The Salvation Army is among the agencies helping out.
They're looking for food, especially quick meal items they can prepare and serve on site.
Already some businesses have stepped up to help in that effort.
But it's hard to say how long help will be needed.
Wilma Knapp of the Salvation Army said, "We have no idea, could be weeks, could be months, but we stay here until it's finished."
The Salvation Army has mobile kitchens on site, and while food donations are appreciated, they say monetary gifts help meet the most immediate needs.
Ten dollars feeds a disaster survivor for a day, while they say a $500 donation keeps a Salvation Army canteen fully operational for a day.
In the short-term aftermath of the tornadoes, Salvation Army officers and staff will focus primarily on the immediate needs of disaster survivors and first responders by providing food, hydration and shelter. Mobile kitchens and canteen units are capable of serving over 1,500 meals per day.
The Salvation Army asks people who want to help those affected by the storms to visit GiveSalvationArmy.org or call 1-800-SAL-ARMY. Donors may contribute $10 via their phone by text messaging the word STORM to 80888, and confirming the donation with the word, “Yes.”