Alert archive / California / Beach Hazards Statements in 2023
Beach Hazards Statement 2, NWS Eureka, CA
NWS Eureka, CA issued this beach hazards statement at Jan 22, 2023, 6:03 AM PST for Del Norte County, Humboldt County, Mendocino County, California. It took effect at Jan 23, 2023, 4:00 PM PST. It was in force for 26 hr.
The area
The counties it named.
The facts
- Issued
- Jan 22, 2023, 6:03 AM PST (14:03 UTC)
- In effect from
- Jan 23, 2023, 4:00 PM PST
- Expired
- Jan 24, 2023, 6:00 PM PST
- In force
- 26 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 14:03 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, 2.1 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
- 557 m above ground
- 0-6 km bulk shear
- 92 kt
- 0-1 km storm-relative helicity
- -22 m²/s²
- 0-3 km storm-relative helicity
- 283 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
404 WHUS46 KEKA 221403 CFWEKA Coastal Hazard Message National Weather Service Eureka CA 603 AM PST Sun Jan 22 2023 ...A New Long Period Swell Builds in Monday Afternoon... Forerunners of this long period westerly swell will arrive Monday afternoon when the risk for sneaker waves begins. Large sets of waves will sweep in after long lulls in wave activity. The swell will build up to 12 feet at 18 seconds by Tuesday morning. 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. Very high tides and large tidal swings are expected. This may cause localized coastal flooding around Humboldt Bay. CAZ103-222215- /O.NEW.KEKA.BH.S.0002.230124T0000Z-230125T0200Z/ /O.CON.KEKA.CF.Y.0004.230122T1800Z-230122T2200Z/ Northern Humboldt Coast- 603 AM PST Sun Jan 22 2023 ...COASTAL FLOOD ADVISORY REMAINS IN EFFECT FROM 10 AM THIS MORNING TO 2 PM PST THIS AFTERNOON... ...BEACH HAZARDS STATEMENT IN EFFECT FROM MONDAY AFTERNOON THROUGH TUESDAY AFTERNOON... * WHAT...For the Coastal Flood Advisory, High astronomical tides will cause minor flooding in low lying areas along the Humboldt Coast. Up to one half foot of saltwater inundation above ground level is possible in low lying areas near shorelines and tidal waterways (Around 8.8 feet MLLW at the North Spit tide gauge). For the Beach Hazards Statement, large unexpected waves along the coast. * WHERE...Northern Humboldt Coast County. * WHEN...For the Coastal Flood Advisory, from 10 AM this morning to 2 PM PST this afternoon. For the Beach Hazards Statement, from Monday afternoon through Tuesday afternoon.. . * IMPACTS...Flooding of lots, parks, and roads with only isolated road closures expected. 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... A Coastal Flood Advisory indicates that onshore winds and tides will combine to generate flooding of low areas along the shore. Feet Above Ground is locally defined as feet above the Highest Astronomical Tide or HAT. 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. && $$ CAZ101-104-109-222215- /O.NEW.KEKA.BH.S.0002.230124T0000Z-230125T0200Z/ Coastal Del Norte-Southwestern Humboldt-Mendocino Coast- 603 AM PST Sun Jan 22 2023 ...BEACH HAZARDS STATEMENT IN EFFECT FROM MONDAY AFTERNOON THROUGH TUESDAY AFTERNOON... * WHAT...Large unexpected waves along the coast. * WHERE...Coastal Del Norte, Southwestern Humboldt and Mendocino Coast Counties. * WHEN...From Monday afternoon through Tuesday afternoon.. . * IMPACTS...Large, unexpected waves can sweep across the beach without warning, sweeping people into the sea from rocks, jetties, and beaches. These waves can also move large objects such as logs, crushing anyone caught underneath. PRECAUTIONARY/PREPAREDNESS ACTIONS... Don't be fooled by an ocean that looks calm. There can be 30 minutes of small waves before a sneaker wave strikes. Avoid rocks and jetties. Avoid steep beaches. Stay much farther back from the water and never turn your back on the ocean. && $$
