Severe Thunderstorm Warning 46, NWS Reno, NV

000 
WWUS55 KREV 200126
SVSREV

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE RENO NV
626 PM PDT FRI SEP 19 2008

NVC001-031-200145-
/O.CON.KREV.SV.W.0046.000000T0000Z-080920T0145Z/
CHURCHILL NV-WASHOE NV-
625 PM PDT FRI SEP 19 2008

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 645 PM PDT
FOR EXTREME SOUTHEASTERN WASHOE AND NORTHWESTERN CHURCHILL
COUNTIES...

AT 617 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING PENNY SIZE
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS 
LOCATED APPROXIMATELY 10 MILES EAST OF NIXON (ALONG THE 
WASHOE-CHURCHILL COUNTY LINE)...OR ABOUT 24 MILES SOUTHEAST OF 
PYRAMID LAKE...MOVING NORTHEAST AT 25 MPH.

THE SEVERE THUNDERSTORM WILL AFFECT AREAS NORTH OF I-80 AND EAST OF 
HIGHWAY 447 THROUGH 645 PM.

PREPARE NOW FOR HIGH WINDS...HAIL...HEAVY RAIN AND DEADLY LIGHTNING.
DURING A SEVERE THUNDERSTORM...SEEK SHELTER INSIDE A STURDY STRUCTURE
AND STAY AWAY FROM WINDOWS.

WHEN IT IS SAFE...REPORT ANY WIND DAMAGE...LARGE HAIL...OR FLOODING
FROM THIS STORM TO THE NATIONAL WEATHER SERVICE IN RENO. CALL OUR
OFFICE AT 775-673-8100. YOUR REPORT MAY SAVE LIVES

LAT...LON 3994 11887 3976 11914 3980 11926 3988 11932
      4000 11920 4000 11896 3997 11888 3996 11885
TIME...MOT...LOC 0125Z 219DEG 22KT 3988 11917

$$
CS

000 
WWUS55 KREV 200137
SVSREV

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE RENO NV
637 PM PDT FRI SEP 19 2008

NVC001-031-200146-
/O.EXP.KREV.SV.W.0046.000000T0000Z-080920T0145Z/
CHURCHILL NV-WASHOE NV-
636 PM PDT FRI SEP 19 2008

...THE SEVERE THUNDERSTORM WARNING FOR EXTREME SOUTHEASTERN WASHOE
AND NORTHWESTERN CHURCHILL COUNTIES EXPIRES AT 645 PM PDT...

THE STORMS THAT EARLIER PROMPTED THE SEVERE THUNDERSTORM WARNING HAVE
WEAKENED...THEREFORE THE WARNING WILL BE ALLOWED TO EXPIRE. 
HOWEVER...STRONG THUNDERSTORMS WILL AFFECT FAR NORTHWEST CHURCHILL 
AND SOUTHWEST PERSHING COUNTIES THROUGH 700 PM PDT... CAPABLE OF 
PRODUCING GUSTY WINDS...DEADLY LIGHTNING...AND BRIEF HEAVY RAINS.

IF YOU OBSERVED ANY WIND DAMAGE...LARGE HAIL...OR FLOODING FROM THE
STORM EARLIER...REPORT IT TO THE NATIONAL WEATHER SERVICE IN RENO.
CALL OUR OFFICE AT 775-673-8100. YOUR REPORTS HELP US IMPROVE OUR
WARNING PROCESS.

LAT...LON 3994 11887 3976 11914 3980 11926 3988 11932
      4000 11920 4000 11896 3997 11888 3996 11885
TIME...MOT...LOC 0136Z 219DEG 22KT 3993 11911

$$
CS

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE RENO NV
320 PM PDT FRI SEP 19 2008

