Alert archive / California / Beach Hazards Statements in 2015

Beach Hazards Statement 4, NWS Los Angeles, CA

February 6, 2015Los Angeles County, California

NWS Los Angeles, CA issued this beach hazards statement at Feb 6, 2015, 2:30 AM PST for Los Angeles County, California. It took effect at Feb 7, 2015, 4:00 AM PST. It was in force for .

The area

The counties it named.

The facts

Issued
Feb 6, 2015, 2:30 AM PST (10:30 UTC)
In effect from
Feb 7, 2015, 4:00 AM PST
Expired
Feb 6, 2015, 7:30 PM PST
In force
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 10:35 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, 10.5 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 2015-02-06Temperature 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°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, San Diego, CA at 00:00Z on 2015-02-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 13 square meters per square second.1939Sfc1 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
3174 m above ground
0-6 km bulk shear
9 kt
0-1 km storm-relative helicity
13 m²/s²
0-3 km storm-relative helicity
51 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

192 
WHUS46 KLOX 061030
CFWLOX

COASTAL HAZARD MESSAGE
NATIONAL WEATHER SERVICE LOS ANGELES/OXNARD CA
230 AM PST FRI FEB 6 2015

...HIGH SURF CONDITIONS POSSIBLE THIS WEEKEND...

.A RELATIVELY LONG PERIOD WESTERLY SWELL WILL MOVE INTO THE
COASTAL WATERS THIS WEEKEND. AS THE SWELL BUILDS ON SATURDAY AND
SUNDAY...HIGH SURF CONDITIONS WILL BE POSSIBLE ALONG LOCAL
BEACHES...ESPECIALLY WEST-FACING BEACHES.

CAZ034-035-062000-
/O.NEW.KLOX.BH.S.0004.150207T1200Z-150210T0000Z/
SAN LUIS OBISPO COUNTY CENTRAL COAST-
SANTA BARBARA COUNTY CENTRAL COAST-
230 AM PST FRI FEB 6 2015

...BEACH HAZARDS STATEMENT IN EFFECT FROM LATE TONIGHT THROUGH
MONDAY AFTERNOON...

THE NATIONAL WEATHER SERVICE IN LOS ANGELES/OXNARD HAS ISSUED A
BEACH HAZARDS STATEMENT FOR POSSIBLE HIGH SURF WHICH IS IN EFFECT
FROM LATE TONIGHT THROUGH MONDAY AFTERNOON.

* HAZARDS...SURF 10 FEET OR GREATER POSSIBLE SATURDAY THROUGH
  MONDAY...WITH HIGHEST SURF ON WEST-FACING BEACHES.

* TIMING...SURF WILL BEGIN TO BUILD LATE TONIGHT AND SATURDAY THEN
  PEAK LATE SUNDAY AND MONDAY.

* IMPACTS...THIS POTENTIAL LARGE SURF WILL LIKELY LEAD TO AN
  INCREASE IN DANGEROUS RIP CURRENTS AND SNEAKER WAVES. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A BEACH HAZARDS STATEMENT IS ISSUED WHEN THREATS TO BEACH AND
SURF ZONE SAFETY ARE EXPECTED OR OCCURRING. CAUTION SHOULD BE
USED WHEN IN OR NEAR THE WATER. STAY NEAR OCCUPIED LIFEGUARD
TOWERS AND NEVER SWIM ALONE. IF CAUGHT IN A RIP CURRENT...SWIM
PARALLEL TO THE SHORE.

&&

$$

CAZ039>041-087-062000-
/O.NEW.KLOX.BH.S.0004.150207T1200Z-150210T0000Z/
SANTA BARBARA COUNTY SOUTH COAST-VENTURA COUNTY COAST-
LOS ANGELES COUNTY COAST INCLUDING DOWNTOWN LOS ANGELES-
CATALINA AND SANTA BARBARA ISLANDS-
230 AM PST FRI FEB 6 2015

...BEACH HAZARDS STATEMENT IN EFFECT FROM LATE TONIGHT THROUGH
MONDAY AFTERNOON...

