Area Forecast Discussion
Issued by NWS San Joaquin Valley, CA

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000
FXUS66 KHNX 212204
AFDHNX

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN JOAQUIN VALLEY - HANFORD CA
304 PM PDT MON JUL 21 2014

.SYNOPSIS...
MOSTLY CLEAR SKIES OVER THE REGION AS WEAK HIGH PRESSURE PREVAILS.
AFTERNOON SHOWERS AND THUNDERSTORMS ARE POSSIBLE ALONG THE CREST OF
THE SIERRA NEVADA DURING THE AFTERNOON HOURS.

&&

.DISCUSSION...

CUMULUS CLOUD BUILDING OVER THE MOUNTAINS OTHERWISE MOSTLY SUNNY
ACROSS CENTRAL CALIFORNIA. SATELLITE PRECIPITABLE WATER ESTIMATES
SHOW ANOMALOUS HIGH MOISTURE OVER THE SIERRA WITH SURFACE DEW
POINTS ALSO RELATIVELY HIGH IN THE LOWER 50S. SOME FAST MOVING
HIGH CLOUDS OVER THE SOUTH SAN JOAQUIN VALLEY INDICATING A
STRONG SW FLOW BECOMING ESTABLISHED. THE 12Z VANDENBERG SOUNDING
SHOWS A STABLE AND DRIER AIRMASS IN THE SW FLOW AROUND 12KFT. THUS
EXPECT LIMITED STORM ACTIVITY IF ANY THIS AFTERNOON WITH THIS
DRIER STABLE FLOW.

THE MARINE LAYER REMAINS AROUND 3000 FEET AND WILL LIKELY CONTINUE
TO PROVIDE GUSTY WINDS ALONG THE WEST SIDE AS MARINE AIR SPILLS
THROUGH THE COASTAL MOUNTAIN PASSES. AN UPPER-LEVEL LOW WEST OF
BAJA CALIFORNIA WILL MOVE NORTH ALONG THE COAST AND THEN INLAND
OVER NCAL WEDNESDAY. THIS SHOULD MAINTAINING THE DEEP THE MARINE
LAYER ALONG THE COAST KEEPING THE POTENTIAL FOR GUSTY WINDS ALONG
THE WEST SIDE OF THE VALLEY THROUGH WEDNESDAY. THE MARINE AIR
FLOWING INTO THE SAN JOAQUIN VALLEY SHOULD KEEP TEMPERATURES A BIT
BELOW NORMAL WITH LITTLE CHANGE THROUGH WEDNESDAY. HOWEVER
TEMPERATURES IN THE MOUNTAINS SHOULD SEE MORE WARMING.

BEGINNING THURSDAY...THE UPPER-LEVEL RIDGE CENTERED OVER THE
FOUR-CORNERS REGION IS FORECAST TO BUILD BACK INTO CALIFORNIA.
TRIPLE-DIGIT HEAT WILL RETURN TO THE CENTRAL AND SOUTHERN SAN
JOAQUIN VALLEY FOR THE WEEKEND AND INTO THE FIRST PART OF NEXT
WEEK.

THE MEDIUM RANGE MODELS PROG A RETURN OF MONSOON MOISTURE INTO
SOUTH CALIFORNIA NEXT MONDAY. THIS MOISTURE WILL MOVE INTO THE
SOUTHERN SIERRA NEVADA FROM THE SOUTHEAST AND COULD BRING ISOLATED
THUNDERSTORMS TO THE SOUTHERN SIERRA NEVADA CREST FOR THE END OF
THE FORECAST PERIOD.

&&

.AVIATION...
VFR CONDITIONS CAN BE EXPECTED THROUGHOUT THE CENTRAL CALIFORNIA
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.

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 07-21      112:1908     79:1987     82:2006     56:1973
KFAT 07-22      112:2006     83:1896     84:2006     56:1903
KFAT 07-23      113:2006     84:1918     90:2006     55:1897

KBFL 07-21      112:1938     81:1987     83:1969     50:1906
KBFL 07-22      113:1908     82:1984     88:1910     50:1903
KBFL 07-23      114:1931     86:1903     83:2006     54:1914
&&

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

$$

PUBLIC...MV
AVN/FW...MV
SYNOPSIS...WP

WEATHER.GOV/HANFORD









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