Flash Flood Warning 100, NWS Las Vegas, NV

302 
WGUS75 KVEF 162133
FFSVEF

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LAS VEGAS NV
233 PM PDT FRI SEP 16 2011

NVC003-162300-
/O.CON.KVEF.FF.W.0100.000000T0000Z-110916T2300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CLARK NV-
233 PM PDT FRI SEP 16 2011

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 400 PM PDT FOR
CENTRAL CLARK COUNTY...

AT 229 PM PDT...LOCAL LAW ENFORCEMENT OFFICIALS REPORTED FLASH 
FLOODING ON MULTIPLE STREETS WITHIN BOULDER CITY. THE MOST 
SIGNIFICANT RUNOFF WAS OCCURRING ON HIGHWAY 93 NEAR THE BUCHANAN 
INTERSECTION. WHILE THE HEAVIEST RAINFALL HAS ENDED SIGNIFICANT 
RUNOFF REMAINS LIKELY.

LOCATIONS IMPACTED INCLUDE...BOULDER CITY...AND HIGHWAY 93 FROM MILE 
MARKER 4 TO RAILROAD PASS...AND HIGHWAY 95 FROM MILE MARKER 53 TO 57.

LAT...LON 3601 11483 3601 11479 3596 11477 3593 11492
      3596 11492

$$

JGG

540 
WGUS75 KVEF 162209
FFSVEF

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LAS VEGAS NV
309 PM PDT FRI SEP 16 2011

NVC003-162217-
/O.CAN.KVEF.FF.W.0100.000000T0000Z-110916T2300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CLARK NV-
309 PM PDT FRI SEP 16 2011

...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR CENTRAL CLARK
COUNTY...

RAINFALL HAS ENDED IN THE AREA AND LOCAL LAW ENFORCEMENT REPORTS 
WATER LEVELS HAVE SUBSIDED IN BOULDER CITY. HOWEVER...AREAS OF 
STANDING WATER AND PONDING ON AREA ROADWAYS WILL REMAIN POSSIBLE 
THROUGH THE AFTERNOON.

LAT...LON 3601 11483 3601 11479 3596 11477 3593 11492
      3596 11492

$$

JGG

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAS VEGAS NV
158 PM PDT FRI SEP 16 2011

.SYNOPSIS...ISOLD TO SCATTERED THUNDERSTORMS WILL CONTINUE IN
SOUTHERN NEVADA AND NORTHERN ARIZONA INTO THE EVENING. THIS SHOULD
BE THE LAST DAY FOR THUNDERSTORMS THROUGH AT LEAST NEXT WEEK. DRIER
AIR WILL BEING TO MOVE IN THIS WEEKEND TO BRING WARMER BUT STILL
BELOW NORMAL TEMPERATURES. TEMPERATURES WILL WARM UP TOR ABOVE
NORMAL .
&&

.SHORT TERM...THE TROUGH IS MOVING THROUGH THE CWA NOW PRETTY MUCH
AS THE NAM12 PREDICTED. THUNDERSTORMS HAVE FORMED AHEAD OF THE DRY
AIR THAT IS EVIDENT IN SURFACE DEWPOINTS IN THE WESTERN ZONES AND IN
SATELLITE IMAGERY. EVEN A SEVERE STORM POPPED UP SOUTH OF LAS VEGAS.
WITH THE SPEED OF THE TROUGH EXPECT THE THUNDERSTORMS TO DEPART THE
AREA THIS EVENING. DRIER AIR WILL CONTINUE TO SPREAD INTO THE REST
OF THE CWA THIS EVENING AND TONIGHT. THIS WILL LEAD TO LESS SKY
COVER AND WARMING THIS WEEKEND. TEMPERATURES WILL SLOWLY WARM AND
ALONG WITH GUIDANCE KEPT THEM PRETTY MUCH AS INHERITED AND BELOW
NORMAL VALUES.

.LONG TERM...THE GENERIC WEATHER SETUP BEGINNING TUESDAY OF NEXT
WEEK FEATURES A PERIOD DOMINATED BY HIGH PRESSURE. HOWEVER...MODELS
HAVE INTRODUCED AN EMBEDDED UPPER DISTURBANCE THAT IS TREATED
DIFFERENTLY DEPENDING ON THE MODEL. THE GFS IS THE MOST PRONOUNCED
WITH THIS FEATURE BRINGING IT SOUTH ALONG THE NEVADA AND UTAH BORDER
ON TUESDAY AND EVENTUALLY SOUTH OF THE FORECAST AREA BY THURSDAY.
MEANWHILE...HIGH PRESSURE REBOUNDS AND STRENGTHENS OVER THE GREAT
BASIN. VERY LITTLE MOISTURE IS ASSOCIATED WITH THE DISTURBANCE AND
THE MAIN IMPACTS...AS IT IS CURRENTLY FORECAST BY THE GFS...WOULD BE
SLIGHTLY LOWER TEMPERATURES AND A MODIFIED WIND SPEED AND DIRECTION
THAN WHAT IS CURRENTLY FORECAST. DECIDED TO MAKE ONLY SMALL CHANGES
TO THE INHERITED FORECAST MAINTAINING MOSTLY CLEAR CONDITIONS WITH
TEMPERATURES WARMING TO A FEW DEGREES ABOVE NORMAL BY TUESDAY.
&&

.AVIATION...FOR MCCARRAN...SOUTHWEST WINDS FROM 12-18KTS WITH GUSTS
UP TO 25KTS TO CONTINUE INTO THE EVENING. FEW-SCT CLOUD COVER THIS
AFTERNOON WITH BASES AROUND 10-11K FEET. ISOLATED THUNDERSTORMS ARE
POSSIBLE THROUGH THE AFTERNOON HOURS BUT WILL END THIS EVENING AS
SKIES CLEAR. SUNNY AND DRY CONDITIONS ARE EXPECTED OVER THE WEEKEND
WITH WINDS GENERALLY UNDER 10KTS.

FOR THE REST OF SOUTHERN NEVADA...NORTHWEST ARIZONA...AND SOUTHEAST
CALIFORNIA...MAINLY FEW-SCT CLOUDS AOA 10K FEET ACROSS THE AREA THIS
AFTERNOON EXCEPT AREAS OF BKN CLOUD COVER WHERE THUNDERSTORMS
DEVELOP. BEST THUNDERSTORM CHANCES CONTINUE TO BE IN LINCOLN AND
NORTHERN MOHAVE COUNTIES WITH ISOLATED STORMS IN CLARK COUNTY.
SOUTHWEST WINDS GENERALLY 12-22KTS WITH HIGHER GUSTS DIMINISHING TO
AROUND 10KTS OVER THE WEEKEND.
&&

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

JACQUES/SALMEN

HTTP://WEATHER.GOV/LASVEGAS

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE LAS VEGAS NV
143 AM PDT FRI SEP 16 2011

AZZ001>003-036-CAZ519>527-NVZ014>022-170700-
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-
143 AM PDT FRI SEP 16 2011 /143 AM MST FRI SEP 16 2011/

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

.DAY ONE...TODAY AND TONIGHT

ISOLATED TO SCATTERED THUNDERSTORMS ARE EXPECTED OVER SOUTHERN
NEVADA AND NORTHWEST ARIZONA AGAIN TODAY. THERE IS A LOW RISK OF
ISOLATED SEVERE WEATHER AND FLASH FLOODING...MAINLY NORTH OF LAS
VEGAS.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

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

MORGAN