IL

Storm restoration across Clark County

Clark County sits in southeastern Illinois along the Indiana border and falls under the NWS Lincoln forecast area, placing it in a corridor prone to spring and summer severe weather. The county has recorded 13 tornadoes since 1950 - mostly brief F0/EF0 touchdowns near Casey and Westfield - with the strongest being an EF2 near the Oilfield community in April 2025; zero fatalities or injuries have resulted from any recorded event. Hail is a recurring warm-season threat, though no event reaching 2 inches or larger has been confirmed in the county since 1955; smaller hail (pea to quarter-size) was reported near Casey and Martinsville as recently as February 2026. Flash flooding is the county's most economically consequential hazard: the Embarras River watershed drains through the western portion of the county and the Wabash River defines its eastern border, and the June 2008 multi-county flood event triggered a gubernatorial disaster declaration specifically naming Clark County after levee failures sent more than 10,000 acres underwater. Winter storms bringing ice accumulation and heavy snow are a recurring threat across east-central Illinois, capable of downing power lines and making rural roads impassable for extended periods.