Alert archive / California / Beach Hazards Statements in 2023
Beach Hazards Statement 9, NWS Eureka, CA
NWS Eureka, CA issued this beach hazards statement at Nov 20, 2023, 8:34 PM PST for Del Norte County, Humboldt County, California. It took effect at Nov 21, 2023, 9:00 AM PST. It was in force for 9 hr.
The area
The counties it named.
The facts
- Issued
- Nov 20, 2023, 8:34 PM PST (04:34 UTC)
- In effect from
- Nov 21, 2023, 9:00 AM PST
- Expired
- Nov 21, 2023, 6:00 PM PST
- In force
- 9 hr
- Issued by
- NWS Eureka, CA
Counties Del Norte County, CA, Humboldt County, CA
The radar
The Eureka (Bunker Hill) radar (KBHX), 86 km from the middle of the area, began a volume at 04:35 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, 4.6 hours before the alert went out and 158 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
- 2385 m above ground
- 0-6 km bulk shear
- 4 kt
- 0-1 km storm-relative helicity
- -87 m²/s²
- 0-3 km storm-relative helicity
- -19 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
018 WHUS46 KEKA 210434 CFWEKA Coastal Hazard Message National Weather Service Eureka CA 834 PM PST Mon Nov 20 2023 CAZ101-103-104-211245- /O.NEW.KEKA.BH.S.0009.231121T1700Z-231122T0200Z/ Coastal Del Norte-Northern Humboldt Coast-Southwestern Humboldt- 834 PM PST Mon Nov 20 2023 ...BEACH HAZARDS STATEMENT IN EFFECT FROM TUESDAY MORNING THROUGH TUESDAY AFTERNOON... * WHAT...Increased threat of sneaker waves expected. * WHERE...Coastal Del Norte, Northern Humboldt Coast and Southwestern Humboldt Counties. * WHEN...From Tuesday morning through Tuesday afternoon.. . * IMPACTS...Large, unexpected waves can sweep across the beach without warning, sweeping people into the sea from rocks, jetties, and beaches. These sneaker 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. && $$
2 follow-up statements
829 WHUS46 KEKA 211126 CFWEKA Coastal Hazard Message National Weather Service Eureka CA 326 AM PST Tue Nov 21 2023 CAZ101-103-104-220200- /O.CON.KEKA.BH.S.0009.231121T1700Z-231122T0200Z/ Coastal Del Norte-Northern Humboldt Coast-Southwestern Humboldt- 326 AM PST Tue Nov 21 2023 ...BEACH HAZARDS STATEMENT REMAINS IN EFFECT FROM 9 AM PST THIS MORNING THROUGH THIS AFTERNOON... * WHAT...Increased threat of sneaker waves expected. * WHERE...Coastal Del Norte, Northern Humboldt Coast and Southwestern Humboldt Counties. * WHEN...From 9 AM PST this morning through this afternoon.. . * IMPACTS...Large, unexpected waves can sweep across the beach without warning, sweeping people into the sea from rocks, jetties, and beaches. These sneaker waves can also move large objects such as logs, crushing anyone caught underneath. PRECAUTIONARY/PREPAREDNESS ACTIONS... Don't be fooled by an ocean that looks calm. There can be 30 minutes of small waves before a sneaker wave strikes. Avoid rocks and jetties. Avoid steep beaches. Stay much farther back from the water and never turn your back on the ocean. && $$
878 WHUS46 KEKA 220223 CFWEKA Coastal Hazard Message National Weather Service Eureka CA 623 PM PST Tue Nov 21 2023 CAZ101-103-104-220330- /O.EXP.KEKA.BH.S.0009.000000T0000Z-231122T0200Z/ Coastal Del Norte-Northern Humboldt Coast-Southwestern Humboldt- 623 PM PST Tue Nov 21 2023 ...BEACH HAZARDS STATEMENT HAS EXPIRED... $$
The office that day
Everything else NWS Eureka, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Nov 21, 2:53 AM PST | Gale Watch | EKA | 24 hr | |
| Nov 21, 2:33 PM PST | Small Craft Advisory | EKA | 43 hr |
Nearby
Beach Hazards Statements in California, 2023Every beach hazards statement in 2023
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.