668
FXUS66 KHNX 290534
AFDHNX
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE HANFORD CA
1034 PM PDT MON SEP 28 2026
KEY MESSAGES
1. LOW PRESSURE TROUGH MOVES THROUGH CALIFORNIA TODAY, BRINGING
COOLER TEMPERATURES AND A POSSIBILITY FOR PRECIPITATION ALONG THE
SIERRA NEVADA CREST.
2. A RIDGE WILL BUILD OVER OUR AREA BY THE MIDDLE OF NEXT WEEK,
LEADING TO TEMPERATURES WELL ABOVE AVERAGE FOR AN EXTENDED
PERIOD OF TIME.
DISCUSSION
THE LOW PRESSURE TROUGH THAT BROUGHT IN TODAY'S COOLER
TEMPERATURES AND THE ACTIVITY OVER THE SIERRA NEVADA THIS
AFTERNOON WILL BEGIN TO MOVE EASTWARDS TONIGHT AND IS EXPECTED
TO BE FULLY OUT OF CALIFORNIA BY WEDNESDAY WITH A RIDGE BUILDING
IN ITS PLACE. THIS PATTERN CHANGE WILL LEAD TO A WARMING AND
DRYING TREND THAT WILL PUSH TEMPERATURES ACROSS OUR CWA WELL
ABOVE SEASONAL NORMS, AS MUCH AS 10 TO 15 DEGREES ABOVE NORMAL
BY THIS WEEKEND. THIS WOULD PUT THE SAN JOAQUIN VALLEY BACK INTO
THE UPPER 90'S
THESE TEMPERATURES WILL BRING MODERATE HEAT RISK BACK TO THE
VALLEY STARTING ON THURSDAY, BECOMING WIDESPREAD BY THIS
WEEKEND. THERE IS ALSO A 30-50% CHANCE FOR TRIPLE DIGITS ON
SUNDAY AND MONDAY IN THE BAKERSFIELD AREA AND MUCH OF THE
SOUTHWESTERN SIDE OF THE VALLEY. AND THIS RIDGE APPEARS TO NOT
BE MOVING ANY TIME SOON, SO THESE TEMPERATURES AND MODERATE HEAT
RISK IS LIKELY TO KEEP STEADY THROUGH EARLY NEXT WEEK. THE
CLIMATE PREDICTION CENTER ALSO HAS ABOVE NORMAL TEMPERATURES IS
BOTH THE 6 TO 10 AND 8 TO 14 DAY OUTLOOKS WITH OUR CWA IN THE
80-90% PROBABILITY CATEGORY.
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
NONE.
EW
WEATHER.GOV/HANFORD
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