The Australian Psychological Society has information on identifying and dealing with psychological trauma (view here).

"Many people have strong emotional or physical reactions following experience of a traumatic event. For most, these reactions subside over a few days or weeks. For some, the symptoms may last longer and be more severe. This may be due to several factors such as the nature of the traumatic event, the level of available support, previous and current life stress, personality, and coping resources."

It is important that you are watchful of your own psychological health, and that of friends and family, if you or they have been affected by the bushfire. 

If you are having trouble coping with the impact of the recent bushfire, you can contact SupportLink on 0414 626706.