It madness to refuse to acknowledge the clear evidence .
The reason Jesus said "a wicked generation keeps seeking a sign but no sign will be given them but the sign of Jonah" isn't because of a lack of evidence. There was plenty of evidence in that day that Jehovah's Word had come true and was coming true and would come true again in the future.
Jesus' point was that those wicked ones were not really seeking a sign. They didn't want God's words to come true. They were so corrupted in their thinking ability that no matter what evidence was in their face, they still refused to believe.
Fire came out of heaven in Elijah's day, and yet some people still clung to Baal. The waters of the Red Sea washed away Pharaoh, the ten plagues shamed the idols of Egypt, but later some ones still worshipped the Queen of the Heavens, the stars, and practiced the mystery cults of Egypt. Jerusalem was destroyed twice because of the wickedness of the religious hypocrites there who falsely claimed to represent the Most High God, and yet religious hypocrites today still refuse to believe Jehovah is yet again going to make an accounting.
The storm is here, and it is sweeping away the false refuge of lies that have been built by both religious hypocritical institutions and non-religious haters and abusers of humankind.
For those who refused to believe that Jesus was God's son back in first century Jerusalem, they got a figurative smack in the face when Jesus was resurrected a few days after they put him to death. They were brought face-to-face with "the sign of Jonah."
Those who wickedly test Jesus today, attempting to stumble people away from faith in God's anointed king, will likewise find themselves face-to-face with "the sign of Jonah" not very long from now.
The storm is here. You would be wise to repent.