Bulgaria: Adverse weather forecast across southern regions, Dec. 16

Severe weather is forecast across southern Bulgaria, Dec. 16. Orange snow and ice, wind and rain warnings are in place in several areas, including Burgas and Yambol. Authorities will likely issue new alerts or update/rescind existing advisories as weather conditions change over the coming days.

Rounds of heavy precipitation (including rain and snow) and strong winds are likely. Where precipitation falls as rain, flash, and areal flooding is possible. Such flooding is possible in low-lying communities near watercourses and other large bodies of water, as well as in urban areas with easily overwhelmed stormwater drainage systems. Sites located downstream of large reservoirs may be subject to flash flooding after relatively short periods of intense rainfall.

Precipitation could fall as snow. Wind gusts could cause blowing and drifting snow; decreased visibility is likely in affected areas. Rain-induced landslides cannot be discounted in areas of elevated terrain; there is also the possibility of avalanches in mountainous areas where the snowpack has become unstable due to heavy snowfall. Power outages could occur throughout the affected area.

Floodwaters and related debris may render some bridges, rail networks, or roadways impassable, impacting overland travel in and around the affected area. Flooding in urban areas could also result in significant traffic congestion. Heavy snow will likely make driving hazardous in some areas; authorities could implement temporary road closures or detours in such locations. Mountain passes and tunnels could be closed as a precautionary measure during periods of intense snowfall.

The disruptive weather could cause some delays and cancellations at airports across the affected area. Authorities may temporarily suspend port operations along the coast if strong winds trigger hazardous sea conditions, impacting freight and passenger maritime traffic. Flooding or snow could block regional rail lines; freight and passenger train delays and cancellations are possible in areas that see heavy rainfall and potential track blockages.