Winter Storm Warning 1, NWS Los Angeles, CA

769 
WWUS46 KLOX 190138
WSWLOX

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE LOS ANGELES/OXNARD CA
538 PM PST WED JAN 18 2017

...SNOW AND GUSTY WINDS EXPECTED IN THE MOUNTAINS OF VENTURA AND
LOS ANGELES COUNTIES LATE THIS EVENING THROUGH SATURDAY MORNING...

.TWO STORMS WILL BRING PERIODS OF HEAVY SNOW TO THE HIGHER
ELEVATIONS OF THE MOUNTAINS BEGINNING LATE TONIGHT. SEVERAL
INCHES OF SNOW ARE POSSIBLE... MAINLY ABOVE 7000 FEET... TONIGHT
THROUGH MID DAY THURSDAY. LIGHTER AMOUNTS ARE POSSIBLE AS LOW AS
5000 FEET.

THE SECOND STORM WILL GENERATE ANOTHER ROUND OF HEAVY SNOW FRIDAY
WITH SEVERAL MORE INCHES POSSIBLE AT HIGHER ELEVATIONS AND LIGHT
ACCUMULATIONS DOWN TO 4000 FEET EARLY SATURDAY.

A THIRD AND STORM IS EXPECTED SUNDAY INTO MONDAY THAT SHOULD
BRING ADDITIONAL SNOW.

CAZ053-054-190945-
/O.EXT.KLOX.WS.W.0001.170119T0138Z-170121T1700Z/
VENTURA COUNTY MOUNTAINS-
LOS ANGELES COUNTY MOUNTAINS EXCLUDING THE SANTA MONICA RANGE-
INCLUDING THE CITIES OF...LOCKWOOD VALLEY...MOUNT PINOS...ACTON...
MOUNT WILSON...SANDBERG
538 PM PST WED JAN 18 2017

...WINTER STORM WARNING NOW IN EFFECT UNTIL 9 AM PST SATURDAY...

* TIMING...SNOW WILL BEGIN THIS EVENING...THEN CONTINUE THROUGH 
  MID-DAY THURSDAY. SCATTERED SNOW SHOWERS WILL LINGER THROUGH 
  THURSDAY EVENING. A SECOND STORM WILL BRING MORE HEAVY SNOW 
  FRIDAY INTO EARLY SATURDAY. 

* SNOW LEVELS...6500 TO 7000 FEET TONIGHT AND AGAIN FRIDAY... 
  LOWERING TO 5000 TO 5500 FEET EARLY THURSDAY AND DOWN TO 3500 
  TO 4000 FEET LATE FRIDAY NIGHT INTO SATURDAY MORNING. 

* SNOW ACCUMULATION...5 TO 10 INCHES ABOVE 6500 FEET WITH EACH 
  OF THE FIRST TWO STORMS THURSDAY AND FRIDAY. LIGHT 
  ACCUMULATIONS ARE POSSIBLE AS LOW AS 4000 FEET EARLY SATURDAY. 

* WINDS...SOUTH WINDS 25 TO 35 MPH WITH GUSTS TO 55 MPH THROUGH
  THURSDAY MORNING...THEN AGAIN ON FRIDAY.

* IMPACTS...PERIODS OF SNOW...GUSTY WINDS...AND LOW VISIBILITIES 
  MAKE FOR DANGEROUS DRIVING CONDITIONS AND COULD LEAD TO TRAVEL 
  PROBLEMS ON HIGHER MOUNTAIN ROADS. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

ONLY TRAVEL IN AN EMERGENCY. IF YOU MUST TRAVEL... CHECK THE
LATEST ROAD REPORTS BEFORE DEPARTING. KEEP AN EMERGENCY KIT IN
YOUR VEHICLE WHICH INCLUDES A FLASHLIGHT... FOOD AND WATER...
EXTRA CLOTHES AND BLANKETS... AND TIRE CHAINS.

&&

$$

HALL

231 
WWUS46 KLOX 190536
WSWLOX

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE LOS ANGELES/OXNARD CA
936 PM PST WED JAN 18 2017

...SNOW AND GUSTY WINDS EXPECTED IN THE MOUNTAINS OF VENTURA AND
LOS ANGELES COUNTIES LATE THIS EVENING THROUGH SATURDAY MORNING...

.TWO STORMS WILL BRING PERIODS OF HEAVY SNOW TO THE HIGHER
ELEVATIONS OF THE MOUNTAINS BEGINNING LATE TONIGHT. SEVERAL
INCHES OF SNOW ARE POSSIBLE...MAINLY ABOVE 7000 FEET...TONIGHT
THROUGH MID-DAY THURSDAY. LIGHTER AMOUNTS ARE POSSIBLE AS LOW AS
4500 FEET.

THE SECOND STORM WILL GENERATE ANOTHER ROUND OF HEAVY SNOW FRIDAY
WITH SEVERAL MORE INCHES POSSIBLE AT HIGHER ELEVATIONS AND LIGHT
ACCUMULATIONS DOWN TO 4000 FEET EARLY SATURDAY.

A THIRD AND STORM IS EXPECTED SUNDAY INTO MONDAY THAT SHOULD
BRING ADDITIONAL SNOW.

