Area Forecast Discussion
Issued by NWS San Joaquin Valley, CA

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FXUS66 KHNX 272012
AFDHNX

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN JOAQUIN VALLEY - HANFORD CA
112 PM PDT WED MAY 27 2015

.SYNOPSIS...
WARMING TEMPERATURES AND MOSTLY CLEAR SKIES WILL PERSIST FOR THE
NEXT SEVERAL DAYS AS HIGH PRESSURE CONTINUES TO DOMINATE THE REGION.

&&

.DISCUSSION...
SATELLITE IMAGERY SHOWS AN UPPER LOW OVER THE PACIFIC NORTHWEST
MOVING INTO IDAHO AND ANOTHER WEAK LOW MOVING ACROSS NORTHERN
BAJA INTO ARIZONA. IN BETWEEN...CENTRAL CALIFORNIA HAS MAINLY
CLEAR SKIES WITH A RIDGE OF HIGH PRESSURE JUST OFF THE WEST COAST.

THE HIGH RESOLUTION MODELS CONTINUE TO INDICATE ENOUGH INSTABILITY
TO GENERATE SOME CUMULUS BUILDUPS AND POSSIBLY A SHOWER OR
THUNDERSTORM ALONG THE CREST OF THE SIERRA THIS AFTERNOON AND
AGAIN THURSDAY AFTERNOON.

ENSEMBLES REMAIN CONSISTENT IN SHIFTING THE LOWS EASTWARD THIS
AFTERNOON AND TONIGHT ALLOWING THE RIDGE TO BEGIN BUILDING INLAND.
THIS WILL BRING WARMING TEMPERATURES ACROSS THE REGION THROUGH
SATURDAY. HIGHS ARE EXPECTED TO BE AROUND 9-12 DEGREES ABOVE
CLIMO BY SATURDAY. MID TO UPPER 90S WILL WIDESPREAD ACROSS THE SAN
JOAQUIN VALLEY...SIERRA FOOTHILLS AND THE DESERT AREAS FRIDAY AND
SATURDAY WITH A FEW AREAS REACHING AROUND 100 DEGREES SATURDAY
AFTERNOON.

HIGH CONFIDENCE CONTINUES IN THE RIDGE SHIFTING EASTWARD OVER THE
ROCKIES SUNDAY AS AN UPPER TROUGH APPROACHES FROM THE EASTERN
PACIFIC. A FEW DEGREES COOLING IS EXPECTED SUNDAY THEN MORE
SIGNIFICANT COOLING MONDAY AS THE TROUGH SWINGS INLAND.
TEMPERATURES ARE FORECAST TO DROP BACK TO AROUND SEASONAL LEVELS
EARLY NEXT WEEK. SURFACE PRESSURE GRADIENTS WILL RAMP UP AGAIN
SUNDAY PRODUCING BREEZY TO GUSTY WINDS...ESPECIALLY THROUGH AND
BELOW MOUNTAIN PASSES. THESE WINDS WILL LIKELY CONTINUE THROUGH AT
LEAST TUESDAY AS ADDITIONAL ENERGY ROUNDS THE TROUGH.


&&

.AVIATION...
ISOLATED SHOWERS AND THUNDERSTORMS POSSIBLE ACROSS THE SIERRA
NEVADA UNTIL 03Z THU. OTHERWISE...VFR CONDITIONS WILL PREVAIL
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 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 05-27      104:1974     55:1971     69:1896     46:1998
KFAT 05-28      107:1984     58:1953     69:2009     45:1927
KFAT 05-29      107:1984     61:1996     72:1939     45:1906

KBFL 05-27      106:1974     66:1971     75:1974     42:1917
KBFL 05-28      107:1973     67:1953     72:2009     43:1906
KBFL 05-29      106:1973     70:2011     75:1973     45:1927
&&

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

$$

PUBLIC...BEAN
AVN/FW...BEAN
SYNOPSIS...WP

WEATHER.GOV/HANFORD



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