Alert archive / California / High Surf Advisories in 2015

High Surf Advisory 3, NWS Los Angeles, CA

February 6, 2015Los Angeles County, California

NWS Los Angeles, CA issued this high surf advisory at Feb 6, 2015, 7:30 PM PST for Los Angeles County, California. It took effect at Feb 7, 2015, 4:00 AM PST. It was in force for 4 days.

The area

The counties it named.

The facts

Issued
Feb 6, 2015, 7:30 PM PST (03:30 UTC)
In effect from
Feb 7, 2015, 4:00 AM PST
Expired
Feb 11, 2015, 6:55 AM PST
In force
4 days
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 03:27 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, 3.5 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.

Skew-T log-pSkew-T log-p diagram, San Diego, CA at 00:00Z on 2015-02-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, San Diego, CA at 00:00Z on 2015-02-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 40 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
2991 m above ground
0-6 km bulk shear
34 kt
0-1 km storm-relative helicity
40 m²/s²
0-3 km storm-relative helicity
56 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

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 6, 2:15 PM PST, 5 hours 15 minutes earlier.

Area forecast discussion, Feb 6, 2:15 PM PST, 5 hours 15 minutes before
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Hazardous weather outlook, Feb 6, 6:00 AM PST, 13 hours 30 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE LOS ANGELES/OXNARD CA
600 AM PST FRI FEB 6 2015

CAZ034>041-044>046-051>054-059-087-088-547-548-071400-
SAN LUIS OBISPO COUNTY CENTRAL COAST-
SANTA BARBARA COUNTY CENTRAL COAST-SANTA YNEZ VALLEY-
SAN LUIS OBISPO COUNTY INTERIOR VALLEYS-CUYAMA VALLEY-
SANTA BARBARA COUNTY SOUTH COAST-VENTURA COUNTY COAST-
LOS ANGELES COUNTY COAST INCLUDING DOWNTOWN LOS ANGELES-
VENTURA COUNTY INTERIOR VALLEYS-VENTURA COUNTY COASTAL VALLEYS-
SANTA MONICA MOUNTAINS RECREATIONAL AREA-
SAN LUIS OBISPO COUNTY MOUNTAINS-
SANTA BARBARA COUNTY MOUNTAINS-VENTURA COUNTY MOUNTAINS-
LOS ANGELES COUNTY MOUNTAINS EXCLUDING THE SANTA MONICA RANGE-
ANTELOPE VALLEY-CATALINA ISLAND-SANTA CLARITA VALLEY-
LOS ANGELES COUNTY SAN FERNANDO VALLEY-
LOS ANGELES COUNTY SAN GABRIEL VALLEY-
600 AM PST FRI FEB 6 2015

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHWESTERN CALIFORNIA.

.DAY ONE... TODAY AND TONIGHT

LOCAL DENSE FOG WILL REDUCE VISIBILITIES TO ONE QUARTER MILE OR LESS
ACROSS COASTAL SECTIONS OF LOS ANGELES COUNTY EARLY THIS MORNING.

RAIN WILL DEVELOP ACROSS SAN LUIS OBISPO COUNTY THIS AFTERNOON OR
EVENING...THEN OVERSPREAD SANTA BARBARA COUNTY TONIGHT. RAIN MAY BE
LOCALLY HEAVY TONIGHT AND THERE MAY BE PONDING OF WATER AND LOCAL
FLOODING ON AREA ROADWAYS...PARTICULARLY ACROSS SAN LUIS OBISPO
COUNTY.

THERE WILL BE A HIGH RISK OF RIP CURRENTS ON AREA BEACHES TODAY AND
TONIGHT.

SURF WILL BEGIN TO BUILD ON WEST FACING BEACHES TONIGHT.

* HIGH RIP CURRENT RISK......SEE FZUS56 KLOX - SRFLOX FOR DETAILS *

* BEACH HAZARDS STATEMENT...SEE WHUS46 KLOX - CFWLOX FOR DETAILS *

* SPECIAL WEATHER STATEMENT..SEE WWUS86 KLOX - SPSLOX FOR DETAILS *

.DAYS TWO THROUGH SEVEN... SATURDAY THROUGH THURSDAY

PERIOD OF RAIN ARE EXPECTED SATURDAY THROUGH EARLY
MONDAY...ESPECIALLY ACROSS SANTA BARBARA AND SAN LUIS OBISPO
COUNTIES. RAIN COULD BE HEAVY AT TIMES....ESPECIALLY ACROSS SAN LUIS
OBISPO COUNTY SATURDAY MORNING...AND AGAIN LATE SUNDAY.

HIGH SURF IS POSSIBLE ON WEST FACING BEACHES SATURDAY THROUGH SUNDAY.

THERE WILL BE A HIGH RISK OF RIP CURRENTS ON AREA BEACHES SATURDAY
THROUGH MONDAY.

GUSTY SANTA ANA WINDS MAY AFFECT LOS ANGELES AND VENTURA COUNTIES
WEDNESDAY THROUGH THURSDAY.

* HIGH RIP CURRENT RISK......SEE FZUS56 KLOX - SRFLOX FOR DETAILS *

* BEACH HAZARDS STATEMENT...SEE WHUS46 KLOX - CFWLOX FOR DETAILS *

* SPECIAL WEATHER STATEMENT..SEE WWUS86 KLOX - SPSLOX FOR DETAILS *

.SPOTTER INFORMATION STATEMENT...

WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER
CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.

In the hours before

Special weather statement, Feb 6, 1:56 PM PST, 5 hours 34 minutes before
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The office that day

Everything else NWS Los Angeles, CA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Feb 7, 3:05 AM PSTSmall Craft Advisory for Hazardous SeasLOX3 days

Nearby

High Surf Advisories in California, 2015Every high surf advisory in 2015

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.