.SHORT TERM...
UPPER LOW WAS ACCELERATING EASTWARD THIS AFTERNOON IN RESPONSE TO
UPSTREAM JET AND TROUGH TRANSLATING FAIRLY QUICKLY SOUTHEASTWARD
FROM THE GULF OF ALASKA. THE 12Z GFS HAS GONE TO A SLIGHTLY MORE
OPEN AND PROGRESSIVE FEATURE TONIGHT AS IT MOVES ACROSS NORTHERN
CALIFORNIA AND INTO NORTHWEST NEVADA. THE ECMWF CONTINUES CLOSED
WITH LOW THROUGH SATURDAY MORNING BUT MAINTAINS CONTINUITY AND
GENERAL CONSENSUS WITH FORECAST TRACK. THERMODYNAMIC PARAMETERS HAD
NOT CHANGED A WHOLE LOT WITH FORECAST INSTABILITY MARGINAL(MUCAPE ON
THE ORDER OF SEVERAL HUNDRED J/KG). STRONG CAP IN MORNING SOUNDING
HAD ERODED CONSIDERABLY AS NOTED IN THE 19Z SPECIAL KREV SOUNDING
WITH COOLING ALOFT IN ADVANCE OF APPROACHING UPPER LOW. THE KEY
FACTOR IN THUNDERSTORM DEVELOPMENT WILL CONTINUE TO BE DYNAMIC
RESPONSE FROM LEFT FRONT EXIT REGION OF ASSOCIATED 90KT JET MAXIMA.
LATEST RADAR IMAGERY WAS BEGINNING TO PICK UP ON SOME ECHOES OVER
PLUMAS AND WESTERN LASSEN COUNTIES SUGGESTING CAP WAS DISAPPEARING
AND LARGE SCALE LIFT WERE GETTING UNDERWAY. SHOWERS THUNDERSTORMS
WILL CONTINUE TO DEVELOP AHEAD OF UPPER LOW OVER NORTHEAST
CALIFORNIA WHILE A SECONDARY AREA OF CONVECTION WILL FIRE ALONG
CONVERGENCE ZONE OVER FAR WESTERN NEVADA. ACTIVITY WILL LIKELY
CONTINUE WELL INTO THE EVENING IN RESPONSE TO THIS LARGE SCALE
ASCENT WITH BEST COVERAGE NORTH OF I-80. SPEED PROFILES IN THE MID
AND UPPER LEVELS SUGGEST SOME ORGANIZATION TO CELLS...SO A FEW WILL
BE STRONG WITH GUSTY OUTFLOW WINDS. INSTABILITY/DYNAMICS TRANSLATE
NORTHEAST OF AREA OVERNIGHT WITH ISOLATED SHOWERS LINGERING NORTH
AND EAST OF RENO.

RIDGE WINDS WERE APPROACHING 50KT ON THE CREST WHILE OTHER MOUNTAIN
SENSORS WERE A BIT SLOW TO COME UP. MODEL SOUNDINGS WERE A BIT
STRONG AT 19Z BASED ON SPECIAL SOUNDING DATA. HOWEVER WINDS WERE
GUSTING NEAR 20KT AT KTRK/KTVL AND SUGGEST LOCAL GUSTS MAY REACH
30-35 MPH LATE AFTERNOON INTO EARLY EVENING. SO WILL CONTINUE THE
LAKE WIND ADVISORY ON LAKE TAHOE. OTHERWISE HUMIDITY LEVELS WERE
STAYING HIGH AND LOCAL WIND GUSTS ALONG THE SIERRA FRONT ARE NOT
EXPECTED TO CAUSE FIRE WEATHER ISSUES.

A GENERAL NORTHWEST FLOW WILL ENSUE BEHIND EXITING UPPER LOW ON
SATURDAY AND CONTINUE INTO MONDAY. SHORTWAVE ENERGY WILL BRING
MAINLY SOME CLOUDS ACROSS NORTHERN AREAS NEAR THE OREGON/IDAHO STATE
LINES DURING PERIOD. PATTERN WILL RESULT IN TEMPERATURES JUST
SLIGHTLY BELOW NORMALS FOR MID/LATE SEPTEMBER. HOHMANN

.LONG TERM...TUESDAY THROUGH FRIDAY...
OVERALL WEATHER PATTERN FAVORS DRY CONDITIONS WITH A WARMING TREND
THRU LATE NEXT WEEK. ZONAL FLOW EARLY NEXT WEEK IS EXPECTED TO LIFT
NORTH AS RIDGE BUILDS OVER THE SWRN US. BAROCLINIC ZONE SHOULD
REMAIN TOO FAR NORTH FOR BRINGING PRECIP INTO THE REGION...ALTHOUGH
SOME CIRRUS IS LIKELY TO SPREAD INTO NERN CA AND NWRN NV ON TUESDAY.

AS TEMPS WARM UP TO THE MID 80S THURS-FRI AND FLOW ALOFT
WEAKENS...AFTERNOON CUMULUS WILL DEVELOP MAINLY IN MINERAL AND MONO
COUNTIES. WARM AIR ALOFT WILL LIKELY PREVENT TSTM FORMATION BOTH
DAYS...ALTHOUGH THE ECMWF LEAVES THE DOOR OPEN FOR POSSIBLE
CONVECTION FRIDAY IF WEAK LOW PRESSURE MOVES CLOSE ENOUGH TO THE CA
COAST TO PROVIDE ENOUGH LIFT TO OVERCOME THE CAP. THE GFS ALSO
INDICATES A WEAK LOW OFF THE CA COAST BY FRIDAY BUT KEEPS A DRIER
AND MORE STABLE SW FLOW AT 500 MB. FOR NOW THE FORECAST WILL REMAIN
DRY BUT SOME SINGLE DIGIT POPS WILL BE ADDED TO MINERAL-MONO ZONES
DUE TO THE POTENTIAL FOR MORE INSTBY AS INDICATED BY THE ECMWF DATA.
MJD
&&

