Alert archive / California / Winter Storm Warnings in 2012

Winter Storm Warning 4, NWS Los Angeles, CA

April 12, 2012

NWS Los Angeles, CA issued this winter storm warning at Apr 12, 2012, 4:43 AM PDT. It took effect at Apr 13, 2012, 12:00 AM PDT. It was in force for 27 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
Apr 12, 2012, 4:43 AM PDT (11:43 UTC)
In effect from
Apr 13, 2012, 12:00 AM PDT
Expired
Apr 14, 2012, 3:00 AM PDT
In force
27 hr
Issued by
NWS Los Angeles, CA

The text

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

279 
WWUS46 KLOX 121143
WSWLOX

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE LOS ANGELES/OXNARD CA
443 AM PDT THU APR 12 2012

...A LATE SEASON STORM WILL BRING SNOW AND STRONG WINDS TO THE
MOUNTAINS TONIGHT THROUGH FRIDAY NIGHT...

...SNOW MAY CREATE TRAVEL DIFFICULTIES ACROSS THE INTERSTATE 5
CORRIDOR FOR FRIDAY EVENING COMMUTERS...

.A COLD PACIFIC STORM SYSTEM WILL APPROACH THE WEST COAST TODAY
AND TONIGHT...THEN PUSH ACROSS SOUTHERN CALIFORNIA FRIDAY AND
FRIDAY NIGHT. THIS SYSTEM WILL BRING SNOW AND STRONG WINDS TO THE
MOUNTAINS.

RAIN AND SNOW WILL DEVELOP ACROSS THE MOUNTAINS OF SANTA BARBARA
COUNTY THIS EVENING...WITH PRECIPITATION OVERSPREADING VENTURA AND
LOS ANGELES COUNTIES TONIGHT. RAIN AND SNOW WILL LIKELY BE HEAVY
AT TIMES...ESPECIALLY LATE TONIGHT AND FRIDAY. STEADY RAIN AND
SNOW WILL TURN TO SHOWERS FRIDAY NIGHT. THERE IS A SLIGHT CHANCE
OF THUNDERSTORMS FRIDAY AND EARLY FRIDAY NIGHT. SNOW LEVELS WILL
AVERAGE 4500 T0 5500 FEET TONIGHT AND EARLY FRIDAY...THEN LOWER TO
BETWEEN 3500 AND 4500 FEET BY FRIDAY NIGHT. ACCUMULATING SNOW WILL
LIKELY AFFECT INTERSTATE 5 OVER THE GRAPEVINE DURING THE BUSY
FRIDAY EVENING COMMUTE.

IN ADDITION TO THE SNOW...STRONG SOUTH TO SOUTHWEST WINDS OF 25 TO
35 MPH WITH GUSTS TO 55 MPH ARE EXPECTED TO DEVELOP LATE TONIGHT
AND FRIDAY...THEN WINDS WILL SHIFT TO NORTHWEST FRIDAY NIGHT. THE
GUSTY WINDS WILL CREATE BLOWING AND DRIFTING SNOW...WHICH WILL
REDUCE VISIBILITIES TO NEAR ZERO AT TIMES IN THE MOUNTAINS.
DRIVING CONDITIONS MAY BECOME TREACHEROUS IN THE MOUNTAINS...AND
IF YOU MUST TRAVEL INTO OR THROUGH THE MOUNTAINS TONIGHT THROUGH
FRIDAY NIGHT...CHECK THE LATEST ROAD REPORTS. 

CAZ053-054-122130-
/O.NEW.KLOX.WS.W.0004.120413T0700Z-120414T1000Z/
VENTURA COUNTY MOUNTAINS-
LOS ANGELES COUNTY MOUNTAINS EXCLUDING THE SANTA MONICA RANGE-
INCLUDING THE CITIES OF...LOCKWOOD VALLEY...MOUNT PINOS...ACTON...
MOUNT WILSON...SANDBERG
443 AM PDT THU APR 12 2012

...WINTER STORM WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 3 AM
PDT SATURDAY...

THE NATIONAL WEATHER SERVICE IN LOS ANGELES/OXNARD HAS ISSUED A
WINTER STORM WARNING FOR HEAVY SNOW AND STRONG WINDS...WHICH IS
IN EFFECT FROM MIDNIGHT TONIGHT TO 3 AM PDT SATURDAY.

* TIMING...PRECIPITATION WILL OVERSPREAD THE MOUNTAINS
  TONIGHT...BECOME HEAVY AT TIMES LATE TONIGHT AND FRIDAY...THEN
  TURN TO SHOWERS FRIDAY NIGHT. 

* SNOW LEVELS...SNOW LEVELS WILL AVERAGE 4500 TO 5500 FEET TONIGHT
  AND FRIDAY MORNING...THEN FALL TO BETWEEN 3500 AND 4500 FEET
  LATE FRIDAY AND FRIDAY NIGHT.

* SNOW ACCUMULATIONS...SNOWFALL ACCUMULATIONS OF 8 TO 14 INCHES
  ARE EXPECTED ABOVE 5500 FEET...WITH LIGHTER ACCUMULATIONS AT
  LOWER ELEVATIONS. 

* WINDS...SOUTH TO SOUTHWEST WINDS WILL INCREASE TO 25 TO 35 MPH
  WITH GUSTS TO 55 MPH LATE TONIGHT...THEN CONTINUE ON
  FRIDAY...BEFORE SHIFTING TO NORTHWEST LATE FRIDAY.

* IMPACTS...HAZARDOUS DRIVING CONDITIONS ARE EXPECTED IN THE
  MOUNTAINS LATE TONIGHT THROUGH FRIDAY NIGHT. SNOW WILL LIKELY
  IMPACT TRAVEL THROUGH THE INTERSTATE 5 CORRIDOR BY FRIDAY
  EVENING. VISIBILITIES WILL LOCALLY DROP TO NEAR ZERO AT TIMES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WARNING FOR HEAVY SNOW MEANS SEVERE WINTER WEATHER
CONDITIONS ARE EXPECTED OR OCCURRING. VISIBILITIES WILL BE LIMITED
DUE TO A COMBINATION OF FALLING AND BLOWING SNOW .SIGNIFICANT
AMOUNTS OF SNOW WILL MAKE TRAVEL DANGEROUS. IF YOU MUST
TRAVEL...CHECK THE LATEST ROAD REPORTS...AND KEEP AN EXTRA
FLASHLIGHT...FOOD...AND WATER IN YOUR VEHICLE IN CASE OF AN
EMERGENCY.

&&

$$

CAZ052-122130-
/O.NEW.KLOX.WW.Y.0008.120413T0400Z-120414T0400Z/
SANTA BARBARA COUNTY MOUNTAINS-
INCLUDING THE CITIES OF...SAN MARCOS PASS...
SAN RAFAEL WILDERNESS AREA...DICK SMITH WILDERNESS AREA
443 AM PDT THU APR 12 2012

...WINTER WEATHER ADVISORY IN EFFECT FROM 9 PM THIS EVENING TO
9 PM PDT FRIDAY...

