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934
FXUS65 KVEF 202229
AFDVEF

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAS VEGAS NV
229 PM PST SAT DEC 20 2014

.SYNOPSIS...MOSTLY CLOUDY CONDITIONS WILL CONTINUE THROUGH TONIGHT
WITH A SLIGHT CHANCE OF SHOWERS OVER THE SOUTHERN GREAT BASIN
MOUNTAINS. HIGH PRESSURE OFF THE CALIFORNIA COAST WILL KEEP THE AREA
DRY AND MILD SUNDAY THROUGH CHRISTMAS EVE...THEN A STORM SYSTEM WILL
PASS NEAR THE AREA CHRISTMAS DAY AND USHER IN A ANOTHER ROUND OF
COOLER TEMPERATURES FOR THE END OF THE WEEK.
&&

.DISCUSSION...HIGH PRESSURE DEVELOPING OFF THE WEST COAST AND A
DIRTY NORTHERLY FLOW ALOFT WILL CONTINUE TO SPREAD CLOUDS ACROSS THE
REGION THROUGH SUNDAY MORNING. A SLIGHT CHANCE OF SHOWERS REMAINS
OVER THE FAR NORTHERN CWA MOUNTAINS INTO EARLY SUNDAY WITH ONLY VERY
LIGHT ACCUMULATIONS EXPECTED. THE THICKER CLOUD SHIELD SHOULD PUSH
EAST OF THE AREA SUNDAY AFTERNOON ALLOWING MORE SUNSHINE AND WARMER
CONDITIONS TO RETURN FOR MUCH OF THE AREA. HOWEVER WITH LIGHT WINDS
EXPECTED SUNDAY, HIGH TEMPERATURES IN SOME VALLEY LOCATIONS COULD
STRUGGLE TO REACH FORECASTED HIGHS.

THE FIRST HALF OF NEXT WEEK...THROUGH CHRISTMAS EVE...WILL BE
DOMINATED BY HIGH PRESSURE OFF THE COAST AND WARMER THAN NORMAL
CONDITIONS. A WEAK SYSTEM DIVING OUT OF THE NORTHERN GREAT BASIN
INTO THE CENTRAL AND SOUTHERN ROCKIES MONDAY WILL TURN WINDS TO THE
NORTH LATER MONDAY AND MONDAY NIGHT WITH LINGERING BREEZY NORTH
WINDS ALONG THE COLORADO RIVER VALLEY TUESDAY INTO WEDNESDAY. WIND
SPEEDS DO NOT LOOK SIGNIFICANT AND NO ADVISORIES ARE ANTICIPATED.

FOR CHRISTMAS DAY...MODELS ARE GENERALLY IN GOOD AGREEMENT WITH A
SYSTEM SLIDING ACROSS NORTHERN NEVADA INTO UTAH AND COLORADO AND A
TRAILING COLD FRONT PASSING ACROSS THE AREA CHRISTMAS NIGHT. THIS
WILL BRING AN INCREASE IN NORTH WINDS AND LEAD TO A COUPLE OF CHILLY
DAYS FRIDAY AND SATURDAY. ANY SHOWER ACTIVITY ON CHRISTMAS EVE OR
CHRISTMAS DAY SHOULD STAY PRIMARILY ACROSS THE NORTHERN ZONE
MOUNTAINS BUT COULD SPREAD SOUTH ALONG THE FRONT THROUGH PORTIONS OF
LINCOLN COUNTY AND NORTHERN MOHAVE COUNTY.
&&

.AVIATION...FOR MCCARRAN...WINDS VARIABLE 6 KTS OR LESS THROUGH THE
AFTERNOON THEN SOUTHWEST UP TO 10KTS OVERNIGHT. MAINLY BKN CLOUDS
AOA 20K FEET WITH FEW-SCT CLOUDS AS LOW AS 10K FEET.

FOR THE REST OF SOUTHERN NEVADA...NORTHWEST ARIZONA...AND SOUTHEAST
CALIFORNIA...WINDS WILL GENERALLY BE 6 KTS OR LESS AND TREND TOWARD
TYPICAL DIURNAL DIRECTIONS THROUGH TONIGHT. A FEW SHOWERS WILL BE
POSSIBLE ACROSS THE HIGHER ELEVATIONS OF INYO, ESMERALDA, CENTRAL
NYE AND NORTHERN LINCOLN COUNTIES THROUGH TONIGHT...WITH LINGERING
CHANCES OVER NORTHERN LINCOLN COUNTY ON SUNDAY. CIGS AS LOW AS 6K-8K
FEET IN AND NEAR ANY SHOWER ACTIVITY OTHERWISE MAINLY SCT-BKN CLOUDS
AOA 15K FEET WITH FEW-SCT CLOUDS AS LOW AS 10K-12K FEET.
&&

.SPOTTER INFORMATION STATEMENT...SPOTTER ACTIVATION IS NOT EXPECTED.
&&

$$

SALMEN

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