Area Forecast Discussion
Issued by NWS San Joaquin Valley, CA

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FXUS66 KHNX 032233
AFDHNX

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN JOAQUIN VALLEY - HANFORD CA
333 PM PDT THU SEP 3 2015

.SYNOPSIS...
A COOLING TREND WILL CONTINUE THROUGH FRIDAY 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 THROUGH THE END OF THE WEEK.
TEMPERATURES WILL WARM TO SEASONABLE LEVELS BY LABOR DAY.
OTHERWISE...DRY WEATHER IS EXPECTED THROUGH THE HOLIDAY WEEKEND.

&&

.DISCUSSION...SUNNY SKIES PREVAILING ACROSS THE CENTRAL CALIFORNIA
INTERIOR THIS AFTERNOON WITH A DRY WSW FLOW ALOFT. AN UPPER LOW IS
CENTERED OVER VANCOUVER WITH AN AMPLIFIED TROUGH EXTENDING DOWN TO
OFF THE SOCAL COAST. THE COOLING TREND CONTINUES WITH TEMPERATURES
DOWN SEVERAL DEGREES FROM YESTERDAY. HIGHS IN THE CENTRAL/SOUTHERN
SAN JOAQUIN VALLEY WILL STAY IN THE 80S TODAY.

SATELLITE LOOPS SHOW UPSTREAM S/W ENERGY OVER HAIDA GWAII (FORMERLY
KNOWN AS THE QUEEN CHARLOTTE ISLANDS). MODELS TRACK THIS WAVE DOWN
TO NORCAL ON FRIDAY WITH SOME LIMITED PRECIP STAYING WELL TO THE
NORTH OF THE HANFORD WARNING AND FORECAST AREA. THIS WILL INCREASE
THE ONSHORE SURFACE PRESSURE GRADIENT A LITTLE WITH SOME BREEZY TO
LOCALLY GUSTY WINDS...ESPECIALLY THROUGH AND BELOW THE COASTAL RANGE
PASSES (THE DIABLO RANGE AND THE TEMBLORS) AND ACROSS EASTERN KERN
COUNTY INTO THE DESERT (THE TEHACHAPI PASS TO AROUND MOJAVE AS
WELL AS THE WALKER PASS). WE WILL SEE A BIT MORE COOLING ON FRIDAY
WITH HIGHS IN THE SJV DROPPING TO THE LOWER TO MID 80S...AROUND 10
DEGREES BELOW SEASONAL AVERAGES. LITTLE CHANGE IS EXPECTED SATURDAY
AS THE MODELS BEGIN TO SHIFT THE TROUGH EASTWARD OVER IDAHO. A WEAK
CYCLONIC FLOW ALOFT WILL REMAIN OVER CENCAL SUN/MON AS A COUPLE MORE
SHORT WAVES MOVE ACROSS THE PACNW. HEIGHTS AND THICKNESSES BEGIN
TO REBOUND SUNDAY FOR SEVERAL DEGREES WARMING...THEN A LITTLE MORE
WARMING ON MONDAY. CONFIDENCE IS MODERATE NEXT WEEK WITH A ZONAL
FLOW PATTERN ACROSS THE EPAC AND LITTLE DAY TO DAY CHANGES. HIGHS
IN THE SJV ARE FORECAST TO BE MAINLY IN THE MID 90S...SLIGHTLY ABOVE
CLIMO. DRY CONDITIONS WILL PERSIST WITH GENERALLY LIGHT WINDS.

&&

.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. STRONG WINDS MAY ALSO BE POSSIBLE OVER THE CREST OF THE
SIERRA NEVADA AND TEHACHAPI RANGE ON LATE NIGHT INTO FRIDAY.
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 09-03      111:1955     71:1912     77:2003     52:1964
KFAT 09-04      107:1988     74:1912     75:1998     51:1912
KFAT 09-05      105:1984     73:1978     73:1991     47:1887

KBFL 09-03      112:1955     78:1985     78:1998     50:1913
KBFL 09-04      109:1988     77:1936     77:1950     49:1915
KBFL 09-05      109:1904     76:1978     75:1997     49:1916
&&

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

$$

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

WEATHER.GOV/HANFORD



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