THE NATIONAL WEATHER SERVICE IN LOS ANGELES/OXNARD HAS ISSUED A
WINTER WEATHER ADVISORY FOR SNOW AND BLOWING SNOW...WHICH IS IN
EFFECT FROM 9 PM THIS EVENING TO 9 PM PDT FRIDAY.

* TIMING...PRECIPITATION WILL OVERSPREAD THE MOUNTAINS THIS
  EVENING...BECOME HEAVY AT TIMES LATE TONIGHT AND FRIDAY...THEN
  TURN TO SHOWERS FRIDAY EVENING.

* SNOW LEVELS...SNOW LEVELS WILL AVERAGE 4500 TO 5500 FEET TONIGHT
  AND FRIDAY MORNING...THEN FALL TO BETWEEN 3500 AND 4500 FEET
  LATE FRIDAY.

* SNOW ACCUMULATIONS...SNOWFALL ACCUMULATIONS OF 4 TO 8 INCHES ARE
  EXPECTED ABOVE 5000 FEET...WITH LIGHTER ACCUMULATIONS AT LOWER
  ELEVATIONS.

* WINDS...SOUTH TO SOUTHWEST WINDS WILL INCREASE TO 25 TO 35 MPH
  WITH GUSTS TO 50 MPH TONIGHT...THEN CONTINUE ON FRIDAY...BEFORE
  SHIFTING TO NORTHWEST FRIDAY AFTERNOON.

* IMPACTS...HAZARDOUS DRIVING CONDITIONS ARE EXPECTED IN THE
  MOUNTAINS. VISIBILITIES WILL LOCALLY DROP TO NEAR ZERO IN SNOW
  AND BLOWING SNOW.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY FOR SNOW AND BLOWING SNOW MEANS THAT
PERIODS OF SNOW WILL CAUSE TRAVEL DIFFICULTIES. VISIBILITIES WILL
BE LIMITED DUE TO A COMBINATION OF FALLING AND BLOWING SNOW. BE
PREPARED FOR SNOW COVERED ROADS AND USE CAUTION WHILE DRIVING.

&&

$$

DB/CAK
6 follow-up statements
864 
WWUS46 KLOX 122107
WSWLOX

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE LOS ANGELES/OXNARD CA
207 PM PDT THU APR 12 2012

...A LATE SEASON STORM WILL BRING SNOW AND STRONG WINDS TO THE
MOUNTAINS TONIGHT THROUGH FRIDAY NIGHT...

...SNOW MAY CREATE TRAVEL HAZARDS ACROSS THE INTERSTATE 5 CORRIDOR
FOR FRIDAY EVENING COMMUTERS...

.A COLD PACIFIC STORM SYSTEM APPROACHING THE WEST COAST WILL
BRING SNOW AND STRONG WINDS TO THE MOUNTAINS TONIGHT THROUGH
FRIDAY NIGHT. RAIN AND SNOW WILL DEVELOP ACROSS THE MOUNTAINS OF
SANTA BARBARA COUNTY THIS EVENING...WITH PRECIPITATION SPREADING
OVER VENTURA AND LOS ANGELES COUNTIES TONIGHT. RAIN AND SNOW
WILL LIKELY BE HEAVY AT TIMES...ESPECIALLY LATE TONIGHT AND
FRIDAY. STEADY RAIN AND SNOW WILL TURN TO SHOWERS FRIDAY NIGHT. A
SLIGHT CHANCE OF THUNDERSTORMS WILL AFFECT THE AREA FRIDAY AND
FRIDAY NIGHT.

SNOW LEVELS WILL FALL TO 5000 FEET BY EARLY FRIDAY...THEN LOWER
TO NEAR 3500 FEET BY FRIDAY NIGHT. ACCUMULATING SNOW AND
BLOWING SNOW WILL LIKELY AFFECT INTERSTATE 5 OVER THE GRAPEVINE
DURING THE BUSY FRIDAY EVENING COMMUTE.

IN ADDITION TO THE SNOW...STRONG SOUTH TO SOUTHWEST WINDS OF
25 TO 35 MPH WITH GUSTS TO 55 MPH ARE EXPECTED TO DEVELOP LATE
TONIGHT AND FRIDAY. THE WINDS WILL SHIFT TO NORTHWEST FRIDAY
NIGHT WITH GUSTS UP TO 45 MPH. THE GUSTY WINDS WILL CREATE BLOWING
AND DRIFTING SNOW... WHICH WILL REDUCE VISIBILITIES TO NEAR ZERO
AT TIMES IN THE MOUNTAINS. DRIVING CONDITIONS MAY BECOME
TREACHEROUS AND IF YOU MUST TRAVEL INTO OR THROUGH THE MOUNTAINS
TONIGHT THROUGH FRIDAY NIGHT...CHECK THE LATEST ROAD REPORTS.

CAZ053-054-131200-
/O.CON.KLOX.WS.W.0004.120413T0700Z-120414T1000Z/
VENTURA COUNTY MOUNTAINS-
LOS ANGELES COUNTY MOUNTAINS EXCLUDING THE SANTA MONICA RANGE-
INCLUDING THE CITIES OF...LOCKWOOD VALLEY...MOUNT PINOS...ACTON...
MOUNT WILSON...SANDBERG
207 PM PDT THU APR 12 2012

...WINTER STORM WARNING REMAINS IN EFFECT FROM MIDNIGHT TONIGHT
TO 3 AM PDT SATURDAY...

* TIMING...PRECIPITATION WILL OVERSPREAD THE MOUNTAINS
  TONIGHT...BECOMING HEAVY AT TIMES LATE TONIGHT AND FRIDAY. SNOW
  SHOWERS WILL CONTINUE FRIDAY NIGHT INTO EARLY SATURDAY.

* SNOW LEVELS...SNOW LEVELS WILL AVERAGE 4500 TO 5000 FEET TONIGHT
  AND FRIDAY MORNING...THEN FALL TO BETWEEN 3500 TO 4000 FEET
  LATE FRIDAY AND FRIDAY NIGHT.

* SNOW ACCUMULATIONS...SNOWFALL ACCUMULATIONS OF 8 TO 14 INCHES 
  ARE EXPECTED ABOVE 5500 FEET...WITH LIGHTER ACCUMULATIONS AT 
  LOWER ELEVATIONS. 

* WINDS...SOUTH TO SOUTHWEST WINDS WILL INCREASE TO 25 TO 35 MPH
  WITH GUSTS TO 55 MPH LATE TONIGHT...THEN CONTINUE ON
  FRIDAY...BEFORE SHIFTING TO THE NORTHWEST WITH GUSTS TO 45 MPH
  LATE FRIDAY.

* IMPACTS...HAZARDOUS DRIVING CONDITIONS ARE EXPECTED IN THE 
  MOUNTAINS LATE TONIGHT THROUGH FRIDAY NIGHT. SNOW WILL LIKELY 
  IMPACT TRAVEL THROUGH THE INTERSTATE 5 CORRIDOR BY FRIDAY 
  EVENING. VISIBILITIES WILL LOCALLY DROP TO NEAR ZERO AT TIMES. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WARNING FOR HEAVY SNOW MEANS SEVERE WINTER WEATHER
CONDITIONS ARE EXPECTED OR OCCURRING. VISIBILITIES WILL BE
LIMITED DUE TO A COMBINATION OF FALLING AND BLOWING SNOW
.SIGNIFICANT AMOUNTS OF SNOW WILL MAKE TRAVEL DANGEROUS. IF YOU
MUST TRAVEL...CHECK THE LATEST ROAD REPORTS...AND KEEP AN EXTRA
FLASHLIGHT...FOOD...AND WATER IN YOUR VEHICLE IN CASE OF AN
EMERGENCY.

