Spotted Wing Drosophila (SWD) degree-days (DDs) for selected western locations (updated daily)
Station Location (S to N) SWD DDs September 24, 2018
  Mtn View Moffett Fld CA   3017 DDs
19 days behind 2017
25 days behind 2016
8 days behind normal
  Medford OR   2786 DDs
12 days behind 2017
13 days behind 2016
DDs now EXCEED full year normal DDs
  Corvallis OR   2268 DDs
12 days behind 2017
10 days behind 2016
27 days ahead of normal
  Salem: McNary Field OR   2630 DDs
1 days ahead of 2017
8 days behind 2016
DDs now EXCEED full year normal DDs
  Aurora OR   2515 DDs
8 days behind 2017
11 days behind 2016
DDs now EXCEED full year normal DDs
  Forest Grove OR   2428 DDs
4 days behind 2017
3 days behind 2016
DDs now EXCEED full year normal DDs
  Vancouver Pearson Fld WA   2668 DDs
3 days ahead of 2017
7 days ahead of 2016
DDs now EXCEED full year normal DDs
  HOOD RIVER OR   2593 DDs
4 days ahead of 2017
4 days ahead of 2016
DDs now EXCEED full year normal DDs
  Kelso-Longview Airport WA   2368 DDs
12 days ahead of 2017
3 days behind 2016
DDs now EXCEED full year normal DDs
  Prosser Barricade Hanf WA   3110 DDs
1 days behind 2017
12 days behind 2016
36 days ahead of normal
  BurlingtonMount Vernon WA   1738 DDs
1 days ahead of 2017
13 days behind 2016
28 days ahead of normal
  Bellingham Int Apt WA   1872 DDs
5 days ahead of 2017
11 days behind 2016
DDs now EXCEED full year normal DDs
  Abbotsford: B. C. BC   2065 DDs
3 days ahead of 2017
9 days behind 2016
DDs now EXCEED full year normal DDs
  Agassiz Auto RePting S BC   2178 DDs
3 days ahead of 2017
7 days behind 2016
DDs now EXCEED full year normal DDs

In presenting this information, we wish to stress that errors can occur. Use the information with caution. Predictive models do not replace the need for monitoring in the field. If you observe conditions that differ substantially from model predictions, please contact Len Coop to determine if the model inputs were incorrect, if the model functioning or weather data are in error, or if the model is inappropriate for your conditions.