National Weather Service United States Department of Commerce

Active Spring Like Pattern Across the Eastern Half of the Country

The second storm will track across central and eastern portion of the country this weekend. Heavy wintry precipitation will affect the northern Plains to the upper peninsula of Michigan. Severe thunderstorms are expected along and ahead of the cold front, where very large hail, damaging winds and a few tornadoes are possible from the mid-Mississippi and Ohio Valleys to southern Plains. Read More >

Overview

A severe weather event occurred on May 16, 2009 producing damaging winds across the northern and southeastern sections of Central Pennsylvania. This event was caused by a sharp cold front slicing into moist unstable air. There were two phases of severe weather with this event with the first portion occurring across the north from early to mid afternoon and a second burst of activity during the evening hours. Most of the reports of damage came from this second round of activity.

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