Meteorologist Myles Henderson’s First Warning Forecast Extreme heat and humidity for the holiday weekend. Bigger rain chances to start next week. *** Extreme Heat Warning is in effect for SE VA and NE NC for Friday from 10 AM to 8 PM. Heat index values could hit 110+. *** Heat Advisory is in effect for the Outer Banks on Friday from Noon to 8 PM. Heat index values could hit 105+. Even hotter today with highs in the upper 90s, close to our record temperatures for this date.