.EXCESSIVE HEAT WARNING NOW IN EFFECT UNTIL 8 PM CDT SATURDAY... * WHAT...Dangerously hot conditions with heat index values up to 115 degrees. Overnight low temperatures near 80 degrees. * WHERE...Far northeast Louisiana, far southeast Arkansas, and northern and western portions of Mississippi. * WHEN...Until 8 PM CDT Saturday. * IMPACTS...Extreme heat and humidity will significantly increase the potential for heat related illnesses, particularly for those working or participating in outdoor activities. * ADDITIONAL DETAILS...Overnight temperatures will only fall to near 80 degrees, which will not provide much relief from the heat for those that do not have access to air conditioning or shelter. 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. Young children and pets should never be left unattended in vehicles under any circumstances. Take extra precautions if you work or spend time outside. When possible reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose fitting clothing when possible. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1.