Flash Flood Warning 16, NWS Reno, NV

000 
WGUS75 KREV 290000
FFSREV

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE RENO NV
451 PM PDT TUE AUG 28 2007

CAC057-061-290115-
NEVADA CA-PLACER CA-
451 PM PDT TUE AUG 28 2007

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 615 PM PDT FOR
NORTHEASTERN PLACER AND NORTHEASTERN NEVADA COUNTIES...

AT 447 PM PDT...A LINE OF STRONG THUNDERSTORMS EXTENDED FROM NEAR 
DONNER SUMMIT SOUTHEAST TO NEAR NORTHSTAR SKI AREA. AT 410 PM PDT A 
TRAINED WEATHER SPOTTER REPORTED THUNDERSTORMS PRODUCING VERY HEAVY 
RAIN NEAR PROSSER LAKE THAT LASTED OVER 30 MINUTES...AND IS CAUSING 
WATER TO FLOW DOWN RESIDENTIAL STREETS. 

LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO PROSSER CREEK
RESERVOIR...HIRSCHDALE...BOCA RESERVOIR...TRUCKEE...INTERSTATE 80 
FROM DONNER SUMMIT TO HIRSCHDALE...AND STATE ROAD 267 FROM 
INTERSTATE 80 TO NEAR NORTHSTAR SKI AREA.

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL 
CREEKS AND STREAMS...HIGHWAYS AND UNDERPASSES. IN AREAS OF STEEP 
TERRAIN...ESPECIALLY ALONG INTERSTATE 80 BETWEEN HIRSCHDALE AND 
DONNER SUMMIT...ROCK...MUD AND DEBRIS SLIDES ARE LIKELY.
ADDITIONALLY...COUNTRY ROADS AND AREAS ALONG THE BANKS OF 
CREEKS...STREAMS AND OTHER LOW LYING AREAS ARE SUBJECT TO FLOODING.  
DRIVERS SHOULD SLOW DOWN AND TURN ON THEIR HEADLIGHTS IF 
ENCOUNTERING HEAVY RAINS. REMEMBER...EVEN ONCE THE RAINFALL SUBSIDES 
FLOOD WATERS WILL TAKE SOME TIME TO RECEDE. 

LAT...LON 3944 12029 3940 12003 3936 11999 3922 12011
      3925 12025 3934 12031
TIME...MOT...LOC 2351Z 180DEG 0KT 3939 12027 3932 12008
          3931 12004

$$

BENINATO

000 
WGUS75 KREV 290042
FFSREV

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE RENO NV
539 PM PDT TUE AUG 28 2007

CAC057-061-290051-
NEVADA CA-PLACER CA-
539 PM PDT TUE AUG 28 2007

...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR NORTHEASTERN PLACER
AND NORTHEASTERN NEVADA COUNTIES...

THE THUNDERSTORMS WHICH EARLIER PRODUCED UP TO ONE AND A HALF INCHES 
OF RAIN NEAR TRUCKEE AND I-80...HAVE WEAKENED CONSIDERABLY AND MOVED 
WEST OF THE SIERRA CREST. NO ADDITIONAL REPORTS OF FLOODING HAVE 
BEEN RECEIVED BY LOCAL LAW ENFORCEMENT. PEOPLE SHOULD STILL REMAIN 
ALERT FOR PONDING WATER ON LOCAL ROADWAYS...AND RESIDUAL RUNOFF 
WHICH MAY CONTINUE FOR ANOTHER HOUR OR SO.

IF YOU HAVE ANY REPORTS OF FLOODING FROM THE EARLIER STORMS NEAR 
TRUCKEE...PLEASE CONTACT THE NATIONAL WEATHER SERVICE IN RENO.

