Flash Flood Warning 24, NWS Las Vegas, NV

000
WGUS75 KVEF 152114
FFSVEF

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LAS VEGAS NV
214 PM PDT TUE JUL 15 2008

AZC015-NVC003-152230-
/O.CON.KVEF.FF.W.0024.000000T0000Z-080715T2230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MOHAVE AZ-CLARK NV-
214 PM MST TUE JUL 15 2008

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 330 PM MST/330 PM
PDT/ FOR EAST CENTRAL CLARK AND WEST CENTRAL MOHAVE COUNTIES...

AT 205 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THE 
HEAVY RAIN HAS DIMINISHED. HOWEVER...RUNOFF FROM EARLIER STORMS IS 
LIKELY CONTINUING TO PRODUCE FLASH FLOODING NEAR TEMPLE BAR.

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE 
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS 
SAFELY. MOVE TO HIGHER GROUND.

LAT...LON 3613 11434 3613 11411 3594 11412 3594 11434

$$

SC

000
WGUS75 KVEF 152205
FFSVEF

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LAS VEGAS NV
305 PM PDT TUE JUL 15 2008

AZC015-NVC003-152213-
/O.CAN.KVEF.FF.W.0024.000000T0000Z-080715T2230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MOHAVE AZ-CLARK NV-
305 PM MST TUE JUL 15 2008

...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR EAST CENTRAL CLARK
AND WEST CENTRAL MOHAVE COUNTIES...

THE THREAT OF FLASH FLOODING HAS DIMINISHED AND THEREFORE THE FLASH 
FLOOD WARNING FOR EAST CENTRAL CLARK AND MOHAVE COUNTIES HAS BEEN 
CANCELLED. HOWEVER...ADDITIONAL THUNDERSTORMS ARE POSSIBLE OVER THE 
NEXT COUPLE OF HOURS.

LAT...LON 3613 11434 3613 11411 3594 11412 3594 11434

$$

SC

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAS VEGAS NV
ISSUED BY NATIONAL WEATHER SERVICE FLAGSTAFF AZ
915 AM PDT TUE JUL 15 2008

.SYNOPSIS...A MOIST AND UNSTABLE AIR MASS WILL REMAIN OVER THE AREA
TODAY RESULTING IN ISOLATED TO SCATTERED THUNDERSTORMS...MAINLY
DURING THE AFTERNOON AND EVENING HOURS. SOME STORMS MAY PRODUCE
HEAVY RAINFALL. STORM COVERAGE WILL GRADUALLY DECREASE INTO THE
LATTER PART OF THE WEEK AS DRIER SOUTHWEST FLOW DEVELOPS.

&&

.UPDATE...
A MOIST AND UNSTABLE AIRMASS REMAINS OVER THE AREA...WITH SURFACE
DEWPOINTS PRIMARILY IN THE 50S AND 1.1 INCH PRECIPITABLE WATER IN
THE 12Z DESERT ROCK SOUNDING FROM 12Z. AN AREA OF BROKEN MID LEVEL
CLOUD DECK REMAINS CENTERED AROUND THE LAS VEGAS METRO
AREA...ALTHOUGH RADAR INDICATES A FEW SPRINKLES AT THE MOST REACHING
THE SURFACE. EXPECT ISOLATED-SCATTERED AFTERNOON-EVENING
THUNDERSTORMS TO DEVELOP WITH SURFACE HEATING TODAY. CURRENT
FORECAST PACKAGE IS IN GOOD SHAPE AN NO UPDATES PLANNED THIS MORNING.
&&

.AVIATION...FOR MCCARRAN...PARTLY TO MOSTLY CLOUDY SKIES EXPECTED
THROUGH 20Z WITH CLOUD BASES AROUND 14K FEET AGL. AS WITH THE PAST
FEW DAYS THUNDERSTORMS WILL ONCE AGAIN DEVELOP IN AND AROUND THE LAS
VEGAS VALLEY. STORMS CAN BE EXPECTED BETWEEN 20Z-00Z AND ARE LIKELY
TO PRODUCE BRIEF PERIODS OF HEAVY RAIN AND GUSTY WINDS. AFTER 00Z
STORMS WILL BECOME MORE ISOLATED WITH MAINLY THE OUTER APPROACH
CORRIDORS AFFECTED. THUNDERSTORMS EXPECTED TO END BY LATE EVENING.

