Area Forecast Discussion
Issued by NWS Las Vegas, NV

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000
FXUS65 KVEF 222306
AFDVEF

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAS VEGAS NV
305 PM PST SAT NOV 22 2014

.SYNOPSIS...A COLD FRONT PUSHING SOUTH ACROSS THE REGION TONIGHT
WILL BRING COOLER AND WINDY CONDITIONS SUNDAY WITH THE STRONGEST
WINDS ALONG THE COLORADO RIVER VALLEY FROM LAKE MOHAVE TO LAKE
HAVASU. AN AREA OF HIGH PRESSURE SETTING UP OVER THE REGION EARLY IN
THE COMING WEEK WILL BRING TRANQUIL WEATHER WITH TEMPERATURES
CLIMBING A LITTLE ABOVE NORMAL TROUGH THANKSGIVING DAY AND
THE FOLLOWING WEEKEND.
&&

.SHORT TERM...TONIGHT THROUGH MONDAY NIGHT...SOUTHWEST WINDS HAVE
INCREASED ACROSS THE MOJAVE DESERT AHEAD OF A COLD FRONT THAT WILL
SWEEP DOWN THROUGH THE GREAT BASIN AND SOUTHERN NEVADA OVERNIGHT.
GUSTS OVER 50 MPH DEVELOPED AT THE BARSTOW-DAGGETT AIRPORT AROUND
22Z AND A WIND ADVISORY WAS ISSUED FOR THE WESTERN MOJAVE DESERT
THROUGH 3 AM SUNDAY. ELSEWHERE GUSTS OF 20-30 MPH WERE COMMON.
ISOLATED SHOWERS MAY BRUSH NORTHERN LINCOLN COUNTY THIS EVENING BUT
THE MAIN STORY WILL BE GUSTY NORTHWEST TO NORTH WINDS DEVELOPING AS
THE FRONT PUSHES DOWN THROUGH SOUTHERN NEVADA AND SURROUNDING AREAS
OVERNIGHT. THE LATEST HIGH RES MODELS STILL INDICATE THE FRONT WILL
MOVE THROUGH THE LAS VEGAS AREA AROUND MIDNIGHT LOCAL TIME THEN DOWN
THROUGH SOUTHEAST SAN BERNARDINO/SOUTHERN MOHAVE COUNTIES BY 12Z
SUNDAY. BRIEF GUSTS AROUND 40 MPH MAY OCCUR IMMEDIATELY FOLLOWING
THE FRONT FOR SOME AREAS. NORTH WINDS DOWN THE COLORADO RIVER VALLEY
WILL BE STRONGEST FROM COTTONWOOD COVE ON LAKE MOHAVE DOWN TO LAKE
HAVASU WITH THE MAXIMA NEAR LAUGHLIN-BULLHEAD CITY...AS USUAL. A
LAKE WIND ADVISORY WAS ISSUED FROM 9 AM TO 4 PM SUNDAY. WIND SPEEDS
WILL DECREASE SUNDAY NIGHT BUT NORTH BREEZES OF 10-20 MPH WILL
PERSIST MONDAY WITH GUSTS AROUND 30 MPH NEAR LAUGHLIN-BULLHEAD CITY.
TEMPS WILL DROP AROUND 10 DEGREES SUNDAY WITH LITTLE CHANGE MONDAY.

.LONG TERM...TUESDAY THROUGH FRIDAY...WEATHER WILL HAVE NO IMPACT
ON HOLIDAY TRAVEL PLANS FOR THOSE HEADING IN AND OUT OF VEGAS.
STRONG RIDGE ALONG THE WEST COAST TUESDAY PROGGED TO SHIFT INLAND
ACROSS THE GREAT BASIN WEDNESDAY AND THURSDAY. ALL MODELS START TO
BREAKDOWN THE RIDGE ON FRIDAY BUT DISAGREE ON THE STRENGTH/POSITION
OF A TROUGH OVER THE EASTERN PACIFIC. WILL CONTINUE TO UNDERCUT MOS
GUIDANCE HIGHS FOR THE VALLEYS DUE TO THE PRESENCE OF INVERSIONS
WHICH WILL INHIBIT MIXING. WITH THAT BEING SAID, 61 DEGREES IS THE
NORMAL HIGH FOR LAS VEGAS ON THURSDAY. THE CURRENT FORECAST IS FOR
68. THE REMAINDER OF THE SOUTHERN GREAT BASIN AND MOJAVE DESERT WILL
ENJOY SIMILAR CONDITIONS WITH HIGHS RUNNING 6 TO 10 DEGREES ABOVE
NORMAL. A NORTH WIND WILL LINGER DOWN THE COLORADO RIVER SOUTH OF
LAKE MOHAVE TUESDAY AND WEDNESDAY THEN LESSEN ON THURSDAY AND
FRIDAY. NO SIGNIFICANT WINDS ARE EXPECTED ELSEWHERE.
&&

.AVIATION...FOR MCCARRAN...SOUTH WINDS OF 10-16 KTS SHOULD DECREASE
BELOW 9 KTS AND BECOME WESTERLY THIS EVENING BEFORE A COLD FRONT
SWEEPS ACROSS THE TERMINAL AREA AROUND 08Z SUNDAY. WINDS BEHIND THE
FRONT WILL BE AROUND 10-16 KTS WITH GUSTS 15-25 KTS THROUGH SUNDAY
MORNING. WINDS SHOULD THEN DECREASE SUNDAY AFTERNOON. OUTSIDE OF
WINDS NO OPERATIONALLY SIGNIFICANT CLOUDS/WEATHER IS EXPECTED.

FOR THE REST OF SOUTHERN NEVADA...NORTHWEST ARIZONA...AND SOUTHEAST
CALIFORNIA...A COLD FRONT WILL SWEEP DOWN THROUGH SOUTHERN NEVADA
AND SURROUNDING AREAS OVERNIGHT FOLLOWED BY GUSTY NORTHWEST TO NORTH
WINDS. SOUTHWEST TO WEST WINDS OF 10-20 KTS AND GUSTS OF 25-30 KTS
WILL OCCUR AHEAD OF THE FRONT ACROSS THE REGION THROUGH EARLY THIS
EVENING. AREAS OF MECHANICAL TURBULENCE ARE ALL POSSIBLE IN/AROUND
THE OWENS VALLEY THROUGH THIS EVENING. WIND GUSTS OF 20-30 KTS CAN
BE EXPECTED BEHIND THE FRONT ON SUNDAY ESPECIALLY IN THE COLORADO
RIVER VALLEY FROM KIFP TO KHII.
&&

.SPOTTER INFORMATION STATEMENT...SPOTTERS ARE ENCOURAGED TO REPORT
SIGNIFICANT WEATHER ACCORDING TO STANDARD OPERATING PROCEDURES.
&&

$$

SHORT TERM/AVIATION...ADAIR
LONG TERM.............PIERCE

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