Spotted Wing Drosophila (SWD) degree-days (DDs) for selected western locations (updated daily)
Station Location (S to N) SWD DDs August 14, 2018
  Mtn View Moffett Fld CA   2355 DDs
11 days behind 2017
21 days behind 2016
3 days behind normal
  Medford OR   2122 DDs
2 days behind 2017
5 days behind 2016
16 days ahead of normal
  Corvallis OR   1723 DDs
2 days ahead of 2017
1 days behind 2016
15 days ahead of normal
  Salem: McNary Field OR   2020 DDs
8 days ahead of 2017
1 days behind 2016
29 days ahead of normal
  Aurora OR   1935 DDs
4 days ahead of 2017
2 days behind 2016
18 days ahead of normal
  Forest Grove OR   1861 DDs
6 days ahead of 2017
1 days ahead of 2016
19 days ahead of normal
  Vancouver Pearson Fld WA   2040 DDs
9 days ahead of 2017
4 days ahead of 2016
18 days ahead of normal
  HOOD RIVER OR   2002 DDs
8 days ahead of 2017
4 days ahead of 2016
25 days ahead of normal
  Kelso-Longview Airport WA   1762 DDs
11 days ahead of 2017
2 days behind 2016
22 days ahead of normal
  Prosser Barricade Hanf WA   2427 DDs
3 days ahead of 2017
4 days behind 2016
13 days ahead of normal
  BurlingtonMount Vernon WA   1305 DDs
8 days ahead of 2017
4 days behind 2016
10 days ahead of normal
  Bellingham Int Apt WA   1431 DDs
11 days ahead of 2017
3 days behind 2016
39 days ahead of normal
  Abbotsford: B. C. BC   1607 DDs
13 days ahead of 2017
1 days ahead of 2016
29 days ahead of normal
  Agassiz Auto RePting S BC   1718 DDs
13 days ahead of 2017
3 days ahead of 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.