Alert archive / California / High Surf Warnings in 2019

High Surf Warning 1, NWS Eureka, CA

January 15, 2019Del Norte County, Humboldt County, Mendocino County, California

NWS Eureka, CA issued this high surf warning at Jan 15, 2019, 2:23 PM PST for Del Norte County, Humboldt County, Mendocino County, California. It took effect at Jan 17, 2019, 5:00 AM PST. It was in force for 15 hr. 17 reports came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued
Jan 15, 2019, 2:23 PM PST (22:23 UTC)
In effect from
Jan 17, 2019, 5:00 AM PST
Expired
Jan 17, 2019, 8:22 PM 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 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.

What was reported inside it

TimeReportWhereRemark
Jan 17, 7:20 AM PSTHAIL 0.25Mckinleyville, CAFACEBOOK REPORT AND PICTURE OF HAIL LESS THAN 0.50 INCHES. HAIL ALSO DAMAGED THIN COVERING OF GREENHOUSE. LOCATION IS APPROXIMATED.
Jan 17, 7:22 AM PSTHAIL 0.251 Nw Mckinleyville, CASMALL HAIL QUICKLY FELL FOR A FEW MINUTES WITH AREA ROADWAYS AND PARKING LOTS COMPLETELY COVERED.
Jan 17, 7:22 AM PSTHAIL 0.251 Nw Mckinleyville, CA
Jan 17, 7:30 AM PSTHIGH SURF1 Wsw Shelter Cove, CATIME ESTIMATED: 8 HOUSES WERE DAMAGED ALONG LOWER PACIFIC DR. DAMAGE SEVERITY VARIED AMONG THE HOUSES. NUMEROUS WINDOWS AND GLASS DOORS WERE BROKEN LEADING TO WATER ENTERING SOME OF THE STRUCTURES, FENCES AND DECKS WERE DESTROYED, AND PROPANE TANKS WERE DISLOD
Jan 17, 7:51 AM PSTHAIL 0.251 Nw Mckinleyville, CASMALL HAIL BRIEFLY MIXED WITH HEAVY RAIN (15 SECONDS MAX). DID NOT ACCUMULATE ON ROADWAYS.
Jan 17, 7:51 AM PSTHAIL 0.251 Nw Mckinleyville, CA
Jan 17, 11:00 AM PSTHAIL 0.251 E Fairhaven, CAPERIODIC HAIL IN THE THUNDERSTORM FROM 11:00 THROUGH 11:15 IN THIS GENERAL AREA. MIXED WITH RAIN.
Jan 17, 11:00 AM PSTHAIL 0.25Cutten, CA
Jan 17, 11:09 AM PSTHAIL 0.252 Nne Arcata, CA
Jan 17, 11:10 AM PSTHAIL 0.25Eureka, CATRACE ACCUMULATION ON GROUND. DURATION OF 10 MINUTES.
Jan 17, 12:23 PM PSTHAIL 0.25Cutten, CAFACEBOOK REPORT AND PICTURE OF HAILSTONE MEASURING 0.40 INCHES.
Jan 17, 12:46 PM PSTHAIL 0.25Bayview, CATWITTER REPORT AND PICTURE OF ACCUMULATING SMALL HAIL.
Jan 17, 2:20 PM PSTSNOW 35 W Willow Creek, CALOCATION AND TIME ESTIMATED: REPORT OF 3 INCHES OF SNOW ON TITLOW HILL RD HOWEVER NO ELEVATION WAS GIVEN.
Jan 17, 2:20 PM PSTSNOW 48 Sw Hoopa, CALOCATION AND TIME ESTIMATED: 4 INCHES OF NEW SNOW ON BAIR RD. HOWEVER NO ELEVATION WAS GIVEN.
Jan 17, 6:39 PM PSTSNOW 35 W Willow Creek, CALOCATION ESTIMATED: REPORT OF 3 INCHES OF SNOW ON TITLOW HILL RD HOWEVER NO ELEVATION WAS GIVEN.
Jan 17, 6:54 PM PSTHAIL 11 Nnw Crescent City, CASEVERAL FACEBOOK PHOTOS OF LARGE HAIL ONE OF WHICH WAS COMPARED WITH A QUARTER. SMALLER SIZED HAIL WAS ALSO COVERING THE GROUND. TIME ESTIMATED FROM RADAR.
Jan 17, 8:00 PM PSTHEAVY RAIN 6.921 Nw Honeydew, CA48 HOUR STORM TOTAL RAINFALL FROM MESONET STATION HONC1.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Medford/Jackson, OR (KMFR), launched 12:00Z, 10.4 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 2019-01-15Temperature 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 2019-01-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 104 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
1876 m above ground
0-6 km bulk shear
33 kt
0-1 km storm-relative helicity
104 m²/s²
0-3 km storm-relative helicity
95 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

