Area Forecast Discussion
Issued by NWS San Joaquin Valley, CA

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000
FXUS66 KHNX 300959
AFDHNX

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN JOAQUIN VALLEY - HANFORD CA
259 AM PDT TUE SEP 30 2014

.SYNOPSIS...
A WARMING TREND WILL CONTINUE THROUGH THE WEEK AND INTO THE WEEKEND
AS HIGH PRESSURE BUILDS OVER THE AREA. BY THURSDAY...DAYTIME HIGH
TEMPERATURES THROUGH THE VALLEY WILL REACH ABOVE NORMAL VALUES WITH
THIS TREND CONTINUING INTO AT LEAST EARLY NEXT WEEK.

&&

.DISCUSSION...MAINLY UPPER LEVEL NORTHWEST FLOW WILL PREVAIL OVER
THE REGION TODAY AS THE REGION REMAINS IN BETWEEN AN UPPER TROUGH
MOVING QUICKLY SOUTH SOUTHEAST INTO THE GREAT BASIN WHILE UPPER
LEVEL HIGH PRESSURE BUILDS OVER THE EASTERN PACIFIC. TEMPERATURES
THIS AFTERNOON ARE FORECAST TO BE NEAR NORMAL FOR THE END OF
SEPTEMBER...WITH VALLEY LOCATIONS WARMING INTO THE MID TO UPPER
80S.

BEFORE THE UPPER TROUGH EJECTS QUICKLY EAST LATE TONIGHT INTO
WEDNESDAY MORNING...AN UPPER LEVEL SHORTWAVE MOVES SOUTH DIRECTLY
OVER THE SOUTHERN SIERRA NEVADA. THE HIGH RES NMM...ARW...AND THE
NAM ALL INDICATE LIGHT SHOWERS OVER THE CREST LATE THIS EVENING
INTO EARLY WEDNESDAY...SO A SLIGHT CHANCE OF RAIN/SNOW SHOWERS WAS
ADDED TO THE FORECAST.

BY WEDNESDAY AFTERNOON...THE UPPER RIDGE OVER THE EASTERN PACIFIC
IS FORECAST TO NUDGE SLIGHTLY EAST...RESULTING IN A WARMING TREND
OVER THE AREA. THIS TREND WILL CONTINUE INTO THE WEEKEND...AS THE
RIDGE AXIS MOVES OVER CA ON FRIDAY WITH LITTLE MOVEMENT THROUGH
THE WEEKEND. AS OF NOW...FRIDAY...SATURDAY...AND SUNDAY LOOK TO BE
THE WARMEST DAYS OF THE WEEK...WITH VALLEY TEMPERATURES REACHING
THE MID 90S. THESE TEMPERATURES ARE NEARLY 10 DEGREES ABOVE
NORMAL. EVEN WITH TEMPERATURES WELL ABOVE NORMAL...WE WILL STILL
REMAIN BETWEEN 5 AND 10 DEGREES BELOW ANY POTENTIAL RECORD
BREAKING HEAT.

IN ADDITION TO ABOVE NORMAL TEMPERATURES...AN OFFSHORE WIND FLOW
PATTERN IS FORECAST TO SET UP OVER THE REGION WEDNESDAY INTO THE
WEEKEND. THIS WILL RESULT IN LOWERED RH VALUES WITH POSSIBLE FIRE
WEATHER CONCERNS BY THE MIDDLE TO END OF THE WEEK.

&&

.AVIATION... VFR CONDITIONS WILL PREVAIL THROUGHOUT THE CENTRAL CA
INTERIOR DURING THE NEXT 24 HOURS.

&&

.AIR QUALITY ISSUES...
NONE.

&&

.CERTAINTY...

THE LEVEL OF CERTAINTY FOR DAYS 1 AND 2 IS MEDIUM.
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 09-30      101:2010     56:1894     71:2010     37:1950
KFAT 10-01      100:1987     65:1894     70:2010     39:1971
KFAT 10-02      101:2012     58:1916     71:2010     40:1891

KBFL 09-30      102:1978     69:1971     72:2010     40:1908
KBFL 10-01      103:1980     65:1912     77:2010     37:1908
KBFL 10-02      103:1917     63:2006     72:2010     36:1908
&&

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

$$

PUBLIC...RILEY
AVN/FW...MV
SYNOPSIS...RILEY

WEATHER.GOV/HANFORD


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