Wind Advisory 5, NWS Las Vegas, NV

014 
WWUS75 KVEF 222221
NPWVEF

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE LAS VEGAS NV
221 PM PST MON FEB 22 2010

AZZ002-036-CAZ527-NVZ021-222330-
/O.CAN.KVEF.WI.Y.0005.000000T0000Z-100223T0600Z/
LAKE HAVASU AND FORT MOHAVE-LAKE MEAD NATIONAL RECREATION AREA-
SAN BERNARDINO COUNTY-UPPER COLORADO RIVER VALLEY-
INCLUDING THE CITIES OF...LAUGHLIN...BULLHEAD CITY
221 PM PST MON FEB 22 2010 /321 PM MST MON FEB 22 2010/

...WIND ADVISORY IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN LAS VEGAS HAS CANCELLED THE WIND
ADVISORY FOR THE LAKE MEAD NATIONAL RECREATION AREA AND THE LOWER
COLORADO RIVER VALLEY.

PERSISTENT NORTH WIND GUSTS IN EXCESS OF 40 MPH HAVE NOT
MATERIALIZED AT REPORTING STATIONS WITHIN THE COLORADO RIVER VALLEY
TODAY. NORTH WINDS OF 20 TO 30 MPH WITH GUST AROUND 35 MPH WILL
OCCUR THE REST OF THIS AFTERNOON.

NORTH WINDS OF 10 TO 20 MPH ARE FORECAST TONIGHT.

$$

PIERCE

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAS VEGAS NV
315 AM PST MON FEB 22 2010

.SYNOPSIS...AN UPPER LEVEL DISTURBANCE AND ASSOCIATED COLD FRONT
WILL CONTINUE TO MOVE SOUTHEAST THROUGH THE AREA TODAY. AN AREA OF
RAIN AND SNOW SHOWERS WILL EXIT SOUTHERN NEVADA AND SOUTHEAST
CALIFORNIA INTO NORTHWEST ARIZONA THIS MORNING. GUSTY NORTH WINDS
CAN BE EXPECTED TO DEVELOP BEHIND THE FRONT TODAY...ESPECIALLY DOWN
THE COLORADO RIVER VALLEY. AFTER A BREAK IN THE WEATHER UNDER HIGH
PRESSURE TUESDAY...ANOTHER STORM SYSTEM WILL BRING A CHANCE OF RAIN
AND SNOW TO THE AREA WEDNESDAY INTO WEDNESDAY NIGHT. TEMPERATURES
WILL REMAIN BELOW NORMAL THROUGH WEDNESDAY.
&&

.SHORT TERM...MODELS DOING A PRETTY GOOD JOB DEPICTING THE AREA OF
RAIN AND SNOW ACROSS THE SOUTHERN HALF OF THE FORECAST AREA
ASSOCIATED WITH AN UPPER TROUGH AND COLD FRONT. THIS AREA OF SHOWERS
WILL MOVE EAST AND SOUTHEAST OF THE AREA THROUGH THE DAY AND WILL
MOSTLY BE OUT OF EVEN MOHAVE COUNTY BY 4 PM. STILL A THREAT FOR SOME
MODERATE SNOW ACROSS THE SPRING MOUNTAINS AND SHEEP RANGE AND HIGHER
ELEVATIONS OF THE NORTHWEST PLATEAU OF ARIZONA SO KEEPING ADVISORY
IN EFFECT FOR NOW. STRONG NORTH WINDS WILL DEVELOP BEHIND THE
FRONT...ESPECIALLY DOWN THE COLORADO RIVER VALLEY AND ISSUED A WIND
ADVISORY FROM 10 AM TO 10 PM. SHORTWAVE RIDGE WILL MOVE OVER THE
AREA TONIGHT AND TUESDAY WITH DRY CONDITIONS...ALTHOUGH HIGH CLOUDS
WILL MOVE IN FAIRLY QUICKLY AHEAD OF THE NEXT SYSTEM. THIS NEXT
TROUGH WILL SPREAD PRECIPITATION CHANCES INTO THE SIERRA LATE
TUESDAY NIGHT AND ACROSS MAINLY THE NORTHERN HALF OF THE AREA
WEDNESDAY. MOST ZONES WILL SEE A CHANCE OF PRECIPITATION WEDNESDAY
NIGHT AS THE TROUGH AXIS SWINGS THROUGH. AT THIS TIME PRECIPITATION
AMOUNTS DO NO LOOK VERY IMPRESSIVE BUT MODELS DO GENERATE ONE TO TWO
TENTHS OF AN INCH IN SOME AREAS. TEMPERATURES WILL REMAIN BELOW
NORMAL THROUGH WEDNESDAY.

