Area Forecast Discussion
Issued by NWS Wakefield, VA

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FXUS61 KAKQ 291112
AFDAKQ

Area Forecast Discussion
National Weather Service Wakefield VA
712 AM EDT FRI JUL 29 2016

.SYNOPSIS...
High pressure will remain off the Southeast coast today as a weak
frontal boundary lingers to the north of the area. This boundary
slides south this weekend and washes out over the area, before the
next cold front drops into the region early next week.

&&

.NEAR TERM /UNTIL 6 PM THIS EVENING/...
Latest surface analysis shows a trough of low pressure across the
fa with a stalled frontal boundary across pa/nj. This frnt will
stay n of the local area today, with a weak thermal trough
remaining over the immediate area. Chance of rain will be lower
than previous days (only 20%) as shortwave energy is pushing ne of
the area already this morng, and little in the way of upr-level
support will remain. Also of note is this will be the first day in
six days without the need for a heat advisory. Hi temps in the upr
80s to lwr 90s and dewpts in the lo/mid 70s will yield heat
indices in the 100-104 range over extreme se va/ne nc and 90-100
elsewhere.

&&

.SHORT TERM /6 PM THIS EVENING THROUGH SUNDAY/...
Any ongoing convection will diminish this eveng/overnight
following the loss of daytime heating. Temps will bottom out in
the lo/mid 70s under a prtly/mstly cloudy sky.

For this weekend...the aforementioned boundary drops towards the
area and weakens. With a weak thermal trough in the vicinity and
upr-level trough over the eastern CONUS, there will be a good
chance (40-50%) of shras/tstms both days, with the precip again
being generally diurnally driven. Expect high temps in the upr 80s
to lwr 90s with low temps ranging through the 70s.

&&

.LONG TERM /SUNDAY NIGHT THROUGH THURSDAY/...
A cold front finally begins to advance on the Mid Atlantic
Sunday night and is expected to cross the area during
Monday...stalling near the Carolinas into mid week. This
will keep a chance for thunderstorms in the forecast mainly
west of Ches Bay in Ern/Cntrl VA and NE NC Sun night
through Tue night. Meanwhile, sfc high pressure settles
over New England which will result in more seasonal temps
in the upper 80s and cooler dewpoints in the upper 60s to
lower 70s...effectively lowering heat indices into the
lower 90s in the extended forecast periods. In addition,
onshore winds develop by Tue morning and are expected to
persist through the rest of the week...thus having a
drying effect on the overall weather and reducing precip
chances below any mention.

&&

.AVIATION /11Z FRIDAY THROUGH TUESDAY/...
Pcpn has moved away this morning, with some lingering ifr stratus
at RIC. This should begin to lift to mvfr after 13z. Additionally,
SBY could have some mfvr cigs through the morning hours. Chances
for aftn/eveng shras/tstms (20%) are too low to warrant mention in
the tafs at this point. Elsewhere only expect vfr. Winds remain
under 10 kt thru the taf period.

OUTLOOK...There will be a better chance (40-50%) of shras/tstms
both days this weekend with a weak frontal boundary in the
vicinity. Periods of mvfr/ifr conditions are possible in any
tstms.

&&

.MARINE...
Sub-sca conditions are expected to prevail across the marine area
through the weekend into early next week. A weak cold front will
push through the region this morning producing a wind shift to nw
with speeds generally 10-15kt. The front drops south of the area
tonight resulting in an e wind of 5-10kt. The front lifts back to
the north Saturday into Saturday night with the wind becoming se 10-
15kt. The front settles over the region Sunday into Monday and
pushes off the coast Monday night into Tuesday. Seas average 2-3ft
through the period with 1-2ft waves in the Bay.

&&

.AKQ WATCHES/WARNINGS/ADVISORIES...
MD...None.
NC...None.
VA...None.
MARINE...None.

&&

$$
SYNOPSIS...MAS
NEAR TERM...MAS
SHORT TERM...JDM/MAS
LONG TERM...BMD
AVIATION...AJZ/MAS
MARINE...AJZ


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