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000
FXUS66 KHNX 211110
AFDHNX

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN JOAQUIN VALLEY - HANFORD CA
410 AM PDT TUE MAY 21 2013

.SYNOPSIS...
HIGH PRESSURE WILL MOVE EAST OF THE REGION TODAY AS A DEEP COOL
LOW PRESSURE AREA DEVELOPS OVER THE PACIFIC NORTHWEST. A DRY COLD
FRONT WILL SWEEP ACROSS CENTRAL CALIFORNIA LATER THIS AFTERNOON
AND EVENING WITH INCREASING BREEZES. MUCH COOLER WEDNESDAY WITH
BELOW NORMAL TEMPERATURES. CONTINUED COOL AND BREEZY THURSDAY
BEFORE A SLOW WARMUP BEGINS FOR THE WEEKEND.

&&

.DISCUSSION...
SHORTWAVE RIDGE OVER CENTRAL CA THIS MRNG WILL MOVE TO THE EAST
TODAY AS A DEEP/COOL UPPER LOW DIGS INTO THE PAC NW. TEMPS WILL
STILL BE ON THE WARM SIDE TODAY AHEAD OF THE SFC TROF...WHICH IS
EXPECTED THRU CENTRAL CA THIS AFTN AND EARLY EVE. INTERIOR SFC
GRADS INCREASE QUICKLY THIS AFTN...APCHG 16MB/S SFO-LAS. THIS
WILL BRING INCREASING WINDS TO THE KERN MTNS/DESERTS...ESP THRU
AND BELOW DESERT-FACING PASSES AND CANYONS. GUSTY WINDS IN THE SJV
ARE EXPECTED TO REMAIN BELOW ADZY LEVEL...BUT COULD BE SOME GUSTS
TO 30 MPH. STILL...DRIVERS ALONG THE I-5 CORRIDOR MAY EXPERIENCE
SOME PATCHY BLOWING DUST AT TIMES.

THE UPPER TROF AXIS IS EXPECTED TO LINGER ALONG THE WEST COAST
THRU THE REST OF THE WEEK. WED AND THURS WILL BE THE COOLEST DAYS
WITH TEMPS SOME 10-20 DEGS BELOW AVERAGE...AND CONTINUED BREEZY
AFTN/EVE HRS. THE TROF WILL BE DRY FOR CENTRAL CA...WITH ANY
PRECIP CONFINED TO FAR NRN CA AND OREG. FOR THE UPCOMING WEEKEND
MODELS DIVERGE ON SMALLER FEATURES WITH THE UPPER TROF. ON SUNDAY
THE GFS BRINGS ANOTHER S/WV THRU THE BOTTOM OF THE MEAN TROF
KEEPING TEMPS BELOW AVERAGE...WHILE THE ECMWF IS MUCH WEAKER AND
KEEPS HEIGHTS ON A SLOW RISE. CONFIDENCE FACTORS ARE FAIRLY HIGH
THRU SAT...BUT FALL OFF QUICKLY INTO THE NEW WEEK. WHILE SOME FORM
OF WEAK TROF WILL KEEP THE DRY ONSHORE FLOW GOING...SPLIT THE
DIFFERENCES ON TEMPS...BACK TO NEAR NORMAL MON/TUES.


&&

.AVIATION...
WIND GUSTS OF 35 KNOTS OR GREATER CAN BE EXPECTED ALONG THE
SIERRA CREST THROUGH AT LEAST 12Z WEDNESDAY AND THROUGH AND
BELOW THE MOUNTAIN PASSES OF KERN COUNTY BETWEEN 19Z TODAY
AND 05Z WEDNESDAY. OTHERWISE...VFR CONDITIONS WILL PREVAIL
ACROSS THE CENTRAL CALIFORNIA INTERIOR.

&&

.AIR QUALITY ISSUES...
ON TUESDAY MAY 21 2013... UNHEALTHY FOR SENSITIVE GROUPS IN KERN
COUNTY AND SEQUOIA NATIONAL PARK AND FOREST.
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 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 05-21      104:1892     56:1933     69:2001     42:1975
KFAT 05-22      104:1967     67:2010     71:1892     43:1909
KFAT 05-23      103:1967     65:1916     71:2000     44:1960

KBFL 05-21      103:1988     65:1903     71:2001     42:1902
KBFL 05-22      102:2001     68:2010     73:1967     36:1903
KBFL 05-23      107:1904     67:2010     73:2000     44:1903
&&

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

$$

PUBLIC...BINGHAM
AVN/FW...DURFEE
SYNOPSIS...BINGHAM

WEATHER.GOV/HANFORD