High pressure builds into our area for the weekend, but an upper air low pressure system to our west will affect our weather.

On Saturday, the upper air low with some upper air vorticities will bring mid-level cloudiness (altocumulus).  It will start out sunny, but expect the mid-level cloudiness for much of the day on Saturday.  High 42.

There wasn’t as much cloudiness as I predicted.

On Sunday, it will be mostly sunny and a bit milder. Some cloudiness moves in during the late afternoon.  High 44.

All models are showing a coastal storm to form off the southeast coast and move east of our area, missing us early Monday.  Not much variation with the various models, but it we must keep in mind that the same models didn’t capture the westward track of this morning’s snow.   So right now, no snow is expected from this storm.

Later Monday, the upper low to our west is expected to spawn a weak secondary surface low around Delaware bay, giving us light to moderate snow late Monday through Tuesday.   This is a low confidence forecast.

Here are the concerns: 1. The initial southeast low tracks closer to the coast than the models currently forecast.  2, The upper low phases with the coastal low that tracks closer instead of spawning a separate weaker low in Delaware on Tuesday.  While this is not the current expectation, this possibility needs to be watched, especially since the models did so poorly in advance of this morning’s snow.  

I’ll keep an eye on this, but right now, the models are going with a diffusely organized secondary low with snow on Tuesday.