THE NATIONAL WEATHER SERVICE IN LOS ANGELES/OXNARD HAS ISSUED A
BEACH HAZARDS STATEMENT FOR POSSIBLE HIGH SURF WHICH IS IN EFFECT
FROM LATE TONIGHT THROUGH MONDAY AFTERNOON.

* HAZARDS...SURF 7 FEET OR GREATER POSSIBLE SATURDAY THROUGH
  MONDAY...WITH HIGHEST SURF ON WEST-FACING BEACHES.

* TIMING...SURF WILL BEGIN TO BUILD LATE TONIGHT AND SATURDAY THEN
  PEAK LATE SUNDAY AND MONDAY.

* IMPACTS...THIS POTENTIAL LARGE SURF WILL LIKELY LEAD TO AN
  INCREASE IN DANGEROUS RIP CURRENTS AND SNEAKER WAVES. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A BEACH HAZARDS STATEMENT IS ISSUED WHEN THREATS TO BEACH AND
SURF ZONE SAFETY ARE EXPECTED OR OCCURRING. CAUTION SHOULD BE
USED WHEN IN OR NEAR THE WATER. STAY NEAR OCCUPIED LIFEGUARD
TOWERS AND NEVER SWIM ALONE. IF CAUGHT IN A RIP CURRENT...SWIM
PARALLEL TO THE SHORE.

&&

$$

RAT
2 follow-up statements
377 
WHUS46 KLOX 062004
CFWLOX

COASTAL HAZARD MESSAGE
NATIONAL WEATHER SERVICE LOS ANGELES/OXNARD CA
1204 PM PST FRI FEB 6 2015

...HIGH SURF CONDITIONS POSSIBLE THIS WEEKEND...

.A RELATIVELY LONG PERIOD WESTERLY SWELL WILL MOVE INTO THE
COASTAL WATERS THIS WEEKEND. AS THE SWELL BUILDS ON SATURDAY
THROUGH SUNDAY...HIGH SURF CONDITIONS WILL BE POSSIBLE ALONG
LOCAL BEACHES...ESPECIALLY WEST-FACING BEACHES.

CAZ034-035-070415-
/O.CON.KLOX.BH.S.0004.150207T1200Z-150210T0000Z/
SAN LUIS OBISPO COUNTY CENTRAL COAST-
SANTA BARBARA COUNTY CENTRAL COAST-
1204 PM PST FRI FEB 6 2015

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT FROM LATE TONIGHT
THROUGH MONDAY AFTERNOON...

* HAZARDS...SURF 10 FEET OR GREATER POSSIBLE SATURDAY THROUGH 
  MONDAY...WITH HIGHEST SURF ON WEST-FACING BEACHES. 

* TIMING...SURF WILL BEGIN TO BUILD LATE TONIGHT AND SATURDAY 
  THEN PEAK LATE SUNDAY AND MONDAY. 

* IMPACTS...THIS POTENTIAL LARGE SURF WILL LIKELY LEAD TO AN 
  INCREASE IN DANGEROUS RIP CURRENTS AND SNEAKER WAVES. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A BEACH HAZARDS STATEMENT IS ISSUED WHEN THREATS TO BEACH AND
SURF ZONE SAFETY ARE EXPECTED OR OCCURRING. CAUTION SHOULD BE
USED WHEN IN OR NEAR THE WATER. STAY NEAR OCCUPIED LIFEGUARD
TOWERS AND NEVER SWIM ALONE. IF CAUGHT IN A RIP CURRENT...SWIM
PARALLEL TO THE SHORE.

