Tracks of all 23 research flights with the NOAA Gulfstream-IV aircraft out of Honolulu, Hawaii during the El Niño Rapid Response campaign from January - March 2016. Research flights were meant to circle massive thunderstorm systems in the central and eastern tropical Pacific Ocean. An example GOES satellite image from February 25, 2016 is shown to give an example of the location and scale of the thunderstorms. Conditions varied daily. NOAA Climate.gov image based off image courtsey of Matt Newmann (CU/CIRES and NOAA/ESRL) and NASA.