Alert archive / California / Beach Hazards Statements in 2020
Beach Hazards Statement 13, NWS Los Angeles, CA
NWS Los Angeles, CA issued this beach hazards statement at Dec 9, 2020, 9:42 PM PST for Los Angeles County, California. It was in force for 11 hr.
The area
The counties it named.
The facts
- Issued
- Dec 9, 2020, 9:42 PM PST (05:42 UTC)
- Expired
- Dec 10, 2020, 9:00 AM PST
- In force
- 11 hr
- Issued by
- NWS Los Angeles, CA
County Los Angeles County, CA
The radar
The Santa Ana Mts radar (KSOX), 71 km from the middle of the area, began a volume at 05:47 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
San Diego, CA (KNKX), launched 00:00Z, 5.7 hours before the alert went out and 184 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
- 1845 m above ground
- 0-6 km bulk shear
- 30 kt
- 0-1 km storm-relative helicity
- 19 m²/s²
- 0-3 km storm-relative helicity
- 105 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
836 WHUS46 KLOX 100542 CFWLOX Coastal Hazard Message National Weather Service Los Angeles/Oxnard CA 942 PM PST Wed Dec 9 2020 CAZ034-035-101345- /O.NEW.KLOX.SU.Y.0019.201210T0542Z-201210T1700Z/ San Luis Obispo County Central Coast- Santa Barbara County Central Coast- 942 PM PST Wed Dec 9 2020 ...HIGH SURF ADVISORY IN EFFECT UNTIL 9 AM PST THURSDAY... * WHAT...Large breaking waves of 8-12 feet with dangerous rip currents. * WHERE...San Luis Obispo County Central Coast and Santa Barbara County Central Coast. * WHEN...Until 9 AM PST Thursday. * IMPACTS...There is an increased risk for ocean drowning. Rip currents can pull swimmers and surfers out to sea. Large breaking waves can cause injury, wash people off beaches and rocks, and capsize small boats near shore. PRECAUTIONARY/PREPAREDNESS ACTIONS... Remain out of the water due to dangerous surf conditions, or stay near occupied lifeguard towers. Rock jetties can be deadly in such conditions, stay off the rocks. && $$ CAZ040-041-087-101345- /O.NEW.KLOX.BH.S.0013.201210T0542Z-201210T1700Z/ Ventura County Coast- Los Angeles County Coast including Downtown Los Angeles- Catalina and Santa Barbara Islands- 942 PM PST Wed Dec 9 2020 ...BEACH HAZARDS STATEMENT IN EFFECT UNTIL 9 AM PST THURSDAY... * WHAT...Dangerous rip currents and breaking waves 4 to 7 feet are expected due to elevated surf along exposed west facing beaches. * WHERE...Ventura County Coast, Los Angeles County Coast and Catalina and Santa Barbara Islands. * WHEN...Until 9 AM PST Thursday. * IMPACTS...There is an increased risk of ocean drowning. Rip currents can pull swimmers and surfers out to sea. Waves can wash people off beaches and rocks, and capsize small boats nearshore. PRECAUTIONARY/PREPAREDNESS ACTIONS... Remain out of the water due to hazardous swimming conditions, or stay near occupied lifeguard towers. Rock jetties can be deadly in such conditions, stay off the rocks. && $$ CK
2 follow-up statements
704 WHUS46 KLOX 101121 CFWLOX Coastal Hazard Message National Weather Service Los Angeles/Oxnard CA 321 AM PST Thu Dec 10 2020 CAZ034-035-101700- /O.CON.KLOX.SU.Y.0019.000000T0000Z-201210T1700Z/ San Luis Obispo County Central Coast- Santa Barbara County Central Coast- 321 AM PST Thu Dec 10 2020 ...HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 9 AM PST THIS MORNING... * WHAT...Large breaking waves of 8-12 feet with dangerous rip currents. * WHERE...San Luis Obispo County Central Coast and Santa Barbara County Central Coast. * WHEN...Until 9 AM PST Today. * IMPACTS...There is an increased risk for ocean drowning. Rip currents can pull swimmers and surfers out to sea. Large breaking waves can cause injury, wash people off beaches and rocks, and capsize small boats near shore. PRECAUTIONARY/PREPAREDNESS ACTIONS... Remain out of the water due to dangerous surf conditions, or stay near occupied lifeguard towers. Rock jetties can be deadly in such conditions, stay off the rocks. && $$ CAZ040-041-087-101700- /O.CON.KLOX.BH.S.0013.000000T0000Z-201210T1700Z/ Ventura County Coast- Los Angeles County Coast including Downtown Los Angeles- Catalina and Santa Barbara Islands- 321 AM PST Thu Dec 10 2020 ...BEACH HAZARDS STATEMENT REMAINS IN EFFECT UNTIL 9 AM PST THIS MORNING... * WHAT...Dangerous rip currents and breaking waves 4 to 7 feet are expected due to elevated surf along exposed west facing beaches. * WHERE...Ventura County Coast, Los Angeles County Coast and Catalina and Santa Barbara Islands. * WHEN...Until 9 AM PST Today. * IMPACTS...There is an increased risk of ocean drowning. Rip currents can pull swimmers and surfers out to sea. Waves can wash people off beaches and rocks, and capsize small boats nearshore. PRECAUTIONARY/PREPAREDNESS ACTIONS... Remain out of the water due to hazardous swimming conditions, or stay near occupied lifeguard towers. Rock jetties can be deadly in such conditions, stay off the rocks. && $$ Phillips
965 WHUS46 KLOX 101706 CFWLOX Coastal Hazard Message National Weather Service Los Angeles/Oxnard CA 906 AM PST Thu Dec 10 2020 CAZ034-035-101815- /O.EXP.KLOX.SU.Y.0019.000000T0000Z-201210T1700Z/ San Luis Obispo County Central Coast- Santa Barbara County Central Coast- 906 AM PST Thu Dec 10 2020 ...HIGH SURF ADVISORY HAS EXPIRED... Local sets to 10 feet are still possible today. $$ CAZ040-041-087-102300- /O.EXP.KLOX.BH.S.0013.000000T0000Z-201210T1700Z/ /O.NEW.KLOX.BH.S.0014.201210T1706Z-201210T2300Z/ Ventura County Coast- Los Angeles County Coast including Downtown Los Angeles- Catalina and Santa Barbara Islands- 906 AM PST Thu Dec 10 2020 ...BEACH HAZARDS STATEMENT IN EFFECT UNTIL 3 PM PST THIS AFTERNOON... * WHAT...Dangerous rip currents and breaking waves 3 to 6 feet are expected due to elevated surf along exposed west facing beaches into this afternoon. * WHERE...Ventura County Coast, Los Angeles County Coast and Catalina and Santa Barbara Islands. * WHEN...Until 3 PM PST this afternoon. * IMPACTS...There is an increased risk of ocean drowning. Rip currents can pull swimmers and surfers out to sea. Waves can wash people off beaches and rocks, and capsize small boats nearshore. PRECAUTIONARY/PREPAREDNESS ACTIONS... Remain out of the water due to hazardous swimming conditions, or stay near occupied lifeguard towers. Rock jetties can be deadly in such conditions, stay off the rocks. && $$ Sweet
The office that day
Everything else NWS Los Angeles, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 9, 8:46 PM PST | Small Craft Advisory | LOX | 3 days | |
| Dec 9, 9:42 PM PST | High Surf Advisory | LOX | 11 hr | |
| Dec 10, 2:17 AM PST | Wind Advisory | LOX | 29 hr | |
| Dec 10, 9:06 AM PST | Beach Hazards Statement | LOX | Los Angeles | 5 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.