Alert archive / California / Beach Hazards Statements in 2020
Beach Hazards Statement 5, NWS Eureka, CA
NWS Eureka, CA issued this beach hazards statement at Apr 18, 2020, 9:35 PM PDT for Del Norte County, Humboldt County, Mendocino County, California. It took effect at Apr 19, 2020, 9:00 PM PDT. It was in force for 24 hr.
The area
The counties it named.
The facts
- Issued
- Apr 18, 2020, 9:35 PM PDT (04:35 UTC)
- In effect from
- Apr 19, 2020, 9:00 PM PDT
- Expired
- Apr 20, 2020, 9:02 PM PDT
- In force
- 24 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 04:39 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 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
- 1 J/kg
- Mixed-layer CIN
- -116 J/kg
- Mixed-layer LCL
- 1887 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- 11 m²/s²
- 0-3 km storm-relative helicity
- 89 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
538 WHUS46 KEKA 190435 CFWEKA Coastal Hazard Message National Weather Service Eureka CA 935 PM PDT Sat Apr 18 2020 CAZ101-103-104-109-191300- /O.NEW.KEKA.BH.S.0005.200420T0400Z-200421T0700Z/ Coastal Del Norte-Northern Humboldt Coast-Southwestern Humboldt- Mendocino Coast- 935 PM PDT Sat Apr 18 2020 ...HIGH RISK OF SNEAKER WAVES FROM SUNDAY EVENING THROUGH MONDAY EVENING... * WHAT...A long period westerly swell will bring a high risk of sneaker waves to area beaches. * WHERE...Coastal Del Norte, Humboldt, and Mendocino Coast counties. * WHEN...From Sunday evening through Monday 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. Large waves will also wash over jetties and rock outcroppings that normally stay dry. PRECAUTIONARY/PREPAREDNESS ACTIONS... Remain out of the water to avoid hazardous swimming conditions. Never turn your back on the ocean. $$
6 follow-up statements
227 WHUS46 KEKA 191301 CFWEKA Coastal Hazard Message National Weather Service Eureka CA 601 AM PDT Sun Apr 19 2020 CAZ101-103-104-109-192115- /O.CON.KEKA.BH.S.0005.200420T0400Z-200421T0700Z/ Coastal Del Norte-Northern Humboldt Coast-Southwestern Humboldt- Mendocino Coast- 601 AM PDT Sun Apr 19 2020 ...BEACH HAZARDS STATEMENT REMAINS IN EFFECT FROM THIS EVENING THROUGH MONDAY EVENING... ...HIGH RISK OF SNEAKER WAVES FROM THIS EVENING THROUGH MONDAY EVENING... * WHAT...A long period westerly swell will bring a high risk of sneaker waves to area beaches. * WHERE...Coastal Del Norte, Humboldt, and Mendocino Coast counties. * WHEN...From this evening through Monday evening. * IMPACTS...Potential sneaker waves may create locally hazardous conditions at area beaches. Steep beaches will have a higher risk of sneaker wave activity with greater wave run-up onto beaches. Large waves will also wash over jetties and rock outcroppings that normally stay dry. *PRECAUTIONARY/PREPAREDNESS ACTIONS... Remain out of the water to avoid hazardous swimming conditions. && $$
702 WHUS46 KEKA 192003 CFWEKA Coastal Hazard Message National Weather Service Eureka CA 103 PM PDT Sun Apr 19 2020 CAZ101-103-104-109-200415- /O.CON.KEKA.BH.S.0005.200420T0400Z-200421T0700Z/ Coastal Del Norte-Northern Humboldt Coast-Southwestern Humboldt- Mendocino Coast- 103 PM PDT Sun Apr 19 2020 ...BEACH HAZARDS STATEMENT REMAINS IN EFFECT FROM 9 PM PDT THIS EVENING THROUGH MONDAY EVENING... * WHAT...A long period westerly swell will bring a high risk of sneaker waves to area beaches. * WHERE...Coastal Del Norte, Humboldt, and Mendocino Coast counties. * WHEN...From this late evening through Monday 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. Large waves will also wash over jetties and rock outcroppings that normally stay dry. PRECAUTIONARY/PREPAREDNESS ACTIONS... Remain out of the water to avoid hazardous swimming conditions. && $$