&&

$$

CAZ039>041-087-070415-
/O.CON.KLOX.BH.S.0004.150207T1200Z-150210T0000Z/
SANTA BARBARA COUNTY SOUTH COAST-VENTURA COUNTY COAST-
LOS ANGELES COUNTY COAST INCLUDING DOWNTOWN LOS ANGELES-
CATALINA AND SANTA BARBARA ISLANDS-
1204 PM PST FRI FEB 6 2015

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT FROM LATE TONIGHT
THROUGH MONDAY AFTERNOON...

* HAZARDS...SURF 7 FEET OR GREATER POSSIBLE SATURDAY THROUGH 
  MONDAY...WITH HIGHEST SURF ON WEST-FACING BEACHES. 

* TIMING...SURF WILL BEGIN TO BUILD LATE TONIGHT AND SATURDAY 
  THEN PEAK LATE SUNDAY AND MONDAY. 

* IMPACTS...THIS POTENTIAL LARGE SURF WILL LIKELY LEAD TO AN 
  INCREASE IN DANGEROUS RIP CURRENTS AND SNEAKER WAVES. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A BEACH HAZARDS STATEMENT IS ISSUED WHEN THREATS TO BEACH AND
SURF ZONE SAFETY ARE EXPECTED OR OCCURRING. CAUTION SHOULD BE
USED WHEN IN OR NEAR THE WATER. STAY NEAR OCCUPIED LIFEGUARD
TOWERS AND NEVER SWIM ALONE. IF CAUGHT IN A RIP CURRENT...SWIM
PARALLEL TO THE SHORE.

&&

$$
892 
WHUS46 KLOX 070330
CFWLOX

COASTAL HAZARD MESSAGE
NATIONAL WEATHER SERVICE LOS ANGELES/OXNARD CA
730 PM PST FRI FEB 6 2015

...HIGH SURF FOR SOUTHWEST CALIFORNIA BEACHES SATURDAY THROUGH 
MONDAY ...

.A RELATIVELY LONG PERIOD WEST-SOUTHWEST SWELL MOVING INTO THE
COASTAL WATERS WILL BRING HIGH SURF TO MANY SOUTHWEST CALIFORNIA
BEACHES THIS WEEKEND INTO EARLY NEXT WEEK. AS THE SWELL BUILDS ON
SATURDAY...HIGH SURF CONDITIONS ARE EXPECTED ALONG WEST TO
SOUTHWEST FACING BEACHES. THE SURF WILL PEAK SUNDAY INTO MONDAY
AND MAY PERSIST INTO TUESDAY. FREQUENT STRONG RIP CURRENTS AND
LONG-SHORE CURRENTS WILL BE POSSIBLE AS THE SWELL BUILDS INTO THE
WATERS...ALONG WITH THE POSSIBILITY OF SNEAKER WAVES AND MINOR
BEACH EROSION. 

CAZ034-035-071700-
/O.CAN.KLOX.BH.S.0004.150207T1200Z-150210T0000Z/
/O.NEW.KLOX.SU.Y.0003.150207T1200Z-150210T0000Z/
SAN LUIS OBISPO COUNTY CENTRAL COAST-
SANTA BARBARA COUNTY CENTRAL COAST-
730 PM PST FRI FEB 6 2015

...HIGH SURF ADVISORY IN EFFECT FROM 4 AM SATURDAY TO 4 PM PST
MONDAY...
...BEACH HAZARDS STATEMENT IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN LOS ANGELES/OXNARD HAS ISSUED A
HIGH SURF ADVISORY...WHICH IS IN EFFECT FROM 4 AM SATURDAY TO
4 PM PST MONDAY. THE BEACH HAZARDS STATEMENT HAS BEEN CANCELLED. 

* SURF...BUILDING TO 10 TO 12 FEET WITH SETS TO 15 FEET SATURDAY
  THROUGH MONDAY...WITH THE HIGHEST SURF ON SOUTHWEST TO WEST-
  FACING BEACHES.

