Brandywine, West Virginia Weather Forecast Discussion

516
FXUS61 KLWX 271843
AFDLWX
Area Forecast Discussion
National Weather Service Baltimore MD/Washington DC
243 PM EDT Sat Sep 27 2025
.SYNOPSIS...
A weak area of low pressure will move parallel to the Mid-Atlantic
coast along a stalled out front through early Sunday. High pressure
will then build southward from eastern Canada through much of next
week. Meanwhile, Tropical Depression Nine near the Bahamas is
expected to approach the Southeast coast early next week before
stalling then drifting out to sea through mid week. A strong cold
front will track across the area by the middle of next week bringing
cooler and drier weather.
&&
.NEAR TERM /THROUGH TONIGHT/...
Rain/showers have expanded northward and encompass much of the
Mid-Atlantic as of mid afternoon. The steadiest rain with
embedded heavier downpours has generally been over the
Appalachians and south of US-50/I-66, but at least a few drops
have been observed in most places up to the Mason-Dixon Line.
Showers will continue to spread NNE across the area through this
evening as forcing and upper-level divergence increases on the
east side of a cutoff low over the TN River Valley and on the NW
side of a weak area of low pressure tracking along a stalled
out front along the Mid-Atlantic coast. The heaviest amounts
are expected southeast of US-29 where totals of 1-2 inches are
possible. Given lack of instability, rain rates should be
manageable, especially given the moderate drought conditions
present across much of the area. Therefore, the rain should be
mostly beneficial for all.
The rain will start exiting the area this evening and should be
out of the area by midnight tonight. Some clearing will occur
overnight, but areas of low clouds and/or fog are likely to
develop for much of the area as low-level moisture remains.
&&
.SHORT TERM /SUNDAY THROUGH MONDAY NIGHT/...
High pressure will build north of the region Sunday through
early Monday keeping generally fair and dry weather, except for
some morning low clouds and/or fog.
Rain or showers associated with Tropical Depression Nine may
start reaching central Virginia by daybreak Tuesday, but recent
model trends continue to keep most precip further south and
more offshore, lessening the risk of excessive rainfall locally.
&&
.LONG TERM /TUESDAY THROUGH SATURDAY/...
Some lingering mid-level energy swirling around the Mid-
Atlantic region could throw a few showers our way on Tuesday,
primarily along and south of I-64. Elsewhere, high pressure
will provide dry conditions with some low and mid-level clouds
and a few peeks of sunshine. Temperatures will be near average.
On Wednesday, high pressure will hold strong to allow for dry
conditions to continue and temperatures to remain near average.
As for Thursday and Friday, high pressure once again will be
dominant and an additional surge of cool and dry air from the north
will push into the region on a light north to northeast wind.
Temperatures will be below average both days.
One potential caveat to the long term forecast is the future
track of what is now Tropical Depression Nine. Although it is
most likely to stay well to our south locally, shifts in the
track are possible. The longer range forecast is of lower than
usual confidence since the system is expected to slow and stall
just off the coast. Visit hurricanes.gov for more information.
&&
.AVIATION /18Z SATURDAY THROUGH THURSDAY/...
Lower CIGs have been very slow to develop with residual low-
level dry air in place. Guidance such as the MAV/MET/GLAMP
remain emphatic that IFR will develop quickly heading into the
evening and remain most of the night. Current thinking is the
window may be more brief, especially further north, given (1)
residual dry air to start, and (2) additional dry air moving in
on light north flow later tonight. Amendments are likely to
better refine timing of these CIGs, as well as any lower VSBY in
isolated heavier downpours into this evening, or fog overnight.
Other than early morning low clouds/fog, VFR is then expected
Sunday through Monday night. More rain chances arrive for KCHO
by early on Tuesday, but flight restrictions appear unlikely at
this time. Winds will remain generally N to E and light.
VFR conditions Tuesday through Wednesday night. Winds north 5 to 10
knots Tuesday and Tuesday night. Winds northeast 10 knots Wednesday
and Wednesday night.
&&
.MARINE...
SCA conditions are possible across the southern waters late
tonight into Sunday morning and possibly again late Mon
night/early Tuesday in bouts of enhanced easterly flow. A few
thunderstorms could produce gusty winds or a waterspout as a
wave of low pressure crosses over the waters off southern
Maryland heading into this evening. Otherwise, rain winds down
after midnight with dry conditions then expected through Monday.
Winds north 5 to 10 knots Tuesday and Tuesday night. Winds
north to northeast 10 to 15 knots Wednesday and Wednesday night.
Some near SCA gusts are possible over the southern waters by the
middle of next week.
&&
.LWX WATCHES/WARNINGS/ADVISORIES...
DC...None.
MD...None.
VA...None.
WV...None.
MARINE...None.
&&
$$
SYNOPSIS...LFR/DHOF
NEAR TERM...LFR/DHOF
SHORT TERM...LFR/DHOF
LONG TERM...KLW
AVIATION...LFR/KLW/DHOF
MARINE...LFR/KLW/DHOF

NWS LWX Office Area Forecast Discussion