Snow Advisory 3, NWS Reno, NV

000 
WWUS45 KREV 070003 CCA
WSWREV

URGENT - WINTER WEATHER MESSAGE...CORRECTED
NATIONAL WEATHER SERVICE RENO NV
401 PM PST TUE FEB 6 2007

...SNOWFALL EXPECTED FOR LAKE TAHOE MIDDAY WEDNESDAY THROUGH
WEDNESDAY NIGHT...

.THIS WILL BE THE FIRST OF OF A SERIES OF SUBTROPICAL STORMS TO
AFFECT THE REGION THROUGH THE WEEKEND. SNOW LEVELS WILL START OUT
INITIALLY ABOVE 6500 FEET AND CONTINUE TO FALL THROUGH DAY.

CAZ072-NVZ002-071200-
/O.NEW.KREV.SN.Y.0003.070207T1800Z-070208T0600Z/ 
GREATER LAKE TAHOE AREA- 
INCLUDING THE CITIES OF...SOUTH LAKE TAHOE...TAHOE CITY...
TRUCKEE...MARKLEEVILLE...GLENBROOK...INCLINE VILLAGE 
401 PM PST TUE FEB 6 2007

...SNOW ADVISORY IN EFFECT ABOVE 6500 FEET FROM 10 AM TO 10 PM PST
WEDNESDAY...

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

SNOW WILL RETURN TO THE TAHOE AREA WEDNESDAY. SNOW LEVELS WILL
START OUT AT 6500 FEET OR ABOVE DURING THE DAY...DROPPING TO LAKE
LEVEL BY THE EVENING. 4 TO 8 INCHES OF SNOW ARE EXPECTED ABOVE
6500 FEET IN THE LAKE TAHOE AREA...WITH 2 TO 4 INCHES OF WET SNOW
AT LAKE LEVEL.

A SNOW ADVISORY MEANS THAT PERIODS OF SNOW WILL CAUSE PRIMARILY
TRAVEL DIFFICULTIES. IF YOU ARE PLANNING TRAVEL ACROSS THE SIERRA
ON WEDNESDAY...BE PREPARED FOR SNOW COVERED ROADS...LIMITED
VISIBILITIES. CHECK LOCAL ROAD CONDITIONS BEFORE DEPARTING.


 
$$


HTTP://WEATHER.GOV/RENO

000 
WWUS45 KREV 071701
WSWREV

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE RENO NV
900 AM PST WED FEB 7 2007

CAZ072-NVZ002-080000-
/O.EXT.KREV.SN.Y.0003.070207T2100Z-070208T1200Z/
GREATER LAKE TAHOE AREA-
INCLUDING THE CITIES OF...SOUTH LAKE TAHOE...TAHOE CITY...
TRUCKEE...MARKLEEVILLE...GLENBROOK...INCLINE VILLAGE
900 AM PST WED FEB 7 2007

...SNOW ADVISORY NOW IN EFFECT FROM 1 PM THIS AFTERNOON TO 4 AM
PST THURSDAY...

THE SNOW ADVISORY IS NOW IN EFFECT FROM 1 PM THIS AFTERNOON TO
4 AM PST THURSDAY. 

RAIN AND SNOW WILL RETURN TO THE LAKE TAHOE AREA BY LATE MORNING.
SNOW LEVELS WILL START OUT BRIEFLY AT LAKE LEVEL LATE THIS
MORNING RISING TO BETWEEN 6500 AND 7000 FEET THIS AFTERNOON.
COOLER AIR WILL LOWER THE SNOW LEVELS BACK DOWN TO LAKE LEVEL 
AFTER 6 PM THIS EVENING. TOTAL SNOW ACCUMULATIONS OF 6 TO 10 INCHES
ARE EXPECTED ABOVE 7000 FEET EARLY THURSDAY MORNING. UP TO 4 INCHES
OF  SNOW ARE ALSO EXPECTED DOWN TO LAKE LEVEL AFTER 6 PM PST THIS
EVENING. THE HEAVIEST SNOWFALL RATES ARE FORECAST WITH THE COLD
FRONT BETWEEN 6 TO 10 PM THIS EVENING.

