Pittsburgh and South-Central PA Weather: Impact Days and Winter Conditions | Northeast Faces Flood Threat Before Pleasant Weekend | New York City and Northeast Weather: Summer-like Temperatures Return, but Smoke Looms | Nor'easter to Bring Rain and Wind to the Northeast | Pittsburgh and South-Central PA Weather: Impact Days and Winter Conditions | Northeast Faces Flood Threat Before Pleasant Weekend | New York City and Northeast Weather: Summer-like Temperatures Return, but Smoke Looms | Nor'easter to Bring Rain and Wind to the Northeast