august

10augAll DayOak Forest (Cook County, IL)

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Start Time:  3:54 pm CDT

End Time:  3:59 pm CDT

Rating:  EF1

Estimated Peak Winds:  100 mph

Path length:  4.9 miles

Width:  250 yards

Fatalities:  0

Injuries:  0

County:  Cook

State:  Illinois

Start Lat/Lon:  41.618 / -87.7868

End Lat/Lon:  41.6182 / -87.6931


A tornado touched down just east of South Harlem Avenue in Oak Forest, then moved nearly due east along 151st Street producing mainly minor tree and structural damage before lifting near the I-57/I-294 interchange in Midlothian. The worst and most concentrated damage then occurred near Midlothian in the region between Cicero Avenue and Pulaski Road. Several large trees and power poles were snapped near their bases in this region, producing damage consistent with an EF-1 tornado. Damage felled consistently in a convergent pattern towards the track centerline. The tornado damage then began to transition to a region of enhanced straight line winds near the I-57/294 interchange where the damage became increasingly oriented in an easterly direction. Downed utility poles and snapped trees indicate wind speeds were likely near 90 mph, with the most notable damage centered in and around the Harvey area bounded on the north by Sibley Boulevard and the south by 159th Street. This high degree of wind damage persisted east into the Shabbona Woods Forest Preserve before easing towards Calumet City.


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