ANNEX II-D-2 Alert and Warning criteria Alert Level Description Action Mean wind speed is expected or 1 prevailed between 23 30 mph. – Rainfall of more than 50 mm is WHITE Weather Information, but no immediate expected to occur within 24 hours. threat. High tidal waves are expected. Mean wind speed is expected or 2 prevailed between 30 40 mph. – Torrential rain is expected and if heavy rain occurred for more than YELLOW 2 hours. Concern authorities and people living in A severe thunderstorm is expected the area to be on alert & be ready to take or experienced. action. Travel by sea not advisable. Tropical Cyclone is formed within effective areas of Maldives. Significant tidal or swell waves expected or experienced. -Flash flood is expected. 3 -A tropical Cyclone is tracked to move Evacuation of population from threatened closer or cross Maldives islands. RED areas to safer places. Prohibition of sea -Destructive tidal or swell waves or storm transportation. surge is expected or observed. 4 GREEN The condition has improved. Cancel warning ANNEX II-E-1 Cyclone warning system in Myanmar Cyclone warning system in Myanmar Organization
ANNEX II-D-2 Alert and Warning criteria Alert Level Description Action 1 WHITE Mean wind speed is expected or prevailed between 23 – 30 mph. Rainfall of more than 50 mm 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 prevailed between 30 – 40 mph. Torrential rain is expected and if heavy rain occurred 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 expected or experienced. Concern authorities and people living in the area to be on alert & be ready to take action. Travel by sea 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 transportation. 4 GREEN The condition has improved. Cancel warning ANNEX II-E-1 Cyclone warning system in Myanmar Cyclone warning system in Myanmar Organization
PTC43_DOC7_TCOP_21Edition2015_final.docx