Pasadena, Maryland 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

877
FXUS61 KLWX 240620
AFDLWX

Area Forecast Discussion
National Weather Service Baltimore MD/Washington DC
220 AM EDT Sat May 24 2025

.SYNOPSIS...
High pressure will attempt to build in from the northwest today,
then a warm front approaches from the southwest Sunday. Below normal
temperatures continue through Memorial Day. Another system across
the southern United States may impact the area early next week.

&&

.NEAR TERM /THROUGH TONIGHT/...
Broad upper troughing that stretches from the Upper Plains to the
Northeast slowly shifts north today, with continued northwest flow
and cold advection over the Mid-Atlantic. The few brief showers
ongoing early this morning should dissipate by sunrise, then dry
conditions are expected through tonight. A mix of sun and clouds
today as some periods of thicker mountain stratocu are likely to at
some point in the late morning to afternoon.

Gusty winds this afternoon around 20-30 mph will quickly diminish
this evening. Below normal highs in the mid 60s to low 70s this
afternoon. Chilly once again tonight as lows drop to the 40 to
around 50F, with mid to upper 30s along the Allegheny Front. The
presence of at least light winds and some clouds prevent widespread
frost in the Alleghenies, there could be some sheltered elevated
valleys that decouple and allows frost to develop late tonight.

&&

.SHORT TERM /SUNDAY THROUGH MONDAY NIGHT/...
A weak, progressive surface high traverses the region on Sunday,
with dry conditions expected during the daytime. Come Sunday evening
into Sunday night a shortwave trough will pass just south of the
area as a warm front/frontal zone starts to lift north into our area
from southern VA. A period of isolated to scattered showers is
possible, especially along/south of US-50. At this time, not
expecting any heavy rainfall or thunderstorms, but something to keep
in mind for the holiday weekend. The shortwave quickly moves east of
the area by sunrise Monday with high building in from the north. Dry
conditions are forecast Memorial Day and for most of Monday night.

Still looking at below normal highs in the upper 60s to mid 70s
Sunday into Memorial Day. Nighttime lows start to moderate, though
still chilly in the 40s west of the Blue Ridge and low/mid 50s to
the east.

The next weather system to impact our area begins to approach from
the TN/OH Valleys late Monday night. A few showers are possible west
of the Blue Ridge very late Monday night, though some of the
guidance still has precipitation not arriving in our area until
after daybreak Tuesday.

&&

.LONG TERM /TUESDAY THROUGH FRIDAY/...
Attention will then turn to the northern/central CONUS, where a
potent upper-low will be ejecting out of this region towards the
Great Lakes Tuesday into Wednesday. Canadian high pressure remains
to our north during this timeframe. Meanwhile a potent surface low
looks to develop as a piece of shortwave energy traverses the region
on the periphery of the primary upper low. This will lead to
continued cooler than average temperatures and daily shower and
thunderstorm chances Tuesday into Wednesday. High temperatures
Tuesday and Wednesday will be in the 60s for most with only those
east of I-95 staying in the low 70s. There looks to be a period of
heavier rainfall Tuesday night and into Wednesday as the warm front
associated with the low pressure system remains nearby.

Precipitation chances begin decreasing Wednesday afternoon and into
Thursday as the low pressure system is forecast to depart the area.
However, the primary upper low will still be to our west at this
point it seems, so the timeframe through the end of the week could
remain unsettled. Have maintained some slight chance to chance POPs
in the forecast at this time. Thinking most of the period could be
dry, but could be daily shower/storm chances. Additionally, some
guidance tries to develop yet another surface low along a slow-
moving/stalled frontal boundary associated with the previous system.
This will all have to be monitored closely. No day looks
particularly concerning from a hazardous weather standpoint at this
time, but cumulatively, there could be a flooding concern if this
pattern trends towards the wettest guidance.

&&

.AVIATION /06Z SATURDAY THROUGH WEDNESDAY/...
VFR conditions will prevail this weekend through Memorial Day.
Northwest winds gust around 20-25 knots this afternoon, then remain
at or below 10 knots Sunday and Monday. Cloud cover builds in Sunday
evening into Monday, though it is expected to be VFR at this time.

Precipitation chances increase on Tuesday with sub-VFR conditions
expected during showers and thunderstorms. Winds at MRB gust up to
15 knots Tuesday afternoon with light winds expected elsewhere.

Steady rain arrives late Tuesday into Tuesday night and Wednesday.
This will likely result in MVFR to IFR conditions area-wide at times
due to a combination of VSBY/CIG restrictions.

Rain should depart during the second half of Wednesday, with VFR
conditions returning.

&&

.MARINE...
Small Craft Advisories are in effect from late morning through this
evening for all the waters as one final surge of northwest winds
brings gusts around 20-25 knots to all the waters. A few hours of
gusts near 30 knots are possible in the upper Chesapeake Bay.

Winds quickly diminish tonight and remain below SCA levels through
Memorial Day.

Generally expecting Sub-SCA winds on Tuesday as an area of high
pressure over the region pushes off towards the northeast. However,
onshore flow will begin to increase throughout the afternoon. Should
the wind take on a bit more of a southerly component, can`t
completely rule out some channeling in the lower Chesapeake
Bay/Tidal Potomac. Thunderstorms are possible on Tuesday afternoon,
which could bring down some gustier winds as well.

Steady rain arrives Tuesday night into Wednesday as a surface low
traverses the region. SCA conditions are possible on Wednesday,
depending on where the low tracks.

&&

.TIDES/COASTAL FLOODING...
Tide levels are expected to remain slightly elevated at times
through the holiday weekend, even with steady offshore winds.
Sensitive locations likely reach Action Stage during overnight to
early morning high tide cycle each day. Winds are forecast to
slacken Sunday into Monday and that could result in some slight
water level rise, but still forecast to remain below flood stage.

&&

.LWX WATCHES/WARNINGS/ADVISORIES...
DC...None.
MD...None.
VA...None.
WV...None.
MARINE...Small Craft Advisory from 8 AM this morning to 9 PM EDT this
     evening for ANZ530>533-535-536-538>542.
     Small Craft Advisory until 9 PM EDT this evening for ANZ534-
     537-543.

&&

$$

SYNOPSIS...KRR
NEAR TERM...KRR
SHORT TERM...KRR
LONG TERM...CJL
AVIATION...KRR/CJL
MARINE...KRR/CJL
TIDES/COASTAL FLOODING...KRR