 
  erosion. Beachcombing is highly discouraged! Large, unexpected 
  waves can sweep across the beach without warning, sweeping 
  people into the sea from rocks, jetties, and beaches. These 
  sneaker waves can also move large objects such as logs, 
  crushing anyone caught underneath.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

Large breaking waves along the coast will lead to increased wave
run-up on beaches with waves topping and washing over large rocks
and jetties. These large waves can be erratic and unpredictable.
Use extra caution near the surf zone as these large waves will be
capable of sweeping people into the frigid and turbulent ocean
water. Mariners traversing the bar are urged to exercise extreme
caution or stay in port until the threat subsides. Please contact
the U.S. Coast Guard for information regarding harbor and bar
closures.

Don't be fooled by an ocean that looks calm.  There can be
30 minutes of small waves before a sneaker wave strikes.  Avoid
rocks and jetties. Avoid steep beaches.  Stay much farther back
from the water and never turn your back on the ocean.

&&

$$

CAZ109-080300-
/O.CON.KEKA.SU.Y.0001.260108T0200Z-260109T0000Z/
/O.CON.KEKA.BH.S.0001.000000T0000Z-260108T0200Z/
Mendocino Coast-
1100 AM PST Wed Jan 7 2026

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT UNTIL 6 PM PST THIS
EVENING...
...HIGH SURF ADVISORY REMAINS IN EFFECT FROM 6 PM THIS EVENING TO
4 PM PST THURSDAY...

* WHAT...For the High Surf Advisory, large breaking waves up to 
  22 to 25 feet. For the Beach Hazards Statement, increased 
  threat of sneaker waves expected before the arrival of this 
  very large swell.

* WHERE...Mendocino Coast County.

* WHEN...For the High Surf Advisory, from 6 PM this evening to 4 
  PM PST Thursday. For the Beach Hazards Statement, from 9 AM 
  PST this morning through this afternoon. .

* IMPACTS...Dangerous surf conditions and localized beach 
  erosion. Beachcombing is highly discouraged! Large, unexpected 
  waves can sweep across the beach without warning, sweeping 
  people into the sea from rocks, jetties, and beaches. These 
  sneaker waves can also move large objects such as logs, 
  crushing anyone caught underneath.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

Large breaking waves along the coast will lead to increased wave
run-up on beaches with waves topping and washing over large rocks
and jetties. These large waves can be erratic and unpredictable.
Use extra caution near the surf zone as these large waves will be
capable of sweeping people into the frigid and turbulent ocean
water. Mariners traversing the bar are urged to exercise extreme
caution or stay in port until the threat subsides. Please contact
the U.S. Coast Guard for information regarding harbor and bar
closures.

Don't be fooled by an ocean that looks calm.  There can be
30 minutes of small waves before a sneaker wave strikes.  Avoid
rocks and jetties. Avoid steep beaches.  Stay much farther back
from the water and never turn your back on the ocean.

&&

$$
312 
WHUS46 KEKA 080649
CFWEKA

Coastal Hazard Message
National Weather Service Eureka CA
1049 PM PST Wed Jan 7 2026

CAZ101-103-104-109-081500-
/O.CON.KEKA.SU.Y.0001.000000T0000Z-260109T0000Z/
Coastal Del Norte-Northern Humboldt Coast-Southwestern Humboldt-
Mendocino Coast-
1049 PM PST Wed Jan 7 2026

...HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 4 PM PST THURSDAY...

* WHAT...Large breaking waves up to 22 to 25 feet. 

* WHERE...Coastal Del Norte, Northern Humboldt Coast, 
  Southwestern Humboldt and Mendocino Coast Counties.

* WHEN...Until 4 PM PST Thursday. .

* IMPACTS...Dangerous surf conditions and localized beach 
  erosion. Beachcombing is highly discouraged!.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Large breaking waves along the coast will lead to increased wave
run-up on beaches with waves topping and washing over large rocks
and jetties. These large waves can be erratic and unpredictable.
Use extra caution near the surf zone as these large waves will be
capable of sweeping people into the frigid and turbulent ocean
water. Mariners traversing the bar are urged to exercise extreme
caution or stay in port until the threat subsides. Please contact
the U.S. Coast Guard for information regarding harbor and bar
closures.

&&

$$
727 
WHUS46 KEKA 081313
CFWEKA

Coastal Hazard Message
National Weather Service Eureka CA
513 AM PST Thu Jan 8 2026

CAZ101-103-104-109-082115-
/O.CON.KEKA.SU.Y.0001.000000T0000Z-260109T0000Z/
Coastal Del Norte-Northern Humboldt Coast-Southwestern Humboldt-
Mendocino Coast-
513 AM PST Thu Jan 8 2026

...HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 4 PM PST THIS
AFTERNOON...

