Looking Wet...
The feel of Summer will return tomorrow before we finally see some wet weather later in the weekend. Winds will generally be out of the SW tomorrow and this will usher in a warm airmass...temps will be highest farther away from SE Mass and an ocean influenced temperature. So, 80 will be common in the Merrimack Valley and through Northern Worcester County too...75-80 for the rest of Worcester County and Metrowest and SW suburbs...70-75 Boston and Interior SE Mass...60s Buzzards Bay & Cape Cod.
The southerly flow will stay active on Saturday as moisture increases and muggy air works in from the south. There won't be much of a trigger during the day for shower development but low clouds and fog may form over parts of SE Mass. In the evening a surface coldfront will work in from the west warm and moisture ahead of it will provide some instability and a this but intense line of showers will form along it and pass through during the night. The front will be through by morning and cooler air will be establishing itself on a NE at the surface. This will provide a nice environment for an overrunning situation with deep moisture working up the Easter Seaboard from the Gulf of Mexico. A strengthening surface low travel along the stalled offshore boundary with significant lift and moisture and therefore copious amounts of rain. This low will be passing by early Monday morning with the heaviest of the rain. At present time, 1-3+" of rain is expected with the heaviest in Eastern MA...this will undoubtedly put a solid dent in the drought, along with rinsing away the pollen and lowering our brushfire threat. There is some concern for this system shifting east and taking the solid rain offshore with it but that fear is getting smaller as the upper level system will be digging and cutting off to the west of us so if anything it would draw a little farther west.
