Spotted Wing Drosophila (SWD) degree-days (DDs) for selected Central US locations (updated daily)
Station Location (S to N) SWD DDs September 22, 2018
  College Stn Eerwood Fl TX   5958 DDs
9 days behind 2017
same as 2016
11 days ahead of normal
  Searcy Muni Apt AR   4726 DDs
4 days ahead of 2017
1 days behind 2016
28 days ahead of normal
  Bowling Green-Warren C KY   4495 DDs
12 days ahead of 2017
4 days ahead of 2016
DDs now EXCEED full year normal DDs
  Carbondale Murphysboro IL   4032 DDs
8 days ahead of 2017
same as 2016
39 days ahead of normal
  Quincy Reg-Baldwin Fld IL   3865 DDs
16 days ahead of 2017
10 days ahead of 2016
DDs now EXCEED full year normal DDs
  Champaign Urbana Univ IL   3578 DDs
7 days ahead of 2017
3 days ahead of 2016
DDs now EXCEED full year normal DDs
  Lafayette Purdue Univ IN   3395 DDs
21 days ahead of 2017
8 days ahead of 2016
DDs now EXCEED full year normal DDs
  Peoria Greater Peoria IL   3696 DDs
14 days ahead of 2017
2 days ahead of 2016
DDs now EXCEED full year normal DDs
  Rochelle Muni-Koritz F IL   2923 DDs
28 days ahead of 2017
same as 2016
DDs now EXCEED full year normal DDs
  Janesville-Rock County WI   3060 DDs
27 days ahead of 2017
1 days ahead of 2016
DDs now EXCEED full year normal DDs
  Prairie Du Chien Muni WI   2998 DDs
27 days ahead of 2017
4 days ahead of 2016
DDs now EXCEED full year normal DDs
  Baraboo Wisconsin Dell WI   2754 DDs
DDs now EXCEED full year 2017 DDs
8 days ahead of 2016
DDs now EXCEED full year normal DDs
  Fond Du Lac Co Apt WI   2716 DDs
24 days ahead of 2017
1 days behind 2016
DDs now EXCEED full year normal DDs
  Green Bay Austin Strau WI   2639 DDs
DDs now EXCEED full year 2017 DDs
9 days ahead of 2016
DDs now EXCEED full year normal DDs
  Minneapolis / Blaine MN   3055 DDs
DDs now EXCEED full year 2017 DDs
6 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.