Afghanistan is in an active earthquake zone. You should familiarise yourself with safety procedures in the event of an earthquake. More information about your risks in the event of an earthquake, especially around buildings, can be found at International Rescue Corps. Consider signing up to the US Geological Survey (USGS) 24/7 global monitoring agency. USGS provide a newsfeed or @USGSted twitter feed that distributes alerts for earthquakes with magnitudes over 5.5 or of significant impact.
During heavy rains and winter periods, significant flooding can occur, particularly outside the capital. During winter and spring, heavy snowfall often leads to avalanches in mountainous regions. Afghanistan lacks the infrastructure to respond comprehensively to these events so you should be prepared for every eventuality.
If a natural disaster occurs you should follow the advice of local authorities.