Severe Thunderstorm Warning 152, NWS Las Vegas, NV

547 
WWUS55 KVEF 232352
SVSVEF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LAS VEGAS NV
452 PM PDT FRI SEP 23 2011

CAC071-240015-
/O.CON.KVEF.SV.W.0152.000000T0000Z-110924T0015Z/
SAN BERNARDINO CA-
452 PM PDT FRI SEP 23 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 515 PM PDT
FOR EXTREME WEST CENTRAL SAN BERNARDINO COUNTY...

AT 450 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN
EXCESS OF 60 MPH.  THIS STORM WAS LOCATED OVER EXTREME WEST CENTRAL
SAN BERNARDINO COUNTY...OR 28 MILES WEST OF BARSTOW...AND WAS MOVING
NORTHWEST AT 20 MPH.

LOCATIONS IMPACTED INCLUDE...KRAMER JUNCTION AND 
MAINLY RURAL AREAS OF EXTREME WESTERN SAN BERNARDINO COUNTY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS STORM IS CAPABLE OF PRODUCING DAMAGING WINDS WHICH CAN BRING
DOWN TREES AND POWER LINES AND CAUSE SIGNIFICANT BLOWING DUST AND 
DEBRIS. TAKE COVER IN A SUBSTANTIAL SHELTER AND STAY AWAY FROM 
WINDOWS UNTIL THE STORM PASSES.

REPORT SEVERE WEATHER BY POSTING YOUR REPORT TO THE LAS VEGAS
NATIONAL WEATHER SERVICE FACEBOOK PAGE OR TWITTER #NWSVEGAS.

&&

LAT...LON 3494 11740 3486 11760 3493 11764 3494 11765
      3509 11765 3513 11749
TIME...MOT...LOC 2351Z 154DEG 18KT 3498 11755

$$

PIERCE

927 
WWUS55 KVEF 240012
SVSVEF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LAS VEGAS NV
512 PM PDT FRI SEP 23 2011

CAC071-240019-
/O.EXP.KVEF.SV.W.0152.000000T0000Z-110924T0015Z/
SAN BERNARDINO CA-
512 PM PDT FRI SEP 23 2011

...THE SEVERE THUNDERSTORM WARNING FOR EXTREME WEST CENTRAL SAN
BERNARDINO COUNTY WILL EXPIRE AT 515 PM PDT...

STRONG WINDS FROM THUNDERSTORMS AROUND KRAMER JUNCTION HAVE 
WEAKENED. THE SEVERE THUNDERSTORM WARNING WILL BE ALLOWED TO EXPIRE.

THE PUBLIC REPORTED REDUCED VISIBILITIES IN BLOWING DUST IN THE 
AREA. ONE PERSON AT THE CHEVRON STATION IN KRAMER JUNCTION ALSO 
REPORTED POWER FLUCTUATIONS DUE TO THE STRONG WINDS.

LAT...LON 3494 11740 3486 11760 3493 11764 3494 11765
      3509 11765 3513 11749
TIME...MOT...LOC 0009Z 154DEG 18KT 3506 11760

$$

PIERCE

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAS VEGAS NV
238 PM PDT FRI SEP 23 2011

.SYNOPSIS...AN UPPER LOW NEAR THE SOUTHERN CALIFORNIA COAST WILL
MOVE SLOWLY INLAND TONIGHT AND SATURDAY. CLOUDS WILL INCREASE AND
MOST OF THE AREA WILL SEE A CHANCE OF SHOWERS AND THUNDERSTORMS BY
SATURDAY AFTERNOON. THE MAIN THREAT FROM THESE THUNDERSTORMS WILL BE
GUSTY WINDS. DRY SOUTHWEST FLOW IS EXPECTED SUNDAY WITH HIGH
PRESSURE THEN BUILDING OVER THE AREA EARLY NEXT WEEK.
&&

.SHORT TERM...THE UPPER LOW OFF THE SOUTHERN CALIFORNIA COAST WAS
GENERATING SOME SHOWERS AND THUNDERSTORMS JUST INLAND THIS AFTERNOON
WITH SOME CUMULUS DEVELOPMENT OVER OUR FORECAST AREA. FAR WESTERN
PORTIONS OF INYO AND SAN BERNARDINO COUNTIES COULD STILL SEE
ISOLATED THUNDERSTORMS THIS AFTERNOON WITH A CHANCE OF SHOWERS AND
THUNDERSTORMS SPREADING A LITTLE FARTHER NORTHEAST TONIGHT. THE LOW
WILL WEAKEN AND MOVE INLAND LATER TONIGHT AND SATURDAY BRINGING
INCREASING CLOUDS TO THE AREA WITH MOST LOCATION SEEING A CHANCE OF
THUNDERSTORMS BY SATURDAY AFTERNOON. MODEL FORECAST SOUNDINGS ARE
INDICATING A PRONOUNCED INVERTED V SIGNATURE WHICH MEANS
THUNDERSTORMS SATURDAY ARE NOT LIKELY TO PRODUCE ALOT OF RAIN BUT
WILL HAVE THE POTENTIAL FOR PRODUCING WIND GUSTS OVER 50 MPH. THE
UPPER LOW WILL CONTINUE TO WEAKEN AND MOVE NORTHEAST SATURDAY NIGHT
WITH PRECIPITATION CHANCES ENDING AFTER SOME LINGERING EVENING
SHOWERS AND THUNDERSTORMS. A DRY SOUTHWEST FLOW IS EXPECTED SUNDAY
WITH LOCALLY BREEZY CONDITIONS...THEN RIDGING BEGINS TO DEVELOP OVER
THE AREA MONDAY. TEMPERATURES WILL REMAIN WELL ABOVE NORMAL SATURDAY
BUT WILL DROP TO CLOSER TO NORMAL BEHIND THE TROUGH SUNDAY AND
MONDAY...BUT STILL A LITTLE ABOVE NORMAL.

