Wind Advisory 6, NWS Sacramento, CA

000 
WWUS76 KSTO 021008
NPWSTO

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE SACRAMENTO CA
208 AM PST THU MAR 2 2006

CAZ015-016-066-021115-
/O.CAN.KSTO.WI.Y.0006.000000T0000Z-060303T1000Z/
NORTHERN SACRAMENTO VALLEY-CENTRAL SACRAMENTO VALLEY-
NORTHEAST FOOTHILLS/SACRAMENTO VALLEY-
208 AM PST THU MAR 2 2006

...WIND ADVISORY IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN SACRAMENTO HAS CANCELLED THE WIND
ADVISORY FOR THE NORTHERN AND CENTRAL SACRAMENTO VALLEY AND
EAST FOOTHILLS. 

THE FRONTAL BAND WHICH BROUGHT GUSTY WINDS TO THE NORTHERN
SACRAMENTO VALLEY AND FOOTHILLS WEDNESDAY EVENING HAS MOVED INTO
THE SIERRA NEVADA AND AS A RESULT...WINDS HAVE DECREASED.
THEREFORE...THE WINDS ADVISORY HAS BEEN CANCELLED. 

$$

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SACRAMENTO CA
245 PM PST WED MAR 1 2006

.DISCUSSION...
THE NEXT SHOT OF WINTER WEATHER IS BEARING DOWN ON NORTHERN
CALIFORNIA THIS EVENING AND YET THERE REMAINS A FAIR AMOUNT OF
UNCERTAINTY AS TO THE IMPACT IT WILL HAVE...PRIMARILY IN REGARD TO
SNOWFALL AMOUNTS.  PROJECTED QPF AMOUNTS AND TYPICAL SNOWFALL RATIOS
YIELD ONE SET OF NUMBERS WHILE LOCAL EXPERTISE SUGGESTS A HIGHER
RATIO AND THEREFORE HIGHER AMOUNTS.  ADD TO THIS THE SUGGESTION THAT
THE SECOND SHORTWAVE IS DIGGING FARTHER SOUTH AND IS PULLING ENERGY
FROM THE FIRST WAVE SOUTHWARD...WHICH WOULD SUGGEST LOWER SNOWFALL
AMOUNTS IN THE NORTHERN AREAS...AND THE RESULT IS A WIDER RANGE THAN
USUAL OF FORECAST POSSIBILITIES.

OF THE OPTIONS...WE ARE GOING WITH THE LOCAL EXPERTISE. THE COOLER
AIRMASS WILL MORE EFFICIENTLY SQUEEZE THE MOISTURE OUT INTO HIGHER
RATIOS AND EVEN WITH LOWERED QPFS THE RESULT WILL BE FLUFFIER SNOW
AND THEREFORE HIGHER AMOUNTS.  THE TIMING OF THE ONSET OF THIS FIRST
WAVE REMAINS SIMILAR TO EARLIER FORECASTS...THOUGH...WITH THE BRUNT
OF THE WEATHER REACHING THE COASTAL RANGE BY MID EVENING AND
REACHING THE SIERRA NEVADA RANGE BY MIDNIGHT.

AS MENTIONED EARLIER...THE SECOND SHORTWAVE IS DIGGING FARTHER TO
THE SOUTH THAN PREVIOUSLY THOUGHT.  IT NOW APPEARS THAT THE FIRST
SHORTWAVE WILL LINGER LONGER ACROSS THE AREA WITH SHOWERY
PRECIPITATION IN MANY AREAS BY LATE THURSDAY.  THE SECOND WAVE WILL
SHIFT TO THE SOUTH AND MAY STILL BRING HEAVY WEATHER TO THE CENTRAL
AND SOUTHERN PORTIONS OF THE SIERRA NEVADA RANGE.  HOWEVER...IT IS
LESS LIKELY THAT A SECOND STRONG STORM WILL IMPACT THE NORTHERN
AREAS.  FOR ALL AREAS...THE WINDS LOOK TO BE NOT NEARLY AS STRONG
AFTER THURSDAY MORNING AND MOST OF THE WEATHER IMPACTS WILL BE DUE
TO SNOWFALL ALONE.

MIXED INTO THIS PATTERN IS TWO MORE GOOD SHOTS AT THUNDERSTORM
DEVELOPMENT.  BOTH THURSDAY AND FRIDAY BRING A MODERATE AMOUNT OF
INSTABILITY THROUGH THE AREA AND ISOLATED THUNDERSTORMS ARE POSSIBLE
THROUGHOUT THE CENTRAL VALLEY.

IN THE LONGER RANGE...THE WET PATTERN CONTINUES INTO NEXT WEEK.
ONCE THIS CURRENT LOW MOVES THROUGH LATE ON FRIDAY...THE SKIES CLEAR
AGAIN FOR A DAY OR SO BEFORE THE NEXT SYSTEM DROPS IN.  SATURDAY
PLANS LOOK GOOD FOR NOW BUT BY LATE SUNDAY WE BEGIN AGAIN.

