429
FXUS66 KHNX 201114
AFDHNX
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE HANFORD CA
314 AM PST TUE JAN 20 2026
UPDATE
UPDATED AVIATION SECTION.
KEY MESSAGES
1. DENSE FOG EVERY MORNING THROUGH LATE WEDNESDAY MORNING.A
DENSE FOG ADVISORY IS IN EFFECT UNTIL NOON ON TUESDAY. FOG IN
THE VALLEY IS EXPECTED AT LEAST THROUGH WEDNESDAY.
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 CONTINUE TO DOMINATE THE FORECAST DISCUSSION AND WILL FOR THE
FORESEEABLE FUTURE. VISIBILITY IN THE SAN JOAQUIN VALLEY WILL FALL
TO LESS THAN A QUARTER MILE DURING THE EARLY MORNING HOURS IN SOME
AREAS; WITH WIDESPREAD VISIBILITIES BELOW ONE MILE. WITH LITTLE IN
THE WAY OF STEERING FLOW, PATCHY AREAS OF REDUCED VISIBILITIES WILL
LINGER INTO THE AFTERNOON. FSI CONTINUE TO INDICATED THAT WE
ARE EXPECTED TO MEET OR EXCEED HIGH TO VERY HIGH THRESHOLDS
AGAIN TONIGHT AND INTO TOMORROW.
A CHANCE FOR SOME MIXED PRECIP AND SNOW RETURNS TO THE FORECAST ON
THURSDAY AFTERNOON THOUGH IT WILL BE LIMITED TO MOSTLY THE EASTERN
EDGE OF THE CWA AND THE HIGHER ELEVATIONS. WHILE THIS LITTLE TROUGH
ISN'T ENOUGH TO GET OUT OF A FOGGY PATTERN FOR THE VALLEY, IT MAY BE
ENOUGH TO LIMIT HOW FAR VISIBILITY FALLS AS WELL AS HOW QUICKLY IT
CLEARS.
HIGH TEMPERATURES WILL BE IN THE 50S AND 60S THE REMAINDER OF THE
WEEKEND, WITH LOWS PLEASANTLY IN THE LOW TO MID 40S EXCEPT AT HIGHER
ELEVATIONS IN THE MOUNTAINS.
AVIATION
ANOTHER NIGHT OF LIFR VIS FOR THE TAF SITES WITH IMPROVEMENT TO
MVFR AFTER 20Z. HAZE NEVER REALLY CLEARS THE AREA, AND WHILE
VISIBILITY WILL IMPROVE, IT WILL DROP QUICKLY AFTER THE SUN
SETS, WITH CONSISTENT LIFR CONDITIONS EXPECTED THROUGH THE NIGHT
TIME HOURS. WINDS REMAIN LIGHT AND VARIABLE THROUGH THE TAF
CYCLE. VFR CONDITIONS PREVAIL FOR THE SIERRA NEVADA, COASTAL
RANGE, AND IN THE MOJAVE DESERT FOR THE NEXT 24 HOURS.
AIR QUALITY ISSUES
ON TUESDAY JANUARY 20 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 MEDIUM.
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>307-309>312-
314>316.
PUBLIC...TV
AVIATION....EW
WEATHER.GOV/HANFORD
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