Winter Storm Warning 7, NWS Reno, NV

000 
WWUS45 KREV 192200
WSWREV

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE RENO NV
200 PM PST WED DEC 19 2007

...ANOTHER WINTER STORM TO AFFECT THE SIERRA TONIGHT THROUGH
THURSDAY WITH SNOW SPREADING INTO WESTERN NEVADA FOR THE THURSDAY
MORNING COMMUTE...

.THE NEXT PACIFIC STORM WILL MOVE INTO THE WEST COAST THIS
AFTERNOON BRINGING HEAVY SNOW AND GUSTY WINDS TO THE SIERRA ONCE
AGAIN. PERSONS PLANNING TO TRAVEL IN THE SIERRA THIS EVENING
THROUGH THURSDAY SHOULD CONSIDER LEAVING EARLY OR DELAY TRAVEL TO
AVOID HAZARDOUS WINTER DRIVING CONDITIONS. FOR LOWER ELEVATIONS OF
NORTHEAST CALIFORNIA AND WESTERN NEVADA...MOTORISTS ARE LIKELY TO
ENCOUNTER SLICK AND SNOW COVERED ROADS LATE TONIGHT THROUGH THURSDAY
MORNING. 

IF YOU MUST TRAVEL...SLOW DOWN AND ALLOW EXTRA TIME TO REACH YOUR
DESTINATION OR CONSIDER ALTERNATE ROUTES. REMEMBER TO CARRY TIRE
CHAINS...FOOD...WATER...BLANKETS AND A FLASHLIGHT IN YOUR CAR IN
CASE OF AN EMERGENCY.

CHECK OUR WEBSITE AT WEATHER.GOV/RENO FOR UPDATES ON THIS WINTER
STORM.

CAZ071-201300-
/O.CON.KREV.WS.W.0007.071220T0000Z-071221T0000Z/
LASSEN-EASTERN PLUMAS-EASTERN SIERRA COUNTIES-
INCLUDING THE CITIES OF...PORTOLA...SUSANVILLE...WESTWOOD...
SIERRAVILLE
200 PM PST WED DEC 19 2007

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 4 PM PST
THURSDAY...

A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 4 PM PST THURSDAY.

SNOW WILL MOVE INTO THE NORTHERN SIERRA AND BECOME HEAVY THIS
EVENING. SNOW LEVELS AROUND 4500 FEET WILL LOWER TO ALL VALLEY
FLOORS OVERNIGHT. WEST OF HIGHWAY 395...SNOW ACCUMULATIONS OF 10
TO 20 INCHES ARE EXPECTED BY THURSDAY AFTERNOON. EAST OF HIGHWAY
395...WINDY AND MAINLY DRY CONDITIONS WILL PREVAIL THROUGH THE
EVENING HOURS UNTIL A COLD FRONT PASSES EARLY THURSDAY MORNING
WHICH COULD BRING 3 TO 6 INCHES OF SNOW.

SOUTHWEST WINDS OF 20 TO 30 MPH WITH GUSTS TO 55 MPH OVER THE
RIDGES ARE EXPECTED WITH THIS STORM. THIS WILL CREATE AREAS OF
BLOWING AND DRIFTING SNOW OVER MOUNTAIN PASSES AND EXPOSED
LOCATIONS...AS WELL AS STRONG CROSSWINDS ALONG HIGHWAY 395.

CONDITIONS CAN DETERIORATE RAPIDLY DURING WINTER STORMS...SLOW
DOWN AND ALLOW EXTRA TIME WHEN TRAVELING. CARRY TIRE CHAINS...
FOOD...WATER...BLANKETS AND A FLASHLIGHT IN YOUR CAR IN CASE OF AN
EMERGENCY. CHECK OUR WEBSITE AT WEATHER.GOV/RENO OR LISTEN TO NOAA
WEATHER RADIO FOR UPDATES ON THIS SITUATION.

$$

CAZ072-NVZ002-201300-
/O.CON.KREV.WS.W.0007.071220T0400Z-071221T0000Z/
GREATER LAKE TAHOE AREA-
INCLUDING THE CITIES OF...SOUTH LAKE TAHOE...TAHOE CITY...
TRUCKEE...MARKLEEVILLE...GLENBROOK...INCLINE VILLAGE
200 PM PST WED DEC 19 2007

...WINTER STORM WARNING REMAINS IN EFFECT FROM 8 PM THIS EVENING
TO 4 PM PST THURSDAY...

A WINTER STORM WARNING REMAINS IN EFFECT FROM 8 PM THIS EVENING
TO 4 PM PST THURSDAY. 

SNOW WILL MOVE INTO THE LAKE TAHOE AREA THIS EVENING AND BECOME
HEAVY OVERNIGHT. BY THURSDAY AFTERNOON...SNOW ACCUMULATIONS OF 8 TO
14 INCHES ARE EXPECTED WITH 14 TO 28 INCHES ABOVE 7000 FEET.

