THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS PARTS OF
THE NORTHEAST...
...SUMMARY...
Scattered strong to severe thunderstorms will pose a risk of
damaging wind gusts across parts of New England and the northern Mid
Atlantic on Friday. Isolated severe storms are also possible across
parts of the northern and central Plains.
...Northeast into the Northern Mid-Atlantic...
A robust midlevel trough will advance eastward across Quebec and
parts of New England through the day, while a related belt of 30-40
kt midlevel westerly flow overspreads the Northeast and northern
Mid-Atlantic. At the same time, a cold front will move southward
across the region through the afternoon. As widely scattered
thunderstorms along the front intercept a moist/destabilizing
pre-convective air mass (upwards of 2500 J/kg MLCAPE), around 30 kt
of effective shear will promote organized clusters, small line
segments, and possibly some supercell structures. The enhanced
low/midlevel flow, steepening boundary-layer lapse rates, and
expected clustering will support scattered wind damage across the
region. A Slight risk was added where confidence is highest in the
overlap of scattered organized storms, highest buoyancy, and
sufficient deep-layer flow/shear.