Flash Flood Warning 269, NWS Las Vegas, NV

735 
WGUS75 KVEF 032152
FFSVEF

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LAS VEGAS NV
252 PM MST TUE SEP 3 2013

AZC015-032300-
/O.CON.KVEF.FF.W.0269.000000T0000Z-130903T2300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MOHAVE AZ-
252 PM MST TUE SEP 3 2013

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 400 PM MST FOR
CENTRAL MOHAVE COUNTY...

AT 246 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
INDICATE A THUNDERSTORM PRODUCING MODERATE TO HEAVY RAIN.  THIS 
STORM WAS LOCATED NEAR HUALAPAI MOUNTAIN PARK...OR 12 MILES 
SOUTHEAST OF KINGMAN. THE THUNDERSTORM WITH EXCESSIVE RAIN WAS 
NEARLY STATIONARY.

LOCATIONS IMPACTED INCLUDE...
DEAN PEAK BURN AREA...
DW RANCH ROAD...
BLAKE RANCH ROAD...
MAINLY RURAL AREAS OF CENTRAL MOHAVE COUNTY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

HEAVY RAINFALL IS FALLING ON THE DEAN PEAK BURN AREA. BECAUSE OF THE 
LACK OF VEGETATION...WATER LEVELS WILL RISE MUCH MORE RAPIDLY DURING 
FLASH FLOODS...LEADING TO AN INCREASED RISK OF MUD AND DEBRIS FLOWS 
IN AND DOWNSTREAM OF THIS BURN AREA.

&&

LAT...LON 3520 11399 3519 11383 3516 11376 3505 11376
      3504 11389

$$

WOLCOTT

715 
WGUS75 KVEF 032259
FFSVEF

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LAS VEGAS NV
359 PM MST TUE SEP 3 2013

AZC015-032308-
/O.EXP.KVEF.FF.W.0269.000000T0000Z-130903T2300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MOHAVE AZ-
359 PM MST TUE SEP 3 2013

...THE FLASH FLOOD WARNING WILL EXPIRE AT 400 PM MST FOR CENTRAL
MOHAVE COUNTY...

AT 322 PM...DW RANCH ROAD WAS REPORTED WASHED OUT BETWEEN MILE 
MARKERS 3 AND 5 NEAR THE DEAN PEAK BURN AREA. WATER MAY STILL BE 
FLOWING IN THE AREA BUT THE THREAT OF ADDITIONAL FLASH FLOODING HAS 
DIMINISHED. THEREFORE THE WARNING WILL BE ALLOWED TO EXPIRE ON TIME. 
PLEASE OBEY ALL BARRICADES IN THE AREA.

LAT...LON 3520 11399 3519 11383 3516 11376 3505 11376
      3504 11389

$$

WOLCOTT

AREA FORECAST DISCUSSION UPDATE
NATIONAL WEATHER SERVICE LAS VEGAS NV
1035 AM PDT TUE SEP 3 2013

.SYNOPSIS...MOISTURE IS EXPECTED TO REMAIN OVER MUCH OF THE REGION
LEADING TO ISOLATED THUNDERSTORMS THROUGH WEDNESDAY. A SLOW DRYING
TREND IS EXPECTED TOWARD THE END OF THE WEEK...WITH CHANCES FOR
SHOWERS AND THUNDERSTORMS GRADUALLY DECREASING. TEMPERATURES WILL BE
A FEW DEGREES ABOVE NORMAL IN MOST AREAS.
&&

.UPDATE...EXPECTING A SLOWER START FOR THUNDERSTORM DEVELOPMENT
TODAY...WITH LATEST SATELLITE IMAGERY SHOWING A BROAD AREA OF
SUBSIDENCE FOLLOWING THE REMNANTS OF KIKO PASSING UP ACROSS THE WEST
AND NORTH. IN THE ABSENCE OF ANY EXTRA FEATURE TO TRIGGER CONVECTION
TODAY...STORMS WILL TRIGGER THERMODYNAMICALLY AND INITIALLY FORM
OVER HIGHER TERRAIN. NO UPDATES WILL BE NEEDED THIS MORNING.
&&