WIND GUSTS UP TO 45 MPH AT LAKE LEVEL AND RIDGE GUSTS NEAR
100 MPH WILL AFFECT THE AREA OVERNIGHT AND THURSDAY. THIS WILL
CREATE BLIZZARD CONDITIONS AT TIMES OVER MOUNTAIN PASSES AND
EXPOSED LOCATIONS.

CONDITIONS CAN DETERIORATE RAPIDLY DURING WINTER STORMS...SLOW
DOWN AND ALLOW EXTRA TIME WHEN TRAVELING.  CARRY TIRE CHAINS...
FOOD...WATER...BLANKETS AND A FLASHLIGHT IN YOUR CAR IN CASE OF
AN EMERGENCY.  CHECK OUR WEBSITE AT WEATHER.GOV/RENO OR LISTEN TO
NOAA WEATHER RADIO FOR UPDATES ON THIS SITUATION.

$$

CAZ073-201300-
/O.CON.KREV.WS.W.0007.071220T0400Z-071221T0400Z/
MONO-
INCLUDING THE CITIES OF...BRIDGEPORT...COLEVILLE...LEE VINING...
MAMMOTH LAKES
200 PM PST WED DEC 19 2007

...WINTER STORM WARNING REMAINS IN EFFECT FROM 8 PM THIS EVENING
TO 8 PM PST THURSDAY...

A WINTER STORM WARNING REMAINS IN EFFECT FROM 8 PM THIS EVENING
TO 8 PM PST THURSDAY. 

SNOW WILL MOVE INTO THE HIGH SIERRA OF MONO COUNTY THIS EVENING
AND BECOME HEAVY BY EARLY THURSDAY MORNING. WEST OF HIGHWAY
395...SNOW ACCUMULATIONS OF 10 TO 18 INCHES ARE EXPECTED BY
THURSDAY EVENING. EAST OF HIGHWAY 395...WINDY AND MAINLY DRY
CONDITIONS WILL PREVAIL UNTIL A COLD FRONT PASSES LATE THURSDAY
MORNING WHICH COULD BRING 2 TO 6 INCHES OF SNOW.

WIND GUSTS UP TO 50 MPH WITH RIDGE GUSTS NEAR 100 MPH WILL AFFECT
THE AREA OVERNIGHT AND THURSDAY MORNING. THIS WILL CAUSE BLIZZARD
CONDITIONS AT TIMES OVER MOUNTAIN PASSES AND EXPOSED LOCATIONS...
AS WELL AS STRONG CROSSWINDS ALONG HIGHWAY 395.

CONDITIONS CAN DETERIORATE RAPIDLY DURING WINTER STORMS...SLOW
DOWN AND ALLOW EXTRA TIME WHEN TRAVELING.  CARRY TIRE CHAINS...
FOOD...WATER...BLANKETS AND A FLASHLIGHT IN YOUR CAR IN CASE OF
AN EMERGENCY.  CHECK OUR WEBSITE AT WEATHER.GOV/RENO OR LISTEN TO
NOAA WEATHER RADIO FOR UPDATES ON THIS SITUATION.

$$

CAZ070-NVZ005-201300-
/O.NEW.KREV.SN.Y.0023.071220T0400Z-071220T1800Z/
SURPRISE VALLEY CALIFORNIA-NORTHERN WASHOE COUNTY-
INCLUDING THE CITIES OF...CEDARVILLE...EAGLEVILLE...
FORT BIDWELL...EMPIRE...GERLACH
200 PM PST WED DEC 19 2007

...SNOW ADVISORY IN EFFECT FROM 8 PM THIS EVENING TO 10 AM PST
THURSDAY...

THE NATIONAL WEATHER SERVICE IN RENO HAS ISSUED A SNOW ADVISORY...
WHICH IS IN EFFECT FROM 8 PM THIS EVENING TO 10 AM PST THURSDAY. 

SNOW WILL BEGIN IN THE SURPRISE VALLEY THIS EVENING AND SPREAD
SOUTH ACROSS NORTHERN AND CENTRAL WASHOE COUNTY OVERNIGHT...AND
CONTINUE THROUGH THURSDAY MORNING. A BRIEF PERIOD OF MODERATE TO
HEAVY SNOW IS EXPECTED DURING THE EARLY AND MID MORNING HOURS. TOTAL
SNOW ACCUMULATIONS OF 2 TO 5 INCHES ARE EXPECTED ABOVE 4500 FEET
IN AREAS NORTH OF GERLACH...WITH 1 TO 3 INCHES BELOW 4500 FEET
FROM GERLACH SOUTHWARD.

