Flash Flood Warning 18, NWS Reno, NV

306 
WGUS75 KREV 280058
FFSREV

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE RENO NV
558 PM PDT SAT JUL 27 2013

CAC051-NVC005-280106-
/O.CAN.KREV.FF.W.0018.000000T0000Z-130728T0230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MONO CA-DOUGLAS NV-
558 PM PDT SAT JUL 27 2013

...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR SOUTHEASTERN
DOUGLAS AND NORTHWESTERN MONO COUNTIES...

THE STORMS THAT EARLIER PROMPTED THE FLASH FLOOD WARNING HAVE
DISSIPATED...WITH A DIMINISHING FLOOD THREAT. REMEMBER THAT MINOR
FLOODING OF LOW SPOTS MAY CONTINUE FOR SEVERAL HOURS.

LAT...LON 3866 11960 3867 11935 3846 11935 3846 11956
      3849 11954 3855 11958 3861 11963

$$

TF

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE RENO NV
204 PM PDT SAT JUL 27 2013

.SYNOPSIS...
MOIST AND UNSTABLE AIR MASS WILL KEEP THE THREAT OF SHOWERS AND
THUNDERSTORMS MAINLY SOUTH OF HIGHWAY 50 THROUGH THIS WEEKEND WHILE
A GRADUAL DRYING TREND WILL REDUCE THE THUNDERSTORM POTENTIAL
ELSEWHERE. DRY AND LOCALLY BREEZY CONDITIONS ARE EXPECTED NEXT WEEK
WITH TEMPERATURES SLIGHTLY BELOW NORMAL.

&&

.SHORT TERM...

NOT TOO MUCH HAS CHANGED WITHIN THE SHORT TERM MODELS FROM THE
PREVIOUS RUNS. THEREFORE, LITTLE HAS CHANGED FOR THE SHORT TERM
FORECAST. DID SPLIT THE CHARACTER OF PRECIPITATION TONIGHT AFTER
MIDNIGHT AND TOMORROW EARLY TOMORROW MORNING. AFTER 12Z TOMORROW,
REMOVED THUNDERSTORM WORDING, BUT KEPT ISOLATED SHOWERS FOR MONO
AND MINERAL COUNTIES. ALSO, ADDED ISOLATED THUNDERSTORMS FOR
MINERAL AND SOUTHERN MONO COUNTIES ON MONDAY SINCE THE LATEST
RUNS CONTINUE TO SHOW THE CHANCE OF SOME ISOLATED ACTIVITY ALONG A
WEAK BOUNDARY IN THE AFTERNOON.

FOR THIS EVENING AND VERY EARLY TOMORROW MORNING, THUNDERSTORMS
WILL CONTINUE OVER MONO AND AND MINERAL COUNTY AS JET DYNAMICS
STRENGTHEN. THIS AREA REMAINS UNDER THE RIGHT ENTRANCE REGION OF A
STRENGTHENING JET AND WILL BE WELL VENTILATED BY UPPER LEVEL
DIFFLUENCE. THIS SHOULD AID IN MAINTAINING NOCTURNAL CONVECTION
AND SUBSEQUENT SHOWERS LATER TOMORROW MORNING. CONVECTION WILL
FIRE ONCE AGAIN SOUTH OF HIGHWAY 50 TOMORROW AFTERNOON ALTHOUGH
FORCING ALOFT LOOKS A LITTLE WEAKER THAN TODAY WITH SLIGHTLY LOWER
PWATS. A WEAK PRESSURE DISCONTINUITY WILL REMAIN OVER MONO AND
MINERAL COUNTIES ON MONDAY. SHORT TO MID RANGE MODELS HAVE SHOWN
SOME LOWER CHANCES OF PRECIPITATION ALONG THIS BOUNDARY IN EASTERN
MINERAL AND SOUTHERN MONO COUNTY OVER THE LAST COUPLE/THREE RUNS;
ADDED SOME SLIGHT CHANCES OF AN AFTERNOON THUNDERSTORM TO THESE
AREAS ALONG THE BOUNDARY. SURFACE CONVERGENCE AND INSTABILITY
SHOULD BE SUFFICIENT TO ALLOW FOR A FEW THUNDERSTORMS.

