525  
FXUS66 KHNX 190545  
AFDHNX  
 
AREA FORECAST DISCUSSION  
NATIONAL WEATHER SERVICE HANFORD CA  
945 PM PST SUN JAN 18 2026  
 
 
   
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  
 
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. 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 WANT BRING A WEAK PULSE TO THE UPPER LEVEL  
FLOW BY THE END OF THE WORK WEEK WHICH 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. HAZE NEVER REALLY CLEARS THE AREA, AND WHILE VISIBILITY  
WILL IMPROVE, IT WILL DROP QUICKLY AFTER THE SUN SETS. 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 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...TV  
AVIATION....TV  
 
WEATHER.GOV/HANFORD  
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