According to the National Weather Service (NWS), a potent weather system is set to impact the region today, bringing strong storms and gusty winds.
A deepening area of low pressure and an associated cold front will move across the region Wednesday, ushering in a line of showers and thunderstorms. Some storms may become severe, followed by a prolonged period of strong winds from Wednesday night into Thursday afternoon.
Severe Weather Timing and Potential Hazards
The NWS has adjusted its forecast to account for two rounds of potential severe weather on Wednesday. The first wave of storms is expected to arrive late Wednesday morning, primarily impacting areas along and west of the Blue Ridge between 11 a.m. and 1 p.m. The storms will then advance eastward toward metropolitan areas between noon and 4 p.m.
Meteorologists warn that damaging wind gusts will be the primary threat with this initial line of storms, with the possibility of isolated tornadoes embedded within the squall line. The second round of storms may develop later in the afternoon as a mid-level dry slot allows for renewed surface heating and instability. If additional storms do form, they could be supercellular in nature, posing risks of damaging winds, large hail, and a few tornadoes. The highest potential for these storms will be west of the Blue Ridge and along the Interstate 81 corridor.
Wind and Post-Storm Conditions
Gusty northwest winds will become the primary concern as the cold front clears the region late Wednesday night. Winds will strengthen throughout the area, with gusts reaching 30-50 mph, particularly on Thursday morning and afternoon. A Wind Advisory has already been issued for the higher elevations of the Alleghenies and the Blue Ridge, where gusts could reach 50 mph. Additional advisories may be required for other parts of the region.
Wintry Conditions in Higher Elevations
On the back side of the system, precipitation will linger over the mountains, transitioning to snow early Thursday. The western slopes of the Allegheny Front may see snow accumulations of 1-4 inches, which could cause hazardous travel conditions along the I-68 and US-219 corridors. Strong post-frontal winds will contribute to reduced visibility and blowing snow in these areas.
Looking Ahead
High pressure is expected to briefly build into the region on Friday, providing a break from weather before another low-pressure system and cold front move through on Saturday. As broad high pressure returns, more settled conditions are forecast for Sunday and into early next week.
Precautionary Measures
Residents are urged to stay informed and take precautions before the incoming weather system. Secure outdoor objects that strong winds could blow away, prepare for possible power outages, and remain weather-aware, especially if traveling in affected areas.