Yesterday evening when it was reported in Alabama, I assumed it had gone about 2000 miles from Billings in the morning, and that would have been about 150 mph. The track on the map does look like a jetstream dip. Can't quite see yesterday's jetstream path on the map, the low point of the storm on the right is lower than it is today. https://www.wunderground.com/maps/wind/jet-stream. That is about 10 km high. This isn't very precise calculation, but it looks like it could have been carried on the jetstream at least part of the way.
Yesterday evening when it was reported in Alabama, I assumed it had gone about 2000 miles from Billings in the morning, and that would have been about 150 mph. The track on the map does look like a jetstream dip. Can't quite see yesterday's jetstream path on the map, the low point of the storm on the right is lower than it is today. https://www.wunderground.com/maps/wind/jet-stream. That is about 10 km high. This isn't very precise calculation, but it looks like it could have been carried on the jetstream at least part of the way.
Thanks.