Weather systems have slowed to a crawl in the Eastern United States as our Omega Block sets up in the upper atmosphere with high pressure right over the Northeast. In the big picture, that means a continuation of our dry weather and above normal temperatures. Looking at the small details, however, there will be some things going on in the short term to bring us some changes.
The only subtle change in our weather will come tonight and Friday morning. On the eastern side of the Omega Block is an upper level low. This low will be off the New England coast and will dive south just off the coast during Friday. While this low will never move inland, it may turn our winds into the east just enough to cause our temperatures to ‘dip’ a bit Friday and throw a few extra clouds our way late tonight and early Friday morning. These clouds will burn off by midday and we’ll be back into bright sunshine after that.
With that low moving away from us Saturday, high pressure will re-establish itself over us so we see no reason to shift away from a forecast of dry, sunny and warm weather this weekend through to at least Tuesday…and perhaps beyond. The tricky part of the forecast is trying to gauge when the block pattern will break down. There are signs that a second upper low on the western flank of the block will meander from the Plains into the Mid Atlantic. This low may be just close enough to us to bring us a shower or thunderstorm threat by mid-week, however, our confidence is still low. In fact, some reliable computer models suggest we may stay dry through all of next week.