Sunday, April 30, 2017

Seasonable Mid to Late Spring Weather Through Tuesday

UPDATE- Thunder!  I expected this to be further north, but here we are.  


High pressure is in control to our north which has lowered temperatures considerably from just yesterday.  A cold front dropped south of Southern New England yesterday afternoon/evening.  You probably noticed the wind increase if you had all your windows open like yours truly. Mother Nature is going to have a hard time making up her mind in regards to what type of weather she wants us to have over the next 48-72 hours.  Let's try to time it out.
24-hour temperatures change valid 9 AM (image Weatherbell)


General Overview/Short Term Forecast
Temperatures as of 10 AM are in the low to mid 50's.  Temperatures will get into the low to mid 60's.  Our first chance of rain showers will be in the early afternoon hours today, mainly north of the Pike.
NWS Northeast Regional Radar Loop 10 AM
Some of that convection in New York will reach MA/NH/VT between 1-3 PM.  The visible satellite shows clear skies right now, but lots of clouds to our west.
GOES_East visible satellite 915 AM (NOAA/NWS/NCEP)
Notice the well-defined spin in Oklahoma and Kansas?  That is the center of a massive storm system that has brought flooding and severe weather to the Central US.  Unfortunately, this storm has blood on its hands as the storm has claimed 7 lives and injured hundreds more.  Here is the where the storm will be at 2 PM.
WPC Surface Fronts/Precipitation Sunday 2 PM
As the storm system slowly moves east tonight, it will help lift the frontal boundary to our south back north again.  This will touch off several showers after midnight.   These should be gone by 4 AM.  Monday morning and early afternoon look nice, but this won't last long.  Temperatures will depend on just how far north the warm lifts.  The National Weather Service likes the front reaching the Merrimack Valley.
NWS Maximum Temperature Forecast Monday (image Weatherbell)
Showers will again be possible after 4 PM as the Central US storm system gets closer to our neighborhood.
WPC Surface Fronts/Precipitation Monday 8 PM 
We will get most of our rain from this system Monday night into early Tuesday morning.  The precipitation will be over and done with by the AM commute.  Some drizzle and light showers will be possible throughout the day as the cold front lags behind the precipitation.  Winds will be gusty Monday night through Tuesday afternoon.  Gusts 30-40 MPH will be possible.  The sun is expected to come out later Tuesday afternoon.  Temperatures will rise into the 70's when that happens.
NWS Maximum Temperature Forecast Tuesday (image Weatherbell)
I'm tracking a storm that has the potential to be much more significant late Thursday into at least Friday.  Much more on this system throughout the week,

-Zack Green

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