Alert archive / California / Beach Hazards Statements in 2023

Beach Hazards Statement 10, NWS Eureka, CA

November 23, 2023Del Norte County, Humboldt County, Mendocino County, California

NWS Eureka, CA issued this beach hazards statement at Nov 23, 2023, 3:00 AM PST for Del Norte County, Humboldt County, Mendocino County, California. It took effect at Nov 24, 2023, 8:00 PM PST. It was in force for 47 hr.

The area

The counties it named.

The facts

Issued
Nov 23, 2023, 3:00 AM PST (11:00 UTC)
In effect from
Nov 24, 2023, 8:00 PM PST
Expired
Nov 26, 2023, 7:00 PM PST
In force
47 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 10:59 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

Medford/Jackson, OR (KMFR), launched 00:00Z, 11.0 hours before the alert went out and 210 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, Medford/Jackson, OR at 00:00Z on 2023-11-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Medford/Jackson, OR at 00:00Z on 2023-11-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -51 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1388 m above ground
0-6 km bulk shear
41 kt
0-1 km storm-relative helicity
-51 m²/s²
0-3 km storm-relative helicity
-21 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

945 
WHUS46 KEKA 231100
CFWEKA

Coastal Hazard Message
National Weather Service Eureka CA
300 AM PST Thu Nov 23 2023

CAZ101-103-104-109-231900-
/O.NEW.KEKA.BH.S.0010.231125T0400Z-231126T0500Z/
Coastal Del Norte-Northern Humboldt Coast-Southwestern Humboldt-
Mendocino Coast-
300 AM PST Thu Nov 23 2023

...BEACH HAZARDS STATEMENT IN EFFECT FROM FRIDAY EVENING THROUGH
SATURDAY EVENING...

* WHAT...Increased threat of sneaker waves expected.

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

* WHEN...From Friday evening through Saturday evening.. .

* IMPACTS...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...

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.

&&

$$
14 follow-up statements
835 
WHUS46 KEKA 231108
CFWEKA

Coastal Hazard Message
National Weather Service Eureka CA
308 AM PST Thu Nov 23 2023

CAZ101-103-104-109-231915-
/O.CON.KEKA.BH.S.0010.231125T0400Z-231126T0500Z/
Coastal Del Norte-Northern Humboldt Coast-Southwestern Humboldt-
Mendocino Coast-
308 AM PST Thu Nov 23 2023

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT FROM FRIDAY EVENING
THROUGH SATURDAY EVENING...

* WHAT...Increased threat of sneaker waves expected.

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

* WHEN...From Friday evening through Saturday evening.. .

* IMPACTS...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...

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.

&&

$$
629 
WHUS46 KEKA 232303
CFWEKA

Coastal Hazard Message
National Weather Service Eureka CA
303 PM PST Thu Nov 23 2023

CAZ101-103-104-109-241200-
/O.CON.KEKA.BH.S.0010.231125T0400Z-231126T0500Z/
Coastal Del Norte-Northern Humboldt Coast-Southwestern Humboldt-
Mendocino Coast-
303 PM PST Thu Nov 23 2023

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT FROM FRIDAY EVENING
THROUGH SATURDAY EVENING...

* WHAT...Increased threat of sneaker waves expected.

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

* WHEN...From Friday evening through Saturday evening.. .

* IMPACTS...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...

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

&&

$$
647 
WHUS46 KEKA 240459
CFWEKA

Coastal Hazard Message
National Weather Service Eureka CA
859 PM PST Thu Nov 23 2023

CAZ101-103-104-109-241300-
/O.CON.KEKA.BH.S.0010.231125T0400Z-231126T0500Z/
Coastal Del Norte-Northern Humboldt Coast-Southwestern Humboldt-
Mendocino Coast-
859 PM PST Thu Nov 23 2023

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT FROM FRIDAY EVENING
THROUGH SATURDAY EVENING...

* WHAT...Increased threat of sneaker waves expected.

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

* WHEN...From Friday evening through Saturday evening.. .

* IMPACTS...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...

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.

