Spotted Wing Drosophila (SWD) degree-days (DDs) for selected western locations (updated daily)
Station Location (S to N) SWD DDs December 11, 2018
  Mtn View Moffett Fld CA   3842 DDs
49 days behind 2017
52 days behind 2016
18 days behind normal
  Medford OR   3198 DDs
42 days behind 2017
49 days behind 2016
DDs now EXCEED full year normal DDs
  Corvallis OR   2627 DDs
40 days behind 2017
36 days behind 2016
DDs now EXCEED full year normal DDs
  Salem: McNary Field OR   3027 DDs
DDs now EXCEED full year 2017 DDs
33 days behind 2016
DDs now EXCEED full year normal DDs
  Aurora OR   2872 DDs
19 days behind 2017
46 days behind 2016
DDs now EXCEED full year normal DDs
  Forest Grove OR   2766 DDs
DDs now EXCEED full year 2017 DDs
DDs now EXCEED full year 2016 DDs
DDs now EXCEED full year normal DDs
  Vancouver Pearson Fld WA   3019 DDs
DDs now EXCEED full year 2017 DDs
DDs now EXCEED full year 2016 DDs
DDs now EXCEED full year normal DDs
  HOOD RIVER OR   2881 DDs
DDs now EXCEED full year 2017 DDs
DDs now EXCEED full year 2016 DDs
DDs now EXCEED full year normal DDs
  Kelso-Longview Airport WA   2666 DDs
DDs now EXCEED full year 2017 DDs
34 days behind 2016
DDs now EXCEED full year normal DDs
  Prosser Barricade Hanf WA   3392 DDs
7 days ahead of 2017
68 days behind 2016
DDs now EXCEED full year normal DDs
  BurlingtonMount Vernon WA   1949 DDs
DDs now EXCEED full year 2017 DDs
62 days behind 2016
DDs now EXCEED full year normal DDs
  Bellingham Int Apt WA   2097 DDs
DDs now EXCEED full year 2017 DDs
54 days behind 2016
DDs now EXCEED full year normal DDs
  Abbotsford: B. C. BC   2271 DDs
DDs now EXCEED full year 2017 DDs
53 days behind 2016
DDs now EXCEED full year normal DDs
  Agassiz Auto RePting S BC   2397 DDs
DDs now EXCEED full year 2017 DDs
36 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.