Iran, Iraq, Kuwait: Adverse weather forecast across the region through at least Nov. 28

Severe weather is forecast across Kuwait and much of western Iran and eastern and southern Iraq through at least Nov. 28. Thunderstorms, heavy rainfall, and strong winds are forecast across the region over the coming days, with snowfall possible in elevated parts of northwestern Iran and northeastern Iraq. Strong winds may generate dust storms in arid parts of the region. Heavy downpours may trigger flooding in low-lying areas and landslides on unstable slopes. Hazardous travel conditions are likely in mountainous areas due to reduced visibility caused by blowing snow.

Iranian meteorological authorities have issued a warning for a combination of snowfall, rain, strong winds, dust storms, hail, fog, dropping temperatures, and possible flash flooding across much of western Iran Nov. 25-28. Associated hazards with the severe weather include slippery roads, flooding, and reduced visibility.

The Iraqi Meteorological and Seismology Organization has issued a warning for thunderstorms across eastern and southern regions Nov. 26, as well as a noticeable drop in temperatures over the coming days. Flooding is possible in mountainous and valley regions during heavy downpours.

The Kuwait Meteorological Department has issued a red weather warning (the highest level on a two-tier scale) for thunder rain Nov. 25-27. Showers, storms, and winds gusting up to 55 kph (34 mph) are expected over the coming days, with rough seas likely in coastal areas.

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 or a lack of 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 may issue mandatory evacuation orders for flood-prone communities over the coming days. Disruptions to electricity and telecommunications services are possible where significant winds, flooding, and/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 levels of dust without rain.

The severe weather could contribute to transport disruptions throughout the affected area. Floodwaters and debris flows could render some bridges, rail networks, or roadways impassable, impacting overland travel in and around affected areas. Traffic and commercial trucking delays might occur along regional highways. Authorities could temporarily close some low-lying routes that become inundated by floodwaters. Strong winds may also pose a hazard to high-profile vehicles.

Hazardous weather conditions may cause flight delays and cancellations at airports in the region. Flooding could block regional rail lines; freight and passenger train delays and cancellations are possible in areas that see 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.