The combination of well above normal temperatures and high humidity will produce heat index values up to 110 degrees for a few hours this afternoon. A few locations may briefly experience heat index values a degree or two higher (up to 113 degrees). The favored areas for higher heat index values include portions of Hidalgo and Starr counties. If spending time outside today, drink plenty of water, wear light weight and light colored clothing, and take frequent breaks from the heat. Young children and pets should never be left unattended in vehicles.