* WHAT...Large breaking waves up to 22 to 25 feet.

* WHERE...Coastal Del Norte, Northern Humboldt Coast, 
  Southwestern Humboldt and Mendocino Coast Counties.

* WHEN...Until 4 PM PST Thursday. .

* IMPACTS...Dangerous surf conditions and localized beach 
  erosion. Beachcombing is highly discouraged!.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Large breaking waves along the coast will lead to increased wave
run-up on beaches with waves topping and washing over large rocks
and jetties. These large waves can be erratic and unpredictable.
Use extra caution near the surf zone as these large waves will be
capable of sweeping people into the frigid and turbulent ocean
water. Mariners traversing the bar are urged to exercise extreme
caution or stay in port until the threat subsides. Please contact
the U.S. Coast Guard for information regarding harbor and bar
closures.

&&

$$
634 
WHUS46 KEKA 081741
CFWEKA

Coastal Hazard Message
National Weather Service Eureka CA
941 AM PST Thu Jan 8 2026

CAZ101-103-104-109-090000-
/O.CON.KEKA.SU.Y.0001.000000T0000Z-260109T0000Z/
Coastal Del Norte-Northern Humboldt Coast-Southwestern Humboldt-
Mendocino Coast-
941 AM PST Thu Jan 8 2026

...HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 4 PM PST THIS
AFTERNOON...

* WHAT...Large breaking waves up to 22 to 25 feet.

* WHERE...Coastal Del Norte, Northern Humboldt Coast, 
  Southwestern Humboldt and Mendocino Coast Counties.

* WHEN...Until 4 PM PST Thursday. .

* IMPACTS...Dangerous surf conditions and localized beach 
  erosion. Beachcombing is highly discouraged!.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Large breaking waves along the coast will lead to increased wave
run-up on beaches with waves topping and washing over large rocks
and jetties. These large waves can be erratic and unpredictable.
Use extra caution near the surf zone as these large waves will be
capable of sweeping people into the frigid and turbulent ocean
water. Mariners traversing the bar are urged to exercise extreme
caution or stay in port until the threat subsides. Please contact
the U.S. Coast Guard for information regarding harbor and bar
closures.

&&

$$
025 
WHUS46 KEKA 082121
CFWEKA

Coastal Hazard Message
National Weather Service Eureka CA
121 PM PST Thu Jan 8 2026

CAZ101-103-104-109-090600-
/O.EXT.KEKA.SU.Y.0001.000000T0000Z-260109T0600Z/
Coastal Del Norte-Northern Humboldt Coast-Southwestern Humboldt-
Mendocino Coast-
121 PM PST Thu Jan 8 2026

...HIGH SURF ADVISORY NOW IN EFFECT UNTIL 10 PM PST THIS
EVENING...

* WHAT...Large breaking waves up to 22 to 25 feet.

* WHERE...Coastal Del Norte, Northern Humboldt Coast, 
  Southwestern Humboldt and Mendocino Coast Counties.

* WHEN...Until 10 PM PST this evening.

* IMPACTS...Dangerous surf conditions and localized beach 
  erosion. Beachcombing is highly discouraged!.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Large breaking waves along the coast will lead to increased wave
run-up on beaches with waves topping and washing over large rocks
and jetties. These large waves can be erratic and unpredictable.
Use extra caution near the surf zone as these large waves will be
capable of sweeping people into the frigid and turbulent ocean
water. Mariners traversing the bar are urged to exercise extreme
caution or stay in port until the threat subsides. Please contact
the U.S. Coast Guard for information regarding harbor and bar
closures.

&&

$$
465 
WHUS46 KEKA 090548
CFWEKA

Coastal Hazard Message
National Weather Service Eureka CA
948 PM PST Thu Jan 8 2026

CAZ101-103-104-109-090700-
/O.EXP.KEKA.SU.Y.0001.000000T0000Z-260109T0600Z/
Coastal Del Norte-Northern Humboldt Coast-Southwestern Humboldt-
Mendocino Coast-
948 PM PST Thu Jan 8 2026

...HIGH SURF ADVISORY WILL EXPIRE AT 10 PM PST THIS EVENING...


$$

What forecasters said that day

The local office's own words before this high surf advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Eureka, CA wrote its last area forecast discussion before this high surf advisory went out at Jan 6, 2:17 PM PST, 4 minutes earlier.

