It was said to Imaam Ja’far (RA) that a person dreamed that rain was falling particularly on his head. He said: “A very sinful person has been this dream. Hasn’t he heard this verse of the Holy Qur’aan? : We sent down rains upon them, thus those who were warned, a calamitous rain had fallen on them”.)
It is said that lightning without rain symbolizes impending disaster for both, a musaafir as well as muqeem.
It is also said that lightning with rain symbolizes cure and remedy for a sick person.