SNOW IS EXPECTED TO POSE AN INCONVENIENCE TO TRAVELERS. ROADS
WILL BECOME SLICK AND HAZARDOUS...WITH SNOW AND ICE FIRST
DEVELOPING ON BRIDGES AND OVERPASSES. MOTORISTS SHOULD SLOW DOWN
AND USE CAUTION.  CHECK OUR WEBSITE AT WEATHER.GOV/RENO OR LISTEN
TO NOAA WEATHER RADIO FOR UPDATES ON THIS SITUATION.

$$

NVZ003-201300-
/O.NEW.KREV.SN.Y.0023.071220T1200Z-071220T1800Z/
GREATER RENO-CARSON CITY-MINDEN AREA-
INCLUDING THE CITIES OF...SPARKS...VERDI...GARDNERVILLE
200 PM PST WED DEC 19 2007

...SNOW ADVISORY IN EFFECT FROM 4 AM TO 10 AM PST THURSDAY...

THE NATIONAL WEATHER SERVICE IN RENO HAS ISSUED A SNOW ADVISORY...
WHICH IS IN EFFECT FROM 4 AM TO 10 AM PST THURSDAY. 

SNOW WILL BEGIN BY EARLY THURSDAY MORNING AND CONTINUE THROUGH
LATE MORNING. A BRIEF PERIOD OF MODERATE TO HEAVY SNOW IS
EXPECTED JUST BEFORE OR DURING THE PEAK OF THE MORNING COMMUTE.
TOTAL SNOW ACCUMULATIONS OF 2 TO 5 INCHES ARE EXPECTED IN THE
FOOTHILLS AROUND RENO AND CARSON CITY ABOVE 5000 FEET...WITH UP TO
2 INCHES DOWN TO THE VALLEY FLOOR.

SNOW IS EXPECTED TO POSE AN INCONVENIENCE TO TRAVELERS. ROADS
WILL BECOME SLICK AND HAZARDOUS...WITH SNOW AND ICE FIRST
DEVELOPING ON BRIDGES AND OVERPASSES. MOTORISTS SHOULD SLOW DOWN
AND USE CAUTION.  CHECK OUR WEBSITE AT WEATHER.GOV/RENO OR LISTEN
TO NOAA WEATHER RADIO FOR UPDATES ON THIS SITUATION.

$$
MJD

HTTP://WEATHER.GOV/RENO

000 
WWUS45 KREV 201235
WSWREV

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE RENO NV
435 AM PST THU DEC 20 2007
 
...A WINTER STORM WILL CONTINUE TO AFFECT THE SIERRA AND PARTS OF
WESTERN NEVADA TODAY...

.A WINTER STORM WILL CONTINUE TO BRING HEAVY SNOW AND GUSTY WINDS
TO THE SIERRA AND PARTS OF WESTERN NEVADA WITH THE WORST
CONDITIONS EXPECTED THIS MORNING. PERSONS PLANNING TRAVEL IN
THE SIERRA SHOULD CONSIDER DELAYING TRAVEL UNTIL THIS AFTERNOON TO
AVOID DANGEROUS WINTER DRIVING CONDITIONS. FOR LOWER ELEVATIONS OF
NORTHEAST CALIFORNIA AND WESTERN NEVADA...MOTORISTS MAY ENCOUNTER
SLICK AND SNOW COVERED ROADS.

IF YOU MUST TRAVEL...SLOW DOWN AND ALLOW EXTRA TIME TO REACH YOUR
DESTINATION OR CONSIDER ALTERNATE ROUTES. REMEMBER TO CARRY TIRE
CHAINS...FOOD...WATER...BLANKETS AND A FLASHLIGHT IN YOUR CAR IN
CASE OF AN EMERGENCY.

CHECK OUR WEBSITE AT WEATHER.GOV/RENO FOR UPDATES ON THIS WINTER
STORM.

CAZ071-202045-
/O.CON.KREV.WS.W.0007.000000T0000Z-071221T0000Z/
LASSEN-EASTERN PLUMAS-EASTERN SIERRA COUNTIES-
INCLUDING THE CITIES OF...PORTOLA...SUSANVILLE...WESTWOOD...
SIERRAVILLE
435 AM PST THU DEC 20 2007

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 4 PM PST THIS
AFTERNOON...

A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 4 PM PST THIS
AFTERNOON. 

SNOW WILL CONTINUE TO BE LOCALLY HEAVY THIS MORNING...ESPECIALLY
TO THE WEST OF HIGHWAY 395. TOTAL SNOWFALL ACCUMULATIONS OF 10
TO 20 INCHES ARE EXPECTED WEST OF HIGHWAY 395. ALONG AND EAST OF
HIGHWAY 395...TOTAL ACCUMULATIONS OF 2 TO 4 INCHES ARE POSSIBLE.

