130
FXUS66 KHNX 182358
AFDHNX
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE HANFORD CA
358 PM PST SUN JAN 18 2026
UPDATE
UPDATED AVIATION AND AIR QUALITY SECTIONS.
KEY MESSAGES
1. A DENSE FOG ADVISORY REMAINS IN EFFECT UNTIL 12 PM PST MONDAY.
DENSE FOG WILL DEVELOP EACH NIGHT AND MORNING IN THE SAN
JOAQUIN VALLEY THROUGH THIS WEEK.
2. EXPECT DRY AND WARM CONDITIONS ELSEWHERE INTO NEXT WEEK.
3. OVERNIGHT TEMPERATURES CONTINUE TO BE IN THE LOW 40S IN THE
SAN JOAQUIN VALLEY THIS WEEK.
DISCUSSION
ANOTHER FOGGY MORNING IS CURRENTLY TAKING PLACE IN THE SAN
JOAQUIN VALLEY. EXPECT PARTIAL CLEARING AT MOST VALLEY LOCATIONS
THIS AFTERNOON WITH A RETURN TO DENSE FOG BY EARLY THIS EVENING
OR AROUND SUNSET. LATEST HIGH RESOLUTION MODEL GUIDANCE SHOWS THE
PROBABILITY FOR VISIBILITY BELOW 1/4 MILE IN THE VALLEY IS NEAR
100 PERCENT ONCE AGAIN FROM LATE TONIGHT UNTIL LATE MONDAY
MORNING. ELSEWHERE, ABOVE AVERAGE DAYTIME TEMPERATURES WILL
CONTINUE, ALTHOUGH THE CHANCES FOR HIGHS IN THE 70S IN THE KERN
COUNTY DESERT AND SIERRA NEVADA FOOTHILLS ARE ABOUT 25-35
PERCENT FOR THE NEXT COUPLE DAYS. HIGH PRESSURE WILL REMAIN IN
CONTROL FOR THE NEXT SEVERAL DAYS.
THIS HIGH PRESSURE PATTERN ALONG WITH THE VALLEY FOG WILL LAST
UNTIL NEXT WEEKEND WITH MINOR CHANGES IN TEMPERATURES. LATEST
CPC OUTLOOKS CONTINUE TO FAVOR ABOVE AVERAGE TEMPERATURES FOR
BOTH THE 6-10 DAY AND 8-14 DAY PERIODS. A SLIGHT TILT IN THE
ODDS (33-40 PERCENT CHANCE) TOWARDS BELOW AVERAGE PRECIPITATION
CONTINUES FOR THE 6-10 DAY PERIOD, BUT SHIFTS TO TOWARDS ABOVE
AVERAGE PRECIPITATION FOR THE 8-14 DAY PERIODS. PERHAPS WE'LL
SEE A PATTERN CHANGE, INCLUDING SOME PRECIPITATION, SOMETIME
NEXT WEEK.
AVIATION
IFR TO MVFR CONDITIONS REMAIN ACROSS THE SAN JOAQUIN VALLEY
THIS AFTERNOON, BUT WILL GRADUALLY DETERIORATE TO IFR/LIFR AFTER
02Z MONDAY. THESE CONDITIONS WILL PREVAIL THROUGH AT LEAST 18Z,
WITH MVFR CONDITIONS RETURNING BETWEEN 21Z MONDAY AND 00Z
TUESDAY. OTHERWISE, VFR CONDITIONS WILL PREVAIL ACROSS THE
SIERRA NEVADA, COASTAL RANGE, AND IN THE MOJAVE DESERT FOR THE
NEXT 24 HOURS.
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 MONDAY FOR CAZ301>303-
305>307-309>312-314>316.
PUBLIC...BSO
AVIATION....SM
WEATHER.GOV/HANFORD
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