Severe thunderstorms produced penny to ping pong ball sized hail, heavy rainfall, and high winds from around Mazon to Diamond and on east into Will and Kankakee counties yesterday evening. The storms passed about 4 miles south of the Goose Lake Weather station and produced only brief moderate rain here although vivid lightning could be seen from those storms. The image shows the storm total precipitation from that narrow band of storms in central Grundy county. Much heavier rains and flooding occurred further south. Some damage reports from Grundy county are included below…the majority supplied by the Grundy County Emergency Management Agency and Grundy County SkyWarn spotters.
0641 PM HAIL MAZON 41.24N 88.42W 05/30/2008 M0.25 INCH GRUNDY IL EMERGENCY MNGR 0642 PM HAIL MAZON 41.24N 88.42W 05/30/2008 M1.00 INCH GRUNDY IL TRAINED SPOTTER 0646 PM HAIL MAZON 41.24N 88.42W 05/30/2008 M0.75 INCH GRUNDY IL EMERGENCY MNGR 0646 PM TSTM WND GST MAZON 41.24N 88.42W 05/30/2008 M50.00 MPH GRUNDY IL EMERGENCY MNGR 0650 PM HAIL CARBON HILL 41.30N 88.30W 05/30/2008 M1.75 INCH GRUNDY IL EMERGENCY MNGR NEAR INTERSECTION OF REED ROAD AND JUGTOWN 0651 PM HAIL BRAIDWOOD 41.27N 88.22W 05/30/2008 M0.88 INCH WILL IL EMERGENCY MNGR 0655 PM TSTM WND DMG S BRAIDWOOD 41.27N 88.22W 05/30/2008 WILL IL LAW ENFORCEMENT TRACTOR TRAILER BLOWN OVER ON I55 NEAR MILE MARKER 232. 0659 PM TSTM WND DMG MAZON 41.24N 88.42W 05/30/2008 GRUNDY IL EMERGENCY MNGR 6 TO 8 INCH TREE LIMBS DOWN ON CENTER STREET. 0701 PM HAIL COAL CITY 41.29N 88.28W 05/30/2008 M0.75 INCH GRUNDY IL EMERGENCY MNGR 0701 PM FLOOD 1 E MAZON 41.24N 88.41W 05/30/2008 GRUNDY IL EMERGENCY MNGR RT. 47 IS COVERED WITH WATER. TYNAN ROAD ALSO WATER COVERED.