On the heels of the hottest day in Tampa history, 100 degrees on Sunday, Tampa International Airport (the official reporting site) hit another milestone Tuesday with a heat index of 119 at 3 p.m.

After more than a century of near-misses, Tampa finally breaks the triple-digit barrier in a historic heat wave.

More than 250 million people in the U.S.—nearly three quarters of the population—are experiencing moderate, major or extreme risk of heat effects on July 28, according to the National Oceanic and Atmospheric Administration’s National Weather Service.