LAT...LON 3944 12029 3940 12003 3936 11999 3922 12011
      3925 12025 3934 12031
TIME...MOT...LOC 0039Z 180DEG 0KT 3939 12027 3932 12008
          3931 12004

$$
CS

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE RENO NV
236 PM PDT TUES AUG 28 2007

.SHORT TERM...
WEAK UPPER DISTURBANCE OVER CENTRAL CA IS SLOWLY PUSHING NORTH OVER
THE CENTRAL SIERRA THIS AFTERNOON. THIS LITTLE VORT MAX IS PROVIDING
SOME ENHANCED LIFT OVER THE SOUTHERN PORTIONS OF THE CWA...CAUSING
SCATTERED THUNDERSTORMS AND SHOWERS THAT WILL CONTINUE THROUGH THE
REST OF THE AFTERNOON AND INTO THIS EVENING. WITH HIGH PW VALUES
PUSHING UP FROM SOUTHERN NV...AS WELL AS VERY LITTLE STORM
MOVEMENT...THESE STORMS WILL PRODUCE SOME MEASURABLE PRECIP. THE
STRONGEST STORMS WILL PRODUCE LOCALLY HEAVY RAINFALL AND A VERY
SLIGHT POSSIBILITY FOR FLASH FLOODING. SO FAR...THE STRONGEST STORMS
HAVE REMAINED TO THE WEST OF THE SIERRA CREST. MOST OF THE
CONVECTIVE ACTIVITY WILL END THIS EVENING AS WE LOSE DAYTIME
HEATING...BUT THERE IS A POSSIBILITY OF ISOLATED SHOWERS AND
THUNDERSTORMS OVERNIGHT WITH THE VORT MAX PROVIDING SOME ELEVATED
CONVECTION...MAINLY ALONG THE SIERRA CREST AND PUSHING UP INTO THE
TAHOE AND LASSEN ZONES BY WEDNESDAY MORNING. WE SAW SOME NOCTURNAL
CONVECTION FROM THIS WAVE LAST NIGHT OVER THE SOUTHERN SIERRA...SO
IT IS DEFINITELY NOT OUT OF THE QUESTION TONIGHT IN OUR AREA.

WEDNESDAY...CONVECTIVE FOCUS WILL SHIFT NORTHWARD TO THE NORTHERN
LASSEN-NORTHERN WASHOE CONVERGENCE AREA NORTH OF RENO AND TRUCKEE.
SHORTWAVE RIDGING BEHIND THE LITTLE WAVE SHOULD INHIBIT ANY
CONVECTION AROUND RENO-TAHOE. WEAK INSTABILITY ACROSS MONO-MINERAL
COUNTIES WILL CAUSE SOME ISOLATED CELLS TO DEVELOP IN THE AFTERNOON
AND EARLY EVENING.

THURSDAY IS LOOKING LIKE PRETTY GOOD DAY FOR CONVECTION AROUND THE
REGION. WEAK JET MAX/SHORTWAVE WILL BE MOVING INTO THE AREA WITH
GOOD DIFFLUENCE AND STEEPER LAPSE RATES ALOFT. MOISTURE WILL
CONTINUE TO PUSH UP INTO THE AREA...WITH PW VALUES JUMPING UP TO
ANYWHERE FROM 3/4-1. BETTER SHEAR ALOFT WILL MAY HELP TO GET ANY
STORMS THAT DO FIRE TO ORGANIZE BETTER THAN WE HAVE SEEN THE LAST
COUPLE DAYS. THE MAIN CONCERN FOR ME IS THE SOUTHWEST FLOW ALOFT THAT
HAS A TENDENCY TO INHIBIT CONVECTION...ESPECIALLY OVER THE LEE OF
THE SIERRA. FOR NOW...WILL CONTINUE TO LEAVE SLIGHT CHANCES ACROSS
THE ENTIRE CWA FOR THURSDAY AFTERNOON WITH CONVECTIVE FOCUS SHIFTING
EASTWARD THROUGH THE DAY.

TEMPERATURES WILL CONTINUE TO REMAIN WELL ABOVE NORMAL FOR THIS TIME
OF YEAR. WE WILL APPROACH THE UPPER 90S IN THE DESERT VALLEYS ON
WEDNESDAY AND THURSDAY...REMAINING JUST A FEW DEGREES BELOW RECORDS.
WITH INCREASED CLOUD COVER OVER THE REGION THE NEXT COUPLE
DAYS...LOW TEMPS WILL REMAIN IN THE HIGH 60S...EVEN 70S IN THE
WESTERN NV VALLEYS.  HOON

.LONG TERM...SATURDAY THROUGH TUESDAY...
BY SATURDAY THE PERSISTENT RIDGE THAT HAS BEEN OVER THE SWRN CONUS
SHOULD START TO FLATTEN IN RESPONSE TO A SERIES OF SHORTWAVES MOVING
THROUGH THE NRN TIER.  THE RIDGE IS PROGGED TO BE CENTERED OVER THE
COLORADO RIVER BASIN ON BOTH SATURDAY AND SUNDAY WITH LIGHT SWLY
FLOW OVER THE NRN SIERRA AND NWRN NEVADA.

