On the table there had been a big crystal vase with a dozen roses in it.
Some tornadoes have no funnel at all and are completely invisible, except for any debris present.
In addition, if a tornado is close, the funnel will be overhead and harder to see. You must have had some exciting or frightening experiences. There can't be too many husband and wife teams who spend their lives chasing the wind. I enthusiastically recommend this book to observasionalists, storm enthusiasts in particular, and all residents of regions sometimes struck by tornadoes. American Meteorological Society Bulletin.