Area Forecast Discussion
Issued by NWS Sterling, VA

Current Version | Previous Version | Text Only | Print | Product List | Glossary Off
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33

000
FXUS61 KLWX 180045
AFDLWX

Area Forecast Discussion
National Weather Service Baltimore MD/Washington DC
845 PM EDT Mon Apr 17 2017

.SYNOPSIS...
High pressure will build over the area tonight through early
Wednesday. The next cold front will cross the area Thursday
night. High pressure builds over New England for the weekend.

&&

.NEAR TERM /THROUGH TUESDAY/...
A cold front has moved through the Mid-Atlantic region. Light
northerly winds will continue tonight and temperatures will drop
into the 40s/L50s by Tuesday morning. High pressure will move
into the region from the north Tuesday before moving to the east
by Tuesday evening. Winds will be easterly Tuesday which will
cause cooler temperatures even under mostly sunny skies.

&&

.SHORT TERM /TUESDAY NIGHT THROUGH THURSDAY NIGHT/...
High pressure begins to shift offshore Wed with return flow
setting up on the backside with isold/sct light showers late Tue
night across southwest areas and spreading northeast on Wed.
Even if it doesn`t rain there should be plenty of clouds.
Potential for low clouds/fog Wed night as mid-levels dry out.
Then, showers and t-storms possible Thu afternoon and evening as
low pressure tracks across PA. Actual cdfnt will likely cross
later on the day Fri.

&&

.LONG TERM /FRIDAY THROUGH MONDAY/...
Low pressure moves east from the Great Lakes on Thursday with a
front to our north, placing us over the warm sector and ahead
of a cold front. High temperatures will be in the upper 70s and
80s with scattered showers and thunderstorms possible.

Low pressure continues to move east and pushes cold front towards
the Mid-Atlantic keeping the chance of showers Thursday night into
Friday. The front moves across on Friday and conditions should be
drying behind it as a high pressure builds over our area. High
temperatures will be in the 60s and 70s, and lows will reach the 40s.

Drier conditions continue into Saturday and Saturday night with
cooler high temperatures... in the 50s and 60s and low temperatures
overnight in the 40s.

Sunday starts out dry but a low pressure will move east into the Mid-
Atlantic increasing the chance for showers over our area. High
temperatures will be in the 50s and 60s and Sunday. The low moves
offshore Sunday night, and PoPs decrease into Monday. High
temperatures for Monday will be in the 60s and low 70s.

&&

.AVIATION /01Z TUESDAY THROUGH SATURDAY/...
VFR conditions expected tonight through Tuesday as high pressure
moves into the region. Clouds increase Tue night and Wed but
cigs should remain VFR. Better chance for MVFR/IFR cigs Wed
night.

Scattered showers and thunderstorms possible Thursday with
boundary to our north. Showers continue into Friday as front
pushes through our area with wind gusts reaching up to 20 kt.
Dry conditions expected on Saturday. Sub-VFR conditions possible
at time, mainly Thursday and Friday.

&&

.MARINE...
Light winds around 5 knots will continue on the waters tonight.
Winds will become northeasterly Tuesday morning before veering
to the SE by afternoon. High pressure will move off the east
coast Tuesday evening and winds will increase. Winds may come
close to SCA criteria during this time.

Scattered showers and thunderstorms possible Thursday with
boundary to our north. Showers continue into Friday as front
pushes through our area. Dry conditions expected on Saturday.
Small craft advisory may be needed for Friday into Friday night
with wind gusts reaching near 20 kt.

&&

.LWX WATCHES/WARNINGS/ADVISORIES...
DC...None.
MD...None.
VA...None.
WV...None.
MARINE...None.

&&

$$
SYNOPSIS...LFR
NEAR TERM...HSK/LFR
SHORT TERM...LFR
LONG TERM...IMR
AVIATION...HSK/IMR/LFR
MARINE...HSK/IMR/LFR



USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.