413
FXUS61 KLWX 190000
AFDLWX

Area Forecast Discussion
National Weather Service Baltimore MD/Washington DC
800 PM EDT Fri Apr 18 2025

.SYNOPSIS...
A warm front lifts through the area tonight bringing milder
conditions. High pressure to the south dominates the weather
pattern for Saturday with much warmer temperatures. A cold front
passes through Sunday morning, then high pressure builds in
from the north. Another front moves through on Tuesday.

&&

.NEAR TERM /UNTIL 6 AM SATURDAY MORNING/...
Winds decrease after sunset, though breezy conditions continue
through the night (gusts around 15-25 mph). The breezes coupled
with increasing high clouds and an approaching warm front will
keep conditions mild tonight with lows mainly in the 60s.

&&

.SHORT TERM /6 AM SATURDAY MORNING THROUGH SUNDAY NIGHT/...
A sharpening mid-level ridge over the Southeast U.S. nudges its
way toward the Mid-Atlantic on Saturday. This is going to
produce the warmest day of the year so far, with highs reaching
the mid to upper 80s. A cold front approaches from the OH
Valley, though the ridge is likely to keep this system well
north/west of our area. Isolated to scattered showers reach the
Alleghenies Saturday night, otherwise we remain dry east of the
mountains. Still mild Saturday night with lows in the upper 50s
to mid 60s.

The front moves into the area Saturday night into Sunday. The
main impact from this is expected to be less warmer temperatures
and cloudy skies for Eastern Sunday. Highs are forecast to be in
the 70s, though a few spots in Central VA could reach 80F and those
in Northeast MD struggling to reach 70F. Easterly flow returns
Sunday night with lows in the 50s.

&&

.LONG TERM /MONDAY THROUGH FRIDAY/...
A surface low pressure system will track NE across the Great Lakes
on Monday with the associated cold front pushing through the
forecast area Monday night. As the cold front moves through the
area, precipitation chances increase with rain showers possible. The
more favorable conditions for convection will remain to our west,
although isolated thunderstorms are possible.

In the wake of the frontal passage, high pressure builds over the
Mid-Atlantic through midweek. Conditions dry out Tuesday as cloud
cover decreases. As high pressure shifts offshore, southerly flow
ushers in moist air aloft with cloud cover expected to increase.
Additionally, a cold front approaches from the northwest with low
end PoPs forecast throughout the day on Thursday.

High temperatures will be in the 70s to low 80s each day with
overnight low temperatures in the 50s (40s in the mtns) for most.

&&

.AVIATION /00Z SATURDAY THROUGH WEDNESDAY/...
VFR conditions are expected through the weekend. Southerly
wind gusts around 20 knots are expected tonight, then increase
again to 20-25 knots Saturday afternoon. Winds diminish Saturday
night into Sunday. Periods of LLWS are possible overnight and
again Saturday evening as a pair of LLJs pass by.

VFR conditions are expected across all terminals Monday and Tuesday.
As precipitation chances increase overnight Monday into Tuesday, sub-
VFR conditions are possible. Southerly winds on Monday shift to
westerly on Tuesday.

&&

.MARINE...
A prolonged period of Small Craft Advisory conditions will
continue through Saturday night. South winds diminish slightly
with gusts of 20-25 knots tonight, and will be around 20 knots
through Saturday evening. Winds slowly shift from south to
southwest through Saturday. Winds diminish Saturday night as a
cold front moves south into the area, causing winds to become
northerly, then easterly by Sunday evening.

SCA criteria winds are possible on Monday with southerly flow. Winds
diminish on Tuesday, with sub-SCA criteria winds expected.

&&

.LWX WATCHES/WARNINGS/ADVISORIES...
DC...None.
MD...None.
VA...None.
WV...None.
MARINE...Small Craft Advisory until midnight EDT Saturday night for
     ANZ530>543.

&&

$$

SYNOPSIS...DHOF/KRR
NEAR TERM...DHOF/KRR
SHORT TERM...KRR
LONG TERM...AVS
AVIATION...AVS/DHOF/KRR
MARINE...AVS/DHOF/KRR