Flash Flood Warning 27, NWS Las Vegas, NV

000
WGUS75 KVEF 170210
FFSVEF

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LAS VEGAS NV
710 PM PDT WED JUL 16 2008

CAC071-170315-
/O.CON.KVEF.FF.W.0027.000000T0000Z-080717T0315Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
SAN BERNARDINO CA-
710 PM PDT WED JUL 16 2008

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 815 PM PDT FOR
CENTRAL SAN BERNARDINO COUNTY...

AT 700 PM PDT...A THUNDERSTORM PRODUCING VERY HEAVY RAIN WAS IN THE 
PROCESS OF WEAKENING SOUTH OF DAGGETT. RADAR INDICATES IN EXCESSIVE 
OF TWO INCHES OF RAIN FELL OVER A SMALL AREA OF THE DAGGETT WASH 
SOUTH OF INTERSTATE 40 INTERCHANGE. FLOODING OF OLD MINE ROAD IS 
LIKELY OCCURRING. RUNOFF FROM THE EXCESSIVE RAINFALL COULD ALSO 
IMPACT PENDLETON ROAD WHICH LIES SOUTH OF INTERSTATE 40.

THIS THUNDERSTORM WITH EXCESSIVE RAIN WILL OTHERWISE REMAIN OVER
MAINLY RURAL AREAS OF THE INDICATED COUNTY.

MOST FLOOD DEATHS OCCUR IN AUTOMOBILES. NEVER DRIVE YOUR VEHICLE INTO
AREAS WHERE WATER COVERS THE ROADWAY. FLOOD WATERS ARE USUALLY DEEPER
THAN THEY APPEAR. JUST ONE FOOT OF FLOWING WATER IS POWERFUL ENOUGH
TO SWEEP VEHICLES OFF THE ROAD. WHEN ENCOUNTERING FLOODED ROADS MAKE
THE SMART CHOICE...TURN AROUND...DONT DROWN.

LAT...LON 3475 11655 3475 11665 3476 11666 3477 11695
      3479 11697 3489 11696 3482 11648 3474 11648
      3474 11655

$$

PIERCE

000
WGUS75 KVEF 170311
FFSVEF

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LAS VEGAS NV
811 PM PDT WED JUL 16 2008

CAC071-170319-
/O.EXP.KVEF.FF.W.0027.000000T0000Z-080717T0315Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
SAN BERNARDINO CA-
811 PM PDT WED JUL 16 2008

...THE FLASH FLOOD WARNING WILL EXPIRE AT 815 PM PDT FOR CENTRAL SAN 
BERNARDINO COUNTY...

THE STORM THAT DUMPED IN EXCESSIVE OF TWO INCHES OF RAIN OVER THE 
DAGGETT WASH BASIN SOUTH OF INTERSTATE 40 HAS DISSIPATED. THE FLASH 
FLOOD WARNING WILL EXPIRE AT 815 PM.  

LAT...LON 3475 11655 3475 11665 3476 11666 3477 11695
      3479 11697 3489 11696 3482 11648 3474 11648
      3474 11655

$$

PIERCE

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAS VEGAS NV
330 PM PDT WED JUL 16 2008

.SYNOPSIS...AN UPPER LEVEL LOW PRESSURE SYSTEM WHICH HAS BEEN OVER
THE AREA WILL FINALL MOVE EAST OF THE AREA BY LATE THURSDAY. MOIST
AND UNSTABLE CONDITIONS WILL CONTINUE TO PRODUCE ISOLATED TO
SCATTERED THUNDERSTORMS OVER THE AREA THROUGH THIS EVENING BEFORE A
SLOW DRYING TAKES PLACE INTO THE WEEKEND.
&&

.SHORT TERM...UPPER LOW APPEARS TO BE OVER SOUTHWEST LINCOLN AND
NORTHWEST CLARK COUNTIES THIS AFTERNOON LOOKING AT VISIBLE SATELLITE
LOOP. THIS FEATURE CONTINUES TO COMBINE WITH A MOIST AND UNSTABLE
AIR MASS TO PRODUCE THUNDERSTORMS WITH LOCALLY HEAVY RAIN. THIS IS
EXPECTED TO CONTINUE THROUGH THIS EVENING. A DOWNWARD TREND OF
THUNDERSTORM ACTIVITY WILL BEGIN THURSDAY AS THE UPPER LOW FINALLY
MOVES EAST. MOISTURE AND INSTABILITY WILL GRADUALLY DECREASE
THURSDAY THROUGH FRIDAY. A GOOD PORTION OF THE FORECAST AREA COULD
STILL SEE ISOLATED TO SCATTERED THUNDERSTORMS THURSDAY BUT ANY
STORMS SHOULD BE LIMITED TO MOHAVE COUNTY AND FAR EASTERN LINCOLN
COUNTY FRIDAY. TEMPERATURES WILL RISE TO ABOVE NORMAL LEVELS BY
FRIDAY AS THE DRIER AIR MOVES IN.