&&

$$
583 
WHUS46 KEKA 241014
CFWEKA

Coastal Hazard Message
National Weather Service Eureka CA
214 AM PST Fri Nov 24 2023

CAZ101-103-104-109-241815-
/O.CON.KEKA.BH.S.0010.231125T0400Z-231126T0500Z/
Coastal Del Norte-Northern Humboldt Coast-Southwestern Humboldt-
Mendocino Coast-
214 AM PST Fri Nov 24 2023

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT FROM THIS EVENING
THROUGH SATURDAY EVENING...

* WHAT...Increased threat of sneaker waves expected.

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

* WHEN...From this evening through Saturday evening.. .

* IMPACTS...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...

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.

&&

$$
069 
WHUS46 KEKA 242143
CFWEKA

Coastal Hazard Message
National Weather Service Eureka CA
143 PM PST Fri Nov 24 2023

CAZ101-103-104-109-250545-
/O.CON.KEKA.BH.S.0010.231125T0400Z-231126T0500Z/
Coastal Del Norte-Northern Humboldt Coast-Southwestern Humboldt-
Mendocino Coast-
143 PM PST Fri Nov 24 2023

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT FROM 8 PM PST THIS
EVENING THROUGH SATURDAY EVENING...

* WHAT...Increased threat of sneaker waves expected.

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

* WHEN...From 8 PM PST this evening through Saturday evening.. .

* IMPACTS...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...

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.

&&

$$
319 
WHUS46 KEKA 250513
CFWEKA

Coastal Hazard Message
National Weather Service Eureka CA
913 PM PST Fri Nov 24 2023

CAZ101-103-104-109-251315-
/O.CON.KEKA.BH.S.0010.000000T0000Z-231126T0500Z/
Coastal Del Norte-Northern Humboldt Coast-Southwestern Humboldt-
Mendocino Coast-
913 PM PST Fri Nov 24 2023

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT THROUGH SATURDAY
EVENING...

* WHAT...Increased threat of sneaker waves expected.

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

* WHEN...Through Saturday evening.. .

* IMPACTS...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...

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.

&&

$$
211 
WHUS46 KEKA 251006
CFWEKA

Coastal Hazard Message
National Weather Service Eureka CA
206 AM PST Sat Nov 25 2023

CAZ101-103-104-109-251815-
/O.EXT.KEKA.BH.S.0010.000000T0000Z-231127T0300Z/
Coastal Del Norte-Northern Humboldt Coast-Southwestern Humboldt-
Mendocino Coast-
206 AM PST Sat Nov 25 2023

...BEACH HAZARDS STATEMENT NOW IN EFFECT THROUGH SUNDAY EVENING...

* WHAT...Increased threat of sneaker waves expected.

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

* WHEN...Through Sunday evening.. .

* IMPACTS...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...

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.

&&

$$
172 
WHUS46 KEKA 251927
CFWEKA

Coastal Hazard Message
National Weather Service Eureka CA
1127 AM PST Sat Nov 25 2023

CAZ101-103-104-109-260330-
/O.CON.KEKA.BH.S.0010.000000T0000Z-231127T0300Z/
Coastal Del Norte-Northern Humboldt Coast-Southwestern Humboldt-
Mendocino Coast-
1127 AM PST Sat Nov 25 2023

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT THROUGH SUNDAY
EVENING...

* WHAT...Increased threat of sneaker waves expected. Infrequent
  surf run up as much as 15 feet has been observed. 

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

* WHEN...Through Sunday evening.. .

* IMPACTS...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...

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.

&&

$$
574 
WHUS46 KEKA 252216
CFWEKA

Coastal Hazard Message
National Weather Service Eureka CA
216 PM PST Sat Nov 25 2023

CAZ101-103-104-109-260630-
/O.CON.KEKA.BH.S.0010.000000T0000Z-231127T0300Z/
Coastal Del Norte-Northern Humboldt Coast-Southwestern Humboldt-
Mendocino Coast-
216 PM PST Sat Nov 25 2023

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT THROUGH SUNDAY
EVENING...

* WHAT...Increased threat of sneaker waves expected. Infrequent
  surf run up as much as 17 feet has been observed.

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

* WHEN...Through Sunday evening.. .

