Myrtle Beach, South Carolina 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

278
FXUS62 KILM 222339
AFDILM

Area Forecast Discussion
National Weather Service Wilmington NC
639 PM EST Mon Dec 22 2025

.SYNOPSIS...
Cold, dry high pressure will linger through Tuesday night before
moving offshore ahead of a weak, dry cold front. Warmer high
pressure will then build in through Friday with temperatures
rising well above normal for late December. Another cold front
may approach early next week.

&&

.NEAR TERM /THROUGH TUESDAY/...
High pressure moves off the coast tonight leading to pretty
aggressive moisture advection. Current dewpoints in the teens wind up
in the 50s by the period`s end. This leads to a brief window of
overcast skies according to guidance even though the moisture is
only through a depth of 6kft with dry air above. This cloud layer
will manifest during the latter part of the overnight through about
midday. Thereafter the dry air will mix down enough for at least
partial breaks of sun from west to east. Despite the lack of full
sun Tuesday afternoon there will be sufficient WAA for highs in the
mid 60s.

&&

.SHORT TERM /TUESDAY NIGHT THROUGH WEDNESDAY NIGHT/...
Quiet weather with warming through Wednesday ahead of a cold front.
Highs in many areas could reach near 70. Slightly cooler Wednesday
night as the colder air behind the front starts to come in from
north to south, lows dropping by about 5 degrees. A wave of high
clouds may also push through Wednesday night.

&&

.LONG TERM /THURSDAY THROUGH MONDAY/...
Mostly quiet period with temperatures above normal due to primarily
zonal flow aloft. Towards the end of the period a high amplitude
trough and low pressure system could push through to our north,
dragging a cold front through. This would result in a cooldown after
the frontal passage towards the end of the period.

&&

.AVIATION /00Z TUESDAY THROUGH SATURDAY/...
VFR conditions expected through Tuesday. A cloud layer will
develop late tonight or early tomorrow but should remain above
MVFR for the most part. Weak high pressure moving offshore
tonight just north of the area will bring veering of the winds,
becoming SW by Tuesday morning.

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

&&

.MARINE...
Through Tuesday... The early part of near term will be characterized
by both veering and abating winds as high pressure moves off the
coast. As Tuesday progresses however winds will once again increase
in speed as low pressure starts to develop in the NE. After
conditions fall below advisory levels this afternoon they will
remain below thresholds.

Tuesday Night through Saturday...SW flow ~15 kts will become
offshore and lighter Wednesday with the passage of a cold front.
Stronger SW flow will build back in Friday ahead of another front.
Seas generally 2-3 ft with some 4 footers at the start of the period
and Friday night.

&&

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

&&

$$

SYNOPSIS...ILM
NEAR TERM...MBB
SHORT TERM...LEW
LONG TERM...LEW
AVIATION...MBB/CRM
MARINE...MBB/LEW