Alert archive / California / Beach Hazards Statements in 2022

Beach Hazards Statement 9, NWS Eureka, CA

November 22, 2022Del Norte County, Humboldt County, Mendocino County, California

NWS Eureka, CA issued this beach hazards statement at Nov 22, 2022, 4:39 AM PST for Del Norte County, Humboldt County, Mendocino County, California. It took effect at Nov 24, 2022, 10:00 AM PST. It was in force for 15 hr.

The area

The counties it named.

The facts

Issued
Nov 22, 2022, 4:39 AM PST (12:39 UTC)
In effect from
Nov 24, 2022, 10:00 AM PST
Expired
Nov 25, 2022, 1:00 AM PST
In force
15 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 12:43 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 12:00Z, 0.7 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 12:00Z on 2022-11-22Temperature 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 12:00Z on 2022-11-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 30 square meters per square second.193958Sfc1 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
1531 m above ground
0-6 km bulk shear
21 kt
0-1 km storm-relative helicity
30 m²/s²
0-3 km storm-relative helicity
5 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

865 
WHUS46 KEKA 221239
CFWEKA

Coastal Hazard Message
National Weather Service Eureka CA
439 AM PST Tue Nov 22 2022

...Long Period Swell Moving in Thursday...

Thursday morning the forerunners of a larger swell are expected to
start to move into the area. Initially these waves are expected to
be around 6 feet at 18 seconds and quickly build to over 10 feet
at 18 seconds by late afternoon.  

CAZ101-103-104-222045-
/O.NEW.KEKA.BH.S.0009.221124T1700Z-221125T1100Z/
Coastal Del Norte-Northern Humboldt Coast-Southwestern Humboldt-
439 AM PST Tue Nov 22 2022

...BEACH HAZARDS STATEMENT IN EFFECT FROM THURSDAY MORNING
THROUGH LATE THURSDAY NIGHT...

* WHAT...Increased risk of sneaker waves. There may be periods of
  smaller waves for 20 to 30 minutes between larger sets of 
  waves.

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

* WHEN...From Thursday morning through late Thursday night.. .

* IMPACTS...Large, unexpected waves can sweep across the beach
  without warning, sweeping people into the sea from rocks,
  jetties, and beaches. 

* ADDITIONAL DETAILS...Sneaker waves occur when a larger set of
  waves occurs after 20 to 30 minutes of smaller waves.

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, jetties and steep beaches. Stay much farther back from the
water and never turn your back on the ocean.

&&

$$

CAZ109-222045-
/O.NEW.KEKA.BH.S.0009.221124T1900Z-221125T1100Z/
Mendocino Coast-
439 AM PST Tue Nov 22 2022

...BEACH HAZARDS STATEMENT IN EFFECT FROM THURSDAY MORNING
THROUGH LATE THURSDAY NIGHT...
* WHAT...Increased risk of sneaker waves. There may be periods of
  smaller waves for 20 to 30 minutes between larger sets of 
  waves.

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

* WHEN...From Thursday morning through late Thursday night.. .

* IMPACTS...Large, unexpected waves can sweep across the beach
  without warning, sweeping people into the sea from rocks,
  jetties, and beaches. 

* ADDITIONAL DETAILS...Sneaker waves occur when a larger set of
  waves occurs after 20 to 30 minutes of smaller waves.

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, jetties and steep beaches. Stay much farther back from the
water and never turn your back on the ocean.

&&

$$
10 follow-up statements
300 
WHUS46 KEKA 221703
CFWEKA

Coastal Hazard Message
National Weather Service Eureka CA
903 AM PST Tue Nov 22 2022



CAZ101-103-104-230115-
/O.CON.KEKA.BH.S.0009.221124T1700Z-221125T1100Z/
Coastal Del Norte-Northern Humboldt Coast-Southwestern Humboldt-
903 AM PST Tue Nov 22 2022

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT FROM THURSDAY
MORNING THROUGH LATE THURSDAY NIGHT...

