the heavens over Chicago have opened

空が割れる時にはheavens openといいます。文脈に特別な意味がなければ、土砂降りを意味します。ポイントはheavensと複数形になっていることです。2:37 the heavens over Chicago have opened and Patricia Lyons Simon Newman has stepped onstage. シカゴの空が割れ、（号砲一発）母は天に召された。

http://www.youtube.com/watch?v=wgfyA5xIGBQ 3:00 the heavens opened and descended upon me. 天が開き降臨した、、、とはつまりチャンスがやってきたです。
http://www.youtube.com/watch?v=Rqx9uRUIQbw 0:08 just as the Opening Ceremoney began, the heavens parted and torrents pored.
https://www.youtube.com/watch?v=exjwf2_e_-E  0:11 I can hear her heartbeat from a thousand miles and the heavens open up every time she smiles. そしてあの娘が笑うと雲に隠れていたお天道様が顔を出す。

1:07 and then just at that moment, a sort of mock our desperation, the heavens opened up and it started to rain.

Stranded in Japan, An Unforgettable Act of Kindness

練習問題解答
a-1256 skies opening up
a-6819 the heavens opened
b-4230 the heavens opened