Alert archive / California / Beach Hazards Statements in 2023
Beach Hazards Statement 4, NWS Eureka, CA
NWS Eureka, CA issued this beach hazards statement at Jan 29, 2023, 1:56 PM PST for Del Norte County, Humboldt County, Mendocino County, California. It took effect at Jan 31, 2023, 5:00 AM PST. It was in force for 12 hr.
The area
The counties it named.
The facts
- Issued
- Jan 29, 2023, 1:56 PM PST (21:56 UTC)
- In effect from
- Jan 31, 2023, 5:00 AM PST
- Expired
- Jan 31, 2023, 5:00 PM PST
- In force
- 12 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 21:58 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, 9.9 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
- 936 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- -41 m²/s²
- 0-3 km storm-relative helicity
- 39 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
323 WHUS46 KEKA 292156 CFWEKA Coastal Hazard Message National Weather Service Eureka CA 156 PM PST Sun Jan 29 2023 CAZ101-103-104-109-301200- /O.NEW.KEKA.BH.S.0004.230131T1300Z-230131T2100Z/ Coastal Del Norte-Northern Humboldt Coast-Southwestern Humboldt- Mendocino Coast- 156 PM PST Sun Jan 29 2023 ...BEACH HAZARDS STATEMENT IN EFFECT FROM LATE MONDAY NIGHT THROUGH TUESDAY AFTERNOON... * WHAT...A long period westerly swell around 5 feet will bring a moderate risk for sneaker waves. Large unexpected waves at beaches will be possible. * WHERE...Coastal Del Norte, Northern Humboldt Coast, Southwestern Humboldt and Mendocino Coast Counties. * WHEN...From late Monday night 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 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. && $$
6 follow-up statements
740 WHUS46 KEKA 301006 CFWEKA Coastal Hazard Message National Weather Service Eureka CA 206 AM PST Mon Jan 30 2023 CAZ101-103-104-109-301815- /O.EXT.KEKA.BH.S.0004.230131T1300Z-230201T0100Z/ Coastal Del Norte-Northern Humboldt Coast-Southwestern Humboldt- Mendocino Coast- 206 AM PST Mon Jan 30 2023 ...BEACH HAZARDS STATEMENT NOW IN EFFECT FROM LATE TONIGHT THROUGH TUESDAY AFTERNOON... * WHAT...A long period westerly swell around 5 feet will bring a moderate risk for sneaker waves. Large unexpected waves at beaches will be possible. * WHERE...Coastal Del Norte, Northern Humboldt Coast, Southwestern Humboldt and Mendocino Coast Counties. * WHEN...From late tonight through Tuesday afternoon.. . * IMPACTS...Large, unexpected waves can sweep across the beach without warning, sweeping people into the sea from rocks, jetties, and beaches. These waves can also move large objects such as logs, crushing anyone caught underneath. PRECAUTIONARY/PREPAREDNESS ACTIONS... Don't be fooled by an ocean that looks calm. There can be 30 minutes of small waves before a sneaker wave strikes. Avoid rocks and jetties. Avoid steep beaches. Stay much farther back from the water and never turn your back on the ocean. && $$
116 WHUS46 KEKA 301802 CFWEKA Coastal Hazard Message National Weather Service Eureka CA 1002 AM PST Mon Jan 30 2023 CAZ101-103-104-109-310215- /O.CON.KEKA.BH.S.0004.230131T1300Z-230201T0100Z/ Coastal Del Norte-Northern Humboldt Coast-Southwestern Humboldt- Mendocino Coast- 1002 AM PST Mon Jan 30 2023 ...BEACH HAZARDS STATEMENT REMAINS IN EFFECT FROM LATE TONIGHT THROUGH TUESDAY AFTERNOON... * WHAT...A long period westerly swell around 5 feet will bring a moderate risk for sneaker waves. Large unexpected waves at beaches will be possible. * WHERE...Coastal Del Norte, Northern Humboldt Coast, Southwestern Humboldt and Mendocino Coast Counties. * WHEN...From late tonight 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 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. && $$