&&

$$

CAZ052-131200-
/O.CON.KLOX.WW.Y.0008.120413T0400Z-120414T0400Z/
SANTA BARBARA COUNTY MOUNTAINS-
INCLUDING THE CITIES OF...SAN MARCOS PASS...
SAN RAFAEL WILDERNESS AREA...DICK SMITH WILDERNESS AREA
207 PM PDT THU APR 12 2012

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 9 PM THIS
EVENING TO 9 PM PDT FRIDAY...

* TIMING...PRECIPITATION WILL OVERSPREAD THE MOUNTAINS THIS
  EVENING...BECOMING HEAVY AT TIMES LATE TONIGHT AND
  FRIDAY. SNOW SHOWERS WILL CONTINUE THROUGH FRIDAY EVENING.

* SNOW LEVELS...SNOW LEVELS WILL AVERAGE 4500 TO 5000 FEET TONIGHT
  AND FRIDAY MORNING...THEN FALL TO BETWEEN 3500 TO 4000 FEET LATE
  FRIDAY.

* SNOW ACCUMULATIONS...SNOWFALL ACCUMULATIONS OF 4 TO 8 INCHES 
  ARE EXPECTED ABOVE 5000 FEET...WITH LIGHTER ACCUMULATIONS AT 
  LOWER ELEVATIONS. 

* WINDS...SOUTH TO SOUTHWEST WINDS WILL INCREASE TO 25 TO 35 MPH
  WITH GUSTS TO 50 MPH TONIGHT...THEN CONTINUE ON FRIDAY...BEFORE
  SHIFTING TO THE NORTHWEST WITH GUSTS TO 45 MPH FRIDAY EVENING.

* IMPACTS...HAZARDOUS DRIVING CONDITIONS ARE EXPECTED IN THE 
  MOUNTAINS. VISIBILITIES WILL LOCALLY DROP TO NEAR ZERO IN SNOW 
  AND BLOWING SNOW. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY FOR SNOW AND BLOWING SNOW MEANS THAT
PERIODS OF SNOW WILL CAUSE TRAVEL DIFFICULTIES. VISIBILITIES WILL
BE LIMITED DUE TO A COMBINATION OF FALLING AND BLOWING SNOW. BE
PREPARED FOR SNOW COVERED ROADS AND USE CAUTION WHILE DRIVING.

&&

$$
175 
WWUS46 KLOX 130715
WSWLOX

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE LOS ANGELES/OXNARD CA
1215 AM PDT FRI APR 13 2012

...A LATE SEASON STORM WILL BRING SNOW AND STRONG WINDS TO THE
MOUNTAINS THROUGH TONIGHT...

...SNOW MAY CREATE TRAVEL HAZARDS ACROSS THE INTERSTATE
5 CORRIDOR FOR COMMUTERS THIS EVENING...

.A COLD PACIFIC STORM SYSTEM WILL BRING SNOW AND STRONG WINDS TO
THE MOUNTAINS THROUGH TONIGHT. RAIN AND SNOW HAS ALREADY BEGUN ACROSS
THE MOUNTAINS OF SANTA BARBARA AND VENTURA COUNTIES EARLY THIS
MORNING...AND WILL SOON DEVELOP ACROSS THE LOS ANGELES COUNTY
MOUNTAINS. RAIN AND SNOW WILL LIKELY BE HEAVY AT
TIMES...ESPECIALLY LATE THIS MORNING THROUGH THE AFTERNOON HOURS.
STEADY RAIN AND SNOW WILL TURN TO SHOWERS TONIGHT. ISOLATED
THUNDERSTORMS WILL AFFECT THE AREA THROUGH TONIGHT.

SNOW LEVELS WILL FALL TO 5000 FEET EARLY THIS MORNING...THEN
LOWER TO NEAR 3500 FEET BY TONIGHT. ACCUMULATING SNOW AND BLOWING
SNOW WILL LIKELY AFFECT INTERSTATE 5 OVER THE GRAPEVINE DURING THE
BUSY EVENING COMMUTE.

IN ADDITION TO THE SNOW...STRONG SOUTH TO SOUTHWEST WINDS OF
25 TO 35 MPH WITH GUSTS TO 55 MPH ARE EXPECTED TO DEVELOP TODAY. THE
WINDS WILL SHIFT TO NORTHWEST TONIGHT WITH GUSTS UP TO 45
MPH. THE GUSTY WINDS WILL CREATE BLOWING AND DRIFTING SNOW...
WHICH WILL REDUCE VISIBILITIES TO NEAR ZERO AT TIMES IN THE
MOUNTAINS. DRIVING CONDITIONS MAY BECOME TREACHEROUS AND IF YOU
MUST TRAVEL INTO OR THROUGH THE MOUNTAINS THIS MORNING THROUGH
TONIGHT...CHECK THE LATEST ROAD REPORTS.

CAZ053-054-131600-
/O.CON.KLOX.WS.W.0004.000000T0000Z-120414T1000Z/
VENTURA COUNTY MOUNTAINS-
LOS ANGELES COUNTY MOUNTAINS EXCLUDING THE SANTA MONICA RANGE-
INCLUDING THE CITIES OF...LOCKWOOD VALLEY...MOUNT PINOS...ACTON...
MOUNT WILSON...SANDBERG
1215 AM PDT FRI APR 13 2012

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 3 AM PDT
SATURDAY...

* TIMING...PRECIPITATION WILL OVERSPREAD THE MOUNTAINS THIS
  MORNING...BECOMING HEAVY AT TIMES...THEN TURN TO SHOWERS THIS
  EVENING. SNOW SHOWERS WILL CONTINUE TONIGHT INTO EARLY
  SATURDAY.

* SNOW LEVELS...SNOW LEVELS WILL AVERAGE 4500 TO 5000 FEET THIS
  MORNING...THEN FALL TO BETWEEN 3500 AND 4000 FEET THIS EVENING
  THROUGH THE TONIGHT.

* SNOW ACCUMULATIONS...SNOWFALL ACCUMULATIONS OF 8 TO 14 INCHES 
  ARE EXPECTED ABOVE 5500 FEET...WITH LIGHTER ACCUMULATIONS AT 
  LOWER ELEVATIONS. 

* WINDS...SOUTH TO SOUTHWEST WINDS WILL INCREASE TO 25 TO 35 MPH
  WITH GUSTS TO 55 MPH THIS MORNING...THEN CONTINUE THROUGH THIS
  EVENING...BEFORE SHIFTING TO THE NORTHWEST TONIGHT.