* IMPACTS...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...

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.

&&

$$
320 
WHUS46 KEKA 260207
CFWEKA

Coastal Hazard Message
National Weather Service Eureka CA
607 PM PST Sat Nov 25 2023

CAZ103-261015-
/O.NEW.KEKA.CF.Y.0009.231126T1700Z-231126T1900Z/
/O.CON.KEKA.BH.S.0010.000000T0000Z-231127T0300Z/
Northern Humboldt Coast-
607 PM PST Sat Nov 25 2023

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT THROUGH SUNDAY
EVENING...
...COASTAL FLOOD ADVISORY IN EFFECT FROM 9 AM TO 11 AM PST
SUNDAY...

* WHAT...For the Coastal Flood Advisory, High astronomical tides
  will cause minor flooding in low lying areas around the Humboldt
  Bay, particularly in King Salmon and Jackson Ranch Road in
  Arcata Bottoms. For the Beach Hazards Statement, increased 
  threat of sneaker waves expected.

* WHERE...Northern Humboldt Coast County.

* WHEN...For the Coastal Flood Advisory, from 9 AM to 11 AM PST 
  Sunday. For the Beach Hazards Statement, through Sunday 
  evening.. .

* IMPACTS...Flooding of lots, parks, and roads with only 
  isolated road closures expected. 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...

A Coastal Flood Advisory indicates that onshore winds and tides
will combine to generate flooding of low areas along the shore.

Feet Above Ground is locally defined as feet above the Highest
Astronomical Tide or HAT.

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.

&&

$$

CAZ101-104-109-261015-
/O.CON.KEKA.BH.S.0010.000000T0000Z-231127T0300Z/
Coastal Del Norte-Southwestern Humboldt-Mendocino Coast-
607 PM PST Sat Nov 25 2023

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT THROUGH SUNDAY
EVENING...

* WHAT...Increased threat of sneaker waves expected.

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

* WHEN...Through Sunday evening.. .

* IMPACTS...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...

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.

&&

$$
237 
WHUS46 KEKA 260618
CFWEKA

Coastal Hazard Message
National Weather Service Eureka CA
1018 PM PST Sat Nov 25 2023

CAZ103-261430-
/O.CON.KEKA.CF.Y.0009.231126T1700Z-231126T1900Z/
/O.CON.KEKA.BH.S.0010.000000T0000Z-231127T0300Z/
Northern Humboldt Coast-
1018 PM PST Sat Nov 25 2023

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT THROUGH SUNDAY
EVENING...
...COASTAL FLOOD ADVISORY REMAINS IN EFFECT FROM 9 AM TO 11 AM
PST SUNDAY...

* WHAT...For the Coastal Flood Advisory, High astronomical tides
  will cause minor flooding in low lying areas around the Humboldt
  Bay, particularly in King Salmon and Jackson Ranch Road in
  Arcata Bottoms. For the Beach Hazards Statement, increased 
  threat of sneaker waves expected.

* WHERE...Northern Humboldt Coast County.

* WHEN...For the Coastal Flood Advisory, from 9 AM to 11 AM PST 
  Sunday. For the Beach Hazards Statement, through Sunday 
  evening.. .

* IMPACTS...Flooding of lots, parks, and roads with only 
  isolated road closures expected. 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...

A Coastal Flood Advisory indicates that onshore winds and tides
will combine to generate flooding of low areas along the shore.

Feet Above Ground is locally defined as feet above the Highest
Astronomical Tide or HAT.

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.

&&

$$

CAZ101-104-109-261430-
/O.CON.KEKA.BH.S.0010.000000T0000Z-231127T0300Z/
Coastal Del Norte-Southwestern Humboldt-Mendocino Coast-
1018 PM PST Sat Nov 25 2023

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT THROUGH SUNDAY
EVENING...

* WHAT...Increased threat of sneaker waves expected.

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

* WHEN...Through Sunday evening.. .

* IMPACTS...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...

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.

