Effects of Synoptic Surveillance on model forecasts for
Hurricane Erika.

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

Assessments for each forecast time at

August 14, 2003				18 Z
August 15, 2003	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 Hurricane Erika synoptic surveillance missions.

Figure 1b. Track forecast improvements for the GFS and GFDL models for the the Hurricane Erika synoptic surveillance mission.

Figure 2. Forecast errors for the landfall of Hurricane Erika near Boca San Rafael, Mexico, 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.