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by fireman5214
on 18/1/12
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@NazarethPatch
Real Wx Services


Information on the SWFE (southwest flow event) from the 12 Z ECM by 96 hours .01-.10 liquid precipitation has fallen all of eastern PA into NJ and NYC north into Southern NY ..540 line is N of KPIT but then goes south east from there along the PA/MD border ..temperatures are supportive of snow.. by 102 hrs .25-.50 in a narrow pocket from central PA to NW NJ to SE NY. Other areas .10-.25..540 line at this point is just to the south of KABE dividing PA and NJ in half till you get to western PA where it turns NW to around erie.. temperatures still supportive of snow...though not liking the closeness of that 540 line..by 108 precipitation is moving out with just .01-.10 left over ..10-.25 along the NJ coast yet..540 line has lifted north into SNE and 850s have warmed up ..So essentially what the ECM would be suggesting is a 1-3 inch snowfall in places like KPHL & NYC with 3-6 inches in the interior. Heaviest precipitation never really gets any further north then Southern New England.. That is the good news off the 12 Z ECM (before the warmer pattern begins) http://a5.sphotos.ak.fbcdn.net/hphotos-ak-snc7/393926_305220106195378_184078291642894_963179_1373724029_n.jpg