011
FXUS66 KHNX 191729
AFDHNX
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE HANFORD CA
929 AM PST MON JAN 19 2026
KEY MESSAGES
1. DENSE FOG EVERY MORNING THROUGH LATE WEDNESDAY MORNING.
2. CHANCE OF SNOW ABOVE 7,000 FEET IN THE SIERRA NEVADA
THURSDAY AND FRIDAY. OTHERWISE, DRY CONDITIONS WILL PREVAIL FOR
THE WEEK.
3. OVERNIGHT TEMPERATURES CONTINUE TO BE IN THE LOW TO MID 40S
IN THE SAN JOAQUIN VALLEY THIS WEEK.
DISCUSSION
FOG DEVELOPED VERY EARLY LAST NIGHT AND CONTINUED TO PERSIST
THROUGH MUCH OF THIS MORNING. HOWEVER, WE ANTICIPATE SOME
LIFTING BY THIS AFTERNOON AND CLEARING BEFORE IT REFORMS AGAIN
LATER THIS EVENING. THIS FOGGY PATTERN IS THANKS TO A STRONG
RIDGE OF HIGH PRESSURE OVER THE PACIFIC COAST AND A VERY COLD
DEEP TROUGH OVER THE EASTERN CONUS.
HOWEVER, LATEST ENSEMBLES AGREE THAT THE RIDGE WILL SLOWLY
BREAK DOWN THROUGH THE WEEK AND BY LATE WEDNESDAY AS A CUTOFF
LOW SLIDES UNDER THE RIDGE INTO CALIFORNIA AND A TROUGH SLIDES
IN FROM ALASKA AND CANADA AND MERGE. THIS SYSTEM BRINGS A 5 TO
10 PERCENT CHANCE OF PRECIPITATION IN THE VALLEY. FOR THE SIERRA
NEVADA, THERE IS A 10 TO 30 PERCENT CHANCE OF A TRACE OF SNOW
CLOSER TO YOSEMITE DOWN TO FRESNO. HOWEVER, THERE IS A 25 TO 40
PERCENT CHANCE OF A TRANCE OF SNOW SOUTH OF FRESNO INTO TULARE
COUNTY. SNOW LEVELS WITH THIS SYSTEM WILL BE ABOVE 7,000 FEET.
THIS TROUGH WILL REDUCE THE CHANCES OF FOG DUE TO MIXING BUT
THE POTENTIAL WILL STILL REMAIN FOR FOG.
DRY CONDITIONS AND ABOVE AVERAGE HIGH TEMPERATURES WILL BE
DOMINANT THROUGH THE WEEKEND INTO NEXT WEEK. LATEST CPC OUTLOOKS
HAVE A 60 TO 70 PERCENT CHANCE OF ABOVE AVERAGE TEMPERATURES IN
THE 6-10 DAY OUTLOOK AND A 70 TO 80 PERCENT CHANCE IN THE 8-14
DAY OUTLOOK. HOWEVER, THE CPC HAS A 33 TO 40 PERCENT CHANCE OF
BELOW AVERAGE PRECIPITATION FOR MOST OF THE AREA IN BOTH THE
6-10 AND 8-14 DAY OUTLOOKS
AVIATION
LIFR TO IFR CONDITIONS WILL DOMINATE DUE TO THE FOG UNTIL 20-21Z
WHEN MOSTLY MVFR TO IFR CONDITIONS PREVAIL. HOWEVER, AFTER 03Z,
LIFR TO IFR CONDITIONS WILL RETURN ESPECIALLY IN AREAS LIKE
VISALIA AND HANFORD FIRST AND WILL PERSIST THROUGH THE OVERNIGHT
HOURS. VFR CONDITIONS WILL PREVAIL FOR THE NEXT 24 HOURS FOR THE
SIERRA NEVADA AND THE MOJAVE SLOPES AND DESERT.
AIR QUALITY ISSUES
ON MONDAY JANUARY 19 2026, UNHEALTHY FOR SENSITIVE GROUPS IN
KERN COUNTY. FIREPLACE/WOOD STOVE BURNING STATUS IS:
NO BURNING FOR ALL IN KERN COUNTY. NO BURNING UNLESS REGISTERED
IN FRESNO, KINGS, MADERA, 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 NOON PST TODAY FOR CAZ301>303-305>307-
309>312-314>316.
JPK
WEATHER.GOV/HANFORD
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