Alert archive / California / Beach Hazards Statements in 2018
Beach Hazards Statement 9, NWS Eureka, CA
NWS Eureka, CA issued this beach hazards statement at Dec 4, 2018, 3:33 AM PST for Del Norte County, Humboldt County, Mendocino County, California. It took effect at Dec 5, 2018, 12:00 PM PST. It was in force for 54 hr.
The area
The counties it named.
The facts
- Issued
- Dec 4, 2018, 3:33 AM PST (11:33 UTC)
- In effect from
- Dec 5, 2018, 12:00 PM PST
- Expired
- Dec 7, 2018, 6:00 PM PST
- In force
- 54 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 11:34 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, 11.6 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.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1200 m above ground
- 0-6 km bulk shear
- 43 kt
- 0-1 km storm-relative helicity
- -15 m²/s²
- 0-3 km storm-relative helicity
- 118 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
274 WHUS46 KEKA 041133 CFWEKA Coastal Hazard Message National Weather Service Eureka CA 333 AM PST Tue Dec 4 2018 ...HIGH LIKELIHOOD OF SNEAKER WAVES LATE WEDNESDAY THROUGH FRIDAY... CAZ101-103-104-109-051145- /O.NEW.KEKA.BH.S.0009.181205T2000Z-181208T0200Z/ Coastal Del Norte-Northern Humboldt Coast-Southwestern Humboldt- Mendocino Coast- 333 AM PST Tue Dec 4 2018 ...BEACH HAZARDS STATEMENT IN EFFECT FROM WEDNESDAY AFTERNOON THROUGH FRIDAY AFTERNOON... The National Weather Service in Eureka has issued a Beach Hazards Statement...which is in effect from Wednesday afternoon through Friday afternoon. * TIMING...The highest sneaker wave risk will be from late Wednesday through Thursday...with a moderate risk on Friday. * IMPACTS...A long period northwest swell will move through the coastal waters and enhance the 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 than expected. Large waves will also wash over jetties and rock outcroppings that may normally stay dry. Surf will continue to build beyond Monday, with large breaking waves expected Tuesday and Wednesday as well. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Beach Hazard Statement is issued when threats such as sneaker waves and other hazards create life-threatening conditions in the surf zone. Caution should be used when in or near the water. && $$
9 follow-up statements
358 WHUS46 KEKA 051130 CFWEKA Coastal Hazard Message National Weather Service Eureka CA 330 AM PST Wed Dec 5 2018 ...HIGH LIKELIHOOD OF SNEAKER WAVES LATE WEDNESDAY THROUGH FRIDAY... CAZ101-103-104-109-051930- /O.CON.KEKA.BH.S.0009.181205T2000Z-181208T0200Z/ Coastal Del Norte-Northern Humboldt Coast-Southwestern Humboldt- Mendocino Coast- 330 AM PST Wed Dec 5 2018 ...BEACH HAZARDS STATEMENT REMAINS IN EFFECT FROM NOON PST TODAY THROUGH FRIDAY AFTERNOON... * TIMING...The highest sneaker wave risk will be from late Wednesday through Thursday...with a moderate risk on Friday. * IMPACTS...A long period northwest swell will move through the coastal waters and enhance the risk of sneaker waves on northwest California beaches. Steep beaches will have a higher risk of sneaker wave activity with greater wave run-up onto beaches than expected. Large waves will also wash over jetties and rock outcroppings that may normally stay dry. Surf will continue to build beyond Monday, with large breaking waves expected Tuesday and Wednesday as well. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Beach Hazard Statement is issued when threats such as sneaker waves and other hazards create life-threatening conditions in the surf zone. Caution should be used when in or near the water. && $$
