🆕 Forecast Change: Frost Advisory Overnight.

Frost Advisory tonight.

Cover or shelter beloved frost sensitive plants.

Advisory is technically for overnight, 1 AM to 9 AM. Coldest temps will last for a few hours around sunrise.
We do not think it’ll freeze but it’ll be close.
Models came in about three degrees colder overnight. BNA’s low went from 40° to 37°.
Your backyard is usually colder than BNA during fall and winter mornings.

Rain increasingly likely late Wednesday into Thursday.

🤞🏽 Thunderstorms – probably not severe – may accompany this rain. This’ll be a “high shear, low instability” event common here in the fall.

This one’ll probably do what these usually do: we get rain and leaves off the trees, nothing more.

💁🏽‍♂️ Only when we get a surge in instability will it cause severe straight line wind and tornado potential.

It’s a potent system in the broad sensed. When a negatively tilted trough pushes a sharp cold front across dewpoints in Middle Tennessee running in the low to mid 60°s, that’s usually bad times.
Models think we’ll have plenty of wind shear, which is a key severe storm ingredient.
But! Models also think instability – another essential bad storm ingredient – will be insufficient for severe weather.
It’s too soon to rule anything in or out. SPC and NWS-Nashville just don’t see enough bad stuff in the models to start raising concerns in the form of outlooks or discussion. If/When they do, we’ll let you know.
Anxiety level right now: I’m more worried about the Titans tbh, but ask me again after Sunday.

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