Area Forecast Discussion
Issued by NWS San Joaquin Valley, CA

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FXUS66 KHNX 270016
AFDHNX

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN JOAQUIN VALLEY - HANFORD CA
416 PM PST FRI DEC 26 2014

.SYNOPSIS...
A COOL NORTHERLY FLOW WILL PREVAIL OVER THE REGION AS HIGH PRESSURE
REMAINS OFF THE WEST COAST...LOW TEMPERATURES WILL REACH THE
COLDEST SO FAR THIS SEASON TONIGHT. AS THE HIGH MOVES INLAND BY
EARLY NEXT WEEK...TEMPERATURES ARE EXPECTED TO MODERATE SLIGHTLY.


&&

.DISCUSSION...AFTER A CHILLY START THIS MORNING WITH POCKETS OF
FROST IN THE VALLEY AND DESERT AREAS...TEMPERATURES HAVE WARMED TO
AROUND CLIMO FOR HIGHS TODAY. A DRY NORTH/NORTHEASTERLY FLOW
CONTINUES ACROSS OUR AREA BEHIND THE RECENT FRONTAL SYSTEM
PASSAGE...ALTHOUGH RESIDUAL MOISTURE IS EVIDENT IN SOME LOW LEVEL
CLOUDS ALONG THE SOUTHERN SIERRA FOOTHILLS. VALLEY SKIES ARE
HOWEVER EXPECTED TO BE GENERALLY CLEAR OVERNIGHT...AND WITH THE
COLD AIR IN PLACE AND LIGHT LOW LEVEL WINDS WE ARE LOOKING FOR
TEMPERATURES A BIT COLDER OVERNIGHT TONIGHT. A FREEZE WARNING IS
NOW IN EFFECT FOR LATE TONIGHT AND TOMORROW MORNING FOR THE SAN
JOAQUIN VALLEY AND A HARD FREEZE WARNING FOR THE KERN COUNTY
DESERT ZONES.

BY SATURDAY...TEMPERATURES BEGIN TO MODERATE UNDER WEAK RIDGING
AHEAD OF ANOTHER SHORTWAVE TROUGH MOVING THROUGH THE PACIFIC
NORTHWEST. MODELS ARE COMING INTO A BIT BETTER AGREEMENT IN THE
DEVELOPING SYNOPTIC PATTERN FOR EARLY NEXT WEEK AS ADDITIONAL
ENERGY DROPS SOUTH AND A MID/UPPER LEVEL LOW PRESSURE AREA
DEVELOPS NEAR CENTRAL CALIFORNIA. THE FORECAST FOR NEXT WEEK WILL
BE DEPENDENT ON HOW AND WHERE THIS LOW DEVELOPS AND MOVES.

WITH THE MODEL DISCREPANCIES IN PLACE...CERTAINTY IN THE FORECAST
BEYOND THE WEEKEND IS LOW. THERE REMAINS A POSSIBILITY FOR A
STRONG OFFSHORE WIND EVENT BY MONDAY NIGHT. ALSO CANNOT RULE OUT
AT LEAST A SLIGHT CHANCE FOR PRECIPITATION ACROSS MUCH OF THE
AREA BY TUESDAY...AGAIN THIS IS DEPENDENT ON THE EXACT DEVELOPMENT
OF THE LOW PRESSURE AREA.

&&

.AVIATION...
IN THE SAN JOAQUIN VALLEY...LOCAL MVFR VISIBILITIES IN MIST THRU 18Z
FRI. OTHERWISE...VFR CONDITIONS CAN BE EXPECTED THROUGHOUT THE
CENTRAL CA INTERIOR DURING THE NEXT 24 HOURS.
.END..
&&

.AIR QUALITY ISSUES...
ON SATURDAY DECEMBER 27 2014... FIREPLACE/WOOD STOVE BURNING
STATUS IS: NO BURNING UNLESS REGISTERED IN FRESNO... KERN AND
MADERA COUNTIES.
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 LOW.

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 12-26       70:1892     38:1908     55:1983     21:1987
KFAT 12-27       72:1991     37:1908     55:1977     23:1962
KFAT 12-28       66:1945     35:1908     54:1977     24:1962

KBFL 12-26       71:1999     35:1918     56:1977     20:1905
KBFL 12-27       72:1991     39:1933     56:1977     23:1930
KBFL 12-28       73:1977     40:1908     58:1977     24:1930
&&

.HNX WATCHES/WARNINGS/ADVISORIES...
FREEZE WARNING FROM MIDNIGHT TONIGHT TO 9 AM PST SATURDAY
CAZ089>092.

HARD FREEZE WARNING FROM MIDNIGHT TONIGHT TO 9 AM PST SATURDAY
CAZ098-099.

&&

$$

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

WEATHER.GOV/HANFORD



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