.AVIATION...
ISOLD-SCT TSTMS FORMING MAINLY NORTH OF I-80 EAST OF THE CARSON
RANGE...WITH MORE ORGANIZED TSTMS NORTH OF KLOL-PYRAMID LAKE-EAGLE
LAKE LINE BTWN 00Z-05Z. STRONGER STORMS COULD PRODUCE BRIEF IFR VSBY
AND OUTFLOW GUSTS TO 40 KT. TSTM THREAT SHOULD END BY 03Z AT KRNO
AND 05Z AT KLOL. ISOLD -SHRA COULD CONTINUE THRU 09-10Z FROM KLOL
NORTHWARD. VFR ALL AREAS ON SATURDAY. MJD
&&

.REV WATCHES/WARNINGS/ADVISORIES...
NV...LAKE WIND ADVISORY UNTIL TO 8 PM PDT THIS EVENING FOR NVZ002.

CA...LAKE WIND ADVISORY UNTIL 8 PM PDT THIS EVENING FOR CAZ072.

&&

HTTP://WEATHER.GOV/RENO

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE RENO NV
357 PM PDT FRI SEP 19 2008

NVZ003-004-192345-
GREATER RENO-CARSON CITY-MINDEN AREA-WESTERN NEVADA BASIN AND RANGE
INCLUDING PYRAMID LAKE-
403 PM PDT FRI SEP 19 2008

...THUNDERSTORMS JUST WEST OF PYRAMID LAKE...

AT 355 PM PDT...NATIONAL WEATHER SERVICE METEOROLOGISTS ARE TRACKING
A STRONG THUNDERSTORM 15 MILES SOUTHWEST OF PYRAMID LAKE...AND
MOVING NORTH AT 20 MPH.

FREQUENT DEADLY LIGHTNING...AND STRONG GUSTY WINDS OF 40 TO 50
MPH...ARE EXPECTED WITH THIS STORM AS IT PASSES NEAR THE NORTH END
OF PYRAMID LAKE. PERSONS ON PYRAMID LAKE SHOULD MOVE TO SHORE AND
TAKE SHELTER NOW. DO NOT WAIT FOR THE STORM TO ARRIVE. STRONG
OUTFLOW WINDS CAN TRAVEL MANY MILES FROM THE STORM.

HOHMANN

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE RENO NV
458 PM PDT FRI SEP 19 2008

NVZ003-004-200040-
GREATER RENO-CARSON CITY-MINDEN AREA-WESTERN NEVADA BASIN AND RANGE
INCLUDING PYRAMID LAKE-
458 PM PDT FRI SEP 19 2008

...NEW STRONG THUNDERSTORM DEVELOPING NEAR THE SOUTH END OF PYRAMID
LAKE...

AT 451 PM PDT...NATIONAL WEATHER SERVICE METEOROLOGISTS ARE TRACKING
A STRONG THUNDERSTORM NEAR NIXON...OR 19 MILES SOUTHEAST OF PYRAMID
LAKE...AND MOVING NORTH AT 15 MPH. ADDITIONAL STORMS WERE CONTINUING
WEST OF GERLACH.

OCCASIONAL LIGHTNING...MODERATE RAIN WITH RAINFALL AMOUNTS OF AROUND
ONE HALF INCH PER HOUR REDUCING VISIBILITIES TO LESS THAN THREE
MILES...AND GUSTY WINDS OF AROUND 30 TO 40 MPH...WITH AREAS OF
BLOWING DUST...ARE LIKELY WITH THESE STORMS.

* SOME LOCATIONS AFFECTED INCLUDE...NIXON...FOX MOUNTAIN...SMOKE
CREEK DESERT...AND PYRAMID LAKE.

TRAVELERS ON HIGHWAY 447 BETWEEN I-80 AND GERLACH WILL ENCOUNTER
THESE STORMS.

IF ON OR NEAR PYRAMID LAKE...GET OUT OF THE WATER AND MOVE INDOORS
OR INSIDE A VEHICLE NOW. DONT BE CAUGHT ON THE WATER IN A
THUNDERSTORM. STRONG WIND GUSTS AND LIGHTNING NEAR THUNDERSTORMS
POSE AN IMMEDIATE DANGER TO BOATERS.

