There are 5 phases of a disaster: 1) Pre-disaster preparation involves hazard surveys, risk assessment, and developing disaster plans. 2) Warning occurs from the first danger signal to impact and involves prediction and activating emergency plans. 3) Impact is when the disaster strikes and the effects are endured. 4) Emergency starts at the end of impact and focuses on recovery until additional threats have passed. 5) Recovery begins in the emergency phase and ends when normal community order and function resume.

1. Phases of a disaster
Pre disaster preparation
Warning
Impact
Emergency
Recovery

2. Phases of a disaster
1. Pre disaster preparation
Geological hazard surveys,
risk assessment survey.
Adopt laws & codes to
prevent and mitigate disaster.
Effective disaster plan is
developed, distributed ,
tested in mock disaster
exercises , revised & kept
up to date.

3. Phases of a disaster ( contd….)
2. Warning
 This is the period of time from the first
possible danger signal to the moment of impact.
 Disaster prediction using satellites & networks.
 Activation of disaster plan & establishment of
emergency operation.
3. Impact
 Phase at which disaster actually strikes and
essentially
a period of enduring the disaster’s effects and
“holding on”.

4. Phases of a disaster ( contd….)
4. Emergency
Starts at the end of impact & continues until the
immediate threat of additional destruction has
passed & the community is organized for recovery
and rehabilitation
5. Recovery
Begins during the emergency phase and ends
gradually with the resumption of normal community
order and function.