139  
WWUS76 KSTO 041756  
NPWSTO  
 
URGENT - WEATHER MESSAGE  
NATIONAL WEATHER SERVICE SACRAMENTO CA  
956 AM PST WED FEB 4 2026  
 
CAZ019-041900-  
/O.EXP.KSTO.FG.Y.0020.000000T0000Z-260204T1800Z/  
NORTHERN SAN JOAQUIN VALLEY-  
INCLUDING THE CITIES OF MODESTO AND STOCKTON  
956 AM PST WED FEB 4 2026  
   
..DENSE FOG ADVISORY WILL EXPIRE AT 10 AM PST THIS MORNING
 
 
VISIBILITIES ARE SLOWLY IMPROVING ACROSS THE NORTHERN SAN JOAQUIN  
VALLEY. LINGERING PATCHES OF DENSE FOG WILL BE POSSIBLE OVER THE  
NEXT 1-2 HOURS. ANOTHER ROUND OF DENSE FOG MAY DEVELOP AGAIN TONIGHT  
INTO THURSDAY MORNING. SLOW DOWN AND USE LOW-BEAM HEADLIGHTS IF FOG  
IS ENCOUNTERED WHILE DRIVING.  
 

 
 
FOR MORE INFORMATION, VISIT US AT WWW.WEATHER.GOV/STO/  
 
KH  
 
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