Area Forecast Discussion
Issued by NWS Newport/Morehead, NC

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FXUS62 KMHX 142017

Area Forecast Discussion
National Weather Service Newport/Morehead City NC
317 PM EST Thu Dec 14 2017

A dry cold front will move through this evening followed by high
pressure from the north. Low pressure will move northeast across
the area Friday. High pressure will build in from the west
Friday night through Sunday. A complex frontal system will
affect the region early next week.


As of 300 PM Thursday...Dry cold front will mover across area
from north early this evening but basically just a wind shift
with dry atmosphere and mainly zonal flow aloft, thus very
limited cold advection is expected behind the front. Skies will
remain clear for most of the night with some mid clouds
developing late ahead of an approaching mid level trough. Lows
are expected to be 30-35 inland and 35-40 coast.


As of 300 PM Thursday...Approaching mid level trough will induce
weak cyclogenesis along stalled frontal boundary to south and
models in good agreement of low tracking NE across area by late
afternoon. Models also keep precip well north and east of area
but some mid and high clouds expected. Track of low will result
in temp gradient of around 50 NW to near 60 SE.


As of 300 AM Thursday...Weak ridging builds into the area this
weekend followed by a complex system moves into the region early
next week bringing better chances of rain.

Friday night...Another mid level trough pushes across the
region Fri night with surface low lifting NE of the area.
Lows around 30 well inland to upper 30s to around 40 coast.

Saturday through Sunday...Weak ridging and sfc high pressure
build into the region this weekend keeping conditions dry. Cool
temps expected Sat with highs in the upper 40s to lower 50s and
lows in the lower 30s inland to around 40 along the coast Sat
night. High pressure moves offshore Sun with increasing clouds
ahead of the next approaching shortwave. Return flow will bring
a warming trend Sun with highs expected in the mid 50s to around

Sunday night through Wednesday...A better chance of rain
expected early next week as a series of shortwave troughs lift
out of the southern plains and lift across the area tapping into
Gulf moisture, however there remains significant spread among
guidance, especially with the strength and timing of the
systems, and forecast confidence remains low. 00z models have
trended a bit slower and drier but it appears the best chance
for widespread precip comes Mon into Mon night. Faster guidance
indicates precip may move in Sun night while slower guidance
suggests precip may linger into Tue night. A northern stream
trough progged to push across the region Tue night/early Wed
with high pressure building into the region Wed. Temps expected
to be above normal this period with predominant SW to W flow
across the region, cooling to near normal Wed.


Short Term /through 18Z Friday/...
As of 150 PM Thursday...High confidence that VFR conditions
will prevail through the TAF period. A dry cold front will cross
the area late today with only patchy high clouds expected with
it. Some mid clouds could develop late tonight as a mid level
shortwave approaches. W winds 10-15 KT will veer to the NW and
diminish this afternoon, becoming light NE tonight.

Long Term /Friday night through Tuesday/...
As of 315 AM Thursday...Pred VFR conditions expected through
Sunday. A shortwave trough and weak surface low pressure push
across the region Fri bringing increasing clouds but cigs
expected to remain VFR. High pressure builds back into the
region over the weekend but will see increasing clouds Sun in
advance of the next system approaching the region. Rain chances
increase late Sun night or Mon with periods of sub-VFR
conditions possible.


Short Term /through Friday/...
As of 300 PM Thursday...Winds have diminished to 10-15 KT most
areas this afternoon but still 15-20 KT outer central waters
with seas 8 feet at Buoy 41025. Wave guidance is underdone that
area, and adjusted manually, keeping SCA there until 7 PM.

Dry frontal boundary will push through area this evening
producing wind shift to NW-N 10-15 KT, and then NE-E around 10
KT overnight. Developing low pressure tracking NE inland of
coast will result in winds shifting back to SW Friday and
increasing to 15-25 KT during afternoon.

Seas expected to subside to 2-4 feet overnight but build back to
4-6 feet by late Friday afternoon.

Long Term /Friday night through Tuesday/...
As of 330 AM Thursday...Winds become NW around 15-25 kt Fri
night as the low rapidly deepens off the mid- Atlantic and New
England coast. Seas 4-6 ft Fri night. Winds gradually diminish
to W to NW around 10-15 kt Sat afternoon with seas subsiding to
2-4 ft as high pressure builds into the region. Winds diminish
to 5-10 kt Sat night, then becomes S/SW around Sun afternoon as
the high moves offshore while seas subside to 1-2 ft late Sat
night and Sun. The next system approaches from the west early
next week but significant uncertainty remains with the details
leading to a low confidence forecast. Do expect winds to
increase some as the system approaches and have SW winds
increasing to 10-20 kt with seas building to 3-5 ft Sun night
and Mon at this time.


MARINE...Small Craft Advisory until 7 PM EST this evening for AMZ152-


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