Effects of Synoptic Surveillance on model forecasts for
Hurricane Jose.

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

Assessments for each forecast time at
October 19, 1999 18 Z
October 20, 1999 00 Z 06 Z 12 Z 18 Z
October 21, 1999 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 Jose synoptic surveillance mission.


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


(a)


(b)

Figure 2. Forecast errors for the landfall of Hurricane Jose at Antigua in the (a) cross- and (b) along-track directions for the no drop windsonde (NO or NN) and the all dropwindsonde (AL) runs for the GFS and GFDL models.


(a)


(b)

Figure 3. Forecast errors for the landfall of Hurricane Jose at Tortola 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.