National Weather Service Text Product Display

Area Forecast Discussion
Issued by NWS San Joaquin Valley, CA
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000
FXUS66 KHNX 130400
AFDHNX

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN JOAQUIN VALLEY - HANFORD CA
900 PM PDT WED JUN 12 2013

.SYNOPSIS...A DRY SOUTHWEST FLOW WILL PERSIST OVER THE CENTRAL
CALIFORNIA INTERIOR FOR THE NEXT SEVERAL DAYS. SEASONAL TEMPERATURES
AND DRY WEATHER WILL PREVAIL.


&&

.DISCUSSION...TEMPERATURES SOARED WELL INTO THE 90S THIS AFTERNOON
IN THE SJ VLY AND LOWER FOOTHILLS BUT IT WILL BE THE LAST TIME HIGH
TEMPS GET THAT CLOSE TO THE CENTURY MARK FOR AT LEAST THE NEXT 7 DAYS.
AS OF THIS WRITING...OCEAN COOLED AIR IS FLOWING BRISKLY THROUGH THE
SACRAMENTO DELTA. THE INFLUX OF MARINE AIR WILL SPREAD SOUTHWARD AND
EASTWARD INTO THE SJ VLY AND LOWER FOOTHILLS OVERNIGHT. AS A RESULT...
MAXIMUM TEMPS THURSDAY WILL BE SEVERAL DEGREES LOWER IN THESE AREAS
COMPARED TO TODAY. THE COOLING TREND WILL BE LESS NOTICEABLE OVER THE
REMAINDER OF THE CENTRAL CA INTERIOR THURSDAY...ESPECIALLY IN THE NE
CORNER OF KERN COUNTY WHERE DOWNSLOPING WEST WINDS WILL BE OCCURRING.

A LOW PRESSURE SYSTEM POISED ALONG THE WASHINGTON COAST WILL PROVIDE
THE IMPETUS FOR A RATHER ROBUST ONSHORE FLOW ACROSS CENTRAL CA DURING
THE NEXT COUPLE OF DAYS. THIS AREA OF LOW PRESSURE WILL BE KICKED
INLAND BY YET ANOTHER LOW PRESSURE SYSTEM FRIDAY THAT IS CURRENTLY
CENTERED OVER THE GULF OF ALASKA. THE MODELS ANCHOR THIS SECOND LOW
OFF THE PAC NW COAST THIS WEEKEND AND DO NOT BRING IT INLAND UNTIL
THE MIDDLE OF NEXT WEEK. THAT IS GOOD NEWS FOR CENTRAL CALIFORNIANS
WHO ENJOY THE BENEFITS OF MARINE PUSHES IN THE SJ VLY. IT WILL ALSO
MEAN THERE MAY BE AN EXTENDED PERIOD OF JUNE GLOOM...OR LOW STRATUS...
ALONG THE CENTRAL CA COAST BEGINNING SATURDAY. FOR FOLKS RESIDING IN
THE KERN COUNTY DESERT...GUSTY WINDS WILL BE COMMON OCCURRENCES EACH
AFTERNOON AND EVENING...PARTICULARLY RIGHT BELOW THE MOUNTAIN PASSES.
WINDS WILL ALSO BE GUSTY AT TIMES THROUGH PACHECO PASS AND COTTONWWOD
PASS ON THE WEST SIDE OF THE SJ VLY. DESPITE MINOR WARMING FRIDAY AND
SATURDAY...HIGH TEMPERATURES IN THE SJ VLY AND LOWER FOOTHILLS WILL
REMAIN BELOW 90 DEGREES IN MOST AREAS WITH OVERNIGHT LOWS GENERALLY
IN THE 50S.

OTHERWISE...THE WEATHER WILL BE BONE DRY THROUGHOUT THE CWA FOR AT
LEAST THE NEXT 7 DAYS. ON A SIDE NOTE...IF NO MEASURABLE RAIN FALLS
IN FAT AND BFL FOR THE REST OF THE MONTH...THE 2012-2013 RAIN SEASON
WILL BE THE 7TH AND AND 8TH DRIEST ON RECORD RESPECTIVELY...AND THOSE
RECORDS DATE BACK TO THE LATE 1800S.