A SNOW ADVISORY MEANS THAT PERIODS OF SNOW WILL CAUSE PRIMARILY
TRAVEL DIFFICULTIES. IF YOU ARE PLANNING TRAVEL ACROSS THE SIERRA
THROUGH TONIGHT BE PREPARED FOR SNOW COVERED ROADS AND LIMITED
VISIBILITIES. CHECK LOCAL ROAD CONDITIONS BEFORE DEPARTING.

$$
TC

HTTP://WEATHER.GOV/RENO

000 
WWUS45 KREV 071710 CCA
WSWREV

URGENT - WINTER WEATHER MESSAGE...CORRECTED
NATIONAL WEATHER SERVICE RENO NV
909 AM PST WED FEB 7 2007

CAZ072-NVZ002-080015-
/O.COR.KREV.SN.Y.0003.070207T2100Z-070208T1200Z/
GREATER LAKE TAHOE AREA-
INCLUDING THE CITIES OF...SOUTH LAKE TAHOE...TAHOE CITY...
TRUCKEE...MARKLEEVILLE...GLENBROOK...INCLINE VILLAGE
909 AM PST WED FEB 7 2007

...SNOW ADVISORY NOW IN EFFECT FROM 1 PM THIS AFTERNOON TO 4 AM
PST THURSDAY ABOVE 6500 FEET...

THE SNOW ADVISORY IS NOW IN EFFECT FROM 1 PM THIS AFTERNOON TO
4 AM PST THURSDAY ABOVE 6500 FEET. 

RAIN AND SNOW WILL RETURN TO THE LAKE TAHOE AREA BY LATE MORNING.
SNOW LEVELS WILL START OUT BRIEFLY AT LAKE LEVEL LATE THIS
MORNING RISING TO BETWEEN 6500 AND 7000 FEET THIS AFTERNOON.
COOLER AIR WILL LOWER THE SNOW LEVELS BACK DOWN TO LAKE LEVEL 
AFTER 6 PM THIS EVENING. TOTAL SNOW ACCUMULATIONS OF 6 TO 10 INCHES
ARE EXPECTED ABOVE 7000 FEET EARLY THURSDAY MORNING. UP TO 4 INCHES
OF  SNOW ARE ALSO EXPECTED DOWN TO LAKE LEVEL AFTER 6 PM PST THIS
EVENING. THE HEAVIEST SNOWFALL RATES ARE FORECAST WITH THE COLD
FRONT BETWEEN 6 TO 10 PM THIS EVENING.

A SNOW ADVISORY MEANS THAT PERIODS OF SNOW WILL CAUSE PRIMARILY
TRAVEL DIFFICULTIES. IF YOU ARE PLANNING TRAVEL ACROSS THE SIERRA
THROUGH TONIGHT BE PREPARED FOR SNOW COVERED ROADS AND LIMITED
VISIBILITIES. CHECK LOCAL ROAD CONDITIONS BEFORE DEPARTING.

$$
TC

HTTP://WEATHER.GOV/RENO

000 
WWUS45 KREV 072353
WSWREV

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE RENO NV
353 PM PST WED FEB 7 2007

CAZ072-NVZ002-080800-
/O.NEW.KREV.WS.A.0002.070209T0000Z-070210T0000Z/
/O.CON.KREV.SN.Y.0003.000000T0000Z-070208T1200Z/
GREATER LAKE TAHOE AREA-
INCLUDING THE CITIES OF...SOUTH LAKE TAHOE...TAHOE CITY...
TRUCKEE...MARKLEEVILLE...GLENBROOK...INCLINE VILLAGE
353 PM PST WED FEB 7 2007

...SNOW ADVISORY REMAINS IN EFFECT UNTIL 4 AM PST THURSDAY ABOVE 6500  
FEET...
...WINTER STORM WATCH IN EFFECT FROM THURSDAY AFTERNOON THROUGH
FRIDAY AFTERNOON...

