The derecho caused widespread power outages, affecting 100,000 homes in the Chicago area. The high winds, peaking at 82 mph, led to structural damage, including the partial collapse of a garage roof in Northbrook, which damaged several vehicles. While no injuries were reported, the storm's intensity posed a significant risk to residents and infrastructure. The sudden temperature drop from 94°F (34.4°C) to 64°F (17.8°C) also highlighted the rapid and unpredictable nature of such weather events.