National Weather Service United States Department of Commerce

Overview

The remnants of once-Hurricane Hanna (which was a Tropical Storm for most of its life) moved up the Eastern Seaboard late Friday into Saturday (Sept 5-6), and produced rainfall over Southeastern Pennsylvania on Saturday, September 6th. While the rain reached almost 5 inches in spots, very little flooding occurred, and no river points in the NWS Central Pennsylvania Office's Hydrologic Service Area went even close to flood stage. The rainfall was mainly a constant, light to moderate rain over places along and to the Southeast of I- 83. The rain tapered off very quickly from east to west, with little or no rain occurring to the north or west of State College. (See Map of rainfall estimates below) The lack of flooding due to these seemingly high rain totals was mostly due to the fact that it had been very dry for the past few weeks, allowing the ground to soak up much of the rain, and keep run-off into the streams and waterways to a minimum.

Multi-Sensor Precipitation Estimate of Rainfall from Hanna 

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