THE NATIONAL WEATHER SERVICE IN RENO HAS ISSUED A WINTER STORM
WATCH...WHICH IS IN EFFECT FROM THURSDAY AFTERNOON THROUGH FRIDAY
AFTERNOON. A SNOW ADVISORY REMAINS IN EFFECT UNTIL 4 AM PST
THURSDAY. 

SNOW AND RAIN WILL CONTINUE THROUGH TONIGHT. TOTAL SNOW ACCUMULATIONS
OF 6 TO 10 INCHES ARE EXPECTED ABOVE 6500 FEET BY LATE TONIGHT. AT
LAKE LEVEL...A MIX OF RAIN AND SNOW IS EXPECTED TO CHANGE TO SNOW 
BY EARLY EVENING WITH SNOW ACCUMULATION UP TO 4 INCHES. THE HEAVIEST
SNOWFALL RATES ARE EXPECTED BETWEEN 6 AND 10 PM THIS EVENING. IF
YOU ARE PLANNING TRAVEL ACROSS THE SIERRA THROUGH TONIGHT BE PREPARED
FOR SNOW COVERED ROADS AND LIMITED VISIBILITIES. CHECK LOCAL ROAD
CONDITIONS BEFORE DEPARTING.

A STRONGER STORM IS EXPECTED TO MOVE INTO THE SIERRA BY THURSDAY  
AFTERNOON. THIS STORM MAY PRODUCE HEAVY SNOW FROM THURSDAY
EVENING THROUGH FRIDAY WITH ADDITIONAL ACCUMULATION UP TO 2 FEET
ABOVE 7000 FEET. AT LAKE LEVEL...RAIN IS EXPECTED FOR MUCH OF
THURSDAY NIGHT...BEFORE CHANGING TO SNOW BY EARLY FRIDAY MORNING.
AS A RESULT...LESS SNOW IS EXPECTED BELOW 7000 FEET BUT SOME AREAS
MAY STILL RECEIVE UP TO 8 INCHES OF SNOW BY FRIDAY AFTERNOON.

A WINTER STORM WATCH MEANS THERE IS A POTENTIAL FOR SIGNIFICANT
SNOW ACCUMULATIONS THAT MAY CREATE HAZARDOUS WINTER DRIVING
CONDITIONS. CONTINUE TO MONITOR THE LATEST FORECASTS.

$$
MJD

HTTP://WEATHER.GOV/RENO

000 
WWUS45 KREV 080555
WSWREV

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE RENO NV
955 PM PST WED FEB 7 2007

CAZ072-NVZ002-081300-
/O.CAN.KREV.SN.Y.0003.000000T0000Z-070208T1200Z/
/O.CON.KREV.WS.A.0002.070209T0000Z-070210T0000Z/
GREATER LAKE TAHOE AREA-
INCLUDING THE CITIES OF...SOUTH LAKE TAHOE...TAHOE CITY...
TRUCKEE...MARKLEEVILLE...GLENBROOK...INCLINE VILLAGE
955 PM PST WED FEB 7 2007

...SNOW ADVISORY IS CANCELLED...
...WINTER STORM WATCH REMAINS IN EFFECT FROM THURSDAY AFTERNOON
THROUGH FRIDAY AFTERNOON...

THE NATIONAL WEATHER SERVICE IN RENO HAS CANCELLED THE SNOW
ADVISORY. A WINTER STORM WATCH REMAINS IN EFFECT FROM THURSDAY
AFTERNOON THROUGH FRIDAY AFTERNOON. 

THE STORM SYSTEM WEAKENED AS IT MOVED ACROSS CALIFORNIA THIS
AFTERNOON AND EVENING. SNOW WILL CONTINUE AT TIMES THROUGH
TONIGHT AS A COLD FRONT MOVES ACROSS THE AREA. SNOW ACCUMULATIONS
OF 2 TO 4 INCHES ARE EXPECTED ABOVE 6500 FEET BY LATE TONIGHT. AT
LAKE LEVEL UP TO 2 INCHES OF SNOW ARE EXPECTED. 

