Alert archive / California / High Surf Warnings in 2023
High Surf Warning 1, NWS Los Angeles, CA
NWS Los Angeles, CA issued this high surf warning at Jan 3, 2023, 12:59 PM PST for San Luis Obispo County, Santa Barbara County, Ventura County, California. It took effect at Jan 5, 2023, 6:00 AM PST. It was in force for 31 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Jan 3, 2023, 12:59 PM PST (20:59 UTC)
- In effect from
- Jan 5, 2023, 6:00 AM PST
- Expired
- Jan 6, 2023, 1:00 PM PST
- In force
- 31 hr
- Issued by
- NWS Los Angeles, CA
Counties San Luis Obispo County, CA, Santa Barbara County, CA, Ventura County, CA
The radar
The Vandenberg AFB radar (KVBX), 49 km from the middle of the area, began a volume at 21:04 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 12:00Z, 9.0 hours before the alert went out and 329 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
- 32 J/kg
- Mixed-layer CIN
- -3 J/kg
- Mixed-layer LCL
- 543 m above ground
- 0-6 km bulk shear
- 71 kt
- 0-1 km storm-relative helicity
- 232 m²/s²
- 0-3 km storm-relative helicity
- 368 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this high surf warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Los Angeles, CA wrote its last area forecast discussion before this high surf warning went out at Jan 3, 9:43 AM PST, 3 hours 16 minutes earlier.
Area forecast discussion, Jan 3, 9:43 AM PST, 3 hours 16 minutes before
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</html>The office that day
Everything else NWS Los Angeles, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 2, 7:26 PM PST | Beach Hazards Statement | LOX | Los Angeles, Santa Barbara, Ventura | 18 hr |
| Jan 2, 7:26 PM PST | High Surf Advisory | LOX | San Luis Obispo, Santa Barbara, Ventura | 59 hr |
| Jan 3, 11:41 AM PST | Flood Watch | LOX | Los Angeles, San Luis Obispo, Santa Barbara, Ventura | 48 hr |
| Jan 3, 12:59 PM PST | High Surf Advisory | LOX | Los Angeles, San Luis Obispo, Santa Barbara, Ventura | 16 days |
| Jan 3, 1:30 PM PST | Gale Warning | LOX | 37 hr |
Nearby
High Surf Warnings in California, 2023Every high surf warning 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.