Maldives Meteorological Service

Criteria for issuing Weather Alerts

Alert Level Description Action
1 White
  • Mean wind speed is expected or prevail between 23-30 mph
  • Rainfall of more than 50mm is expected to occur within 24 hours
  • High tidal waves are expected
Weather information, but no immediate threat
2 Yellow
  • Mean wind speed is expected or prevail between 30-40 mph
  • Torrential rain is expected and if heavy rain occurs for more than 2 hours
  • A severe thunderstorm is expected or experienced
  • Tropical cyclone is formed within effective areas of Maldives
  • Significant tidal or swell waves are expected or experienced
Concern authorities and people living in the area to be on alert and ready to take action. Travel by sea is not advisable
3 Red
  • Flash flood is expected
  • A tropical cyclone is tracked to move closer or cross Maldives islands
  • Destructive tidal or swell waves or storm surge is expected or observed
Evacuation of population from threatened areas to safer places. Prohibition of sea transport
3 Green
  • The condition has improved
Cancel Warning

Criteria for issuing Alerts and Warinings for the Earthquake and Tsunami

Alert Level Description Action
1 White
  • An earthquake of 7.0 or higher in Richter scale, occurred in the Indian Ocean ring but there is no immediate threat from the event
Earthquake information
2 Yellow
  • An earthquake of 8.0 or higher in Richter scale, occurred in the Indian Ocean ring and has the potential to generate an ocean wide destructive tsunami in the Indian Ocean
Earthquake and Tsunami advisory, concerning authorities and public are advised to be on alert and be ready to move safer areas and high buildings
3 Red
  • An earthquake of 8.0 or higher in Richter scale, occurred in the Indian Ocean ring and confirmation of an ocean wide destructive tsunami originated from the epicenter
Tsunami warning. People evacuated from the danger zones
3 Green
  • The condition has improved
Cancellation message, MMS assume that the tsunami threat does not exist to Maldives