GUSTY SOUTHWEST WINDS WILL CREATE PERIODS OF BLOWING AND DRIFTING
SNOW ESPECIALLY ON AREA PASSES. GUSTY CROSS WINDS WILL ALSO MAKE
TRAVEL DIFFICULT ALONG HIGHWAY 395.

CONDITIONS CAN DETERIORATE RAPIDLY DURING WINTER STORMS...SLOW
DOWN AND ALLOW EXTRA TIME WHEN TRAVELING. CARRY TIRE CHAINS...
FOOD...WATER...BLANKETS AND A FLASHLIGHT IN YOUR CAR IN CASE OF
AN EMERGENCY.

$$

CAZ072-NVZ002-202045-
/O.CON.KREV.WS.W.0007.000000T0000Z-071221T0000Z/
GREATER LAKE TAHOE AREA-
INCLUDING THE CITIES OF...SOUTH LAKE TAHOE...TAHOE CITY...
TRUCKEE...MARKLEEVILLE...GLENBROOK...INCLINE VILLAGE
435 AM PST THU DEC 20 2007

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 4 PM PST THIS
AFTERNOON...

A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 4 PM PST THIS
AFTERNOON. 

SNOW WILL CONTINUE TO BE LOCALLY HEAVY THIS MORNING. BY LATE THIS
AFTERNOON...TOTAL SNOW ACCUMULATIONS OF 8 TO 14 INCHES ARE
EXPECTED AT LAKE LEVEL...WITH 14 TO 28 INCHES ABOVE 7000 FEET.

WIND GUSTS UP TO 35 MPH AT LAKE LEVEL WILL RESULT IN WHITE OUT
CONDITIONS AT TIMES WITH CONSIDERABLE DRIFTING OF SNOW. BLIZZARD
CONDITIONS CAN BE EXPECTED OVER AREA PASSES WHERE GUSTS MAY
APPROACH OR EXCEED 60 MPH. 

CONDITIONS ON AREA PASSES WILL REMAIN AT DANGEROUS LEVELS THIS
MORNING AND TRAVEL IS STRONGLY DISCOURAGED UNTIL LATER THIS
AFTERNOON.

$$

CAZ073-202045-
/O.CON.KREV.WS.W.0007.000000T0000Z-071221T0400Z/
MONO-
INCLUDING THE CITIES OF...BRIDGEPORT...COLEVILLE...LEE VINING...
MAMMOTH LAKES
435 AM PST THU DEC 20 2007

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 8 PM PST THIS
EVENING...

A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 8 PM PST THIS
EVENING. 

SNOW HAS MOVED INTO THE HIGH SIERRA OF MONO COUNTY AND WILL
CONTINUE TO BE HEAVY THROUGH EARLY AFTERNOON. WEST OF HIGHWAY
395...TOTAL SNOW ACCUMULATIONS OF 1 TO 2 FEET ARE EXPECTED BY
THIS EVENING. ALONG AND EAST OF HIGHWAY 395...4 TO 8 INCHES OF
SNOWFALL ARE EXPECTED WITH LOCAL AMOUNTS NEAR ONE FOOT AT THE
HIGHER PASSES.

WIND GUSTS UP TO 50 MPH WITH RIDGE GUSTS NEAR 100 MPH WILL CONTINUE
TO AFFECT THE AREA THIS MORNING. THIS WILL CAUSE BLIZZARD CONDITIONS
AT TIMES OVER MOUNTAIN PASSES AND EXPOSED LOCATIONS... AS WELL AS
STRONG CROSSWINDS ALONG HIGHWAY 395.

TRAVEL OVER AREA PASSES WILL BE HAZARDOUS TODAY AND TRAVEL IS
DISCOURAGED. IF YOU MUST TRAVEL...CARRY TIRE CHAINS...FOOD
...WATER...BLANKETS AND A FLASHLIGHT IN YOUR CAR IN CASE OF AN
EMERGENCY. PREPARE FOR LONG DELAYS.

$$

CAZ070-NVZ005-201800-
/O.CON.KREV.SN.Y.0023.000000T0000Z-071220T1800Z/
SURPRISE VALLEY CALIFORNIA-NORTHERN WASHOE COUNTY-
INCLUDING THE CITIES OF...CEDARVILLE...EAGLEVILLE...
FORT BIDWELL...EMPIRE...GERLACH
435 AM PST THU DEC 20 2007

...SNOW ADVISORY REMAINS IN EFFECT UNTIL 10 AM PST THIS MORNING...

A SNOW ADVISORY REMAINS IN EFFECT UNTIL 10 AM PST THIS MORNING. 

SNOW WILL CONTINUE IN THE SURPRISE VALLEY AND ACROSS NORTHERN AND
CENTRAL WASHOE COUNTY THIS MORNING. A BRIEF PERIOD OF MODERATE TO
HEAVY SNOW IS EXPECTED DURING THE EARLY AND MID MORNING HOURS.
TOTAL SNOW ACCUMULATIONS OF 2 TO 5 INCHES ARE EXPECTED ABOVE 4500
FEET IN AREAS NORTH OF GERLACH...WITH 1 TO 3 INCHES BELOW 4500
FEET FROM GERLACH SOUTHWARD.

