Mozambique: Adverse weather forecast across much of the country through at least March 26

Severe weather is forecast across much of Mozambique through at least March 26. Heavy rainfall in Gaza, Ihambane, and Maputo provinces, and Maputo City in recent days has triggered flooding in the affected areas. Rainfall is expected to ease in these areas on March 25, with light rainfall possible on March 26; however, as of March 25, Mozambique's National Institute of Meteorology (INAM) is maintaining red moderate rainfall warnings (the highest level on a three-tier scale) for these southern regions. INAM has also issued orange warnings for moderate-to-heavy rainfall and thunderstorms across much of Cabo Delgado, Nampula, and Niassa provinces through March 26 due to severe weather forecast across northern regions. Rainfall totals of 3-5 cm (1.2-2 inches) are forecast in the affected areas, with localized higher amounts, and the downpours will be accompanied by thunderstorms and strong winds. The warning also states that localized heavy showers with thunderstorms and gusty winds are also expected to continue over Manica, Sofala, and Zambezia provinces in central Mozambique.

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 located 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 heavy rainfall has saturated the soil.

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 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. Authorities may temporarily suspend port operations or close beach fronts if strong winds trigger hazardous sea conditions. Flooding could block regional rail lines; freight and passenger train delays and cancellations are likely in areas with heavy rainfall and potential track inundation.

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.