.LONG TERM...BY THURSDAY MORNING...LINGERING SHOWERS ACROSS EASTERN
LINCOLN AND MOHAVE COUNTIES WILL HAVE DISSIPATED BY THE AFTERNOON AS
RIDGING BUILDS OVER THE AREA. THE BREAK IN THE WEATHER WILL BE BRIEF
HOWEVER AS THE NEXT MAJOR SYSTEM BEGINS TO IMPACT THE REGION BY
FRIDAY AFTERNOON ACROSS THE SOUTHERN SIERRA...WITH PRECIP SPREADING
EAST OVER THE REST OF THE AREA LATE FRIDAY NIGHT AND SATURDAY. MODEL
CONTINUITY REMAINS GOOD WITH NEXT WEEKENDS SYSTEM...WITH ONE AND A
QUARTER INCH OF QPF FORECAST IN THE SIERRA AND BETWEEN .25 AND .75
INCHES WITH LOCALLY HIGHER AMOUNTS ELSEWHERE BY SUNDAY MORNING.
OPTED TO UNDERCUT TEMPERATURE GUIDANCE ON SATURDAY WITH EXTENSIVE
CLOUD COVER AND PRECIP EXPECTED. SNOW LEVELS LOOK TO BE AROUND 4500
AND 6000 FEET WITH THE WEEKEND SYSTEM.  CONDITIONS WILL BEGIN TO
IMPROVE SUNDAY...AND CONTINUE THE TREND INTO THE BEGINNING OF NEXT
WEEK.
&&

.AVIATION...FOR MCCARRAN...SHOWERS WILL BEGIN TO DIMINISH STARTING
AROUND 14Z...AT WHICH TIME CIGS SHOULD RISE TO ABOVE MVFR
CONDITIONS. BY 17Z...THE PROBABILITY OF ANY ADDITIONAL RAIN WILL BE
BELOW 20 PERCENT AT KLAS. CLOUD COVER WILL QUICKLY DIMINISH AS DRY
NORTHERLY FLOW SETS IN AT ALL LEVELS...LEAVING STRONG NORTHERLY
SURFACE WINDS AS THE MAIN FORECAST CHALLENGE OF THE DAY..WITH WIND
GUSTS UP TO 30KTS POSSIBLE THIS AFTERNOON. WIND SPEEDS WILL
DIMINISH DURING THE EVENING.

FOR THE REST OF SOUTHERN NEVADA...NORTHWEST ARIZONA...AND SOUTHEAST
CALIFORNIA...SHOWERS ACROSS CLARK...LINCOLN...AND MOHAVE COUNTIES
WILL DIMINISH BY EARLY AFTERNOON...AS RIDGING BUILDS IN FROM THE
WEST. STRONG NORTHERLY WINDS ARE EXPECTED AREA WIDE TODAY...WITH
GUSTS OVER 35 KTS POSSIBLE.

.VEF WATCHES/WARNINGS/ADVISORIES...
NV...WINTER WEATHER ADVISORY UNTIL 10 AM PST THIS MORNING FOR NVZ018-
     019.
     WIND ADVISORY FROM 10 AM THIS MORNING TO 10 PM PST THIS EVENING
     FOR NVZ021.
AZ...WINTER WEATHER ADVISORY UNTIL 11 AM MST THIS MORNING FOR AZZ001.
     WIND ADVISORY FROM 11 AM THIS MORNING TO 11 PM MST THIS EVENING
     FOR AZZ002-036.
CA...WIND ADVISORY FROM 10 AM THIS MORNING TO 10 PM PST THIS EVENING
     FOR CAZ527.
&&

