...HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM THIS MORNING TO 8 PM EDT THURSDAY... * WHAT...Heat index values up to 99 expected. * WHERE...In Delaware, New Castle County. In New Jersey, Camden, Gloucester, and Northwestern Burlington Counties. In Pennsylvania, Delaware and Philadelphia Counties. * WHEN...From 11 AM this morning to 8 PM EDT Thursday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke. &&