CAZ053-054-191300-
/O.CON.KLOX.WS.W.0001.000000T0000Z-170121T1700Z/
VENTURA COUNTY MOUNTAINS-
LOS ANGELES COUNTY MOUNTAINS EXCLUDING THE SANTA MONICA RANGE-
INCLUDING THE CITIES OF...LOCKWOOD VALLEY...MOUNT PINOS...ACTON...
MOUNT WILSON...SANDBERG
936 PM PST WED JAN 18 2017

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 9 AM PST
SATURDAY...

* TIMING...PERIODS OF SNOW WILL CONTINUE THROUGH MID-DAY
  THURSDAY...HEAVIEST AFTER MIDNIGHT. SCATTERED SNOW SHOWERS WILL
  LINGER THROUGH THURSDAY EVENING. A SECOND STORM WILL BRING MORE
  HEAVY SNOW FRIDAY INTO EARLY SATURDAY.

* SNOW LEVELS...SNOW LEVELS 6000 TO 6500 FEET THIS EVENING AND
  AGAIN FRIDAY...LOWERING TO 4500 TO 5000 FEET EARLY THURSDAY AND
  DOWN TO 3500 TO 4000 FEET LATE FRIDAY NIGHT INTO SATURDAY
  MORNING.

* SNOW ACCUMULATION...5 TO 10 INCHES ABOVE 6000 FEET WITH EACH OF
  THE FIRST TWO STORMS THURSDAY AND FRIDAY. LIGHT ACCUMULATIONS
  ARE POSSIBLE AS LOW AS 4000 FEET THURSDAY AND SATURDAY.

* WINDS...SOUTH WINDS 25 TO 35 MPH WITH GUSTS TO 55 MPH THROUGH 
  THURSDAY MORNING...THEN AGAIN ON FRIDAY. 

* IMPACTS...PERIODS OF SNOW...GUSTY WINDS...AND LOW VISIBILITIES 
  MAKE FOR DANGEROUS DRIVING CONDITIONS AND COULD LEAD TO TRAVEL 
  PROBLEMS ON HIGHER MOUNTAIN ROADS. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

ONLY TRAVEL IN AN EMERGENCY. IF YOU MUST TRAVEL... CHECK THE
LATEST ROAD REPORTS BEFORE DEPARTING. KEEP AN EMERGENCY KIT IN
YOUR VEHICLE WHICH INCLUDES A FLASHLIGHT... FOOD AND WATER...
EXTRA CLOTHES AND BLANKETS... AND TIRE CHAINS.

&&

$$

HALL

837 
WWUS46 KLOX 191257
WSWLOX

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE LOS ANGELES/OXNARD CA
457 AM PST THU JAN 19 2017

...SNOW AND GUSTY WINDS EXPECTED IN THE MOUNTAINS OF VENTURA 
   AND LOS ANGELES COUNTIES THROUGH SATURDAY MORNING...

.TWO STORMS WILL BRING PERIODS OF HEAVY SNOW TO THE HIGHER
ELEVATIONS OF THE MOUNTAINS THROUGH SATURDAY MORNING. SEVERAL
INCHES OF SNOW ARE POSSIBLE...MAINLY ABOVE 7000 FEET...THROUGH
NOON TODAY. LIGHTER AMOUNTS ARE POSSIBLE AS LOW AS 4500 FEET.

THE SECOND STORM WILL GENERATE A ROUND OF HEAVY SNOW FRIDAY WITH
SEVERAL MORE INCHES POSSIBLE AT HIGHER ELEVATIONS AND LIGHT
ACCUMULATIONS DOWN TO 4000 FEET EARLY SATURDAY.

A THIRD AND STORM IS EXPECTED SUNDAY INTO MONDAY THAT SHOULD
BRING ADDITIONAL SNOW.

CAZ053-054-192100-
/O.CON.KLOX.WS.W.0001.000000T0000Z-170121T1700Z/
VENTURA COUNTY MOUNTAINS-
LOS ANGELES COUNTY MOUNTAINS EXCLUDING THE SANTA MONICA RANGE-
INCLUDING THE CITIES OF...LOCKWOOD VALLEY...MOUNT PINOS...ACTON...
MOUNT WILSON...SANDBERG
457 AM PST THU JAN 19 2017

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 9 AM PST
SATURDAY...

* TIMING...PERIODS OF SNOW WILL CONTINUE THROUGH NOON TODAY.
  SCATTERED SNOW SHOWERS WILL LINGER THROUGH THIS EVENING. A
  SECOND STORM WILL BRING MORE HEAVY SNOW FRIDAY INTO EARLY
  SATURDAY.

* SNOW LEVELS...SNOW LEVELS WILL LOWER TO 4500 TO 5000 FEET TODAY
  AND DOWN RISE TO 5500 FEET LATE TONIGHT AND THEN FALL AGAIN TO
  3500 TO 4000 FEET LATE FRIDAY NIGHT INTO SATURDAY MORNING.

* SNOW ACCUMULATION...5 TO 10 INCHES ABOVE 6000 FEET WITH EACH OF
  THE FIRST TWO STORMS THURSDAY AND FRIDAY. LIGHT ACCUMULATIONS
  ARE POSSIBLE AS LOW AS 4000 FEET THIS MORNING AND SATURDAY.

* WINDS...SOUTH WINDS 25 TO 35 MPH WITH GUSTS TO 55 MPH THROUGH
  THIS MORNING...THEN AGAIN FRIDAY AFTERNOON AND EVENING.

