Alert archive / California / Beach Hazards Statements in 2020
Beach Hazards Statement 7, NWS Eureka, CA
NWS Eureka, CA issued this beach hazards statement at Sep 22, 2020, 1:54 PM PDT for Del Norte County, Humboldt County, Mendocino County, California. It took effect at Sep 23, 2020, 5:00 PM PDT. It was in force for 43 hr.
The area
The counties it named.
The facts
- Issued
- Sep 22, 2020, 1:54 PM PDT (20:54 UTC)
- In effect from
- Sep 23, 2020, 5:00 PM PDT
- Expired
- Sep 25, 2020, 12:00 PM PDT
- In force
- 43 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 20:56 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, 8.9 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
- 886 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- 15 m²/s²
- 0-3 km storm-relative helicity
- 96 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
652 WHUS46 KEKA 222054 CFWEKA Coastal Hazard Message National Weather Service Eureka CA 154 PM PDT Tue Sep 22 2020 CAZ101-103-104-109-231100- /O.NEW.KEKA.BH.S.0007.200924T0000Z-200925T1200Z/ Coastal Del Norte-Northern Humboldt Coast-Southwestern Humboldt- Mendocino Coast- 154 PM PDT Tue Sep 22 2020 ...LARGE WEST SWELL ARRIVING LATE WEDNESDAY BRINGING RAPIDLY BUILDING SURF... * WHAT...Large swell arriving late Wednesday with surf heights building up to 11 feet Wednesday night and 18 feet by Thursday morning. * WHERE...Del Norte, Humboldt, and Mendocino county coastal areas. * WHEN...From Wednesday afternoon through late Thursday night. * IMPACTS...Hazardous surf conditions, particularly along west and northwest facing beaches. Increased threat of shoaling offshore. Flat summer beach profiles may increase wave run-up onto the beaches. * ADDITIONAL DETAILS...The surf is forecast to gradually subside on Friday. PRECAUTIONARY/PREPAREDNESS ACTIONS... Remain out of the water to avoid hazardous swimming conditions. Never turn your back on the ocean! $$ SEC
7 follow-up statements
169 WHUS46 KEKA 231049 CFWEKA Coastal Hazard Message National Weather Service Eureka CA 349 AM PDT Wed Sep 23 2020 CAZ101-103-104-109-232200- /O.CON.KEKA.BH.S.0007.200924T0000Z-200925T1200Z/ Coastal Del Norte-Northern Humboldt Coast-Southwestern Humboldt- Mendocino Coast- 349 AM PDT Wed Sep 23 2020 ...BEACH HAZARDS STATEMENT REMAINS IN EFFECT FROM THIS AFTERNOON THROUGH LATE THURSDAY NIGHT... * WHAT...Large swell arriving this afternoon with surf heights building up to 11 feet tonight and 18 feet by Thursday morning. * WHERE...Del Norte, Humboldt, and Mendocino County coastal areas. * WHEN...From this afternoon through late Thursday night. * IMPACTS...Hazardous surf conditions, particularly along west and northwest facing beaches. Increased threat of shoaling offshore. Flat summer beach profiles may increase wave run-up onto the beaches. * ADDITIONAL DETAILS...The surf is forecast to gradually subside on Friday. PRECAUTIONARY/PREPAREDNESS ACTIONS... Remain out of the water to avoid hazardous swimming conditions. Never turn your back on the ocean! && $$
760 WHUS46 KEKA 232123 CFWEKA Coastal Hazard Message National Weather Service Eureka CA 223 PM PDT Wed Sep 23 2020 CAZ101-103-104-109-241100- /O.CON.KEKA.BH.S.0007.200924T0000Z-200925T1200Z/ Coastal Del Norte-Northern Humboldt Coast-Southwestern Humboldt- Mendocino Coast- 223 PM PDT Wed Sep 23 2020 ...LARGE WEST SWELL ARRIVING BY THIS EVENING WILL BRING RAPIDLY BUILDING SURF... * WHAT...Large swell arriving by this evening with surf heights building up to 11 feet tonight and 18 feet by Thursday morning. * WHERE...Del Norte, Humboldt, and Mendocino County coastal areas. * WHEN...From this afternoon through late Thursday night. * IMPACTS...Hazardous surf conditions, particularly along west and northwest facing beaches. Increased threat of shoaling offshore. Flat summer beach profiles may increase wave run-up onto the beaches. * ADDITIONAL DETAILS...The surf is forecast to gradually subside on Friday. PRECAUTIONARY/PREPAREDNESS ACTIONS... Remain out of the water to avoid hazardous swimming conditions. Never turn your back on the ocean! $$
