Mozambique: Adverse weather forecast across southern regions through at least Nov. 14

Severe weather is forecast across parts of southern Mozambique through at least Nov. 14. The National Institute of Meteorology (INAM) has issued orange severe weather warnings (the middle levels on a three-tier scale) for moderate-to-heavy rainfall with thunderstorms across much of Gaza and Maputo provinces, including the city of Maputo, Nov. 12. Rainfall totals of 3-5 cm (1.2-2 inches) over a 24-hour period with localized heavier amounts are expected in the region; these could be accompanied by thunderstorms and strong wind gusts. Further showers and storms are possible in the affected areas Nov. 13-14. Authorities may issue new alerts or update/rescind existing advisories as weather conditions change over the coming hours and days.

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. 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.