SNOW IS EXPECTED TO POSE AN INCONVENIENCE TO TRAVELERS. ROADS
WILL BE SLICK AND HAZARDOUS...WITH SNOW AND ICE FIRST DEVELOPING
ON BRIDGES AND OVERPASSES. MOTORISTS SHOULD SLOW DOWN AND USE
CAUTION. 

$$

NVZ003-201800-
/O.CON.KREV.SN.Y.0023.000000T0000Z-071220T1800Z/
GREATER RENO-CARSON CITY-MINDEN AREA-
INCLUDING THE CITIES OF...SPARKS...VERDI...GARDNERVILLE
435 AM PST THU DEC 20 2007

...SNOW ADVISORY REMAINS IN EFFECT UNTIL 10 AM PST THIS MORNING...

A SNOW ADVISORY REMAINS IN EFFECT UNTIL 10 AM PST THIS MORNING. 

SNOW WILL CONTINUE THIS MORNING WITH MOST OF THE ACCUMULATIONS
OCCURING IN THE FOOTHILLS ABOVE 5000 FEET. TOTAL ACCUMULATIONS OF
2 TO 5 INCHES ARE EXPECTED IN THESE HIGHER AREAS. AS A COLD FRONT
MOVES THROUGH WESTERN NEVADA DURING THE MORNING COMMUTE...A BRIEF
PERIOD OF MODERATE TO HEAVY SNOW MAY RESULT IN A QUICK
ACCUMULATION OF 1 TO 2 INCHES ON ROADWAYS OF THE VALLEY FLOORS
BELOW 5000 FEET. SLUSHY ROAD CONDITIONS MAY DEVELOP AND CAUSE
HAZARDOUS DRIVING CONDITIONS.

SNOW IS EXPECTED TO POSE AN INCONVENIENCE TO TRAVELERS. ROADS
WILL BECOME SLICK AND HAZARDOUS...WITH SNOW AND ICE FIRST
DEVELOPING ON BRIDGES AND OVERPASSES. MOTORISTS SHOULD SLOW DOWN
AND USE CAUTION.

$$


HTTP://WEATHER.GOV/RENO

OHARA/HOHMANN

000 
WWUS45 KREV 201758
WSWREV

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE RENO NV
958 AM PST THU DEC 20 2007

...A WINTER STORM WILL CONTINUE TO AFFECT THE CENTRAL SIERRA THIS 
AFTERNOON...

.A WINTER STORM WILL CONTINUE TO BRING HEAVY SNOW AND GUSTY WINDS
TO THE EAST CENTRAL SIERRA INTO THIS AFTERNOON. PERSONS PLANNING
TRAVEL IN THE SIERRA SHOULD CONSIDER DELAYING TRAVEL UNTIL THIS
AFTERNOON TO AVOID DANGEROUS WINTER DRIVING CONDITIONS. 

IF YOU MUST TRAVEL...SLOW DOWN AND ALLOW EXTRA TIME TO REACH YOUR
DESTINATION OR CONSIDER ALTERNATE ROUTES. REMEMBER TO CARRY TIRE
CHAINS...FOOD...WATER...BLANKETS AND A FLASHLIGHT IN YOUR CAR IN
CASE OF AN EMERGENCY.

CHECK OUR WEBSITE AT WEATHER.GOV/RENO FOR UPDATES ON THIS WINTER
STORM.

CAZ071-072-NVZ002-201900-
/O.CAN.KREV.WS.W.0007.000000T0000Z-071221T0000Z/
LASSEN-EASTERN PLUMAS-EASTERN SIERRA COUNTIES-
GREATER LAKE TAHOE AREA-
INCLUDING THE CITIES OF...PORTOLA...SUSANVILLE...WESTWOOD...
SIERRAVILLE...SOUTH LAKE TAHOE...TAHOE CITY...TRUCKEE...
MARKLEEVILLE...GLENBROOK...INCLINE VILLAGE
958 AM PST THU DEC 20 2007

...WINTER STORM WARNING IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN RENO HAS CANCELLED THE WINTER
STORM WARNING. 

