
A late season winter storm will produce a combination of heavy snow and disruptive ice starting this evening in the Northern Plains and moving into the Upper Midwest and Great Lakes by tonight continuing through Thursday. Severe thunderstorms will likely produce severe wind gusts, large hail, a few tornadoes, and heavy rainfall across the southern and central Plains today. 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. |







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| Surface Map 1700 UTC May 15, 2013 |