NHC has decreased the development of Invest 99L from 80 to 50% given the sheared environment it’s in and disorganised appearance this morning. The good news is that even if this thing we’re to develop, it’s unlikely to significantly impact the US East Coast.

However, it’s the very eastbound frontal system sliding through the Tennessee/Ohio Valley that will steer 99L away from the US but a major storm system is developing along it and set to wipe out the record heat and bring an autumnal slap in the face.

By later Friday on into the weekend, expect north, northwest gales and snow to high elevations from Upstate New York potentially down as far as the North Carolina Appalachians accompanied by a 25-40 degree temperature drop.

More record highs smashed throughout the East yesterday.

A strong upper jet sweeping in from the NW and driving cool, dry air into a summer-like air mass creates the perfect environment for rapid cyclogenesis.

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This looks to be a classic fall storm.

Expect to see the first 6-12 inches of snow for the higher elevations of the Northeast.

Some will go from 80s to 40s, most from 80s to 50s!

Santa Ana winds drive temperatures to record levels and fan flames

See this morning’s video.

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