* IMPACTS...PERIODS OF SNOW...GUSTY WINDS...AND LOW VISIBILITIES
  WILL MAKE FOR DANGEROUS DRIVING CONDITIONS AND COULD LEAD TO
  TRAVEL PROBLEMS ON HIGHER MOUNTAIN ROADS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

ONLY TRAVEL INTO THE MOUNTAINS IN AN EMERGENCY. IF YOU MUST
TRAVEL...CHECK THE LATEST ROAD REPORTS BEFORE DEPARTING. KEEP AN
EMERGENCY KIT IN YOUR VEHICLE WHICH INCLUDES A FLASHLIGHT... FOOD
AND WATER... EXTRA CLOTHES AND BLANKETS... AND TIRE CHAINS.

&&

$$

RORKE

877 
WWUS46 KLOX 192145
WSWLOX

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE LOS ANGELES/OXNARD CA
145 PM PST THU JAN 19 2017

...SNOW AND GUSTY WINDS EXPECTED IN THE MOUNTAINS OF VENTURA   
AND LOS ANGELES COUNTIES THROUGH SATURDAY MORNING...

.WHILE CURRENTLY IN BETWEEN STORMS...SCATTERED SNOW SHOWERS CAN
BE EXPECTED THROUGH THIS EVENING BEFORE THE SECOND STORM ARRIVES
EARLY FRIDAY. THIS WILL GENERATE ANOTHER ROUND OF HEAVY SNOW
FRIDAY WITH SEVERAL MORE INCHES POSSIBLE AT HIGHER ELEVATIONS AND
LIGHT ACCUMULATIONS DOWN TO 5000 FEET EARLY SATURDAY.

A THIRD STORM IS EXPECTED ON SUNDAY BUT SNOW LEVELS ARE EXPECTED
TO RISE TO OVER 9000' SO LITTLE TO NO SNOW ACCUMULATION IS
EXPECTED UNTIL SUNDAY NIGHT AND MONDAY WHEN COLDER AIR ARRIVES.

CAZ053-054-200800-
/O.CON.KLOX.WS.W.0001.000000T0000Z-170121T1700Z/
VENTURA COUNTY MOUNTAINS-
LOS ANGELES COUNTY MOUNTAINS EXCLUDING THE SANTA MONICA RANGE-
INCLUDING THE CITIES OF...LOCKWOOD VALLEY...MOUNT PINOS...ACTON...
MOUNT WILSON...SANDBERG
145 PM PST THU JAN 19 2017

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 9 AM PST
SATURDAY...

* TIMING...SCATTERED SNOW SHOWERS WILL LINGER THROUGH THIS
  EVENING. A SECOND STORM WILL BRING MORE HEAVY SNOW FRIDAY INTO
  EARLY SATURDAY.

* SNOW LEVELS...SNOW LEVELS WILL RANGE FROM 5500 TO 6000 FEET
  TONIGHT THEN RISE TO 6000 TO 6500 FRIDAY BEFORE FALLING TO 4500
  TO 5000 FEET FRIDAY NIGHT INTO SATURDAY MORNING.

* SNOW ACCUMULATION...5 TO 10 INCHES ABOVE 7000 FEET FRIDAY INTO
  FRIDAY NIGHT WITH LIGHTER ACCUMULATIONS DOWN TO 5000 FEET. 

* WINDS...SOUTH WINDS 20 TO 30 MPH WITH GUSTS TO 50 MPH FRIDAY
  INTO FRIDAY EVENING.

* IMPACTS...PERIODS OF SNOW...GUSTY WINDS...AND LOW VISIBILITIES 
  WILL MAKE FOR DANGEROUS DRIVING CONDITIONS AND COULD LEAD TO 
  TRAVEL PROBLEMS ON HIGHER MOUNTAIN ROADS. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

ONLY TRAVEL INTO THE MOUNTAINS IN AN EMERGENCY. IF YOU MUST
TRAVEL...CHECK THE LATEST ROAD REPORTS BEFORE DEPARTING. KEEP AN
EMERGENCY KIT IN YOUR VEHICLE WHICH INCLUDES A FLASHLIGHT... FOOD
AND WATER... EXTRA CLOTHES AND BLANKETS... AND TIRE CHAINS.

&&

$$

MW

216 
WWUS46 KLOX 200430
WSWLOX

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE LOS ANGELES/OXNARD CA
830 PM PST THU JAN 19 2017

...MODERATE TO HEAVY SNOW WITH STRONG WINDS EXPECTED IN THE
MOUNTAINS OF VENTURA AND LOS ANGELES COUNTIES THROUGH SATURDAY
MORNING...

.SCATTERED SNOW SHOWERS CAN BE EXPECTED THIS EVENING BEFORE THE
SECOND STORM ARRIVES EARLY FRIDAY. THIS WILL GENERATE ANOTHER
ROUND OF HEAVY SNOW ON FRIDAY AT HIGHER ELEVATIONS...THEN LIGHT
ACCUMULATIONS BETWEEN 4000 AND 5000 FEET FRIDAY NIGHT INTO EARLY
SATURDAY.

