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Something else odd was in the latest vortex was an 8C temp difference inside the center and out. That's 2C higher than Bret had

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Thanks, I missed that.
That could be significant. Shows the system is beginning to act more like a vacuum.

Thought for the Mets. ULL to the east gives Don a northerly upper level wind flow on the eastern side of the storm. AND ULL to the west gives Don a southerly wind flow on the western side of the storm.
Increasing the vorticity?? in the upper levels??

Visible satellite photos are still showing the arcs of cumulus to the NW of DON. Suggestive of no lower level shear.