Alert archive / California / Beach Hazards Statements in 2020
Beach Hazards Statement 3, NWS Eureka, CA
NWS Eureka, CA issued this beach hazards statement at Mar 20, 2020, 5:46 AM PDT for Del Norte County, Humboldt County, Mendocino County, California. It took effect at Mar 21, 2020, 5:00 PM PDT. It was in force for 27 hr.
The area
The counties it named.
The facts
- Issued
- Mar 20, 2020, 5:46 AM PDT (12:46 UTC)
- In effect from
- Mar 21, 2020, 5:00 PM PDT
- Expired
- Mar 22, 2020, 8:00 PM PDT
- In force
- 27 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 12:51 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, 0.8 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
- 944 m above ground
- 0-6 km bulk shear
- 20 kt
- 0-1 km storm-relative helicity
- -35 m²/s²
- 0-3 km storm-relative helicity
- -22 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
087 WHUS46 KEKA 201246 CFWEKA Coastal Hazard Message National Weather Service Eureka CA 546 AM PDT Fri Mar 20 2020 CAZ101-103-109-202300- /O.NEW.KEKA.BH.S.0003.200322T0000Z-200323T0000Z/ Coastal Del Norte-Northern Humboldt Coast-Mendocino Coast- 546 AM PDT Fri Mar 20 2020 ...BEACH HAZARDS STATEMENT IN EFFECT FROM SATURDAY AFTERNOON THROUGH SUNDAY AFTERNOON... * WHAT...A westerly swell will build into the area, bringing the threat of sneaker waves. * WHERE...Coastal Del Norte, Northern Humboldt Coast, and Mendocino Coast. * WHEN...From Saturday afternoon through Sunday afternoon. * IMPACTS...Potential sneaker waves may create locally hazardous conditions at area beaches. * ADDITIONAL DETAILS...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... Maintain a safe distance from the surf, and always keep your eye on the ocean. Also, remain out of the water to avoid hazardous swimming conditions, and avoid walking on rocks or jettys. $$
10 follow-up statements
685 WHUS46 KEKA 202142 CFWEKA Coastal Hazard Message National Weather Service Eureka CA 242 PM PDT Fri Mar 20 2020 CAZ104-210545- /O.EXA.KEKA.BH.S.0003.200322T0000Z-200323T0000Z/ Southwestern Humboldt- 242 PM PDT Fri Mar 20 2020 ...BEACH HAZARDS STATEMENT IN EFFECT FROM SATURDAY AFTERNOON THROUGH SUNDAY AFTERNOON... * WHAT...A westerly swell will build into the area, bringing the threat of sneaker waves. * WHERE...Southwestern Humboldt County. * WHEN...From Saturday afternoon through Sunday afternoon. * IMPACTS...Potential sneaker waves may create locally hazardous conditions at area beaches. PRECAUTIONARY/PREPAREDNESS ACTIONS... Remain out of the water to avoid hazardous swimming conditions. && $$ CAZ101-103-109-210545- /O.CON.KEKA.BH.S.0003.200322T0000Z-200323T0000Z/ Coastal Del Norte-Northern Humboldt Coast-Mendocino Coast- 242 PM PDT Fri Mar 20 2020 ...BEACH HAZARDS STATEMENT REMAINS IN EFFECT FROM SATURDAY AFTERNOON THROUGH SUNDAY AFTERNOON... * WHAT...A westerly swell will build into the area, bringing the threat of sneaker waves. * WHERE...Coastal Del Norte, Northern Humboldt Coast, and Mendocino Coast. * WHEN...From Saturday afternoon through Sunday afternoon. * IMPACTS...Potential sneaker waves may create locally hazardous conditions at area beaches. * PRECAUTIONARY/PREPAREDNESS ACTIONS... Remain out of the water to avoid hazardous swimming conditions. && $$
