Winter in Pittsburgh is always interesting.
Pittsburgh, situated in the Pittsburgh Plateaus Province of the Appalachian Mountains, has lots of rolling hills. Some of the topography can make for fairly steep and extended drop offs. So at the top of Lydia Street in Greenfield down to Greenfield Avenue that 200 foot downgrade can be pretty extreme in places.
At the top of another high point in the area, around Beacon and Wightman in Squirrel Hill, a small wave of atmospheric energy passed over the area around 8:30 AM bringing a quick burst of precipitation. It was snowing those little “pellets” of snow, like miniature snowballs. And it was coming down really quickly for a few minutes. As the bus I was riding descended down Forbes Ave to S. Bellefield Ave the precipitation had time to pass through more of the warmer atmosphere.
During the trip down Forbes Ave the snow pellets had changed to a wet snow about half way down the hill, and at the bottom the precipitation event had changed entirely to a wet drizzle. As the moisture was falling through the atmosphere in the higher elevation it was frozen but as it had more time to pass through the warmer air in the lower elevation it melted to a cold but wet rain.
As we passed the Cathedral of Learning at the University of Pittsburgh I thought of the fact that someone looking out of a 40th floor window would see snow yet someone else simultaneously standing at the base of the Cathedral would be rained upon.
Winter in Pittsburgh is always interesting.


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