991
FXUS66 KHNX 251130 AAA
AFDHNX
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE HANFORD CA
430 AM PDT SAT JUL 25 2026
UPDATE
UPDATED AVIATION SECTION.
KEY MESSAGES
1. EXTREME HEAT WARNING CONTINUES FOR THE MOJAVE DESERT AND
INDIAN WELLS VALLEY THROUGH MONDAY EVENING. MAJOR HEATRISK
EXPECTED WITH AFTERNOON HIGHS 108 TO 112 EACH DAY.
2. HIGH PRESSURE OVER THE REGION WILL MAINTAIN TEMPERATURES
NEAR SEASON AVERAGES FOR THE REMAINDER OF CENTRAL CALIFORNIA
BEFORE HOTTER CONDITIONS APPEAR LATE NEXT WEEK.
3. MAINLY DRY CONDITIONS PREVAIL UNTIL NEXT WEEK.
DISCUSSION
SEASONABLY WARM TEMPERATURES CONTINUE ACROSS THE CENTRAL VALLEY
UNTIL THE MIDDLE OF NEXT WEEK WITH TEMPERATURES IN THE UPPER 90S
TO NEAR 100 DEGREES. EVEN HOTTER TEMPERATURES WILL OCCUR IN THE
MOJAVE DESERT IN EASTERN KERN COUNTY, WHERE AN EXTREME HEAT
WARNING REMAINS IN EFFECT UNTIL 9 PM PDT MONDAY. MAXIMUM
TEMPERATURES IN THIS AREA AROUND 110 DEGREES WILL LAST THROUGH
THE WEEKEND INTO MONDAY WITH LOW TEMPERATURES AROUND 80 DEGREES.
A RIDGE OF HIGH PRESSURE DOMINATES THE WEATHER PATTERN AND WILL
STRENGTHEN FURTHER LATE NEXT WEEK. THE CHANCES OF TRIPLE DIGIT
READINGS IN THE SJ VALLEY ARE 35-45 PERCENT, MAINLY SOUTH OF
MERCED, UNTIL TUESDAY, BUT INCREASE TO 80-90 PERCENT ACROSS MUCH
OF THE VALLEY BY LATE NEXT WEEK. CHANCES OF HIGHS REACHING 105
DEGREES OR HOTTER IN MUCH OF THE VALLEY RISE TO 45-55 PERCENT BY
NEXT FRIDAY. THIS PATTERN PERSISTS INTO NEXT WEEKEND, OR JUST
IN TIME TO BEGIN AUGUST. CHANCES FOR PRECIPITATION WILL BE LESS
THAN 10 PERCENT FROM THIS WEEKEND UNTIL MUCH OF NEXT WEEK.
OVERALL, TEMPERATURES RISE TO SEVERAL DEGREES ABOVE SEASONAL
AVERAGES BY THIS TIME NEXT WEEK. A HIGH PROBABILITY OF ABOVE
AVERAGE TEMPERATURES IS SHOWN IN BOTH THE 6-10 DAY AND 8-14 DAY
OUTLOOK PERIODS, PER CPC.
AVIATION
A 5-15% CHANCE OF AFTERNOON THUNDERSTORMS ALONG THE SIERRA NEVADA
CREST FROM 20Z TODAY THROUGH 03Z SUNDAY. OTHERWISE, VFR CONDITIONS
WILL PREVAIL IN THE SAN JOAQUIN VALLEY 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
EXTREME HEAT WARNING UNTIL 9 PM PDT MONDAY FOR CAZ337-339.
BSO/CM
WEATHER.GOV/HANFORD
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