Area Forecast Discussion
Issued by NWS San Joaquin Valley, CA

000
FXUS66 KHNX 252201
AFDHNX

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN JOAQUIN VALLEY - HANFORD CA
301 PM PDT SAT MAY 25 2013

.SYNOPSIS...
A STORM SYSTEM OVER THE PACIFIC NORTHWEST WILL BRING A COOL ONSHORE
FLOW TO THE CENTRAL CALIFORNIA INTERIOR THROUGH THE HOLIDAY WEEKEND.
TEMPERATURES WILL BE NEAR NORMAL THROUGH SUNDAY. MEMORIAL DAY WILL
BRING INCREASING CLOUDS AND COOLER AFTERNOON TEMPERATURES WITH THE
POSSIBILITY OF LIGHT PRECIPITATION MAINLY OVER THE HIGH SIERRA TOWARD
EVENING.

&&

.DISCUSSION...
A LARGE BROAD UPPER TROUGH ALONG THE WEST U.S. REMAINS NEAR
STATIONARY. AN ONSHORE FLOW WITH LITTLE MOISTURE WILL MAINTAIN
COOL AND DRY CONDITIONS FOR MUCH OF THE WEEKEND. AN UPPER AIR
DISTURBANCE OFF THE OREGON COAST WILL PUSH THROUGH NCAL SUNDAY.
THIS WILL STRENGHTEN ONSHORE PRESSURE GRADIENTS OVER CENTRAL
CALIFORNIA LATE ON SUNDAY. STRONG GUSTY WINDS WILL DEVELOP SUNDAY
AFTERNOON ESPECIALLY BELOW THE MOUNTAIN PASSES OF KERN COUNTY AND
MOJAVE DESERT AREA. STRONGER WIND POTENTIAL MAY DEVELOP MONDAY AS
A DEEPER SHORT WAVE REACHES THE PAC NW AND NCAL. THIS SYSTEM IN
THE EPAC ALONG 40N IS ACCOMPANIED BY A FETCH OF SUBTROPICAL
MOISTURE WITH PW VALUES OF 1.5 IN AND UPPER JET 120+KT. MODELS
HAVE TRENDED A BIT DRIER AND NOT AS COLD. OPERATIONAL GFS AND EC
IN BETTER AGREEMENT WITH THE ENERGY AND UPPER TROUGH. ALTHOUGH
STILL SOME DIFFERENCE IN THE QPF AMOUNTS. MOST OF THE VORTICITY
ENERGY MAY PUSH THROUGH NCAL INTO THE GREAT BASIN MONDAY NIGHT
INTO TUESDAY MORNING. PRECIPITATION THREAT MAY BE FOCUS OVER THE
MOUNTAINS WITH LIGHT AMOUNTS IN THE SAN JOAQUIN VALLEY. SNOW
LEVELS MAY LOWER NEAR 9KFT WITH 700MB TEMPERATURES AT 0C DEGREES.
AN INCH OR TWO OF SNOW COULD FALL OVER THE HIGH SIERRA MONDAY
NIGHT INTO TUESDAY. THE UPPER JET WILL BECOME ALIGN WITH GRADS
ACROSS CENTRAL CALIFORNIA RESULTING IN WINDY CONDITIONS THROUGH
WEDNESDAY.

&&

.AVIATION...
VFR CONDITIONS WILL PREVAIL ACROSS THE CENTRAL CALIFORNIA INTERIOR.

&&

.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 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 05-25      102:1890     59:1906     68:1890     42:1980
KFAT 05-26      103:1974     66:1946     68:1951     40:1953
KFAT 05-27      104:1974     55:1971     69:1896     46:1998

KBFL 05-25      106:1982     58:2008     77:1982     39:1893
KBFL 05-26      107:1951     68:1998     72:1979     40:1918
KBFL 05-27      106:1974     66:1971     75:1974     42:1917
&&

.HNX WATCHES/WARNINGS/ADVISORIES...
WIND ADVISORY FROM 4 PM SUNDAY TO 9 PM PDT TUESDAY CAZ095-099.

&&

$$

PUBLIC...MV
AVN/FW...DUDLEY
SYNOPSIS...ANDERSEN

WEATHER.GOV/HANFORD