Flash Flood Warning 287, NWS Las Vegas, NV

369 
WGUS75 KVEF 062211
FFSVEF

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LAS VEGAS NV
311 PM PDT FRI SEP 6 2013

NVC003-062345-
/O.CON.KVEF.FF.W.0287.000000T0000Z-130906T2345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CLARK NV-
311 PM PDT FRI SEP 6 2013

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 445 PM PDT FOR
CENTRAL CLARK COUNTY...

AT 305 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 
ANOTHER THUNDERSTORM PRODUCING VERY HEAVY.  THIS STORM WAS LOCATED 7 
MILES WEST OF SUMMERLIN...OR NEAR RED ROCK CANYON...MOVING NORTHEAST 
AT 15 MPH. THE FIRST THUNDERSTORM PRODUCING ONE HALF TO ONE INCH OF 
RAIN ALONG AND TO THE WEST OF THE 215 BELTWAY. THE GAGE AT LONE 
MOUNTAIN AT HUALAPAI RECEIVED 0.94 INCHES IN TWENTY MINUTES.

LOCATIONS IMPACTED INCLUDE...
LONE MOUNTAIN.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FLASH FLOODING IS EXPECTED ON AREA ROADWAYS...AROUND UNDERPASSES...
AND IN NORMALLY DRY WASHES AND LOW LYING AREAS. FLASH FLOODING IS
NATURES NUMBER ONE KILLER. NEVER TRY TO CROSS A FLOODED ROADWAY OR
WALK THROUGH FLOODWATERS. TURN AROUND...DONT DROWN!

REPORT FLOODING BY POSTING YOUR REPORT TO THE LAS VEGAS NATIONAL
WEATHER SERVICE FACEBOOK PAGE...OR ON TWITTER USING...AT NWSVEGAS.

&&

LAT...LON 3627 11540 3627 11531 3626 11524 3622 11520
      3616 11538

$$

SC

754 
WGUS75 KVEF 062308
FFSVEF

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LAS VEGAS NV
408 PM PDT FRI SEP 6 2013

NVC003-062345-
/O.CON.KVEF.FF.W.0287.000000T0000Z-130906T2345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CLARK NV-
408 PM PDT FRI SEP 6 2013

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 445 PM PDT FOR
CENTRAL CLARK COUNTY...

AT 401 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THE 
HEAVY RAIN HAD DIMINISHED...WITH LIGHT TO MODERATE SHOWERS LINGERING 
OVER THE WESTERN PORTIONS OF THE VALLEY. RUNOFF FROM THE EARLIER 
RAIN CONTINUES TO PRODUCE SOME FLOODING IN THE LONE MOUNTAIN 
AREA...INCLUDING ALONG LONE MOUNTAIN ROAD...GOWAN AND ANN ROAD.  

LOCATIONS IMPACTED INCLUDE...
LONE MOUNTAIN.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FLASH FLOODING IS EXPECTED ON AREA ROADWAYS...AROUND UNDERPASSES...
AND IN NORMALLY DRY WASHES AND LOW LYING AREAS. FLASH FLOODING IS
NATURES NUMBER ONE KILLER. NEVER TRY TO CROSS A FLOODED ROADWAY OR
WALK THROUGH FLOODWATERS. TURN AROUND...DONT DROWN!

REPORT FLOODING BY POSTING YOUR REPORT TO THE LAS VEGAS NATIONAL
WEATHER SERVICE FACEBOOK PAGE...OR ON TWITTER USING...AT NWSVEGAS.

&&

LAT...LON 3627 11540 3627 11531 3626 11524 3622 11520
      3616 11538

$$

131 
WGUS75 KVEF 062339
FFSVEF

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LAS VEGAS NV
439 PM PDT FRI SEP 6 2013

NVC003-062346-
/O.EXP.KVEF.FF.W.0287.000000T0000Z-130906T2345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CLARK NV-
439 PM PDT FRI SEP 6 2013

...THE FLASH FLOOD WARNING WILL EXPIRE AT 445 PM PDT FOR CENTRAL
CLARK COUNTY...

MINOR FLOODING AND PONDING OF WATER MAY CONTINUE FOR THE NEXT COUPLE 
OF HOURS...BUT THE THREAT OF FLASH FLOODING HAS ENDED IN THE LONE 
MOUNTAIN AREA. THEREFORE...THE FLASH FLOOD WARNING WILL BE ALLOWED 
TO EXPIRE AT 445 PM. THE HIGHEST RAINFALL AMOUNTS WERE AT BOTH THE 
LONE MOUNTAIN AT HUALAPAI AND SUMMERLIN NORTHWEST GAGES...WHICH 
ENDED UP RECEIVING 0.94 INCHES OF RAINFALL IN LESS THAN AN HOUR. 

