3-5-2018 – Major Storm Update #2

Good evening!
 
Here’s an update on our snowstorm coming for us on Wednesday.
 
Timing:
Snow begins late Wednesday morning, becoming steady by midday. Heavy snow starts in the afternoon, with the height of the storm being from Wednesday evening’s commute through Thursday morning’s commute. Snow will be tapering off by midday Thursday.
 
Uncertainty / Precip Type:
All snow is expected, except perhaps a brief period of rain at the very end of the storm. I do not expect the rain/snow line to reach Dracut at any point on Wednesday or early Thursday morning. However, the location of the line will still play a role in exactly how much snow we get. Some fluctuations in the snow forecast in either direction are possible as such, but I do not anticipate needing to dramatically change the forecast.
 
Other Hazards:
Wind gusts over 30 mph will be possible. This will result in reduced visibility and the potential for blowing and drifting snow. This, combined with the weight of this heavy wet snow and weakened tree limbs from our last storm, will result in a risk of power outages.
 
Snowfall Totals:
I have Dracut in the 10-14″+ range.
 
snow map 2018-03-05 500P.png
Expanding on the precipitation type discussion, those in the 10-14″ and 14-18″ ranges should stay entirely snow, except perhaps a brief period of rain around midday Thursday in southern and easternmost sections of the 10-14″ range. This should not affect overall totals. 7-10″ should be mostly snow but there is more uncertainty on that. Extensive mixing and high uncertainty will exist in the 2-4″ and 4-7″ range. 0-2″ should be mostly rain.
 
0-2″: Southeast MA, Southern RI, Southeast CT
2-4″: southern suburbs of Boston, central and northeast Rhode Island, parts of east-central and south-central CT, as well as Cape Ann in northeast MA
4-7″: Boston, North Shore suburbs of Boston (except Cape Ann), southwest suburbs of Boston, north central Rhode Island, parts of south central CT
7-10″: Coastal NH, Coastal Northeast MA from Salisbury to Ipswich, areas around and just north/west of I-95 in MA, northwest RI, central and southwest CT
10-14″+: Central and northeast Massachusetts around and west of I-495 (including Dracut), most of western Massachusetts, most of Vermont, most of New Hampshire, northern and west-central CT, most of Maine
14-18″: Most of the higher terrain of New Hampshire as well as the western Berkshires and higher terrain of southwest Vermont
 
Have a great evening!
-Nathan

Published by Nathan Coram

Hello! I'm Nathan Coram, a 19 year old meteorology student and weather geek, and am going into my junior year at UMass Lowell as a meteorology major. I am the current Vice President of the UML American Meteorological Society Local Student Chapter. Prior to at UML, I attended the Dracut school system for my K-12 years, having graduated from Dracut High in 2018. I first got into weather with the December 2008 ice storm, which knocked out my electricity for 4 days. I had no idea how it could be raining and becoming ice immediately, and how rain can knock out power. (Now I do - warm layer aloft, cold air at surface). But I didn't really get into it until the heat of July 2010 and specifically a few severe weather events during that month, followed by the year 2011, which featured several high profile weather events. Since then I have had a growing interest, and am hoping to make it into the meteorology field, preferably with NOAA/NWS. But for now, I'm blogging here, helping with the UML Weather Center social media, and tweeting about the weather on my own account as well. Thanks for visiting!

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