Alert archive / California / High Surf Advisories in 2012
High Surf Advisory 7, NWS Los Angeles, CA
NWS Los Angeles, CA issued this high surf advisory at Feb 13, 2012, 1:48 AM PST for Los Angeles County, California. It took effect at Feb 13, 2012, 2:00 PM PST. It was in force for 30 hr.
The area
The counties it named.
The facts
- Issued
- Feb 13, 2012, 1:48 AM PST (09:48 UTC)
- In effect from
- Feb 13, 2012, 2:00 PM PST
- Expired
- Feb 14, 2012, 8:00 PM PST
- In force
- 30 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 09:50 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, 9.8 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
- 21 J/kg
- Mixed-layer CIN
- -2 J/kg
- Mixed-layer LCL
- 746 m above ground
- 0-6 km bulk shear
- 43 kt
- 0-1 km storm-relative helicity
- -57 m²/s²
- 0-3 km storm-relative helicity
- -11 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 advisory 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 advisory went out at Feb 12, 9:50 PM PST, 3 hours 58 minutes earlier.
Area forecast discussion, Feb 12, 9:50 PM PST, 3 hours 58 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 |
|---|---|---|---|---|
| Feb 13, 1:14 PM PST | Gale Warning | LOX | 20 hr | |
| Feb 13, 1:14 PM PST | Small Craft Advisory | LOX | 3 hr |
Nearby
High Surf Advisories in California, 2012Every high surf advisory in 2012
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.