OTHERWISE, TEMPERATURES TREND SLIGHTLY BELOW SEASONAL AVERAGES
INTO THE UPPER 80S TO LOW 90S FOR WESTERN NEVADA VALLEYS BY
MONDAY. WINDS WILL BE TYPICAL AFTERNOON ZEPHYRS OUTSIDE OF ANY
OUTFLOWS. BOYD

.LONG TERM...TUESDAY THROUGH SATURDAY...

FEW CHANGES IN THE EXTENDED FORECAST WHICH WILL FEATURE AN UPPER
LEVEL LOW OFF THE PACIFIC NORTHWEST. THIS WILL PROVIDE OUR AREA WITH
A GENERALLY DRY SOUTHWEST TO WEST FLOW ALOFT AND MOSTLY CLEAR
CONDITIONS THROUGH NEXT WEEK. THIS LOW WILL PROVIDE OUR REGION WITH
INCREASED WINDS BY WEDNESDAY AS AN EMBEDDED SHORTWAVE TROUGH ROTATES
THROUGH THE MAIN FLOW. THIS WILL STRENGTHEN THE SURFACE PRESSURE
GRADIENT AND INCREASE WINDS ALOFT WITH THE CORE OF THE UPPER LEVEL
JET CROSSING THE SIERRA WEDNESDAY AFTERNOON. COULD SEE SOME GUSTY
WINDS DEVELOP ACROSS THE RIDGES WITH WINDS MIXING DOWN TO THE
SURFACE THROUGH THE AFTERNOON. GUSTS AROUND 30-40 MPH ARE POSSIBLE
WITH THE STRONGER WINDS EXISTING GENERALLY NORTH OF HIGHWAY 50.
BEYOND WEDNESDAY, EXPECT TYPICAL AFTERNOON WEST WINDS WITH PEAK
GUSTS 20-30 MPH. EXPECTING SEASONABLE TEMPERATURES FOR MUCH OF THE
WEEK WITH HIGH TEMPERATURES IN THE UPPER 80S TO LOW 90S ACROSS
WESTERN NEVADA AND UPPER 70S TO LOW 80S IN SIERRA VALLEYS. FUENTES

.AVIATION...

THE THREAT OF AFTERNOON SHOWERS AND EVENING THUNDERSTORMS WILL
CONTINUE TO BE PRIMARILY SOUTH OF HIGHWAY 50. KMMH WILL BE THE
TERMINAL CLOSEST TO CONVECTIVE ACTIVITY. GUSTS AROUND 40 MPH FROM
STORM OUTFLOW, SMALL HAIL, AND LOCALLY HEAVY RAINFALL CAN BE
EXPECTED WITHIN THE LARGER STORM CELLS AND AVIATORS SHOULD TAKE
CARE. STORMS DISSIPATE THIS EVENING OR SHIFT EASTWARD INTO CENTRAL
NEVADA AWAY FROM AREA TERMINALS. MORE AFTERNOON THUNDERSTORMS CAN
BE EXPECTED SOUTH OF HIGHWAY 50 TOMORROW AND FEWER ON MONDAY AS A
DRYING TREND BEGINS. OTHERWISE, EXPECT AFTERNOON ZEPHYRS GENERALLY
ON THE LIGHTER SIDE WITH WESTERLY GUSTS UP TO 25 KNOT. BOYD

&&

.REV WATCHES/WARNINGS/ADVISORIES...
NV...FLASH FLOOD WATCH UNTIL 9 PM PDT THIS EVENING NVZ001.

CA...FLASH FLOOD WATCH UNTIL 9 PM PDT THIS EVENING CAZ073.

