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Severe storms possible in northern New England on Wednesday – NBC Boston

A tornado warning was issued for Grafton County in northern New Hampshire on Wednesday, but it has since been canceled.

As the remnants of Beryl cross the Great Lakes and enter Canada tonight, severe storms are brewing in the northeast.

A list of current severe weather warnings and observations can be found here.

As that approaches the surface boundary and there is a jet stream aloft, we have rotating upper-level winds or directional wind shear, as well as speed shear with stronger upper-level winds than at the surface. This energy means that any storm that develops on Wednesday has the potential to rotate.

Rotating storms don't always produce tornadoes, but the risk is pretty high in our area of ​​northern and western New England on Wednesday. Add to that the high heat and humidity, which gives the storms plenty of fuel.

In addition to tornadoes, wind, and hail, we will also most likely experience flooding and frequent lightning due to the tropical environment. Our exclusive internal forecast model predicts rotating storms will move across northern New England tonight. We must be on guard for tornadoes to form.

Southern New England is unlikely to experience any problems today. However, northern New England will see storms and heavy rain through tonight as the storms follow a warm front line.

Tornado warnings are in effect for northern Vermont until 9 p.m., and for parts of New Hampshire and Maine until midnight.

Stay tuned to our First Alert Weather team for today's updated warnings, especially on NECN.

Anna Harden

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