* TIMING...SURF WILL BEGIN TO BUILD LATE TONIGHT AND SATURDAY THEN
  PEAK SUNDAY INTO MONDAY.

* IMPACTS...THIS BUILDING SURF WILL LEAD TO AN INCREASE IN
  DANGEROUS RIP CURRENTS AND SNEAKER WAVES. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A HIGH SURF ADVISORY MEANS THAT HIGH SURF WILL AFFECT BEACHES IN
THE ADVISORY AREA...PRODUCING RIP CURRENTS AND LOCALIZED BEACH
EROSION.

REMEMBER...IF CAUGHT IN A RIP CURRENT...SWIM PARALLEL TO SHORE
UNTIL YOU ARE FREE OF THE POWERFUL CURRENT. ALWAYS SWIM NEAR A
LIFEGUARD.

&&

$$

CAZ040-041-087-071700-
/O.CAN.KLOX.BH.S.0004.150207T1200Z-150210T0000Z/
/O.NEW.KLOX.SU.Y.0003.150207T1200Z-150210T0000Z/
VENTURA COUNTY COAST-
LOS ANGELES COUNTY COAST INCLUDING DOWNTOWN LOS ANGELES-
CATALINA AND SANTA BARBARA ISLANDS-
730 PM PST FRI FEB 6 2015

...HIGH SURF ADVISORY IN EFFECT FROM 4 AM SATURDAY TO 4 PM PST
MONDAY...
...BEACH HAZARDS STATEMENT IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN LOS ANGELES/OXNARD HAS ISSUED A
HIGH SURF ADVISORY...WHICH IS IN EFFECT FROM 4 AM SATURDAY TO
4 PM PST MONDAY. THE BEACH HAZARDS STATEMENT HAS BEEN CANCELLED. 

* SURF AND TIMING...BUILDING TO 4 TO 7 FEET ON SATURDAY THEN
  PEAKING AT 5 TO 8 FEET SUNDAY INTO MONDAY WITH LOCAL SETS TO 9
  FEET IN FAVORED LOCATIONS SUCH AS NEAR VENTURA HARBOR...EL
  PORTO...AND THE WEST SIDE OF CATALINA ISLAND.

* IMPACTS...THIS LARGE SURF WILL LEAD TO AN INCREASE IN DANGEROUS
  RIP CURRENTS AND SNEAKER WAVES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A HIGH SURF ADVISORY MEANS THAT HIGH SURF WILL AFFECT BEACHES IN
THE ADVISORY AREA...PRODUCING RIP CURRENTS AND LOCALIZED BEACH
EROSION.

REMEMBER...IF CAUGHT IN A RIP CURRENT...SWIM PARALLEL TO SHORE
UNTIL YOU ARE FREE OF THE POWERFUL CURRENT. ALWAYS SWIM NEAR A
LIFEGUARD.

&&

$$

CAZ039-071700-
/O.CAN.KLOX.BH.S.0004.150207T1200Z-150210T0000Z/
/O.NEW.KLOX.SU.Y.0003.150207T2200Z-150210T0000Z/
SANTA BARBARA COUNTY SOUTH COAST-
730 PM PST FRI FEB 6 2015

...HIGH SURF ADVISORY IN EFFECT FROM 2 PM SATURDAY TO 4 PM PST
MONDAY...
...BEACH HAZARDS STATEMENT IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN LOS ANGELES/OXNARD HAS ISSUED A
HIGH SURF ADVISORY...WHICH IS IN EFFECT FROM 2 PM SATURDAY TO
4 PM PST MONDAY. THE BEACH HAZARDS STATEMENT HAS BEEN CANCELLED. 

* SURF AND TIMING...SURF 3 TO 5 FEET BY SATURDAY
  MORNING...BUILDING TO 4 TO 7 FEET SUNDAY AND MONDAY. HIGHEST
  SURF ON SOUTHWEST TO WEST FACING BEACHES.

