Cyclone / Hurricane
Tropical storm systems in your region
What is it?
Tropical cyclones (hurricanes/typhoons) are rotating storm systems with destructive winds, torrential rain and — deadliest of all — storm surge that pushes the sea inland.
How we measure it
Active tropical-cyclone events within range from GDACS, with the alert level (Green/Orange/Red) set by GDACS impact modelling.
GDACS alert levels
- NoneNo eventNo active cyclone within range
- GreenMonitorEvent tracked; low expected impact
- OrangePreparePotentially significant humanitarian impact
- RedActSevere impact expected — follow official orders
Within safe range
With no active events, coastal residents should still know their evacuation zone and keep a basic kit through cyclone season.
Beyond the range
A landfalling cyclone combines hurricane-force winds, flooding rain, and storm surge that can raise sea level several metres in hours. Surge and inland flooding — not wind — cause most deaths. Impacts extend hundreds of km from the eye.
Precautions
- Know your evacuation zone and route before the season starts.
- Evacuate when ordered — surge cuts escape routes before landfall.
- Shelter in an interior room away from windows during the eye-wall; the calm eye is temporary.
- Stock water, food, meds and power for 72 hours.
- After passage: avoid floodwater and downed lines; most casualties occur post-storm.