Today’s  early morning run of the NAM showed a significant change from the warmer and wetter run of yesterday evening.

Here’s the trend-   Intensification of the low pressure system developing on the frontal boundary has increased, while the speed of the system has slowed.  As a result, the precipitation starts as rain after midnight, but changes to snow during the early morning hours on Thursday.  The NAM shows a few hours of moderate snow, ending about 10 AM.  (Areas to the far north and west will have much greater accumulations, as the change to snow occurs much earlier.).

Last night’s GFS still showed a somewhat faster and warmer system, but the trend is towards intensification and somewhat slower speed. The slower speed allows more cold air to enter the area.

The Thursday morning commute looks to be a challenge, as some snow, and cold gusty winds move in.

Still too soon to predict specifics regarding accumulation and exact timing.