Tuesday's derecho caused widespread damage and power outages across the Chicago area and northwest Indiana. Indiana State Police are urging drivers to fill up before traveling into northwest Indiana as widespread power outages following Tuesday's severe weather lead to long lines and concerns about possible fuel shortages. Power outages have affected many gas stations in northwest Indiana, and the stations that remain open are seeing heavy demand. Significant storm damage was reported in Cook and Will counties, including Homewood and Tinley Park, as well as several communities in northwest Indiana. This is particularly the case in northwest Indiana.