CS

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE RENO NV
458 PM PDT FRI SEP 19 2008

NVZ003-004-005-200040-
GREATER RENO-CARSON CITY-MINDEN AREA-WESTERN NEVADA BASIN AND RANGE
INCLUDING PYRAMID LAKE-NORTHERN WASHOE COUNTY-
458 PM PDT FRI SEP 19 2008

...NEW STRONG THUNDERSTORM DEVELOPING NEAR THE SOUTH END OF PYRAMID
LAKE...

AT 451 PM PDT...NATIONAL WEATHER SERVICE METEOROLOGISTS ARE TRACKING
A STRONG THUNDERSTORM NEAR NIXON...OR 19 MILES SOUTHEAST OF PYRAMID
LAKE...AND MOVING NORTH AT 15 MPH. ADDITIONAL STORMS WERE CONTINUING
WEST OF GERLACH.

OCCASIONAL LIGHTNING...MODERATE RAIN WITH RAINFALL AMOUNTS OF AROUND
ONE HALF INCH PER HOUR REDUCING VISIBILITIES TO LESS THAN THREE
MILES...AND GUSTY WINDS OF AROUND 30 TO 40 MPH...WITH AREAS OF
BLOWING DUST...ARE LIKELY WITH THESE STORMS.

* SOME LOCATIONS AFFECTED INCLUDE...NIXON...FOX MOUNTAIN...SMOKE
CREEK DESERT...AND PYRAMID LAKE.

TRAVELERS ON HIGHWAY 447 BETWEEN I-80 AND GERLACH WILL ENCOUNTER
THESE STORMS.

IF ON OR NEAR PYRAMID LAKE...GET OUT OF THE WATER AND MOVE INDOORS
OR INSIDE A VEHICLE NOW. DONT BE CAUGHT ON THE WATER IN A
THUNDERSTORM. STRONG WIND GUSTS AND LIGHTNING NEAR THUNDERSTORMS
POSE AN IMMEDIATE DANGER TO BOATERS.

CS

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE RENO NV
542 PM PDT FRI SEP 19 2008

NVZ003>005-200135-
GREATER RENO-CARSON CITY-MINDEN AREA-NORTHERN WASHOE COUNTY-WESTERN
NEVADA BASIN AND RANGE INCLUDING PYRAMID LAKE-
542 PM PDT FRI SEP 19 2008

...SCATTERED THUNDERSTORMS...SOME STRONG...OVER FAR WESTERN NEVADA...

AT 534 PM PDT...NATIONAL WEATHER SERVICE METEOROLOGISTS ARE TRACKING
STRONG THUNDERSTORMS FROM SOUTHEAST OF CEDARVILLE TO NEAR GERLACH
AND SOUTH TO FERNLEY. THESE STORMS WERE GENERALLY MOVING NORTHEAST
AT 25 MPH. ADDITIONAL STORMS MAY DEVELOP FURTHER SOUTH INTO STOREY
AND FAR NORTHERN LYON COUNTIES...AND MOVE INTO WESTERN SECTIONS OF
CHURCHILL AND PERSHING COUNTIES.

OCCASIONAL LIGHTNING...MODERATE RAIN WITH RAINFALL AMOUNTS OF AROUND
ONE HALF INCH PER HOUR REDUCING VISIBILITIES TO LESS THAN THREE
MILES...SMALL PEA OR MARBLE SIZE HAIL...AND GUSTY WINDS OF AROUND 30
TO 40 MPH...ARE LIKELY WITH THESE STORMS. LOCALIZED AREAS OF BLOWING
DUST ARE ALSO POSSIBLE.

* SOME LOCATIONS AFFECTED INCLUDE...CATNIP MOUNTAIN...EMPIRE...
FERNLEY...GERLACH...NIXON AND PYRAMID LAKE.

TRAVELERS ON HIGHWAY 447 NORTH FROM I-80 TO GERLACH AND EAGLEVILLE
WILL ENCOUNTER THESE STORMS. BE PREPARED TO SLOW DOWN IF
ENCOUNTERING HEAVY RAIN. TRAVELERS ON I-80 WEST OF FERNLEY MAY ALSO
ENCOUNTER BRIEF HEAVY RAIN.

IF ON OR NEAR PYRAMID LAKE...GET OUT OF THE WATER AND MOVE INDOORS
OR INSIDE A VEHICLE NOW. DONT BE CAUGHT ON THE WATER IN A
THUNDERSTORM. STRONG WIND GUSTS AND LIGHTNING NEAR THUNDERSTORMS
POSE AN IMMEDIATE DANGER TO BOATERS.

STAY TUNED TO NOAA ALL HAZARDS RADIO...WEATHER.GOV/RENO ON THE
INTERNET...OR LOCAL MEDIA FOR LATER UPDATES AND POSSIBLE WARNINGS.

CS