THE RIDGE IS PROGGED TO BUILD SLIGHTLY TO THE WEST ON MONDAY AS A
VORT MAX MOVES INTO THE PACIFIC NW.  THIS WILL TURN OUR FLOW TO MORE
WLY BUT THE UPR FLOW SHOULD STILL BE LIGHT WITH THE MAIN DYNAMICS
STAYING WELL TO OUR NORTH.  A STRONGER VORT MAX IS THEN PROGGED TO
APPROACH ORE/WA ON TUESDAY.  THIS STRENGTHENING SYSTEM WILL PUSH
COLDER AIR TO THE SOUTH WITH LOWERING HEIGHTS. THE PRESSURE GRADIENT
OVER OUR NWRN ZONES WILL ALSO TIGHTEN.

CONDITIONS SHOULD REMAIN DRY THROUGH THE EXTENDED.  THE ONLY CHANGE
WILL BE TOWARD TUESDAY AS THE DEEPENING UPPER LOW MOVES TOWARD THE
PACIFIC NW.  COOLER AIR MOVING IN SHOULD DROP TEMPERATURES A DEGREE
OR TWO ON TUESDAY.  WIND SPEEDS SHOULD ALSO INCREASE SOMEWHAT AS THE
GRADIENT TIGHTENS.  TEMPERATURES WILL CONTINUE AROUND 10 DEGREES
ABOVE NORMAL SATURDAY THROUGH TUESDAY.  OHARA

&&

.AVIATION...
VFR CONDITIONS WILL CONTINUE THROUGH WEDNESDAY.  ISOLD TSTMS CAN BE
EXPECTED FROM 20Z THRU 03Z SOUTH OF A LINE FROM KTVL TO KNFL.  ON
WEDNESDAY TSTM COVERAGE SHOULD EXPAND AND EXTEND TO THE NE ACROSS
ERN CHURCHILL AND PERSHING COUNTIES.  OHARA

&&

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

HTTP://WEATHER.GOV/RENO

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE RENO NV
309 PM PDT TUE AUG 28 2007

CAZ073-282300-
MONO-
309 PM PDT TUE AUG 28 2007

...STRONG STORM JUST WEST OF BODIE STATE PARK...

AT 306 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM NEAR CONWAY SUMMIT...OR 8 MILES SOUTHEAST OF
BRIDGEPORT...AND MOVING SOUTHWEST AT 5 MPH.

OCCASIONAL LIGHTNING...HEAVY RAIN WITH RAINFALL AMOUNTS OF AROUND ONE
INCH PER HOUR REDUCING VISIBILITIES TO LESS THAN ONE MILE...SMALL PEA
OR MARBLE SIZE HAIL...AND GUSTY WINDS OF AROUND 30 TO 40 MPH... ARE
EXPECTED WITH THIS STORM.

THIS STORM WILL BE...
  NEAR JUNCTION US 395 AND CA 270 (BODIE RD) BY 315 PM PDT.
  NEAR JUNCTION US 395 AND CA 270 (BODIE RD) BY 320 PM PDT.
  NEAR CONWAY SUMMIT BY 325 PM PDT.
  NEAR JUNCTION US 395 AND CA 167 BY 330 PM PDT.
  NEAR TWIN LAKES BY 400 PM PDT.

HEAVY RAINFALL IS OCCURRING WITH THIS STORM. EXPECT PONDING OF WATER
ON LOCAL ROADWAYS. IN AREAS OF STEEP TERRAIN...MINOR ROCK SLIDES ARE
POSSIBLE...ESPECIALLY ALONG BODIE ROAD BETWEEN HIGHWAY 395 AND BODIE
STATE PARK. DRIVERS SHOULD SLOW DOWN AND TURN ON THEIR HEADLIGHTS IF
ENCOUNTERING HEAVY RAINS.