* WHAT...Large unexpected waves along the coast.

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

* WHEN...From Thursday morning through late Thursday night.. .

* IMPACTS...Large, unexpected waves can sweep across the beach 
  without warning, sweeping people into the sea from rocks, 
  jetties, and beaches. These 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.

&&

$$

CAZ109-230115-
/O.CON.KEKA.BH.S.0009.221124T1900Z-221125T1100Z/
Mendocino Coast-
903 AM PST Tue Nov 22 2022

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT FROM THURSDAY
MORNING THROUGH LATE THURSDAY NIGHT...

* WHAT...Large unexpected waves along the coast.

* WHERE...Mendocino Coast County.

* WHEN...From Thursday morning through late Thursday night.. .

* IMPACTS...Large, unexpected waves can sweep across the beach
  without warning, sweeping people into the sea from rocks,
  jetties, and beaches. These 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.

&&

$$
789 
WHUS46 KEKA 222205
CFWEKA

Coastal Hazard Message
National Weather Service Eureka CA
205 PM PST Tue Nov 22 2022

CAZ101-103-104-230615-
/O.CON.KEKA.BH.S.0009.221124T1700Z-221125T1100Z/
Coastal Del Norte-Northern Humboldt Coast-Southwestern Humboldt-
205 PM PST Tue Nov 22 2022

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT FROM THURSDAY
MORNING THROUGH LATE THURSDAY NIGHT...

* WHAT...Large unexpected waves along the coast.

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

* WHEN...From Thursday morning through late Thursday night.

* IMPACTS...Large, unexpected waves can sweep across the beach 
  without warning, sweeping people into the sea from rocks, 
  jetties, and beaches. These 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.

&&

$$

CAZ109-230615-
/O.CON.KEKA.BH.S.0009.221124T1900Z-221125T1100Z/
Mendocino Coast-
205 PM PST Tue Nov 22 2022

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT FROM THURSDAY
MORNING THROUGH LATE THURSDAY NIGHT...

* WHAT...Large unexpected waves along the coast.

* WHERE...Mendocino Coast County.

* WHEN...From Thursday morning through late Thursday night.

* IMPACTS...Large, unexpected waves can sweep across the beach 
  without warning, sweeping people into the sea from rocks, 
  jetties, and beaches. These 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.

&&

$$
438 
WHUS46 KEKA 230525
CFWEKA

Coastal Hazard Message
National Weather Service Eureka CA
925 PM PST Tue Nov 22 2022

CAZ101-103-104-231330-
/O.CON.KEKA.BH.S.0009.221124T1700Z-221125T1100Z/
Coastal Del Norte-Northern Humboldt Coast-Southwestern Humboldt-
925 PM PST Tue Nov 22 2022

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT FROM THURSDAY
MORNING THROUGH LATE THURSDAY NIGHT...

* WHAT...Large unexpected waves along the coast.

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

* WHEN...From Thursday morning through late Thursday night.. .

* IMPACTS...Large, unexpected waves can sweep across the beach 
  without warning, sweeping people into the sea from rocks, 
  jetties, and beaches. These 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.

&&

$$

CAZ109-231330-
/O.CON.KEKA.BH.S.0009.221124T1900Z-221125T1100Z/
Mendocino Coast-
925 PM PST Tue Nov 22 2022

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT FROM THURSDAY
MORNING THROUGH LATE THURSDAY NIGHT...

* WHAT...Large unexpected waves along the coast.

* WHERE...Mendocino Coast County.

* WHEN...From Thursday morning through late Thursday night.. .

* IMPACTS...Large, unexpected waves can sweep across the beach 
  without warning, sweeping people into the sea from rocks, 
  jetties, and beaches. These 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.

&&

$$
666 
WHUS46 KEKA 231052
CFWEKA

Coastal Hazard Message
National Weather Service Eureka CA
252 AM PST Wed Nov 23 2022

...Long Period Swell Moving in Thursday...

