Synopsis...
Snow on the way for Thursday. Frigid temperatures to follow. Both events will be fairly significant as we close out the week.
Short Term...
The 18Z GFS model has the next round of snow showers breaking in to the commonwealth by Thursday early evening. This system has a fairly healthy looking flow of moisture coming into it, and a strengthening high pressure area behind it will help to pad final snow totals. A light to moderate snow should occur over much of the commonwealth through Friday afternoon. Friday looks to be a breezy day as the trailing high pressure system situates itself in the northeast. The biggest story Friday night will be the cold... 850mb heights will drop to almost -20 degrees, based on a mix of WRF and GFS data. This means low temperatures, especially in higher elevations, could approach zero degrees.
Long Term...
Saturday and Sunday will be dominated by cloudy skies with a chance of an isolated snow shower... Weak disturbances from the central US and southern Canada will contribute to this extensive cloud cover. The moisture backing in either of these systems, however, seems to be lacking initially. The long term GFS keeps the state out of the woods for more snow, and in fact shows possible warming as a steady SW flow and high pressure builds in. The next system appears to be in the works for mid to late next week.
Andrew Dzambo
We Are... Penn State Meteorology
Snow on the way for Thursday. Frigid temperatures to follow. Both events will be fairly significant as we close out the week.
Short Term...
The 18Z GFS model has the next round of snow showers breaking in to the commonwealth by Thursday early evening. This system has a fairly healthy looking flow of moisture coming into it, and a strengthening high pressure area behind it will help to pad final snow totals. A light to moderate snow should occur over much of the commonwealth through Friday afternoon. Friday looks to be a breezy day as the trailing high pressure system situates itself in the northeast. The biggest story Friday night will be the cold... 850mb heights will drop to almost -20 degrees, based on a mix of WRF and GFS data. This means low temperatures, especially in higher elevations, could approach zero degrees.
Long Term...
Saturday and Sunday will be dominated by cloudy skies with a chance of an isolated snow shower... Weak disturbances from the central US and southern Canada will contribute to this extensive cloud cover. The moisture backing in either of these systems, however, seems to be lacking initially. The long term GFS keeps the state out of the woods for more snow, and in fact shows possible warming as a steady SW flow and high pressure builds in. The next system appears to be in the works for mid to late next week.
Andrew Dzambo
We Are... Penn State Meteorology
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