Shiva Purana
महापर्वतवर्ष्माणं महाजलदनिःस्वनम् ॥ नीलमेघप्रतीकाशं दीप्तशब्दं भयानकम् ॥ २४ ॥
There were huge mountain rains and the roar of huge clouds It was like a blue cloud and made a terrifying sound like a glowing cloud.
english translation
mahAparvatavarSmANaM mahAjaladaniHsvanam ॥ nIlameghapratIkAzaM dIptazabdaM bhayAnakam ॥ 24 ॥
hk transliteration by Sanscript