Effects of Synoptic Surveillance on model forecasts for
Tropical Storm Bonnie.

Quicktime movie of DLM wind analyses
Quicktime movie of DLM wind data initial increments

Assessments for each forecast time at
August 04, 2004 18 Z
August 05, 2004 00 Z 06 Z 12 Z
August 10, 2004 18 Z
August 11, 2004 00 Z 06 Z 12 Z

**Assessments for each forecast time at**
August 04, 2004				18 Z
August 05, 2004	00 Z	06 Z	12 Z
August 10, 2004				18 Z
August 11, 2004	00 Z	06 Z	12 Z

Figure 1a. Track forecast errors for the no dropwindsonde (NO or NN) and the all dropwindsonde (AL) runs for the GFS and GFDL models for the Tropical Storm Bonnie synoptic surveillance missions.

Figure 1b. Track forecast improvements for the GFS and GFDL models for the the Tropical Storm Bonnie synoptic surveillance mission.

(a)

(b)

Figure 2. Forecast errors for the landfall of Tropical Storm Bonnie at the Vincent/St. George Islands, FL, in the (a) cross- and (b) along-track directions for the no dropwindsonde (NO or NN) and the all dropwindsonde (AL) runs for the GFS and GFDL models.

Effects of Synoptic Surveillance on model forecasts for Tropical Storm Bonnie.

Figure 1a. Track forecast errors for the no dropwindsonde (NO or NN) and the all dropwindsonde (AL) runs for the GFS and GFDL models for the Tropical Storm Bonnie synoptic surveillance missions.

Figure 1b. Track forecast improvements for the GFS and GFDL models for the the Tropical Storm Bonnie synoptic surveillance mission.

Figure 2. Forecast errors for the landfall of Tropical Storm Bonnie at the Vincent/St. George Islands, FL, in the (a) cross- and (b) along-track directions for the no dropwindsonde (NO or NN) and the all dropwindsonde (AL) runs for the GFS and GFDL models.

Effects of Synoptic Surveillance on model forecasts for
Tropical Storm Bonnie.