A review of 82 global Category 4 and 5 TCs between 2012 and 2015 found 32 with the EEL signature, and that those TCs were statistically significantly stronger than TCs without the EEL signature. The mechanisms behind the EEL signature are not fully known yet, and this paper seeks to help improve the understanding of the EEL signature. Using data from the Statistical Hurricane Intensity Prediction Scheme (SHIPS), environmental parameters for Hurricanes Irma, Jose, and Maria are examined. SHIPS has previously been used to identify favorable environments for overshooting tops in TCs and to study how sea surface temperature and vertical wind shear impact lightning in TCs. Irma, Jose, and Maria provide a unique set of TCs to analyze, with all three occurring over a 30 day period in the same geographic region. Comparisons will be made between the environmental parameters for all three storms, in an effort to understand why Irma and Maria produced significant eyewall lightning while Jose did not.