A large upper-level ridge dominates over the eastern and central
portion of the United States. The jet stream should remain to north
over this region for the next few days at least. An amplified trough is
now observed over the Great Basin. It seems like this trough will have
a role in moving this big old ridge out of the eastern U.S. later on
this week sometime. In addition, a tropical easterly wave is bring
plenty of moisture over the Gulf Coast states. This tropical moisture
fetch should not make it over to the mid-Atlantic states until later on
this week.
The GFS model has the ridge moving off the coast
during the middle of the week and replacing it with a slight negatively
tilted trough. Temperatures should become more unseasonable towards the end of the week over KHSE. Winds will pick up as well. The best chance for precipitation accumulation seems to be Thursday evening and Friday morning. I'd give it a 33% chance of occurring. Will revise the WX discussion when it is deemed necessary or if time permits.
~Ng
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