North Myrtle, South Carolina 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

421
FXUS62 KILM 230610
AFDILM

Area Forecast Discussion
National Weather Service Wilmington NC
110 AM EST Tue Dec 23 2025

.SYNOPSIS...
Cold, dry high pressure will linger through Tuesday night before
moving offshore ahead of a weak, dry cold front. Although a few
cold fronts push offshore through the week, temperatures will
remain on the warm side as we do not tap into much colder air
until early next week.

&&

.NEAR TERM /THROUGH TONIGHT/...
High pressure offshore will push a warm front northward this
morning. Aggressive low level warm air advection will follow for much
of today. Temperatures will be several degrees warmer than Monday. A
shortwave ahead of a surface front to our west will move through
southern VA and northern NC later today. This is likely to bring
some cloud cover during the late morning and early afternoon,
cutting highs a few degrees from their potential. The thickest cloud
cover will exist over NC. Generally, expect mid to upper 60s, lower
60s in inland NC with increased cloud cover.

A weak cold front will push overnight, maintaining light boundary
layer winds shifting from westerly to northerly after midnight. Cold
air advection will be quite weak following the front, so lows should
only drop into the mid and upper 40s.

&&

.SHORT TERM /WEDNESDAY THROUGH THURSDAY NIGHT/...
Overall expect quiet and warm weather through midweek. Ridge
builds up the Mississippi Valley maintaining H5 heights close
to 580 dem. After a warm start Wed morning, temps will reach up
near or just above 70 degrees on Wed. Some weak CAA behind a
cold front and then clear skies and calmer winds Wed night will
produce lows dropping into the 40s overnight Wed. Temps on Thurs
will be up around 70 once again. A shortwave will pass to our
north on Thurs pushing cold front off the coast by Thus night.
May see some gusty SW winds on Thurs aftn. Should see a few
clouds over SE NC, but any pcp will remain north. Temps Thurs
night will be closer to 50 as we do not tap into any
substantially colder air with any of these fronts.

&&

.LONG TERM /FRIDAY THROUGH MONDAY/...
Another system will ride by to the north on Fri with mainly
zonal flow aloft. Should see more in the way of clouds on Fri
and slightly cooler temps in the 60s most places. The 850 temps
fluctuate a bit but overall remain on the warm side through the
weekend. Does not look like we will tap into colder air until
next Mon. Unseasonably warm temps near or above 70 should
continue for highs and well above normal overnight temps in the
50s both Fri night and Sat night. Stronger cold front will come
through Sun night with temps dropping back below normal for the
beginning of the work week.

&&

.AVIATION /06Z TUESDAY THROUGH SATURDAY/...
VFR this morning. Some mid level clouds will develop in response to a
mid level shortwave today, nearing 3-4k feet AGL this afternoon.
Southwesterly winds will gust up to 25 knots this afternoon due to
an increasing low level jet ahead of a weak cold front. VFR with
clearing skies tonight. The low level jet should remain in place
this evening, forcing some mention of LLWS. Weak westerly winds this
evening will become northerly overnight behind the front.

Extended Forecast... Mainly VFR. Some restrictions possible Friday
with increasing clouds along a warm front.

&&

.MARINE...
Through Tonight...Veering winds and warm air advection are
expected today as high pressure shifts offshore. Southwesterly
flow will increase to around 15 knots this afternoon in a
compressed gradient ahead of the cold front. Gusts should remain
below SCA thresholds thanks to inefficient mixing over cooler
water temperatures. The increased winds will force wind waves to
increase to around 3-4 feet during the afternoon.

Wednesday through Saturday...
Diminishing offshore flow on Wed will allow seas to drop to less
than 3 ft. Winds veering from NW to N on Wed will come around to
onshore by Wed night and around to the S on Thur. Winds will
continue to veer to the SW becoming a bit gusty Thurs aftn ahead
of another front bumping up seas a bit. Winds will then veer
around to the W to NW by Thurs night as front moves offshore.
Then back around to the N to NE on Fri and continuing to come
around to the W to SW by Sat as yet another system moves
through. Seas generally remain in the 2 to 4 ft range and we do
not tap into colder air until next week.

&&

.ILM WATCHES/WARNINGS/ADVISORIES...
NC...None.
SC...None.
MARINE...None.

&&

$$

SYNOPSIS...ILM
NEAR TERM...21
SHORT TERM...RGZ
LONG TERM...RGZ
AVIATION...21/CRM
MARINE...RGZ/21