Alert archive / California / Beach Hazards Statements in 2023
Beach Hazards Statement 6, NWS Eureka, CA
NWS Eureka, CA issued this beach hazards statement at Sep 17, 2023, 2:21 PM PDT for Del Norte County, Humboldt County, Mendocino County, California. It took effect at Sep 18, 2023, 10:00 AM PDT. It was in force for 10 hr.
The area
The counties it named.
The facts
- Issued
- Sep 17, 2023, 2:21 PM PDT (21:21 UTC)
- In effect from
- Sep 18, 2023, 10:00 AM PDT
- Expired
- Sep 18, 2023, 8:00 PM PDT
- In force
- 10 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 21:24 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 12:00Z, 9.4 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.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 2082 m above ground
- 0-6 km bulk shear
- 11 kt
- 0-1 km storm-relative helicity
- 2 m²/s²
- 0-3 km storm-relative helicity
- -7 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
067 WHUS46 KEKA 172121 CFWEKA Coastal Hazard Message National Weather Service Eureka CA 221 PM PDT Sun Sep 17 2023 CAZ101-103-104-109-180530- /O.NEW.KEKA.BH.S.0006.230918T1700Z-230919T0300Z/ Coastal Del Norte-Northern Humboldt Coast-Southwestern Humboldt- Mendocino Coast- 221 PM PDT Sun Sep 17 2023 ...BEACH HAZARDS STATEMENT IN EFFECT FROM MONDAY MORNING THROUGH MONDAY EVENING... * WHAT...Large unexpected waves along the coast. * WHERE...Coastal Del Norte, Northern Humboldt Coast, Southwestern Humboldt and Mendocino Coast Counties. * WHEN...From Monday morning through Monday evening.. . * IMPACTS...Large, unexpected waves can sweep across the beach without warning, sweeping people into the sea from rocks, jetties, and beaches. These 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. && $$
4 follow-up statements
135 WHUS46 KEKA 180508 CFWEKA Coastal Hazard Message National Weather Service Eureka CA 1008 PM PDT Sun Sep 17 2023 CAZ109-180615- /O.CAN.KEKA.BH.S.0006.230918T1700Z-230919T0300Z/ Mendocino Coast- 1008 PM PDT Sun Sep 17 2023 ...BEACH HAZARDS STATEMENT IS CANCELLED... $$ CAZ101-103-104-181315- /O.CON.KEKA.BH.S.0006.230918T1700Z-230919T0300Z/ Coastal Del Norte-Northern Humboldt Coast-Southwestern Humboldt- 1008 PM PDT Sun Sep 17 2023 ...BEACH HAZARDS STATEMENT REMAINS IN EFFECT FROM 10 AM PDT MONDAY THROUGH MONDAY EVENING... * WHAT...Large unexpected waves along the coast. * WHERE...Coastal Del Norte, Northern Humboldt Coast and Southwestern Humboldt. * WHEN...From Monday morning through Monday evening.. . * IMPACTS...Large, unexpected waves can sweep across the beach without warning, sweeping people into the sea from rocks, jetties, and beaches. These 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. && $$
440 WHUS46 KEKA 180906 CFWEKA Coastal Hazard Message National Weather Service Eureka CA 206 AM PDT Mon Sep 18 2023 CAZ101-103-104-181715- /O.EXT.KEKA.BH.S.0006.230918T1900Z-230919T0300Z/ Coastal Del Norte-Northern Humboldt Coast-Southwestern Humboldt- 206 AM PDT Mon Sep 18 2023 ...BEACH HAZARDS STATEMENT NOW IN EFFECT FROM NOON PDT TODAY THROUGH THIS EVENING... * WHAT...Large unexpected waves along the coast. * WHERE...Coastal Del Norte, Northern Humboldt Coast and Southwestern Humboldt Counties. * WHEN...From noon PDT today through this evening.. . * IMPACTS...Large, unexpected waves can sweep across the beach without warning, sweeping people into the sea from rocks, jetties, and beaches. These waves can also move large objects such as logs, crushing anyone caught underneath. PRECAUTIONARY/PREPAREDNESS ACTIONS... Don't be fooled by an ocean that looks calm. There can be 30 minutes of small waves before a sneaker wave strikes. Avoid rocks and jetties. Avoid steep beaches. Stay much farther back from the water and never turn your back on the ocean. && $$
674 WHUS46 KEKA 181541 CFWEKA Coastal Hazard Message National Weather Service Eureka CA 841 AM PDT Mon Sep 18 2023 CAZ101-103-104-190300- /O.EXT.KEKA.BH.S.0006.230918T2100Z-230919T0300Z/ Coastal Del Norte-Northern Humboldt Coast-Southwestern Humboldt- 841 AM PDT Mon Sep 18 2023 ...BEACH HAZARDS STATEMENT NOW IN EFFECT FROM 2 PM THIS AFTERNOON TO 8 PM PDT THIS EVENING... * WHAT...Large unexpected waves along the coast. * WHERE...Coastal Del Norte, Northern Humboldt Coast and Southwestern Humboldt Counties. * WHEN...From 2 PM this afternoon to 8 PM PDT this evening.. . * IMPACTS...Large, unexpected waves can sweep across the beach without warning, sweeping people into the sea from rocks, jetties, and beaches. These 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. && $$
400 WHUS46 KEKA 190245 CFWEKA Coastal Hazard Message National Weather Service Eureka CA 745 PM PDT Mon Sep 18 2023 CAZ101-103-104-190345- /O.EXP.KEKA.BH.S.0006.000000T0000Z-230919T0300Z/ Coastal Del Norte-Northern Humboldt Coast-Southwestern Humboldt- 745 PM PDT Mon Sep 18 2023 ...BEACH HAZARDS STATEMENT WILL EXPIRE AT 8 PM PDT THIS EVENING... $$
The office that day
Everything else NWS Eureka, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 16, 5:18 PM PDT | Special Weather Statement | EKA | Mendocino | 27 min |
| Sep 16, 5:22 PM PDT | Special Weather Statement | EKA | Humboldt | 23 min |
| Sep 16, 5:48 PM PDT | Special Weather Statement | EKA | Humboldt | 27 min |
| Sep 17, 2:19 PM PDT | Gale Warning | EKA | 4 days | |
| Sep 17, 2:19 PM PDT | Small Craft Advisory | EKA | 49 hr | |
| Sep 17, 4:40 PM PDT | Special Weather Statement | EKA | Trinity | 35 min |
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.