749 WHUS46 KEKA 310201 CFWEKA Coastal Hazard Message National Weather Service Eureka CA 601 PM PST Mon Jan 30 2023 CAZ101-103-104-109-311015- /O.CON.KEKA.BH.S.0004.230131T1300Z-230201T0100Z/ Coastal Del Norte-Northern Humboldt Coast-Southwestern Humboldt- Mendocino Coast- 601 PM PST Mon Jan 30 2023 ...BEACH HAZARDS STATEMENT REMAINS IN EFFECT FROM 5 AM PST TUESDAY THROUGH TUESDAY AFTERNOON... * WHAT...Large unexpected waves along the coast. * WHERE...Coastal Del Norte, Northern Humboldt Coast, Southwestern Humboldt and Mendocino Coast Counties. * WHEN...From 5 AM PST Tuesday through Tuesday afternoon.. . * IMPACTS...Large, unexpected waves can sweep across the beach without warning, sweeping people into the sea from rocks, jetties, and beaches. These waves can also move large objects such as logs, crushing anyone caught underneath. PRECAUTIONARY/PREPAREDNESS ACTIONS... Don't be fooled by an ocean that looks calm. There can be 30 minutes of small waves before a sneaker wave strikes. Avoid rocks and jetties. Avoid steep beaches. Stay much farther back from the water and never turn your back on the ocean. && $$
859 WHUS46 KEKA 310942 CFWEKA Coastal Hazard Message National Weather Service Eureka CA 142 AM PST Tue Jan 31 2023 CAZ101-103-104-109-311745- /O.CON.KEKA.BH.S.0004.230131T1300Z-230201T0100Z/ Coastal Del Norte-Northern Humboldt Coast-Southwestern Humboldt- Mendocino Coast- 142 AM PST Tue Jan 31 2023 ...BEACH HAZARDS STATEMENT REMAINS IN EFFECT FROM 5 AM PST EARLY THIS MORNING THROUGH THIS AFTERNOON... * WHAT...A long period westerly swell around 5 feet will bring a moderate risk for sneaker waves today. Large unexpected waves at beaches will be possible. * WHERE...Coastal Del Norte, Northern Humboldt Coast, Southwestern Humboldt and Mendocino Coast Counties. * WHEN...From 5 AM PST early 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 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. && $$
757 WHUS46 KEKA 311735 CFWEKA Coastal Hazard Message National Weather Service Eureka CA 935 AM PST Tue Jan 31 2023 CAZ101-103-104-109-010100- /O.CON.KEKA.BH.S.0004.000000T0000Z-230201T0100Z/ Coastal Del Norte-Northern Humboldt Coast-Southwestern Humboldt- Mendocino Coast- 935 AM PST Tue Jan 31 2023 ...BEACH HAZARDS STATEMENT REMAINS IN EFFECT UNTIL 5 PM PST THIS AFTERNOON... * WHAT...A long period westerly swell around 6 feet will bring a moderate risk for sneaker waves today. Large unexpected waves at beaches will be possible. * WHERE...Coastal Del Norte, Northern Humboldt Coast, Southwestern Humboldt and Mendocino Coast Counties. * WHEN...From 5 AM PST early this morning through this afternoon.. . * IMPACTS...Large, unexpected waves can sweep across the beach without warning, sweeping people into the sea from rocks, jetties, and beaches. These waves can also move large objects such as logs, crushing anyone caught underneath. PRECAUTIONARY/PREPAREDNESS ACTIONS... Don't be fooled by an ocean that looks calm. There can be 30 minutes of small waves before a sneaker wave strikes. Avoid rocks and jetties. Avoid steep beaches. Stay much farther back from the water and never turn your back on the ocean. && $$
916 WHUS46 KEKA 010102 CFWEKA Coastal Hazard Message National Weather Service Eureka CA 502 PM PST Tue Jan 31 2023 CAZ101-103-104-109-010215- /O.EXP.KEKA.BH.S.0004.000000T0000Z-230201T0100Z/ Coastal Del Norte-Northern Humboldt Coast-Southwestern Humboldt- Mendocino Coast- 502 PM PST Tue Jan 31 2023 ...BEACH HAZARDS STATEMENT HAS EXPIRED... The threat of sneaker waves has peaked and will continue to decrease tonight. $$ SEC
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.