&&

.AVIATION...
VFR CONDITIONS CAN BE EXPECTED ACROSS THE CENTRAL CA INTERIOR.

&&

.PREV DISC... /ISSUED 458 PM PDT WED JUN 12 2013/

DISCUSSION...
AN UPPER LEVEL CLOSED LOW OFF OVER THE PACIFIC NORTHWEST CONTINUES
TO REMAIN IN PLACE BRINGING SHORTWAVE ENERGY IMPULSES AROUND THE
SOUTHERN PERIPHERY OF THE UPPER LOW.

LATEST WATER VAPOR IMAGERY SHOWS THE LATEST MID LEVEL SHORTWAVE
TROUGH CURRENTLY CENTERED OVER THE PACIFIC NEAR 34N/120W AND
MOVING EASTWARD TOWARDS THE SOUTHERN CENTRAL CALIFORNIA COAST.
AHEAD OF THIS DRY SHORTWAVE THE MARINE LAYER HAS BEEN THICKENING
THROUGH THE MORNING AND AFTERNOON HOURS AND ACCORDING TO FORT ORD
PROFILER DATA IS CURRENTLY AROUND 1900 FEET. AS THE TROUGH GETS
CLOSER THE MARINE LAYER WILL BEGIN TO SPILL THROUGH THE PACHECO
PASS AND SUNFLOWER VALLEY. SFO-LAS P-GRADS WILL HOVER AROUND 10 MB
THIS EVENING. WINDS ALONG THE WEST SIDE OF THE SAN JOAQUIN VALLEY
WILL APPROACH 35 TO 40 MPH FOR A SHORT TIME AND COULD KICK UP
SOME PATCHY DUST...ESPECIALLY NEAR THE AFOREMENTIONED PASSES. WINDS
WILL BE GUSTY IN THE KERN COUNTY DESERT AREAS AS WELL THIS
EVENING. AT THIS TIME WIND ADVISORIES DO NOT LOOK NECESSARY AS
THE DURATION OF THE STRONGEST WINDS WILL BE SHORT-LIVED. PRESSURE
GRADIENTS ARE PROGGED TO INCREASE TOMORROW AFTERNOON AND IS LIKELY
A HARBINGER OF ANOTHER MARINE PUSH TOMORROW.

THIS DRY ONSHORE FLOW WILL CONTINUE INTO EARLY NEXT WEEK AND WILL KEEP
TEMPERATURES NEAR NORMAL LEVELS. ALTHOUGH...THURSDAY TEMPERATURES WILL
BE KEPT SLIGHTLY BELOW NORMS FOR MOST OF THE AREA AS THE COOLER
DRIER MARINE AIRMASS SETTLES INTO THE SAN JOAQUIN VALLEY.
TEMPERATURES WILL THEN AGAIN GRADUALLY INCREASE UNTIL ANOTHER
MARINE PUSH ON SUNDAY KNOCKS TEMPERATURES BACK BELOW NORMAL LEVELS
ONCE AGAIN. THIS PATTERN LOOKS TO CONTINUE AT LEAST THROUGH NEXT
THURSDAY.

&&

.AIR QUALITY ISSUES...
ON THURSDAY JUNE 13 2013... UNHEALTHY FOR SENSITIVE GROUPS IN
FRESNO... KERN... KINGS... MADERA AND TULARE COUNTIES AND SEQUOIA
NATIONAL PARK AND FOREST.
FURTHER INFORMATION IS AVAILABLE AT VALLEYAIR.ORG

&&

.CERTAINTY...

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

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 06-12      107:1985     66:1998     73:1985     47:1952
KFAT 06-13      107:1949     69:1922     71:1985     47:1907
KFAT 06-14      108:1966     65:1962     72:2007     42:1907

KBFL 06-12      110:1979     63:1998     75:1979     38:1907
KBFL 06-13      106:1940     75:1907     76:1975     41:1907
KBFL 06-14      111:1961     70:1962     78:1975     43:1907
&&

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

$$

PUBLIC...DURFEE
AVN/FW...BINGHAM
PREV DISCUSSION...ANDERSEN
SYNOPSIS...BSO

WEATHER.GOV/HANFORD
National Weather Service Weather Forecast Office
