[Eagle Eye]

That's right, mushroom clouds mean nothing. We used to get really nice one when EODT would blow munitions every afternoon. When the sun was setting sometimes the cloud would have nice red and rose hues to it!

[COEXERJ145]

The story goes that when the Japanese battleship Yamato was destroyed during its suicide run to Okinawa, the mushroom cloud that rose from the exploding ship was so large it could clearly be seen from the southern Japanese islands.

Four months later, the people in Southern Japan saw even larger mushroom clouds.