June 1, 2011 3:22 pm 3 p.m. Severe Weather Alert, Tornado Watch Severe thunderstorm warnings north of the city with an excessive heat warning until 8 p.m. Portions of our viewing area are under a tornado watch until 8 p.m. — that’s from the Philadelphia area, north. US & World Videos 2:50 One more cool day, then warmer weather ahead 3:15 Cold night, then a big warmup this weekend 3:05 Temperatures to heat up over the weekend 2:05 Warming into the 80s by weekend's end 2:09 Big weekend warm-up expected