Friday, December 4, 2009

The Latest on Saturday...

No real change to the Saturday forecast everyone!

Low pressure develops along the coast and that means a cold rain by early Saturday morning. Temperatures will start out very close to 40 and hover there for a while before slowly lowering through the 30s by late afternoon and evening. Critical values in the atmosphere will be a little too high for snow for most of the day from the I-95 corridor east, but a mixture of rain and wet snow is possible during the afternoon well west of I-95.

As the coastal storm moves north-northeast and begins to pull away from the area, the atmospheric profile will get colder. While often in this situation drier air moves in with the cold, that won't necessarily be the case here. An upper level disturbance will still have to cross from the west and that will leave more available moisture for Saturday evening. It's then that I think we'll have our best shot at some snow in the Metro Richmond area.

With relatively warm ground temperatures, it will be hard to get anything to stick, although since it will be nighttime we may see some light accumulation on grassy surfaces, decks, etc. The roads should not be an issue. Stay tuned for any updates...

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