* IMPACTS...HAZARDOUS DRIVING CONDITIONS ARE EXPECTED IN THE 
  MOUNTAINS THROUGH TONIGHT. SNOW WILL LIKELY 
  IMPACT TRAVEL THROUGH THE INTERSTATE 5 CORRIDOR BY THIS 
  EVENING. VISIBILITIES WILL LOCALLY DROP TO NEAR ZERO AT TIMES. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WARNING FOR HEAVY SNOW MEANS SEVERE WINTER WEATHER
CONDITIONS ARE EXPECTED OR OCCURRING. VISIBILITIES WILL BE
LIMITED DUE TO A COMBINATION OF FALLING AND BLOWING SNOW
.SIGNIFICANT AMOUNTS OF SNOW WILL MAKE TRAVEL DANGEROUS. IF YOU
MUST TRAVEL...CHECK THE LATEST ROAD REPORTS...AND KEEP AN EXTRA
FLASHLIGHT...FOOD...AND WATER IN YOUR VEHICLE IN CASE OF AN
EMERGENCY.

&&

$$

CAZ052-131600-
/O.CON.KLOX.WW.Y.0008.000000T0000Z-120414T0400Z/
SANTA BARBARA COUNTY MOUNTAINS-
INCLUDING THE CITIES OF...SAN MARCOS PASS...
SAN RAFAEL WILDERNESS AREA...DICK SMITH WILDERNESS AREA
1215 AM PDT FRI APR 13 2012

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 9 PM PDT
FRIDAY...

* TIMING...RAIN AND SNOW...HEAVY AT TIMES...WILL TURN TO SHOWERS
  THIS AFTERNOON. SNOW SHOWERS WILL CONTINUE THROUGH THIS EVENING.

* SNOW LEVELS...SNOW LEVELS WILL AVERAGE 4500 TO 5000 FEET THIS
  MORNING...THEN FALL TO BETWEEN 3500 AND 4000 FEET TONIGHT.

* SNOW ACCUMULATIONS...SNOWFALL ACCUMULATIONS OF 4 TO 8 INCHES 
  ARE EXPECTED ABOVE 5000 FEET...WITH LIGHTER ACCUMULATIONS AT 
  LOWER ELEVATIONS. 

* WINDS...SOUTH TO SOUTHWEST WINDS WILL INCREASE TO 25 TO 35 MPH
  WITH GUSTS TO 50 MPH TODAY...BEFORE SHIFTING TO THE NORTHWEST
  WITH GUSTS TO 45 MPH THIS EVENING.

* IMPACTS...HAZARDOUS DRIVING CONDITIONS ARE EXPECTED IN THE 
  MOUNTAINS. VISIBILITIES WILL LOCALLY DROP TO NEAR ZERO IN SNOW 
  AND BLOWING SNOW. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY FOR SNOW AND BLOWING SNOW MEANS THAT
PERIODS OF SNOW WILL CAUSE TRAVEL DIFFICULTIES. VISIBILITIES WILL
BE LIMITED DUE TO A COMBINATION OF FALLING AND BLOWING SNOW. BE
PREPARED FOR SNOW COVERED ROADS AND USE CAUTION WHILE DRIVING.

&&

$$

KAPLAN/DB
036 
WWUS46 KLOX 131555
WSWLOX

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE LOS ANGELES/OXNARD CA
855 AM PDT FRI APR 13 2012

...A LATE SEASON STORM WILL BRING SNOW AND STRONG WINDS TO THE
MOUNTAINS THROUGH TONIGHT...

...SNOW MAY CREATE TRAVEL HAZARDS ACROSS THE INTERSTATE
5 CORRIDOR FOR COMMUTERS THIS EVENING...

.A COLD PACIFIC STORM SYSTEM WILL BRING SNOW AND STRONG WINDS TO
THE MOUNTAINS THROUGH TONIGHT. RAIN AND SNOW WILL LIKELY BE HEAVY
AT TIMES...ESPECIALLY LATE THIS MORNING THROUGH THE AFTERNOON
HOURS. STEADY RAIN AND SNOW WILL TURN TO SHOWERS TONIGHT. ISOLATED
THUNDERSTORMS WILL AFFECT THE AREA THROUGH TONIGHT.

SNOW LEVELS WILL FALL TO 5000 FEET EARLY THIS MORNING...THEN
LOWER TO NEAR 3500 FEET BY TONIGHT. ACCUMULATING SNOW AND BLOWING
SNOW WILL LIKELY AFFECT INTERSTATE 5 OVER THE GRAPEVINE DURING
THE BUSY EVENING COMMUTE.

IN ADDITION TO THE SNOW...STRONG SOUTH TO SOUTHWEST WINDS OF
25 TO 35 MPH WITH GUSTS TO 55 MPH ARE EXPECTED TO DEVELOP TODAY.
THE WINDS WILL SHIFT TO NORTHWEST TONIGHT WITH GUSTS UP TO
45 MPH. THE GUSTY WINDS WILL CREATE BLOWING AND DRIFTING SNOW...
WHICH WILL REDUCE VISIBILITIES TO NEAR ZERO AT TIMES IN THE
MOUNTAINS. DRIVING CONDITIONS MAY BECOME TREACHEROUS AND IF YOU
MUST TRAVEL INTO OR THROUGH THE MOUNTAINS THIS MORNING THROUGH
TONIGHT...CHECK THE LATEST ROAD REPORTS.

CAZ053-054-140000-
/O.CON.KLOX.WS.W.0004.000000T0000Z-120414T1000Z/
VENTURA COUNTY MOUNTAINS-
LOS ANGELES COUNTY MOUNTAINS EXCLUDING THE SANTA MONICA RANGE-
INCLUDING THE CITIES OF...LOCKWOOD VALLEY...MOUNT PINOS...ACTON...
MOUNT WILSON...SANDBERG
855 AM PDT FRI APR 13 2012

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 3 AM PDT
SATURDAY...

* TIMING...PRECIPITATION HEAVY AT TIMES THIS MORNING...THEN TURN TO
  SHOWERS THIS EVENING. SNOW SHOWERS WILL CONTINUE TONIGHT INTO
  EARLY SATURDAY.

* SNOW LEVELS...SNOW LEVELS WILL AVERAGE 4500 TO 5000 FEET THIS 
  MORNING...THEN FALL TO BETWEEN 3500 AND 4000 FEET THIS EVENING 
  THROUGH THE TONIGHT. 

* SNOW ACCUMULATIONS...SNOWFALL ACCUMULATIONS OF 8 TO 14 INCHES 
  ARE EXPECTED ABOVE 5500 FEET...WITH LIGHTER ACCUMULATIONS AT 
  LOWER ELEVATIONS. 

* WINDS...SOUTH TO SOUTHWEST WINDS WILL INCREASE TO 25 TO 35 MPH 
  WITH GUSTS TO 55 MPH THIS MORNING...THEN CONTINUE THROUGH THIS 
  EVENING...BEFORE SHIFTING TO THE NORTHWEST TONIGHT. 

