Severe Thunderstorm Warning 28, NWS Reno, NV

000 
WWUS55 KREV 242125
SVSREV

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE RENO NV
225 PM PDT FRI JUL 24 2009

NVC021-242128-
/O.CAN.KREV.SV.W.0028.000000T0000Z-090724T2145Z/
MINERAL NV-
225 PM PDT FRI JUL 24 2009

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL MINERAL COUNTY IS
CANCELLED...

THE THUNDERSTORM THAT EARLIER PROMPTED THE SEVERE THUNDERSTORM 
WARNING HAS DIMINISHED...THEREFORE THE WARNING IS CANCELLED. 
HOWEVER...GUSTY OUTFLOW WINDS TO 50 MPH AND BLOWING DUST REDUCING 
VISIBILITY BELOW 3 MILES MAY AFFECT HIGHWAY 95 BETWEEN HAWTHORNE 
AND MINA THROUGH 3 PM.

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. 

LAT...LON 3858 11846 3843 11821 3820 11850 3831 11868
TIME...MOT...LOC 2118Z 218DEG 8KT 3836 11848

$$

BRONG

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE RENO NV
349 AM PDT FRI JUL 24 2009

.SHORT TERM...
MOSTLY CLEAR SKIES ACROSS THE KREV CWFA THIS MORNING.  SATELLITE
IMAGERY SHOWS AN AREA OF LOW PRESSURE MOVING THROUGH THE UPPER FLOW
ACROSS THE PACIFIC NW.  THE MODELS HAVE INITIALIZED WELL IN THEIR
DEPICTIONS OF THE LOCATION AND INTENSITY OF THIS FEATURE.  THE RIDGE
OF HIGH PRESSURE THAT CONTINUES ANCHORED OVER THE SWRN CONUS WILL
HELP TO KEEP THIS UPPER LOW WELL NORTH OF THE KREV CWFA.

AN EXTENSIVE AREA OF MONSOONAL MOISTURE SHOWS UP CLEARLY ON THE
LATEST SATELLITE IMAGERY.  MOISTURE HAS GREATLY INCREASED OVER THE
SRN GREAT BASIN THE LAST COUPLE OF DAYS.  THE 00Z KDRA SOUNDING HAD
A PRECIPITABLE WATER VALUE OF 1.09 INCH.  THIS IS NEARLY A QUARTER
INCH GREATER THAN ITS VALUE 24 HRS EARLIER.  THE 00Z KREV SOUNDING
HAD A PWAT VALUE OF 0.87 INCH.  THIS IS ALMOST 0.40 INCH GREATER
THAN ITS VALUE 24 HRS AGO.  THE AIR MASS OVER THE REGION IS
DEFINATELY MOISTENING UP.  EVEN WITHOUT AN MAJOR UPPER LEVEL
FORCING...AFTN HEATING WILL CREATE VERY WARM SFC TEMPERATURES AND
THIS WILL HELP TO DESTABILIZE THE LWR ATMOSPHERE.

THE FORECAST FOR TODAY CALLS FOR ISOLD TSTMS OVER THE SRN AND ERN
ZONES AS THIS IS WHERE THE MOISTURE WILL COMBINE WITH THE GREATEST
LLVL INSTABILITY.  AS IN THEIR PREVIOUS MODEL RUNS THE NAM AND GFS
SHOW THE AREA OF GREATEST INSTABILITY SHIFTING INTO THE ERN ZONES
...AND MAINLY THE ERN GREAT BASIN...ON SATURDAY.  THE MAIN AREA OF
RELATIVELY DEEP MOISTURE WILL REMAIN OVER THE SRN GREAT BASIN SO
WILL CONTINUE WITH THE FORECAST OF ISOLD TSTMS OVER THE SRN AND ERN
ZONES WITH SIMILAR COVERAGE AS TODAY.

ON SUNDAY THE SWRN CONUS RIDGE SHOULD BUILD WEST INTO CALIFORNIA AND
NEVADA AS THE AFOREMENTIONED UPPER LOW MOVES SE INTO THE NRN
ROCKIES.  WITH NO UPPER LEVEL DYNAMICS THE MAIN AREA OF FORCING WILL
BE ALONG THE SIERRA.  THE GFS PAINTS AN AREA OF QPF OVER THE SIERRA
CREST IN MONO COUNTY SUNDAY AFTN AND EVENING.  WILL CONTINUE WITH
THE CURRENT FORECAST OF TSTMS OVER MONO AND INTO WRN MINERAL COUNTY
FOR SUNDAY.