A STRONGER STORM IS EXPECTED TO MOVE INTO THE SIERRA BY THURSDAY
AFTERNOON. THIS STORM MAY PRODUCE HEAVY SNOW FROM THURSDAY
EVENING THROUGH FRIDAY WITH ADDITIONAL ACCUMULATION UP TO 2 FEET
ABOVE 7000 FEET. AT LAKE LEVEL...RAIN IS EXPECTED FOR MUCH OF
THURSDAY NIGHT...BEFORE CHANGING TO SNOW BY EARLY FRIDAY MORNING.
AS A RESULT...LESS SNOW IS EXPECTED BELOW 7000 FEET BUT SOME
AREAS MAY STILL RECEIVE UP TO 8 INCHES OF SNOW BY FRIDAY
AFTERNOON.

A WINTER STORM WATCH MEANS THERE IS A POTENTIAL FOR SIGNIFICANT
SNOW ACCUMULATIONS THAT MAY CREATE HAZARDOUS WINTER DRIVING
CONDITIONS. CONTINUE TO MONITOR THE LATEST FORECASTS.

$$


HTTP://WEATHER.GOV/RENO

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE RENO NV
330 PM PST TUE FEB 6 2007

.SHORT TERM...
RECORD WARM TEMPERATURES THIS AFTERNOON AS INCREASING SWLY WINDS
MIXED OUT INVERSIONS. HIGH REACHED 69 AT RENO AS OF 3 PM BREAKING
OLD RECORD OF 67 SET IN 1951. NEXT SYSTEM OFF CA COAST FORECAST TO
SPREAD LIGHT RAIN AND SNOW INTO LASSEN COUNTY AFTER 4 AM AND INTO
TAHOE AREA BY 10 AM. SNOW LEVELS GENERALLY IN 6500-7000 FOOT RANGE
ON WEDNESDAY LOWERING TO LAKE LEVEL OR AROUND 6000 FEET BY EARLY
WEDNESDAY EVENING. HAVE ISSUED SNOW ADVISORY FOR TAHOE AREA ABOVE
6500 FEET FROM 10 AM WEDNESDAY TO 10 PM WEDNESDAY WITH 4 TO 8 INCH
AACCUMLATIONS EXPECTED ABOVE 6500 FEET OR AT PASS LEVEL. SNOW
SHOWERS TAPERING OFF EARLY THURSDAY MORNING ALONG SIERRA WITH
PARTIAL CLEARING OVER MOST OF AREA THURSDAY MORNING. SIGNIFICANT
MODEL DIFFERENCES THURSDAY WITH NAM AND SOME OTHER MED RANGE MODELS
SHOWING A BREAK IN PCPN THURSDAY WHILE GFS WHICH SHOWS A MORE
CONTINUOUS PLUME OF SUBTROPICAL MOISTURE INTO AREA. WILL COMPROMISE
AND INDICATE A SHORTER BREAK OR LET UP IN PCPN ON THURSDAY MORNING
THEN SHOW INCREASING WARM ADVECTION PCPN THURSDAY AFTN AND EVENING.
SNOW LEVELS RISE TO AND FLUCTUATE BETWEEN 7000-8000 FEET THURSDAY
EVENING INTO SATURDAY. WILL NEED TO MONITOR SNOW LEVELS CLOSELY
AS MOST MAJOR MOUNTAIN PASSES ACROSS TAHOE AREA ARE CLOSE TO THIS
RANGE IN SNOW LEVELS. HEAVY RAINFALL THURSDAY NIGHT INTO SATURDAY
COULD RESULT IN SOME HYRDO PROBLEMS MAINLY ON SMALLER STREAMS AND
DRAINAGES...SEE HYDRO DISCUSSION AND ESFREV. NIGHT TEMPS REMAINING
QUITE MILD WITH SUBTROPICAL FLOW AND CLOUD COVER WILL HIGHS NEAR
SEASONAL NORMAL. CYLKE

.HYDROLOGY...