* IMPACTS...THIS POTENTIAL LARGE SURF WILL LIKELY LEAD TO AN
  INCREASE IN DANGEROUS RIP CURRENTS AND SNEAKER WAVES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A HIGH SURF ADVISORY MEANS THAT HIGH SURF WILL AFFECT BEACHES IN
THE ADVISORY AREA...PRODUCING RIP CURRENTS AND LOCALIZED BEACH
EROSION.

REMEMBER...IF CAUGHT IN A RIP CURRENT...SWIM PARALLEL TO SHORE
UNTIL YOU ARE FREE OF THE POWERFUL CURRENT. ALWAYS SWIM NEAR A
LIFEGUARD.

&&

$$

What forecasters said that day

The local office's own words before this beach hazards statement 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 beach hazards statement went out at Feb 5, 9:05 PM PST, 5 hours 25 minutes earlier.

Area forecast discussion, Feb 5, 9:05 PM PST, 5 hours 25 minutes before
SOUTHWEST CALIFORNIA AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LOS ANGELES/OXNARD CA
905 PST THU FEB 5 2015

.SYNOPSIS...

A FRONTAL SYSTEM APPROACHING FROM THE WEST WILL BRING AN INCREASE IN
CLOUDS THROUGH FRIDAY AFTERNOON...FOLLOWED BY RAIN FRIDAY NIGHT
THROUGH SATURDAY. RAIN WILL BE MOST LIKELY FROM SANTA BARBARA COUNTY
NORTH. ANOTHER LOW PRESSURE SYSTEM WILL BRING A GOOD CHANCE OF RAIN
FOR NORTHERN AREAS SUNDAY THROUGH MONDAY MORNING. SANTA ANA
CONDITIONS MAY DEVELOP NEXT WEEK.

&&

.SHORT TERM (TONIGHT-SUN)...RATHER WARM AWAY FROM THE COAST TODAY
OVER VTU/L.A. COUNTIES. ONE RECORD HIGH WAS SET AT SANDBERG AT 73
DEGREES. THE HIGH OF 82 AT DOWNTOWN L.A. TODAY WAS NOT A RECORD BUT
WAS 14 DEGREES ABOVE NORMAL. AT WOODLAND HILLS (PIERCE COLLEGE) THE
HIGH OF 87 MADE IT THE OFFICIAL WARMEST TEMP ACROSS THE CONTIGUOUS
48 STATES TODAY.

BANDS OF HI CLOUDS OUT AHEAD OF AN APPROACHING PACIFIC FRONT WERE
MOVING OVER SWRN CA THIS EVENING. LOW CLOUDS WERE ALONG AND OFF THE
CENTRAL COAST...AND WERE ALONG AND OFF THE SAN AND ORANGE COUNTY
COASTAL AREAS. ALONG THE CENTRAL COAST...THE LOW CLOUDS ARE FORECAST
TO EXPAND AND MOVE INLAND OVERNIGHT...WITH PATCHY DENSE FOG
POSSIBLE. S OF POINT CONCEPTION...THE LOW CLOUDS SHOULD EXPAND UP
THE COAST OVERNIGHT...REACHING THE SBA S COAST BY MORNING. WITH A
MARINE INVERSION AROUND 600 FT DEEP THIS EVENING...PATCHY DENSE FOG
WILL ALSO BE POSSIBLE LATER TONIGHT ESPECIALLY ALONG THE L.A. COUNTY
COAST.