622 WHUS46 KEKA 051846 CFWEKA Coastal Hazard Message National Weather Service Eureka CA 1046 AM PST Wed Dec 5 2018 ...HIGH LIKELIHOOD OF SNEAKER WAVES LATE TODAY THROUGH FRIDAY... CAZ101-103-104-109-060800- /O.CON.KEKA.BH.S.0009.181205T2000Z-181208T0200Z/ Coastal Del Norte-Northern Humboldt Coast-Southwestern Humboldt- Mendocino Coast- 1046 AM PST Wed Dec 5 2018 ...BEACH HAZARDS STATEMENT REMAINS IN EFFECT THROUGH FRIDAY AFTERNOON... * TIMING...The highest sneaker wave risk will be from this evening through Thursday with a moderate risk on Friday. * IMPACTS...A long period northwest swell will move through the coastal waters and enhance the 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 than expected. Large waves will also wash over jetties and rock outcroppings that may normally stay dry. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Beach Hazard Statement is issued when threats such as sneaker waves and other hazards create life-threatening conditions in the surf zone. Caution should be used when in or near the water. $$
556 WHUS46 KEKA 060201 CFWEKA Coastal Hazard Message National Weather Service Eureka CA 601 PM PST Wed Dec 5 2018 ...HIGH LIKELIHOOD OF SNEAKER WAVES THIS EVENING THROUGH FRIDAY... CAZ101-103-104-109-061015- /O.CON.KEKA.BH.S.0009.000000T0000Z-181208T0200Z/ Coastal Del Norte-Northern Humboldt Coast-Southwestern Humboldt- Mendocino Coast- 601 PM PST Wed Dec 5 2018 ...BEACH HAZARDS STATEMENT REMAINS IN EFFECT THROUGH FRIDAY AFTERNOON... * TIMING...The highest sneaker wave risk will be from this evening through Thursday with a moderate risk on Friday. * IMPACTS...A long period northwest swell will move through the coastal waters and enhance the risk for sneaker waves across northwest California beaches. Steep beaches will have a higher risk of sneaker wave activity with greater wave run-up onto beaches than expected. Large waves will also wash over jetties and rock outcroppings that may normally stay dry. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Beach Hazard Statement is issued when threats such as sneaker waves and other hazards create life-threatening conditions in the surf zone. Caution should be used when in or near the water. $$
830 WHUS46 KEKA 060553 CFWEKA Coastal Hazard Message National Weather Service Eureka CA 953 PM PST Wed Dec 5 2018 ...HIGH LIKELIHOOD OF SNEAKER WAVES THROUGH FRIDAY... CAZ101-103-104-109-061400- /O.CON.KEKA.BH.S.0009.000000T0000Z-181208T0200Z/ Coastal Del Norte-Northern Humboldt Coast-Southwestern Humboldt- Mendocino Coast- 953 PM PST Wed Dec 5 2018 ...BEACH HAZARDS STATEMENT REMAINS IN EFFECT THROUGH FRIDAY AFTERNOON... * TIMING...The highest sneaker wave risk will be from tonight through Thursday with a moderate risk on Friday. * IMPACTS...A long period northwest swell will move through the coastal waters and enhance the risk for sneaker waves across northwest California beaches. Steep beaches will have a higher risk of sneaker wave activity with greater wave run-up onto beaches than expected. Large waves will also wash over jetties and rock outcroppings that may normally stay dry. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Beach Hazard Statement is issued when threats such as sneaker waves and other hazards create life-threatening conditions in the surf zone. Caution should be used when in or near the water. $$
569 WHUS46 KEKA 061116 CFWEKA Coastal Hazard Message National Weather Service Eureka CA 316 AM PST Thu Dec 6 2018 ...HIGH LIKELIHOOD OF SNEAKER WAVES THROUGH FRIDAY... CAZ101-103-104-109-070530- /O.CON.KEKA.BH.S.0009.000000T0000Z-181208T0200Z/ Coastal Del Norte-Northern Humboldt Coast-Southwestern Humboldt- Mendocino Coast- 316 AM PST Thu Dec 6 2018 ...BEACH HAZARDS STATEMENT REMAINS IN EFFECT THROUGH FRIDAY AFTERNOON... * TIMING...The highest sneaker wave risk will be from early this morning through the remainder of the day with a moderate risk on Friday. * IMPACTS...A long period northwest swell will move through the coastal waters and enhance the risk for sneaker waves across northwest California beaches. Steep beaches will have a higher risk of sneaker wave activity with greater wave run-up onto beaches than expected. Large waves will also wash over jetties and rock outcroppings that may normally stay dry. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Beach Hazard Statement is issued when threats such as sneaker waves and other hazards create life-threatening conditions in the surf zone. Caution should be used when in or near the water. $$