LAT...LON 3627 11540 3627 11531 3626 11524 3622 11520
      3616 11538

$$

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAS VEGAS NV
642 AM PDT FRI SEP 6 2013

.SYNOPSIS...MOIST AND UNSTABLE AIR WILL RESULT IN SHOWERS AND
THUNDERSTORMS IN THE AFTERNOON AND EVENING HOURS THROUGH SATURDAY.
AN INFUSION OF MOISTURE FROM THE TROPICS WILL RESULT IN AN INCREASED
POTENTIAL FOR SHOWERS AND THUNDERSTORMS FROM SUNDAY INTO WEDNESDAY
WITH THE POTENTIAL FOR ACTIVITY AT ANY TIME OF THE DAY. THERE WILL
BE THE POSSIBILITY OF LOCALLY HEAVY RAINFALL IN THIS TIME PERIOD.
TEMPERATURES WILL BE NEAR NORMAL THROUGH THE WEEKEND...THEN LOWER TO
BELOW NORMAL BY MONDAY.
&&

.UPDATE...RADAR SHOWING SOME LIGHT RAIN SHOWERS IN SOUTHEAST MOHAVE
COUNTY EXTENDING FROM NEAR PEACH SPRINGS TO SOUTH OF WIKIEUP.
EXPANDED THE AREAL COVERAGE OF PRECIPITATION THROUGH 18Z THIS
MORNING FOR SOUTHERN MOHAVE COUNTY.

.PREV DISCUSSION...
250 AM PDT FRI SEP 5 2013

.SHORT TERM...LITTLE CHANGE IN MOISTURE AND INSTABILITY PARAMETERS
WILL AGAIN LEAD TO ISOLATED TO SCATTERED AFTERNOON AND EARLY EVENING
THUNDERSTORMS OVER THE EASTERN AND SOUTHERN PORTIONS OF THE CWA. IT
DOES LOOK LIKE THERE WILL BE A SLIGHT INCREASE IN COVERAGE OVER SAN
BERNARDINO COUNTY TODAY AS SOME OF A HIGHER RES MODELS ARE
INDICATING A COUPLE OF WEAK RIPPLES MOVING ACROSS THE AREA THIS
AFTERNOON. THIS MAY LEAD TO AN INCREASE IN COVERAGE...BUT WILL HOLD
OFF ON ANY FLASH FLOOD WATCHES. ANY STORM THAT DOES DEVELOP WILL
HAVE THE POTENTIAL OF PRODUCING FLOODING...BUT WITH MID LEVEL WINDS
STILL AROUND 10-15KTS STORMS SHOULD MOVE FAIRLY QUICKLY TO THE
NORTH. SOME ACTIVITY MAY CONTINUE INTO THE EARLY EVENING...BUT
MAJORITY OF STORMS WILL DIMINISH AFTER SUNSET LIKE THAT HAVE OVER
THE PAST COUPLE OF DAYS. LOOKS LIKE SATURDAY WILL NOT BE MUCH
DIFFERENT AS MOISTURE AND INSTABILITY IN PLACE WILL AGAIN LEAD TO
AFTERNOON AND EARLY EVENING SHOWERS AND THUNDERSTORMS MAINLY OVER
THE SOUTHERN AND EASTERN PORTIONS OF THE CWA. TEMPERATURES ARE
EXPECTED TO REMAIN JUST A COUPLE OF DEGREES ABOVE NORMAL THROUGH
SATURDAY.

