Mongolian Plateau Will Experience Heavy Snowfall and Strong Cooling

      From October 15 to 17, influenced by the transition of an upper-level transverse trough to a vertical orientation and a low-level vortex (Figure 1), a significant cooling and precipitation event is expected to sweep across the Mongolian Plateau from west to east. In central and eastern Mongolia, some areas will experience moderate to heavy snowfall, with localized blizzard conditions. The cumulative snowfall during this period is anticipated to reach 5 to 10 mm, with isolated areas exceeding 15 mm (Figure 2). Temperatures in these regions are expected to drop by 6 to 12 ℃, with localized areas exceeding 14 ℃ (Figure 3). Additionally, strong winds of 5 to 6 on the Beaufort scale, with gusts reaching 7 to 8, will accompany these conditions. Precautions are advised to mitigate the adverse impacts of the strong winds, cooling, and snowfall on local power transmission and transportation.

Figure 1  Forecast of 500 hPa Geopotential Height (unit: dagpm) and 700 hPa Wind (unit: m/s) at 08:00 (BJT) on October 16

Figure 2  Accumulated Rainfall and Snowfall from 08:00 on October 15 to 08:00 on October 17 (BJT) (Unit: mm)

Figure 3   48-hour Temperature Change Forecast at 2 meters above ground level as of 20:00 (BJT) on October 17 (Unit: °C)

Author: Xie Jin                                 Reviewer: Niu Ruoyun 

English reviewer:Wang Yi                                                                       Issue approver:Dai Kan