Effects of Synoptic Surveillance on model forecasts for
Hurricane Claudette.


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


Assessments for each forecast time at
July 11, 2003 18 Z
July 12, 2003 00 Z 06 Z 12 Z 18 Z
July 13, 2003 00 Z 06 Z 12 Z 18 Z
July 14, 2003 00 Z 06 Z 12 Z 18 Z
July 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 Claudette synoptic surveillance missions.

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

(a)
(b)

Figure 2. Forecast errors for the landfall of Hurricane Claudette near Matagorda Island, TX, 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.