 Children and the elderly are even more susceptible and need to take extra precautions. To help keep cool, drink plenty of water, stay in the shade as much as possible, and, if you must be outside, take occasional breaks in an air-conditioned building to cool down. Watch out for the warning signs of heat stroke, including dizziness, nausea, headache, and disorientation. An excessive heat warning continues until 8 p.m. tonight. Stay tuned for additional updates. I'm meteorologist Derek Height.