000
FXUS66 KHNX 162225
AFDHNX

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN JOAQUIN VALLEY - HANFORD CA
325 PM PDT THU MAY 16 2013

.SYNOPSIS...
CLOUDS...WIND...AND LIGHT SHOWERS WILL CONTINUE TO MOVE ACROSS THE
REGION THROUGH TOMORROW. TEMPERATURES WILL REBOUND BY THE WEEKEND.

&&

.DISCUSSION...
AN UPPER LEVEL WEAK COLD FRONT HAS MOVED SOUTHWARD THROUGH CENTRAL
CALIFORNIA TODAY BRINGING SCATTERED LIGHT SHOWERS TO THE AREA. THE
FRONT IS CURRENTLY ORIENTATED FROM THE NORTHEAST TO THE SOUTHWEST
OVER KERN COUNTY. THE UPPER LEVEL FLOW AHEAD OF AND PARALLEL TO THE
FRONT IS BRINGING STRONG WINDS TO THE TEHACHAPI MOUNTAIN AND KERN
COUNTY DESERT AREAS. WIND GUSTS ARE IN CURRENTLY IN THE MID 40 MPH
RANGE AT THIS TIME. A WIND ADVISORY UNTIL MIDNIGHT PDT IS
CURRENTLY IN EFFECT FOR THOSE LOCALES.

THE POST FRONTAL ONSHORE FLOW ASSOCIATED WITH THE TROUGH IS NOW
BEGINNING TO DEVELOP OVER THE CENTRAL CALIFORNIA COAST. THIS
ONSHORE FLOW WILL ALLOW FOR A MARINE PUSH AND BRING COOLER AIR
AND BREEZY CONDITIONS INTO THE SAN JOAQUIN VALLEY THIS
EVENING...ESPECIALLY IN THE PACHECO PASS AREA. THEREFORE...A WIND
ADVISORY WAS ISSUED AND WILL BE IN EFFECT THIS EVENING UNTIL 8 PM
PDT FOR THE WESTERN SIDE OF THE NORTHWESTERN SAN JOAQUIN VALLEY.

THE WESTERLY FLOW ALOFT COUPLED WITH THE COOLER AIRMASS...WILL
CREATE SOME OROGRAPHIC LIFT AND VERTICAL INSTABILITY THIS EVENING
AND OVERNIGHT HOURS WHICH WILL INCREASE THE CHANCES FOR A LIGHT
RAIN SHOWERS ALONG THE WEST SIDE OF THE SOUTHERN SIERRA RANGE
AND THE CREST AREAS. A FEW SHOWERS OVER THE SAN JOAQUIN VALLEY
CANNOT BE RULED OUT SINCE THE COOLING TEMPERATURES WILL RAISE THE
RELATIVE HUMIDITIES ALLOWING ANY DEVELOPING SHOWERS TO REACH THE
GROUND. ANY SHOWERS IN THE VALLEY WILL NOT AMOUNT TO MUCH.

RIDGING WILL BEGIN TO MOVE INTO THE REGION BY LATE FRIDAY AND
EARLY SATURDAY HOURS BRINGING GRADUALLY WARMING TEMPERATURES AND
CLEARING CONDITIONS. TEMPERATURES WILL BE BACK TO ABOVE NORMAL BY
SUNDAY LASTING THROUGH TUESDAY AFTERNOON WHEN ANOTHER PACIFIC
NORTHWEST SYSTEM BEGINS TO TRANSIT SOUTHWARD AGAIN LOWERING HEIGHTS
AND AGAIN INCREASING THE CLOUD COVER AND RAIN SHOWER CHANCES FOR THE
NORTHERN PARTS OF THE CWA.

&&

.AVIATION...
LOCAL MVFR CONDITIONS PERSISTING OVER THE CENTRAL SAN JOAQUIN
VALLEY AND INTO THE SOUTHERN SIERRA NEVADA AND TEHACHAPI RANGE
WITH PATCHES OF MTN OBSCURING IFR CONDITIONS IN SHOWERS. THESE
CONDITIONS WILL BE POSSIBLE THROUGH 07Z FRIDAY. GUSTY WINDS
CONTINUING...ESPECIALLY IN THE VICINITY OF MOUNTAIN PASSES THROUGH
07Z FRIDAY.

&&

.AIR QUALITY ISSUES...
NONE.

&&

.CERTAINTY...

THE LEVEL OF CERTAINTY FOR DAYS 1 AND 2 IS LOW.
THE LEVEL OF CERTAINTY FOR DAYS 3 THROUGH 7 IS LOW.

THIS INFORMATION IS PROVIDED AS PART OF A TRIAL PROJECT CONDUCTED
BY THE NATIONAL WEATHER SERVICE SAN JOAQUIN VALLEY - HANFORD.
CERTAINTY LEVELS INCLUDE LOW...MEDIUM...AND HIGH. PLEASE VISIT
WWW.WEATHER.GOV/HNX/CERTAINTY.PHP /ALL LOWER CASE/ FOR ADDITIONAL
INFORMATION AND/OR TO PROVIDE FEEDBACK.

&&

.CLIMATE...
             RECORDS
SITE DATE    HI_MAX:YEAR LO_MAX:YEAR HI_MIN:YEAR LO_MIN:YEAR

KFAT 05-16      103:1970     63:2011     71:2008     40:1894
KFAT 05-17      106:2009     64:2011     73:2008     44:1974
KFAT 05-18      103:2008     63:1994     73:2008     42:1893

KBFL 05-16      105:1970     63:1962     71:2008     39:1918
KBFL 05-17      105:2009     68:1998     73:2009     41:1906
KBFL 05-18      102:2009     68:2011     76:1973     41:1893
&&

.HNX WATCHES/WARNINGS/ADVISORIES...
WIND ADVISORY UNTIL MIDNIGHT PDT TONIGHT CAZ095-098-099.

WIND ADVISORY UNTIL 8 PM PDT THIS EVENING CAZ089.

&&

$$

PUBLIC...ANDERSEN
AVN/FW...MOLINA
SYNOPSIS...WP

WEATHER.GOV/HANFORD