Thanksgiving Week...
We are looking at a lot of changes and transitions this week and we are in the middle of one right now. After a cold weekend temps are rebounding nicely and will top out in the lower 60s tomorrow afternoon. As this warmth works in, it's interacting with the cold, the result...clouds, fog and showers. The lift associated with the warm advection is shifting north of us and consequently so is the precipitation so just a few lingering showers or sprinkles during the night. Tomorrow we will spend the day in the warm sector...clouds should burn off enough midday so that we reach 60 if not better out ahead of the coldfront. The coldfront will slip through tomorrow evening...once again, very little precip...but pretty dramatic temp drop from tomorrow's 60s to highs in the mid 40s on Wednesday. The good news is that traveling around New England will be precip-free...just a bitter wind. Same can be said for Thanksgiving Day, high pressure will crest over us, as it does so, clouds will spread back in the afternoon out ahead of another front. Weak low pressure may develop along the front but most of the energy will stay with the parent low back in the Lakes but upper level diffluence and some overrunning will produce precip Thursday night through Friday morning. Now, even though surface temps will climb into the 40s during the day and mid level temps get above the freezing mark too, the air will be dry and evaporational cooling should allow for mid level temps to drop back down to near freezing. Therefore, even though the surface and boundary layer will be above freezing, there will likely be some sleet pellets or maybe even some wet snowflakes mixing in at the start before the warmth floods in to make everything all rain early Friday morning. This will end up being a benign event and aside from wet roads no other issues are anticipated at this time. The front sweeps through Friday in the early afternoon and more cold and relatively calm conditions exist behind the front for next weekend.
