Area Forecast Discussion
Issued by NWS Sterling, VA

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FXUS61 KLWX 252106

Area Forecast Discussion
National Weather Service Baltimore MD/Washington DC
506 PM EDT Tue Oct 25 2016

High pressure will remain over the region through Wednesday night.
A cold front will cross the area Thursday afternoon and evening.
High pressure returns Friday and Friday night.


High pressure will continue to build toward the region late this
afternoon before settling overnight tonight. Breezy and cool
conditions will continue through this afternoon...despite plenty
of sunshine.

High pressure settling overhead tonight will provide a good setup
for radiational cooling. Leaned toward the colder side of guidance
for this reason. Min temps will range from the mid to upper 20s in
the Allegheny the lower and middle 30s across most
other the lower 40s in downtown Washington and
Baltimore. A Freeze Warning is in effect overnight for northern
Maryland...portions of northern Virginia...eastern West Virginia
and the Potomac Highlands of Virginia. A Frost Advisory is in
effect for the Washington and Baltimore Metropolitan areas into
portions of central Virginia. Extended the frost advisory a little
further south in eastern Virginia to Stafford and Spotsylvania
given how chilly it was last night and how it should likely be
slightly colder tonight. Otherwise, at this time do not expect any
additional expansions of the frost advisory.


High pressure will remain overhead for Wednesday...bringing more
dry and cool conditions. However...high and mid-level clouds will
increase well ahead of low pressure tracking through the Midwest.

The low will track into the eastern Great Lakes Wednesday night
while high pressure settles to our east. A return flow will setup
and with more clouds around...min temps should be milder compared
to Tuesday night.

The cold front associated with the low will pass through on
Thursday into Thursday evening...bringing some showers. Blustery
and chillier conditions are expected behind the front overnight.


High pressure will build over the region Friday into Saturday
before another wave of low pressure passes to the north during the
middle of the weekend. Similar to the Thursday system, most of the
forcing looks to stay north and moisture return is meager at best.
Not expecting much in the way of precipitation over the weekend
with this second system as a result, but breezy conditions and a
reinforcing shot of cool air can behind a secondary front

High pressure will return to the area early next week, but with the
center of the ridging building to the south that should result in
moderating temperatures.


Wind gusts around 20 to 25 knots will quickly diminish around
sunset. Light winds are expected tonight through Wednesday.
Southerly winds will develop Wednesday night and increase for
Thursday ahead of a cold front. A few showers are likely Thursday
into Thursday evening. MVFR cigs are possible as well during this
time. VFR conditions are expected behind the cold front late
Thursday night with gusty northwest winds.

Mainly VFR expected Friday-Saturday with northwesterly winds
10-15 knots.


Gusty winds this afternoon will gradually diminish tonight. High
pressure will build over the waters late tonight through Wednesday
before moving off the coast Wednesday night. Southerly winds will
increase ahead of a cold front Thursday. The cold front will pass
through Thursday evening and gusty northwest winds are expected
behind the front overnight Thursday. A Small Craft Advisory will
likely be needed for the waters Thursday through Thursday night. A
Gale Warning may be needed for portions of the waters late
Thursday and Thursday night.

Small Craft Advisory conditions may persist into the first
half of the weekend as a secondary frontal system crosses the area
in response to low pressure passing to the north.


DC...Frost Advisory from 3 AM to 9 AM EDT Wednesday for DCZ001.
MD...Freeze Warning from 3 AM to 9 AM EDT Wednesday for MDZ003>006-
     Frost Advisory from 3 AM to 9 AM EDT Wednesday for MDZ011-013-
VA...Freeze Warning from 3 AM to 9 AM EDT Wednesday for VAZ027>031-
     Frost Advisory from 3 AM to 9 AM EDT Wednesday for VAZ025-026-
WV...Freeze Warning from 3 AM to 9 AM EDT Wednesday for WVZ050>053-
MARINE...Small Craft Advisory until 3 AM EDT Wednesday for ANZ531>534-
     Small Craft Advisory until 6 PM EDT this evening for ANZ530-


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