Rain in Southern New England Today

Low pressure will advance up the coast as a cold front approaches from the west,  Rain will overspread the region this afternoon and this evening. Some pre frontal showers have broken out ahead of the the main rain shield which will make the back to work/school commute extra special.  Hey at least its not snow or ice as temperatures will max in the upper 30's/low 40's with a 5-10 mph east wind.

General Overview
There are some showers present this morning across Southern New England.  These will end shortly but there will be some pockets of drizzle through the morning.
NWS Northeast Regional Radar 
North and west of Worcester could see some slick spots this morning as temperatures are right around freezing.  In VT/NH winter headlines have been issued by the Albany and Portland NWS offices.  We do not need headlines in SNE as temps are in the upper 30's in S Central MA/NE MA and near 40 in SE MA/RI.
2 m temps 5 AM (image Weatherbell) click to enlarge
The system is still off the Mid Atlantic coast.  Here is the forecast surface chart/precipitation for 7 AM.
WPC Surface Fronts/Precipitation Tuesday 7 AM 
Short Term Forecast
The rain shield will advance North throughout the morning.  By 2 PM the rain will be through CT and RI and ready to enter MA.  Temperatures hold steady in the mid to upper 30's through early afternoon.
10z HRRR sim radar Tuesday 2 PM (image Weatherbell)
Temperatures will rise a bit as the rain arrives thanks to the low center advecting (advection- the transfer or heat or matter by flow of a fluid, especially horizontally in the atmosphere or sea) some warmer air into our region.
NWS Model blend max temps Tuesday (image Weatherbell)
By the evening commute it is pouring.  Welcome back to reality and to 2017 everyone!
10z HRRR simulated radar 6 PM Tuesday (image Weatherbell)
Precipitation begins to pull away around midnight as the low passes through the region,
WPC Surface Fronts/Precipitation Wednesday 1 AM
Total rain is expected to be 0.5-1" mainly between 2 PM-2 AM.
NWS/WPC precipitation forecast through Wednesday 7 AM (image Weatherbell)
It will take some time for the air mass to change.  The trailing cold front will not exit into the Atlantic until late AM/early PM Wednesday.  Lows tomorrow morning are above freezing so the flash freeze risk is low.  Temperatures rise into the low to mid 40's before the front arrives.  Some snow squalls will accompany the front through Southern New England particularly in late afternoon/early evening.  Temperatures return to winter levels at the end of the week.  Several atmospheric disturbances will rotate through with each disturbance bringing colder air.  Some snow is possible Thursday night into Friday AM but this appears minor as of now.

-Zack Green


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