Significant Severe Weather Event Possible for NNE on July 14 into July 15, 2026

[weatherwiz]

Obviously this isn't going to impact many posters here and the population density isn't as high, however, this potential is deserving of its own thread. The potential exists for a rather significant severe weather event either late Tuesday afternoon or evening/overnight across northern New England. 

Daytime temperatures are expected to climb well into the 80's within the region and probably some spot 90's with dewpoints pushing into the lower 70's. This combination under the presence of an elevated-mixed layer characterized by mid-level lapse rates on order of 7+ C/Km will result in an extremely unstable atmosphere with MLCAPE values pushing or exceeding 3000 J/KG. While the timing of this event may be more evening or overnight, instability values will drop off due to the loss of daytime heating, however, MLCAPE values should remain around 1500+  J/KG. 

With the region on the northern periphery of a stout mid-level ridge that is centered over the northern Plains, strong flow will overspread the region with 60-70+ knots of 500mb flow, aiding in the potential for bulk shear values exceeding 50 knots. In addition, a strong surface cold front will be diving south. 

The combination of instability and wind shear ahead of the approaching cold front will set the stage for the development of one, or perhaps multiple clusters or lines of thunderstorms across Quebec which propagate across northern New England late in the day or during the evening or overnight. Given the ingredients, the potential exists for a concentrated swath of damaging wind gusts (perhaps some significant wind gusts), and if any supercells develop there will be a risk for large-to-very large hail, and even the risk for a few tornadoes (though this is largely dependent on storm mode and whether surface winds can remain more southerly ahead of the front. 

[powderfreak]

I’d take it.