Thursday morning the forerunners of a larger swell are expected to
start to move into the area. Initially these waves are expected to
be around 6 feet at 18 seconds and quickly build to over 10 feet
at 18 seconds by late evening.

CAZ101-103-104-232230-
/O.CON.KEKA.BH.S.0009.221124T1700Z-221125T1100Z/
Coastal Del Norte-Northern Humboldt Coast-Southwestern Humboldt-
252 AM PST Wed Nov 23 2022

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT FROM THURSDAY
MORNING THROUGH LATE THURSDAY NIGHT...

* WHAT...Increased risk of sneaker waves. There may be periods of
  smaller waves for 20 to 30 minutes between larger sets of 
  waves.

* WHERE...Humboldt and Del Norte county coasts.

* WHEN...From late Thursday morning through late Thursday night..
  .

* IMPACTS...Large, unexpected waves can sweep across the beach
  without warning, sweeping people into the sea from rocks,
  jetties, and beaches.

* ADDITIONAL DETAILS...Sneaker waves occur when a larger set of
  waves occurs after 20 to 30 minutes of smaller waves.

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.

&&

$$

CAZ109-232230-
/O.CON.KEKA.BH.S.0009.221124T1900Z-221125T1100Z/
Mendocino Coast-
252 AM PST Wed Nov 23 2022

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT FROM THURSDAY
MORNING THROUGH LATE THURSDAY NIGHT...

* WHAT...Increased risk of sneaker waves. There may be periods of
  smaller waves for 20 to 30 minutes between larger sets of 
  waves.

* WHERE...Mendocino County Coast.

* WHEN...From Thursday morning through late Thursday night.. .

* IMPACTS...Large, unexpected waves can sweep across the beach
  without warning, sweeping people into the sea from rocks,
  jetties, and beaches.

* ADDITIONAL DETAILS...Sneaker waves occur when a larger set of
  waves occurs after 20 to 30 minutes of smaller waves.

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.

&&

$$
218 
WHUS46 KEKA 232225
CFWEKA

Coastal Hazard Message
National Weather Service Eureka CA
225 PM PST Wed Nov 23 2022

...Long Period Swell Moving in Thursday...

Thursday morning the forerunners of a larger swell are expected
to start to move into the area. Initially these waves are
expected to be around 6 feet at 18 seconds and quickly build to
over 10 feet at 18 seconds by late evening.

CAZ101-103-104-109-240630-
/O.EXT.KEKA.BH.S.0009.221124T1800Z-221125T1000Z/
Coastal Del Norte-Northern Humboldt Coast-Southwestern Humboldt-
Mendocino Coast-
225 PM PST Wed Nov 23 2022

...BEACH HAZARDS STATEMENT NOW IN EFFECT FROM THURSDAY MORNING
THROUGH LATE THURSDAY NIGHT...

* WHAT...Large unexpected waves along the coast.

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

* WHEN...From Thursday morning through late Thursday night.. .

* IMPACTS...Large, unexpected waves can sweep across the beach
  without warning, sweeping people into the sea from rocks,
  jetties, and beaches. These 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.

&&

$$
995 
WHUS46 KEKA 240628
CFWEKA

Coastal Hazard Message
National Weather Service Eureka CA
1028 PM PST Wed Nov 23 2022

...Long Period Swell Moving in Thursday...

Thursday morning the forerunners of a long-period swell are 
expected to move into the area. Initially these waves are expected
to be around 6 feet at 18 seconds and quickly build to over 10 
feet at 16 to 18 seconds by late evening.

CAZ101-103-104-109-241430-
/O.CON.KEKA.BH.S.0009.221124T1800Z-221125T1000Z/
Coastal Del Norte-Northern Humboldt Coast-Southwestern Humboldt-
Mendocino Coast-
1028 PM PST Wed Nov 23 2022

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT FROM 10 AM PST
THURSDAY THROUGH LATE THURSDAY NIGHT...

