SPC MD 2188


MD 2188 Image

Mesoscale Discussion 2188
NWS Storm Prediction Center Norman OK
1142 AM CST Tue Dec 03 2019

Areas affected...portions of northern NH into ME

Concerning...Heavy snow 

Valid 031742Z - 032145Z

SUMMARY...Heavy snowfall with rates of 1-2 inches per hour will
continue to impact portions of northern ME into northern NH through
early evening. The greatest snowfall rates are expected across parts
of central into northern ME.

DISCUSSION...Heavy snow associated with an intense coastal low
offshore of ME will continue to pivot north/northwest through the
21-00z time frame. Strong isentropic ascent is evident in water
vapor satellite loops as the warm conveyor wraps around the
north/northwest sides of the cyclone. Forecast soundings across
northern portions of ME continue to indicate deep, saturated
profiles through the dendritic growth zone. This will aid in
efficient snowfall production, further aided by strong ascent and
warm advection in the 850-700mb layer. The heaviest snowfall rates
are expected from central into northern ME through 21-00z. Farther
west, periods of heavy snow are possible into northern NH, aided by
orographic influences. Though stronger forcing will be shifting east
of this area over the next couple of hours.

..Leitman.. 12/03/2019

...Please see www.spc.noaa.gov for graphic product...


LAT...LON   47086780 45746782 45356821 44866882 44466935 44376976
            44257061 44337152 44537157 45077128 45877041 46487018
            46996990 47546929 47526844 47346798 47086780 

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