Heat Index Pushes 115 Degrees in McLean
Here are tips for safety.
An excessive heat warning remains in effect for Fairfax County until 9 p.m. today. An excessive heat watch remains in effect from Saturday morning through Saturday evening. Heat index values will be between 110 and 115 degrees this afternoon; up to 110 degrees again on Saturday afternoon. Temperatures this afternoon and again Saturday afternoon will be around 100, Fairfax County officials said in an alert to residents. An excessive heat warning means that a prolonged period of dangerously hot temperatures will occur. An excessive heat watch means that a prolonged period of hot temperatures is expected. The combination of hot temperatures and high humidity will combine to create a dangerous situation in which heat illnesses are likely…