Fig. 8 Track forecasts for the no dropwindsonde GFDL control (GFNO), the all dropwindsonde run (GFAL), the run with only targeted observations (GFTG), the run with data in and around Tropical Storm Bonnie (GFT1), and the data in and around the trough region (GFT2) for Tropical Storm Bonnie, 21 August 1998 0000 UTC. Forecast locations are plotted every 12 h except at 60 h.