FOR THE REST OF SOUTHERN NEVADA...NORTHWEST ARIZONA...AND SOUTHEAST
CALIFORNIA...NEARLY THE SAME CONDITIONS EXPECTED TODAY AS WITH THE
PAST FEW DAYS. THUNDERSTORMS ARE EXPECTED TO DEVELOP BETWEEN 19Z AND
00Z WITH BRIEF PERIODS OF HEAVY RAIN AND GUSTY WINDS. THUNDERSTORMS
WILL DECREASE IN INTENSITY AND COVERAGE LATE IN THE EVENING AND
OVERNIGHT.
&&

.PREVIOUS DISCUSSION...315 AM PDT TUE JUL 15...SHORT TERM...SIMILAR
TO MONDAY...LITTLE CHANGE TO THE OVERALL WEATHER PATTERN ACROSS THE
CWA AS MOIST AND UNSTABLE CONDITIONS DOMINATE THE WEATHER PICTURE
FOR TODAY. INCH PLUS PRECIPITABLE WATER VALUES WITH -2 TO -4
LIS/GOOD DAYTIME HEATING AS DEBRIS CLOUDS DISSIPATE THROUGH THE
MORNING ALL POINT TO ISOLATED/SCATTERED MAINLY AFTERNOON/EVENING
CONVECTION. LOCALLY HEAVY RAINFALL ONCE AGAIN PROBABLE OVER THE
CWA...BUT ANY STRONG FOCUSING MECHANISM FOR ISSUANCE OF A FLASH
FLOOD WATCH CAN NOT BE FOUND ATTM. MODELS CONTINUE TO TREND TOWARDS
DRYING CONDITIONS FROM THE WEST AS SOUTHWEST FLOW DEVELOPS THROUGH
THE SHORT TERM. HOWEVER FLOW REMAINS LIGHT THOUGH 12Z FRIDAY...SO
DRYING WILL BE SLOW...AND MAY BE OVERDONE IN THE MODELS. DAYTIME
TEMPERATURES CONTINUE TO BE BELOW NORMAL SLOW DRYING HAVE BUMPED
TEMPS UP A FEW DEGREES BY THURSDAY.

.LONG TERM...THE LATEST MODEL GUIDANCE CONTINUES TO SHOW A SLOW
DRYING TREND FROM WEST TO EAST ACROSS THE CWA DURING THE EXTENDED
PERIOD. ITS POSSIBLE BY FRIDAY THAT ONLY MOHAVE COUNTY WILL BE THE
FOCUS OF CONVECTION. 700-500 MB FLOW WILL BECOME MORE SOUTHWEST BY
SATURDAY AND EVENTUALLY TURN TO THE NORTHWEST BY SUNDAY. THIS WILL
AT LEAST HELP DRY THINGS OUT IN THE MID LEVELS. GFS IS SHOWING A
FAIRLY STRONG EASTERLY WAVE MOVING THROUGH CENTRAL MEXICO DURING THE
WEEKEND...BUT IT LOOKS LIKE THIS ENERGY WILL REMAIN TOO FAR SOUTH
AND THE MID LEVEL HIGH WILL BE TOO STRONG. WILL KEEP POPS OVER
MOHAVE COUNTY THROUGH THE PERIOD AND END POPS OVER REMAINING AREAS
BY SATURDAY. TEMPERATURES WILL ALSO SHOW A WARMING TREND FROM WEST
TO EAST AS THE DRIER AIR MOVES IN.
&&

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

ONTON

HTTP://WEATHER.GOV/LASVEGAS

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE LAS VEGAS NV
419 AM PDT TUE JUL 15 2008

AZZ001>003-036-CAZ519>527-NVZ014>022-160230-
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-
419 AM PDT TUE JUL 15 2008 /419 AM MST TUE JUL 15 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 AFTERNOON AND EVENING THUNDERSTORMS. IN ADDITION TO
DANGEROUS LIGHTNING AND POSSIBLE STRONG WINDS...LOCAL HEAVY RAIN
COULD PRODUCE ISOLATED FLASH FLOODING OR URBAN FLOODING.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

SCATTERED THUNDERSTORMS CAN BE EXPECTED AGAIN WEDNESDAY FOLLOWED
BY DECREASING COVERAGE THURSDAY AND FRIDAY WITH THUNDERSTORMS
BEING CONFINED MAINLY TO NORTHWEST ARIZONA INTO THE WEEKEND. DRY
CONDITIONS ARE EXPECTED ACROSS THE ENTIRE AREA ON MONDAY.

.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.