The weather agency say: "These lens-shaped orographic wave clouds form when ... "If there is enough moisture in the air, the rising motion of the wave will cause water vapour to condense, forming ...

This storm favored the upslope areas in the plains. the mountains provided orographic lift, ringing out the moisture as the air was forced upwards from the adjacent plains that saw very little ...

“As a result, the propensity to rain is diminished greatly.” The process, known as orographic uplift, takes place when moisture-laden clouds collide with an elevated landmass. As they rise in altitude ...