CURRENT HYDROLOGIC CONDITIONS DO NOT FAVOR MAINSTEM RIVER FLOODING.
SOILS ARE DRY AND SNOWPACK IS MINIMAL OR NON-EXISTENT BELOW ABOUT
7000 FEET.  RESERVOIRS HAVE PLENTY OF STORAGE CAPACITY...AND WATER
MANAGERS ARE WELCOMING THE PROSPECT OF PRECIPITATION.

HOWEVER...VERY HEAVY RAINFALL OVER SEVERAL DAYS WOULD QUICKLY CHANGE
THE SITUATION...AS SOILS WOULD BECOME SATURATED.  HEAVY RAIN WOULD
QUICKLY RUN OFF FROZEN SOILS AT HIGHER ELEVATIONS.  RUNOFF ON
SMALL...UNCONTROLLED RIVERS AND STREAMS COULD SOON RESULT IN
FLOODING.  ROCK AND MUD SLIDES OR DEBRIS FLOWS ARE ALSO POSSIBLE
DURING AND AFTER HEAVY RAIN.

SEE ESFREV FOR DETAILS.

.LONG TERM...SATURDAY THROUGH TUESDAY...
UPPED POPS FURTHER SATURDAY THROUGH SUNDAY...OTHERWISE ONLY COSMETIC
CHANGES TO TEMPS AND HUMIDITIES.

LITTLE CHANGE TO THE GENERAL MODEL AND ENSEMBLE THINKING...WITH HIGH
POPS IN THE SIERRA AND PORTIONS OF WESTERN NEVADA/EASTERN CALIFORNIA
SATURDAY AND SATURDAY NIGHT DECREASING TO CHANCES BY SUNDAY NIGHT
AFTER A COLD FRONTAL PASSAGE. THERE IS STILL GOOD ENSEMBLE AND MODEL
SUPPORT FOR THE HIGH POPS SATURDAY INTO SUNDAY WITH THE SUBTROPICAL
TAP. SEE THE HYDROLOGIC OUTLOOK (RNOESFREV) AND SPECIAL WEATHER
STATEMENT (RNOSPSREV) FOR MORE DETAILS OF THE POSSIBLE IMPACTS OF
SIGNIFICANT RAINS THIS WEEKEND.

WITH UNSETTLED FLOW CONTINUING POST-FROPA...I COULD NOT ELIMINATE
POPS THROUGH THE ENTIRE FORECAST PERIOD WITH LITTLE HOPE OF TIMING
ANY FAST MOVING SHORT WAVES IN THE FLOW. HOWEVER...THE SUBTROPICAL
FIRE HOSE LOOKS TO BE CUTOFF AFTER SUNDAYS FROPA...WITH COOLER AND
SHOWERY WEATHER FOR THE BALANCE OF THE FORECAST. I BROAD BRUSHED THE
CHANCE FOR SHOWERS IN THE NORTHERN SIERRA AND SLIGHT CHANCES INTO
THE GREAT BASIN SUNDAY NIGHT THROUGH TUESDAY. SNYDER
&&

.AVIATION...
VFR THROUGH 12Z WEDNESDAY...THEN AREAS MVFR CIGS IN -SHRA NRN TWEB
ROUTE 376. MT OBSCURATION AND -SN ABV 7000 FT SPREADING SOUTH TO
KTVL AND KRNO BTWN 18Z-23Z WEDNESDAY...WITH ISOLD/SCT -SHRA
SPREADING OVER TWEB ROUTE 403 AFT 00Z. SNYDER
&&

.REV WATCHES/WARNINGS/ADVISORIES...
NV...SNOW ADVISORY FROM 10 AM TO 10 PM PST WEDNESDAY FOR NVZ002
     ABOVE 6500 FEET.
CA...SNOW ADVISORY FROM 10 AM TO 10 PM PST WEDNESDAY FOR CAZ072
     ABOVE 6500 FEET.
&&

HTTP://WEATHER.GOV/RENO