Effects of Synoptic Surveillance on model forecasts for
Hurricane Ophelia.

Assessments for each forecast time at

September 08, 2005				18 Z
September 09, 2005	00 Z	06 Z	12 Z	18 Z
September 10, 2005	00 Z	06 Z	12 Z	18 Z
September 11, 2005	00 Z	06 Z	12 Z	18 Z
September 12, 2005	00 Z	06 Z	12 Z	18 Z
September 13, 2005	00 Z	06 Z	12 Z	18 Z
September 14, 2005	00 Z	06 Z	12 Z	18 Z
September 15, 2005	00 Z	06 Z	12 Z

Fig 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 Ophelia synoptic surveillance missions.

Fig 1b. Track forecast improvements for the GFS and GFDL models for the Hurricane Ophelia synoptic surveillance missions.