At 636 pm cdt, severe thunderstorms were located along a line extending from east alton to near valley park to near st. clair, moving southeast at 40 mph (this line of storms has a history of damaging wind gusts). Hazards include 60 mph wind gusts and penny size hail. Expect damage to roofs, siding, and trees. severe thunderstorms will be near, st. louis, kirkwood, sunset hills, des peres, valley park, fenton, byrnes mill, oakland, murphy and high ridge around 640 pm cdt. granite city, crestwood, madison, affton, south roxana, grantwood village, sappington and concord around 645 pm cdt. edwardsville, arnold, pontoon beach, lakeshire, mehlville, antonia, green park and st. george around 650 pm cdt. collinsville, maryville, oakville, barnhart, imperial and dittmer around 655 pm cdt. other locations in the path of these severe thunderstorms include glen carbon, troy, columbia, caseyville, cedar hill lakes, fountain, o`fallon, valmeyer, waterloo, hillsboro, st. jacob, de soto, lebanon and scott afb. this includes the following highways, interstate 64 in illinois between exits 9 and 41. interstate 44 in missouri between exits 239 and 247, and between exits 257 and 277. interstate 55 in missouri between exits 170 and 191. this also includes scott joplin historic site, route 66 state park, castlewood state park, confluence state park, mastodon historic site, sandy creek covered bridge historic site, gov. dunklin`s grave historic site, robertsville state park, and horseshoe lake state park. hail threat, radar indicated max hail size, 0. 75 in wind threat, radar indicated max wind gust, 60 mph.