-- Discussion containing changed information from previous version are highlighted. --
817
FXUS61 KLWX 010747
AFDLWX

Area Forecast Discussion
National Weather Service Baltimore MD/Washington DC
347 AM EDT Wed May 1 2024

.SYNOPSIS...
-- Changed Discussion --
A cold front will move south of the area today. Weak
high pressure will build over the area tonight. A backdoor
cold front will move across the area Thursday night and settle
south of the area over the weekend.
-- End Changed Discussion --

&&

.NEAR TERM /THROUGH TONIGHT/...
-- Changed Discussion --
Patchy dense fog has developed over the Shenandoah valley. Will
continue to monitor for potential Dense Fog Advisory in the next
couple of hours.

Weak shortwave trough and associated cold front will move south
of the area today with dry air advection expected on light NW
winds. Mid-high level clouds will depart later this morning
leading to clear skies by mid to late morning. It will be cooler
and less humid today with temperatures in the mid 80s.
-- End Changed Discussion --

&&

.SHORT TERM /THURSDAY THROUGH FRIDAY NIGHT/...

-- Changed Discussion --
Upper ridging builds over the area Thursday through Saturday
supporting generally fair weather conditions. Temps jump back
at or above 90F Thu as wind turn southerly, but begin to cool
down Fri as backdoor front moves through the area. Temps drop
further over the weekend as strong wedge settles over the area.
Strengthening onshore flow late Fri night will result in a low
overcast with rain/drizzle Fri night into Saturday.
-- End Changed Discussion --

&&

.LONG TERM /SATURDAY THROUGH TUESDAY/...

-- Changed Discussion --
Surface low pressure and the associated cold fronts will move over
the forecast area this weekend, bringing increased chances for rain
showers and perhaps an isolated thunderstorm. Plenty of moisture
(PWATS 1.25-1.5") will make isolated instances of flooding possible
with the WPC having the western portion of the forecast area in a
marginal risk for excessive rainfall on Sunday morning. High
temperatures on Saturday will be in the 60s for most with overnight
lows in the 50s. On Sunday, high temperatures will be in the 60s to
mid 70s areawide with overnight low temperatures expected to be in
the 50s to low 60s.

Come Monday, the aforementioned area of low pressure will over the
Atlantic off the east coast while weak front dips down through the
forecast area. This front will lift north as a warm front throughout
the day on Tuesday with diurnally driven showers and thunderstorms
possible both days. The slight warming trend continues with high
temperatures in the 70s both days. Those near the metro areas may
get into the low 80s on Tuesday. Overnight low temperatures are
expected to be in the upper 50s to low 60s both nights.
-- End Changed Discussion --

&&

.AVIATION /08Z WEDNESDAY THROUGH SUNDAY/...

-- Changed Discussion --
Mid-high level clouds departing later this morning with P6SM SKC
developing by mid to late morning. Light NW winds today, then
becoming southerly Thu.

Multiple cold fronts will bring showers and perhaps an isolated
thunderstorm to the terminals both Saturday and Sunday. Sub-VFR
conditions are expected at times on both days. In additions to
reduced CIGs and VSBYs, southeasterly winds will gust up to 20 knots
on Saturday and 10-15 knots on Sunday.
-- End Changed Discussion --


&&

.MARINE...

-- Changed Discussion --
No hazards expected through Thu night. SCA conditions likely Fri
into the weekend.

Gusty southeasterly winds will gust between 15-25 knots on Saturday
as multiple cold fronts bring showers and isolated thunderstorms to
the waters. Small Craft Advisories are likely both Saturday and
Sunday. While winds diminish slightly on Sunday, gusts 15-20 knots
are possible in the afternoon.
-- End Changed Discussion --

&&

.LWX WATCHES/WARNINGS/ADVISORIES...
-- Changed Discussion --
DC...None.
MD...None.
VA...None.
WV...None.
MARINE...None.
-- End Changed Discussion --

&&

$$

SYNOPSIS...LFR
NEAR TERM...LFR
SHORT TERM...LFR
LONG TERM...AVS
AVIATION...AVS/LFR
MARINE...AVS/LFR