A LARGE UPPER LEVEL TROUGH OVER THE E PAC WILL MOVE E AND INTO CA
THRU FRI THAN INLAND FRI NIGHT. A BROAD SW FLOW ALOFT WILL PERSIST
SAT...WITH A WEAK FLAT UPPER RIDGE EXPECTED SAT NIGHT INTO EARLY
SUN...FOLLOWED BY ANOTHER UPPER LEVEL TROF APPROACHING THE AREA BY
LATE SUN. THIS PATTERN WILL BE ASSOCIATED WITH AN ATMOSPHERIC RIVER
EVENT ACROSS MOST OF THE STATE THAT WILL PERSIST THRU THE WEEKEND.
THE 00Z NAM FORECASTS TO MOISTURE PLUME WITH PWATS UP TO 1.5 INCHES
TO CONTINUE TO MOVE INTO NORTHERN CA THRU FRI...THEN SAG S INTO SWRN
CA FRI NIGHT AND SAT BEFORE MOVING BACK INTO CENTRAL AND NRN CA
LATER SAT NIGHT AND SUN.

TWO STORM SYSTEMS WILL AFFECT THE FORECAST AREA...MAINLY FOR SLO/SBA
COUNTIES...DURING THE PERIOD. THE FIRST SYSTEM WILL BRING RAIN TO
THE CENTRAL COAST FRI EVENING THEN SPREAD THE RAIN SOUTH INTO VTU
COUNTY LATER FRI NIGHT AND TO L.A. COUNTY ON SAT. A MOIST ONSHORE
FLOW WILL KEEP RAIN IN THE FORECAST FOR SLO/SBA COUNTIES SAT NIGHT
INTO SUN MORNING...THEN ANOTHER STORM SYSTEM WILL MOVE INTO THE
CENTRAL COAST ON SUN WITH RAIN BECOMING LIKELY FOR MANY PARTS OF
SLO/SBA COUNTIES SUN AND SUN NIGHT. GUSTY S WINDS WILL ALSO
ACCOMPANY THESE WEATHER SYSTEMS FROM FRI NIGHT INTO SAT AND AGAIN ON
SUN. WIND GUSTS FOR THE FIRST SYSTEM COULD BE UP TO 40 MPH OVER THE
HIGHER TERRAIN OF SLO/SBA COUNTIES AND IN THE SLO INTERIOR VLYS...
WITH GUSTS UP TO 35 MPH FOR THE CENTRAL COAST. FOR THE LATE WEEKEND
WEATHER SYSTEM...WIND GUSTS UP TO 25 TO 30 MPH CANNOT BE RULED OUT
MAINLY OVER PORTIONS OF SLO COUNTY SUN AFTERNOON. RAINFALL ACROSS
THE REGION THROUGH SUNDAY NIGHT WILL BE HIGHEST OVER SLO COUNTY...
WITH 1.50 TO  TO 3.50 INCHES EXPECTED. FOR THE REST OF THE AREA...
RAINFALL SHOULD RANGE FROM ABOUT 0.75 TO 1.75 INCHES IN SBA
COUNTY...TO LESS THAN 0.25 INCH FOR L.A. COUNTY. SNOW LEVELS WITH
THESE WEATHER SYSTEMS WILL BE VERY HIGH...ABOVE 9000 FEET. FOR
FURTHER DETAILS ON THESE STORM SYSTEMS...PLEASE SEE THE LATEST
SPECIAL WEATHER STATEMENT (LAXSPSLOX) THAT WAS ISSUED EARLIER TODAY.

ALTHO TEMPS ACROSS THE FORECAST AREA WILL TURN COOLER FRI...HIGHS
WILL STILL BE SEVERAL DEGREES ABOVE NORMAL. TEMPS WILL COOL BACK TO
NEAR NORMAL FOR THE MOST PART ON SAT BEFORE WARMING AGAIN TO A FEW
DEGREES ABOVE NORMAL ON SUN.

