136
FXUS66 KHNX 261739
AFDHNX
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE HANFORD CA
1039 AM PDT SUN JUL 26 2026
KEY MESSAGES
1. EXTREME HEAT WARNING CONTINUES FOR THE MOJAVE DESERT AND INDIAN
WELLS VALLEY THROUGH MONDAY EVENING. MAJOR HEATRISK EXPECTED WITH
AFTERNOON HIGHS 102 TO 110 DEGREES THROUGH MONDAY.
2. HIGH PRESSURE OVER THE REGION WILL MAINTAIN TEMPERATURES NEAR
SEASON AVERAGES FOR THE REMAINDER OF CENTRAL CALIFORNIA MONDAY
AND TUESDAY.
3. WARMING TREND BEGINS WEDNESDAY WITH MAJOR HEAT RISK BY FRIDAY
FOR THE MOJAVE SLOPES AND DESERT AND BY THE WEEKEND IN THE SAN
JOAQUIN VALLEY.
4. DRY CONDITIONS TO PREVAIL THROUGH THE WEEK.
DISCUSSION
THE RIDGE OF HIGH PRESSURE OVER MUCH OF THE WESTERN U.S.
CONTINUES TO DOMINATE WITH NEAR AVERAGE TEMPERATURES FOR MOST OF
THE SAN JOAQUIN VALLEY AND ABOVE AVERAGE TEMPERATURES IN THE
MOJAVE DESERT. HOWEVER, A TROUGH CURRENTLY IS OFF THE PACIFIC
NORTHWEST. THIS TROUGH WILL SLIDE OVER THE RIDGE MONDAY AND
TUESDAY BUT WILL HELP BRING TEMPERATURES DOWN A DEGREE OR TWO IN
THE VALLEY AND BY A FEW DEGREES IN THE MOJAVE.
THE BIG STORY FOR THE WEEK WILL BE THE WARMING TREND AS THE
RIDGE SLIDES WEST BEGINNING WEDNESDAY AND STRENGTHENING ONCE
THAT TROUGH SLIDES OVER IT. LATEST PROBABILITIES HAVE A 25 TO
50 PERCENT CHANCE OF A HIGH OF AT LEAST 105 ON FRIDAY SOUTH OF
MERCED BEFORE INCREASING TO 40 TO 70 PERCENT SOUTH OF MERCED
BOTH SATURDAY AND NEXT SUNDAY. THESE ABOVE AVERAGE TEMPERATURES
BRINGS A 30 TO 50 PERCENT CHANCE OF MAJOR HEAT RISK IN THE
VALLEY SOUTH OF MERCED ON SATURDAY AND SUNDAY. HOWEVER, THE
MOJAVE SLOPES AND DESERT WILL SEE AT LEAST 60 PERCENT CHANCE OF
MAJOR HEAT RISK ON FRIDAY BEFORE BEING AT 70 PERCENT AND HIGHER
ON SATURDAY AND NEXT SUNDAY. THE CPC PICKS THIS UP WITH A 60 TO
70 PERCENT CHANCE OF ABOVE AVERAGE TEMPERATURES FOR BOTH THE
6-10 AND 8-14 DAY OUTLOOKS.
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
EXTREME HEAT WARNING UNTIL 9 PM PDT MONDAY FOR CAZ337-339.
JPK
WEATHER.GOV/HANFORD
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