MARTIGNEY CREEK NEAR ARNOLD

USGS 07010208

EXTREME HEAT WARNING
* WHAT...Dangerously hot conditions with heat index values of 105 to 110 degrees. * WHERE...Portions of south central and southwest Illinois and central, east central, and southeast Missouri. * WHEN...Until 9 PM CDT this evening. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events.

Today, A 20 percent chance of showers and thunderstorms after 4am. Mostly cloudy, with a low around 76. Light southwest wind.

Tomorrow, A 20 percent chance of showers and thunderstorms after 4am. Mostly cloudy, with a low around 76. Light southwest wind.