Sunday, January 18, 2009

Early Sunday Morning Update...

All along I've been saying this won't be a big event, but honestly I thought the model data would be putting out a bit more by now. It looks quite dry over the region and this dry air is going to take some time to dislodge. The upper level energy that will be swinging over the region late today through Monday is quite significant and may still trigger some precipitation. The model data continues to show two pieces of energy to be dealt with. As I mentioned in the Saturday afternoon post, the lowest layers of the atmosphere will warm enough today that any precipitation may be liquid during the afternoon and early evening. That said, I don't think we'll see more than sprinkles (or possibly some flurries). There might be a better shot at some light precipitation overnight. Of the two main short range models (GFS & NAM), the GFS is now quite dry. Earlier it had painted more precipitation over us. It does spit out minimal precipitation by Monday morning and if snow lovers are lucky, it would be a dusting of the white stuff. Meanwhile the NAM now has a more significant piece of upper energy crossing the Commonwealth on Monday, leading to a period of light snow that could accumulate. This matches the European, which continues its focus on this second piece of energy. SO...it remains possible that some of us could have a white ground on Monday or even Monday night, especially the grassy surfaces. While it wouldn't be the "snowstorm" that many are looking for, it might put that small taste of winter weather in the air again. As always, stay tuned...

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