IF YOU ARE IN THE PATH OF THIS STORM...SEEK SHELTER INDOORS AND STAY
AWAY FROM WINDOWS. STAY TUNED TO NOAA ALL HAZARDS RADIO...
WEATHER.GOV/RENO ON THE INTERNET...OR LOCAL MEDIA FOR LATER UPDATES
AND POSSIBLE WARNINGS.

HOON

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE RENO NV
345 PM PDT TUE AUG 28 2007

CAZ073-NVZ001-282330-
MINERAL AND SOUTHERN LYON COUNTIES-MONO-
345 PM PDT TUE AUG 28 2007

...STRONG THUNDERSTORM CAPABLE OF PRODUCING HEAVY RAIN AND SMALL
HAIL WEST OF BENTON...

AT 344 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM 10 MILES NORTHWEST OF BENTON ALONG CALIFORNIA
STATE ROAD 120 BETWEEN BENTON AND THE JUNCTION OF HIGHWAY 395...AND
MOVING NORTH AT 10 MPH.

FREQUENT LIGHTNING...MODERATE TO HEAVY RAIN WITH RAINFALL AMOUNTS OF
ONE HALF TO ONE 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 EXPECTED WITH THIS STORM.

FREQUENT LIGHTNING IS OCCURRING WITH THIS STORM. MOVE INDOORS IF
POSSIBLE. STAY AWAY FROM WINDOWS AND DOORS...AND AVOID USING THE
TELEPHONE UNLESS IT IS AN EMERGENCY.

LOCALLY HEAVY RAINFALL IS OCCURRING WITH THIS STORM. EXPECT PONDING
OF WATER ON LOCAL ROADWAYS. IN AREAS OF STEEP TERRAIN ALONG
CALIFORNIA STATE ROAD 120 BETWEEN BENTON AND THE JUNCTION OF HIGHWAY
395...MINOR ROCK SLIDES ARE POSSIBLE. DRIVERS SHOULD SLOW DOWN AND
TURN ON THEIR HEADLIGHTS IF ENCOUNTERING HEAVY RAINS.

BENINATO

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE RENO NV
347 PM PDT TUE AUG 28 2007

CAZ072-282345-
GREATER LAKE TAHOE AREA-
347 PM PDT TUE AUG 28 2007

...STRONG THUNDERSTORM OVER INTERSTATE 80 NEAR TRUCKEE...

AT 350 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM ON INTERSTATE 80 NEAR TRUCKEE. THIS STORM WAS
DRIFTING SLOWLY WEST AT 5 MPH.

FREQUENT LIGHTNING...HEAVY RAIN WITH RAINFALL AMOUNTS OF AROUND ONE
INCH PER HOUR REDUCING VISIBILITIES TO LESS THAN ONE MILE...SMALL PEA
OR MARBLE SIZE HAIL...AND GUSTY WINDS OF AROUND 30 TO 40 MPH...ARE
EXPECTED WITH THIS STORM.

THIS STORM WILL BE...
  NEAR PROSSER CREEK RESERVOIR BY 415 PM PDT.

ADDITIONAL THUNDERSTORMS PRODUCING LOCALLY HEAVY RAINFALL AND
POSSIBLE SMALL HAIL WILL CONTINUE THROUGH 445 PM ACROSS EASTERN
NEVADA COUNTY AND NEAR THE NORTH SHORE OF LAKE TAHOE. BOATERS NEAR
KINGS BEACH...CRYSTAL BAY AND TAHOE VISTA...AND ALSO ON INDEPENDENCE
LAKE SHOULD SEEK SAFE HARBOR.

IF YOU ARE IN THE PATH OF THESE STORM...SEEK SHELTER INDOORS AND STAY
AWAY FROM WINDOWS. STAY TUNED TO NOAA ALL HAZARDS RADIO...
WEATHER.GOV/RENO ON THE INTERNET...OR LOCAL MEDIA FOR LATER UPDATES
AND POSSIBLE WARNINGS.

MJD