Area forecast discussion, Jan 6, 2:17 PM PST, 4 minutes before
AREA FORECAST DISCUSSION
National Weather Service Eureka CA
217 PM PST Tue Jan 6 2026

.SYNOPSIS...Light rain and mountain snow return tonight through
Wednesday night. High pressure is expected to build in late this
week bringing dry conditions to Northwest California. Sneaker
waves are expected at the coast on Wednesday transitioning into
large surf on Thursday.

&&

.DISCUSSION...The heaviest rain has finally come to an end
allowing streams and rivers across the region to recede.
However, before we can completely dry out, another couple fronts
will bring light to moderate precipitation to primarily the
northern half of the forecast area tonight and then again on
Wednesday. Total precipitation from the two waves of precipitation
will likely range from a couple tenths of an inch to around three
quarters of an inch for coastal and valley locations of Humboldt,
Del Norte, and western Trinity counties with potentially over an
inch in the higher terrain. Snow levels will fall behind each
front, potentially to as low as 2500 feet in Del Norte county
before the snow comes to an end. Total snowfall in the higher
terrain will easily reach advisory criteria, but with very little
expected down to any highway passes, a winter weather advisory has
not been issued at this time. The main concern is highway 199
where light snow may reach the highway Wednesday night for a few
hours with up to an inch or two of snow possible. If trends point
to heavier snow at the tunnel then a winter weather advisory may
need to be introduced in future forecast packages.

In addition to the rain and mountain snow, northwesterly winds will
also ramp up behind the front. Wind gusts in excess of 20 mph will
be possible along the coast Wednesday afternoon and evening along
with many of the ridgetops across the entire region. Locally higher
gusts will be possible on the interior mountains, particularly in
Lake and eastern Trinity counties. Local gusts over 40 mph will be
possible in those areas in the wake of the frontal passage.

Dry conditions are expected beyond Wednesday for the next several
days. Overnight lows will be quite cold with lows in the 20s and 30s
across the region behind the cold front. The frost/freeze seasons
have concluded for all areas with the turn to the new year so no
frost headlines will be issued. However, overnight low temperatures
may approach 30F in portions of Lake and southern Mendocino counties
Thursday and particularly Friday mornings. The need for cold weather
advisories will have to be contemplated for those two mornings. A
warming trend will likely begin over the weekend. /RPA

&&

.AVIATION...(18Z TAFs)...VFR conditions prevail this afternoon with
light winds and elevated BKN-OVC ceilings. An approaching weather
system tonight will bring light rain and moderate southerly winds to
coastal terminals. A break in the rain is forecasted from about 16Z
until about 22Z tomorrow when more rainshowers are possible.
Ceilings are expected to remain in MVFR/VFR with only a 20%
probability of IFR for the North Coast. Inland, light winds remain
with lingering clouds. High resolution models show that some fog/low
cloud development is possible, yet a PROB30 has been issued for KUKI
as far due to forecast uncertainty.

&&

.MARINE...Weak high pressure will be briefly settling over the area
as the low pressure drifts southward. Winds will switch to 10 to 15
kt south to southwest over the northern waters while farther south,
the winds will turn more westerly. Northerly winds are expected to
return through the day on Wednesday as high pressure builds back
into the area. These are expected to peak around 15 to 25 Wednesday
night and Thursday morning.

The 11 second swell moving through the waters is gradually
diminishing and will continue to diminish through Wednesday. A
large, long period swell is expected to move into the waters
Wednesday and Thursday. Initially these waves may be around 3 to 4
feet at 23 seconds. These will build through the day and overnight
to around 17 to 19 feet at 18 seconds by Thursday morning. This is
about 2 feet over the wave watch 3 model and more in line with the
ECMWF wave model. Issued a hazardous seas watch to highlight the
potential for a swell over 17 feet.

The winds and seas are expected to diminish Friday, but the swell
may remain above 10 feet until Friday night. Calmer conditions are
expected on Saturday this coming weekend.

&&

.BEACH HAZARDS...Forecast confidence is growing that a large, long
period swell is expected to move into the waters Wednesday and
Thursday. The forerunners of this wave will start to build in
Wednesday around midday. Initially, these waves may be around 3 to 4
feet at 23 seconds before building to 5 to 8 feet by midday. There
will likely be set behavior with these long periods creating an
increased sneaker wave threat. There will be some background NW
swell and increasing northerly winds, but the sets may still be
distinct enough to catch some people off guard. After the front
runners of this wave group enter the coastal waters, the swell will
keep building overnight to around 17 to 19 feet at 18 seconds by
Thursday morning. Large breakers of 22 to 25 feet are expected for
west and northwest facing beaches. A high surf advisory has been
issued from 7 PM PST Wednesday until 4 PM PST on Thursday due to
these dangerous shoreline conditions.