8 follow-up statements
893 WHUS46 KEKA 222158 CFWEKA Coastal Hazard Message National Weather Service Eureka CA 158 PM PST Sun Jan 22 2023 ...A New Long Period Swell Builds in Monday Afternoon... Forerunners of this long period westerly swell will arrive Monday afternoon when the risk for sneaker waves begins. Large sets of waves will sweep in after long lulls in wave activity. The swell will build up to 12 feet at 18 seconds by Tuesday morning. 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. In addition to the waves...high tides and large tidal swings are expected during the late morning hours each day through Tuesday and may cause localized coastal flooding around Humboldt Bay. CAZ103-230600- /O.CAN.KEKA.CF.Y.0004.000000T0000Z-230122T2200Z/ /O.CON.KEKA.BH.S.0002.230124T0000Z-230125T0200Z/ Northern Humboldt Coast- 158 PM PST Sun Jan 22 2023 ...BEACH HAZARDS STATEMENT REMAINS IN EFFECT FROM MONDAY AFTERNOON THROUGH TUESDAY AFTERNOON... * WHAT...Large unexpected waves along the coast. * WHERE...Northern Humboldt Coast County. * WHEN...From Monday afternoon 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. && $$ CAZ101-104-109-230600- /O.CON.KEKA.BH.S.0002.230124T0000Z-230125T0200Z/ Coastal Del Norte-Southwestern Humboldt-Mendocino Coast- 158 PM PST Sun Jan 22 2023 ...BEACH HAZARDS STATEMENT REMAINS IN EFFECT FROM MONDAY AFTERNOON THROUGH TUESDAY AFTERNOON... * WHAT...Large unexpected waves along the coast. * WHERE...Coastal Del Norte, Southwestern Humboldt and Mendocino Coast Counties. * WHEN...From Monday afternoon through Tuesday afternoon.. . * IMPACTS...Large, unexpected waves can sweep across the beach without warning, sweeping people into the sea from rocks, jetties, and beaches. These waves can also move large objects such as logs, crushing anyone caught underneath. PRECAUTIONARY/PREPAREDNESS ACTIONS... Don't be fooled by an ocean that looks calm. There can be 30 minutes of small waves before a sneaker wave strikes. Avoid rocks and jetties. Avoid steep beaches. Stay much farther back from the water and never turn your back on the ocean. && $$
869 WHUS46 KEKA 230450 CFWEKA Coastal Hazard Message National Weather Service Eureka CA 850 PM PST Sun Jan 22 2023 ...A New Long Period Swell Builds in Monday Afternoon... Forerunners of this long period westerly swell will arrive Monday afternoon when the risk for sneaker waves begins. Large sets of waves will sweep in after long lulls in wave activity. The swell will build up to 12 feet at 18 seconds by Tuesday morning. 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. In addition to the waves...high tides and large tidal swings are expected during the late morning hours each day through Tuesday and may cause localized coastal flooding around Humboldt Bay. CAZ101-103-104-109-231300- /O.CON.KEKA.BH.S.0002.230124T0000Z-230125T0200Z/ Coastal Del Norte-Northern Humboldt Coast-Southwestern Humboldt- Mendocino Coast- 850 PM PST Sun Jan 22 2023 ...BEACH HAZARDS STATEMENT REMAINS IN EFFECT FROM MONDAY AFTERNOON THROUGH TUESDAY AFTERNOON... * WHAT...Periods of unexpected larger waves along the coast. * WHERE...Coastal Del Norte, Northern Humboldt Coast, Southwestern Humboldt and Mendocino Coast Counties. * WHEN...From Monday afternoon 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. && $$
