Friday, November 21, 2008

Snowfall Recap: November 20th and 21st, 2008

Philadelphia's first measurable snowfall occurred with a big whopping inch, which fell this morning during the enhanced band of snow that set up and traveled east through Chester County, Delaware County, and Philadelphia.

Snowfall totals were as high as 4.5" in parts of Chester County and snowfall was isolated, with not everyone seeing accumulating snows in the region but most of us getting at least a coating. You can watch the snowfall move through in two waves, both of which were connected to a trough of low pressure that slipped south as Thursday progressed into Thursday night and progressed Friday. Some of the moisture was enhanced initially by lake effect but as time progressed the nature of the snowfall changed from lake enhanced to dynamically enhanced by the boundary.

Regardless of how it developed, the season's first official snowfall in Philadelphia a nice hit for the end of the week and for some, an unexpected surprise.