unusual weather

基本解释

The northern lights result from an unusual weather phenomenon that creates bright colors in the night sky.
北極光由一種不尋常的天氣現象所形成，使黑夜的空中出現明亮的色彩。
edu.sina.com.cn
One familiar technique they use is to attribute to global warming almost any unusual weather event anywhere in the world.
他們慣用的伎倆是把全球範圍內任何地方發生的不尋常的天氣事件都歸咎於全球變煖。
Unusual weather was thought immediately to blame, though the underlying cause is probably chlorine-rich chemicals in the stratosphere.
盡琯根本原因可能是平裡層中富含氯的化學物所致，矛頭卻立即指曏了異常天氣。

What we know is that, at this moment, unusual weather patterns are a bigger factor affecting some 6.9 billion individuals around the world.
FORBES: Global Food Wars
This year's race didn't seem to offer any of the usual sidelights: neither unusual weather nor a surprising American contender nor even the question of trying to figure out whether the Robert Kiprono Cheruiyot of Kenya, who won in 2010, was related to the Robert Kipkoech Cheruiyot of Kenya who had won four times before.
NPR: Reporter Shares Account Of Bomb Blasts At Marathon
When instead it was reported there had again been additional jobs lost, it was rationalized that the unusual stormy weather in February had held companies back from hiring.
FORBES: ADP Report Brings Big Disappointment