.LONG TERM...TUESDAY THROUGH FRIDAY...HIGH PRESSURE OVER THE AREA
TUESDAY THROUGH THURSDAY WILL BRING ABOVE NORMAL TEMPERATURES AND
MOSTLY CLEAR SKIES. A WEAK LOW PRESSURE OVER NORTHERN MEXICO IS
FORECAST TO WEAKEN FROM THE INFLUENCE OF THE HIGH AND MOVE EAST AND
REALLY SHOULD HAVE NO EFFECT ON OUR WEATHER. BIGGEST ITEM TO WATCH
IS STILL TROPICAL SYSTEM HILARY AND WHAT HER TRACK IS GOING TO DO.
THE MODELS ARE STILL NOT IN REAL GOOD AGREEMENT BEYOND THURSDAY AS
THE GFS KEEPS THE HIGH IN PLACE AND HILARY EVENTUALLY GETS PUSH WEST
FURTHER INTO THE PACIFIC. THE 12Z ECMWF ALSO KEEPS HILARY FURTHER
SOUTH THAN PREVIOUS RUNS...BUT ALSO SHOWS A DEEPENING TROUGH OFF THE
WEST COAST WHICH PUSHES THE HIGH EAST AND BRINGS MORE UNSETTLED
WEATHER. SINCE THE PERIOD BEYOND FRIDAY IS OUT OF THE FORECAST
RANGE...DID NOT MAKE ANY CHANGES AND KEPT EVERYTHING DRY. &&

.AVIATION...FOR MCCARRAN...FEW CLOUDS AROUND 13-15K FEET THROUGH
MUCH OF TONIGHT. WINDS GENERALLY VARIABLE 8KTS OR LESS AND WILL TURN
MORE TOWARD THE SOUTH TO SOUTHWEST AFTER SUNSET. CLOUDS AND
THUNDERSTORM CHANCES WILL INCREASE SATURDAY AHEAD OF A LOW PRESSURE
SYSTEM OFF THE SOUTHERN CALIFORNIA COAST. BIGGEST CONCERN WITH
THUNDERSTORMS ON SATURDAY WILL BE GUSTY WINDS. GUSTS OVER 40 MPH
WILL BE POSSIBLE IN THE VICINITY OF ANY STORM.

FOR THE REST OF SOUTHERN NEVADA...NORTHWEST ARIZONA...AND SOUTHEAST
CALIFORNIA...A SCT-BKN CLOUDS AOA 12K FEET ALONG WITH ISOLATED
THUNDERSTORMS THIS AFTERNOON OVER WESTERN SAN BERNARDINO COUNTY.
INCREASING CLOUDS AND THUNDERSTORM CHANCES WILL OCCUR LATE TONIGHT
AND SATURDAY AS AN AREA OF LOW PRESSURE MOVES INLAND. MAIN CONCERN
FROM THUNDERSTORMS WILL BE GUSTY WINDS AND GUSTS OVER 40 MPH WILL BE
POSSIBLE WITH ANY STORM.
&&

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

HARRISON/GORELOW

HTTP://WEATHER.GOV/LASVEGAS

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE LAS VEGAS NV
501 AM PDT FRI SEP 23 2011

AZZ001>003-036-CAZ519>527-NVZ014>022-240700-
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-
501 AM PDT FRI SEP 23 2011 /501 AM MST FRI SEP 23 2011/

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

.DAY ONE...TODAY AND TONIGHT

THE CHANCE FOR THUNDERSTORMS WILL INCREASE ACROSS THE WESTERN
MOJAVE DESERT AND SOUTHERN SIERRA DURING THE LATE AFTERNOON THEN
THE POTENTIAL FOR THUNDERSTORMS WILL SHIFT ACROSS CENTRAL AND
EASTERN SAN BERNARDINO COUNTIES THROUGH THE OVERNIGHT HOURS AS A LOW
PRESSURE SYSTEM ALONG THE SOUTHERN CALIFORNIA COAST BEGINS TO MOVE
INLAND.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY

A SLIGHT CHANCE OF THUNDERSTORMS WILL EXIST FOR MUCH OF THE
FORECAST AREA SATURDAY THOUGH THE BEST POTENTIAL FOR THUNDERSTORMS
WILL REMAIN PRIMARILY SOUTH OF INTERSTATE 15. MOISTURE WILL BE
SOMEWHAT LIMITED AND THE MAIN THREAT ASSOCIATED WITH THESE STORMS
WILL BE STRONG WIND GUSTS WITH A LESSER THREAT OF BRIEF HEAVY RAIN
AND HAIL. DRY WEATHER IS EXPECTED SUNDAY THROUGH THURSDAY.

.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.

JA