FXUS66 KHNX 291306
AFDHNX
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN JOAQUIN VALLEY - HANFORD CA
506 AM PST SUN NOV 29 2009
.SYNOPSIS...
HIGH PRESSURE WILL BUILD INTO THE REGION AND REMAIN THROUGH MUCH OF
THE UPCOMING WEEK WITH DRY CONDITIONS EXPECTED. PATCHY FOG AND FROST
ARE LIKELY OVER THE VALLEY DURING THE LATE NIGHT AND EARLY MORNING
HOURS FOR THE NEXT COUPLE OF DAYS.
&&
.DISCUSSION...THE UPPER LOW CONTINUES TO DROP STEADILY SOUTHWARD
TO NORTHERN BAJA THIS MORNING. BACKSIDE SHOWER ACTIVITY HAS ENDED
OVER THE DESERT ZONES AND SKIES ARE MOSTLY CLEAR ACROSS INTERIOR
CENTRAL CALIFORNIA EXCEPT FOR SOME CLOUDS FORMING OVER THE SIERRA
CREST IN THE NORTHEASTERLY FLOW. WITH LIGHT WINDS IN THE
VALLEY...SOME PATCHY FOG AND FROST ARE DEVELOPING. AS THE LOW
CONTINUES TO MOVE SOUTH OF THE AREA THIS MORNING...WINDS OVER THE
SIERRA CREST AND THROUGH THE INDIAN WELLS VALLEY WILL DIMINISH.
CURRENT OBS ARE NOT SHOWING WARNING/ADVISORY THRESHOLDS BEING MET
BUT THE SIERRA WARNING AND INDIAN WELLS ADVISORY REMAIN IN EFFECT
EARLY THIS MORNING UNTIL THE UPPER LOW PULLS FARTHER AWAY.
A RIDGE WILL BUILD OVER THE REGION BEHIND THE DEPARTING UPPER
LOW...BRINGING DRY AND WARMING CONDITIONS OVER THE NEXT COUPLE OF
DAYS...WITH SOME EARLY MORNING FOG AND FROST LIKELY IN THE VALLEY
EACH DAY.
AFTER TUESDAY...MODELS CONTINUE TO HAVE DIFFERING SOLUTIONS ON THE
STRENGTH AND TRAJECTORIES OF WEAK SHORTWAVES MOVING THROUGH THE
RIDGE. CURRENT PROGS SUGGEST NO SIGNIFICANT IMPACT OVER OUR
AREA FROM THE SHORTWAVE TROUGHS THROUGH THE END OF THE WEEK...WITH
TEMPERATURES HOLDING WITHIN A COUPLE OF DEGREES OF CLIMO AND
PRECIPITATION CHANCES REMAINING BELOW 15 PERCENT...CONFINED MAINLY
TO THE MOUNTAINS.
&&
.AVIATION...
IN THE SAN JOAQUIN VALLEY...AREAS OF MVFR VISIBILITIES WITH LOCAL
IFR/LIFR IN FOG CAN BE EXPECTED UNTIL 18Z TODAY AND AGAIN AFTER
06Z MONDAY. OTHERWISE...VFR CONDITIONS WILL PREVAIL ACROSS THE
CENTRAL CALIFORNIA INTERIOR THROUGH 12Z MONDAY.
&&
.AIR QUALITY ISSUES...
NONE
&&
.HNX WATCHES/WARNINGS/ADVISORIES...
HIGH WIND WARNING UNTIL 8 AM PST THIS MORNING FOR CAZ093-096.
WIND ADVISORY UNTIL 10 AM PST THIS MORNING FOR CAZ098.
&&
$$
PUBLIC...JEB
AVN/FW...DURFEE
WEATHER.GOV/HANFORD
