Alert archive / California / Beach Hazards Statements in 2018

Beach Hazards Statement 2, NWS Eureka, CA

January 12, 2018Del Norte County, Humboldt County, Mendocino County, California

NWS Eureka, CA issued this beach hazards statement at Jan 12, 2018, 3:48 AM PST for Del Norte County, Humboldt County, Mendocino County, California. It took effect at Jan 14, 2018, 8:00 AM PST. It was in force for 11 hr.

The area

The counties it named.

The facts

Issued
Jan 12, 2018, 3:48 AM PST (11:48 UTC)
In effect from
Jan 14, 2018, 8:00 AM PST
Expired
Jan 14, 2018, 7:00 PM PST
In force
11 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 11:50 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, 11.8 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 2018-01-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 37 joules per kilogram.LCLLFCEL10008507005003002001001 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 2018-01-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 338 square meters per square second.1939587897117136Sfc1 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
37 J/kg
Mixed-layer CIN
-20 J/kg
Mixed-layer LCL
834 m above ground
0-6 km bulk shear
108 kt
0-1 km storm-relative helicity
338 m²/s²
0-3 km storm-relative helicity
549 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

883 
WHUS46 KEKA 121148
CFWEKA

Coastal Hazard Message
National Weather Service Eureka CA
348 AM PST Fri Jan 12 2018

...Enhanced Sneaker Wave conditions will be present on Sunday as 
pleasant weather will coincided with the arrival of a long period 
westerly swell to the northwest California coastline. The ocean 
environment may be deceivingly calm on Sunday however visitors to 
beaches...jetty's and rock outcroppings should exercise extreme 
caution due to the increased threat of Sneaker Waves... 

CAZ101-103-104-109-122315-
/O.NEW.KEKA.BH.S.0002.180114T1600Z-180115T0300Z/
Coastal Del Norte-Northern Humboldt Coast-Southwestern Humboldt-
Mendocino Coast-
348 AM PST Fri Jan 12 2018

...BEACH HAZARDS STATEMENT IN EFFECT FROM SUNDAY MORNING THROUGH
SUNDAY EVENING...

The National Weather Service in Eureka has issued a Beach Hazards
Statement...which is in effect from Sunday morning through Sunday
evening. 

* TIMING...The risk for sneaker waves will be very high on Sunday.

* IMPACTS...Larger surf at offshore breaks and an enhanced risk 
  of sneaker waves on northwest California beaches. Steep 
  beaches will have a higher risk of sneaker wave activity with 
  greater wave run-up onto beaches. Large waves will also wash 
  over jetties and rock outcroppings that may normally stay dry.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A beach hazards statement is issued when threats such as sneaker
waves create life-threatening conditions in the surf zone.
Caution should be used when in or near the water. Never turn your
back to the ocean!

&&

$$

TONKIN
5 follow-up statements
457 
WHUS46 KEKA 122236
CFWEKA

Coastal Hazard Message
National Weather Service Eureka CA
236 PM PST Fri Jan 12 2018

.OVERVIEW...Enhanced sneaker wave conditions will be present on 
Sunday as pleasant weather will coincide with the arrival of a 
long period westerly swell along the northwest California 
coastline. The ocean environment may be deceivingly calm on 
Sunday. However, visitors to beaches, jetties, and rock 
outcroppings should exercise extreme caution due to the increased 
threat of sneaker waves.

CAZ101-103-104-109-131245-
/O.CON.KEKA.BH.S.0002.180114T1600Z-180115T0300Z/
Coastal Del Norte-Northern Humboldt Coast-Southwestern Humboldt-
Mendocino Coast-
236 PM PST Fri Jan 12 2018

...HIGH RISK OF SNEAKER WAVES FROM SUNDAY MORNING THROUGH SUNDAY 
EVENING...

* TIMING...The risk for sneaker waves will be very high on 
  Sunday.

* IMPACTS...Larger surf at offshore breaks and an enhanced risk 
  of sneaker waves on northwest California beaches. Steep 
  beaches will have a higher risk of sneaker wave activity with 
  greater wave run-up onto beaches. Large waves will also wash 
  over jetties and rock outcroppings that may normally stay dry. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A beach hazards statement is issued when threats such as sneaker
waves create life-threatening conditions in the surf zone.
Caution should be used when in or near the water. Never turn your
back to the ocean!

$$
784 
WHUS46 KEKA 130646
CFWEKA

Coastal Hazard Message
National Weather Service Eureka CA
1046 PM PST Fri Jan 12 2018

.OVERVIEW...Enhanced sneaker wave conditions will be present on
Sunday as pleasant weather will coincide with the arrival of a
long period westerly swell along the northwest California
coastline. The ocean environment may be deceivingly calm on
Sunday. However, visitors to beaches, jetties, and rock
outcroppings should exercise extreme caution due to the increased
threat of sneaker waves.

