Lake County Weather Station Network
Powdery Mildew Stress
Tuesday August 21, 2018 valid 9:00am PDT
                     
    Yesterday's Powdery Mildew          
    Hours Index Pressure Powdery Mildew Stress  
    70-85F >95F points category 5 day trend (Tue 8/21 - Sat 8/25)  
North Upper Lake 4.3 0.0 0 light Severe stress will remain confined to the county's higher terrain areas as too much overnight cooling will continue to occur elsewhere.  
  Scotts Valley 2.1 2.3 0 light  
  Kelseyville 3.7 0.0 0 light  
  Kelseyville South 2.8 2.1 0 light  
  Bell Hill West 3.2 0.1 0 light  
  High Valley 3.7 2.8 0 light  
           
Hills High Valley Ridge 11.1 0.0 100 severe  
Ridgeline High 15.6 0.0 100 severe  
Ridgeline Low 7.5 0.1 80 severe  
Red Hills 1 12.0 0.0 100 severe  
           
South Middletown 3.1 1.1 0 light  
  Guenoc Valley 2.1 2.0 0 light  
  Lower Bohn 1.7 3.1 0 light  
  Upper Bohn North 2.8 2.6 0 light  
  Upper Bohn South 2.7 3.1 0 light  
  Napa Valley Basin 1.2 7.3 0 light  
  Pope Valley 3.3 0.0 0 light  
                     
              Meteorologist, Tom Cushman  
                     
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.