National Weather Service United States Department of Commerce

Severe Weather and Flash Flooding Potential for the Center of the Nation

An upper level trough coinciding with surface frontal boundaries will focus showers and thunderstorms from the Great Lakes region into the Ohio and Tennessee Valley's, central and southern Plains. Instances of flash flooding, damaging winds and large hail are possible. Meanwhile, increasing waves and rip currents for portions of the eastern seaboard this week as tropical Atlantic is active. Read More >

Dramatic Temperature Rise May 15, 2013
A dramatic temperature rise occurred over Central Pennsylvania during the late morning and afternoon hours of May 15, 2013. The temperature graphs below record large temperature changes as a warm front moved across the area. For example, in 4 hours, State College rose from 55 to 81. That's almost 7 degrees per hour.

 

Altoona temp trace

Du Bois temp trace

Clearfield temp trace

Johnstown temp trace

Harrisburg Temp Trace

State College temp trace

max temperature 5/15

COOP Max Temperature for May 15, 2013

Surface Map 1700 UTC

Surface Map 1700 UTC May 15, 2013