949 WHUS46 KEKA 231058 CFWEKA Coastal Hazard Message National Weather Service Eureka CA 258 AM PST Mon Jan 23 2023 ...A New Long Period Swell Builds in Monday Afternoon... Forerunners of this long period westerly swell will arrive this afternoon when the risk for sneaker waves begins. Large sets of waves will sweep in after long lulls in wave activity. The swell will build up to 12 feet at 18 seconds by Tuesday morning. Steep beaches will have a higher risk of sneaker wave activity with greater wave run- up onto beaches. Large waves will also wash over jetties and rock outcroppings that may normally stay dry. In addition to the waves...high tides and large tidal swings are expected during the late morning hours each day through Tuesday and may cause localized coastal flooding around Humboldt Bay. CAZ101-103-104-109-231900- /O.CON.KEKA.BH.S.0002.230124T0000Z-230125T0200Z/ Coastal Del Norte-Northern Humboldt Coast-Southwestern Humboldt- Mendocino Coast- 258 AM PST Mon Jan 23 2023 ...BEACH HAZARDS STATEMENT REMAINS IN EFFECT FROM THIS AFTERNOON THROUGH TUESDAY AFTERNOON... * WHAT...Periods of unexpected larger waves along the coast. * WHERE...Coastal Del Norte, Northern Humboldt Coast, Southwestern Humboldt and Mendocino Coast Counties. * WHEN...From this afternoon through Tuesday afternoon. * IMPACTS...Large, unexpected waves can sweep across the beach without warning, sweeping people into the sea from rocks, jetties, and beaches. These waves can also move large objects such as logs, crushing anyone caught underneath. PRECAUTIONARY/PREPAREDNESS ACTIONS... Don't be fooled by an ocean that looks calm. There can be 30 minutes of small waves before a sneaker wave strikes. Avoid rocks and jetties. Avoid steep beaches. Stay much farther back from the water and never turn your back on the ocean. && $$
200 WHUS46 KEKA 232150 CFWEKA Coastal Hazard Message National Weather Service Eureka CA 150 PM PST Mon Jan 23 2023 ...A New Long Period Swell Builds in Monday Afternoon... Forerunners of this long period westerly swell will arrive this afternoon when the risk for sneaker waves begins. Large sets of waves will sweep in after long lulls in wave activity. The swell will build up to 12 feet at 18 seconds by Tuesday morning. 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. In addition to the waves...high tides and large tidal swings are expected during the late morning hours each day through Tuesday and may cause localized coastal flooding around Humboldt Bay. CAZ101-103-104-109-240600- /O.CON.KEKA.BH.S.0002.230124T0000Z-230125T0200Z/ Coastal Del Norte-Northern Humboldt Coast-Southwestern Humboldt- Mendocino Coast- 150 PM PST Mon Jan 23 2023 ...BEACH HAZARDS STATEMENT REMAINS IN EFFECT THROUGH TUESDAY AFTERNOON... * WHAT...Periods of unexpected larger waves along the coast. * WHERE...Coastal Del Norte, Northern Humboldt Coast, Southwestern Humboldt and Mendocino Coast Counties. * WHEN...From this afternoon 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. && $$
544 WHUS46 KEKA 240555 CFWEKA Coastal Hazard Message National Weather Service Eureka CA 955 PM PST Mon Jan 23 2023 ...A New Long Period Swell Continues to Build in Tuesday... Forerunners of this long period westerly swell continue to arrive this evening and the risk for sneaker waves begins. Large sets of waves will sweep in after long lulls in wave activity. The swell will build up to 12 feet at 18 seconds by Tuesday morning. CAZ101-103-104-109-241400- /O.CON.KEKA.BH.S.0002.000000T0000Z-230125T0200Z/ Coastal Del Norte-Northern Humboldt Coast-Southwestern Humboldt- Mendocino Coast- 955 PM PST Mon Jan 23 2023 ...BEACH HAZARDS STATEMENT REMAINS IN EFFECT THROUGH TUESDAY