743
FXUS66 KHNX 180545
AFDHNX
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE HANFORD CA
945 PM PST SAT JAN 17 2026
KEY MESSAGES
1. A DENSE FOG ADVISORY IS IN EFFECT UNTIL 12 PM PST. DENSE FOG
WILL DEVELOP EACH NIGHT AND MORNING IN THE SAN JOAQUIN VALLEY
THROUGH THE WEEKEND INTO NEXT WEEK.
2. EXPECT DRY AND WARM CONDITIONS ELSEWHERE WITH GUSTY EASTERLY
WINDS IN THE SIERRA NEVADA RIDGES AND KERN COUNTY MOUNTAINS AT
TIMES THIS WEEKEND INTO NEXT WEEK.
3. OVERNIGHT TEMPERATURES CONTINUE TO BE IN THE LOW 40S IN THE
SAN JOAQUIN VALLEY THIS WEEKEND AND THROUGH NEXT WEEK.
DISCUSSION
CALM WINDS AND COMPLETE RH RECOVERY DURING THE OVERNIGHT HOURS
CONTINUE TO PROVIDE IDEAL CONDITIONS FOR DENSE FOG. 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. HSI
CONTINUE TO INDICATED THAT WE ARE EXPECTED TO MEET OR EXCEED HIGH TO
VERY HIGH THRESHOLDS AGAIN TONIGHT AND INTO TOMORROW.
LONG RANGE MODELS ARE FINALLY STARTING TO BRING A WEAK PULSE TO THE
UPPER LEVEL FLOW BY THE END OF THE WORK WEEK. WHILE IT DOESN'T
APPEAR TO BE SUFFICIENT TO BREAK UP THE FOG, IT COULD BRING SOME
LIGHT SNOW SHOWERS TO THE HIGHER ELEVATIONS OF THE CWA.
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. 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 SUNDAY JANUARY 18 2026, UNHEALTHY FOR SENSITIVE GROUPS IN
FRESNO, KERN, KINGS, 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 NOON PST MONDAY FOR CAZ301>303-
305>307-309>312-314>316.
PUBLIC...TV
AVIATION....TV
WEATHER.GOV/HANFORD
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