THE HEAVIEST SNOW IS NOW MOVING SOUTH OF LAKE TAHOE. HEAVY SNOW
WILL END IN ALL AREAS BY 1030 AM WITH MAINLY SCATTERED SNOW
SHOWERS THE REST OF THE DAY. ANY ADDITIONAL SNOW ACCUMULATION
WILL BE LOCALIZED WITH AMOUNTS OF 2 INCHES OR LESS. THEREFORE THE
WINTER STORM WARNING IS CANCELED.

$$

CAZ070-NVZ003-005-201900-
/O.EXP.KREV.SN.Y.0023.000000T0000Z-071220T1800Z/
SURPRISE VALLEY CALIFORNIA-GREATER RENO-CARSON CITY-MINDEN AREA-
NORTHERN WASHOE COUNTY-
INCLUDING THE CITIES OF...CEDARVILLE...EAGLEVILLE...
FORT BIDWELL...SPARKS...VERDI...GARDNERVILLE...EMPIRE...GERLACH
958 AM PST THU DEC 20 2007

...SNOW ADVISORY WILL EXPIRE AT 10 AM PST THIS MORNING...

THE SNOW ADVISORY WILL EXPIRE AT 10 AM PST THIS MORNING. 

HEAVY SNOW HAS CLEARED WASHOE COUNTY AND THE SURPRISE VALLEY. THE
SNOW WILL MOVE SOUTH OF CARSON CITY AND MINDEN BY 1030 AM. ONLY
LIGHT ACCUMULATIONS OF UP TO 1 INCH ARE EXPECTED WITH SCATTERED
SHOWERS THE REMAINDER OF THE DAY. THEREFORE THE SNOW ADVISORY WILL
EXPIRE AT 10 AM.

$$

CAZ073-210000-
/O.CON.KREV.WS.W.0007.000000T0000Z-071221T0400Z/
MONO-
INCLUDING THE CITIES OF...BRIDGEPORT...COLEVILLE...LEE VINING...
MAMMOTH LAKES
958 AM PST THU DEC 20 2007

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 8 PM PST THIS
EVENING...

A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 8 PM PST THIS
EVENING. 

SNOW HAS MOVED INTO THE HIGH SIERRA OF MONO COUNTY AND WILL
CONTINUE TO BE HEAVY THROUGH EARLY AFTERNOON. WEST OF HIGHWAY
395...TOTAL SNOW ACCUMULATIONS OF 1 TO 2 FEET ARE EXPECTED BY
THIS EVENING. ALONG AND EAST OF HIGHWAY 395...4 TO 8 INCHES OF
SNOWFALL ARE EXPECTED WITH LOCAL AMOUNTS NEAR ONE FOOT AT THE
HIGHER PASSES.

WIND GUSTS UP TO 40 MPH WITH RIDGE GUSTS NEAR 80 MPH WILL CONTINUE
TO AFFECT THE AREA INTO THE AFTERNOON. THIS WILL CAUSE BLIZZARD
CONDITIONS AT TIMES OVER MOUNTAIN PASSES AND EXPOSED LOCATIONS...
AS WELL AS STRONG CROSSWINDS ALONG HIGHWAY 395.

TRAVEL OVER AREA PASSES WILL BE HAZARDOUS TODAY AND TRAVEL IS
DISCOURAGED. IF YOU MUST TRAVEL...CARRY TIRE CHAINS...FOOD ...
WATER...BLANKETS AND A FLASHLIGHT IN YOUR CAR IN CASE OF AN
EMERGENCY. PREPARE FOR LONG DELAYS.

$$


HTTP://WEATHER.GOV/RENO

000 
WWUS45 KREV 202304
WSWREV

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE RENO NV
304 PM PST THU DEC 20 2007


CAZ073-210015-
/O.CAN.KREV.WS.W.0007.000000T0000Z-071221T0400Z/
MONO-
INCLUDING THE CITIES OF...BRIDGEPORT...COLEVILLE...LEE VINING...
MAMMOTH LAKES
304 PM PST THU DEC 20 2007

...WINTER STORM WARNING IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN RENO HAS CANCELLED THE WINTER
STORM WARNING. 

THE HEAVIEST SNOW IS NOW MOVING SOUTH OF MONO COUNTY. SCATTERED
SNOW SHOWERS WILL CONTINUE THROUGH THE EVENING HOURS. ANY
ADDITIONAL ACCUMULATIONS WILL BE LOCALIZED WITH AMOUNTS 2 INCHES
OR LESS. THEREFORE THE WINTER STORM WARNING IS CANCELED.

$$


HTTP://WEATHER.GOV/RENO

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE RENO NV
400 AM PST WED DEC 19 2007

.SHORT TERM...
THE REGION IS CURRENTLY IN A LULL BETWEEN TWO STORM SYSTEMS WITH ONE
EXITING OVER SRN NV AND THE NEXT DEVELOPING OVER THE ERN PACIFIC
AROUND 150W. THERE IS ALSO A WEAK SHORTWAVE CURRENTLY MOVING INTO
THE PACNW WHICH SHOWS UP WELL ON SATELLITE IMAGERY. THIS SHORTWAVE
HAS STRONG WAA SOUTH OF IT WHICH IS SPREADING A GOOD SLUG OF
MOISTURE OVER NRN CA/NV THIS MORNING. THE BEST UPPER FORCING STAYS
WELL NORTH OF THE CWA SO LITTLE IN THE WAY OF PRECIP IS EXPECTED...
HOWEVER PERIODS OF LIGHT SNOW WILL OCCUR ALL DAY OVER FAR NRN LASSEN
COUNTY AND IN THE SURPRISE VALLEY.

