The weather forecast reported an easterly drift of wind.

天气预报报告风向偏东。

youdao

It's found that this blizzard was under the situation of 'High in the south, low in the north', and the easterly gale caused by the weather situation was the precondition to the blizzard occur.

分析认为本次过程发生在“南高北低”的天气形势下，“南高北低”引发的偏东大风是雪暴发生的先决条件。

youdao

The most unpleasant weather occurs in winter, when easterly winds from Russia may bring very low temperatures for several days on end.

BBC: Czech Republic

Weather conditions were said to be mild, with light south to south-easterly winds and good visibility with generally clear skies.

BBC: Crash report urges safety checks