.LONG TERM...SUNDAY THROUGH THURSDAY...LORENA FORECAST BY NHC TO
REMAIN A TROPICAL STORM AS IT MOVES INTO SRN BAJA MEXICO THIS
EVENING. LORENA WILL THEN GRADUALLY WEAKEN OVER SRN BAJA MEXICO OVER
THE WEEKEND. MODELS CONSISTENT WRAPPING MOISTURE FROM LORENA
NORTHWARD AT LEAST INTO SOUTHEAST CALIFORNIA AND WESTERN ARIZONA ON
SUNDAY WITH MOISTURE SPREADING NORTHWARD INTO SOUTHERN NEVADA MONDAY
THROUGH THURSDAY. ADDED DYNAMICS FROM UPPER LOW OFF THE NRN BAJA
COAST WILL LIKELY MAKE FOR A FEW INTERESTING DAYS. ONLY CAVEAT MAY
BE A SIGNIFICANT AMOUNT OF CLOUD COVER WHICH WOULD INHIBIT SURFACE
HEATING WHICH WOULD KEEP THE PRECIPITATION AS SHOWERS. CONCERN IF
AIR MASS IS ALLOWED TO BECOME UNSTABLE WILL BE HEAVY RAIN AND FLASH
FLOODING. ADDED SHEAR COULD LEAD TO MORE ORGANIZED STORMS...BUT
BASED ON FORECAST SOUNDINGS WARM AIR PROCESSES COULD BE MORE
PRONOUNCED INHIBITING HAIL GROWTH. CLOUD COVER AND PRECIPITATION
FORECAST TO KEEP TEMPERATURES BELOW NORMAL.
&&

.AVIATION...FOR MCCARRAN...ISOLATED THUNDERSTORMS WILL AGAIN BE
POSSIBLE THIS AFTERNOON...BUT CHANCES ARE TOO SMALL TO INCLUDE IN
THE TAF. THE MORMON MESA...PEACH SPRINGS...AND DAGGETT APPROACH
CORRIDORS WILL SEE SLIGHTLY HIGHER CHANCES THIS AFTERNOON. SUNDAY
THROUGH WEDNESDAY THERE WILL BE THE POTENTIAL FOR SHRA/TSRA AT
ANYTIME OF THE DAY AS A MORE SIGNIFICANT INFLUX OF MOISTURE ARRIVES
IN SOUTHERN NEVADA.

FOR THE REST OF SOUTHERN NEVADA...NORTHWEST ARIZONA...AND SOUTHEAST
CALIFORNIA...ISOLATED AFTERNOON THUNDERSTORMS AND POTENTIAL GUSTY
OUTFLOW WINDS ARE POSSIBLE OVER MUCH OF THE SOUTHERN AND EASTERN
AREAS OF THE FORECAST AREA. OUTSIDE OF STORMS...WINDS WILL REMAIN
UNDER 10 KTS EXCEPT IN THE OWENS VALLEY AND ESMERALDA COUNTY WHERE
WINDS GUSTING UP TO 25 KTS WILL BE POSSIBLE. SUNDAY THROUGH
WEDNESDAY THERE WILL BE THE POTENTIAL FOR SHRA/TSRA AT ANYTIME OF
THE DAY AS A MORE SIGNIFICANT INFLUX OF MOISTURE ARRIVES IN THE
AREA.
&&

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

GORELOW/PIERCE

FOR MORE FORECAST INFORMATION...SEE US ON OUR WEBPAGE:

HTTP://WEATHER.GOV/LASVEGAS OR FOLLOW US ON FACEBOOK AND TWITTER

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE LAS VEGAS NV
502 AM PDT FRI SEP 6 2013

AZZ001>003-036-CAZ519>527-NVZ014>022-071000-
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-
502 AM PDT FRI SEP 6 2013 /502 AM MST FRI SEP 6 2013/

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

.DAY ONE...TODAY AND TONIGHT

ISOLATED THUNDERSTORMS IN THE VALLEYS WILL BECOME MORE SCATTERED
OVER THE MOUNTAINS. HEAVY RAINFALL AND LOCALIZED FLASH FLOODING IS
POSSIBLE...ESPECIALLY AROUND OUR RECENT BURN AREAS.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY

CONFIDENCE CONTINUES TO GROW THAT THERE WILL BE AN INCREASE IN
THUNDERSTORM COVERAGE SUNDAY THROUGH THURSDAY AS ANOTHER INFLUX OF
TROPICAL MOISTURE MOVES NORTH INTO MOHAVE...CLARK...LINCOLN AND SAN
BERNARDINO COUNTIES. MOISTURE WILL EVENTUALLY MOVE FAR ENOUGH
NORTHWEST TO AFFECT INYO...NYE AND ESMERALDA COUNTIES TUESDAY
THROUGH THURSDAY. FOR THOSE LIVING NEAR RECENT BURN AREA STAY ALERT
AS HEAVY RAIN COULD LEAD TO FLASH FLOODING AND DEBRIS FLOWS.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME. HOWEVER...
SPOTTERS ARE ENCOURAGED TO REPORT ANY SIGNIFICANT WEATHER
CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.