A THIRD STORM IS EXPECTED ON SUNDAY BUT SNOW LEVELS ARE EXPECTED
TO RISE TO OVER 9000' SO LITTLE TO NO SNOW ACCUMULATION IS
EXPECTED UNTIL SUNDAY NIGHT AND MONDAY WHEN COLDER AIR ARRIVES.

CAZ053-054-201230-
/O.CON.KLOX.WS.W.0001.000000T0000Z-170121T1700Z/
VENTURA COUNTY MOUNTAINS-
LOS ANGELES COUNTY MOUNTAINS EXCLUDING THE SANTA MONICA RANGE-
INCLUDING THE CITIES OF...LOCKWOOD VALLEY...MOUNT PINOS...ACTON...
MOUNT WILSON...SANDBERG
830 PM PST THU JAN 19 2017

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 9 AM PST
SATURDAY...

* TIMING...SCATTERED SNOW SHOWERS WILL LINGER THROUGH THIS 
  EVENING. A SECOND STORM WILL BRING MORE HEAVY SNOW FRIDAY INTO 
  EARLY SATURDAY. 

* SNOW LEVELS...SNOW LEVELS WILL RANGE FROM 5000 TO 6000 FEET
  TONIGHT THEN RISE TO 5500 TO 6500 FEET FRIDAY BEFORE FALLING TO
  4000 TO 5000 FEET FRIDAY NIGHT INTO SATURDAY MORNING.

* SNOW ACCUMULATION...5 TO 10 INCHES ABOVE 6000 FEET THROUGH
  SATURDAY MORNING, WITH ISOLATED AMOUNTS UP TO 16 INCHES ABOVE
  7000 FEET. LIGHT ACCUMULATIONS EXPECTED BETWEEN 4000 AND 5000
  FEET FRIDAY NIGHT INTO EARLY SATURDAY.

* WINDS...SOUTH TO SOUTHWEST WINDS INCREASING TO 25 TO 40 MPH WITH
  DAMAGING GUSTS TO 65 MPH FRIDAY INTO FRIDAY EVENING.

* IMPACTS...PERIODS OF SNOW...GUSTY WINDS...AND LOW VISIBILITIES
  WILL MAKE FOR DANGEROUS DRIVING CONDITIONS AND COULD LEAD TO
  TRAVEL PROBLEMS ON HIGHER MOUNTAIN ROADS. THERE IS A CHANCE OF
  LIGHT SNOW SHOWERS ACROSS INTERSTATE 5 NEAR THE GRAPEVINE LATE
  FRIDAY NIGHT INTO EARLY SATURDAY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

ONLY TRAVEL INTO THE MOUNTAINS IN AN EMERGENCY. IF YOU MUST
TRAVEL...CHECK THE LATEST ROAD REPORTS BEFORE DEPARTING. KEEP AN
EMERGENCY KIT IN YOUR VEHICLE WHICH INCLUDES A FLASHLIGHT... FOOD
AND WATER... EXTRA CLOTHES AND BLANKETS... AND TIRE CHAINS.

&&

$$

GOMBERG/MW

143 
WWUS46 KLOX 201229
WSWLOX

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE LOS ANGELES/OXNARD CA
429 AM PST FRI JAN 20 2017

...MODERATE TO HEAVY SNOW AND STRONG WINDS EXPECTED IN THE MOUNTAINS
OF VENTURA AND LOS ANGELES COUNTIES THROUGH SATURDAY MORNING...

.PERIODS OF SNOW WILL BECOME HEAVY AT TIMES IN THE MOUNTAINS THIS
MORNING AND CONTINUE THROUGH THIS EVENING. NUMEROUS SNOW SHOWERS
WILL THEN CONTINUE THROUGH SATURDAY MORNING. SNOW LEVELS WILL BE
BETWEEN 5500 AND 6500 FEET TODAY...THEN WILL LOWER TO BETWEEN 4000
AND 5000 FEET TONIGHT AND EARLY SATURDAY. THERE IS A SMALL CHANCE
THAT SNOW COULD CAUSE TRAVEL PROBLEMS LATE TONIGHT AND SATURDAY
MORNING ON PORTIONS OF INTERSTATE 5 THROUGH THE GRAPEVINE...AND
MORE LIKELY ON HIGHWAY 33 IN VENTURA COUNTY.

ADDITIONAL SNOW ACCUMULATIONS OF 5 TO 10 INCHES ARE EXPECTED ABOVE
6000 FEET...WITH LOCAL ADDITIONAL SNOWFALL UP TO 16 INCHES ABOVE
7000 FEET.

SOUTH TO SOUTHWEST WINDS 25 TO 40 MPH WITH GUSTS TO 65 MPH WILL
AFFECT THE MOUNTAINS TODAY...THEN WEST TO NORTHWEST WINDS 25 TO 35
MPH WITH GUSTS TO 60 MPH ARE EXPECTED TONIGHT.

ANOTHER POWERFUL STORM WILL AFFECT THE REGION SUNDAY INTO MONDAY.
SNOW LEVELS WITH THAT STORM ARE EXPECTED TO BE RATHER HIGH...AT
LEAST INITIALLY...MAINLY ABOVE 8500 FEET. THEREFORE... LITTLE TO
NO SNOW ACCUMULATION IS EXPECTED FROM THAT SYSTEM UNTIL SUNDAY
NIGHT AND MONDAY WHEN COLDER AIR ARRIVES.

