This data set contains temperature, moisture, and wind profiles from the Modem GPSonde M10 radiosonde system operated by the Kenya Meteorology Department in Nairobi, Kenya during the HIGH impact Weather LAke SYstem (HIGHWAY) Project data collection period. A total of 256 2-second vertical resolution soundings are included in the data set. The data are in BUFR (Binary Universal Form for data Representation) format.