October Discobs 2026

[Interstate]

Why is LWX forecasting in knots over land???

 

A potent shortwave trough will approach from the Great Lakes on
Friday. A strong area of low pressure will form just downstream of
this trough and track northeastward into the St. Lawrence Valley
over the course of the day. Southerly flow ahead of the system will
advect an unseasonably warm and humid airmass northward into the
area, with temperatures forecast to climb into the 80s and dewpoints
reaching into the 60s. The system`s cold front will move through the
area Friday afternoon into Friday evening. The front will move into
an environment with around 500-1000 J/kg of instability, so a line
of thunderstorms may ultimately form along the front. If
thunderstorms were to form, they may be capable of producing
damaging winds, given the strong winds that will be in place just
above the surface (around 40-45 knots at 850 hPa). Regardless of
whether storms form or not, strong northwesterly winds are expected
behind the system`s cold front late Friday through Friday night and
into early Saturday morning. Frequent gusts of 30-40 knots appear
likely across the area in northwesterly flow, and some locations may
even see some gusts above 40 knots. The Alleghenies and Blue Ridge
appear to be the most likely locations to reach Wind Advisory
criteria of 40 knots.