.LONG TERM...THERE IS SOME INDICATION IN MODEL FORECASTS THAT A
RETURN OF MOISTURE COULD HAPPEN LATE IN THE WEEKEND OR EARLY NEXT
WEEK. THE MAIN FEATURES THAT WILL DETERMINE IF THIS HAPPENS IS HIGH
PRESSURE EAST OF THE AREA AND LOW PRESSURE WEST. IN ADDITION...THE
ECMWF IS FORECASTING A DISTURBANCE MOVING WESTWARD TROUGH NORTHERN
MEXICO WHICH COULD PROVIDE A MOISTURE SOURCE. LATE IN THE EXTENDED
PERIOD THE EC ALSO FORECASTS A TROPICAL SYSTEM MOVING THROUGH THE
EASTERN PACIFIC AND POTENTIALLY CONTRIBUTING TO THE AMOUNT OF
MOISTURE. THIS FORECAST PACKAGE CALLS FOR A HOT AND MAINLY DRY DAY
SATURDAY FOLLOWED BY A RETURN OF THUNDERSTORMS TO THE EASTERN CWA BY
SUNDAY AND MONDAY. THE INCREASING MOISTURE SHOULD LOWER TEMPERATURES
AFTER SATURDAY BUT THEY WILL BE HIGHLY DEPENDENT ON AMOUNT OF CLOUD
COVER AND SHOWER ACTIVITY.
&&

.AVIATION...FOR MCCARRAN...MOSTLY CLOUDY CONDITIONS TO CONTINUE OVER
CLARK COUNTY THROUGH THE REST OF THE AFTERNOON AND INTO THE EVENING.
ISOLATED TO SCATTERED THUNDERSTORMS EXPECTED IN AND AROUND THE LAS
VEGAS VALLEY THROUGH EARLY EVENING WITH HEAVY RAIN AND GUSTY WINDS
THE PRIMARY THREAT. STORMS WILL ALSO CONTINUE TO IMPACT ALL APPROACH
CORRIDORS BEFORE DISSIPATING THROUGH THE EVENING. SURFACE WINDS WILL
BE VARIABLE BASED ON THUNDERSTORM OUTFLOW BUT OVERALL SHOULD REMAIN
LIGHT.

FOR THE REST OF SOUTHERN NEVADA...NORTHWEST ARIZONA...AND SOUTHEAST
CALIFORNIA...PARTLY TO MOSTLY CLOUDY SKIES ACROSS THE FORECAST AREA
THIS AFTERNOON WILL CONTINUE INTO THE EVENING. ISOLATED TO SCATTERED
THUNDERSTORMS TO CONTINUE ACROSS MUCH OF THE REGION WITH HEAVY RAIN
AND GUSTY WINDS BEING THE PRIMARY THREAT. OVERALL...SURFACE WINDS
ARE EXPECTED TO BE GENERALLY LIGHT.
&&

.VEF WATCHES/WARNINGS/ADVISORIES...
NV...NONE.
AZ...NONE.
CA...NONE.
&&

HARRISON/SALMEN

HTTP://WEATHER.GOV/LASVEGAS

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE LAS VEGAS NV
649 AM PDT WED JUL 16 2008

AZZ001>003-036-CAZ519>527-NVZ014>022-170500-
NORTHWEST PLATEAU-LOWER COLORADO RIVER VALLEY-NORTHWEST DESERTS-
LAKE MEAD NATIONAL RECREATION AREA-EASTERN SIERRA SLOPES-
OWENS VALLEY-WHITE MOUNTAINS OF INYO COUNTY-
DEATH VALLEY NATIONAL PARK-WESTERN MOJAVE DESERT-
EASTERN MOJAVE DESERT-MORONGO BASIN-CADIZ BASIN-
SAN BERNARDINO COUNTY-UPPER COLORADO RIVER VALLEY-
ESMERALDA AND CENTRAL NYE COUNTY-LINCOLN COUNTY-
NORTHEAST CLARK COUNTY-WESTERN CLARK AND SOUTHERN NYE COUNTY-
SHEEP RANGE-SPRING MOUNTAINS-LAS VEGAS VALLEY-
SOUTHERN CLARK COUNTY-
649 AM PDT WED JUL 16 2008 /649 AM MST WED JUL 16 2008/

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTHWEST
ARIZONA...CALIFORNIA AND SOUTHERN NEVADA.

.DAY ONE...TODAY AND TONIGHT

A MOIST AND UNSTABLE AIR MASS WILL REMAIN OVER THE AREA TODAY FOR
SCATTERED...MAINLY AFTERNOON AND EVENING THUNDERSTORMS WITH LOCAL
GUSTY WINDS. POSSIBLE BRIEF HEAVY RAIN MAY PRODUCE ISOLATED FLASH
FLOODING OR URBAN FLOODING. THE BEST CHANCE OF THUNDERSTORMS WILL
BE OVER NORTHERN MOHAVE COUNTY...CLARK AND LINCOLN COUNTIES AND
SOUTHEAST INYO COUNTY. HOWEVER ISOLATED ACTIVITY POSSIBLE ACROSS
ALL AREAS.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

DRIER AIR WILL BEGIN TO MOVE OVER THE AREA BY THURSDAY AND THEN
INTO THE END OF THE WEEK. HOWEVER ISOLATED THUNDERSTORMS WILL
CONTINUE ACROSS THE MAINLY THE EASTERN PORTION OF THE DISTRICT ON
THURSDAY AND THEN CONFINED MAINLY TO NORTHWEST ARIZONA FRIDAY INTO
TUESDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED TODAY. SPOTTERS ARE ALWAYS
ENCOURAGED TO REPORT ANY SIGNIFICANT WEATHER AS SOON AS IT IS
SAFE TO DO SO.