* WHAT...Increased risk of sneaker waves. There may be periods of
  smaller waves for 20 to 30 minutes between larger sets of 
  waves.

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

* WHEN...From 10 AM PST Thursday through late Thursday night.. .

* IMPACTS...Large, unexpected waves can sweep across the beach 
  without warning, sweeping people into the sea from rocks, 
  jetties, and beaches. These 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.

&&

$$
818 
WHUS46 KEKA 241056
CFWEKA

Coastal Hazard Message
National Weather Service Eureka CA
256 AM PST Thu Nov 24 2022

...Long Period Swell Moving in Thursday...

Thursday morning the forerunners of a long-period swell are
expected to move into the area. Initially these waves are
expected to be around 6 feet at 18 seconds and quickly build to
over 10 feet at 16 to 18 seconds by late evening.

CAZ101-103-104-109-242230-
/O.CON.KEKA.BH.S.0009.221124T1800Z-221125T1000Z/
Coastal Del Norte-Northern Humboldt Coast-Southwestern Humboldt-
Mendocino Coast-
256 AM PST Thu Nov 24 2022

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT FROM 10 AM PST THIS
MORNING THROUGH LATE TONIGHT...

* WHAT...Increased risk of sneaker waves. There may be periods 
  of smaller waves for 20 to 30 minutes between larger sets of 
  waves.

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

* WHEN...From 10 AM PST Thursday through late Thursday night.. .

* IMPACTS...Large, unexpected waves can sweep across the beach
  without warning, sweeping people into the sea from rocks,
  jetties, and beaches.

* ADDITIONAL DETAILS...Sneaker waves occur when a larger set of
  waves occurs moves through after up to 30 minutes of smaller 
  waves.

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.

&&

$$
883 
WHUS46 KEKA 242223
CFWEKA

Coastal Hazard Message
National Weather Service Eureka CA
223 PM PST Thu Nov 24 2022

...Long Period Swell Moving in Thursday...

Thursday morning the forerunners of a long-period swell are
expected to move into the area. Initially these waves are
expected to be around 6 feet at 18 seconds and quickly build to
over 10 feet at 16 to 18 seconds by late evening.

CAZ103-250630-
/O.NEW.KEKA.CF.Y.0009.221125T1900Z-221125T2100Z/
/O.EXT.KEKA.BH.S.0009.000000T0000Z-221125T0900Z/
Northern Humboldt Coast-
223 PM PST Thu Nov 24 2022

...BEACH HAZARDS STATEMENT NOW IN EFFECT UNTIL 1 AM PST FRIDAY...
...COASTAL FLOOD ADVISORY IN EFFECT FROM 11 AM TO 1 PM PST
FRIDAY...

* WHAT...For the Coastal Flood Advisory, High astronomical tides
  will cause minor flooding in low lying areas around Humboldt
  Bay. Up to one half foot of saltwater inundation above ground
  level is possible in low lying areas near shorelines and tidal
  waterways (Between 8.8 and 8.9 feet MLLW at the North Spit tide
  gauge). For the Beach Hazards Statement, large unexpected waves
  along the coast.

* WHERE...Northern Humboldt Coast County.

* WHEN...For the Coastal Flood Advisory, from 11 AM to 1 PM PST 
  Friday. For the Beach Hazards Statement, until 1 AM PST 
  Friday.. .

* 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 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.

&&

$$

CAZ101-104-109-250630-
/O.EXT.KEKA.BH.S.0009.000000T0000Z-221125T0900Z/
Coastal Del Norte-Southwestern Humboldt-Mendocino Coast-
223 PM PST Thu Nov 24 2022

...BEACH HAZARDS STATEMENT NOW IN EFFECT UNTIL 1 AM PST FRIDAY...

* WHAT...Large unexpected waves along the coast.

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

* WHEN...Until 1 AM PST Friday.. .

* IMPACTS...Large, unexpected waves can sweep across the beach
  without warning, sweeping people into the sea from rocks,
  jetties, and beaches. These 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.

