After a day of high heat and humidity Friday with many towns/cities in the 90s, a nearing cold front was enough to touch of a squall line of severe thunderstorms. The line initially formed during the early afternoon in Ontario and southern Quebec, then gradually sagged southward into NY and VT through the early evening hours. Thunderstorms packed winds of over 50-60 mph, knocking down trees and power lines in numerous communities. Nearly 50 separate instances of wind damage took places across our region.
Some viewers caught amazing pictures as the storms rolled in, like the photo (left) from Milton. Viewer, Isaac Longley, snapped that photo of a shelf cloud. A shelf cloud is often a visible indicator of the leading edge of damaging winds as the cold outflow from a thunderstorm races out ahead of the storm into a warmer, more humid airmass. That clouds forms as the air is forced upward in a fast motion. (read more on a past blog here about shelf clouds).
Saturday may also feature a few strong to locally severe thunderstorms with damaging winds being the main concern once again. Storms will be strongest south and east of the Burlington/Plattsburgh area, but keeping much of central and southern VT and NH in the cross hairs once again. Visit the Storm Prediction Center web site here to learn more on the area's severe threat.
- Meteorologist Kerrin Jeromin