TEMPERATURES WILL CONTINUE TO BE ABOVE NORMAL FOR LATE JULY WITH
AFTN HIGHS IN THE UPPER 90S TO LOWER 100S IN WRN NEVADA VALLEYS AND
IN THE UPPER 80S TO MID 90S IN THE SIERRA VALLEYS.  OHARA

.LONG TERM...MONDAY THROUGH THURSDAY...
FEW CHANGES MADE TO THE EXTENDED FORECAST AS MODEL GUIDANCE
CONTINUES TO BUILD A RIDGE OVER THE WESTERN CONUS EARLY NEXT WEEK.
AFTERNOON HIGHS WILL CONTINUE TO BE HOT ACROSS THE REGION WITH
AFTERNOON HIGHS NEAR 100 IN WESTERN NV AND UPPER 80S TO NEAR 90 IN
THE HIGH SIERRA.  INSTABILITY DRIVEN AFTERNOON CONVECTION WILL
PRODUCE A SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS OVER THE HIGHER
TERRAIN OF MONO AND MINERAL COUNTIES ON MONDAY AND WILL EXPAND ALONG
THE SIERRA CREST NORTHWARD INTO THE TAHOE BASIN AND LASSEN COUNTY ON
TUESDAY.

MODELS HAVING ISSUES BY MID WEEK WITH DEVELOPING A CUT OFF LOW
PRESSURE CENTER OFF THE PACIFIC NW.  GFS DEVELOPS A WEAK SYSTEM OVER
BRITISH COLUMBIA THAT RETROGRADES OUT OFF THE PACIFIC NW AND SENDS A
WAVE ACROSS THE AREA BY LATE IN THE WEEK.  THE ECWMF BRINGS A CLOSED
LOW FROM THE WEST AND INTO THE NORTHERN CA COAST BY THURSDAY.  BOTH
MODELS HAVE DIFFERENT EFFECTS ON THE RIDGE.  THE GFS KEEPS THE RIDGE
OVERHEAD THROUGH THURSDAY WITH CONTINUED HOT WEATHER AND AFTERNOON
CONVECTION.  ECMWF SHIFTS THE RIDGE EAST AS THE LOW NEARS THE CA
COAST BRINGING MORE SOUTHERLY FLOW AND MOISTURE NORTHWARD.  LOW
CONFIDENCE IN ANY SOLUTION WITH LARGE SPREADS AMONG THE ENSEMBLE
MEMBERS.  FOR NOW CONTINUED HOT CONDITIONS WITH SLIGHT CHANCE OF
SHOWERS AND THUNDERSTORMS ALONG THE SIERRA CREST AND SOUTH OF
INTERSTATE 80 FOR WEDNESDAY AND THURSDAY.  MOZLEY

&&

.AVIATION...
VFR CONDITIONS THROUGH SATURDAY WITH THUNDERSTORMS NOT EXPECTED TO
AFFECT TERMINALS. LEE SIDE ZEPHYR GUSTS 20-25 KT BETWEEN 22Z-04Z
THIS AFTERNOON FOR KRNO...TKVL AND KTRK. MOZLEY

&&

.REV WATCHES/WARNINGS/ADVISORIES...
NV...NONE.
CA...NONE.
&&

HTTP://WEATHER.GOV/RENO

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE RENO NV
146 PM PDT FRI JUL 24 2009

NVZ001-242130-
MINERAL AND SOUTHERN LYON COUNTIES-
146 PM PDT FRI JUL 24 2009

...STRONG THUNDERSTORM OVER MINERAL COUNTY...

AT 141 PM PDT...NATIONAL WEATHER SERVICE METEOROLOGISTS ARE TRACKING
A STRONG THUNDERSTORM 5 MILES EAST OF TABLE MOUNTAIN NEAR HIGHWAY
359 MOVING NORTHEAST AT 10 MPH.

OCCASIONAL LIGHTNING...MODERATE RAIN TO HEAVY RAINFALL...SMALL HAIL
AND STRONG GUSTY WINDS TO 50 MPH...ARE POSSIBLE WITH THIS STORM.

THIS STORM MAY AFFECT TRAVELERS ON HIGHWAY 359 NEAR SWEETWATER RANCH
ROAD AND WHISKEY FLAT. DRIVERS SHOULD EXPECT STRONG GUSTY CROSS
WINDS...WITH RAPID VISIBILITY REDUCTIONS. HEAVY RAINFALL WILL RESULT
IN PONDING WATER. SLOW DOWN WHEN ENCOUNTERING HEAVY RAIN AND TURN ON
YOUR HEADLIGHTS.

&&

LAT...LON 3851 11839 3829 11825 3819 11861 3835 11872
TIME...MOT...LOC 2042Z 243DEG 7KT 3831 11856

BRONG