Area Forecast Discussion
Issued by NWS Sterling, VA

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FXUS61 KLWX 212141
AFDLWX

Area Forecast Discussion
National Weather Service Baltimore MD/Washington DC
541 PM EDT Sun Aug 21 2016

.SYNOPSIS...
A cold front will continue to move east across the area into this
evening. High pressure then builds over the area into Tuesday
before persisting offshore through the rest of the week.

&&

.NEAR TERM /TONIGHT/...

Cold front now over lower southern MD is moving onto the Eastern
Shore. NWly flow behind the front will gust around 20 mph overnight.
Min temps low to mid 60s.

&&

.SHORT TERM /MONDAY MORNING THROUGH TUESDAY NIGHT/...

1027mb surface high pressure shifts overhead through Monday night.
Cool and dry high pressure with max temps Monday and Tuesday low
80s with min temps Monday and Tuesday night generally low 60s,
slightly less Monday night in the calm under the high pressure
center.

Light onshore flow Tuesday becomes southerly Tuesday night as the
high sets up along the northern Mid-Atlantic coast.

&&

.LONG TERM /WEDNESDAY THROUGH SUNDAY/...
High pressure will move offshore during the middle of the week
leading to a warming trend in temperatures and increasing humidity.
A strong middle to upper level ridge will build over the interior
southeastern United States late in the week and persist into the
weekend. Meanwhile, a cold front will drop into the area from the
northwest on Friday then stall and weaken near or just south of the
area. This will lead to an increased chance for showers and
thunderstorms.

&&

.AVIATION /22Z SUNDAY THROUGH FRIDAY/...
Gusty showers and thunderstorm across DC metros shift east through
the rest of the afternoon. Cold front crosses from the west
through the early evening. NWly flow gusts 20 kt overnight. VFR as
high pressure builds through Monday night and persists offshore
through the middle of next week.

VFR continues Wednesday into Thursday with southeasterly winds at
or below 10 knots.

&&

.MARINE...
Special marine warnings across the lower Potomac/MD section of the
Ches Bay ahead of a cold front. Small craft advisory for 20 kt
southerly gusts ahead of the front and then for NWly 25 kt gusts
tonight behind the cold front. Winds ease through Monday morning
with high pressure building overhead Tuesday morning for a dry and
tranquil period which continues into the midweek.

Southeasterly flow around high pressure departing to the east of
the waters may result in gusts close to Small Craft Advisory
levels Wednesday into Thursday.

&&

.LWX WATCHES/WARNINGS/ADVISORIES...
DC...None.
MD...Coastal Flood Advisory until 11 PM EDT this evening for MDZ014.
     Coastal Flood Advisory until 8 PM EDT this evening for MDZ017.
VA...None.
WV...None.
MARINE...Small Craft Advisory until noon EDT Monday for ANZ530>534-
     537>543.
     Small Craft Advisory until 10 AM EDT Monday for ANZ535-536.

&&

$$
UPDATE...WOODY!
PREVIOUS...BAJ/HTS/DFH



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