We’ve seen some wild swings in temperature in recent weeks across the Lower 48 but the one coming could be one of the greatest in many a year!

The GFS, while backed off some on overnight lows Fri into Sat across the interior Northeast, still shows 20s and 30s with a crop killing freeze threat. As you know, the Northeast has been the center of this month’s warmth nationally and so bloom is in full swing with many tinder plants and crops mature.

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We’ll see the Mid-Atlantic and Northeast go from 80s/90s just days ago to fall-like temps tonight back to mid-July level heat by early and mid next week. We may even see the first widespread 90s with a shot at 100 in DC.

Check it out…

Tomorrow AM

The GFS has eased off on the extremity of chill where it had teens for parts of Pennsylvania but it remains with low 20s. This would be coldest for so late in the season for some and could have devastating impact on wineries if this materialises.

How unusual is this chill? Well frost can occur as far as the 1st and 2nd week of June in parts of western NY.

Then just days later, the models send a 590+ hot dome up the East Coast.

Next Tue/Wed

Believe it or not, the ECMWF is hinting at upper 90s/low 100s over the Mid-Atlantic, even parts of NJ/southern NY State Tuesday PM.

While the GFS is likely too cold, I suspect the ECMWF is too hot. Hopefully! Nonetheless, this is an impressive summer to fall back to summer triple flip…

There will be a threat of thunderstorms on the western periphery of this hot, humid air mass and the GFS sees this widespread threat over the Ohio Valley and eventually the East Coast.

Between 10-20 inches of rain has fallen in just MAY over the Southern Plains.

OKC is on the cusp of breaking a May rainfall record.

See today’s video for the discussion. Next write-up and video will be available Sunday. Have a great weekend.

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