31 Dec 2023 | 03:02 PM UTC
Madgascar: Tropical Storm Alvaro formed in the Mozambique Channel, Dec. 31
Tropical Storm Alvaro tracking eastward toward Madagascar, Dec. 31. Landfall forecast early Jan. 2 near Morombe.
Tropical Storm Alvaro formed in the Mozambique Channel, Dec. 31. It is tracking eastward toward Madagascar. Landfall is forecast as a moderate tropical storm near Morombe early Jan. 2. Meteo Madagascar has issued a yellow alert for the districts of Morondova, Manja, Morombe, and Toliara ahead of the arrival of the storm. It has also warned mariners between Maintirano and Toliara to avoid going out to sea.
Sustained heavy rainfall could trigger flooding in low-lying areas and those with easily overwhelmed drainage systems. Localized evacuations, flash flooding, and landslides are possible. The inclement weather could trigger localized business, transport, and utility disruptions, rendering some bridges or roadways impassable. Flight disruptions at regional airports and temporary closures of ports are also possible. Stagnant pools of water during and after flooding increase insect- and waterborne diseases, such as dengue fever, cholera, and malaria. Raw sewage and other hazardous materials mixed with floodwaters pose a serious health threat.
Activate contingency plans in areas where officials forecast adverse weather conditions. Heed any evacuation orders that may be issued. Use extreme caution in low-lying coastal areas and near streams, creeks, and other waterways due to the potential for severe flooding and storm surges. Stockpile water, batteries, and other essentials in advance. Charge battery-powered devices when electricity is available; restrict the use of cellular phones to emergencies only. Power down mobile devices when not in use. Keep important documents and necessary medications in waterproof containers. Take precautions against insect- and waterborne diseases in the coming weeks.
Plan accordingly for protracted commercial, transport, and logistics disruptions in areas in the path of the storm, especially if vital infrastructure is damaged. Seek updated information on road conditions before driving or routing shipments through areas where flooding has occurred. Confirm flights before checking out of hotels or driving to the airport; clearing passenger backlogs may take several days in some locations.
