WASHINGTON, Ill. — As storm surveys continue after Sunday's Midwest tornado outbreak, officials in Illinois now say the number of homes damaged or destroyed has risen to 1,500.
The number could still rise as federal teams compile more information in the field.
Patti Thompson is a spokeswoman for the Illinois Emergency Management Agency. She said Thursday that that figure will almost certainly rise after Sunday's tornadoes.
Officials also said Thursday that 20 confirmed tornadoes touched down around the state. Six people were killed.
Thompson says Federal Emergency Management Agency workers started assessing damage in towns such as Washington on Thursday afternoon.
(WATCH: DANGEROUS! Do Not Try This At Home)
As of Thursday evening, The Weather Channel's tornado expert Dr. Greg Forbes said at least 67 tornadoes were confirmed across nine states Sunday. He also cautioned that number could rise as survey teams from the National Weather Service wrap up their assessments in the damaged areas.
MORE: Aerial Photos of Damage from the Tornado Outbreak
This aerial view on Nov. 18, 2013, shows homes that were destroyed by a tornado that hit the western Illinois town of Washington on Sunday. It was one of the worst-hit areas after intense storms and tornadoes swept through Illinois. (AP Photo/Charles Rex Arbogast)