Reston, VA

(Updated at 2:19 p.m.)

An excessive heat watch is in effect for most of the day tomorrow (Friday),  Saturday (July 20), and Sunday (July 21), according to the National Weather Service.

Heat index values could hover around 110 to 115 degrees, with temperatures in the mid-90s to around 100 degrees.

Here’s more from the NWS alert:

Take extra precautions if you work or spend time outside. When possible, reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear light weight and loose fitting clothing when possible and drink plenty of water. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks

in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency – call 911.

Photo via NWS_BaltWash/Twitter


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