Southeastern Canada and Northeastern United States Will Experience Snowstorm

Affected by the gradual eastward movement of an upper-level cold vortex (Figure 1), it is expected that from January 10 to 12, southeastern Canada and northeastern United States will experience moderate to heavy snow, with localized blizzard or severe blizzard conditions. The cumulative snowfall is anticipated to be between 5 and 15 mm, with some areas potentially exceeding 20 mm (Figure 2). Most of these regions will also experience a temperature drop of 8 to 12°C, with localized decreases exceeding 14°C (Figure 3), accompanied by strong winds of 5 to 7 on the Beaufort scale, with gusts reaching 8 to 9. Attention should be given to the adverse impacts of the severe wind and snow conditions on local power facilities, transportation, and other industries.

Figure 1  Forecast of 500 hPa Geopotential Height (units: dagpm) and 850 hPa Wind Field at 08:00 (BJT) on January 11, 2026

Figure 2  Accumulated Precipitation from 08:00 on January 10 to 08:00 on January 13, 2026 (BJT) (Unit: mm)

Figure 3  48-hour Temperature Change at 2 meters above ground level as of 08:00 (BJT) on January 12 (Unit: °C)

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Author: Xie Jin                                 Reviewer: Min Ying 

English reviewer:Wang Yi                                                                       Issue approver:Dai Kan