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Special Weather Statement


SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GRAND JUNCTION CO
348 PM MDT FRI OCT 31 2014

COZ001>014-017>023-UTZ022>025-027>029-011000-
LOWER YAMPA RIVER BASIN-CENTRAL YAMPA RIVER BASIN-
ROAN AND TAVAPUTS PLATEAUS-ELKHEAD AND PARK MOUNTAINS-
UPPER YAMPA RIVER BASIN-GRAND VALLEY-DEBEQUE TO SILT CORRIDOR-
CENTRAL COLORADO RIVER BASIN-GRAND AND BATTLEMENT MESAS-
GORE AND ELK MOUNTAINS/CENTRAL MOUNTAIN VALLEYS-
CENTRAL GUNNISON AND UNCOMPAHGRE RIVER BASIN-
WEST ELK AND SAWATCH MOUNTAINS-FLATTOPS-
UPPER GUNNISON RIVER VALLEY-UNCOMPAHGRE PLATEAU AND DALLAS DIVIDE-
NORTHWEST SAN JUAN MOUNTAINS-SOUTHWEST SAN JUAN MOUNTAINS-
PARADOX VALLEY/LOWER DOLORES RIVER-
FOUR CORNERS/UPPER DOLORES RIVER-ANIMAS RIVER BASIN-
SAN JUAN RIVER BASIN-SOUTHEAST UTAH-EASTERN UINTA MOUNTAINS-
EASTERN UINTA BASIN-TAVAPUTS PLATEAU-ARCHES/GRAND FLAT-
LA SAL AND ABAJO MOUNTAINS-CANYONLANDS/NATURAL BRIDGES-
INCLUDING THE CITIES OF...RANGELY...DINOSAUR...CRAIG...HAYDEN...
MEEKER...RIO BLANCO...COLUMBINE...TOPONAS...
STEAMBOAT SPRINGS AND VICINITY...GRAND JUNCTION...FRUITA...
PALISADE...RIFLE...SILT...PARACHUTE...MESA...GLENWOOD SPRINGS...
EAGLE...CARBONDALE...SKYWAY...ASPEN...VAIL...SNOWMASS...
CEDAREDGE...DELTA...HOTCHKISS...MONTROSE...CRESTED BUTTE...
TAYLOR PARK...MARBLE...BUFORD...TRAPPERS LAKE...GUNNISON...
CIMARRON...RIDGWAY...GLADE PARK...OURAY...TELLURIDE...LAKE CITY...
SILVERTON...RICO...HESPERUS...GATEWAY...NUCLA...CORTEZ...
DOVE CREEK...MANCOS...DURANGO...BAYFIELD...IGNACIO...
PAGOSA SPRINGS AND VICINITY...BLANDING...BLUFF...MEXICAN HAT...
MANILA...DUTCH JOHN...VERNAL...JENSEN...BALLARD...FORT DUCHESNE...
RANDLETT...MOAB...CASTLE VALLEY...THOMPSON SPRINGS...
MONTICELLO AND VICINITY
348 PM MDT FRI OCT 31 2014

...CHANGING WEATHER THIS WEEKEND WILL BRING WIND AND MOUNTAIN SNOW...

A COLD PACIFIC STORM SYSTEM WILL MOVE INLAND TONIGHT AND ACROSS THE
GREAT BASIN THIS WEEKEND...SPLITTING INTO TWO PARTS AS IT DOES SO.
THIS WILL LEAD TO A VARIETY OF WEATHER THIS WEEKEND...INCLUDING
WIND...VALLEY RAIN AND MOUNTAIN SNOW AT VARIOUS TIMES THROUGH SUNDAY
NIGHT.

EXPECT WINDY BUT STILL MILD CONDITIONS ON SATURDAY AS THE MAIN PART
OF THIS STORM SYSTEM REMAINS TO THE WEST. GUSTS OF 30 TO 40 MPH ARE
ANTICIPATED...ESPECIALLY IN THE VALLEYS OF SOUTHEASTERN UTAH AND
NORTHWESTERN COLORADO AND EXPOSED MOUNTAIN AREAS. SCATTERED SHOWERS
AND AN ISOLATED THUNDERSTORM OR TWO ARE ALSO EXPECTED.

COLDER AIR ARRIVES LATE SATURDAY NIGHT AND SUNDAY WITH AN INCREASING
CHANCE OF RAIN AND MOUNTAIN SNOW. THE BEST SNOW ACCUMULATIONS ARE
CURRENTLY EXPECTED OVER THE MOUNTAINS SUNDAY NIGHT AS THE SOUTHERN
PART OF THE STORM APPROACHES. SNOW LEVELS WILL LOWER TO BETWEEN 7000
AND 8000 FEET WITH THE ARRIVAL OF THE COLD AIR. ABOVE 9000 FEET...3
TO 6 INCHES OF NEW SNOW WILL POSSIBLE...WITH LOCALLY HIGHER AMOUNTS
MEASURED IN A FEW LOCATIONS BY MONDAY MORNING.

ON MONDAY...COLDER AND UNSETTLED CONDITIONS KEEP A CHANCE OF RAIN OR
SNOW SHOWERS IN THE FORECAST DURING THE DAY...WITH IMPROVING
CONDITIONS EXPECTED THROUGH THE EVENING.

