Latest discussion from the NWS...show gets going in CNJ around 11 am or so
National Weather Service Mount Holly NJ
930 AM EST Wed Mar 7 2018
.NEAR TERM /UNTIL 6 PM THIS EVENING/...
No major changes with the 930 update from the previous
forecast. Some models are shifting the axis of heaviest
precipitation slightly further east. However, the low is still
off the Delmarva coast and the vorticity maximum is just
starting to come in to the area. Additionally, high resolution
models are running slightly low on temperatures across the
coastal plains which would suggest that the change over is
depicted too early.
Still expecting mesoscale banding with high snow rates to
develop in the next few hours, and it looks like the bulk of the
precipitation could continue through the afternoon.
No changes to the headlines from the early morning update. At
that time, areas that were under Winter Weather Advisories were
upgraded to Winter Storm Warnings, and Winter Weather Advisories
were issued for central portions of the Delmarva, parts of
southeast NJ, and coastal Monmouth county.
MET/MAV MOS guidance were too warm for max temps this afternoon, and
this is probably due to temps going into the early morning hours.
Used a blend of NAM/GFS 2-M temps for highs generally in the low to
mid 30s north and west of the Fall Line, and in the mid to upper 30s
most elsewhere and in the low 40s approaching coastal NJ and
southern portions of the Delmarva.
Closer to southeast NJ and southern portions of the Delmarva,
temperatures will be warm enough for generally all rain, and locally
heavy rain is possible at times this afternoon. In addition, with
weak mid level CAPE sliding along the coast, a few embedded
thunderstorms are possible. Will introduce slight chance for thunder
for mainly coastal areas this afternoon.
Tight pressure gradient, combined with strong LLJ, will result in
increasing easterly flow this afternoon, ranging from 15-25 mph with
25-35 mph gusts for much of southeast NJ and into the Delmarva. The
strongest winds will be right along the coast, and this onshore flow
will result in tidal flooding later today. The Tides/Coastal
Flooding section below has more information.
Winds farther inland will not be as strong.
Given temperatures will be in the upper 20s to low 30s, this is
expected to be a heavy, wet snow that will result in tree and power
line damage leading to power outages.