CAZ101-103-104-109-131500-
/O.CON.KEKA.BH.S.0002.180114T1600Z-180115T0300Z/
Coastal Del Norte-Northern Humboldt Coast-Southwestern Humboldt-
Mendocino Coast-
1046 PM PST Fri Jan 12 2018

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

* TIMING...The risk for sneaker waves will be very high on 
  Sunday. 

* IMPACTS...Larger surf at offshore breaks and an enhanced risk 
  of sneaker waves on northwest California beaches. Steep 
  beaches will have a higher risk of sneaker wave activity with 
  greater wave run-up onto beaches. Large waves will also wash 
  over jetties and rock outcroppings that may normally stay dry. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A beach hazards statement is issued when threats such as sneaker
waves create life-threatening conditions in the surf zone.
Caution should be used when in or near the water. Never turn your
back to the ocean!

$$
334 
WHUS46 KEKA 131234
CFWEKA

Coastal Hazard Message
National Weather Service Eureka CA
434 AM PST Sat Jan 13 2018

.OVERVIEW...Enhanced sneaker wave conditions will be present on
Sunday as pleasant weather will coincide with the arrival of a
long period westerly swell along the northwest California
coastline. The ocean environment may be deceivingly calm on
Sunday. However, visitors to beaches, jetties, and rock
outcroppings should exercise extreme caution due to the increased
threat of sneaker waves.

CAZ101-103-104-109-132045-
/O.CON.KEKA.BH.S.0002.180114T1600Z-180115T0300Z/
Coastal Del Norte-Northern Humboldt Coast-Southwestern Humboldt-
Mendocino Coast-
434 AM PST Sat Jan 13 2018

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

* TIMING...The risk for sneaker waves will be very high on 
  Sunday. 

* IMPACTS...Larger surf at offshore breaks and an enhanced risk 
  of sneaker waves on northwest California beaches. Steep 
  beaches will have a higher risk of sneaker wave activity with 
  greater wave run-up onto beaches. Large waves will also wash 
  over jetties and rock outcroppings that may normally stay dry. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A beach hazards statement is issued when threats such as sneaker
waves create life-threatening conditions in the surf zone.
Caution should be used when in or near the water. Never turn your
back to the ocean!

$$
452 
WHUS46 KEKA 132051
CFWEKA

Coastal Hazard Message
National Weather Service Eureka CA
1251 PM PST Sat Jan 13 2018

.OVERVIEW...Enhanced sneaker wave conditions will be present on
Sunday as pleasant weather will coincide with the arrival of a
long period westerly swell along the northwest California
coastline. The ocean environment may be deceivingly calm on
Sunday. However, visitors to beaches, jetties, and rock
outcroppings should exercise extreme caution due to the increased
threat of sneaker waves.

CAZ101-103-104-109-141200-
/O.CON.KEKA.BH.S.0002.180114T1600Z-180115T0300Z/
Coastal Del Norte-Northern Humboldt Coast-Southwestern Humboldt-
Mendocino Coast-
1251 PM PST Sat Jan 13 2018

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

* TIMING...The risk for sneaker waves will be very high on 
  Sunday. 

* IMPACTS...Larger surf at offshore breaks and an enhanced risk 
  of sneaker waves on northwest California beaches. Steep 
  beaches will have a higher risk of sneaker wave activity with 
  greater wave run-up onto beaches. Large waves will also wash 
  over jetties and rock outcroppings that may normally stay dry. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A beach hazards statement is issued when threats such as sneaker
waves create life-threatening conditions in the surf zone.
Caution should be used when in or near the water. Never turn your
back to the ocean!

$$
457 
WHUS46 KEKA 141516
CFWEKA

Coastal Hazard Message
National Weather Service Eureka CA
716 AM PST Sun Jan 14 2018

.OVERVIEW...Enhanced sneaker wave conditions will be present today 
as pleasant weather will coincide with the arrival of a long 
period westerly swell along the northwest California coastline. 
The ocean environment may be deceivingly calm. However, visitors 
to beaches, jetties, and rock outcroppings should exercise extreme
caution due to the increased threat of sneaker waves.

CAZ101-103-104-109-150300-
/O.CON.KEKA.BH.S.0002.180114T1600Z-180115T0300Z/
Coastal Del Norte-Northern Humboldt Coast-Southwestern Humboldt-
Mendocino Coast-
716 AM PST Sun Jan 14 2018

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

* TIMING...The risk for sneaker waves will be high today with the
  greatest risk during the afternoon. 

* IMPACTS...Larger surf at offshore breaks and an enhanced risk 
  of sneaker waves on northwest California beaches. Steep 
  beaches will have a higher risk of sneaker wave activity with 
  greater wave run-up onto beaches. Large waves will also wash 
  over jetties and rock outcroppings that may normally stay dry. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A beach hazards statement is issued when threats such as sneaker
waves create life-threatening conditions in the surf zone.
Caution should be used when in or near the water. Never turn your
back to the ocean!

$$

Nearby

Beach Hazards Statements in California, 2018Every beach hazards statement in 2018

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.