There are many great ways that you can get involved and help during a disaster. There is a great need for help after a disaster happens, but it should be done in a safe and appropriate manner according to what the needs will be. The best way to assist after a disaster for the people who may need help would be to donate money to a reputable organization that specifically helps disaster victims. A list of some of them can be found here. Ask them what their needs are before donating anything. Most of the time, after a disaster the needs are not known right away especially when there are insurance(s) involved. Before helping anywhere, always ask what the needs are before sending donations or being a volunteer somewhere.
Some organizations that you can Volunteer with is
The mission of Citizen Corps is to harness the power of every individual through education, training, and volunteer service to make communities safer, stronger, and better prepared to respond to the threats of terrorism, crime, public health issues, and disasters of all kinds.
Citizen Corps asks you to embrace the personal responsibility to be prepared; to get training in first aid and emergency skills; and to volunteer to support local emergency responders, disaster relief, and community safety.
To find out more about Citizen Corps
Medical Reserve Corps (MRC)
Volunteer Coordination Center
Tooele Public Private Partnership (TP3)
All of the above need some training and information to prepare beforehand.
Contact one of the organizations to learn more about how you can become trained to help before and after a disaster.