279
FXUS66 KHNX 261749
AFDHNX
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE HANFORD CA
1049 AM PDT SAT SEP 26 2026
KEY MESSAGES
1. MINOR HEAT RISK THROUGH THE WEEKEND INTO MONDAY AS
TEMPERATURES COOL TO EARLY FALL NORMALS. TEMPERATURES CLIMB
BEGINNING TUESDAY.
2. LOW PRESSURE TROUGH APPROACHES CALIFORNIA SUNDAY, BRINGING
COOLER TEMPERATURES AND A POSSIBILITY FOR PRECIPITATION ALONG
THE SIERRA NEVADA MOUNTAINS.
3. LOW BUT NOTABLE CHANCES (10-20%) FOR THUNDERSTORMS ACROSS
THE SIERRA NEVADA MONDAY.
4. LAKE WIND ADVISORIES FOR LAKE ISABELLA AND SAN LUIS RESERVOIR
THROUGH LATE THIS EVENING.
DISCUSSION
THIS MORNING, WE HAD HIGH CLOUDS ADVECT IN FROM THE SOUTHWEST
THANKS IN PART TO A DISTURBANCE OVER THE PACIFIC NORTHWEST. THIS
DISTURBANCE ALSO HAS BROUGHT A SLIGHT COOLDOWN IN TEMPERATURES
FROM THE NEAR TRIPLE DIGITS WE HAD ON THURSDAY. HOWEVER, WITH
THAT DISTURBANCE LIFTED MORE TOWARDS CANADA, THE ONSHORE FLOW
BECOMES MORE PROMINENT TODAY LEADING TO TEMPERATURES TO CONTINUE
TO DROP SLIGHTLY. WINDS ALSO PICK UP WITH THE ONSHORE FLOW ALOFT
THAT LAKE WIND ADVISORIES HAVE BEEN ISSUED FOR THIS AFTERNOON
AND EVENING FOR LAKE ISABELLA AND SAN LUIS RESERVOIR.
TEMPERATURES PLUMMET EVEN MORE SUNDAY AND MONDAY AS ANOTHER
TROUGH SLIDES INTO OUR AREA. RH VALUES IMPROVE WITH THIS TROUGH
THANKS TO SOME MOISTURE BEING ADVECTED FROM HURRICANE ODALYS.
MONDAY WILL BE VERY FALL-LIKE WITH A 85 PERCENT CHANCE AND
HIGHER OF HIGHS BELOW 85 DEGREES. THE SIERRA NEVADA HAS A 10 TO
20 PERCENT CHANCE OF THUNDERSTORMS ON MONDAY, HOWEVER, THE
VALLEY HAS A 5 PERCENT CHANCE OR LESS OF SEEING ANY REAL
PRECIPITATION WITH THIS SYSTEM. WINDS ALSO PICK UP WITH THIS
SYSTEM. SUNDAY SEES WIND GUSTS PICK UP ESPECIALLY IN EASTERN
KERN COUNTY THAT ANOTHER LAKE WIND ADVISORY WILL BE ISSUED FOR
LAKE ISABELLA. MOJAVE SEES A 45 PERCENT CHANCE OF 45 MPH GUSTS
ON SUNDAY.
THE TROUGH SLIDES OUT ON TUESDAY AND A RIDGE BUILDS IN AND WILL
STRENGTHEN THROUGH THE WEEK BRINGING TEMPERATURES BACK UP.
THURSDAY THROUGH NEXT SATURDAY HAS A 45 TO 55 PERCENT CHANCE OF
HIGHS OF AT LEAST 95 DEGREES IN THE VALLEY. AS THE TREND HAS
BEEN HOLDING FOR MANY WEEKS, THE CPC CONTINUES TO FAVOR ABOVE
AVERAGE TEMPERATURES. THE 6-10 DAY OUTLOOK HAS A 50 TO 60
PERCENT CHANCE AND THE 8-14 DAY OUTLOOK JUMPS TO 60 TO 70
PERCENT CHANCE OF ABOVE AVERAGE TEMPERATURES.
AVIATION
VFR CONDITIONS WILL PREVAIL FOR 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 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
LAKE WIND ADVISORY FROM 5 PM THIS AFTERNOON TO 11 PM PDT THIS
EVENING FOR CAZ300.
LAKE WIND ADVISORY FROM 2 PM THIS AFTERNOON TO 8 PM PDT THIS
EVENING FOR CAZ332.
JPK
WEATHER.GOV/HANFORD
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page