CAZ053-054-202030-
/O.CON.KLOX.WS.W.0001.000000T0000Z-170121T1700Z/
VENTURA COUNTY MOUNTAINS-
LOS ANGELES COUNTY MOUNTAINS EXCLUDING THE SANTA MONICA RANGE-
INCLUDING THE CITIES OF...LOCKWOOD VALLEY...MOUNT PINOS...ACTON...
MOUNT WILSON...SANDBERG
429 AM PST FRI JAN 20 2017

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 9 AM PST
SATURDAY...

* TIMING...PERIODS OF SNOW WILL BECOME HEAVY AT TIMES THIS MORNING
  THEN CONTINUE THROUGH THIS EVENING. NUMEROUS SNOW SHOWERS ARE
  EXPECTED TONIGHT AND EARLY SATURDAY.

* SNOW LEVELS...BETWEEN 5500 AND 6500 FEET TODAY...THEN BETWEEN
  4000 AND 5000 FEET TONIGHT AND EARLY SATURDAY.

* SNOW ACCUMULATION...5 TO 10 INCHES ABOVE 6000 FEET THROUGH
  SATURDAY MORNING...WITH LOCAL ADDITIONAL SNOWFALL UP TO 16
  INCHES ABOVE 7000 FEET. LIGHT ACCUMULATIONS ARE POSSIBLE BETWEEN
  4000 AND 5000 FEET LATE TONIGHT INTO EARLY SATURDAY.

* WINDS...SOUTH TO SOUTHWEST 25 TO 40 MPH WITH DAMAGING GUSTS TO
  65 MPH TODAY...BECOMING WEST TO NORTHWEST 25 TO 35 MPH WITH
  GUSTS TO 60 MPH LATER TODAY INTO TONIGHT.

* IMPACTS...PERIODS OF SNOW...GUSTY WINDS...AND LOW VISIBILITIES
  WILL MAKE FOR DANGEROUS DRIVING CONDITIONS AND COULD LEAD TO
  TRAVEL PROBLEMS ON HIGHER MOUNTAIN ROADS. THERE IS A SMALL
  CHANCE THAN SNOW COULD AFFECT TRAVEL ACROSS INTERSTATE 5 NEAR
  THE GRAPEVINE LATE TONIGHT INTO EARLY SATURDAY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

ONLY TRAVEL INTO THE MOUNTAINS IN AN EMERGENCY. IF YOU MUST
TRAVEL...CHECK THE LATEST ROAD REPORTS BEFORE DEPARTING. KEEP AN
EMERGENCY KIT IN YOUR VEHICLE WHICH INCLUDES A FLASHLIGHT... FOOD
AND WATER... EXTRA CLOTHES AND BLANKETS... AND TIRE CHAINS.

&&

$$

DB/CAK

881 
WWUS46 KLOX 202043
WSWLOX

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE LOS ANGELES/OXNARD CA
1243 PM PST FRI JAN 20 2017

...MODERATE TO HEAVY SNOW AND STRONG WINDS EXPECTED IN THE
MOUNTAINS OF VENTURA AND LOS ANGELES COUNTIES THROUGH SATURDAY
MORNING...

.PERIODS OF SNOW, HEAVY AT TIMES WILL CONTINUE THROUGH THIS
EVENING. NUMEROUS SNOW SHOWERS WILL THEN CONTINUE THROUGH SATURDAY
MORNING. SNOW LEVELS WILL BE BETWEEN 4500 AND 5500 FEET
TODAY...THEN WILL LOWER TO BETWEEN 4000 AND 5000 FEET TONIGHT AND
EARLY SATURDAY. THERE IS A SMALL CHANCE THAT SNOW COULD CAUSE
TRAVEL PROBLEMS LATE TONIGHT AND SATURDAY MORNING ON PORTIONS OF
INTERSTATE 5 THROUGH THE GRAPEVINE...AND MORE LIKELY ON HIGHWAY 33
IN VENTURA COUNTY.

ADDITIONAL SNOW ACCUMULATIONS OF 5 TO 10 INCHES ARE EXPECTED
ABOVE 6000 FEET...WITH LOCAL ADDITIONAL SNOWFALL UP TO 16 INCHES
ABOVE 7000 FEET.

SOUTH TO SOUTHWEST WINDS 25 TO 40 MPH WITH GUSTS TO 65 MPH WILL
AFFECT THE MOUNTAINS TODAY...THEN WEST TO NORTHWEST WINDS 25 TO
35 MPH WITH GUSTS TO 60 MPH ARE EXPECTED TONIGHT.

ANOTHER POWERFUL STORM WILL AFFECT THE REGION SUNDAY INTO MONDAY.
SNOW LEVELS WITH THAT STORM ARE EXPECTED TO BE RATHER HIGH...AT
LEAST INITIALLY...MAINLY ABOVE 8500 FEET. THEREFORE... LITTLE TO
NO SNOW ACCUMULATION IS EXPECTED FROM THAT SYSTEM UNTIL SUNDAY
NIGHT AND MONDAY WHEN COLDER AIR ARRIVES.

