The last 2 days were the second trip into an onshore flow and we can see what an northeast wind and a little New England air can do this time of year. Yesterday we could not get out of the 60s in many areas except for South Jersey & Eastern Pennsylvanai which saw 80s and more heavy rain. Today temperatures are struggling again with lots of clouds and some scattered showers. At least Wednesday and most of Thursday should be nice and Sunny. Temperatures will be in the mid 70s to near 80 Wednesday and we will reach into the 80s Thursday. The next cold front approaches Thursday night with a shower or thunderstorm. This appears to be the easy part of the forecast.
The forecast problem comes for Friday & Saturday as models are showing different outcomes for the next trough to move into the Eastern US. The NAM, Canadian, and to some extent the European model would argue for a stronger upper air disturbance dropping to the...READ MORE AT http://www.meteorologistjoecioffi.com/index.php/2017/07/25/rain-threat-friday-saturday-onshore-flow/