Mongolia: Adverse weather forecast across northeastern regions through at least July 25

Severe weather conditions are forecast across northeastern Mongolia through at least July 25. The Mongolian National Agency for Meteorology and Environment Monitoring (NAMEM) has issued orange (the middle level on a three-tier scale) heavy rainfall and thunderstorm warnings across Dornod and Khentii provinces. Yellow heavy rainfall and thunderstorm warnings are in place across the rest of the affected area. Officials could update and extend the coverage of weather alerts over the coming 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 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. Where severe weather impacts utility networks, disruptions to electricity and telecommunications services are possible.

The severe weather could contribute to transport disruptions throughout affected regions. 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 may trigger flight delays and cancellations at airports across the affected region. Flooding could block regional rail lines; freight and passenger train delays and cancellations are possible in areas with heavy rainfall and potential track inundation.

Localized business disruptions may occur in flood-hit areas; some businesses might not operate at full capacity because of damaged facilities, possible evacuations, and employees' inability to reach work sites.