* IMPACTS...HAZARDOUS DRIVING CONDITIONS ARE EXPECTED IN THE 
  MOUNTAINS THROUGH TONIGHT. SNOW WILL LIKELY IMPACT TRAVEL 
  THROUGH THE INTERSTATE 5 CORRIDOR BY THIS EVENING. 
  VISIBILITIES WILL LOCALLY DROP TO NEAR ZERO AT TIMES. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WARNING FOR HEAVY SNOW MEANS SEVERE WINTER WEATHER
CONDITIONS ARE EXPECTED OR OCCURRING. VISIBILITIES WILL BE
LIMITED DUE TO A COMBINATION OF FALLING AND BLOWING SNOW


&&

$$

CAZ052-140000-
/O.CON.KLOX.WW.Y.0008.000000T0000Z-120414T0400Z/
SANTA BARBARA COUNTY MOUNTAINS-
INCLUDING THE CITIES OF...SAN MARCOS PASS...
SAN RAFAEL WILDERNESS AREA...DICK SMITH WILDERNESS AREA
855 AM PDT FRI APR 13 2012

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 9 PM PDT THIS
EVENING...

* TIMING...RAIN AND SNOW...HEAVY AT TIMES...WILL TURN TO SHOWERS 
  THIS AFTERNOON. SNOW SHOWERS WILL CONTINUE THROUGH THIS 
  EVENING. 

* SNOW LEVELS...SNOW LEVELS WILL AVERAGE 4500 TO 5000 FEET THIS 
  MORNING...THEN FALL TO BETWEEN 3500 AND 4000 FEET TONIGHT. 

* SNOW ACCUMULATIONS...SNOWFALL ACCUMULATIONS OF 4 TO 8 INCHES 
  ARE EXPECTED ABOVE 5000 FEET...WITH LIGHTER ACCUMULATIONS AT 
  LOWER ELEVATIONS. 

* WINDS...SOUTH TO SOUTHWEST WINDS WILL INCREASE TO 25 TO 35 MPH 
  WITH GUSTS TO 50 MPH TODAY...BEFORE SHIFTING TO THE NORTHWEST 
  WITH GUSTS TO 45 MPH THIS EVENING. 

* IMPACTS...HAZARDOUS DRIVING CONDITIONS ARE EXPECTED IN THE 
  MOUNTAINS. VISIBILITIES WILL LOCALLY DROP TO NEAR ZERO IN SNOW 
  AND BLOWING SNOW. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY FOR SNOW AND BLOWING SNOW MEANS THAT
PERIODS OF SNOW WILL CAUSE TRAVEL DIFFICULTIES. VISIBILITIES WILL
BE LIMITED DUE TO A COMBINATION OF FALLING AND BLOWING SNOW. BE
PREPARED FOR SNOW COVERED ROADS AND USE CAUTION WHILE DRIVING.

&&

$$
275 
WWUS46 KLOX 132359
WSWLOX

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE LOS ANGELES/OXNARD CA
459 PM PDT FRI APR 13 2012

...SCATTERED SNOW SHOWERS AND GUSTY WINDS WILL CONTINUE OVER THE
MOUNTAINS THROUGH TONIGHT...

...SNOW MAY CREATE TRAVEL HAZARDS ACROSS THE INTERSTATE 5
CORRIDOR FOR COMMUTERS THIS EVENING...

.A COLD PACIFIC STORM SYSTEM WILL CONTINUE TO BRING SCATTERED RAIN
AND SNOW SHOWERS ALONG WITH GUSTY WINDS TO THE MOUNTAINS THROUGH
TONIGHT. ISOLATED THUNDERSTORMS WILL ALSO AFFECT THE AREA THROUGH
TONIGHT.

SNOW LEVELS WILL LOWER TO NEAR 3500 FEET BY TONIGHT. ACCUMULATING
SNOW AND BLOWING SNOW WILL LIKELY AFFECT INTERSTATE 5 OVER THE
GRAPEVINE DURING THE BUSY EVENING COMMUTE.

IN ADDITION TO THE SNOW...SOUTH TO SOUTHWEST WINDS OF 25 TO 35
MPH ARE EXPECTED THROUGH EARLY EVENING...THEN SHIFT TO NORTHWEST
TONIGHT WITH GUSTS UP TO 45 MPH. THE GUSTY WINDS WILL CREATE
BLOWING AND DRIFTING SNOW... WHICH WILL REDUCE VISIBILITIES TO
NEAR ZERO AT TIMES IN THE MOUNTAINS. DRIVING CONDITIONS MAY BECOME
TREACHEROUS AND IF YOU MUST TRAVEL INTO OR THROUGH THE MOUNTAINS
THROUGH TONIGHT...CHECK THE LATEST ROAD REPORTS.

CAZ053-054-140800-
/O.CON.KLOX.WS.W.0004.000000T0000Z-120414T1000Z/
VENTURA COUNTY MOUNTAINS-
LOS ANGELES COUNTY MOUNTAINS EXCLUDING THE SANTA MONICA RANGE-
INCLUDING THE CITIES OF...LOCKWOOD VALLEY...MOUNT PINOS...ACTON...
MOUNT WILSON...SANDBERG
459 PM PDT FRI APR 13 2012

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 3 AM PDT
SATURDAY...

* TIMING...SCATTERED SHOWERS WILL CONTINUE TONIGHT INTO EARLY
  SATURDAY.

* SNOW LEVELS...SNOW LEVELS WILL FALL TO BETWEEN 3500 AND 4000
  FEET THIS EVENING THROUGH THE TONIGHT.

* SNOW ACCUMULATIONS...TOTAL STORM ACCUMULATIONS OF 8 TO 14
  INCHES ARE EXPECTED ABOVE 5500 FEET...WITH LIGHTER ACCUMULATIONS
  AT LOWER ELEVATIONS.

* WINDS...SOUTH TO SOUTHWEST WINDS 25 TO 35 MPH WILL CONTINUE
  THROUGH EARLY THIS EVENING...BEFORE SHIFTING TO THE NORTHWEST
  TONIGHT WITH GUSTS UP TO 45 MPH.

* IMPACTS...HAZARDOUS DRIVING CONDITIONS ARE EXPECTED IN THE 
  MOUNTAINS THROUGH TONIGHT. SNOW WILL LIKELY IMPACT TRAVEL 
  THROUGH THE INTERSTATE 5 CORRIDOR BY THIS EVENING. 
  VISIBILITIES WILL LOCALLY DROP TO NEAR ZERO AT TIMES. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WARNING FOR HEAVY SNOW MEANS SEVERE WINTER WEATHER
CONDITIONS ARE EXPECTED OR OCCURRING. VISIBILITIES WILL BE
LIMITED DUE TO A COMBINATION OF FALLING AND BLOWING SNOW

&&

$$

CAZ052-140400-
/O.CON.KLOX.WW.Y.0008.000000T0000Z-120414T0400Z/
SANTA BARBARA COUNTY MOUNTAINS-
INCLUDING THE CITIES OF...SAN MARCOS PASS...
SAN RAFAEL WILDERNESS AREA...DICK SMITH WILDERNESS AREA
459 PM PDT FRI APR 13 2012

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 9 PM PDT THIS
EVENING...

* TIMING...SCATTERED SHOWERS WILL CONTINUE THROUGH THIS EVENING.

* SNOW LEVELS...SNOW LEVELS WILL FALL TO BETWEEN 3500 AND 4000
  FEET BY EARLY TONIGHT.

