253
FXUS66 KHNX 101926
AFDHNX
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE HANFORD CA
1126 AM PST WED DEC 10 2025
KEY MESSAGES
1. FOG AND LOW CLOUDS WILL CONTINUE EACH NIGHT AND MORNING ACROSS
THE SAN JOAQUIN VALLEY THIS WEEK. DENSE FOG WILL ALSO DEVELOP
AT TIMES IN THE LOWER SIERRA FOOTHILLS, COASTAL RANGES, AND THE
GRAPEVINE.
2. A GRADUAL WARMING TREND WILL OCCUR ACROSS THE MOUNTAINS AND
DESERT THIS WEEK, AS THE HIGH PRESSURE PATTERN CONTINUES OVER
THE REGION.
DISCUSSION
LITTLE CHANGE HAS BEEN SEEN IN THE LAST 24 HOURS ACROSS CENTRAL
CALIFORNIA. WITH THAT, COLD AND CLOUDY CONDITIONS WILL PERSIST
ACROSS THE SAN JOAQUIN VALLEY FOR YET ANOTHER DAY. THE RIDGE IS
NOW EXPECTED TO BUILD OVER THE WEST COAST IN THE COMING DAYS AND
ALLOWING THE CURRENT WEATHER PATTERN TO HOLD FIRM OVER THE
REGION. THEREFORE, DRY WEATHER IS EXPECTED THROUGH THE END OF
THE WEEK AND INTO THE WEEKEND.
OUTSIDE OF THE SAN JOAQUIN VALLEY, TEMPERATURES ACROSS THE
MOUNTAINS AND KERN DESERT WILL CONTINUE TO SEE A SLOW WARMING
TREND UNDER THE BUILDING RIDGE OF HIGH PRESSURE. OVER THE NEXT 2
TO 3 DAYS, PROBABILITY OF SEASONAL NORMAL VALUES ACROSS THE
VALLEY WILL STRUGGLE WITH LOW PERCENTAGE. ON THE CONTRARY,
OUTSIDE OF THE SAN JOAQUIN VALLEY, THE PROBABILITY OF REACHING
65 TO 70 DEGREES SIT BETWEEN 60 AND 80 PERCENT ABOVE THE LOW
CLOUDS. THEREFORE, CONFIDENCE IS HIGH THAT LITTLE CHANGE WILL BE
SEEN THROUGH THE WEEKEND.
IN THE REALM OF PRECIPITATION, ENSEMBLE MOISTURE ANALYSIS IS
STILL SHOWING THE BLOCKING HIGH MAINTAINING ITS POSITION OVER
THE EASTERN PACIFIC, AND PLACING THE STEERING CURRENT IN THE
DIRECTION OF THE PACIFIC NORTHWEST. WITH LITTLE CHANGE IN THE
NEXT 2-4 DAY PERIOD, CENTRAL CALIFORNIA WILL REMAIN DRY AND
COVERED IN LOW CLOUDS. LONGER RANGE ENSEMBLE ANALYSIS DO SHOW A
CHANGE IN THE PATTERN WITH A HINT TOWARD THE INTRODUCTION OF
PRECIPITATION AS EARLY AS NEXT TUESDAY (16 DEC 2025). YET,
UNCERTAINTY IS STILL TOO HIGH ON THE ACTUAL MAGNITUDE OF THE
NEXT STORM.
AVIATION
IFR TO MVFR CEILINGS AND VISIBILITIES ARE EXPECTED TO PREVAIL
FOR MUCH OF THE SAN JOAQUIN VALLEY DURING THE NEXT 24 HOURS.
LIFR CONDITIONS WILL ALSO PERSIST IN THE COASTAL RANGES, SIERRA
FOOTHILLS, AND THE KERN COUNTY MOUNTAINS DUE TO THE LOW STRATUS
DECK. OTHERWISE, VFR CONDITIONS WILL PREVAIL IN THE SIERRA
NEVADA AND IN THE KERN COUNTY MOUNTAIN AND DESERT AREAS OVER
THE NEXT 24 HOURS.
AIR QUALITY ISSUES
ON WEDNESDAY DECEMBER 10 2025, UNHEALTHY FOR SENSITIVE GROUPS
IN FRESNO, KERN, MADERA, AND TULARE COUNTIES. FIREPLACE/WOOD
STOVE BURNING STATUS IS: NO BURNING FOR ALL IN FRESNO, KERN,
AND MADERA COUNTIES. NO BURNING UNLESS REGISTERED IN KINGS,
MERCED, AND TULARE COUNTIES. BURNING DISCOURAGED IN KERN
(GREATER FRAZIER PARK AREA) AND SEQUOIA NATIONAL PARK AND
FOREST.
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
DENSE FOG ADVISORY UNTIL 11 AM PST THURSDAY FOR CAZ300-304-308-
313-316>322-334>336.
PUBLIC/AVIATION....MOLINA
WEATHER.GOV/HANFORD
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