.PREV DISCUSSION...
300 AM PDT TUE SEP 3 2013

.SHORT TERM...WEAK DISTURBANCE PUSHING UP THROUGH SOUTHERN NEVADA
AND NORTHWEST ARIZONA HAS ALLOWED FOR THE DEVELOPMENT AND
CONTINUATION OF SHOWERS AND THUNDERSTORMS. MAIN BATCH IS CURRENTLY
PUSHING NORTH THROUGH CLARK COUNTY AND SHOULD ALL BE INTO NORTHERN
CLARK AND LINCOLN COUNTIES BY SUNRISE. CONVECTION SHOULD BE A LITTLE
SLOWER TO DEVELOP OVER THE EASTERN HALF OF THE AREA SUCH AS
CLARK...EASTERN SAN BERNARDINO...AND MOHAVE COUNTIES DUE TO MORE
NEGATIVE VORTICITY MOVING INTO THE REGION BEHIND THIS DISTURBANCE.
STILL THINK ISOLATED THUNDERSTORMS WILL DEVELOP...BUT MORE SO IN THE
LATER AFTERNOON. OVER THE WESTERN HALF OF THE AREA...CONVECTION
SHOULD START EARLIER...BUT ITS ALSO DEPENDENT ON HOW MUCH SUN IS
AVAILABLE EARLY. WITH THIS IN MIND AND THINK STORMS WILL BE A LITTLE
MORE ISOLATED THAN YESTERDAY HAVE HELD OFF ON ANY FLASH FLOOD
WATCHES. WITH PLENTY OF MOISTURE STILL AVAILABLE ANY STORM WILL BE
CAPABLE OF PRODUCING FLASH FLOODING. NOT REALLY MUCH CHANGE GOING
INTO WEDNESDAY ALTHOUGH MOISTURE SHOULD BE ON THE DECREASE.
HOWEVER...MODELS STILL INDICATE SOME INSTABILITY AREA WIDE AND WILL
KEEP AT LEAST SLIGHT CHANCES OF STORMS ACROSS THE ENTIRE AREA.
TEMPERATURES WILL REMAIN CLOSE TO NORMAL.

.LONG TERM...THURSDAY THROUGH MONDAY...MADE LITTLE CHANGE TO THE
THU-MON PERIODS. MOISTURE PRESENTLY ACROSS THE AREA WILL CONTINUE TO
BE RECYCLED WITH A DIURNAL CYCLE IN CONVECTION THURSDAY AND FRIDAY.
KEPT THAT TREND GOING THROUGH THE WEEKEND BUT THE 00Z ECMWF THREW A
CURVE BALL INTO THAT THINKING. AN AREA OF DISORGANIZED SHOWERS AND
THUNDERSTORMS OFF THE SOUTHWEST COAST OF MEXICO HAS A GOOD CHANCE OF
DEVELOPING INTO A TROPICAL CYCLONE OVER THE COMING DAYS BASED ON THE
NATIONAL HURRICANE CENTER OUTLOOK. THE 00Z ECMWF BRINGS THIS
TROPICAL SYSTEM NORTHWARD INTO THE LOWER GULF OF CALIFORNIA FRIDAY
AND REMNANTS OF THE SYSTEM AS FAR NORTH AS THE LOWER COLORADO RIVER
VALLEY BY NEXT MONDAY. GEM/GFS DIFFER CONSIDERABLY. AGAIN...JUST
SOMETHING TO MONITOR THE NEXT FEW DAYS. IF THE ECMWF DOES PAN OUT
EXPECT ANOTHER SHOT OF TROPICAL MOISTURE INTO THE AREA WHICH WOULD
JUST REINFORCE THE MOISTURE ALREADY IN PLACE.

.AVIATION...FOR MCCARRAN...ISOLATED SHOWERS AND THUNDERSTORMS
EXPECTED THROUGH SUNRISE BEFORE ENDING AND CLEARING THIS MORNING.
ISOLATED THUNDERSTORMS WILL AGAIN BE POSSIBLE LATE THIS AFTERNOON
AND EVENING AS PLENTY OF MOISTURE REMAINS IN PLACE. WINDS WILL
GENERALLY FOLLOW NORMAL DIURNAL PATTERNS...EXCEPT OUTFLOW BOUNDARIES
FROM THUNDERSTORMS COULD BRING PERIODS OF GUSTY AND SHIFTING WINDS.

FOR THE REST OF SOUTHERN NEVADA...NORTHWEST ARIZONA...AND SOUTHEAST
CALIFORNIA...CHANCES FOR THUNDERSTORMS WILL CONTINUE AREAWIDE
THROUGH TUESDAY...THEN DECREASE FROM THE WEST BEGINNING ON
WEDNESDAY. WINDS WILL GENERALLY FOLLOW NORMAL DIURNAL
PATTERNS...EXCEPT OUTFLOW BOUNDARIES FROM THUNDERSTORMS COULD BRING
PERIODS OF GUSTY AND SHIFTING WINDS.
&&

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

UPDATE...KENNEDY
PREV DISCUSSION...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
404 AM PDT TUE SEP 3 2013

AZZ001>003-036-CAZ519>527-NVZ014>022-041000-
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-
404 AM PDT TUE SEP 3 2013 /404 AM MST TUE SEP 3 2013/

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

.DAY ONE...TODAY AND TONIGHT

HEAVY RAIN REMAINS THE CONCERN FROM ISOLATED TO SCATTERED SHOWERS
AND THUNDERSTORMS. TURN AROUND DONT DROWN IF YOU ENCOUNTER A FLOODED
ROADWAY.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

ISOLATED TO SCATTERED SHOWERS AND THUNDERSTORMS ARE POSSIBLE AS A
MOIST AND UNSTABLE AIR MASS REMAINS OVER THE AREA. HEAVY RAINFALL
AND LOCALIZED FLASH FLOODING IS POSSIBLE MAINLY OVER CLARK...MOHAVE
AND SAN BERNARDINO COUNTIES.

.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.