Area Forecast Discussion
Issued by NWS San Joaquin Valley, CA

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FXUS66 KHNX 042153
AFDHNX

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN JOAQUIN VALLEY - HANFORD CA
253 PM PDT FRI SEP 4 2015

.SYNOPSIS...
A COOLING TREND WILL CONTINUE BRINGING TEMPERATURES SEVERAL DEGREES
BELOW NORMAL THROUGH SATURDAY. WINDS WILL BE GUSTY THROUGH AND BELOW
THE KERN COUNTY MOUNTAIN PASSES AND ON THE WEST SIDE OF THE SAN
JOAQUIN VALLEY TODAY. TEMPERATURES WILL WARM TO SEASONABLE LEVELS BY
LABOR DAY. DRY WEATHER IS EXPECTED THROUGH THE HOLIDAY WEEKEND.

&&

.DISCUSSION...
UPPER LEVEL TROF CONTINUE TO DIG INTO THE PACIFIC NORTHWEST THIS
AFTERNOON...WITH A STRONG WESTERLY WINDS NOW EXISTING OVER THE
DISTRICT. WHILE THE SURFACE COLD FRONT AND ASSOCIATED PRECIP WILL
STAY WELL NORTH OF THE DISTRICT...WINDS...MAINLY HIGH ELEVATION...
WILL DOMINATE THE WEATHER FOR AT LEAST ONE MORE DAY. ALONG WITH
THE WINDS...COOLER TEMP/S FILTERED INTO THE REGION AS MOST OF THE
SAN JOAQUIN VALLEY TEMP/S HAVE BEEN RUNNING 2-4 DEG-F BELOW THOSE
SEEN THURSDAY AFTERNOON.

THE COLD FRONT WILL CONTINUE PUSHING INTO THE NORTHERN ROCKIES
THIS WEEKEND...ALLOWING FOR HEIGHT RISES OVER THE WEST COAST.
THEREFORE...SATURDAY WILL SEE LITTLE CHANGE IN TEMPERATURES AT
CONDITIONS BOTTOM OUT. A WARMING TREND WILL THEN START ON SUNDAY
AS TEMPERATURES RETURN TO NORMAL VALUES. THE HIGH PRESSURE RIDGE
WILL BEGIN DOMINATING THE WEST COAST AROUND THE MIDDLE OF NEXT
WEEK AS MAX TEMPERATURES RETURN TO ABOVE NORMAL CONDITIONS.

SATELLITE IMAGERY IS SHOWING A QUITE ACTIVE PACIFIC OCEAN WITH
TROPICAL STORM KEVIN(14E) JUST SOUTHWEST OF THE BAJA CAL
PENINSULA. HURRICANE CENTER ANALYSIS...ALONG WITH SATELLITE
IMAGERY SHOW KEVIN SLOWLY DRIFTING NORTH. YET...HURRICANE CENTER
PROGS SHOW KEVIN SHIFTING WESTWARD DURING THE WEEKEND. DURING THIS
TIME...ANY MOISTURE MOVING SURGING NORTHWARD WILL GET CAUGHT IN
THE WESTERLIES AND BE STEERED INTO THE DESERT SOUTHWEST.
THEREFORE...A VERY STABLE ATMOSPHERE WILL KEEP THE DISTRICT DRY
DURING THE FORECAST PERIOD. CONFIDENCE IS HIGH WITH THE
DEVELOPMENT OF THE RIDGE PATTERN DURING THE EXTENDED PERIOD.
WHILE NOT A TRULY SOUTHEASTERLY FLOW PATTERN TOWARD THE END OF
NEXT WEEK...A WEAK LOW NEAR 27N/121W MAY HELP SUPPORT A NORTHERN
SURGE OF SUBTROPICAL MOISTURE BY NEXT FRIDAY.

&&

.AVIATION...
AREAS OF MVFR AND LOCAL IFR VISIBILITIES CAN BE EXPECTED IN THE
FOOTHILLS AND HIGHER ELEVATIONS OF THE SOUTHERN SIERRA NEVADA DUE TO
SMOKE. OTHERWISE...VFR CONDITIONS WILL PREVAIL ACROSS THE CENTRAL
CA INTERIOR DURING THE NEXT 24 HOURS.

&&

.AIR QUALITY ISSUES...
NONE.

&&

.CERTAINTY...

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

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 09-04      107:1988     74:1912     75:1998     51:1912
KFAT 09-05      105:1984     73:1978     73:1991     47:1887
KFAT 09-06      106:1988     75:1965     76:1998     49:1887

KBFL 09-04      109:1988     77:1936     77:1950     49:1915
KBFL 09-05      109:1904     76:1978     75:1997     49:1916
KBFL 09-06      111:1904     78:1978     77:1975     45:1899
&&

.HNX WATCHES/WARNINGS/ADVISORIES...
NONE.

&&

$$

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

WEATHER.GOV/HANFORD


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