SYNOPSIS

 

A trough of low pressures is expected to make its way into Pennsylvania today into tomorrow. It will deepen as it approaches Massachusetts and the east coast tomorrow. Windy conditions are expected across Pennsylvania as the trough deepens throughout Tuesday. Most areas of Pennsylvania will experience below normal temperatures as the cold anomalies and low heights remain. Most of western PA will experience a few inches of snow, with areas around mountainous terrain receiving quite a few inches. Most places in eastern PA will see rainy conditions with the possibility of snow being much less likely. Some places in PA may experience a wind chill advisory from windy conditions and low temperatures on Tuesday.

 

SHORT TERM /6 AM TUESDAY MORNING THROUGH 6 PM TUESDAY/

 

Areas in the eastern part of PA will experience windy conditions due to a low making its way towards the coast. Winds will remain in the twenties in most areas of PA. With a westerly flow from the pressure system, not much precipitation is expected in the eastern part of PA and some parts of western PA. Flurries are expected in most places, with a possibility of a snow shower in certain western regions of PA. Most of eastern PA will most likely see non snow precipitation in the form of rain. Temperatures will be cold from the present artic air mass.

 

 

 

LONG TERM /TUESDAY NIGHT THROUGH MONDAY/

 

A ridge of high pressure will be making its way into PA from Wednesday through Thursday. Cold air is expected to make its way in with some places receiving light snow throughout late Wednesday. Cold temperatures are expected across the state with wind chill warnings taking effect in some places. Most places in PA on Wednesday and Thursday will not see temperatures above 30 degrees Fahrenheit.

 

The flow pattern, according to the GFS model, will be splitting and making its way later in the week around Thursday which will dominate the weather patterns. Not much snow is expected from this, but it could produce flurries and snow showers in the southern areas of PA. Most models are zooming in towards the idea that not much snow will be present around Thursday and later in the week for most places.

 

The weekend looks to be relatively warmer than what we are experiencing the middle of this week. Most medium range forecast models are expecting a warm anomaly of higher heights making their way in for the weekend and next week. Temperatures are expected to be in the upper 30s and 40s when the weekend approaches and goes into Monday.  

 

Stephen Quinn