Clearing Skies on Saturday

A cold front and associated low pressure has pushed through New England and off the coast.  Skies are overcast behind the front but that will change later this morning.  Temperatures will warm to the mid and upper 50's.  A few spot rain showers are possible north of the MA Pike this evening and again tomorrow morning as a few weak impulses work through New England.  Patriots Day is looking ideal for the runners as temperatures will be in the 50's.  Last year it was over 80 so this will be a welcome change (for them, not the rest of us).

Big Picture
The surface chart shows the front offshore as well as weak low pressure in the Great Lakes
WPC surface analysis 606 am
The water vapor satellite image shows drier air working into New England.  It also shows the front's and low pressure systems
NOAA GOES_East Water Vapor Satellite 645 am
The Northeast radar is quiet.  It shows showers exiting the Maine coast
NWS Northeast Regional Radar 708 am
Here is the Great Lakes radar which shows some precipitation associated with the low pressure system
NWS Great Lakes Regional Radar
The main driver of this system is an upper level low which will slowly work towards the east.  Here is the upper level feature
06z NAM 500 mb vorticitiy (NCEP) valid 10 am
Click to enlarge the image.  The max in Maine is associated with the low pressure moving off the coast.  Several max's in the Great Lakes will led to two shots of showers this weekend but they will not be widespread.  Here is the Jet Stream
06z NAM 250 mb heights, winds (NCEP) valid 10 am
Finally lets look at the current temperatures.  First up the national outlook
USA 2 m temps 6 am (image weatherbell)
This is 6 am so of course most of the country is cold.  However the dip in the jet has made it unseasonably cold.  Here is the surface temperature anomaly chart for this morning off the EURO
00z EURO 8 am 2 m temp anomaly (image weatherbell)
Here is the current New England and New York temperatures
6 am 2 m temps (image weatherbell)
Short Range Forecast
For Saturday skies clear by 11 am and temperatures climb into the mid to upper 50's
11z RAP 2 m temp 4 pm (image weatherbell)
Winds will not really be an issue but they will be light out of the west.  Winds could gust to 15-18 mph this afternoon
11z RAP mslp, max wind gust 3 PM (image weatherbell)
Some showers will develop between 8-11 PM tonight.  The NAM hires likes the action North of I-90
06z NAM hires simulated radar 11 PM (image weatherbell)
Lows tonight will be in the upper 30's.  Sunday looks to be similar to today.  There could be a light shower around 5 or 6 am but those will pass and leave a mix of sun and clouds.  Temperatures will be cooler than today
00z EURO 2 m max temps Sunday PM (image weatherbell)
Winds will remain fairly light.  On Monday morning the surface chart is expected to look like this
WPC 8 am Monday forecast
A storm coming out of the SW (see 500 mb chart and jet stream) will move up through the Plains.  A warm front will try and push into New England so I cannot rule out a light shower early Monday morning.  This may not arrive in time to get Monday into the 60's, but it will for Tuesday, Wednesday, and Thursday.  First pitch for the Red Sox game at 11 looks like this
06z NAM hires Monday 11 am 2 m temp (image weatherbell)
I will be posting about the longer range including Hurricane Season later this morning or afternoon.  Have a great weekend!


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