The best source of information for the moment is a theoretical model of where the cloud might be, taking into account the prevailing wind and other weather conditions.

考虑到盛行风与天气条件，目前最好的信息来源是尘用埃云的理论模型测定云层位置。

youdao

He must adapt his speed and manner of skiing or snowboarding to his personal ability and to the prevailing conditions of terrain, snow and weather as well as to the density of traffic.

其滑行速度和方式应当和其个人滑雪水平相符，并且应根据地势、雪质、天气和雪场人口密度来选择以何种方式滑行。

youdao

"It is not just a case of understanding the activity at the volcano itself, what we are also seeing the effect of at the moment are the prevailing weather conditions because we are in a northerly air stream at the moment and that is bringing the volcanic dust from Iceland down over the U.K.

VOA: standard.2010.04.15

Estimates of injury and damage, it is admitted, could be out either way by a factor of ten: much depends on the nature of the material used and on prevailing weather conditions.

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"It is another reminder of the need to apply some common sense when following sat-nav instructions in a rural and mountainous area such as ours, especially with the prevailing weather conditions, " said Aberdyfi Search and Rescue Team member Graham O'Hanlon.

BBC: Couple in car stuck in snow drift near Bala overnight