CAZ053-054-210800-
/O.CON.KLOX.WS.W.0001.000000T0000Z-170121T1700Z/
VENTURA COUNTY MOUNTAINS-
LOS ANGELES COUNTY MOUNTAINS EXCLUDING THE SANTA MONICA RANGE-
INCLUDING THE CITIES OF...LOCKWOOD VALLEY...MOUNT PINOS...ACTON...
MOUNT WILSON...SANDBERG
1243 PM PST FRI JAN 20 2017

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 9 AM PST
SATURDAY...

* TIMING...PERIODS OF SNOW...HEAVY AT TIMES THROUGH THIS EVENING.
  NUMEROUS SNOW SHOWERS ARE EXPECTED TONIGHT AND EARLY SATURDAY.

* SNOW LEVELS...BETWEEN 4500 AND 5500 FEET TODAY...THEN BETWEEN
  4000 AND 5000 FEET TONIGHT AND EARLY SATURDAY.

* SNOW ACCUMULATION...5 TO 10 INCHES ABOVE 6000 FEET THROUGH 
  SATURDAY MORNING...WITH LOCAL ADDITIONAL SNOWFALL UP TO 16 
  INCHES ABOVE 7000 FEET. LIGHT ACCUMULATIONS ARE POSSIBLE 
  BETWEEN 4000 AND 5000 FEET LATE TONIGHT INTO EARLY SATURDAY. 

* WINDS...SOUTH TO SOUTHWEST 25 TO 40 MPH WITH DAMAGING GUSTS TO 
  65 MPH TODAY...BECOMING WEST TO NORTHWEST 25 TO 35 MPH WITH 
  GUSTS TO 60 MPH LATER TODAY INTO TONIGHT. 

* IMPACTS...PERIODS OF SNOW...GUSTY WINDS...AND LOW VISIBILITIES 
  WILL MAKE FOR DANGEROUS DRIVING CONDITIONS AND COULD LEAD TO 
  TRAVEL PROBLEMS ON HIGHER MOUNTAIN ROADS. THERE IS A SMALL 
  CHANCE THAN SNOW COULD AFFECT TRAVEL ACROSS INTERSTATE 5 NEAR 
  THE GRAPEVINE LATE TONIGHT INTO EARLY SATURDAY. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

ONLY TRAVEL INTO THE MOUNTAINS IN AN EMERGENCY. IF YOU MUST
TRAVEL...CHECK THE LATEST ROAD REPORTS BEFORE DEPARTING. KEEP AN
EMERGENCY KIT IN YOUR VEHICLE WHICH INCLUDES A FLASHLIGHT... FOOD
AND WATER... EXTRA CLOTHES AND BLANKETS... AND TIRE CHAINS.

&&

$$

MW

775 
WWUS46 KLOX 210803
WSWLOX

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE LOS ANGELES/OXNARD CA
1203 AM PST SAT JAN 21 2017

CAZ053-054-211700-
/O.CON.KLOX.WS.W.0001.000000T0000Z-170121T1700Z/
VENTURA COUNTY MOUNTAINS-
LOS ANGELES COUNTY MOUNTAINS EXCLUDING THE SANTA MONICA RANGE-
INCLUDING THE CITIES OF...LOCKWOOD VALLEY...MOUNT PINOS...ACTON...
MOUNT WILSON...SANDBERG
1203 AM PST SAT JAN 21 2017

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 9 AM PST THIS
MORNING...

* TIMING...PERIODS OF LIGHT SNOW...ARE EXPECTED THROUGH EARLY
  THIS MID MORNING.

* SNOW LEVELS...BETWEEN 4000 AND 5000 FEET THROUGH MID MORNING.

* SNOW ACCUMULATION...5 TO 10 INCHES ABOVE 6000 FEET HAS ALREADY
  FALLEN WITH ADDITIONAL LIGHT ACCUMULATIONS EXPECTED THROUGH MID
  MORNING. LIGHT ACCUMULATIONS ARE ALSO POSSIBLE BETWEEN 4000 AND
  5000 FEET THROUGH THIS MORNING.

* WINDS...WEST TO NORTHWEST 25 TO 35 MPH WITH GUSTS TO 60 MPH
  THROUGH MID MORNING.

* IMPACTS...PERIODS OF SNOW...GUSTY WINDS...AND LOW VISIBILITIES
  WILL MAKE FOR DANGEROUS DRIVING CONDITIONS AND COULD LEAD TO
  TRAVEL PROBLEMS ON HIGHER MOUNTAIN ROADS. THERE IS A SMALL
  CHANCE THAN SNOW COULD AFFECT TRAVEL ACROSS INTERSTATE 5 NEAR
  THE GRAPEVINE THROUGH MID MORNING.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

ONLY TRAVEL INTO THE MOUNTAINS IN AN EMERGENCY. IF YOU MUST
TRAVEL...CHECK THE LATEST ROAD REPORTS BEFORE DEPARTING. KEEP AN
EMERGENCY KIT IN YOUR VEHICLE WHICH INCLUDES A FLASHLIGHT... FOOD
AND WATER... EXTRA CLOTHES AND BLANKETS... AND TIRE CHAINS.

&&

$$

KAPLAN

822 
WWUS46 KLOX 211052
WSWLOX

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE LOS ANGELES/OXNARD CA
252 AM PST SAT JAN 21 2017

...WINTER STORM WARMING HAS BEEN CANCELLED FOR THE LOS ANGELES
AND VENTURA COUNTY MOUNTAINS...

