Area Forecast Discussion
Issued by NWS Columbia, SC

Home | Current Version | Previous Version | Text Only | Print | Product List | Glossary On
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 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50
000
FXUS62 KCAE 272332
AFDCAE

Area Forecast Discussion
National Weather Service Columbia SC
732 PM EDT Tue Jun 27 2017

.SYNOPSIS...
A front lingering near the coast will shift farther offshore
tonight. A pressure ridge extending through the Ohio River
Valley today will be in the Mid-Atlantic Region Wednesday and
off the East Coast Thursday. Diminished relative humidity
will be associated with this pattern through Wednesday but
moisture will be on the increase late in the week as the
offshore ridge directs an onshore flow into the forecast area.
This trend will lead to increasing chances of thunderstorms.

&&

.NEAR TERM /UNTIL 6 AM WEDNESDAY MORNING/...
Drier and cooler air will filter into the region tonight in the
wake of the passing shortwave with clearing skies
expected...even in the east Midlands where high clouds
continue. Overnight temperatures expected to be seasonably cool
in the lower to mid 60s with some possible upper 50s in
outlying sheltered areas of the northern Midlands.

&&

.SHORT TERM /6 AM WEDNESDAY MORNING THROUGH FRIDAY/...
Surface high pressure over the Mid Atlantic States will provide
central South Carolina and east central Georgia will one more
day of low humidity on Wednesday.

This surface high moves offshore Thursday into Friday, which
allows moisture to flow into the region from the eastern Gulf of
Mexico. Showers and thunderstorms are forecast to develop as
soon as Thursday afternoon in the western half of the region
and throughout central South Carolina by Friday.

&&

.LONG TERM /FRIDAY NIGHT THROUGH TUESDAY/...
A cold front is forecast to stall and partially dissipate from
Tennessee to North Carolina this weekend. A series of
disturbances moving along the southern of edge of the polar jet
stream will interact with this boundary and generate scattered
showers and thunderstorms across the region each day. It`s too
far out in time to pinpoint more versus less active days.
Temperatures will be near or slightly above normal for early
July.

&&

.AVIATION /23Z TUESDAY THROUGH SUNDAY/...
VFR conditions expected for most of the TAF sites for most of the 24
hour TAF period, as dry air works into the region.  Leading edge of
dewpoint gradient stretching near or just north of OGB/AGS, as
surface trough slow to move south, and some sea breeze penetration
inland noted this evening. Veil of upper level cloudiness expected
to preclude fog in the near term. However, light winds combined with
some expected clearing later tonight could promote MVFR VSBYs at fog
prone OGB and AGS where dewpoints/low level moisture may remain
just high enough to support it. VFR Wednesday.

EXTENDED AVIATION OUTLOOK...No significant impacts to aviation
expected through Wednesday. A return flow and increasing low-level
moisture may provide a late night/early morning stratus threat
Thu/Fri. Scattered thunderstorms expected Fri/Sat.

&&

.CAE WATCHES/WARNINGS/ADVISORIES...
GA...None.
SC...None.

&&

$$
SYNOPSIS...99
NEAR TERM...99
SHORT TERM...99
LONG TERM...99
AVIATION...99



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