THE BIGGER STORY IS THE NEXT PACIFIC SYSTEM WHICH IS ON TRACK TO
MOVE INTO THE REGION THIS AFT/EVE. OVERRUNNING PRECIP STARTS TO
INCREASE OVER THE NRN SIERRA THIS AFTERNOON AND SPREADS SOUTH TO
AROUND THE I80 CORRIDOR JUST AFTER SUNSET. THE ORIENTATION OF THE
UPPER JET AND THE WAY THIS SYSTEM COMES ONSHORE ARE NOT CONDUCIVE TO
SPLITTING OR SHEARING THIS SYSTEM APART...SO CONFIDENCE IS HIGH ON
THIS STORM. ONE THING THAT IS A LITTLE UNCERTAIN IS THE MOISTURE
AVAILABLE TO THE STORM. TPW VALUES ARE SLIGHTLY HIGHER THAN THE
PREVIOUS STORM...HOWEVER THE MOISTURE TAP GETS CUT OFF RATHER
QUICKLY AND THERE IS SOME UNCERTAINTY ON THE AMOUNT OF POST-FRONTAL
PRECIP. THE COLD AIR PORTION OF THIS STORM IS MUCH COLDER THAN THE
LAST SO SNOW RATIOS WILL BE QUITE HIGH WHICH WILL ADD UP TO HIGHER
SNOW AMOUNTS. TOTAL QPF FOR THIS SYSTEM IS EXPECTED TO BE AROUND 1.5
INCHES ALONG THE SIERRA CREST FROM TAHOE NORTH WITH AROUND AN INCH
TO THE SOUTH. WITH THE HIGH SNOW RATIOS THIS SHOULD ADD UP TO OVER 2
FEET ALONG THE CREST QUICKLY TAPERING OFF TO THE EAST. WINDS WILL BE
VERY STRONG DURING THIS STORM AS H7 SPEEDS REACH 65 KTS COUPLED WITH
GOOD UPPER SUPPORT FROM THE JET MAX ALOFT. COULD EASILY SEE GUSTS TO
100 MPH OVER THE SIERRA RIDGES WITH THE STRONGEST WINDS OCCURRING
THURSDAY MORNING AS THE FRONT PASSES. WILL UPGRADE THE WINTER STORM
WATCHES TO WINTER STORM WARNINGS FOR THE SIERRA ZONES.

FOR AREAS IN THE LEE OF THE SIERRA...AN INVERSION FORMS AROUND RIDGE
LEVEL AS THE INITIAL BAND OF PRECIP BANKS UP AGAINST THE WRN SLOPES
OF THE SIERRA WHICH WILL ONCE AGAIN DEVELOP THE RAIN SHADOW. THIS
CRITICAL LEVEL WILL HELP TO DUCT THE HIGH WINDS ALOFT DOWN TO THE
SURFACE. LOCAL WIND ALGORITHM SHOWS HIGH WIND CRITERIA BEING MET
WITH MODELS INDICATING SPEEDS AROUND 30 KTS WITH GUSTS TO 55 KTS.
WILL ISSUE A HIGH WIND WATCH TO COVER THIS THREAT AND LET THE DAY
SHIFT LOOK AT 12Z MODEL RUNS TO MAKE FINAL DECISION. A STRONG COLD
FRONT MOVES INTO THE NRN ZONES EARLY THURSDAY MORNING AND INTO THE
RENO AREA SOON AFTER SUNRISE. THE STRONGEST WINDS WILL OCCUR AROUND
THIS TIME AND RAPIDLY DECREASE BEHIND IT. THIS WILL ALSO BE WHEN
SPILLOVER INTO THE LEE OF THE SIERRA OCCURS WITH SNOW LEVELS QUICKLY
DROPPING TO ALL VALLEY FLOORS. AS MENTIONED PREVIOUSLY...ITS STILL
TOUGH TO SAY HOW MUCH POST-FRONTAL SNOWFALL OCCURS. MAY NEED TO
ISSUE A SNOW ADVISORY FOR SOME WRN NEVADA ZONES AS THIS BECOMES MORE
CLEAR.

