Oman: Adverse weather forecast across much of the country through at least March 1

Severe weather is forecast across much of Oman through at least March 1. A trough of low pressure is expected to bring showers and thunderstorms to northern regions and strong winds across much of the country. Sustained heavy rainfall could trigger flooding in affected areas and strong winds will generate rough seas in coastal areas and possible dust storms in arid parts of the country. The Civil Aviation Authority has warned of isolated rainfall amounts of 0.5-1.5 cm (0.2-0.6 inches) over northern regions Feb. 28 and winds gusting up to 46 kph (29 mph) in Al Dhahirah, Al Wsuta, Ash Sharqiyah South, and Dhofar governorates. Rainfall amounts of 1-4 cm (0.4-1.6 inches) are expected in Ad Dakhiliyah, Al Batinah North, Al Batinah South, Ash Sharqiyah North, Ash Sharqiyah South, and Muscat governorates Feb. 29-March 1, as well as winds gusting up to 65 kph (40 mph) across much of the country.

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 rain 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.

Due to the arid nature of the region and poor stormwater management in some urban areas, even minor rainfall accumulations could quickly result in episodes of flash flooding. Flooding is possible in streams and wadis (dry riverbeds). Significant rainfall may be preceded by moderate winds and dust storms, though some areas - particularly desert areas - may experience high dust levels without rain.

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 cancelations at airports in the affected areas. 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.