Effects of Synoptic Surveillance on model forecasts for
26 August 1999 1200 UTC
EMILY.

QuickTime movie of DLM wind model forecasts
QuickTime movie of DLM wind data increments

Figure 1. NCEP 850 - 200 hPa mean wind analysis for 26 August 1999 1200 UTC (Tropical Storm Emily).

Figure 2. Track forecasts for the no dropwindsonde (NO or NN) and the all dropwindsonde (AL) runs for the AVN and GFDL models initialized on 26 August 1999 1200 UTC. The best track is shown in black.

Figure 3. Initial condition differences in the 850 - 200 hPa mean wind between the no and all dropwindsonde cases for 26 August 1999 1200 UTC.

Figure 4. 12-h forecast differences in the 850 - 200 hPa mean wind between the no and all dropwindsonde cases for 26 August 1999 1200 UTC.