* SNOW ACCUMULATIONS...TOTAL STORM ACCUMULATIONS OF 4 TO 8 INCHES
  ARE EXPECTED ABOVE 5000 FEET...WITH LIGHTER ACCUMULATIONS AT
  LOWER ELEVATIONS.

* WINDS...AREAS OF NORTHWEST WINDS 25 TO 35 MPH WITH LOCAL GUSTS
  TO 45 MPH CAN BE EXPECTED THROUGH THIS EVENING.

* IMPACTS...HAZARDOUS DRIVING CONDITIONS ARE EXPECTED IN THE 
  MOUNTAINS. VISIBILITIES WILL LOCALLY DROP TO NEAR ZERO IN SNOW 
  AND BLOWING SNOW. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY FOR SNOW AND BLOWING SNOW MEANS THAT
PERIODS OF SNOW WILL CAUSE TRAVEL DIFFICULTIES. VISIBILITIES WILL
BE LIMITED DUE TO A COMBINATION OF FALLING AND BLOWING SNOW. BE
PREPARED FOR SNOW COVERED ROADS AND USE CAUTION WHILE DRIVING.

&&

$$

SIRARD
374 
WWUS46 KLOX 140341
WSWLOX

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE LOS ANGELES/OXNARD CA
841 PM PDT FRI APR 13 2012

...SCATTERED SNOW SHOWERS AND GUSTY WINDS WILL CONTINUE OVER THE
MOUNTAINS THROUGH TONIGHT...

...SNOW MAY CREATE TRAVEL HAZARDS ACROSS THE INTERSTATE 5
CORRIDOR FOR COMMUTERS OVERNIGHT...

.A COLD PACIFIC STORM SYSTEM WILL CONTINUE TO BRING SCATTERED
RAIN AND SNOW SHOWERS ALONG WITH GUSTY WINDS TO THE MOUNTAINS
THROUGH TONIGHT. ISOLATED THUNDERSTORMS WILL ALSO AFFECT THE AREA
THROUGH THIS EVENING.

SNOW LEVELS WILL BE NEAR 3500 FEET TONIGHT. ACCUMULATING SNOW AND
BLOWING SNOW WILL LIKELY AFFECT INTERSTATE 5 OVER THE GRAPEVINE.

IN ADDITION TO THE SNOW...NORTHWEST WINDS OF 25 TO 35 MPH ARE
EXPECTED TONIGHT WITH GUSTS UP TO 45 MPH. THE GUSTY WINDS WILL
CREATE BLOWING AND DRIFTING SNOW... WHICH WILL REDUCE VISIBILITIES
TO NEAR ZERO AT TIMES IN THE MOUNTAINS. DRIVING CONDITIONS MAY
BECOME TREACHEROUS AND IF YOU MUST TRAVEL INTO OR THROUGH THE
MOUNTAINS THROUGH TONIGHT...CHECK THE LATEST ROAD REPORTS.

CAZ053-054-141000-
/O.CON.KLOX.WS.W.0004.000000T0000Z-120414T1000Z/
VENTURA COUNTY MOUNTAINS-
LOS ANGELES COUNTY MOUNTAINS EXCLUDING THE SANTA MONICA RANGE-
INCLUDING THE CITIES OF...LOCKWOOD VALLEY...MOUNT PINOS...ACTON...
MOUNT WILSON...SANDBERG
841 PM PDT FRI APR 13 2012

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 3 AM PDT
SATURDAY...

* TIMING...SCATTERED SHOWERS WILL CONTINUE TONIGHT INTO EARLY 
  SATURDAY. 

* SNOW LEVELS...SNOW LEVELS WILL FALL BE BETWEEN 3500 AND 4000
  FEET THROUGH TONIGHT.

* SNOW ACCUMULATIONS...TOTAL STORM ACCUMULATIONS OF 8 TO 14 
  INCHES ARE EXPECTED ABOVE 5500 FEET...WITH LIGHTER 
  ACCUMULATIONS AT LOWER ELEVATIONS. 

* WINDS...NORTHWEST WINDS 25 TO 35 MPH WILL CONTINUE THROUGH
  TONIGHT WITH GUSTS UP TO 45 MPH.

* IMPACTS...HAZARDOUS DRIVING CONDITIONS ARE EXPECTED IN THE 
  MOUNTAINS THROUGH TONIGHT. SNOW WILL LIKELY IMPACT TRAVEL 
  THROUGH THE INTERSTATE 5 CORRIDOR BY THIS EVENING. 
  VISIBILITIES WILL LOCALLY DROP TO NEAR ZERO AT TIMES. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WARNING FOR HEAVY SNOW MEANS SEVERE WINTER WEATHER
CONDITIONS ARE EXPECTED OR OCCURRING. VISIBILITIES WILL BE
LIMITED DUE TO A COMBINATION OF FALLING AND BLOWING SNOW

&&

$$

CAZ052-141000-
/O.EXT.KLOX.WW.Y.0008.000000T0000Z-120414T1000Z/
SANTA BARBARA COUNTY MOUNTAINS-
INCLUDING THE CITIES OF...SAN MARCOS PASS...
SAN RAFAEL WILDERNESS AREA...DICK SMITH WILDERNESS AREA
841 PM PDT FRI APR 13 2012

...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL 3 AM PDT
SATURDAY...

* TIMING...SCATTERED SHOWERS WILL CONTINUE THROUGH TONIGHT.

* SNOW LEVELS...SNOW LEVELS WILL BE BETWEEN 3500 AND 4000 FEET
  THROUGH TONIGHT.

* SNOW ACCUMULATIONS...TOTAL STORM ACCUMULATIONS OF 4 TO 8 
  INCHES ARE EXPECTED ABOVE 5000 FEET...WITH LIGHTER 
  ACCUMULATIONS AT LOWER ELEVATIONS. 

* WINDS...AREAS OF NORTHWEST WINDS 25 TO 35 MPH WITH LOCAL GUSTS
  TO 45 MPH CAN BE EXPECTED.

* IMPACTS...HAZARDOUS DRIVING CONDITIONS ARE EXPECTED IN THE 
  MOUNTAINS. VISIBILITIES WILL LOCALLY DROP TO NEAR ZERO IN SNOW 
  AND BLOWING SNOW. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY FOR SNOW AND BLOWING SNOW MEANS THAT
PERIODS OF SNOW WILL CAUSE TRAVEL DIFFICULTIES. VISIBILITIES WILL
BE LIMITED DUE TO A COMBINATION OF FALLING AND BLOWING SNOW. BE
PREPARED FOR SNOW COVERED ROADS AND USE CAUTION WHILE DRIVING.

&&

$$

SIRARD
319 
WWUS46 KLOX 141023
WSWLOX

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE LOS ANGELES/OXNARD CA
323 AM PDT SAT APR 14 2012

...SCATTERED SNOW SHOWERS AND GUSTY WINDS WILL CONTINUE OVER THE 
MOUNTAINS THROUGH MID MORNING...

...SNOW WILL CONTINUE TO CREATE TRAVEL HAZARDS ACROSS THE
INTERSTATE 5 CORRIDOR THIS MORNING...