***FROM PREVIOUS DISCUSSION***

.LONG TERM (MON-THU)...MAYBE A FEW LINGERING SHOWERS EARLY MONDAY,
OTHERWISE DRYING OUT WITH PLENTY OF SUNSHINE EXPECTED. GUSTY WINDS
POSSIBLE IN THE ANTELOPE VALLEY IN THE AFTERNOON WITH A PRETTY
STRONG ONSHORE GRADIENT. TUE GRADIENTS START SHIFTING TO THE NORTH
AS A WEAK TROF MOVES THROUGH NRN CA AND INTO NEVADA. COULD BE SOME
GUSTY NW WINDS THROUGH THE SANTA YNEZ RANGE AND I5 CORRIDOR THROUGH
TUESDAY EVENING. AT THIS POINT THE GFS AND EC DIVERGE, WITH THE GFS
SHOWING THE TROF CUTTING BACK INTO SE CALIFORNIA WED MORNING WITH
STRONG UPPER LEVEL SUPPORT FOR GUSTY SANTA WINDS WHILE THE ECMWF IS
FURTHER EAST WITH THE TROF AND HAS MUCH LESS UPPER SUPPORT. AM
FAVORING THE WINDIER GFS SOLUTION AT THIS TIME. HIGH TEMPS WILL BE
TRICKY WITH ALL THE COLD AIR ADVECTION BUT SHOULD MOSTLY STAY IN THE
70S AT LOWER ELEVATIONS AT LEAST INITIALLY. WED LIKELY THE WINDIEST
DAY WITH STRONG ADVISORY LEVEL WINDS EXPECTED ACROSS LA/VENTURA
COUNTIES AND POSSIBLY LOW END WARNING LEVEL IN THE MTNS. STILL
PRETTY WINDY THU BUT PROBABLY A NOTCH DOWN FROM WED. SIMILAR TRENDS
FRI THROUGH SAT BUT POSSIBLY LOW END ADVISORY LEVEL WIND GUSTS
CONTINUING. TEMPS WARMING INTO THE 80S BY THE END OF THE WEEK.

&&

.AVIATION...06/0030Z.

AT 2310Z...THE INVERSION AT KLAX WAS BASED AT 600 FEET. THE TOP OF
THE INVERSION WAS AT 2000 FEET WITH A TEMPERATURE OF 21 DEGREES
CELSIUS.

MODERATE CONFIDENCE OVERALL IN THE 00Z TAFS. AT KPRB...A PERIOD OF
LIFR CONDITIONS ARE EXPECTED 14Z-18Z...BUT THERE IS A 50 PERCENT
CHANCE OF THESE CIGS NOT DEVELOPING. AT KSBP AND KSMX...LIFR/IFR
CIGS ARE FORECAST LATER TONIGHT INTO FRI MORNING BUT THE TIMING MAY
BE OFF PLUS/MINUS 1 TO 2 HOURS. FOR KSBA...KOXR...KLAX AND KLGB
LIFR/IFR/MVFR CIGS ARE EXPECTED LATER TONIGHT AND FRI MORNING... BUT
AGAIN TIMING MAY BE OFF PLUS/MINUS AN HOUR OR TWO. OTHERWISE...VFR
CONDITIONS ARE EXPECTED AT THESE AIRFIELDS THRU FRI. FOR KBUR...
VNY...KPMD AND KWJF...VFR CONDITIONS ARE EXPECTED THRU FRI...EXCEPT
FOR A PERIOD OF MVFR VSBYS AT KVNY 06Z-14Z. GUSTY S TO SE WINDS
SHOULD AFFECT KPRB AND KSMX FRI AFTERNOON.

KLAX...MODERATE CONFIDENCE IN THE 00Z TAF. IFR VSBYS SHOULD PREVAIL
THIS EVENING. A PERIOD OF LIFR CONDITIONS ARE EXPECTED 08Z-12Z
FOLLOWED BY IFR/MVFR CONDITIONS THRU 20Z. HOWEVER...THERE IS
UNCERTAINTY ON THE TIMING OF THE LOW CLOUDS AND CHANGES IN FLIGHT
CATS WHICH MAY BE OFF PLUS/MINUS AN HOUR OR TWO. LOW CLOUDS AND MVFR
CONDITIONS SHOULD MOVE BACK INTO THE AIRFIELD BY 00Z THEN LOWER TO
IFR BY 03Z...BUT THIS TIMING MAY ALSO BE OFF AN HOUR OR SO.

