Hot Times Live On For The Weekend. Still An Early Week Flood Question

Calla Lillies on the left like the warm, humid air in 
Vermont but the cool weather annuals to the right
are also hanging in there, St. Albans, Vermont. 

 That weak, so-called cold front yesterday actually managed to make things kind of nice, at least in northern Vermont last evening and overnight. 

It was still warm and humid, but manageable. The evening working in the garden was pleasant, and I didn't wilt taking the dogs out early this morning. Call that a win! 

It won't last long.  The air flow has turned to the south again, and the humid air is flooding back in for a weekend stay.  Temperatures will be a bit trick to forecast, but the bottom line is it will be uncomfortable out there. 

The heat advisories stay in effect for the Champlain and lower Connecticut valleys and the lowlands of southwestern Vermont. It'll feel like it's in the upper 90s both Saturday and Sunday afternoons. The rest of the Green Mountain State won't feel quite that hot, but close. 

You'll want to take it easy this weekend. 

I said actual afternoon temperatures both days will be tricky to forecast, especially Sunday.

The air mass this afternoon will be primed to support some good thunderstorms, but there's no trigger to launch them. Which means a few isolated storms will form over the mountains, then quickly collapse for lack of lift and winds in the atmosphere. 

Those collapses will consist of a small patch of brief torrential rain and an outflow of coolish breezes that will spread out from the dying storm. Those few of us who catch such a breeze this afternoon might not make it to the 88 to 93 degree range, which most of us are expecting.

If any of these brief mountain storms get going today, they could happen anywhere in the Green Mountains, but the best chance of them to me seems to be about from Killington south. 

Sunday could have some similarities to Thursday, when clouds held back temperatures a bit in some parts of the area.

Clouds left over from dead thunderstorms to our west and north might or might not come into the picture Sunday.  If they do, then it will be awfully humid with temperatures in the 80s.  If it stays sunny, it will still be awfully humid, but it will be in the low 90s. 

There will be a few potentially torrential thunderstorms around on Sunday as well, but they still look fairly few and far between.  Those who get hit, though, might expect a real gully washer. 

The heavy rain and somewhat bigger flood threat comes on Monday when a cold front slowly sags southward into Vermont and runs up against all that wet air. 

There's disagreement on where the heaviest rain will set up, but it still seems there will be some potential for localized flash flooding. It's something to keep an eye on.