09/02/2026
** INCREASED SEVERE WEATHER RISK, TODAY, SEPTEMBER 2ND **
Today is shaping up to be an active day of severe weather across Pennsylvania, and while some areas are under Tornado and Severe Thunderstorm Warnings this morning, there will be additional rounds this afternoon and evening as the atmosphere destabilizes with increasing wind shear. Northwestern Pennsylvania got hammered this morning with damaging winds and large hail, and a second round is expected this afternoon and evening with potential supercells and multi-cell storm clusters.
ZONE 3: Numerous (50-70%) chance for severe thunderstorms this morning, afternoon, and evening. Much of this area has already seen a damaging wind cluster this morning, but the atmosphere will quickly recover for the PM. I am watching the potential for damaging wind segments of 60+ mph to develop. Discrete supercells in this environment may be able to produce a tornado and large hail greater than 1.50" in diameter, while squall-line bow segments will be more of a wind threat with potential spin-up brief tornadoes. The afternoon risk will be greatest between 4 - 10 PM.
ZONE 2: Scattered (30-50% chance) for strong to severe thunderstorms this morning, afternoon, and evening. I am watching the potential for damaging wind segments of 60+ mph to develop. Discrete supercells in this environment may be able to produce a tornado and large hail greater than 1.50" in diameter, while squall-line bow segments will be more of a wind threat with potential spin-up brief tornadoes. The afternoon risk will be greatest between 4 - 10 PM.
ZONE 1: Isolated (10-30% chance) for strong thunderstorms this morning, afternoon, and evening. The greatest risk will be locally strong wind gusts of 45 - 55 mph and perhaps some hail. A brief tornado or two cannot be ruled out if a supercell moves into this region. Stable air will help to lower the potential here, but if any damaging wind segments that move in from Zone 2 can survive, these will also need to be watched for a locally higher risk.
-> Keep in mind, severe weather does not impact every house or neighborhood. Unless it is a large outbreak, severe weather impacts will differ even across small areas. It is always good to be prepared by having multiple ways of receiving severe weather alerts and a shelter to take cover in when severe weather strikes.