Monday, January 21, 2013

Localized Snowstorm

FINAL CALL (MON 8AM) - Norlun/inverted troughs can be extremely finicky when it comes to where the heaviest band(s) of snow situate.  This one will be no exception.  I fine tuned yesterday's map to include two max zones.  The first max zone will be over the Cape and extreme southeastern MA.  The second max zone will be over extreme NE coastal MA - SE NH - SW coastal ME.  In these max zones I am going for a general 4-8", but please remember that some could get more than that if the placement of the heaviest snow band is just right.  Norluns are known to drop 12"+ in one town and then just an inch or two a few miles away.  So you can see why I labeled this post 'localized snowstorm.'  I  can only give you my best estimate where the heaviest bands will set up.  However, these events are difficult to forecast, so that band could set up further north into Portland, ME or further SW and affect the Boston metro area in a much bigger way.

Regardless, snows break out in western New England by early afternoon and overspread the area during the overnight.  The heaviest snow for eastern sections will occur between midnight and 3AM.  Snow tapers for all by sunrise.  My guess is for school for 95 percent of communities tomorrow.  Updates throughout the day as needed.  

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