Wednesday, May 15, 2013

Scattered Shower Activity This Afternoon

Scattered showers and isolated thunderstorms will push through New England today in association with a warm front.  Temperatures will climb into the mid 60's today, low to mid 70's tomorrow, and generally mid to upper 60's over the weekend.  A few pop up showers will be possible Saturday but people should keep all weekend plans.

Observations/Short Range Forecast
A surface front and low pressure center are moving through the Great Lakes this morning
WPC surface analysis 330 am
The upper level support for this system is expected to strengthen today.  Already there is a band of showers and thunderstorms in Western PA and NY
NWS Northeast Regional Radar 528 am
Temperatures are much colder this morning than they were yesterday at the same hour.  Many locations in Southwestern New England are near freezing.  Central MA is in the mid 30's, Eastern MA in the upper 30's.  Only the Berkshires were under frost/freeze advisories last night as it simply did not look like it was going to get this cold this morning.
2 m temps 4 am (Image weatherbell)
It is 30 in Western MA, and in the low 70's in Ohio
2 m temps 4 am (Image weatherbell)
By early afternoon the surface chart should look like this
WPC surface forecast 2 pm (image weatherbell)
Temperatures in general are in the mid 60's.  SW CT and NW of Boston should climb into the upper 60's.
06z NAM hires 2 m temps 3 pm (image weatherbell)
Total rainfall this afternoon will be light, unless you get caught under a thunderstorm.  Winds will be gusty this afternoon regardless.
WPC day 1 precipitation outlook
Here is the SPC thunderstorm outlook
SPC Day 1 tstorm outlook
Tonight the Berkshires, NW CT, and Northern Worcester County drop into the upper 40's.  Everywhere else is in the low 50's.  The warm never quite makes it to New England as the boundary stalls out on a line from the Midwest to the Ohio Valley.  The upper portion pushes through New England as a cold front (and brings us whatever precipitation today).  There is another cold front behind this one which will drop temps into the 60's for Friday and Saturday
WPC surface forecast 8 am Thur 
Tomorrow will be dry and afternoon temperatures will be near 75 in Boston and Hartford, near 72 in Worcester and Providence
06z NAM hires 2 m temp Thur PM (image weatherbell)
It will be cooler Thursday night than tonight as the second cold front pushes through.  Winds will be gusty tomorrow afternoon with the frontal passage. Temps will be in the 40's from 495 N and West in MA and north of 95 in CT/RI.  Here is the projected surface chart Friday morning
WPC Surface forecast Friday 8 am
High pressure in West Central Ontario will keep temperatures in the 60's on Friday.  It will be dry 

Saturday/Sunday
A few pop up showers are possible on Saturday but overall it looks to be a nice day.  Clouds will work in as an upper level ridge tries to build.
00z EURO 2 m temp max Sat PM (image weatherbell)
SW CT will be near 70, The Valleys (Merrimack, Blackstone, and Pioneer) and Greater Boston will be around 68.  Higher elevation will be near 65.  In New England we will be right along the border of warm/cool (relatively).  The reason is at 500 mb
00z EURO 500 mb geo heights, Sat PM (image weatherbell)
Saturday afternoon will be the best chance of a shower.  On Sunday temperatures are a bit cooler in the low 60's, but dry.  Have a good one talk to you tomorrow.  














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