Friday, May 20, 2016

Pleasant Weather Friday Evening and Saturday

High pressure is in control this afternoon.  Temperatures are mild and conditions are dry.  Low pressure will slowly track northeast across the Southern states and will emerge off the Mid Atlantic coast Saturday afternoon but not before a decent Saturday.  Conditions deteriorate Saturday night as a spring Nor'Easter passes south of New England.  Steady rain will be confined to the overnight hours and the heaviest will be closer to the South Coast.  Northeast winds on Sunday will make for a dreary day.

Temperatures as of 1 PM are in the mid 70's inland and near 70 at the coast.
RTMA 2 m temps 1 PM (image Weatherbell)
 The surface chart shows high pressure in the northeast and a developing low near the Gulf Coast
WPC Surface Analysis 11 am 
The low will deepen overnight.  There is a lot of moisture associated with the disturbance right now.  Some signals indicate rain by 5 PM tomorrow night while others keep the rain out of the region until after 8 PM.  Let's compromise and say rain showers begin around 630 tomorrow.  I'll evaluate the radar trends tomorrow.  High temperatures are in the low 70's in Central/West but closer to 75 in E/NE MA. 
NWS NDFD Maximum Temps Saturday (Image Weatherbell)
Skies remain sunny until noon time when clouds will steadily increase.  Here is the 8 PM surface forecast tomorrow
WPC Surface forecast 8 PM Sat
We get stuck in a bit of dreary weather pattern after this.  Highs on Sunday will stay in the 50's with occasional showers.  I'll keep an eye on the timing tomorrow.

-Zack Green

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