Area forecast discussion
National Weather Service Newport/Morehead City NC
156 PM EDT Sat may 18 2013
Synopsis...
front will be north of eastern North Carolina. High pressure will
build over the area Monday. A front will approach the area late in
the week and move through eastern North Carolina over the weekend..
&&
Near term /through tonight/...
as of 133 PM Sat...models in good agreement for tonight. Front that
was over the northern sections of the state during the day will have
moved north of the area by the start of the period. Weak upper level
disturbance will swing through the base of the upper trough tonight.
This combined with wet low level southerly flow will help keep probability of precipitation
in the chance range tonight. Biggest chances will be over the
coastal plains where the strongest upper level energy will be.
&&
Short term /Sunday/...
as of 143 PM Sat...weak upper level trough will continue over the
area through the remainder of the weekend. This combined with low
level southerly flow bringing moist air to eastern North Carolina
will keep probability of precipitation in the chance range. Best chances will be over the
coastal plains. Instability increasing so will have increasing
chances of thunderstorms.
&&
Long term /Sunday night through Saturday/...
as of 2 PM Saturday...no major changes to the extended portion of
the forecast. Monday still has the potential to be rather wet as a
middle-level trough lingers in the area...combined with an influx of
low-level moisture from the south and southwest as precipitable
water values approaches 2 inches late Monday evening and Monday
night and have increased probability of precipitation to likely. The middle-level trough
should move offshore Monday night with upper heights building on
Tuesday with convection becoming isolated...mainly along the sea
breeze. With a middle-level ridge in place...expect Wednesday to be
generally dry and warm. Moisture will increase again on Thursday
with an increasing low-level southwest flow ahead of a deepening
upper trough and approaching strong cold front. Probability of precipitation will
gradually increase again Thursday and especially on Friday as the
upper trough deepens. By Saturday...the cold front finally pushes
through the region with any leftover precipitation taking on a
more stratiform character with much cooler air plunging south into
the region. For the remainder of the week...temperatures will
remain fairly stable with daytime highs in the lower and middle
80s and overnight lows in the middle 60s.
&&
Aviation /18z Saturday through Thursday/...
short term /tonight and Sunday/...
as of 138 PM Sat...some showers continue over eastern North Carolina
this afternoon. With upper level disturbance and moist low level
flow tonight will have a continued chance of showers over tafs.
Instability is limited...but cant rule out some thunder. Wind speeds
will be light so any areas that get rain this afternoon and evening
will have a chance of some MVFR fog in the pre-dawn hours Sunday.
Any fog that does form will burn off quickly after sunrise. VFR
expected through the period outside of showers and thunderstorms.
Long term /Sunday night through Thursday/...
as of 2 PM Sat...mainly VFR conditions expected through the
period...though will likely see periods of sub-VFR conditions as
scattered showers and thunderstorms are expected Sunday night into Monday night.
Should begin to dry out Tuesday/Wednesday as middle-level ridging developing.
Patchy fog/stratus will be possible each night given deep
moisture and light winds.
&&
Marine...
short term /tonight and Sunday/...
as of 146 PM Sat...southerly winds over the southern waters with
easterly wind over the northern waters this afternoon with boundary
bisecting the waters. This front will move north of the area by
sunset with southerly flow over all the waters tonight and Sunday.
Loose gradient will keep wind speeds in the 10 to 15 knot range
through the period with seas 2-4 feet. Scattered showers and
thunderstorms with increased wind and seas and reduced visibilities.
No flags expected.
Long term /Sunday night through Thursday/...
as of 2 PM Sat...a light to moderate S/south-southwest flow should persist
through most of the extended period. Could see some borderline Small Craft Advisory
seas over the central waters Monday night...but have kept just
below per latest wave models. Likely to see a good increase in
winds ahead of the next cold front Thursday into Friday.
&&
Mhx watches/warnings/advisories...
NC...none.
Marine...none.
&&
$$
Synopsis...cgg
near term...cgg
short term...cgg
long term...ctc
aviation...cgg/ctc
marine...cgg/ctc