461 
WHUS46 KEKA 152223
CFWEKA

Coastal Hazard Message
National Weather Service Eureka CA
223 PM PST Tue Jan 15 2019

CAZ101-103-104-109-161230-
/O.NEW.KEKA.SU.W.0001.190117T1300Z-190118T0700Z/
Coastal Del Norte-Northern Humboldt Coast-Southwestern Humboldt-
Mendocino Coast-
223 PM PST Tue Jan 15 2019

...HIGH SURF WARNING IN EFFECT FROM 5 AM TO 11 PM THURSDAY...

* WAVES AND SURF...Breaking waves rapidly building to over 30 feet
  with the highest surf along west and southwest facing beaches.

* TIMING...Early Thursday morning into Thursday night.

* IMPACTS...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. Minor coastal flooding is
  possible during the morning high tide on Thursday between 700 AM
  and 900 AM.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A High Surf Warning indicates that dangerous, battering waves
will pound the shoreline resulting in beach erosion. Stay far
back from the surf and do not enter areas flooded by the waves.

$$
8 follow-up statements
590 
WHUS46 KEKA 161217
CFWEKA

Coastal Hazard Message
National Weather Service Eureka CA
417 AM PST Wed Jan 16 2019

CAZ101-103-104-109-162030-
/O.EXT.KEKA.SU.W.0001.190117T1300Z-190118T1300Z/
Coastal Del Norte-Northern Humboldt Coast-Southwestern Humboldt-
Mendocino Coast-
417 AM PST Wed Jan 16 2019

...HIGH SURF WARNING NOW IN EFFECT FROM 5 AM THURSDAY TO 5 AM PST
FRIDAY...

* WAVES AND SURF...Breaking waves rapidly building to over 30 
  feet with the highest surf along west and southwest facing 
  beaches. 

* TIMING...Early Thursday morning through Thursday night.

* IMPACTS...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. Minor coastal flooding is
  possible during the morning high tide on Thursday between 700 AM
  and 900 AM, as well as the Friday morning high tide between 800
  AM and 1000 AM. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A High Surf Warning indicates that dangerous, battering waves
will pound the shoreline resulting in beach erosion. Stay far
back from the surf and do not enter areas flooded by the waves.

$$
426 
WHUS46 KEKA 162030
CFWEKA

Coastal Hazard Message
National Weather Service Eureka CA
1230 PM PST Wed Jan 16 2019

CAZ101-103-104-109-171200-
/O.CON.KEKA.SU.W.0001.190117T1300Z-190118T1300Z/
Coastal Del Norte-Northern Humboldt Coast-Southwestern Humboldt-
Mendocino Coast-
1230 PM PST Wed Jan 16 2019

...HIGH SURF WARNING REMAINS IN EFFECT FROM 5 AM THURSDAY TO 5 AM
FRIDAY...

* WAVES AND SURF...Breaking waves rapidly building to over 30 
  feet with the highest surf along west and southwest facing 
  beaches. 

* TIMING...Early Thursday morning through Thursday night.

* IMPACTS...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. Minor 
  coastal flooding is possible during the morning high tide on 
  Thursday between 700 AM and 900 AM, as well as the Friday 
  morning high tide between 800 AM and 1000 AM. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A High Surf Warning indicates that dangerous, battering waves
will pound the shoreline resulting in beach erosion. Stay far
back from the surf and do not enter areas flooded by the waves.

$$
881 
WHUS46 KEKA 170641
CFWEKA

Coastal Hazard Message
National Weather Service Eureka CA
1041 PM PST Wed Jan 16 2019

CAZ103-171445-
/O.NEW.KEKA.CF.Y.0002.190117T1500Z-190117T1700Z/
/O.CON.KEKA.SU.W.0001.190117T1300Z-190118T1300Z/
Northern Humboldt Coast-
1041 PM PST Wed Jan 16 2019

...HIGH SURF WARNING REMAINS IN EFFECT FROM 5 AM THURSDAY TO 5 AM
PST FRIDAY...
...COASTAL FLOOD ADVISORY IN EFFECT FROM 7 AM TO 9 AM PST
THURSDAY...

* SURF TIMING...Early Thursday morning through Thursday night.