AFTERNOON... * WHAT...Large unexpected waves along the coast. * WHERE...Coastal Del Norte, Northern Humboldt Coast, Southwestern Humboldt and Mendocino Coast Counties. * WHEN...Through Tuesday afternoon.. . * IMPACTS...Large, unexpected waves can sweep across the beach without warning, sweeping people into the sea from rocks, jetties, and beaches. These waves can also move large objects such as logs, crushing anyone caught underneath. PRECAUTIONARY/PREPAREDNESS ACTIONS... Don't be fooled by an ocean that looks calm. There can be 30 minutes of small waves before a sneaker wave strikes. Avoid rocks and jetties. Avoid steep beaches. Stay much farther back from the water and never turn your back on the ocean. && $$
789 WHUS46 KEKA 241235 CFWEKA Coastal Hazard Message National Weather Service Eureka CA 435 AM PST Tue Jan 24 2023 ...A New Long Period Swell Continues to Build in Tuesday... Forerunners of this long period westerly swell continue to arrive this evening and the risk for sneaker waves begins. Large sets of waves will sweep in after long lulls in wave activity. The swell will build up to 12 feet at 18 seconds by Tuesday morning. CAZ101-103-104-109-242045- /O.CON.KEKA.BH.S.0002.000000T0000Z-230125T0200Z/ Coastal Del Norte-Northern Humboldt Coast-Southwestern Humboldt- Mendocino Coast- 435 AM PST Tue Jan 24 2023 ...BEACH HAZARDS STATEMENT REMAINS IN EFFECT THROUGH LATE THIS AFTERNOON... * WHAT...Large unexpected waves along the coast. * WHERE...Coastal Del Norte, Northern Humboldt Coast, Southwestern Humboldt and Mendocino Coast Counties. * WHEN...Through late 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. && $$
382 WHUS46 KEKA 242032 CFWEKA Coastal Hazard Message National Weather Service Eureka CA 1232 PM PST Tue Jan 24 2023 ...A New Long Period Swell Continues to Build in Tuesday... Forerunners of this long period westerly swell continue to arrive this evening and the risk for sneaker waves begins. Large sets of waves will sweep in after long lulls in wave activity. The swell will build up to 12 feet at 18 seconds by Tuesday morning. CAZ101-103-104-109-250200- /O.CON.KEKA.BH.S.0002.000000T0000Z-230125T0200Z/ Coastal Del Norte-Northern Humboldt Coast-Southwestern Humboldt- Mendocino Coast- 1232 PM PST Tue Jan 24 2023 ...BEACH HAZARDS STATEMENT REMAINS IN EFFECT THROUGH THIS EVENING... * WHAT...Large unexpected waves along the coast. * WHERE...Coastal Del Norte, Northern Humboldt Coast, Southwestern Humboldt and Mendocino Coast Counties. * WHEN...Through this evening.. . * IMPACTS...Large, unexpected waves can sweep across the beach without warning, sweeping people into the sea from rocks, jetties, and beaches. These waves can also move large objects such as logs, crushing anyone caught underneath. PRECAUTIONARY/PREPAREDNESS ACTIONS... Don't be fooled by an ocean that looks calm. There can be 30 minutes of small waves before a sneaker wave strikes. Avoid rocks and jetties. Avoid steep beaches. Stay much farther back from the water and never turn your back on the ocean. && $$
824 WHUS46 KEKA 250155 CFWEKA Coastal Hazard Message National Weather Service Eureka CA 555 PM PST Tue Jan 24 2023 CAZ101-103-104-109-250300- /O.EXP.KEKA.BH.S.0002.000000T0000Z-230125T0200Z/ Coastal Del Norte-Northern Humboldt Coast-Southwestern Humboldt- Mendocino Coast- 555 PM PST Tue Jan 24 2023 ...BEACH HAZARDS STATEMENT WILL EXPIRE AT 6 PM PST THIS EVENING... $$
The office that day
Everything else NWS Eureka, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 22, 3:05 AM PST | Gale Warning | EKA | 42 hr |
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.