100 WHUS46 KEKA 210524 CFWEKA Coastal Hazard Message National Weather Service Eureka CA 1024 PM PDT Fri Mar 20 2020 CAZ101-103-104-109-211330- /O.CON.KEKA.BH.S.0003.200322T0000Z-200323T0000Z/ Coastal Del Norte-Northern Humboldt Coast-Southwestern Humboldt- Mendocino Coast- 1024 PM PDT Fri Mar 20 2020 ...BEACH HAZARDS STATEMENT REMAINS IN EFFECT FROM SATURDAY AFTERNOON THROUGH SUNDAY AFTERNOON... * WHAT...A westerly swell will result in an enhanced threat of sneaker waves on area beaches. * WHERE...Coastal Del Norte, Humboldt Coast, and Mendocino Coast. * WHEN...From Saturday afternoon through Sunday afternoon. * IMPACTS...Potential sneaker waves may create locally hazardous conditions at area beaches. Steep beaches will have a higher risk of sneaker wave activity with greater wave run-up onto beaches. * ADDITIONAL DETAILS...A sneaker wave is a wave that washes unexpectedly far up the beach, often after a long period of much smaller waves before it. Sneaker waves can easily catch people off guard, and are very dangerous and often deadly due to the cold, turbulent ocean waters PRECAUTIONARY/PREPAREDNESS ACTIONS... Maintain a safe distance from the surf, and always keep your eye on the ocean. Also, remain out of the water to avoid hazardous swimming conditions, and avoid walking on rocks or jettys. && $$
100 WHUS46 KEKA 210958 CFWEKA Coastal Hazard Message National Weather Service Eureka CA 258 AM PDT Sat Mar 21 2020 CAZ101-103-104-109-211800- /O.CON.KEKA.BH.S.0003.200322T0000Z-200323T0000Z/ Coastal Del Norte-Northern Humboldt Coast-Southwestern Humboldt- Mendocino Coast- 258 AM PDT Sat Mar 21 2020 ...BEACH HAZARDS STATEMENT REMAINS IN EFFECT FROM THIS AFTERNOON THROUGH SUNDAY AFTERNOON... * WHAT...A westerly swell will result in an enhanced threat of sneaker waves on area beaches. * WHERE...Coastal Del Norte, Humboldt Coast, and Mendocino Coast. * WHEN...From Saturday afternoon through Sunday afternoon. * IMPACTS...Potential sneaker waves may create locally hazardous conditions at area beaches. Steep beaches will have a higher risk of sneaker wave activity with greater wave run-up onto beaches. PRECAUTIONARY/PREPAREDNESS ACTIONS... Remain out of the water to avoid hazardous swimming conditions. && $$
513 WHUS46 KEKA 211748 CFWEKA Coastal Hazard Message National Weather Service Eureka CA 1048 AM PDT Sat Mar 21 2020 CAZ101-103-104-109-220415- /O.CON.KEKA.BH.S.0003.200322T0000Z-200323T0000Z/ Coastal Del Norte-Northern Humboldt Coast-Southwestern Humboldt- Mendocino Coast- 1048 AM PDT Sat Mar 21 2020 ...BEACH HAZARDS STATEMENT REMAINS IN EFFECT FROM 5 PM PDT THIS AFTERNOON THROUGH SUNDAY AFTERNOON... * WHAT...A westerly swell will result in an enhanced threat of sneaker waves on area beaches. * WHERE...Coastal Del Norte, Humboldt Coast, and Mendocino Coast. * WHEN...From Saturday afternoon through Sunday afternoon. * IMPACTS...Potential sneaker waves may create locally hazardous conditions at area beaches. Steep beaches will have a higher risk of sneaker wave activity with greater wave run-up onto beaches. * ADDITIONAL DETAILS...A sneaker wave is a wave that washes unexpectedly far up the beach, often after a long period of much smaller waves before it. Sneaker waves can easily catch people off guard, and are very dangerous and often deadly due to the cold, turbulent ocean waters. PRECAUTIONARY/PREPAREDNESS ACTIONS... Maintain a safe distance from the surf, and always keep your eye on the ocean. Also, remain out of the water to avoid hazardous swimming conditions, and avoid walking on rocks or jettys. && $$