KBUR...GENERALLY HI CONFIDENCE IN THE 00Z TAF WITH VFR CONDITIONS
EXPECTED THRU FRI...ALTHO THERE IS A 30 PERCENT CHANCE OF A PERIOD
OF MVFR VSBYS LATER TONIGHT INTO EARLY FRI.

&&

.MARINE...05/900 PM.
SOUTHERLY WINDS EXPECTED TO INCREASE FROM THE NORTHWEST ACROSS THE
OUTER WATERS TONIGHT INTO FRIDAY...AND MODERATE TO HIGH CONFIDENCE
THAT MODERATE SOUTH TO SE WINDS WILL PERSIST THROUGH SUNDAY NIGHT AS
TWO FRONTAL SYSTEMS CROSS THE WATERS. THE STRONGER WINDS ARE
EXPECTED OVER THE TWO NORTHERN OUTER MARINE ZONES...WHERE SMALL
CRAFT ADVISORY SPEEDS ARE EXPECTED THROUGH SATURDAY.
OTHERWISE...MAINLY LIGHT TO LOCALLY MODERATE WINDS ARE EXPECTED
NEARSHORE...AND A BUILDING WESTERLY SWELL WILL MOVE INTO THE WATERS
TONIGHT. THERE WILL BE HAZARDOUS SEA CONDITIONS AS SOUTHERLY WIND
WAVES COMBINE WITH THE WESTERLY SWELL OF 7 TO 10 FEET AT 12
SECONDS...RESULTING IN LARGE CROSSING SEAS.

THERE WILL BE AREAS OF DENSE FOG WITH VISIBILITY ONE MILE OR LESS
ACROSS THE ENTIRE COASTAL WATERS OVERNIGHT INTO FRIDAY MORNING.

&&

.LOX WATCHES/WARNINGS/ADVISORIES...
SMALL CRAFT ADVISORY (SEE LAXMWWLOX).
HIGH RIP CURRENT RISK (SEE LAXSRFLOX).
SPECIAL WEATHER STATEMENT (SEE LAXSPSLOX).

&&

PUBLIC...SIRARD/MW
AVIATION...SIRARD
MARINE...SMITH
SYNOPSIS...SUKUP

WWW.WEATHER.GOV/LOSANGELES
Hazardous weather outlook, Feb 5, 6:00 AM PST, 20 hours 30 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE LOS ANGELES/OXNARD CA
600 AM PST THU FEB 5 2015

CAZ034>041-044>046-051>054-059-087-088-547-548-061400-
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 THU FEB 5 2015

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHWESTERN CALIFORNIA.

.DAY ONE... TODAY AND TONIGHT

DENSE FOG WILL CREATE DRIVING HAZARDS THIS MORNING. AN ELEVATED RIP
CURRENT RISK WILL BRING HAZARDOUS SWIMMING CONDITIONS TO AREA
BEACHES. MARINERS WILL FACE DENSE FOG THIS MORNING.

* DENSE FOG ADVISORY.........SEE WWUS76 KLOX - NPWLOX FOR DETAILS *

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

* MARINE WEATHER STATEMENT...SEE FZUS76 KLOX - MWSLOX FOR DETAILS *

.DAYS TWO THROUGH SEVEN... FRIDAY THROUGH WEDNESDAY

RAIN WILL AFFECT THE CENTRAL COAST AND POSSIBLY AREA SOUTH OF PT
CONCEPTION LATER FRIDAY AND SATURDAY.

.SPOTTER INFORMATION STATEMENT...

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

ASR

The office that day

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

IssuedProductOfficeCountiesLasted
Feb 6, 1:40 PM PSTWind AdvisoryLOX13 hr

Nearby

Beach Hazards Statements in California, 2015Every beach hazards statement 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.