589 WHUS46 KEKA 241014 CFWEKA Coastal Hazard Message National Weather Service Eureka CA 314 AM PDT Thu Sep 24 2020 CAZ101-103-104-109-241830- /O.CON.KEKA.BH.S.0007.000000T0000Z-200925T1200Z/ Coastal Del Norte-Northern Humboldt Coast-Southwestern Humboldt- Mendocino Coast- 314 AM PDT Thu Sep 24 2020 ...BEACH HAZARDS STATEMENT REMAINS IN EFFECT THROUGH LATE TONIGHT... * WHAT...Large swell today with surf heights up to 18 feet. * WHERE...Del Norte, Humboldt, and Mendocino County coastal areas. * WHEN...Until late tonight. * IMPACTS...Hazardous surf conditions, particularly along west and northwest facing beaches. Increased threat of shoaling offshore. Flat summer beach profiles may increase wave run-up onto the beaches. * ADDITIONAL DETAILS...The surf is forecast to gradually subside on Friday. PRECAUTIONARY/PREPAREDNESS ACTIONS... Remain out of the water to avoid hazardous swimming conditions. Never turn your back on the ocean! $$
024 WHUS46 KEKA 241830 CFWEKA Coastal Hazard Message National Weather Service Eureka CA 1130 AM PDT Thu Sep 24 2020 CAZ101-103-104-109-250230- /O.CON.KEKA.BH.S.0007.000000T0000Z-200925T1200Z/ Coastal Del Norte-Northern Humboldt Coast-Southwestern Humboldt- Mendocino Coast- 1130 AM PDT Thu Sep 24 2020 ...BEACH HAZARDS STATEMENT REMAINS IN EFFECT THROUGH LATE TONIGHT... * WHAT...Large swell today with surf heights up to 18 feet. * WHERE...Del Norte, Humboldt, and Mendocino County coastal areas. * WHEN...Until late tonight. * IMPACTS...Hazardous surf conditions, particularly along west and northwest facing beaches. Increased threat of shoaling offshore. Flat summer beach profiles may increase wave run-up onto the beaches. * ADDITIONAL DETAILS...The surf is forecast to gradually subside on Friday. PRECAUTIONARY/PREPAREDNESS ACTIONS... Remain out of the water to avoid hazardous swimming conditions. Never turn your back on the ocean! $$
780 WHUS46 KEKA 250056 CFWEKA Coastal Hazard Message National Weather Service Eureka CA 556 PM PDT Thu Sep 24 2020 CAZ101-103-104-109-250900- /O.CON.KEKA.BH.S.0007.000000T0000Z-200925T1200Z/ Coastal Del Norte-Northern Humboldt Coast-Southwestern Humboldt- Mendocino Coast- 556 PM PDT Thu Sep 24 2020 ...BEACH HAZARDS STATEMENT REMAINS IN EFFECT UNTIL 5 AM PDT FRIDAY... * WHAT...Large swell tonight with surf heights up to 18 feet. * WHERE...Del Norte, Humboldt, and Mendocino County coastal areas. * WHEN...Until late tonight. * IMPACTS...Hazardous surf conditions, particularly along west and northwest facing beaches. Increased threat of shoaling offshore. Flat summer beach profiles may increase wave run-up onto the beaches. * ADDITIONAL DETAILS...The surf is forecast to gradually subside on Friday. PRECAUTIONARY/PREPAREDNESS ACTIONS... Remain out of the water to avoid hazardous swimming conditions. && $$
830 WHUS46 KEKA 251145 CFWEKA Coastal Hazard Message National Weather Service Eureka CA 445 AM PDT Fri Sep 25 2020 CAZ101-103-104-109-251900- /O.EXT.KEKA.BH.S.0007.000000T0000Z-200925T1900Z/ Coastal Del Norte-Northern Humboldt Coast-Southwestern Humboldt- Mendocino Coast- 445 AM PDT Fri Sep 25 2020 ...BEACH HAZARDS STATEMENT NOW IN EFFECT UNTIL NOON PDT TODAY... * WHAT...Large swell tonight with surf heights up to 15 feet. * WHERE...Del Norte, Humboldt, and Mendocino County coastal areas. * WHEN...Until noon PDT today.. . * IMPACTS...Hazardous surf conditions, particularly along west and northwest facing beaches. Increased threat of shoaling offshore. Flat summer beach profiles may increase wave run-up onto the beaches. PRECAUTIONARY/PREPAREDNESS ACTIONS... Remain out of the water to avoid hazardous swimming conditions. && $$
303 WHUS46 KEKA 251844 CFWEKA Coastal Hazard Message National Weather Service Eureka CA 1144 AM PDT Fri Sep 25 2020 CAZ101-103-104-109-251945- /O.EXP.KEKA.BH.S.0007.000000T0000Z-200925T1900Z/ Coastal Del Norte-Northern Humboldt Coast-Southwestern Humboldt- Mendocino Coast- 1144 AM PDT Fri Sep 25 2020 ...BEACH HAZARDS STATEMENT WILL EXPIRE AT NOON PDT TODAY... $$
The office that day
Everything else NWS Eureka, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 21, 8:15 PM PDT | Small Craft Advisory | EKA | 5 days |
Nearby
Beach Hazards Statements in California, 2020Every beach hazards statement in 2020
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.