Bowie, Maryland Weather Forecast Discussion

857
FXUS61 KLWX 301400
AFDLWX
Area Forecast Discussion
National Weather Service Baltimore MD/Washington DC
1000 AM EDT Tue Sep 30 2025
.SYNOPSIS...
High pressure builds south from eastern Canada through much of the
week. A strong cold front will track across the area tonight
bringing cooler and drier weather for the middle and latter part
of this week.
&&
.NEAR TERM /THROUGH TONIGHT/...
Updated POPs and sky cover grids to reflect latest thinking.
Overall rain has been very light, though any rain at this point
is beneficial given drought. Some locales may squeak out a
tenth or two across central VA in the steadier light rains.
Previous discussion follows..
Very light rain has made it as far north as I-70 this morning,
but will continue getting pushed southward through midday as
low-level drier air, particularly at 850 mb, advects in on
strengthening NNE winds. By 18Z today, most of the rain should
be out, except perhaps across central VA along and south of I-64
where the rain will linger the longest. Otherwise, a thick mid-
high level overcast will persist today with gradual thinning
this evening, then clearing overnight. A strong cold front will
then cross the area tonight bringing a cooler air mass for the
middle and latter part of the week.
&&
.SHORT TERM /WEDNESDAY THROUGH THURSDAY NIGHT/...
Building high pressure from Quebec will be the main story for
the middle and second half of the week supporting clear skies
Wed and Wed night. NNE to NE winds will start shifting more to
the E Thu as high pressure over the Northeast slides offshore.
Models show more cloud cover Thu with a stratocu deck developing as
onshore winds develop. Temps will cool down Wed and Thu with
highs around 70 and falling into the 40s west of I-95. Some
patchy frost can`t be ruled out in the most sheltered valleys
west of the Blue Ridge.
&&
.LONG TERM /FRIDAY THROUGH MONDAY/...
Strong surface high pressure will remain along the eastern seaboard
through the weekend, perhaps drifting slowly eastward early next
week. Initially rather flat ridging aloft will expand eastward and
amplify by early next week as a series of troughs move through
the western part of the continent. Dry conditions should
prevail, although there are some hints some moisture could start
wrapping around the ridge from the south by Monday. Below
normal temperatures on Friday will moderate back above normal
over the course of the weekend.
&&
.AVIATION /14Z TUESDAY THROUGH SATURDAY/...
Light rain bringing MVFR conditions to CHO and surrounding
areas. Should last through midday. Previous discussion
follows...
Mid- high level overcast today will gradually thin
out this evening with clearing expected overnight. Onshore winds
Thu may result in a stratocumulus deck. NNE winds will
strengthen tonight into Wed with gusts up to 20 kt possible.
Winds begin to diminish later Wednesday.
No significant weather is expected Friday and Saturday as strong
high pressure remains overhead.
&&
.MARINE...
N to NNE winds will strengthen today into Wednesday with SCA
conditions expected. Winds will begin to gradually diminish
later Wednesday, but SCA conditions may persist into Thu
evening.
Winds will become southerly Friday, but should remain below advisory
criteria into Saturday as high pressure remains centered nearby.
&&
.TIDES/COASTAL FLOODING...
North to northeast winds are forecast to strengthen today into
Wednesday as strong high pressure builds in from the north. This
is going to keep tidal anomalies in check.
The threat for widespread minor coastal flooding, and possible
moderate coastal flooding at Annapolis could occur during the late
part of the week. Have issued a Coastal Flood Watch to account
for this during the Wednesday night high tide. This will be due
to a snapback tide when the strong northeast winds start to
diminish Wednesday night, then turn east to southeast Thursday
afternoon into Friday.
&&
.LWX WATCHES/WARNINGS/ADVISORIES...
DC...None.
MD...Small Craft Advisory from 8 PM this evening to 6 PM EDT
     Wednesday for MDZ008.
     Coastal Flood Watch from Wednesday evening through Thursday
     morning for MDZ014.
VA...None.
WV...None.
MARINE...Small Craft Advisory from 8 PM this evening to 6 PM EDT
     Wednesday for ANZ530>533-538>542.
     Small Craft Advisory from 4 PM this afternoon to midnight EDT
     Wednesday night for ANZ534-537-543.
     Small Craft Advisory from 4 AM to 6 PM EDT Wednesday for
     ANZ535-536.
&&
$$
SYNOPSIS...LFR
NEAR TERM...LFR/CPB
SHORT TERM...LFR/CPB
LONG TERM...ADS
AVIATION...ADS/LFR/CPB
MARINE...ADS/LFR/CPB
TIDES/COASTAL FLOODING...LWX

NWS LWX Office Area Forecast Discussion