* SURF IMPACTS...Large breaking waves over 30 feet will occur
  along the coast leading to increased wave run-up on beaches with
  waves topping and washing over large rocks and jetties. Waves
  may also wash over local area roads so use caution while driving
  near the surf zone. 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. 

* COASTAL FLOODING IMPACTS...High astronomical tides will cause
  minor flooding in low lying areas around Humboldt Bay. The water
  level is expected to peak between 8.7 and 9.2 feet MLLW at the 
  north spit tide gauge. Low lying areas will experience minor 
  flooding including...but not limited to...roadways in King 
  Salmon and the Arcata bottoms as well as New Navy Base Road.

* COASTAL FLOODING TIMING...High tide is at 7:51 AM at the 
  Humboldt Bay north spit tide gauge. Flooding may begin an hour 
  before or continue for an hour or two after high tide.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

A High Surf Warning indicates that dangerous, battering waves
will pound the shoreline resulting in beach erosion. Stay far
back from the surf and do not enter areas flooded by the waves.

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

&&

$$

CAZ101-104-109-171445-
/O.CON.KEKA.SU.W.0001.190117T1300Z-190118T1300Z/
Coastal Del Norte-Southwestern Humboldt-Mendocino Coast-
1041 PM PST Wed Jan 16 2019

...HIGH SURF WARNING REMAINS IN EFFECT FROM 5 AM THURSDAY TO 5 AM
PST FRIDAY...

* WAVES AND SURF...Breaking waves rapidly building to over 30 
  feet with the highest surf along west and southwest facing 
  beaches. 

* TIMING...Early Thursday morning through Thursday night.

* IMPACTS...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. Minor 
  coastal flooding is possible during the morning high tide on 
  Thursday between 700 AM and 900 AM, as well as the Friday 
  morning high tide between 800 AM and 1000 AM. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A High Surf Warning indicates that dangerous, battering waves
will pound the shoreline resulting in beach erosion. Stay far
back from the surf and do not enter areas flooded by the waves.

$$
405 
WHUS46 KEKA 171047
CFWEKA

Coastal Hazard Message
National Weather Service Eureka CA
247 AM PST Thu Jan 17 2019


CAZ103-171900-
/O.CON.KEKA.SU.W.0001.190117T1300Z-190118T1300Z/
/O.CON.KEKA.CF.Y.0002.190117T1500Z-190117T1700Z/
Northern Humboldt Coast-
247 AM PST Thu Jan 17 2019

...HIGH SURF WARNING REMAINS IN EFFECT UNTIL 5 AM PST FRIDAY...
...COASTAL FLOOD ADVISORY REMAINS IN EFFECT FROM 7 AM TO 9 AM PST
THIS MORNING...

* SURF TIMING...Early Thursday morning through Thursday night.

* SURF IMPACTS...Large breaking waves over 30 feet will occur
  along the coast leading to increased wave run-up on beaches with
  waves topping and washing over large rocks and jetties. Waves
  may also wash over local area roads so use caution while driving
  near the surf zone. 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. 

* COASTAL FLOODING IMPACTS...High astronomical tides will cause
  minor flooding in low lying areas around Humboldt Bay. The water
  level is expected to peak between 8.7 and 9.2 feet MLLW at the 
  north spit tide gauge. Low lying areas will experience minor 
  flooding including...but not limited to...roadways in King 
  Salmon and the Arcata bottoms as well as New Navy Base Road.

* COASTAL FLOODING TIMING...High tide is at 7:51 AM at the 
  Humboldt Bay north spit tide gauge. Flooding may begin an hour 
  before or continue for an hour or two after high tide.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A High Surf Warning indicates that dangerous, battering waves
will pound the shoreline resulting in beach erosion. Stay far
back from the surf and do not enter areas flooded by the waves.

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

&&

$$

CAZ101-104-109-171900-
/O.CON.KEKA.SU.W.0001.190117T1300Z-190118T1300Z/
Coastal Del Norte-Southwestern Humboldt-Mendocino Coast-
247 AM PST Thu Jan 17 2019

...HIGH SURF WARNING REMAINS IN EFFECT UNTIL 5 AM PST FRIDAY...

* WAVES AND SURF...Breaking waves rapidly building to over 30 
  feet with the highest surf along west and southwest facing 
  beaches. 

* TIMING...Early Thursday morning through Thursday night.

