Area Forecast Discussion
Issued by NWS Columbia, SC

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FXUS62 KCAE 231807
AFDCAE

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE COLUMBIA SC
207 PM EDT WED APR 23 2014

.SYNOPSIS...
A WEAK COLD FRONT IS MOVING THROUGH THE AREA THIS AFTERNOON. THIS
FRONT WILL BRING A DRIER AIRMASS TO THE MIDLANDS. HIGH PRESSURE
BEHIND THE FRONT WILL DOMINATE THE WEATHER FOR TONIGHT AND
THURSDAY BEFORE THE NEXT FRONT APPROACHES THE SOUTHEAST U.S.

&&

.NEAR TERM /THROUGH TONIGHT/...
WEAK COLD FRONT SAGGING ACROSS THE REGION THIS AFTERNOON INTO THIS
EVENING. ONLY DIFFERENCES ACROSS THE FRONT ARE LOWER DEWPOINTS AND
TEMPERATURES THAT ARE A TAD COOLER. THE DRIER AIRMASS WILL RESULT
IN VERY FEW CLOUDS TODAY. HIGH TEMPERATURES WILL BE A FEW DEGREES
COOLER TODAY THAN YESTERDAY. THERE WILL BE A PERIOD OF BREEZY
WINDS THIS AFTERNOON OUT OF THE NORTHWEST BEFORE WINDS DIMINISH
THIS EVENING. OVERNIGHT SKIES WILL REMAIN CLEAR...TEMPERATURES
WILL FALL INTO THE UPPER 40S FOR MOST LOCATIONS. THE THREAT OF FOG
WILL BE REDUCED IN THE DRIER AIRMASS.

&&

.SHORT TERM /THURSDAY THROUGH SATURDAY NIGHT/...
HIGH PRESSURE WILL BUILD OVER THE AREA THURSDAY MORNING THEN MOVE
OFFSHORE THURSDAY NIGHT. A COLD FRONT WILL APPROACH THE AREA FROM
THE WEST AND BE LOCATED JUST WEST OF THE APPALACHIAN MTNS BY 12Z
FRIDAY. NORTHWEST FLOW ALOFT WILL BECOME ZONAL THURSDAY AND A
TROUGH WILL MOVE TOWARD THE AREA THURSDAY NIGHT. IT WILL REMAIN
DRY BUT CLOUDS WILL INCREASE THURSDAY NIGHT AHEAD OF THE
APPROACHING FRONT. HIGHS IN THE MID 70S ON THURSDAY. LOWS WILL BE
IN THE UPPER 50S TO AROUND 60 THURSDAY NIGHT WITH INCREASING CLOUD
COVER AND MIXING INDUCED BY LIGHT SOUTHERLY WINDS. A WEAK COLD
FRONT MOVES OVER THE AREA FRIDAY. ALTHOUGH THE AIRMASS BECOMES
WEAKLY TO MODERATELY UNSTABLE FRIDAY AFTERNOON, LOW-LEVEL SHEAR IS
WEAK AND PWS ARE LESS THAN 1.50 INCHES. LOW CHANCE POPS LOOK
REASONABLE FOR FRIDAY. WEAK DRY HIGH PRESSURE WILL BUILD OVER THE
AREA SATURDAY. TEMPERATURES GENERALLY CLOSE TO OR JUST ABOVE
NORMAL.

&&

.LONG TERM /SUNDAY THROUGH WEDNESDAY/...
EXPECT SOME UNCERTAINTY DURING THE EXTENDED PERIOD AS A CUTOFF
UPPER LOW OVER THE CENTRAL PLAINS SLOWLY MOVES EASTWARD INTO THE
OH VALLEY BY WEDNESDAY. LOW-LEVEL MOISTURE WILL INCREASE ACROSS
THE REGION AS WELL AS CHANCES FOR SHOWERS AND POSSIBLE
THUNDERSTORMS SUNDAY NIGHT INTO THE MIDDLE OF THE WEEK.
TEMPERATURES GENERALLY CLOSE TO NORMAL BUT COOLER TEMPERATURES
EXPECTED BY MID-WEEK.

&&

.AVIATION /18Z WEDNESDAY THROUGH MONDAY/...
CLEAR SKIES OVER TAF LOCATIONS THIS AFTERNOON. EXPECT VFR CONDITIONS
TO CONTINUE THROUGH 24/10Z WHEN THERE IS A SLIGHT CHANCE OF
LOCALIZED FOG DEVELOPMENT AT KAGS...BUT THE DRIER AIRMASS WILL
MAKE WIDESPREAD FOG UNLIKELY. WINDS WILL INCREASE FROM THE NW AT
5 TO 15 KTS WITH A FEW GUSTS TO 20 KTS AS COLD FRONT PUSHES TO THE
COAST BY LATE AFTERNOON.

.EXTENDED AVIATION OUTLOOK...MOISTURE RETURN AHEAD OF AN APPROACHING
FRONT MAY PROVIDE CIG RESTRICTIONS AND POSSIBLE LIGHT SHOWER
ACTIVITY LATE THURSDAY NIGHT AND EARLY FRIDAY. THE FRONT WILL CROSS
THE REGION FRIDAY WITH THE POTENTIAL FOR SHOWERS/TSTMS AND
ASSOCIATED RESTRICTIONS.

&&

.HYDROLOGY...
FLOODING ALONG THE AREA RIVERS AND LAKES FROM THE HEAVY RAINFALL
SEVERAL DAYS AGO HAS ENDED.
&&

.CAE WATCHES/WARNINGS/ADVISORIES...
SC...NONE.
GA...NONE.
&&

$$






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