Mauritius: Adverse weather forecast across Mauritius Island through at least early Nov. 23

Heavy rainfall is forecast across Mauritius' main island through at least early Nov. 23. The Mauritius Meteorological Service has issued a torrential rain warning across the island through 04:00 Nov. 23. A line of convergence associated with Tropical Depression Bheki, which passed south of the island early Nov. 21, is expected to bring moderate-to-heavy showers mainly in eastern, northern, and southern parts of the island. Some areas have already received rainfall totals of over 10 cm (4 inches) late Nov. 21-early Nov. 22. Isolated thunderstorms and associated strong wind gusts and lightning are also possible during downpours. Officials could update and possibly extend the coverage of weather alerts over the coming days.

Nurseries, schools, and other educational institutions have been closed and exams postponed across Mauritius Island Nov. 22 due to the heavy rainfall. Motorists have been advised to proceed with caution and parking has been prohibited along Rue la Chausse and Rue Poudriere, near Ruisseau du Pouce, and underground carparks in Port Louis.

Sustained heavy rainfall could trigger flooding in low-lying communities near rivers, streams, and creeks. Urban flooding is also possible in developed areas with easily overwhelmed stormwater drainage systems. Sites downstream from large reservoirs or rivers may be subject to flash flooding after relatively short periods of intense rainfall. Landslides are possible in hilly or mountainous areas, especially where the soil has become saturated by heavy rainfall.

Authorities could issue mandatory evacuation orders for flood-prone communities over the coming days. Disruptions to electricity and telecommunications services are possible where significant flooding or landslides impact utility networks.

Floodwaters and debris flows may render some bridges, rail networks, or roadways impassable, impacting overland travel in and around affected areas. Ponding on road surfaces could cause hazardous driving conditions on regional highways. Authorities could temporarily close some low-lying routes that become inundated by floodwaters.

Severe weather could also trigger flight delays and cancellations at regional airports, including Sir Seewoosagur Ramgoolam International Airport (MRU). Authorities may temporarily suspend port operations or close beach fronts if strong winds trigger hazardous sea conditions.

Localized business disruptions may occur in low-lying areas; some businesses might not operate at full capacity because of flood damage to facilities, possible evacuations, and some employees' inability to reach work sites.