.A COLD PACIFIC STORM SYSTEM PASSED THROUGH THE REGION ON FRIDAY.
BEHIND THE FRONT...SCATTERED SNOW SHOWERS WILL CONTINUE ACROSS THE
NORTHERN SLOPES OF THE LOS ANGELES AND VENTURA COUNTY MOUNTAINS
THROUGH MID MORNING. THE COMBINATION OF SNOW SHOWERS AND GUSTY
WINDS WILL MAKE FOR HAZARDOUS DRIVING CONDITIONS...ESPECIALLY
ACROSS THE INTERSTATE 5 CORRIDOR.

SNOW LEVELS WILL BE NEAR 3500 FEET THROUGH THIS MORNING WHICH
SHOULD CONTINUE TO AFFECT THE GRAPEVINE ON THE TEJON PASS.

IN ADDITION TO THE SNOW...NORTHWEST WINDS OF 25 TO 35 MPH WITH
GUSTS UP TO 45 MPH ARE EXPECTED TODAY. THE GUSTY WINDS WILL CREATE
BLOWING AND DRIFTING SNOW...WHICH WILL REDUCE VISIBILITIES TO
NEAR ZERO AT TIMES IN THE MOUNTAINS. DRIVING CONDITIONS WILL
REMAIN TREACHEROUS...AND IF YOU MUST TRAVEL INTO OR THROUGH THE
MOUNTAINS THIS MORNING...CHECK THE LATEST ROAD REPORTS.

CAZ053-054-141600-
/O.EXP.KLOX.WS.W.0004.000000T0000Z-120414T1000Z/
/O.NEW.KLOX.WS.W.0005.120414T1023Z-120414T1600Z/
VENTURA COUNTY MOUNTAINS-
LOS ANGELES COUNTY MOUNTAINS EXCLUDING THE SANTA MONICA RANGE-
INCLUDING THE CITIES OF...LOCKWOOD VALLEY...MOUNT PINOS...ACTON...
MOUNT WILSON...SANDBERG
323 AM PDT SAT APR 14 2012

...WINTER STORM WARNING HAS BEEN EXTENDED UNTIL 9 AM PDT THIS
MORNING...

* TIMING...SCATTERED SHOWERS WILL CONTINUE THROUGH THIS MORNING.

* SNOW LEVELS...SNOW LEVELS WILL BE BETWEEN 3500 AND 4000 FEET
  THROUGH MID MORNING.

* SNOW ACCUMULATIONS...ADDITIONAL SNOW ACCUMULATIONS OF 1 TO 2
  INCHES ARE EXPECTED ON THE NORTHERN SLOPES THIS MORNING.

* WINDS...NORTHWEST WINDS 25 TO 35 MPH WITH GUSTS UP TO 45 MPH
  WILL CONTINUE THROUGH MID MORNING.

* IMPACTS...HAZARDOUS DRIVING CONDITIONS ARE EXPECTED IN THE
  MOUNTAINS THIS MORNING. SNOW AND ICY ROADS WILL CONTINUE TO
  IMPACT TRAVEL THROUGH THE INTERSTATE 5 CORRIDOR. VISIBILITIES
  WILL LOCALLY DROP TO NEAR ZERO AT TIMES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WARNING FOR HEAVY SNOW AND GUSTY WINDS MEANS SEVERE
WINTER WEATHER CONDITIONS ARE EXPECTED OR OCCURRING. VISIBILITIES
WILL BE LIMITED DUE TO A COMBINATION OF FALLING AND BLOWING SNOW.

&&

$$

CAZ052-141130-
/O.EXP.KLOX.WW.Y.0008.000000T0000Z-120414T1000Z/
SANTA BARBARA COUNTY MOUNTAINS-
INCLUDING THE CITIES OF...SAN MARCOS PASS...
SAN RAFAEL WILDERNESS AREA...DICK SMITH WILDERNESS AREA
323 AM PDT SAT APR 14 2012

...WINTER WEATHER ADVISORY HAS EXPIRED...

MOST OF THE SNOW ACCUMULATION THIS MORNING WILL BE ACROSS THE
NORTHERN SLOPES OF THE VENTURA AND LOS ANGELES COUNTY MOUNTAINS...
WITH LITTLE ADDITIONAL ACCUMULATION EXPECTED OVER THE SANTA BARBARA
COUNTY MOUNTAINS...THEREFORE THE WINTER WEATHER ADVISORY HAS BEEN
ALLOWED TO EXPIRE.

$$

KAPLAN

What forecasters said that day

The local office's own words before this winter storm 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 winter storm warning went out at Apr 12, 3:20 AM PDT, 1 hour 23 minutes earlier.

Area forecast discussion, Apr 12, 3:20 AM PDT, 1 hour 23 minutes before
SOUTHWEST CALIFORNIA AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LOS ANGELES/OXNARD CA
320 AM PDT THU APR 12 2012

.SYNOPSIS...

A COLD FRONT WILL MOVE ACROSS THE CENTRAL COAST THIS MORNING...THEN
SPREAD ACROSS THE ENTIRE FORECAST AREA TONIGHT AND CONTINUE THROUGH
FRIDAY. RAIN WILL TURN TO SHOWERS BY FRIDAY NIGHT INTO SATURDAY
MORNING. HIGH PRESSURE WILL BUILD IN EARLY NEXT WEEK AND A WARMING
TREND CAN BE EXPECTED THROUGH MUCH OF THE WEEK.

&&

.SHORT TERM (TODAY-SAT)...LOW LEVEL MOISTURE STILL LINGERING ACROSS
MUCH OF THE FORECAST AREA THIS MORNING. A FEW ISOLATED SHOWERS
DEVELOPED LATE LAST EVENING ACROSS THE LOS ANGELES BASIN AND MOVED
INTO THE SAN GABRIEL VALLEY BEFORE EXITING EAST INTO ORANGE COUNTY.

FOR TODAY...ANOTHER UPPER LEVEL LOW SITUATED SEVERAL HUNDRED MILES
WEST OF THE OREGON/WASHINGTON BORDER WILL CONTINUE TO SLIDE SOUTH
TOWARDS NORTHERN CALIFORNIA BY FRIDAY MORNING. A DEEP TROUGH
ASSOCIATED WITH THE LOW WILL DEVELOP A FRONTAL BOUNDARY BRINGING
RAIN TO THE CENTRAL COAST LATER THIS MORNING. PRECIP CHANCES WILL
INCREASE FOR AREAS N OF POINT CONCEPTION THIS AFTERNOON...WITH THE
BULK OF RAIN AFFECTING SAN LUIS OBISPO COUNTY. BY THIS
EVENING...RAIN WILL BEGIN TO PUSH INTO THE SANTA BARBARA AND VENTURA
COUNTY AREAS...WITH LOS ANGELES COUNTY SEEING THE RAIN BEGIN LATE
THIS EVENING INTO THE OVERNIGHT HOURS. GUSTY SW WINDS WILL
INCREASE...ESPECIALLY ACROSS THE ANTELOPE VALLEY TODAY WHERE A WIND
ADVISORY WILL BE ISSUED VALID LATE THIS MORNING THROUGH THIS EVENING
WITH WIND GUSTS TO 50 MPH EXPECTED.