798 WHUS46 KEKA 200415 CFWEKA Coastal Hazard Message National Weather Service Eureka CA 915 PM PDT Sun Apr 19 2020 CAZ101-103-104-109-201215- /O.CON.KEKA.BH.S.0005.000000T0000Z-200421T0700Z/ Coastal Del Norte-Northern Humboldt Coast-Southwestern Humboldt- Mendocino Coast- 915 PM PDT Sun Apr 19 2020 ...BEACH HAZARDS STATEMENT REMAINS IN EFFECT THROUGH MONDAY EVENING... * WHAT...A long period westerly swell will bring a high risk of sneaker waves to area beaches. * WHERE...Coastal Del Norte, Humboldt, and Mendocino Coast counties. * WHEN...From late this evening through Monday evening. * IMPACTS...Potential sneaker waves may create locally hazardous conditions at area beaches. Steep beaches will have a higher risk of sneaker wave activity with greater wave run-up onto beaches. Large waves will also wash over jetties and rock outcroppings that normally stay dry. PRECAUTIONARY/PREPAREDNESS ACTIONS... Remain out of the water to avoid hazardous swimming conditions. Never turn your back on the ocean. $$
802 WHUS46 KEKA 201200 CFWEKA Coastal Hazard Message National Weather Service Eureka CA 500 AM PDT Mon Apr 20 2020 CAZ101-103-104-109-202000- /O.CON.KEKA.BH.S.0005.000000T0000Z-200421T0700Z/ Coastal Del Norte-Northern Humboldt Coast-Southwestern Humboldt- Mendocino Coast- 500 AM PDT Mon Apr 20 2020 ...BEACH HAZARDS STATEMENT REMAINS IN EFFECT THROUGH THIS EVENING... * WHAT...A long period westerly swell will bring a high risk of sneaker waves to area beaches. * WHERE...Coastal Del Norte, Humboldt, and Mendocino Coast counties. * WHEN...Now through 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. Large waves will also wash over jetties and rock outcroppings that normally stay dry. PRECAUTIONARY/PREPAREDNESS ACTIONS... Remain out of the water to avoid hazardous swimming conditions. Never turn your back on the ocean. && $$
932 WHUS46 KEKA 201947 CFWEKA Coastal Hazard Message National Weather Service Eureka CA 1247 PM PDT Mon Apr 20 2020 CAZ101-103-104-109-210400- /O.CON.KEKA.BH.S.0005.000000T0000Z-200421T0700Z/ Coastal Del Norte-Northern Humboldt Coast-Southwestern Humboldt- Mendocino Coast- 1247 PM PDT Mon Apr 20 2020 ...BEACH HAZARDS STATEMENT REMAINS IN EFFECT UNTIL MIDNIGHT PDT TONIGHT... * WHAT...A long period westerly swell will bring a high risk of sneaker waves to area beaches. * WHERE...Coastal Del Norte, Coastal Humboldt, and Mendocino Coast. * WHEN...Through this evening. * IMPACTS...Potential sneaker waves may create locally hazardous conditions at area beaches. Steep beaches will have a higher risk of sneaker wave activity with greater wave run-up onto beaches. Large waves will also wash over jetties and rock outcroppings that normally stay dry. PRECAUTIONARY/PREPAREDNESS ACTIONS... Remain out of the water to avoid hazardous swimming conditions. Never turn your back on the ocean. && $$
982 WHUS46 KEKA 210402 CFWEKA Coastal Hazard Message National Weather Service Eureka CA 902 PM PDT Mon Apr 20 2020 CAZ101-103-104-109-210515- /O.CAN.KEKA.BH.S.0005.000000T0000Z-200421T0700Z/ Coastal Del Norte-Northern Humboldt Coast-Southwestern Humboldt- Mendocino Coast- 902 PM PDT Mon Apr 20 2020 ...BEACH HAZARDS STATEMENT IS CANCELLED... $$
The office that day
Everything else NWS Eureka, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 19, 2:28 PM PDT | Small Craft Advisory | EKA | 54 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.