Projected rainfall totals for Mariposa: 0.25" to 0.50"

Projected rainfall totals for Oakhurst: 0.25" to 0.50"

Projected rainfall totals for Yosemite Valley: 0.50" to 1.00"

December 17, 2020 - The National Weather Service Hanford Office reports a storm system will impact Central California Today.

Precipitation amounts will be mostly light, but 6-9 inches of snow is expected to accumulate above 5000 feet across the Central Sierra Nevada.

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  Area Forecast Discussion 
  National Weather Service Hanford CA 
  330 AM PST Thu Dec 17 2020 
   
   
  .SYNOPSIS...A storm system will bring wet weather to much 
  of the district today along with gusty winds in the Kern county  
  mountains and desert this afternoon and evening. A clearing trend 
  will occur in the wake of this system tonight. A ridge of high  
  pressure will build into California by Friday and remain in  
  control through the Christmas holiday. Mostly clear skies can be  
  expected during this time with areas of late night and morning  
  fog in the San Joaquin Valley. 
   
  && 
   
  .DISCUSSION... 
  Regional radar and satellite loops are showing the well advertised 
  cold front just entering Merced county as of this writing. The  
  front will be passing through CENCAL this morning with some  
  possible clearing in the SJV later this afternoon. Unfortunately,  
  there is not much lower elevation rain and mountain snow with the 
  system. There will be enough to wet the roads, but as you get  
  into Kern county, it will be drier. We are expecting winds to pick 
  up across the Kern County mountains later today as the front  
  pushes through.  
   
  We have a winter weather advisory out for the Yosemite National 
  Park area above 5500 feet for snow up to 9 inches through this 
  afternoon. Cold air behind the system will allow our temepratures 
  to drop below freezing overnight for the next several days into 
  early next week. The active storm track will remain well to our  
  north as a ridge of high pressure returns and will shun away any  
  systems that try to move into CENCAL through the forecast period  
  and beyond. We will have a system move through Nevada on Tuesday  
  night that could bring some winds across parts of the CENCAL  
  interior. A full amplitude ridge will block any weather systems  
  along the west coast through the Christmas holiday week. A closed  
  low center off of Baja will set up a Rex Block pattern later next  
  week. Temperatures will try to moderate some by the end of the  
  forecast period with dry conditions expected. 

Source: NWS