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

Another La Niña Winter's Storm arrived in Central Pennsylvania Tuesday, and lasted into Wednesday morning (27th). It brought heavy snow to the far Northern Tier of the State, but a messy mix of Sleet and Snow to areas from I-80 to Route 6, and mostly Rain and Freezing Rain to the rest of the region. While the precipitation started as snow over most of Central Pennsylvania early on Tuesday morning, making a messy morning rush hour commute, the temperatures warmed up very quickly aloft (See SkewT) and turned the precipitation to rain in the south and freezing rain in central areas rather early on Tuesday. The precipitation stayed Snow for all of the 24 to 30 Hours in the northlands.

Animation of radar pictures/mosaic from 6 AM to 1 PM Tuesday (26th)

Maps & Figures

Maps & Figures


IR Satellite Picture with 13z (8 AM EST) Observations	Coop 2-day Snowfall Total from 7:00 am Tues Feb 26th thru 7:00 am Thursday Feb 28th	12z Skew T Diagrams (Upper Air soundings) - note the above freezing air aloft (and at the surface at KLWX)