Powerful Storm in the Western U.S.; Heavy Rain and Flooding Threat Across the Central Gulf Coast

A powerful storm system will continue to bring heavy mountain snow, rain, and high winds to the Pacific Northwest and northern California through midweek. Heavy rain and flash flooding potential exists across the central Gulf Coast over the next few days, including the Florida Panhandle. A Slight Risk (level 2 of 4) of excessive rainfall is in effect Tuesday. Read More >

Overview

A widespread rainfall of 1.5 to 3.5 inches occurred over a 24 hour period between Sunday afternoon (24 Jan 2010) and Monday afternoon (25 Jan 2010). A powerful storm moved north through the Great Lakes, and brought very warm air up into Pennsylvania for the 4th weekend in January of 2010. High temperatures on the 24th and 25th were in the mid 40s to near 60 degrees. The rainfall was generally an inch to an inch and a half over the western mountains, to nearly 4 inches in the higher elevations to the east of State College. Places to the southeast of a York to Reading line received less than an inch from the entire storm. The extremely heavy rain caused small creeks and streams to flood very quickly, and even the larger rivers rose over flood stages or very close to flood levels.

Hydrographs
Rainfall Reports

Hydrographs


Yellow Breeches Creek near Camp Hill	Susquehanna River at Harrisburg	Clarion River at Johnsonburg	Loyalsock Creek at Loyalsockville	Aughwick Creek at Shirleysburg

Rainfall Reports


24 Hr Rainfall Reports from 7AM EST 24 Jan 2010 through 7 AM EST 25 Jan 2010	24 Hr Rainfall Reports from 7AM EST 25 Jan 2010 through 7 AM EST 26 Jan 2010