Full Notification

* WHAT...For the Dense Fog Advisory, visibility less than one mile in dense fog. For the Excessive Heat Warning, dangerously hot conditions with heat index values up to 113.

* WHERE...Portions of south central and southwest Illinois. Portions of east central and southeast Missouri.

* WHEN...For the Dense Fog Advisory, until 8 AM CDT this morning. For the Excessive Heat Warning, until 10 PM CDT Friday.

* IMPACTS...Low visibility could make driving conditions hazardous. Heat related illnesses increase significantly during extreme heat and high humidity events.

* AFFECTED AREAS: CLINTON ... MARION ... WASHINGTON ... RANDOLPH ... ST. CLAIR ... MONROE ... JEFFERSON ... WASHINGTON ... ST. FRANCOIS ... STE. GENEVIEVE ... IRON ... MADISON ... REYNOLDS

Instructions:

If driving, slow down, use your headlights, and leave plenty of distance ahead of you. 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.