Area Forecast Discussion
Issued by NWS Mt. Holly, NJ

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FXUS61 KPHI 241328

Area Forecast Discussion
National Weather Service Mount Holly NJ
928 AM EDT Sat Mar 24 2018

High pressure extended from Ontario and Quebec down into the
eastern states early this morning. The high will build slowly to
the south and east over the weekend, as low pressure passes
across the southeastern states and off the Carolina coast. The
high is expected to remain over the eastern states during the
early and middle parts of the new week as the strong low
meanders over the western North Atlantic. A cold front
approaching from the west is forecast to arrive on Friday.



Mid-morning update:
Current forecast seems on track for a mostly sunny and pleasant
day across the forecast area. Only minor adjustments were made
for temperature and sky cover. Morning VIS stlt imagery compared
to 24 hrs ago shows considerable melting of snow cover across
upper Delmarva, much of south NJ and the Phila metro area. Snow
cover remains over much of southeast PA and parts of northern
and central NJ where up to a foot or more of snow fell on Wed.
Melting will continue today with the strong late March sun and
max afternoon temps similar to yesterday, or perhaps a couple of
degrees warmer.

Previous discussion:
High pressure will remain well north of the area today.
Meanwhile, an area of low pressure aloft will be approaching the
area. This will result in a dry day, but some extra cloud cover
later today. It will remain below normal with regards to
temperatures, but not too bad a day. Highs will generally top
out in the mid/upper 40s in most areas, with a few low 50s
possible. Winds will be from the north or northwest at 5 to 10


Fair weather will continue tonight. Skies will be mostly clear
overnight. Lows will range mostly in the mid/upper 20s with
teens across the southern Poconos and near freezing across metro
Philadelphia. Winds will be light from the north or northeast.


A mid level low off Cape Cod on Sunday is forecast to pull a
trough over our region from north to south at that time. We have
indicated a low or slight chance of showers on Sunday. Any
showers are expected to be mainly in the form of rain. However,
light snow showers are possible in the morning, especially in
parts of eastern Pennsylvania and northern New Jersey.

A mid level ridge is forecast to build overhead from the west
during the period from Sunday night through Monday night. The
axis of the ridge should be overhead late on Tuesday. Meanwhile,
surface high pressure is expected to push into our region from
the north and northeast. Strong low pressure over the western
North Atlantic should remain well to our east. As a result, we
are anticipating dry weather from Sunday night through Tuesday
night. Temperatures are forecast to be below normal until
Tuesday night when they should recover to near normal levels.

The mid level ridge is expected to slide to our east during the
second half of the work week. The surface high is forecast to
lose its influence over our weather as a cold front approaches
from the west. The cold front should arrive on Friday. We will
indicate a gradually increasing chance of showers as the front
nears. Also, temperatures will likely rise a bit above normal
late in the week in advance of the frontal boundary.


The following discussion is for KPHL, KPNE, KTTN, KABE, KRDG,
KILG, KMIV, KACY and surrounding areas.

Today...VFR conditions expected today with high pressure
nearby. There will be some CI/CS and some CU/SC from time to
time this afternoon. Winds will remain mostly NW with speeds 8
to 12 knots.

Tonight...VFR continues with light N winds.

Sunday...Mainly VFR with a low or slight chance of snow and
rain showers.

Sunday night through Wednesday...Mainly VFR.


Another fair weather day expected on the waters. A continuation
of mostly north winds as high pressure remain north/west of the
area and the deep low remain well north/east. Wind speeds and
seas will remain short of SCA conditions both today and tonight.
Seas on the ocean will be mostly 3 to 4 ft and around 2 ft
across Delaware Bay.

Sunday and Sunday night...A Small Craft Advisory is in effect.
Northeast wind 15 to 25 knots with gusts around 30 knots. Waves
on our ocean waters building to 5 to 9 feet.

Monday and Monday evening...Northeast wind 10 to 20 knots with
gusts around 25 knots. Waves on our ocean waters building to 4
to 8 feet.

Late Monday night through Tuesday night...Northeast wind 10 to
15 knots. Waves on our ocean waters 5 to 8 feet.

Wednesday...Northeast to southeast wind around 10 knots. Waves
on our ocean waters 5 to 8 feet.


MARINE...Small Craft Advisory from 10 AM Sunday to 6 AM EDT Monday for


Near Term...AMC/O`Hara
Short Term...O`Hara
Long Term...Iovino
Marine...Iovino/O`Hara is the U.S. government's official web portal to all federal, state and local government web resources and services.