Craig Ceecee, Ph.D.さんのイラストまとめ

It is expected that #Fiona will indeed be the once-in-a-lifetime type of storm that you'll be telling your children and grandchildren about in Atlantic Canada.

There is no record of a storm anywhere near this intensity hitting the region.

The #tornado east of Gilmer in NE Texas has debris being launched up to 25,000 feet. That is characteristic of an intense tornado, especially considering the VROT around 70-80 knots (study by @ou_sams). #TXwx

Debris from the #Mayfield tornado has also lofted over 30,000 feet into the air. That's among the most intense ever record. Combined with over 130 knots of VROT, that supports an extremely violent tornado according to a study by @ou_sams. #KYwx