Area Forecast Discussion
Issued by NWS Sterling, VA

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FXUS61 KLWX 150014

Area Forecast Discussion
National Weather Service Baltimore MD/Washington DC
814 PM EDT Fri Jul 14 2017

A cold front has moved through the area. Weak high pressure
will influence the weather over the weekend, before another cold
front moves in from the north and stalls over the area next



Severe thunderstorm watch has been dropped as storms have moved
onto eastern shore.


No changes made to the forecast this weekend at this time. It
looks like the front will push far enough south on Saturday that
the forecast area should be dry. While it will be cooler,
temperatures will still remain near normal for this time of
year, in the mid 80s to around 90. Low pressure developing along
the front may nudge it back toward southern MD Saturday night,
though have kept the forecast dry for now.

Winds should back to the south again on Sunday as a shortwave
trough aloft swings into the Great Lakes. It looks like the
prior front and its deep moisture remain to the south, so
potential for convection looks limited. If there is a chance, it
would be over the mountains (closer to trough) and southern MD
(should front try to pivot north due to the prior low pressure).
Temperatures should rebound a few degrees over Saturday.


A persistent upper level trough of low pressure will be accompanied
by a couple of disturbances from the west Monday through Wednesday
to enhance the threat of showers and thunderstorms each period. High
temperatures will be in the upper 80s to lower 90s.

Weak high pressure will build in Wednesday night and Thursday. Drier
air but warm temperatures will evolve.

The next storm system will enter the region from the west Thursday
night and Friday. There is a chance for showers and thunderstorms
with this system and its associated cold front. High temperatures
will be in the lower 90s.


Conditions improving behind the thunderstorm line.

No significant aviation impacts are expected Saturday and
Sunday with weak high pressure behind the cold front. Local IFR
conditions possible Monday through Tuesday night with showers
and thunderstorms in the region.



Northwest flow will overspread the waters behind the cold front.
Gusts still forecast fall just short of SCA criteria. Have
removed that threat from the marine forecast. Winds eventually
become southerly again by late Sunday as the weak high pressure
moves offshore. No marine hazards expected through Tuesday




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