145
FXUS66 KHNX 100547
AFDHNX
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE HANFORD CA
1047 PM PDT THU APR 9 2026
UPDATE
UPDATED KEY MESSAGES AND AVIATION SECTIONS.
KEY MESSAGES
1. CHANCE FOR UNSETTLED WEATHER AS PRECIPITATION, WINDS, AND
PERIODIC THUNDERSTORMS CONTINUE TOMORROW INTO THIS WEEKEND.
2. WIND ADVISORY FOR MOJAVE SLOPES FROM FRIDAY MORNING THROUGH
SUNDAY NIGHT.
3. WINTER STORM WARNING IN EFFECT FROM 5 PM FRIDAY THROUGH 11
PM SUNDAY FOR THE SIERRA NEVADA ABOVE 7,000 FEET.
DISCUSSION
TEMPERATURES ARE EXPECTED TO REMAIN ABOVE NORMAL FOR ONE MORE
DAY AS THE RIDGE BEGINS TO BREAK DOWN AND MOVE OUT TO THE EAST.
THESE HIGHS ARE EXPECTED TO DROP BELOW NORMAL BY SATURDAY AND
INTO THE MIDDLE OF NEXT WEEK. THESE TEMPERATURE DROPS ARE BEING
BROUGHT TO THE AREA BY NOT ONE, BUT TWO TROUGHS THAT WILL BE
MOVING THROUGH CENTRAL CALIFORNIA.
TROUGH ONE WILL BE MOVING INTO THE AREA TONIGHT INTO TOMORROW.
WITH IT, THE SIERRA NEVADA AND THE FOOTHILLS AREA HAS A BEST
CASE (90 PERCENT PROBABILITY) OF SEEING 0 PRECIPITATION OR MORE WHILE
THE WORST CASE (10 PERCENT PROBABILITY) CAN HAVE 0.34 INCHES.
THERE WILL BE ENOUGH ENERGY WITHIN THE AREA THAT A THUNDERSTORM
OR TWO CANNOT BE RULED OUT. SOME OF THESE THUNDERSTORMS COULD
BE STRONG. THIS IS IN LINE WITH THE STORM PREDICTION CENTER'S
GENERAL RISK FOR THUNDERSTORMS FOR THE NORTHERN PART OF OUR CWA.
TROUGH TWO IS LOOKING TO BE WETTER AND COLDER FOR THE ENTIRETY
OF OUR CWA. TEMPERATURE WISE, THE VALLEY IS GOING TO BE BELOW
NORMAL FOR THIS TIME OF YEAR. WE'RE LOOKING AT TEMPERATURES
BETWEEN 60 DEGREES (90 PERCENT PROBABILITY) AND 68 DEGREES
(10 PERCENT PROBABILITY) THROUGH MONDAY. ON WEDNESDAY, WE'LL
CREEP BACK UP WITH TEMPERATURES, BUT STILL REMAIN ON THE BELOW
NORMAL SIDE. SNOW LEVELS WILL FALL WITH THIS SYSTEM, WITH THEM
STARTING AT 8,000 FEET TO THE LEVELS DROPPING DOWN TO 4,500 AT
THE END OF THE EVENT. LIGHT ACCUMULATION IS POSSIBLE IN YOSEMITE
VALLEY, BUT THIS IS LOW PROBABILITY OF HAPPENING (30-40
PERCENT). ELEVATIONS ABOVE YOSEMITE VALLEY CAN SEE MODERATE (5
TO 10 INCHES) SNOWFALL.THE HIGHEST PEAKS OF THE SIERRA NEVADA
CAN SEE 7 INCHES (LOW END CHANCE) UP TO 21 INCHES (HIGH END
CHANCE).
THE STORM IS EXPECTED TO MOVE OUT TO THE EAST AND A RIDGE IS
LIKELY TO BUILD ON TUESDAY FOLLOWING THIS STORM.
AVIATION
VFR CONDITIONS PREVAILING FOR THE NEXT 24 HOURS. GUSTS ABOVE 40
KNOTS EXPECTED ACROSS THE MOJAVE SLOPES IN THE LEE SIDE OF THE
TEHACHAPI RANGE STARTING FRIDAY MORNING AT 18Z.
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
WIND ADVISORY FROM 11 AM FRIDAY TO 11 PM PDT SUNDAY FOR CAZ338.
WINTER STORM WARNING FROM 5 PM FRIDAY TO 11 PM PDT SUNDAY FOR
CAZ323-326>328-330-331.
PUBLIC...BB
AVIATION....EW
WEATHER.GOV/HANFORD
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