&&

FOR MORE INFORMATION FROM THE NATIONAL WEATHER SERVICE VISIT...
HTTP://WEATHER.GOV/RENO (ALL LOWER CASE)

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE RENO NV
547 AM PDT SAT JUL 27 2013

CAZ070>073-NVZ001>005-280100-
SURPRISE VALLEY CALIFORNIA-LASSEN-EASTERN PLUMAS-
EASTERN SIERRA COUNTIES-GREATER LAKE TAHOE AREA-MONO-
MINERAL AND SOUTHERN LYON COUNTIES-GREATER RENO-CARSON CITY-
MINDEN AREA-WESTERN NEVADA BASIN AND RANGE INCLUDING PYRAMID LAKE-
NORTHERN WASHOE COUNTY-
547 AM PDT SAT JUL 27 2013

THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE EASTERN SIERRA...
NORTHEAST CALIFORNIA AND WESTERN NEVADA.

.DAY ONE...TODAY AND TONIGHT

ISOLATED TO SCATTERED SHOWERS AND THUNDERSTORMS ARE EXPECTED TO
DEVELOP ALONG THE EASTERN SIERRA AND WESTERN NEVADA THIS
AFTERNOON AND SHOULD CONTINUE INTO THE EVENING. LOCALLY HEAVY
RAIN...HAIL...GUSTY WINDS AND DEADLY LIGHTNING CAN BE EXPECTED
WITH THE STORMS.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY

SCATTERED SHOWERS AND THUNDERSTORMS ARE AGAIN POSSIBLE ON SUNDAY
...MAINLY SOUTH OF INTERSTATE 80. HIGH PRESSURE WILL THEN START TO
BUILD INTO THE REGION ON MONDAY WITH DRY CONDITIONS AND NEAR
NORMAL TEMPERATURES THROUGH NEXT WEEK.

.SPOTTER INFORMATION STATEMENT...
SKYWARN SPOTTER ACTIVATION IS POSSIBLE THIS AFTERNOON. SPOTTERS
ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER ACCORDING TO STANDARD
OPERATING PROCEDURES.

FOR MORE INFORMATION FROM THE NATIONAL WEATHER SERVICE VISIT...
HTTP://FORECAST.WEATHER.GOV/HAZARDS/REV  (ALL LOWER CASE)

O'HARA

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE RENO NV
117 PM PDT SAT JUL 27 2013

CAZ073-NVZ001-272100-
MINERAL AND SOUTHERN LYON COUNTIES-MONO-
117 PM PDT SAT JUL 27 2013

...STRONG STORMS DEVELOPING ACROSS MONO COUNTY...

AT 108 PM PDT...NATIONAL WEATHER SERVICE METEOROLOGISTS WERE TRACKING
A CLUSTER OF DEVELOPING STRONG AND NEARLY STATIONARY THUNDERSTORMS
SOUTH OF BRIDGEPORT NEAR BODIE. STORMS ARE ALSO DEVELOPING NEAR
CRESTVIEW.

OCCASIONAL LIGHTNING...HEAVY RAIN WITH AMOUNTS NEAR ONE INCH PER
HOUR...PENNY SIZE HAIL...AND GUSTY WINDS TO 45 MPH...WILL OCCUR WITH
THESE STORMS.

* LOCATIONS AFFECTED INCLUDE......BODIE...CONWAY SUMMIT...CRESTVIEW
AND JUNE LAKE.

HEAVY RAINFALL IS OCCURRING WITH THIS STORM. EXPECT PONDING OF WATER
ON ROADWAYS. IN AREAS OF STEEP TERRAIN...MINOR ROCK SLIDES ARE
POSSIBLE. DRIVERS SHOULD SLOW DOWN AND TURN ON THEIR HEADLIGHTS IF
ENCOUNTERING HEAVY RAINS.

&&

LAT...LON 3822 11943 3840 11864 3777 11838 3763 11905
      3772 11913 3771 11925 3777 11927 3780 11922
      3790 11923 3795 11933 3805 11932 3809 11938
TIME...MOT...LOC 2012Z 169DEG 2KT 3820 11913

TF