The last full run of the GFS (12Z) had a 500MB trough and mid-lat low approaching the great lakes...and a small low located over Ohio.
The most recent run at the same verify time is faster with the small low...over West Virgina...and a little sharper and faster with the Canadian mid-lat system.
Still no vortex in the new guidance...but my gut feeling is that earl will probably end up south of my forecast track for tonight unless we start to see subsequent runs of the model deepen the trough to the north. But...have to see which way these features trend. Next 2 days are critical...I hope the track stays south.
MW





