Tornadoes tore through the Midwest on Sunday, killing at least six people and injuring dozens more while causing tremendous devastation in several cities and towns in Illinois and Indiana.
Images posted on Twitter and Facebook showed entire neighborhoods flattened, homes with roofs torn off and cars crushed.
Alexandra Sutter, a reporter for central Illinois' WMBD-TV, called the damage "horrific."
Washington, Ill., 145 miles southwest of Chicago, was hit particularly hard.
"I went over there immediately after the tornado, walking through the neighborhoods," Washington Alderman Tyler Gee said, "and I couldn't even tell what street I was on."
Officials in the devastated communities say it could take days to fully assess the scope of the damage.
Several groups are already pledging to offer aid to the tornado-battered region. Here are two to start: