818
FXUS66 KHNX 211135 AAB
AFDHNX
AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE HANFORD CA
1015 PM PDT SUN APR 20 2025
UPDATE
UPDATED AVIATION SECTION.
KEY MESSAGES
1. WARMING TREND IN TEMPERATURES THROUGH TUESDAY.
2. TEMPERATURES WILL SEE A COOLING TREND STARTING MID-WEEK AHEAD
OF A DISTURBANCE MOVING INTO THE AREA NEXT WEEKEND.
3. LOCALLY BREEZY CONDITIONS EXPECTED ACROSS THE MOJAVE DESERT
FROM THE MIDDLE OF NEXT WEEK INTO NEXT WEEKEND.
DISCUSSION
WILL SEE SUNNY SKIES TODAY AS HIGH RESOLUTION SHORT RANGE
ENSEMBLE UPPER AIR ANALYSIS HAS RIDGING MOVING ONTO THE WEST
COAST TODAY. PROBABILITY OF EXCEEDANCE (POE) OF REACHING 85
DEGREES IS HIGH DURING THE EARLY PART OF THE WEEK AND THEN
TAPERS-OFF LATER IN THE WEEK. POE OF 85 DEGREES OR GREATER WILL
RANGE FROM 70%-90% THROUGH TUESDAY AND LOWER TO LESS THEN 20% BY
THURSDAY. CURRENT SURFACE PRESSURE GRADIENT FROM KSFO TO KLAS
SITS AT AROUND 1MB. THIS TRANSLATES INTO LIGHT WINDS ACROSS THE
DISTRICT. AS TEMPERATURES SEE A WARMING TREND, WINDS WILL REMAIN
LIGHT AND DIURNALLY DRIVEN. COOLING WILL BEGIN ON WEDNESDAY AS
TEMPERATURES DROP TO A FEW DEGREES BELOW SEASONAL NORMAL VALUES
(AROUND 75 DEGREES) BY FRIDAY AND SATURDAY.
LONGER RANGE UPPER-AIR ENSEMBLE ANALYSIS IS LEANING TOWARD THE
INTRODUCTION OF A TROUGH PATTERN NEAR THE WEEKEND. WHILE
WIDESPREAD PRECIPITATION IS VERY UNLIKELY ACROSS CENTRAL
CALIFORNIA, A DECREASING TEMPERATURES AND INCREASING WINDS HAVE
A HIGHER PROBABILITY OF OCCURRING. LONGER RANGE TEMPERATURES POE
ANALYSIS IS SHOWING A 50% CHANCE OF TEMPERATURES REACHING 75
DEGREES ON SATURDAY. WITH POE OF SEEING EVEN LOWER TEMPERATURES,
CONFIDENCE IS HIGH ON A GOOD COOL-DOWN BY NEXT WEEKEND. AT THE
SAME TIME, POE FOR WIND GUSTS WILL INCREASE AS PERCENTAGES RISE
TO 40%-60% DURING THE FRIDAY AND SATURDAY TIME FRAME. AT THE
MOMENT, SUNDAY WILL SEE LITTLE CHANGE IN TEMPERATURES AND WINDS
BEFORE A TRANSITION BACK TO WARMING CLOSER TO DAY-8 (MONDAY).
AVIATION
12Z:
VFR CONDITIONS WILL PREVAIL ACROSS THE CENTRAL CA INTERIOR THRU
06Z TUESDAY.
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 MEDIUM.
CERTAINTY LEVELS INCLUDE LOW...MEDIUM...AND HIGH. PLEASE VISIT
WWW.WEATHER.GOV/HNX/CERTAINTY.HTML FOR ADDITIONAL INFORMATION
AND/OR TO PROVIDE FEEDBACK.
HNX WATCHES/WARNINGS/ADVISORIES
NONE.
PUBLIC....MOLINA
AVIATION......SM
WEATHER.GOV/HANFORD
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page