Lake County Weather Station Network
  Powdery Mildew Stress
  Sunday August 20, 2017 valid 9:00am PDT
                     
    Yesterday's Powdery Mildew          
    Hours Index Pressure Powdery Mildew Stress  
    70-85F >95F points category 5 day trend (Sun 8/20 - Thu 8/24)  
North Upper Lake 3.8 0.0 0 light Stress has decreased to light for most valley locations of the county, where it will remain light through the weekend. Stress levels may come down a bit at higher elevations early next week as overnight lows cool off a bit more.  
  Scotts Valley 2.0 0.2 0 light  
  Kelseyville 4.1 0.0 0 light  
  Kelseyville South 2.9 0.0 0 light  
  Bell Hill West 3.5 0.0 0 light  
           
Hills Red Hills 1 10.0 0.0 100 severe  
  Red Hills 2 -n/a- -n/a- --- -----  
  Red Hills 3 -n/a- -n/a- --- -----  
           
South Middletown 2.8 0.3 50 moderate  
  Guenoc Valley 3.2 1.0 0 light  
  Lower Bohn 2.8 0.3 0 light  
  Upper Bohn North 4.3 0.4 0 light  
  Upper Bohn South 2.2 1.3 0 light  
  Napa Valley Basin 4.2 3.1 0 light  
  Pope Valley 4.5 0.0 0 light  
                     
              Meteorologist, Zach Graff  
                     
NOTE: The Gubler Powdery Mildew Model now active for all Lake County weather stations      
                     
not active - means the criteria necessary to activate the Powdery Mildew Model have not been met yet.    
That is - you must have 3 consecutive days with 6 or more consecutive hours between 70 and 85F.    
If you get 2 days, and then on the 3rd day you get <6 consecutive hours between 70-85F, the model    
resets back to zero and you start all over again.