NOAA’s G-IV jet is currently stationed out in Hawaii to do a series of flights. The goal is to collect atmospheric data ahead of Iselle’s path. The data helps forecasters understand the environmental conditions around the hurricane. The data is also fed into computer forecast models to improve the prediction of the track and intensity of Iselle. Below is the proposed flight track. The G-IV will take off at 1730 UTC (1:30 PM Eastern or 7:30 AM Hawaii) from Honolulu, HI. The dots on the track represent the GPS dropwindsonde launch locations.