&&

.AVIATION...
VFR CONDITIONS LATE THIS AFTERNOON IN THE LOWER ELEVATIONS WITH
AREAS OF MVFR CONDITIONS AND ISOLD IFR CONDITIONS WITH RAIN EARLY
THIS EVENING...THEN SPREADING SOUTH ACROSS THE AREA BY 08Z AS THE
FRONT MOVES INTO NORTHERN CALIFORNIA. SOUTHERLY WIND GUSTS UP TO 60
MPH ARE POSSIBLE OVER THE RIDGES AND UP TO 45 MPH IN THE VALLEY AND
BAY AREA.  SIERNEV MVFR CONDITIONS WILL BECOME WIDESPREAD IFR
CONDITIONS BY 06Z WITH SNOW ABOVE 2000 FEET.

&&

.STO WATCHES/WARNINGS/ADVISORIES...

WINTER STORM WARNING FROM 7 PM THIS EVENING TO 2 PM PST FRIDAY FOR
SHASTA LAKE AREA/NORTHERN SHASTA COUNTY...MOUNTAINS SOUTHWESTERN
SHASTA COUNTY TO NORTHERN LAKE COUNTY.

WINTER STORM WARNING FROM 10 PM THIS EVENING TO 2 PM PST FRIDAY FOR
BURNEY BASIN/EASTERN SHASTA COUNTY...WESTERN PLUMAS COUNTY/LASSEN
PARK.

WINTER STORM WARNING FROM 1 AM THURSDAY MORNING TO 2 PM PST FRIDAY
FOR THE WEST SLOPE OF THE NORTHERN SIERRA NEVADA MOUNTAINS.

WINTER WEATHER ADVISORY FROM 10 PM THIS EVENING TO 2 PM PST FRIDAY
FOR THE HIGHER TERRAIN AROUND CLEAR LAKE AND FOR THE NORTHEAST
SIERRA NEVADA FOOTHILLS.

WINTER WEATHER ADVISORY FROM 1 AM THURSDAY MORNING TO 2 PM PST
FRIDAY FOR THE MOTHERLODE REGION OF THE SIERRA NEVADA FOOTHILLS.
&&

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SACRAMENTO CA
700 AM PST WED MAR 1 2006

CAZ013>019-063-064-066>069-021500-
SHASTA LAKE AREA/NORTHERN SHASTA COUNTY-
BURNEY BASIN/EASTERN SHASTA COUNTY-NORTHERN SACRAMENTO VALLEY-
CENTRAL SACRAMENTO VALLEY-SOUTHERN SACRAMENTO VALLEY-
CARQUINEZ STRAIT AND DELTA-NORTHERN SAN JOAQUIN VALLEY-
MOUNTAINS SOUTHWESTERN SHASTA TO NORTHERN LAKE COUNTIES-
CLEAR LAKE/SOUTHERN LAKE COUNTY-MOTHERLODE-
EAST FOOTHILLS/NORTH SACRAMENTO VALLEY-
WESTERN PLUMAS COUNTY/LASSEN PARK-WEST SLOPE NORTHERN SIERRA NEVADA-
700 AM PST WED MAR 1 2006

THIS HAZARDOUS WEATHER OUTLOOK IS FOR INTERIOR NORTHERN CALIFORNIA.

.DAY ONE...TODAY

A SERIES OF COLD LOW PRESSURE SYSTEMS ARE FORECAST TO TRACK
TOWARD NORTHERN CALIFORNIA OVER THE NEXT SEVERAL DAYS. THE FIRST
STORM WILL BEGIN SPREADING SNOW OVER THE MOUNTAINS OF INTERIOR
NORTHERN CALIFORNIA BY THIS EVENING...WITH PERIODS OF HEAVY SNOW
OVERNIGHT INTO THURSDAY MORNING.

* WINTER STORM WARNING.......SEE WWUS46 KSTO - WSWSTO FOR DETAILS *

* WINTER WEATHER ADVISORY....SEE WWUS46 KSTO - WSWSTO FOR DETAILS *

.DAYS TWO THROUGH SEVEN... THURSDAY THROUGH TUESDAY

A BREAK IN THE PRECIPITATION IS EXPECTED DURING THE DAY ON
THURSDAY. AT THIS TIME...IT APPEARS ANOTHER POTENTIALLY STRONG
STORM IS POISED TO TAKE AIM ON NORTHERN CALIFORNIA THURSDAY NIGHT
INTO FRIDAY. THIS SYSTEM MAY ALSO GENERATE THUNDERSTORMS IN THE
VALLEY FRIDAY AFTERNOON.

* WINTER STORM WARNING.......SEE WWUS46 KSTO - WSWSTO FOR DETAILS *

* WINTER WEATHER ADVISORY....SEE WWUS46 KSTO - WSWSTO FOR DETAILS *

.SPOTTER INFORMATION STATEMENT...

WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER
CONDITIONS TO THEIR LOCAL NATIONAL WEATHER SERVICE OFFICE.

THE LATEST WEATHER INFORMATION IS AVAILABLE ON THE INTERNET AT
(LOWER CASE): HTTP://WWW.WRH.NOAA.GOV/STO

JJ