Tuesday, July 23, 2019

Northern Ohio Heat Index History

After the recent extreme heat and humidity across the country where more than 85% of the 48 contiguous state had temperatures above 90 degrees with heat indices above 100 across 30 states, many have asked how this heat wave has compared to past heat waves here in northern Ohio.


HIGHEST Heat Index levels for every hour in Cleveland since 1948 (Hopkins Airport)


Highest Dew Point for each hour - Cleveland (Hopkins Airport)



For comparison, the LOWEST wind chill (feels like temperature) for each hour since 1948


What are the longest stretches with a heat index of 100+?


How about the years with the most hours with heat indices of 100+ since the late 1980s?

This summer refers to 2019

All of the 100+ heat index stretches greater than 4 hours each year since 1950


What is the all-time heat index record?

178 degrees!

Air temp: 108, dew point: 95 in Dhahran, Saudi Arabia, July 8, 2003


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