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10:00am

Fri July 22, 2011
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Environmental Watchdog

Dangerous Heat in Forecast

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Credit Charles Bertram / Lexington Herald-Leader
Besides dealing with a high heat index, Jason Caldwell Jr. and Kyla Gerkey handled a "thermo cart" that produced 450-degree heat to install traffic stripes Thursday on Midland Avenue. It takes the high temperature for the plastic to bond to the blacktop.

It's so hot, air conditioners are melting. Or, more accurately, they are being overtaxed by the heat and humidity that has engulfed much of the nation and caused the National Weather Service in Louisville to issue an excessive heat warning for Kentucky. The warning is in effect until Saturday.