We have two additional flights set to take off this afternoon to sample Hurricane Irma. First up is the G-IV hurricane hunter jet. The jet flew earlier this morning and it will fly again taking off at 1:30 PM ET (1730 UTC) from Lakeland, FL. Below is the planned flight plan with dots indicating the dropwindsonde launch locations.
The P3 aircraft that goes inside the hurricane will take off at 3 PM ET (1900 UTC) for an eight-hour mission. Here is the planned flight track. The dots on the flight track below (shown in green) represent the P3 aircraft turn points. The red dots in the figure show the locations that launch weather balloons twice a day while the purple dots are the locations that launch balloons once a day.