Areas of Severe Thunderstorms and Heavy Rain Possible through the Weekend

There will be daily chances for scattered thunderstorms across portions of the Central and Eastern U.S. through the weekend, with severe thunderstorms possible in the northern Plains and Upper Midwest. Potential severe storm hazards may include large hail, damaging winds, and a few tornadoes. Storms could also produce heavy rain that may lead to isolated instances of flash flooding. Read More >

Rockford Labor Day Flood

Slow moving thunderstorms produced torrential rainfall over Rockford IL on Labor Day (9/4/06). Nearly stationary storms dumped rain at rates as high as 3 inches/hr that quickly turned residential streets and roads into raging torrents. The greatest rainfall total received to date is 7.5 inches reported near the Cherry Vale mall. Hail covering the ground was also reported in isolated locations during the peak of the storm.

The heaviest rain fell over the southeast side of Rockford within the Keith Creek watershed. Runoff from the heavy rainfall resulted in rapid rises on Keith Creek. When the creek overtopped its banks, flood waters inundated nearby homes and businesses. Many homes were severely damaged when the force of the water caused basements to collapse and allowed flood waters to enter. Cars floated in streets and residents were rescued by boats.

Officials closely monitored Alpine Dam located in Aldeen Park as waters continued to rise. Fortunately water levels did not breach the spillway as more serious flooding would have occurred.

Representatives from the NWS Chicago office toured Rockford on Tuesday to survey the flood damaged areas and document the impacts.

Rockford Storm Total Rainfall Labor Day 2006

Collapsed basement
Basement collapse from the force of the flood waters.

Alpine Dam Spillway
Alpine Dam. Note high water mark below spillway.

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Areas of Severe Thunderstorms and Heavy Rain Possible through the Weekend

Rockford Labor Day Flood - September 4, 2006

Rockford Labor Day Flood