051
FXUS66 KHNX 231835
AFDHNX
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN JOAQUIN VALLEY - HANFORD CA
1135 AM PDT SUN SEP 23 2018
SYNOPSIS
SLIGHTLY COOLER WEATHER TODAY, AND THEN WE WILL TRANSITION BACK
INTO THE MID 90'S FOR THE NEXT FEW DAYS IN THE LOWER ELEVATIONS
OF THE SAN JOAQUIN VALLEY AS HIGH PRESSURE BUILDS. THIS WEEKEND,
TEMPERATURES WILL FALL BACK TO NORMAL. NO RAIN IS FORECAST FOR
THIS FORECAST PERIOD.
DISCUSSION
PER LATEST GOES-17 SATELLITE IMAGERY, SOME CIRRUS CLOUDS CAN BE
SEEN TODAY AHEAD OF A WEAK UPPER-LEVEL DISTURBANCE. THE TROUGH
TODAY IS ALLOWING FOR A SLIGHT COOL DOWN FOR MOST OF CENTRAL
CALIFORNIA. HI-RES MODEL GUIDANCE IS SUGGESTING A SLIGHT INCREASE
IN THE GRADIENTS ASSOCIATED WITH THE TROUGH TONIGHT, WHICH SHOULD
YIELD SOME DECENTLY STRONG WIND GUSTS IN PACHECHO PASS AS WELL AS
THE MOUNTAIN PASSES IN KERN COUNTY, BUT WINDS WILL NOT BE AT
WIND-ADVISORY CRITERIA LEVEL. AFTER TODAY, TEMPERATURES WILL
START TO HEAT BACK UP AS HIGH PRESSURE ALOFT BUILDS OVER THE CWA
-- MOST OF THE VALLEY WILL BE IN THE LOW TO MID 90'S TOMORROW.
IN FACT, HIGH TEMPERATURES FOR MOST OF THE VALLEY WILL NOT VARY
BY MUCH MORE THAN A DEGREE OR TWO FOR THE WORK WEEK. THIS WILL BE
DUE TO THE REX BLOCK PATTERN THAT IS FORECAST BY MOST GLOBAL
MODELS TO OCCUR OFF OF THE WEST COAST. THIS RIDGE/TROUGH DIPOLE
SYSTEM IS NOT PROGGED TO MOVE MUCH THROUGH FRIDAY, THUS NO MAJOR
CHANGES IN UPPER-AIR ARE FORECAST TO OCCUR OVER OUR CWA, GIVING US
RATHER STAGNANT WEATHER FOR THE NEXT SEVERAL DAYS. AFTER FRIDAY,
THE BLOCK WILL DRIFT SLOWLY TO THE EAST, AND 500 MB HEIGHTS ACROSS
THE WEST COAST WILL FALL, GIVING US A CHANCE AT SOME DECENT
SYNOPTIC COOLING. AT THIS TIME, NO SIGNIFICANT POP'S ARE BEING
SEEN BY THE ECMWF OR THE GFS, SO HAVE OPTED TO REMAIN DRY FOR THE
ENTIRE CWA FOR THIS FORECAST PERIOD (THROUGH NEXT SUNDAY).
AVIATION
VFR CONDITIONS CAN BE EXPECTED THROUGHOUT THE CENTRAL CA INTERIOR
FOR AT LEAST 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.
CERTAINTY LEVELS INCLUDE LOW...MEDIUM...AND HIGH. PLEASE VISIT
WWW.WEATHER.GOV/HNX/CERTAINTY.PHP FOR ADDITIONAL INFORMATION
AN/OR TO PROVIDE FEEDBACK.
HNX WATCHES/WARNINGS/ADVISORIES
NONE.
PUBLIC...BOLLENBACHER
AVN/FW...BOLLENBACHER
SYNOPSIS...BOLLENBACHER
WEATHER.GOV/HANFORD
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page