323 WHUS46 KEKA 070342 CFWEKA Coastal Hazard Message National Weather Service Eureka CA 742 PM PST Thu Dec 6 2018 ...HIGH LIKELIHOOD OF SNEAKER WAVES THROUGH FRIDAY... CAZ101-103-104-109-071145- /O.CON.KEKA.BH.S.0009.000000T0000Z-181208T0200Z/ Coastal Del Norte-Northern Humboldt Coast-Southwestern Humboldt- Mendocino Coast- 742 PM PST Thu Dec 6 2018 ...BEACH HAZARDS STATEMENT REMAINS IN EFFECT THROUGH FRIDAY AFTERNOON... * TIMING...The highest sneaker wave risk will be this evening, with a moderate risk occurring during Friday. * IMPACTS...A long period northwest swell will move across the coastal waters and enhance the risk for sneaker waves over northwest California beaches. Steep beaches will have a higher risk of sneaker wave activity with greater wave run-up onto beaches than expected. Large waves will also wash over jetties and rock outcroppings that may normally stay dry. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Beach Hazard Statement is issued when threats such as sneaker waves and other hazards create life-threatening conditions in the surf zone. Caution should be used when in or near the water. $$
058 WHUS46 KEKA 071113 CFWEKA Coastal Hazard Message National Weather Service Eureka CA 313 AM PST Fri Dec 7 2018 ...MODERATE RISK OF SNEAKER WAVES THROUGH THIS AFTERNOON... CAZ101-103-104-109-071915- /O.CON.KEKA.BH.S.0009.000000T0000Z-181208T0200Z/ Coastal Del Norte-Northern Humboldt Coast-Southwestern Humboldt- Mendocino Coast- 313 AM PST Fri Dec 7 2018 ...BEACH HAZARDS STATEMENT REMAINS IN EFFECT THROUGH THIS AFTERNOON... * TIMING...While the risk of sneaker waves will lower later today and tonight, a moderate risk will continue through this afternoon. * IMPACTS...A long period northwest swell will move across the coastal waters and enhance the risk for sneaker waves over northwest California beaches. Steep beaches will have a higher risk of sneaker wave activity with greater wave run-up onto beaches than expected. Large waves will also wash over jetties and rock outcroppings that may normally stay dry. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Beach Hazard Statement is issued when threats such as sneaker waves and other hazards create life-threatening conditions in the surf zone. Caution should be used when in or near the water. $$
938 WHUS46 KEKA 071900 CFWEKA Coastal Hazard Message National Weather Service Eureka CA 1100 AM PST Fri Dec 7 2018 ...MODERATE RISK OF SNEAKER WAVES THROUGH THIS AFTERNOON... CAZ101-103-104-109-080200- /O.CON.KEKA.BH.S.0009.000000T0000Z-181208T0200Z/ Coastal Del Norte-Northern Humboldt Coast-Southwestern Humboldt- Mendocino Coast- 1100 AM PST Fri Dec 7 2018 ...BEACH HAZARDS STATEMENT REMAINS IN EFFECT UNTIL 6 PM PST THIS EVENING... * TIMING...While the risk of sneaker waves will lower later today and tonight, a moderate risk will continue through this afternoon. * IMPACTS...A long period northwest swell will move across the coastal waters and enhance the risk for sneaker waves over northwest California beaches. Steep beaches will have a higher risk of sneaker wave activity with greater wave run-up onto beaches than expected. Large waves will also wash over jetties and rock outcroppings that may normally stay dry. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Beach Hazard Statement is issued when threats such as sneaker waves and other hazards create life-threatening conditions in the surf zone. Caution should be used when in or near the water. $$
455 WHUS46 KEKA 080133 CFWEKA Coastal Hazard Message National Weather Service Eureka CA 533 PM PST Fri Dec 7 2018 CAZ101-103-104-109-080245- /O.EXP.KEKA.BH.S.0009.000000T0000Z-181208T0200Z/ Coastal Del Norte-Northern Humboldt Coast-Southwestern Humboldt- Mendocino Coast- 533 PM PST Fri Dec 7 2018 ...BEACH HAZARDS STATEMENT WILL EXPIRE AT 6 PM PST THIS EVENING... $$
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.