BY FRIDAY...THE UPPER LEVEL LOW NEAR SAN FRANCISCO WILL TAKE ON A
NEGATIVE TILT. GOOD DIFFLUENCE WILL SET UP OVER SOUTHERN AND CENTRAL
CALIFORNIA BY FRIDAY MORNING WHICH WILL HELP TO ENHANCE RAIN
INTENSITY AS THE  JET WILL BE IN A FAVORABLE POSITION TO BRING GOOD
DIVERGENCE ALOFT AS WELL. AS THE MAIN AXIS PUSHES ACROSS THE
REGION...SOME INSTABILITY IN THE ATMOSPHERE COULD KICK OFF A FEW
THUNDERSTORMS INITIALLY N OF POINT CONCEPTION AND ADJACENT COASTAL
WATERS IN THE MORNING...THEN EVERYWHERE BY FRIDAY AFTERNOON THROUGH
THE EVENING HOURS. ALTHOUGH THE CONVECTIVE PARAMETERS ARE NOT
IMPRESSIVE...500 MB TEMPS WILL LOWER TO BETWEEN -31 DEGREES CELSIUS
TO THE NORTH AND -26 OVER LA COUNTY.

A WINTER STORM WATCH IS ALSO IN AFFECT FROM MIDNIGHT TONIGHT THROUGH
EARLY SATURDAY MORNING FOR THE LOS ANGELES AND VENTURA COUNTY
MOUNTAINS ABOVE 5000 FT. SNOW AMOUNTS WILL RANGE BETWEEN 8 TO 14
INCHES ABOVE 5000 FT. SNOW LEVEL WILL BE AROUND 4500 TO 5500 FT THIS
THROUGH TONIGHT...THEN DROP TO 4000 TO 4500 FT ON FRIDAY. BEHIND THE
FRONT FRIDAY EVENING...TEMPS WILL DROP SIGNIFICANTLY ACROSS THE
MOUNTAINS WITH SNOW LEVELS LOWERING TO AROUND 3500 FT. ALTHOUGH MUCH
OF THE RAIN WILL HAVE PUSHED EAST...THERE WILL BE CLOUDS BANKING UP
ACROSS THE NORTHERN SLOPES OF THE VENTURA AND NORTHWESTERN PORTION
OF LA COUNTY MOUNTAINS. THE INTERSTATE 5 CORRIDOR ACROSS THE
GRAPEVINE AND TEJON SUMMIT COULD BE AFFECTED WITH HAZARDOUS DRIVING
CONDITIONS. PROJECTED RAINFALL TOTALS WITH THIS STORM ARE
GENERALLY EXPECTED TO RANGE BETWEEN 0.50 AND 1.00 INCHES FOR COASTAL
AND VALLEY AREAS  FOR THE MOUNTAINS...RAINFALL OF 1 TO 2 INCHES.
SOUTHWEST WINDS AHEAD OF THE FRONT WILL HELP TO ENHANCE RAINFALL
AMOUNTS ACROSS SW FACING SLOPES WHERE A FEW SITES ACROSS THE SANTA
YNEZ AND VENTURA COUNTY MOUNTAINS RECEIVE A BIT MORE THAN 2 INCHES
OF RAINFALL.

BY SATURDAY...MOST OF THE PRECIPITATION WILL HAVE MOVED EAST OF THE
AREA...EXCEPT THERE WILL CONTINUE TO BE A CHANCE OF SNOW SHOWERS
ACROSS THE I-5 CORRIDOR THROUGH THE EARLY MORNING HOURS.
OTHERWISE...EXPECT PARTLY CLOUDY SKIES...WITH MOSTLY CLOUDY SKIES
ACROSS THE MOUNTAINS.

AS FAR AS HIGH TEMPS OVER THE NEXT FEW DAYS...TEMPS SHOULD BE
SIMILAR TO YESTERDAY FOR THE MOST PART...WITH A COOLING TREND
THROUGH FRIDAY...AND SOME WARMING ON SATURDAY AS THE FRONT PUSHES TO
THE EAST.

.LONG TERM (SUN-WED)...
MODELS CONTINUE TO BE IN PRETTY GOOD AGREEMENT FOR THE EXTENDED
PERIOD. AN UPPER LEVEL RIDGE WILL BUILD OFF THE COAST SUN
WHILE THE UPPER TROF LINGERS OVER THE GREAT BASIN. THE UPPER RIDGE
WILL THEN BUILD INTO SRN CA FOR MON THEN PERSIST OVER THE AREA THRU
WED.  DRY WEATHER WITH A WARMING TREND CAN BE EXPECTED DURING THE
PERIOD. WEAK OFFSHORE FLOW ON SUN AND MON WITH  INCREASING
THICKNESSES WILL HELP TO BOOST DAYTIME TEMPS WELL INTO THE 70S BY
EARLY NEXT WEEK FOR THE VALLEYS AND SOME COASTAL AREAS. SKIES WILL
BE MOSTLY CLEAR OVERALL THRU WED.

&&

.AVIATION...12/1200Z

&&

.LOX WATCHES/WARNINGS/ADVISORIES...
WINTER STORM WATCH (SEE LAXWSWLOX).
MARINE WEATHER STATEMENT (SEE LAXMWSLOX).
SPECIAL WEATHER STATEMENT (SEE LAXSPSLOX).

&&

PUBLIC...KAPLAN
AVIATION...BRUNO

WWW.WEATHER.GOV/LOSANGELES
Hazardous weather outlook, Apr 11, 6:30 PM PDT, 10 hours 13 minutes before
HAZARDOUS WEATHER OUTLOOK...UPDATED
NATIONAL WEATHER SERVICE LOS ANGELES/OXNARD CA
630 PM PDT WED APR 11 2012

CAZ034>041-044>046-051>054-059-087-088-547-548-121300-
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-
630 PM PDT WED APR 11 2012

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHWESTERN CALIFORNIA.

.DAY ONE...TONIGHT

NO HAZARDOUS WEATHER IS EXPECTED TONIGHT.

.DAYS TWO THROUGH SEVEN... THURSDAY THROUGH TUESDAY

RAIN AND MOUNTAIN SNOW WILL CREATE HAZARDOUS DRIVING CONDITIONS LATE
THURSDAY INTO FRIDAY. GALE FORCE WINDS ARE POSSIBLE ACROSS THE OUTER
WATERS ON FRIDAY NIGHT INTO SATURDAY WHICH IF THEY DEVELOP WILL
CREATE A HAZARDOUS MARITIME ENVIRONMENT FOR SEAFARERS.

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

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

.SPOTTER INFORMATION STATEMENT...

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

GOMBERG

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 12, 3:29 AM PDTWind AdvisoryLOX72 hr
Apr 12, 4:43 AM PDTWinter Weather AdvisoryLOX46 hr
Apr 12, 12:43 PM PDTAreal Flood AdvisoryLOXSan Luis Obispo88 min
Apr 12, 2:32 PM PDTGale WatchLOX12 hr
Apr 12, 3:12 PM PDTWind AdvisoryLOXLos Angeles23 hr

Nearby

Winter Storm Warnings in California, 2012Every winter storm warning 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.