Spotted Wing Drosophila (SWD) degree-days (DDs) for selected western locations (updated daily)
Station Location (S to N) SWD DDs July 20, 2018
  Mtn View Moffett Fld CA   1983 DDs
5 days behind 2017
18 days behind 2016
2 days ahead of normal
  Medford OR   1532 DDs
same as 2017
7 days behind 2016
11 days ahead of normal
  Corvallis OR   1213 DDs
3 days ahead of 2017
6 days behind 2016
10 days ahead of normal
  Salem: McNary Field OR   1445 DDs
8 days ahead of 2017
5 days behind 2016
19 days ahead of normal
  Aurora OR   1367 DDs
4 days ahead of 2017
8 days behind 2016
12 days ahead of normal
  Forest Grove OR   1304 DDs
5 days ahead of 2017
4 days behind 2016
12 days ahead of normal
  Vancouver Pearson Fld WA   1446 DDs
7 days ahead of 2017
1 days behind 2016
12 days ahead of normal
  HOOD RIVER OR   1408 DDs
7 days ahead of 2017
same as 2016
15 days ahead of normal
  Kelso-Longview Airport WA   1241 DDs
9 days ahead of 2017
8 days behind 2016
13 days ahead of normal
  Prosser Barricade Hanf WA   1795 DDs
4 days ahead of 2017
5 days behind 2016
11 days ahead of normal
  BurlingtonMount Vernon WA   905 DDs
5 days ahead of 2017
8 days behind 2016
6 days ahead of normal
  Bellingham Int Apt WA   981 DDs
5 days ahead of 2017
8 days behind 2016
20 days ahead of normal
  Abbotsford: B. C. BC   1101 DDs
9 days ahead of 2017
4 days behind 2016
14 days ahead of normal
  Agassiz Auto RePting S BC   1187 DDs
10 days ahead of 2017
3 days behind 2016
37 days ahead of normal

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.