&&

$$
364 
WHUS46 KEKA 261009
CFWEKA

Coastal Hazard Message
National Weather Service Eureka CA
209 AM PST Sun Nov 26 2023

CAZ103-261815-
/O.CON.KEKA.CF.Y.0009.231126T1700Z-231126T1900Z/
/O.CON.KEKA.BH.S.0010.000000T0000Z-231127T0300Z/
Northern Humboldt Coast-
209 AM PST Sun Nov 26 2023

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT THROUGH THIS
EVENING...
...COASTAL FLOOD ADVISORY REMAINS IN EFFECT FROM 9 AM TO 11 AM
PST THIS MORNING...

* WHAT...For the Coastal Flood Advisory, High astronomical tides
  will cause minor flooding in low lying areas around the Humboldt
  Bay, particularly in King Salmon and Jackson Ranch Road in
  Arcata Bottoms. For the Beach Hazards Statement, increased 
  threat of sneaker waves expected.

* WHERE...Northern Humboldt Coast County.

* WHEN...For the Coastal Flood Advisory, from 9 AM to 11 AM PST 
  Sunday. For the Beach Hazards Statement, through Sunday 
  evening.. .

* IMPACTS...Flooding of lots, parks, and roads with only isolated
  road closures expected. 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...

A Coastal Flood Advisory indicates that onshore winds and tides
will combine to generate flooding of low areas along the shore.

Feet Above Ground is locally defined as feet above the Highest
Astronomical Tide or HAT.

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.

&&

$$

CAZ101-104-109-261815-
/O.CON.KEKA.BH.S.0010.000000T0000Z-231127T0300Z/
Coastal Del Norte-Southwestern Humboldt-Mendocino Coast-
209 AM PST Sun Nov 26 2023

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT THROUGH THIS
EVENING...

* WHAT...Increased threat of sneaker waves expected.

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

* WHEN...Through this evening.. .

* IMPACTS...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...

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.

&&

$$
753 
WHUS46 KEKA 261816
CFWEKA

Coastal Hazard Message
National Weather Service Eureka CA
1016 AM PST Sun Nov 26 2023

CAZ103-270230-
/O.CAN.KEKA.CF.Y.0009.000000T0000Z-231126T1900Z/
/O.CON.KEKA.BH.S.0010.000000T0000Z-231127T0300Z/
Northern Humboldt Coast-
1016 AM PST Sun Nov 26 2023

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT UNTIL 7 PM PST THIS
EVENING...
...COASTAL FLOOD ADVISORY IS CANCELLED...

* WHAT...Increased threat of sneaker waves expected.

* WHERE...Northern Humboldt Coast County.

* WHEN...Until 7 PM PST this evening.. .

* IMPACTS...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...

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.

&&

$$

CAZ101-104-109-270230-
/O.CON.KEKA.BH.S.0010.000000T0000Z-231127T0300Z/
Coastal Del Norte-Southwestern Humboldt-Mendocino Coast-
1016 AM PST Sun Nov 26 2023

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT UNTIL 7 PM PST THIS
EVENING...

* WHAT...Increased threat of sneaker waves expected.

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

* WHEN...Until 7 PM PST this evening.. .

* IMPACTS...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...

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.

&&

$$
100 
WHUS46 KEKA 270255
CFWEKA

Coastal Hazard Message
National Weather Service Eureka CA
655 PM PST Sun Nov 26 2023

CAZ101-103-104-109-270400-
/O.EXP.KEKA.BH.S.0010.000000T0000Z-231127T0300Z/
Coastal Del Norte-Northern Humboldt Coast-Southwestern Humboldt-
Mendocino Coast-
655 PM PST Sun Nov 26 2023

...BEACH HAZARDS STATEMENT WILL EXPIRE AT 7 PM PST THIS EVENING...


$$

The office that day

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

IssuedProductOfficeCountiesLasted
Nov 23, 4:49 AM PSTFreeze WatchEKADel Norte, Humboldt9 hr
Nov 23, 1:34 PM PSTFrost AdvisoryEKADel Norte, Humboldt, Mendocino19 hr
Nov 23, 2:09 PM PSTFreeze WarningEKADel Norte, Humboldt19 hr

Nearby

Beach Hazards Statements in California, 2023Every beach hazards statement in 2023

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.