535 WHUS46 KEKA 220415 CFWEKA Coastal Hazard Message National Weather Service Eureka CA 915 PM PDT Sat Mar 21 2020 CAZ101-103-104-109-221215- /O.CON.KEKA.BH.S.0003.000000T0000Z-200323T0000Z/ Coastal Del Norte-Northern Humboldt Coast-Southwestern Humboldt- Mendocino Coast- 915 PM PDT Sat Mar 21 2020 ...BEACH HAZARDS STATEMENT REMAINS IN EFFECT THROUGH SUNDAY AFTERNOON... * WHAT...A westerly swell will bring an enhanced threat of sneaker waves on area beaches. * WHERE...Coastal Del Norte, Humboldt Coast, and Mendocino Coast. * WHEN...Now through Sunday afternoon. * IMPACTS...Potential sneaker waves may create locally hazardous conditions at area beaches. Steep beaches will have a higher risk of sneaker wave activity with greater wave run-up onto beaches. PRECAUTIONARY/PREPAREDNESS ACTIONS... Remain out of the water to avoid hazardous swimming conditions. && $$
109 WHUS46 KEKA 220958 CFWEKA Coastal Hazard Message National Weather Service Eureka CA 258 AM PDT Sun Mar 22 2020 CAZ101-103-104-109-221800- /O.CON.KEKA.BH.S.0003.000000T0000Z-200323T0000Z/ Coastal Del Norte-Northern Humboldt Coast-Southwestern Humboldt- Mendocino Coast- 258 AM PDT Sun Mar 22 2020 ...BEACH HAZARDS STATEMENT REMAINS IN EFFECT THROUGH THIS AFTERNOON... * WHAT...A westerly swell will bring an enhanced threat of sneaker waves on area beaches. * WHERE...Coastal Del Norte, Humboldt Coast, and Mendocino Coast. * WHEN...Now through Sunday afternoon. * IMPACTS...Potential sneaker waves may create locally hazardous conditions at area beaches. Steep beaches will have a higher risk of sneaker wave activity with greater wave run-up onto beaches. PRECAUTIONARY/PREPAREDNESS ACTIONS... Remain out of the water to avoid hazardous swimming conditions. && $$
775 WHUS46 KEKA 221751 CFWEKA Coastal Hazard Message National Weather Service Eureka CA 1051 AM PDT Sun Mar 22 2020 CAZ109-230000- /O.EXT.KEKA.BH.S.0003.000000T0000Z-200323T0300Z/ Mendocino Coast- 1051 AM PDT Sun Mar 22 2020 ...BEACH HAZARDS STATEMENT NOW IN EFFECT UNTIL 8 PM PDT THIS EVENING... * WHAT...A west to northwest swell will bring an enhanced threat of sneaker waves on area beaches. * WHERE...Coastal Del Norte, Humboldt Coast, and Mendocino Coast. * WHEN...Until 8 PM PDT this evening.. . * IMPACTS...Potential sneaker waves may create locally hazardous conditions at area beaches. Steep beaches will have a higher risk of sneaker wave activity with greater wave run-up onto beaches. PRECAUTIONARY/PREPAREDNESS ACTIONS... Remain out of the water to avoid hazardous swimming conditions. && $$ CAZ101-103-104-230000- /O.CON.KEKA.BH.S.0003.000000T0000Z-200323T0000Z/ Coastal Del Norte-Northern Humboldt Coast-Southwestern Humboldt- 1051 AM PDT Sun Mar 22 2020 ...BEACH HAZARDS STATEMENT REMAINS IN EFFECT UNTIL 5 PM PDT THIS AFTERNOON... * WHAT...A west to northwest swell will bring an enhanced threat of sneaker waves on area beaches. * WHERE...Coastal Del Norte, Humboldt Coast, and Mendocino Coast. * WHEN...Now through Sunday afternoon. * IMPACTS...Potential sneaker waves may create locally hazardous conditions at area beaches. Steep beaches will have a higher risk of sneaker wave activity with greater wave run-up onto beaches. PRECAUTIONARY/PREPAREDNESS ACTIONS... Remain out of the water to avoid hazardous swimming conditions. && $$
