Alert archive / California / Beach Hazards Statements in 2017
Beach Hazards Statement 9, NWS Eureka, CA
NWS Eureka, CA issued this beach hazards statement at Dec 4, 2017, 2:12 AM PST for Del Norte County, Humboldt County, Mendocino County, California. It took effect at Dec 5, 2017, 3:00 AM PST. It was in force for 13 hr.
The area
The counties it named.
The facts
- Issued
- Dec 4, 2017, 2:12 AM PST (10:12 UTC)
- In effect from
- Dec 5, 2017, 3:00 AM PST
- Expired
- Dec 5, 2017, 4:00 PM PST
- In force
- 13 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 10:14 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, 10.2 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
- 2 J/kg
- Mixed-layer CIN
- -13 J/kg
- Mixed-layer LCL
- 1008 m above ground
- 0-6 km bulk shear
- 39 kt
- 0-1 km storm-relative helicity
- 6 m²/s²
- 0-3 km storm-relative helicity
- 65 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
570 WHUS46 KEKA 041012 CFWEKA COASTAL HAZARD MESSAGE NATIONAL WEATHER SERVICE EUREKA CA 212 AM PST MON DEC 4 2017 CAZ101-103-104-109-041815- /O.NEW.KEKA.BH.S.0009.171205T1100Z-171206T0000Z/ COASTAL DEL NORTE-NORTHERN HUMBOLDT COAST-SOUTHWESTERN HUMBOLDT- MENDOCINO COAST- 212 AM PST MON DEC 4 2017 ...BEACH HAZARDS STATEMENT IN EFFECT FROM LATE TONIGHT THROUGH TUESDAY AFTERNOON... THE NATIONAL WEATHER SERVICE IN EUREKA HAS ISSUED A BEACH HAZARDS STATEMENT...WHICH IS IN EFFECT FROM LATE TONIGHT THROUGH TUESDAY AFTERNOON. * TIMING...THE HIGHEST SNEAKER WAVE RISK WILL BE FROM EARLY TUESDAY MORNING THROUGH THE DAY ON TUESDAY. * 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 RIP CURRENTS...LONGSHORE CURRENTS...SNEAKER WAVES AND OTHER HAZARDS 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! && $$
2 follow-up statements
968 WHUS46 KEKA 050833 CFWEKA COASTAL HAZARD MESSAGE NATIONAL WEATHER SERVICE EUREKA CA 1233 AM PST TUE DEC 5 2017 CAZ101-103-104-109-051645- /O.CON.KEKA.BH.S.0009.171205T1100Z-171206T0000Z/ COASTAL DEL NORTE-NORTHERN HUMBOLDT COAST-SOUTHWESTERN HUMBOLDT- MENDOCINO COAST- 1233 AM PST TUE DEC 5 2017 ...BEACH HAZARDS STATEMENT REMAINS IN EFFECT THROUGH THIS AFTERNOON... * TIMING...THE HIGHEST SNEAKER WAVE RISK WILL BE FROM EARLY TUESDAY MORNING THROUGH THE DAY ON TUESDAY. * IMPACTS...LARGER SURF AT OFFSHORE BREAKS AND AN ENHANCED RISK OF SNEAKER WAVES ON NORTHWEST CALIFORNIA BEACHES. STEEP BEACHES WILL HAVE A HIGHER RISK OF SNEAKER WAVE ACTIVITY WITH GREATER WAVE RUN-UP ONTO BEACHES. LARGE WAVES WILL ALSO WASH OVER JETTIES AND ROCK OUTCROPPINGS THAT MAY NORMALLY STAY DRY. PRECAUTIONARY/PREPAREDNESS ACTIONS... A BEACH HAZARDS STATEMENT IS ISSUED WHEN THREATS SUCH AS RIP CURRENTS...LONGSHORE CURRENTS...SNEAKER WAVES AND OTHER HAZARDS CREATE LIFE-THREATENING CONDITIONS IN THE SURF ZONE. CAUTION SHOULD BE USED WHEN IN OR NEAR THE WATER. NEVER TURN YOUR BACK TO THE OCEAN! && $$
947 WHUS46 KEKA 051220 CFWEKA COASTAL HAZARD MESSAGE NATIONAL WEATHER SERVICE EUREKA CA 420 AM PST TUE DEC 5 2017 CAZ101-103-104-109-052030- /O.CON.KEKA.BH.S.0009.000000T0000Z-171206T0000Z/ COASTAL DEL NORTE-NORTHERN HUMBOLDT COAST-SOUTHWESTERN HUMBOLDT- MENDOCINO COAST- 420 AM PST TUE DEC 5 2017 ...BEACH HAZARDS STATEMENT REMAINS IN EFFECT UNTIL 4 PM PST THIS AFTERNOON... * TIMING...THE HIGHEST SNEAKER WAVE RISK WILL BE FROM EARLY TUESDAY MORNING THROUGH THE DAY ON TUESDAY. * 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 RIP CURRENTS...LONGSHORE CURRENTS...SNEAKER WAVES AND OTHER HAZARDS 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! && $$
The office that day
Everything else NWS Eureka, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 3, 7:06 PM PST | Small Craft Advisory | EKA | 17 hr | |
| Dec 4, 10:13 AM PST | Frost Advisory | EKA | Del Norte, Humboldt | 23 hr |
Nearby
Beach Hazards Statements in California, 2017Every beach hazards statement in 2017
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.