Thursday night will become a far cry from the next three nights including Thursday morning. The wind flow becomes southerly on Thursday, bringing more humid conditions with temps close to 70 that day... then we summer on Friday, with temps surpassing 80F. Should be a stellar weekend minus showers on Sunday but with temps in the mid 70s and a coming ridge advertised on the models might reverse the cooler water anomalies off the East Coast. Waters are running pretty cold off the New England and upper mid-atl coast due to the record cold we've just had. Interesting thing to note, it feels like this is the ridge that increases the tendency for more ridging to develop, bringing sustained warmth due to the water temp anomalies warming.
We may have the risk for backdoor cold fronts though, as this seems to happen every spring now and in May. The trough up north may stay far enough away that BDCFs may only reach as far south as NYC.. 500 mb height anomaly maps aren't everything. We don't live at the 500 mbar level. Ridges don't always mean warmth, especially if there's a trough to the northeast which would serve to bring cooler conditions under the ridge to a certain point. I think it all boils down to the placement of the trough over Canada. On the GEFS there does seem to be lingering trough issues, particularly during the period between Monday and Wednesday where there is a brief relaxation in the ridge over the U.S allowing for cooler air to draw in from New England for a brief time before another ridge pulse sends it back north and we torch.. there may also be the risk for some thunderstorms during the times when the flow becomes NWerly.
Still plentiful blocking over the arctic in the AO regions, however not much in terms of -NAO... in fact, looks more +NAO till later in the run where ridging develops again over the Baffin Bay region. -NAO may actually help with bringing warmer than normal temperatures later in May as a -NAO doesn't affect us as greatly as it does in the early spring. I think how hot we get will depend on the placement of the trough in the W US over the coming days, which will also affect our risk for the all-hated BDCF.
All things said I think we're in for a warm to hot period for weather across the eastern U.S for at least the next 2-3 weeks or so, minus the BDCF risk. With cool-neutral to weak La Nina conditions developing over the summer and as I type this (IIRC La Nina brings hot summers to the E US).
Today is a pretty windy day again. Only the 59493th time so far and it looks to be 59494th counting today.