What is a Tropical Disturbance?
A tropical disturbance is an organized low-pressure system that forms over warm ocean waters and generates clouds, rain, and gusty winds. These systems can vary in strength and are part of a natural progression that can intensify through stages:
In the Maldives, tropical disturbances are locally known as “Kolhigandu” (low pressure) or “Baarugadha Kolhigandu” (deep depression). These systems often develop in the Arabian Sea or the Bay of Bengal, and can influence local weather conditions even if they remain far from the islands.
How Tropical Disturbances Affect the Maldives
Direct cyclone impacts on the Maldives are rare, but tropical disturbances frequently influence the country’s weather, particularly during the monsoon seasons. When a low-pressure system forms nearby, it can lead to:
Strong winds and heavy rainfall, causing flooding in low-lying areas.
Rough seas and high swells, disrupting sea travel and fishing activities.
Thunderstorms and lightning, which may damage power lines and trees.
Because the Maldives lies close to the equator, most disturbances that form nearby do not develop into full tropical cyclones due to the weak Coriolis effect. However, the effects of these systems such as rainbands, gusty winds, and storm surges—can still cause widespread disruption across the islands.
Tropical Disturbance Alerts and Warnings
The Maldives Meteorological Service (MMS) continuously monitors regional low-pressure systems and issues alerts when disturbances pose potential impacts.
Before a Tropical Disturbance: Get Ready
Preparation before a tropical disturbance is essential to reduce damage and ensure safety.
Follow weather updates from MET and NDMA.
Secure roofs, boats, and outdoor furniture before strong winds arrive.
Ensure emergency items such as flashlights, batteries, and first aid kits are accessible.
Avoid unnecessary sea travel when warnings are in effect.
Households and island councils should also check drainage systems to prevent flooding caused by heavy rains.
During a Tropical Disturbance: Stay Safe
When strong winds and heavy rainfall begin:
Stay indoors and keep away from flood-prone or coastal areas.
Do not attempt to travel by sea unless absolutely necessary.
Disconnect electrical appliances if flooding occurs inside homes.
Follow official advice and local alerts from authorities.
Fishermen and boat operators should remain in port until MMS confirms safe sea conditions.
After a Tropical Disturbance: Stay Alert
Even after the weather improves, hazards may persist.
Check for local advisories on flooding, damaged infrastructure, and ongoing weather systems.
Inspect your home for leaks, roof damage, and water intrusion.
Reconnect electricity safely after ensuring dry conditions.
Report any hazards such as fallen trees or power lines to local authorities.
Community-level preparedness and early action can greatly reduce the risks posed by tropical disturbances.
Stay Prepared, Stay Safe
Tropical disturbances are common across the Maldives and represent the earliest signs of changing weather conditions during the monsoon. While not as destructive as cyclones, they can still cause significant disruption through rain, strong winds, and rough seas.
Staying informed, preparing early, and following official advisories can help individuals, communities, and visitors remain safe during periods of unstable weather.