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


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


Assessments for each forecast time at
September 06, 2002 18 Z
September 07, 2002 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 Fay synoptic surveillance mission.

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

(a)
(b)

Figure 2. Forecast errors for the landfall of Tropical Storm Fay at Port O'Connor, 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.


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