.THERE WILL CONTINUE TO BE VERY WINDY CONDITIONS ACROSS THE
MOUNTAINS THROUGH MID AFTERNOON...THEREFORE WITH ONLY A FEW SNOW
FLURRIES EXPECTED THROUGH EARLY THIS MORNING...WILL CONVERT TO A
WIND ADVISORY FOR THE LOS ANGELES AND VENTURA COUNTY MOUNTAINS.

CAZ053-054-211200-
/O.CAN.KLOX.WS.W.0001.000000T0000Z-170121T1700Z/
VENTURA COUNTY MOUNTAINS-
LOS ANGELES COUNTY MOUNTAINS EXCLUDING THE SANTA MONICA RANGE-
INCLUDING THE CITIES OF...LOCKWOOD VALLEY...MOUNT PINOS...ACTON...
MOUNT WILSON...SANDBERG
252 AM PST SAT JAN 21 2017

...WINTER STORM WARNING IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN LOS ANGELES/OXNARD HAS CANCELLED
THE WINTER STORM WARNING. 

THE SNOW HAS DIMINISHED EARLY THIS MORNING. THERE COULD BE A FEW
ISOLATED SNOW FLURRIES ABOVE 4000 FT THROUGH EARLY THIS MORNING.
WITH WINDS EXPECTED TO REMAIN GUSTY...WILL CONVERT TO A WIND
ADVISORY FOR BOTH THE LOS ANGELES AND VENTURA COUNTY MOUNTAINS
THROUGH THIS AFTERNOON.

$$

KAPLAN

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LOS ANGELES/OXNARD CA
158 PM PST Wed Jan 18 2017

.SYNOPSIS...
Several storms will bring precipitation and gusty winds through
early next week. There may be a chance of thunderstorms on Thursday
and Friday. The first storm will move in Wednesday and Thursday.
The second...from late Thursday into early Saturday and will have
heavy rain especially in the foothills...and lower snow levels.
The third will be on Sunday into Monday and have the highest
precipitation amounts. The temperatures will be below normal into
next week.

&&

.SHORT TERM...(TDY-SAT)

First of at least three storms to impact our area through early
next week is just now approaching the Central Coast this
afternoon. There have been a few light showers out ahead of it but
the main part of the system is still to the north. Rainfall will
increase in areal coverage and intensity this evening as southerly
flow intensifies and stronger dynamics arrive with the colder air
aloft. Models have been adverstising at least some minimal
instability and an isolated thunderstorm or two is certainly
possible, mainly with the cold front itself, which will be mainly
after midnight tonight into Thursday morning. Rain rates with this
system, especially in and around thunderstorms, could reach or
briefly exceed criteria in our more susceptible burn areas, mainly
the fish and the sand burns, so a flash flood watch has been
issued to cover those areas later tonight through Thursday
morning. Overall rain numbers still look good, mainly around an
inch for lower elevations and up to 2" in the upslope areas.

Snow levels will be lowering to around 6000' later tonight and as
low as 5000' Thursday morning as the cold front passes. 5-10" of
snow are possible at the higher elevations, mainly above 7000'.
Because of the relatively small gap between this storm and the
second and the likelihood that both will generate at least
marginal warning level snow amounts for higher elevations the
decision was made to convert the winter weather advisory into a
winter storm warning and extend it into Saturday morning to cover
the second storm.

Rain and snow should taper off pretty rapidly Thursday morning
with mainly just some lingering afternoon showers over the higher
terrain. The second system will start bringing rain to NW SLO
County late Thursday night and to the remainder of the area
Friday, tarpering off Friday afternoon and evening. The low lvl
southerly winds are a bit stronger with this second one and model
qpf is a quarter to half inch higher which makes sense. Once again
model instability wasn't super impressive but certainly enough to
warrant a slight chance of thunderstorms across the area Friday.
This will likely require another flash flood watch for the burn
areas. Rain and snow amounts expected to be slightly higher with
this second system.

Winds at low levels and aloft shift to the west Friday afternoon
and northwest Friday night which should help shower coverage
diminish, especially at lower elevations south of Pt Conception.
Additional drying and low lvl subsidence should keep most of the
area dry Saturday except for possibly some isolated showers over
the mountains and Central Coast. A cool and breezy day however
with lower elevations mostly in the 50s to low 60s.

.LONG TERM...(SUN-WED)

The biggest change in the models today came with the timing of the
third system, which had been pegged for a late Sunday through
early Monday arrival. However, today's runs have sped that up a
good 12 hours, so now most of Sunday looks wet with the heaviest
period in the morning up north and late afternoon and evening in
LA County. There's also a considerable spread in the models with
precip amounts. The operational GFS is by far the outlier, a good
2" higher than the ensemble mean as well as the ECMWF. So while
confidence is high in a decent rain event Sunday, not real
confident on the amounts. The ensemble mean and ECMWF would
support a rain event that is similar to the previous two storms.
But if the operational GFS prediction of 50-60kt south winds at
850 comes to fruition then certainly the higher amounts would be
more likely. The GFS is also showing higher pwats with this
system, around 1.4" Sunday, which is up a good half inch from the
two earlier storms.

This also leads to considerable uncertainty with snow levels as
the GFS is tapping into a much warmer subtropical air mass and
freezing levels rise to over 10000'. The other models keep the
snow level fairly similar as before but with less moisture to work
with. So low confidence on the details with storm #3.