* IMPACTS...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. Minor 
  coastal flooding is possible during the morning high tide on 
  Thursday between 700 AM and 900 AM, as well as the Friday 
  morning high tide between 800 AM and 1000 AM. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A High Surf Warning indicates that dangerous, battering waves
will pound the shoreline resulting in beach erosion. Stay far
back from the surf and do not enter areas flooded by the waves.

$$
301 
WHUS46 KEKA 171606
CFWEKA

URGENT - IMMEDIATE BROADCAST REQUESTED
Coastal Hazard Message
National Weather Service Eureka CA
806 AM PST Thu Jan 17 2019

CAZ109-180015-
/O.NEW.KEKA.CF.W.0001.190117T1606Z-190117T1800Z/
/O.CON.KEKA.SU.W.0001.000000T0000Z-190118T1300Z/
Mendocino Coast-
806 AM PST Thu Jan 17 2019

...COASTAL FLOOD WARNING IN EFFECT UNTIL 10 AM THIS MORNING...
...HIGH SURF WARNING REMAINS IN EFFECT UNTIL 5 AM FRIDAY...

The National Weather Service in Eureka has issued a Coastal Flood
Warning...which is in effect until 10 AM this morning. 

* WAVES AND SURF...Breaking waves rapidly building to over 30 
  feet with the highest surf along west and southwest facing 
  beaches. 

* TIMING...Through tonight.

* COASTAL FLOODING...High astronomical tides will cause flooding
  in low-lying areas along the Mendocino. The water level is
  peaking between 8.5 and 9.0 feet MLLW at the Arena Cove tide 
  gauge.

* TIMING...High tide was at 7:01 AM at the Arena Cove tide gauge.
  Flooding may continue for a few hours after high tide.

* IMPACTS...Low lying areas will experience minor flooding
  including.

* IMPACTS...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. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Coastal Flood Warning means that flooding is occurring or
imminent. Coastal residents in the warned area should be alert
for rising water, and take appropriate action to protect life and
property.

A High Surf Warning indicates that dangerous, battering waves
will pound the shoreline resulting in beach erosion. Stay far
back from the surf and do not enter areas flooded by the waves.

$$

CAZ103-180015-
/O.CON.KEKA.SU.W.0001.000000T0000Z-190118T1300Z/
/O.CON.KEKA.CF.Y.0002.000000T0000Z-190117T1700Z/
Northern Humboldt Coast-
806 AM PST Thu Jan 17 2019

...HIGH SURF WARNING REMAINS IN EFFECT UNTIL 5 AM FRIDAY... 
...COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 9 AM THIS 
MORNING...

* SURF TIMING...Through tonight.

* SURF IMPACTS...Large breaking waves over 30 feet will occur 
  along the coast leading to increased wave run-up on beaches 
  with waves topping and washing over large rocks and jetties. 
  Waves may also wash over local area roads so use caution while 
  driving near the surf zone. 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. 

* COASTAL FLOODING IMPACTS...High astronomical tides will cause 
  minor flooding in low lying areas around Humboldt Bay. The 
  water level is expected to peak between 8.7 and 9.2 feet MLLW 
  at the north spit tide gauge. Low lying areas will experience 
  minor flooding including...but not limited to...roadways in 
  King Salmon and the Arcata bottoms as well as New Navy Base 
  Road. 

* COASTAL FLOODING TIMING...High tide is at 7:51 AM at the
  Humboldt Bay North Spit tide gauge. Flooding may begin an hour 
  before or continue for an hour or two after high tide. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A High Surf Warning indicates that dangerous, battering waves
will pound the shoreline resulting in beach erosion. Stay far
back from the surf and do not enter areas flooded by the waves.

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

$$

CAZ101-104-180015-
/O.CON.KEKA.SU.W.0001.000000T0000Z-190118T1300Z/
Coastal Del Norte-Southwestern Humboldt-
806 AM PST Thu Jan 17 2019

...HIGH SURF WARNING REMAINS IN EFFECT UNTIL 5 AM FRIDAY...

* WAVES AND SURF...Breaking waves rapidly building to over 30 
  feet with the highest surf along west and southwest facing 
  beaches. 

* TIMING...Through tonight.

* IMPACTS...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. Minor 
  coastal flooding is possible during the morning high tide on 
  Thursday between 700 AM and 900 AM, as well as the Friday 
  morning high tide between 800 AM and 1000 AM. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A High Surf Warning indicates that dangerous, battering waves
will pound the shoreline resulting in beach erosion. Stay far
back from the surf and do not enter areas flooded by the waves.

$$
419 
WHUS46 KEKA 171802
CFWEKA

Coastal Hazard Message
National Weather Service Eureka CA
1002 AM PST Thu Jan 17 2019

CAZ109-180215-
/O.EXP.KEKA.CF.W.0001.000000T0000Z-190117T1800Z/
/O.CON.KEKA.SU.W.0001.000000T0000Z-190118T1300Z/
Mendocino Coast-
1002 AM PST Thu Jan 17 2019

...HIGH SURF WARNING REMAINS IN EFFECT UNTIL 5 AM FRIDAY...
...COASTAL FLOOD WARNING HAS EXPIRED...