HARRISON/KENNEDY

HTTP://WEATHER.GOV/LASVEGAS

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE LAS VEGAS NV
1036 AM PST SUN FEB 21 2010

AZZ002-003-036-CAZ519>522-524>527-NVZ014>017-020>022-220900-
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-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-
LAS VEGAS VALLEY-SOUTHERN CLARK COUNTY-
1036 AM PST SUN FEB 21 2010 /1136 AM MST SUN FEB 21 2010/

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

.DAY ONE...TODAY AND TONIGHT

A LOW PRESSURE SYSTEM WILL REMAIN OVER THE DISTRICT THROUGH
TONIGHT WHICH WILL ALLOW FOR GUSTY WINDS AND SCATTERED SHOWERS
ACROSS MAINLY THE CENTRAL NEVADA MOUNTAINS.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. HOWEVER THE LOW
PRESSURE SYSTEM WILL BE MOVING ACROSS THE DISTRICT ON MONDAY
RESULTING IN SCATTERED RAIN AND SNOW SHOWERS ALONG WITH LOCAL
GUSTY NORTH WINDS. DRY CONDITIONS ARE EXPECTED ON TUESDAY...BUT A
MOIST FLOW WILL CONTINUE TO KEEP ISOLATED SHOWERS OVER THE
SOUTHERN SIERRA AND THE CENTRAL NEVADA MOUNTAINS FOR WEDNESDAY AND
THURSDAY. ANOTHER PACIFIC STORM IS THEN EXPECTED TO SPREAD SHOWERS
ACROSS MUCH OF THE REGION FRIDAY AND SATURDAY.

.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.

CAZ523-220900-
WESTERN MOJAVE DESERT-
1036 AM PST SUN FEB 21 2010

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CALIFORNIA.

.DAY ONE...TODAY AND TONIGHT

A STORM SYSTEM WILL BRING STRONG AND GUSTY WINDS TO THE AREA TODAY
BEFORE DECREASING LATE THIS AFTERNOON AND INTO THIS EVENING. THIS
HAS PROMPTED THE ISSUANCE OF A WIND ADVISORY FOR THE WESTERN
MOJAVE DESERT. A CHANCE FOR RAIN SHOWERS WILL THEN SPREAD OVER THE
AREA DURING THE NIGHT AS THE STORM BEGINS TO MOVE EAST.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. HOWEVER SCATTERED
SHOWERS WILL BE SEEN MONDAY MORNING AS THE STORM CONTINUES TO MOVE
OUT OF THE AREA...THEN DRYING WILL TAKE PLACE MONDAY NIGHT AND
TUESDAY. DRY CONDITIONS ARE THEN EXPECTED THROUGH THE MIDDLE OF
THE WEEK BEFORE ANOTHER PACIFIC STORM BRINGS A CHANCE OF SHOWERS
ONCE AGAIN TO THE REGION FRIDAY AND SATURDAY.

.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.

AZZ001-NVZ018-019-220900-
NORTHWEST PLATEAU-SHEEP RANGE-SPRING MOUNTAINS-
1036 AM PST SUN FEB 21 2010 /1136 AM MST SUN FEB 21 2010/

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

.DAY ONE...TODAY AND TONIGHT

AN AREA OF LOW PRESSURE MOVING THROUGH SOUTHERN NEVADA AND
NORTHWEST ARIZONA TONIGHT WILL LEAD TO SNOW...POSSIBLY HEAVY AT
TIMES IN THE MOUNTAINS.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY

SNOW...POSSIBLY HEAVY AT TIMES WILL CONTINUE THROUGH THE MORNING
HOURS MONDAY BEFORE TAPERING OFF AROUND NOON. DRY CONDITIONS ARE
THEN EXPECTED THROUGH THE MIDDLE OF THE WEEK BEFORE ANOTHER
PACIFIC STORM BRINGS A CHANCE OF SHOWERS ONCE AGAIN TO THE REGION
FRIDAY AND SATURDAY.

.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.