&&

.EKA WATCHES/WARNINGS/ADVISORIES...
CA...
     Beach Hazards Statement from late tonight through Wednesday
     afternoon for CAZ101-103-104.

     High Surf Advisory from 7 PM Wednesday to 4 PM PST Thursday
     for CAZ101-103-104-109.

     Beach Hazards Statement from Wednesday morning through
     Wednesday afternoon for CAZ109.

NORTHWEST CALIFORNIA COASTAL WATERS...
     Hazardous Seas Warning from 7 PM Wednesday to 3 PM PST
     Thursday for PZZ450-470.

     Hazardous Seas Warning from 11 PM Wednesday to 3 PM PST
     Thursday for PZZ455-475.

&&

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

In the hours before

Local storm report, Jan 6, 9:00 AM PST, 5 hours 21 minutes before
Preliminary Local Storm Report
National Weather Service Eureka CA
900 AM PST Tue Jan 6 2026

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1117 AM     Tstm Wnd Dmg     1 WNW Shelter Cove      40.04N 124.07W
01/03/2026                   Humboldt           CA   NWS Storm Survey

            A one-foot diameter tree was uprooted and
            fell into powerlines near Lariat Court in
            Shelter Cove. The tree fell on a fence
            nearly hitting an outbuilding.

&&

RPA
Local storm report, Jan 6, 9:05 AM PST, 5 hours 16 minutes before
Preliminary Local Storm Report
National Weather Service Eureka CA
905 AM PST Tue Jan 6 2026

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1123 AM     Tstm Wnd Dmg     2 N Shelter Cove        40.06N 124.05W
01/03/2026                   Humboldt           CA   NWS Storm Survey

            Tree down on King Peak Road blocking a
            quarter of the roadway.

&&

RPA
Local storm report, Jan 6, 9:08 AM PST, 5 hours 13 minutes before
Preliminary Local Storm Report
National Weather Service Eureka CA
908 AM PST Tue Jan 6 2026

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1130 AM     Tstm Wnd Dmg     3 ENE Shelter Cove      40.05N 124.00W
01/03/2026                   Humboldt           CA   NWS Storm Survey

            Many branches and a couple small trees down
            along Shelter Cove Road between Shelter Cove
            and Briceland.

&&

RPA
Local storm report, Jan 6, 9:21 AM PST, 5 hours before
Preliminary Local Storm Report
National Weather Service Eureka CA
921 AM PST Tue Jan 6 2026

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1000 PM     Flood            2 SSW Saratoga Springs  39.16N 122.99W
01/05/2026                   Lake               CA   Dept of Highways

            Scott Valley Road flooded and closed near
            Highway 20. Was still flooded as of 8 am on
            the 6th. Start time of 10 pm is a very rough
            estimate.

&&

RPA
Local storm report, Jan 6, 9:24 AM PST, 4 hours 57 minutes before
Preliminary Local Storm Report
National Weather Service Eureka CA
924 AM PST Tue Jan 6 2026

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0215 PM     Flood            3 WNW North Lakeport    39.09N 122.95W
01/05/2026                   Lake               CA   Dept of Highways

            Scotts Valley Road closed east of Hendricks
            Road.

&&

RPA
Local storm report, Jan 6, 9:30 AM PST, 4 hours 51 minutes before
Preliminary Local Storm Report
National Weather Service Eureka CA
930 AM PST Tue Jan 6 2026

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1000 PM     Flood            8 SSW Comptche          39.17N 123.68W
01/05/2026                   Mendocino          CA   Dept of Highways

            Highway 128 closed due to flooding from the
            Navarro River. The river reached the
            official flood stage at approximately 10 pm.

&&

RPA

The office that day

Everything else NWS Eureka, CA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jan 5, 8:52 PM PSTHazardous Seas WatchEKA17 hr
Jan 5, 9:02 PM PSTBeach Hazards StatementEKADel Norte, Humboldt, Mendocino45 hr
Jan 6, 12:01 AM PSTAreal Flood AdvisoryEKALake7 hr
Jan 6, 2:15 PM PSTHazardous Seas WarningEKA56 hr

Nearby

High Surf Advisories in California, 2026Every high surf advisory in 2026

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.