Much colder air is expected to arrive Monday, though here again
significant model differences are leading to lower confidence in
amounts. Snow level should drop to at least 4000' Monday, perhaps
as low as 3000' as thicknesses drop to around 531dm. The ECMWF is
the more aggressive model here pushing through a 4th and colder
system Monday that could lead to some additional heavy rain and
snow into Monday evening.

Most areas should start drying out Tuesday as northerly flow takes
over. Still quite cool through about Wednesday then warming up
later in the week.

&&

.AVIATION...18/18Z.

At 17Z at KLAX... the inversion was around 2500 feet. The top of
the inversion was around 3100 feet with a temperature of about 8
degrees Celsius.

Overall... Low to moderate confidence in the TAFs. The reduced
confidence is primarily due to the uncertainty in the timing of
the weather. Light precipitation will be moving through the
Central Coast locations this morning. The primary band of
precipitation will move onshore north of Point Conception early
this afternoon and then south to Los Angeles County by late
afternoon. The heaviest precipitation comes overnight through
early morning. MVFR conditions will accompany the arrival of the
precipitation and then IFR conditions develop overnight.
Southwesterly winds will increase through the afternoon across the
region then turn southeasterly overnight. There is a slight chance
of thunderstorms overnight and Thursday morning.

KLAX... Low to moderate confidence in the TAF. The reduced
confidence is primarily due to the uncertainty in the timing of
the weather. Precipitation will arrive this afternoon but the
heaviest precipitation comes overnight through early morning. MVFR
conditions will accompany the arrival of the precipitation and
then IFR conditions develop overnight. Winds will be light and
variable this morning then southwesterly winds will increase
through the afternoon and turn southeasterly overnight. There is a
slight chance of thunderstorms Thursday morning.

KBUR... Low to moderate confidence in the TAF. The reduced
confidence is primarily due to the uncertainty in the timing of
the weather. Precipitation will arrive this afternoon but the
heaviest precipitation comes overnight through early morning. MVFR
conditions will accompany the arrival of the precipitation and
then IFR conditions develop overnight. Winds will be light and
variable this morning then southwesterly winds will increase
through the afternoon and turn southeasterly overnight. There is a
slight chance of thunderstorms Thursday morning.

&&

.MARINE...18/200 PM.

For all coastal waters north of Point Conception... Small Craft
Advisory (SCA) level winds will increase through the day and reach
Gale Warning level gusts tonight through early Thursday morning.

For the southern outer waters south of Point Conception... Winds
will increase to SCA level by late afternoon through early
Thursday morning.

For the inner waters south of Point Conception... Southerly
winds will increase to SCA level winds this evening across the
Santa Barbara Channel and then south to the waters off Los Angeles
County during the overnight period.

Across all of the waters... Winds will lessen Thursday night then
increase again early Friday to at least SCA levels and remain
elevated through at least Saturday. There is a slight chance of
thunderstorms tonight into Thursday and again on Friday.

A large long period swell will arrive in the coastal waters on
Thursday then another but larger swell will arrive Friday night
into Saturday. This second swell will likely reach heights of more
than 20 feet over the northern outer waters late Friday night into
Saturday.

&&

.LOX WATCHES/WARNINGS/ADVISORIES...
CA...Wind Advisory in effect from 7 PM this evening to 4 AM PST
      Thursday for zones 34>38-51-52. (See LAXNPWLOX).
     High Surf Advisory in effect from 4 AM Thursday to 9 PM PST
      Tuesday for zones 34-35. (See LAXCFWLOX).
     High Surf Advisory in effect from 4 PM Thursday to 9 PM PST
      Tuesday for zones 39>41-87. (See LAXCFWLOX).
     Winter Storm Warning in effect from 10 PM this evening to 9
      AM PST Saturday for zones 53-54. (See LAXWSWLOX).
     Flash Flood Watch in effect from late tonight through
      Thursday morning for zones 54-88-548. (See LAXFFALOX).
PZ...Small Craft Advisory in effect until 3 PM PST this afternoon
      for zones 645-670-673. (See LAXMWWLOX).
     Gale Warning in effect until 3 AM PST Thursday for zones
      645-670-673. (See LAXMWWLOX).
     Small Craft Advisory in effect from 9 PM this evening to 9 PM
      PST Thursday for zone 650. (See LAXMWWLOX).
     Gale Watch in effect from Friday morning through Saturday
      morning for zone 650. (See LAXMWWLOX).
     Gale Watch in effect from Friday morning through Saturday
      afternoon for zone 655. (See LAXMWWLOX).
     Small Craft Advisory in effect until 3 AM PST Friday for zone
      676. (See LAXMWWLOX).
     Gale Watch in effect from late Thursday night through
      Saturday afternoon for zone 676. (See LAXMWWLOX).

&&

.HAZARD POTENTIAL OUTLOOK...(SAT-WED)
Periods of heavy rain and mountain snow are expected Sunday and
Monday that could pose hazards to burn areas and drop significant
snow amounts in the mountains. There is a chance of damaging
warning level surf and coastal flooding issues Saturday,
especially along the Central Coast.

&&

PUBLIC...MW
AVIATION...Kj
MARINE...Kj
SYNOPSIS...STU

weather.gov/losangeles