&&

$$
357 
WHUS46 KEKA 250627
CFWEKA

Coastal Hazard Message
National Weather Service Eureka CA
1027 PM PST Thu Nov 24 2022

...Long Period Swell Moving in Thursday...

Thursday morning the forerunners of a long-period swell are
expected to move into the area. Initially these waves are
expected to be around 6 feet at 18 seconds and quickly build to
over 10 feet at 16 to 18 seconds by late evening.

CAZ103-251430-
/O.CON.KEKA.CF.Y.0009.221125T1900Z-221125T2100Z/
/O.CON.KEKA.BH.S.0009.000000T0000Z-221125T0900Z/
Northern Humboldt Coast-
1027 PM PST Thu Nov 24 2022

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT UNTIL 1 AM PST
FRIDAY...
...COASTAL FLOOD ADVISORY REMAINS IN EFFECT FROM 11 AM TO 1 PM
PST FRIDAY...

* WHAT...For the Coastal Flood Advisory, High astronomical tides
  will cause minor flooding in low lying areas around Humboldt
  Bay. Up to a half foot of saltwater inundation above ground 
  level is possible in low lying areas near shorelines and tidal 
  waterways (Between 8.8 and 8.9 feet MLLW at the North Spit tide 
  gauge). For the Beach Hazards Statement, large unexpected waves 
  along the coast.

* WHERE...Northern Humboldt Coast County.

* WHEN...For the Coastal Flood Advisory, from 11 AM to 1 PM PST 
  Friday. For the Beach Hazards Statement, until 1 AM PST 
  Friday.. .

* 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 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.

&&

$$

CAZ101-104-109-250900-
/O.CON.KEKA.BH.S.0009.000000T0000Z-221125T0900Z/
Coastal Del Norte-Southwestern Humboldt-Mendocino Coast-
1027 PM PST Thu Nov 24 2022

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT UNTIL 1 AM PST
FRIDAY...

* WHAT...Large unexpected waves along the coast.

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

* WHEN...Until 1 AM PST Friday.. .

* IMPACTS...Large, unexpected waves can sweep across the beach 
  without warning, sweeping people into the sea from rocks, 
  jetties, and beaches. These 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.

&&

$$
541 
WHUS46 KEKA 250908
CFWEKA

Coastal Hazard Message
National Weather Service Eureka CA
108 AM PST Fri Nov 25 2022

CAZ103-252100-
/O.EXP.KEKA.BH.S.0009.000000T0000Z-221125T0900Z/
/O.CON.KEKA.CF.Y.0009.221125T1900Z-221125T2100Z/
Northern Humboldt Coast-
108 AM PST Fri Nov 25 2022

...COASTAL FLOOD ADVISORY REMAINS IN EFFECT FROM 11 AM THIS
MORNING TO 1 PM PST THIS AFTERNOON...
...BEACH HAZARDS STATEMENT HAS EXPIRED...

* WHAT...High astronomical tides will cause minor flooding in low
  lying areas along the Redwood Coast. Up to one half foot of
  saltwater inundation above ground level is possible in low lying
  areas near shorelines and tidal waterways (Between 8.8 and 8.9
  feet MLLW at the north spit tide gauge).

* WHERE...Northern Humboldt Coast County.

* WHEN...For the Coastal Flood Advisory, from 11 AM to 1 PM PST
  Friday. 

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

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.

&&

$$

CAZ101-104-109-251015-
/O.EXP.KEKA.BH.S.0009.000000T0000Z-221125T0900Z/
Coastal Del Norte-Southwestern Humboldt-Mendocino Coast-
108 AM PST Fri Nov 25 2022

...BEACH HAZARDS STATEMENT HAS EXPIRED...

Set behavior and the threat for sneaker waves continues, but will
be less pronounced that earlier.


$$

Nearby

Beach Hazards Statements in California, 2022Every beach hazards statement in 2022

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.