827 WHUS46 KEKA 221756 CFWEKA Coastal Hazard Message National Weather Service Eureka CA 1056 AM PDT Sun Mar 22 2020 CAZ101-103-104-230000- /O.CON.KEKA.BH.S.0003.000000T0000Z-200323T0000Z/ Coastal Del Norte-Northern Humboldt Coast-Southwestern Humboldt- 1056 AM PDT Sun Mar 22 2020 ...BEACH HAZARDS STATEMENT REMAINS IN EFFECT UNTIL 5 PM PDT THIS AFTERNOON... * WHAT...A west to northwest swell will bring an enhanced threat of sneaker waves on area beaches. * WHERE...Coastal Del Norte, Humboldt Coast, and Mendocino Coast. * WHEN...Now through Sunday afternoon. * IMPACTS...Potential sneaker waves may create locally hazardous conditions at area beaches. Steep beaches will have a higher risk of sneaker wave activity with greater wave run-up onto beaches. PRECAUTIONARY/PREPAREDNESS ACTIONS... Remain out of the water to avoid hazardous swimming conditions. && $$ CAZ109-230200- /O.CON.KEKA.BH.S.0003.000000T0000Z-200323T0300Z/ Mendocino Coast- 1056 AM PDT Sun Mar 22 2020 ...BEACH HAZARDS STATEMENT REMAINS IN EFFECT UNTIL 8 PM PDT THIS EVENING... * WHAT...A west to northwest swell will bring an enhanced threat of sneaker waves on area beaches. * WHERE...Mendocino Coast. * WHEN...Until 8 PM PDT this evening. * IMPACTS...Potential sneaker waves may create locally hazardous conditions at area beaches. Steep beaches will have a higher risk of sneaker wave activity with greater wave run-up onto beaches. PRECAUTIONARY/PREPAREDNESS ACTIONS... Remain out of the water to avoid hazardous swimming conditions. && $$
831 WHUS46 KEKA 222346 CFWEKA Coastal Hazard Message National Weather Service Eureka CA 446 PM PDT Sun Mar 22 2020 CAZ101-103-104-230300- /O.EXT.KEKA.BH.S.0003.000000T0000Z-200323T0300Z/ Coastal Del Norte-Northern Humboldt Coast-Southwestern Humboldt- 446 PM PDT Sun Mar 22 2020 ...BEACH HAZARDS STATEMENT REMAINS IN EFFECT UNTIL 8 PM PDT THIS EVENING... * WHAT...A west to northwest swell will bring an enhanced threat of sneaker waves on area beaches. * WHERE...Coastal Del Norte, Humboldt Coast, and Mendocino Coast. * WHEN...Until 8 PM PDT this evening.. . * IMPACTS...Potential sneaker waves may create locally hazardous conditions at area beaches. Steep beaches will have a higher risk of sneaker wave activity with greater wave run-up onto beaches. PRECAUTIONARY/PREPAREDNESS ACTIONS... Remain out of the water to avoid hazardous swimming conditions. && $$ CAZ109-230300- /O.CON.KEKA.BH.S.0003.000000T0000Z-200323T0300Z/ Mendocino Coast- 446 PM PDT Sun Mar 22 2020 ...BEACH HAZARDS STATEMENT REMAINS IN EFFECT UNTIL 8 PM PDT THIS EVENING... * WHAT...A west to northwest swell will bring an enhanced threat of sneaker waves on area beaches. * WHERE...Mendocino Coast. * WHEN...Until 8 PM PDT this evening. * IMPACTS...Potential sneaker waves may create locally hazardous conditions at area beaches. Steep beaches will have a higher risk of sneaker wave activity with greater wave run-up onto beaches. PRECAUTIONARY/PREPAREDNESS ACTIONS... Remain out of the water to avoid hazardous swimming conditions. && $$
380 WHUS46 KEKA 230319 CFWEKA Coastal Hazard Message National Weather Service Eureka CA 819 PM PDT Sun Mar 22 2020 CAZ101-103-104-109-230430- /O.EXP.KEKA.BH.S.0003.000000T0000Z-200323T0300Z/ Coastal Del Norte-Northern Humboldt Coast-Southwestern Humboldt- Mendocino Coast- 819 PM PDT Sun Mar 22 2020 ...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 |
|---|---|---|---|---|
| Mar 20, 2:39 PM PDT | Frost Advisory | EKA | Lake, Mendocino | 18 hr |
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.