THE STORM EXITS TO THE EAST THURSDAY NIGHT WITH HIGH PRESSURE
BUILDING IN BRINGING RAPIDLY CLEARING BLUEBIRD SKIES BY FRIDAY
MORNING. SURFACE HIGH PRESSURE STRENGTHENS OVER THE GREAT BASIN
CAUSING NELY POST-FRONTAL WINDS TO BE GUSTY AT TIMES OVER THE
HIGHEST SIERRA RIDGES. AT THIS TIME IT APPEARS GUSTS SHOULD REMAIN
BELOW 50 MPH AND GUSTY WINDS ON LAKE TAHOE ARE NOT ANTICIPATED.
FRIDAY NIGHT WILL BE QUITE CHILLY WITH CLEAR SKIES...A FRESH LAYER
OF SNOW...AND A COLD POST-FRONTAL AIRMASS. JORDAN

.LONG TERM...SATURDAY THROUGH CHRISTMAS DAY...
SHORTWAVE RIDGE STILL PROGGED TO BE SHIFTING EAST OF AREA SATURDAY
AS UPSTREAM SHORTWAVE MOVES INTO THE PACNW IN FAST PROGRESSIVE FLOW.
THERE IS QUITE A BIT OF UNCERTAINTY IN DETAIL DURING THE PERIOD
GIVEN THE PROGRESSIVE NATURE OF SYSTEMS ENTERING THE PACNW. THERE
SEEMS TO BE A GENERAL SIGNAL AMONG DETERMINISTIC AND ENSEMBLE RUNS
THAT A WEAK SHORTWAVE WILL BRUSH THE AREA SATURDAY NIGHT FOLLOWED BY
ONE SLIGHTLY STRONGER AND FURTHER SOUTH SOMETIME EARLY NEXT WEEK.
NEITHER SYSTEM APPEARS TO HAVE MUCH PUNCH AND WOULD ONLY PRODUCE
LIGHT QPF BASED ON CURRENT PROJECTIONS. THE MAIN EMPHASIS WILL BE ON
A CONTINUATION OF VARIABLE CLOUDY CONDITIONS AND SOME CHANCE OF
PRECIPITATION WITH THE BEST OPPORTUNITY BEING NORTHEAST CALIFORNIA.
TEMPERATURES WILL BEGIN TO WARM AT THE MOUNTAIN TOPS SATURDAY
ALTHOUGH VALLEYS WILL CONTINUE TO BE QUITE COLD AT NIGHT. READINGS
EARLY NEXT WEEK WILL RETURN TO NEAR NORMAL MOST AREAS WITH UPPER 30S
AND 40S MOST VALLEY LOCATIONS. HOHMANN
&&

.AVIATION...
SKIES CLEARED OVERNIGHT AND ALLOWED TEMPERATURES TO FALL CLOSE TO
DEWPOINTS IN THE SIERRA VALLEYS. WHILE RIDGE LINE WINDS CONTINUE TO
PRODUCE SOME MIXING...THE INVERSIONS MAY BE SUFFICIENT TO PRODUCE
PATCHY GROUND FOG AROUND DAYBREAK AND FOR SEVERAL HOURS AFTERWARDS
AT KTRK/KTVL. ANY FOG WILL BE SHALLOW AND BURN OFF BY 16Z. NEXT
STORM TO BRING AN INCREASE IN WIND THIS EVENING INTO THURSDAY
MORNING. WIDESPREAD WIND GUSTS WILL AFFECT THE KTVL/KTRK TAF SITES
FOR SEVERAL HOURS THIS EVENING (22Z-04Z) PRIOR TO HEAVY SNOW AND
LIFR CONDITIONS RESUMING AND CONTINUING OVERNIGHT. AT KRNO...WINDS
WILL GUST 35-40KT WITH LOCAL GUSTS TO 50-55KT IN THE VCNTY OF THE
AIRPORT...MAINLY AFTER 04Z AND CONTINUING INTO THURSDAY MORNING.
HOHMANN
&&

.REV WATCHES/WARNINGS/ADVISORIES...
NV...HIGH WIND WATCH FROM THIS EVENING THROUGH THURSDAY MORNING FOR
     NVZ003-005.

     LAKE WIND ADVISORY FROM NOON TODAY TO 8 PM PST THIS EVENING FOR
     NVZ002.

     WINTER STORM WARNING FROM 8 PM THIS EVENING TO 4 PM PST THURSDAY
     FOR NVZ002.

CA...WINTER STORM WARNING FROM 4 PM THIS AFTERNOON TO 4 PM PST
     THURSDAY FOR CAZ071.

     HIGH WIND WATCH FROM THIS EVENING THROUGH THURSDAY MORNING FOR
     CAZ070.

     WINTER STORM WARNING FROM 8 PM THIS EVENING TO 8 PM PST THURSDAY
     FOR CAZ073.

     LAKE WIND ADVISORY FROM NOON TODAY TO 8 PM PST THIS EVENING FOR
     CAZ072.

     WINTER STORM WARNING FROM 8 PM THIS EVENING TO 4 PM PST THURSDAY
     FOR CAZ072.

&&

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