Dameron, Maryland Weather Forecast Discussion

021
FXUS61 KLWX 280758
AFDLWX
Area Forecast Discussion
National Weather Service Baltimore MD/Washington DC
358 AM EDT Sun Sep 28 2025
.SYNOPSIS...
High pressure will build southward from eastern Canada through
much of the week. Meanwhile, Tropical Depression Nine near the
Bahamas is expected to approach the Southeast coast early this
week before stalling then drifting out to sea through mid week.
A strong cold front will track across the area by the middle of
this week bringing cooler and drier weather.
&&
.NEAR TERM /THROUGH TONIGHT/...
Residual light showers and/or drizzle east of I-95 will end
shortly as weak area of low pressure off of the DelMarVa coast
moves away. Otherwise, widespread low clouds and areas of dense
across west of the Blue Ridge will hold on through mid morning
before mixing out after 10 AM. Dry rest of the day as high
pressure builds to the north.
Mostly clear tonight, except for thin high clouds spreading
northward from TD Nine.
&&
.SHORT TERM /MONDAY THROUGH TUESDAY NIGHT/...
Mid-high level clouds will continue to expand northward during
the day Monday as TD Nine approaches the southeast coast. The
latest model trends continue to show TD Nine moving slower and
staying further offshore. Despite this slower and further
offshore track, rain is still expected to affect central VA
Monday afternoon and Monday evening and may reach areas as far
north as I-66. However, the risk of excessive rainfall continues
to diminish for areas of central VA and southern MD. By Tuesday
morning, drier air will start pushing south again on
strengthening northerly winds between TD Nine and building high
pressure over Ontario/Quebec region. Clearing will then take
place Tue night. Low-level thicknesses begin to drop sharply Tue
evening signaling a significant change in air mass/frontal
passage for the middle portion of the week.
&&
.LONG TERM /WEDNESDAY THROUGH SATURDAY/...
A northern stream trough descending across New England will send a
dry front southward during the middle of the week, with strong
Canadian high pressure building behind it. This will shunt any
clouds and moisture southward and lead to declining temperatures and
dew points. Near normal temperatures Wednesday will drop below
normal Thursday and Friday. Highs will only reach the 60s. Dew
points falling into the 40s will support similar lows for much of
the area (remaining in the lower 50s near/east of I-95, while 30s
will be possible in the higher elevations.
The consensus forecast keeps high pressure through the upcoming
weekend, gradually drifting east. Combined with rising heights, this
would lead to a warming trend. While unlikely to occur, there are
still a few rogue solutions that have what becomes of TD 9 not being
affected by the midweek trough, stalling, and then somehow affecting
the east coast next weekend. Stay tuned to hurricanes.gov for the
latest official forecast from the National Hurricane Center.
&&
.AVIATION /08Z SUNDAY THROUGH THURSDAY/...
Morning low clouds will gradually mix out after 14Z with fair
weather cumulus clouds for the remainder of today. Otherwise,
fair weather is expected today through 12Z Wed with only light
rain expected at CHO Monday afternoon and evening.
VFR conditions are expected Wednesday and Thursday, but some north
to northeast wind gusts to 20 kt are possible as strong high
pressure builds into the area.
&&
.MARINE...
Winds will begin to diminish after 14Z today. Winds begin to
strengthen again Monday through at least the middle of next
week.
Strong high pressure will build north of the area Wednesday and
Thursday while a tropical cyclone remains well to the south. The
gradient between these systems may result in Small Craft Advisory
conditions in north to northeast winds.
&&
.LWX WATCHES/WARNINGS/ADVISORIES...
DC...None.
MD...Dense Fog Advisory until 10 AM EDT this morning for MDZ003-501-
     502-509-510.
VA...None.
WV...Dense Fog Advisory until 10 AM EDT this morning for WVZ050>053-
     503-504.
MARINE...Small Craft Advisory until 10 AM EDT this morning for
     ANZ532>534-536-537-540>543.
&&
$$
SYNOPSIS...LFR
NEAR TERM...LFR
SHORT TERM...LFR
LONG TERM...ADS
AVIATION...ADS/LFR
MARINE...ADS/LFR

NWS LWX Office Area Forecast Discussion