* WAVES AND SURF...Breaking waves over 30 feet with the highest 
  surf along west and southwest facing beaches.

* TIMING...Through tonight.

* IMPACTS...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. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A High Surf Warning indicates that dangerous, battering waves
will pound the shoreline resulting in beach erosion. Stay far
back from the surf and do not enter areas flooded by the waves.

$$

CAZ101-103-104-180215-
/O.CON.KEKA.SU.W.0001.000000T0000Z-190118T1300Z/
Coastal Del Norte-Northern Humboldt Coast-Southwestern Humboldt-
1002 AM PST Thu Jan 17 2019

...HIGH SURF WARNING REMAINS IN EFFECT UNTIL 5 AM FRIDAY...

* WAVES AND SURF...Breaking waves over 30 feet with the highest 
  surf along west and southwest facing beaches. 

* TIMING...Through tonight.

* IMPACTS...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. Minor coastal flooding is
  possible during the Friday morning high tide between 800 AM and
  1000 AM. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A High Surf Warning indicates that dangerous, battering waves
will pound the shoreline resulting in beach erosion. Stay far
back from the surf and do not enter areas flooded by the waves.

$$
982 
WHUS46 KEKA 180216
CFWEKA

Coastal Hazard Message
National Weather Service Eureka CA
616 PM PST Thu Jan 17 2019

CAZ101-103-104-109-181215-
/O.CON.KEKA.SU.W.0001.000000T0000Z-190118T1300Z/
Coastal Del Norte-Northern Humboldt Coast-Southwestern Humboldt-
Mendocino Coast-
616 PM PST Thu Jan 17 2019

...HIGH SURF WARNING REMAINS IN EFFECT UNTIL 5 AM PST FRIDAY...

* WAVES AND SURF...Breaking waves of 20 to 25 feet with the 
  highest surf along west and southwest facing beaches. 

* TIMING...Through tonight.

* IMPACTS...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. 

* Minor coastal flooding is possible during the Friday morning 
  high tide between 800 AM and 1000 AM. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A High Surf Warning indicates that dangerous, battering waves
will pound the shoreline resulting in beach erosion. Stay far
back from the surf and do not enter areas flooded by the waves.

$$
626 
WHUS46 KEKA 180422
CFWEKA

Coastal Hazard Message
National Weather Service Eureka CA
822 PM PST Thu Jan 17 2019

CAZ101-103-104-109-181230-
/O.CAN.KEKA.SU.W.0001.000000T0000Z-190118T1300Z/
/O.NEW.KEKA.SU.Y.0002.190118T0422Z-190118T1300Z/
Coastal Del Norte-Northern Humboldt Coast-Southwestern Humboldt-
Mendocino Coast-
822 PM PST Thu Jan 17 2019

...HIGH SURF ADVISORY IN EFFECT UNTIL 5 AM PST FRIDAY...
...HIGH SURF WARNING IS CANCELLED...

The National Weather Service in Eureka has issued a High Surf
Advisory...which is in effect until 5 AM PST Friday. The High
Surf Warning has been cancelled. 

* WAVES AND SURF...Breaking waves have diminished to 20 to 25 
  feet with the highest surf along west and southwest facing 
  beaches. 

* TIMING...The waves will continue to diminish tonight.

* IMPACTS...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. 

* Marine IMPACTS...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.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A High Surf Advisory means that high surf will affect beaches in
the advisory area, producing rip currents and localized beach
erosion.

&&

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Jan 15, 3:29 AM PSTSmall Craft AdvisoryEKA30 hr
Jan 15, 4:08 AM PSTWind AdvisoryEKADel Norte, Humboldt, Mendocino, Trinity52 hr
Jan 15, 9:15 AM PSTFlood WatchEKAHumboldt, Mendocino, Trinity55 hr
Jan 15, 9:42 AM PSTGale WarningEKA50 hr
Jan 15, 9:42 AM PSTHazardous Seas WatchEKA17 hr
Jan 15, 1:59 PM PSTSmall Craft AdvisoryEKA25 hr

Nearby

High Surf Warnings in California, 2019Every high surf warning in 2019

Sources

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