THIS IS A COMPLICATED STORM WITH UNCERTAINTY IN BOTH TIMING AND
PRECIPITATION TYPE...BOTH OF WHICH WILL AFFECT WHERE THE GREATEST
SNOW WILL OCCUR. IF TRAVELING...RECREATING OR HUNTING IN THE
MOUNTAINS THIS WEEKEND...BE SURE TO CHECK THE LATEST FORECASTS.

$$

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE LOS ANGELES/OXNARD CA
450 AM PDT FRI OCT 31 2014

CAZ034>041-044>046-051>054-059-087-088-547-548-010100-
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-
450 AM PDT FRI OCT 31 2014

...PACIFIC STORM SYSTEM TO AFFECT SOUTHWESTERN CALIFORNIA THIS
AFTERNOON THROUGH SATURDAY...

A COLD UPPER LEVEL TROUGH OF LOW PRESSURE AND SURFACE COLD FRONT
WILL BRING PERIODS OF RAIN...MOUNTAIN SNOW...POSSIBLE
THUNDERSTORMS...AND GUSTY WINDS TO SOUTHWESTERN CALIFORNIA THIS
AFTERNOON THROUGH SATURDAY.

A FAST MOVING COLD FRONT WILL SPREAD RAIN ALONG THE CENTRAL COAST
THIS AFTERNOON...THEN SPREAD INTO VENTURA AND LOS ANGELES COUNTIES
THIS EVENING. SHOWERS WILL PERSIST INTO SATURDAY MORNING ACROSS THE
REGION...WITH A CHANCE OF RESIDUAL SHOWERS MAINLY ON NORTH FACING
MOUNTAIN SLOPES FROM SATURDAY AFTERNOON THROUGH EARLY SUNDAY
MORNING. MOST AREAS ARE EXPECTED TO SEE 3 TO 4 HOURS OF STEADY RAIN
WITH THE INITIAL FRONT...THEN TURN SHOWERY AS THE FRONT MOVES EAST.
THERE WILL ALSO BE A SLIGHT CHANCE OF THUNDERSTORMS OVER SAN LUIS
OBISPO AND SANTA BARBARA COUNTIES TONIGHT AS COLDER AIR MOVES IN
ALOFT. ANY THUNDERSTORMS WOULD HAVE THE POTENTIAL TO BRING BRIEF
HEAVY RAIN AND SMALL HAIL.

RAINFALL AMOUNTS FROM THIS AFTERNOON THROUGH SATURDAY ARE GENERALLY
EXPECTED TO RANGE BETWEEN THREE QUARTERS OF AN INCH TO ONE AND ONE
HALF INCHES ALONG THE CENTRAL COAST...WITH HIGHER AMOUNTS ACROSS
NORTHWESTERN SAN LUIS OBISPO COUNTY. OTHERWISE RAINFALL AMOUNTS OF
ONE QUARTER TO THREE QUARTERS OF AN INCH CAN BE EXPECTED FOR MOST
AREAS...WITH LOCAL AMOUNTS UP TO ONE INCH IN THE SAN GABRIEL
MOUNTAINS.

SNOW LEVELS WILL START OUT ABOVE 7500 FEET THROUGH THIS AFTERNOON
THEN FALL TO 6000 TO 6500 FEET BY SATURDAY MORNING. MOST OF THE
STEADY PRECIPITATION SHOULD BE OVER BEFORE THE SNOW LEVELS LOWER
SIGNIFICANTLY. EVEN SO...1 TO 3 INCHES OF SNOW ACCUMULATION WILL BE
POSSIBLE FOR THE SAN GABRIEL MOUNTAINS AROUND 7000 FEET AND
ABOVE...WITH AN INCH OR LESS BETWEEN 6000 AND 7000 FEET. WITH THE
EXPECTED SNOWFALL COMBINED WITH GUSTY WINDS...DRIVING CONDITIONS IN
THE MOUNTAINS COULD BE DIFFICULT TONIGHT.

SOUTHWEST WINDS GUSTING TO AROUND 40 MPH ARE ALSO EXPECTED OVER
THE MOUNTAINS OF VENTURA AND LOS ANGELES COUNTIES AND IN THE
ANTELOPE VALLEY THIS AFTERNOON AND TONIGHT IN ADVANCE OF THE FRONT.
WINDS WILL TURN NORTHWEST OVER THE AREA BY SATURDAY MORNING WITH
GUSTS AROUND 40 MPH POSSIBLE IN THE MOUNTAINS AND ANTELOPE VALLEY.

RESIDENTS NEAR THE COLBY BURN AREA SHOULD MONITOR THE LATEST
NATIONAL WEATHER SERVICE FORECASTS AND STATEMENTS AS THE POTENTIAL
FOR LOCALLY HEAVY DOWNPOURS TONIGHT COULD BRING THE THREAT OF MINOR
MUD AND DEBRIS FLOWS.

SINCE THIS WILL BE THE FIRST WIDESPREAD RAIN EVENT IN QUITE SOME
TIME...ROADS WILL BE EXTRA SLICK DUE TO MONTHS OF OIL BUILDUP ON
PAVED SURFACES. MOTORISTS ARE URGED TO USE EXTRA CAUTION IN THE
RAIN. IN ADDITION...PEOPLE PLANNING TO TRAVEL INTO THE MOUNTAINS
SHOULD BE PREPARED FOR WINTER WEATHER DRIVING CONDITIONS OVER THE
HIGHER ELEVATIONS.

LISTEN TO NOAA WEATHER RADIO OR YOUR LOCAL MEDIA FOR THE LATEST
UPDATES ON THIS STORM SYSTEM.

$$

RAT/ASR

U.S. Dept. of Commerce
NOAA National Weather Service
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Silver Spring, MD 20910
E-mail: w-nws.webmaster@noaa.gov
Page last modified: June 2, 2009
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