September 3, 2019 - The National Weather Service Hanford Office reports isolated thunderstorms are possible in the Southern Sierra Nevada, mainly along the crest, today during the afternoon and early evening hours.

Chances of afternoon/evening thunderstorms continue on Wednesday and Thursday in the Sierra Nevada, as well as the Kern County mountains and desert.

Frequent dangerous lightning, small hail, and wind gusts near 40 miles per hour are some of the hazards associated with strong thunderstorms.

In addition to these hazards, any thunderstorm can produce intense rainfall rates that lead to localized flooding.

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  Area Forecast Discussion 
  National Weather Service Hanford CA 
  238 AM PDT Tue Sep 3 2019 
   
  .SYNOPSIS... 
  A few strong thunderstorms may impact the Southern Sierra Nevada, 
  Kern County mountains, and Kern County desert each afternoon and 
  early evening from today through Thursday. High temperatures 
  today through Thursday will be five to eight degrees above normal 
  for this time of year. A cooling trend is expected this weekend. 
   
  && 
   
  .DISCUSSION... 
  An upper-level area of high pressure near the Four Corners will 
  slowly move eastward today through Thursday. Farther west, a 
  trough of low pressure aloft will remain just offshore of the west 
  coast of the United States today through Thursday. Southerly flow 
  between these two atmospheric features will continue to inject 
  monsoonal moisture northward into Central California today  
  through Thursday. A few strong thunderstorms could impact the  
  Southern Sierra Nevada, Kern County mountains, and Kern County  
  desert each afternoon and early evening from today through  
  Thursday. The most intense thunderstorms will produce heavy  
  rainfall, wind gusts near 45 mph, and half inch hail. Maximum  
  temperatures across Central California today through Thursday will 
  be five to eight degrees above normal for this time of year. 
   
  The aforementioned upper-level trough of low pressure will move 
  inland over the Pacific Northwest Thursday night. This trough of  
  low pressure aloft will progress northeastward across the Pacific  
  Northwest Friday. An upper-level area of low pressure will 
  approach the west coast of the United States Friday night and  
  Saturday. This area of low pressure aloft should move inland over 
  Northern California Saturday night. The upper-level area of low 
  pressure will quickly progress northeastward into Southern Idaho  
  Sunday. Another area of low pressure aloft may approach the  
  Pacific Northwest Sunday night and Monday. A rather significant  
  cooling trend will begin Friday and persist through the upcoming  
  weekend. By Sunday afternoon, high temperatures throughout Central 
  California will be around five degrees below normal for this time 
  of year.  

Source: NWS