Heavy Rain Tuesday AM in Southern New England

A cold front will push heavy rain across the Northeast and Southern New England Tuesday AM.  This rain will impact the second half of the morning commute in Eastern MA.  Lets take a quick look at the northeast surface chart

WPC surface analysis 5 PM 

Southerly flow in front of this cold front is helping to transport warm moist air into the northeast.  A quick glance at the regional radar confirms this

NWS Northeast regional radar 

By morning all that activity will be moving into New England.  People who head to Boston before 8 AM will just have to deal with the normal headache traffic unless some moron decides to play bumper cars on the Pike or 93.  Here is the simulated radar as of 8 AM

24 hr 18z HRRR simulated radar valid 8 AM (image Weatherbell)

This model is hinting at some snow in upstate New York on the backside of this.  I wouldn't anticipate accumulation but these April snow threats are getting old.  The rain will continue through mid afternoon but it should be done before the Red Sox game (and Mets, Phillies, Nats - see this post).  Temperatures aren't all that bad despite the rain.  Low 50's will accompany the rain.  Temperatures will drop behind the cold front Tuesday night.

WPC Tuesday 8 PM surface forecast

The good news is we should get back up near 70 this weekend.  Total rainfall is in general 0.5 to 1.25" of rain with isolated higher amounts.

18z Hires NAM total precipitation through 8 PM Tuesday (image Weatherbell)

Enjoy your night.

-Zack Green