Heat in Nevada, July 12 to 15, 2007

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAS VEGAS NV
955 AM PDT THU JUL 12 2007

.SYNOPSIS...DRY SOUTHWEST FLOW ALOFT COMBINED WITH A MORE STABLE
AIRMASS WILL RESULT IN A RETURN TO HOT AND DRY CONDITIONS WITH SHORT
PERIODS OF GUSTY WINDS IN THE AFTERNOON TODAY AND FRIDAY.
&&

.UPDATE...SHORT TERM FORECAST LOOKS GOOD AND NO UPDATE WILL BE SENT.
WILL BE ADDING 20 POPS TO THE SIERRA SATURDAY AND SUNDAY. BOTH NAM
AND GFS BRING A WEST MOVING WAVE ACROSS THE G. OF CALIFORNIA AND
BAJA THIS WEEKEND AND SLING A SLUG OF MOISTURE NORTH. EXPECT THIS
MOISTURE TO FUEL FOR SOME SIERRA THUNDERSTORMS. LIKE MID SHIFT LONG
TERM FORECASTER LOOKING AT POSSIBLE GUSTY WINDS WEDNESDAY AS TROUGH
COMES ASHORE AND GRADIENT TIGHTENS.
&&

.PREV DISCUSSION...255 AM PDT THU JUL 12 2007...SHORT WAVE WHICH
CROSSED OVER THE AREA ON WEDNESDAY HAS RESULTED IN DRYING AND
STABILIZING CONDITIONS ACROSS THE CWA. ALTHOUGH SYNOPTIC PATTERN OF
RIDGE OVER OR TO THE EAST OF THE CWA WITH TROUGH OFF THE CALIFORNIA
COAST HAS NOT CHANGE...LIMITED MOISTURE EXPECTED TO ADVECT INTO THE
CWA TODAY OR FRIDAY. ALTHOUGH SOME AFTERNOON CU LIKELY ACROSS THE
MOUNTAINS...THUNDERSTORM DEVELOPMENT IS NOT EXPECTED. BY SATURDAY
INVERTED TROUGH MOVING ACROSS NORTHERN MEXICO MAY BRING A SLIGHT
INCREASE IN MOISTURE AND DESTABILIZE THE ATMOSPHERE ONCE AGAIN...BUT
FOR NOW WILL ONLY INCLUDE MENTION OF ISOLATED MOUNTAIN ACTIVITY.
CLOUDS ALLOWED FOR COOLING ON WEDNESDAY...BUT WITH MOSTLY SUNNY
CONDITIONS TODAY AND FRIDAY...LOOK FOR DAY TIME TEMPS TO REBOUND TO
ABOVE NORMAL READINGS ONCE AGAIN WITH LITTLE CHANGE INTO SATURDAY.
LOCAL GUSTY WINDS EXPECTED DURING THE LATE AFTERNOON HOURS...BUT
OVERALL DIURNAL CYCLE WILL BE SEEN INTO THE WEEKEND.

.LONG TERM...THE EXTENDED LOOKS DRY AT THIS POINT WITH THE EXCEPTION
OF MOHAVE COUNTY WHERE ISOLATED THUNDERSTORMS WILL BE POSSIBLE EACH
AFTERNOON SUNDAY AND MONDAY WITH HIGH PRESSURE CENTERED NEAR THE
FOUR CORNERS. RIDGING SHIFTS EAST TUESDAY THRU THURSDAY AS A EASTERN
PACIFIC TROUGH BEGINS TO PLAY A ROLE IN THE AREA WEATHER. THIS WOULD
PRODUCE SLIGHTLY COOLER TEMPERATURES AND POSSIBLE GUSTY WINDS DURING
THE AFTERNOON HOURS.
&&

AVIATION....FOR MCCARRAN...LIGHT WINDS AND CLEAR SKIES THROUGH THE
MORNING. EAST TO SOUTHEAST WINDS UNDER 10 KTS IN THE EARLY AFTERNOON
WILL GRADUALLY TURN SOUTHWESTERLY AROUND 10 KTS WITH GUSTS TO NEAR
20 KTS MID TO LATE AFTERNOON.

FOR THE REST OF SOUTHERN NEVADA...NORTHWEST ARIZONA...AND SOUTHEAST
CALIFORNIA: MAINLY CLEAR SKIES AND LIGHT WINDS THROUGH THE MORNING
HOURS. WINDS TURN SOUTHERLY IN THE AFTERNOON WITH GUSTS IN THE 20 TO
25 KT RANGE.
&&

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

JACQUES/JENSEN/SALMEN

HTTP://WEATHER.GOV/LASVEGAS

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE LAS VEGAS NV
515 AM PDT THU JUL 12 2007

AZZ001>003-036-CAZ519>527-NVZ014>022-130000-
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-
515 AM PDT THU JUL 12 2007 /515 AM MST THU JUL 12 2007/

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

.DAY ONE...TODAY AND TONIGHT

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NEEDED.