The engines are on as the G-IV hurricane hunter jet prepares to fly another synoptic surveillance mission. It will take-off around 0530 UTC (1:30AM local) from MacDill Air Force Base, Tampa, FL. The jet will fly around Hurricane Joaquin and will sample the upper/mid-level trough east of the storm. The data collected from these flights will go into our computer weather models to reduce the forecast uncertainty. Here is the proposed G-IV flight track. The dots along the flight track indicate the dropwindsonde launch locations.