ATLANTA, March 17 — Portions of Pennsylvania, New York and Mid-Atlantic and Southeast states were still under a National Weather Service watch for damaging wind and tornadoes, as the death toll from weekend storms rose to 36 people across six states.

WASHINGTON, Dec 29 — Severe weather disrupted holiday travel yesterday across the United States with deadly tornadoes in the southeast and heavy snow and wind on the west coast, delaying or canceling thousands of flights across the country.