Area Forecast Discussion
Issued by NWS Columbia, SC

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000
FXUS62 KCAE 232110
AFDCAE

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

.SYNOPSIS...
HIGH PRESSURE WILL DOMINATE THE WEATHER FOR TONIGHT AND THURSDAY
BEFORE THE NEXT FRONT APPROACHES THE SOUTHEAST U.S.

&&

.NEAR TERM /UNTIL 6 AM THURSDAY MORNING/...
A WEAK COLD FRONT MOVING THROUGH THE AREA HAS MADE ITS WAY EAST OF
THE NORTHERN COUNTIES LEAVING MUCH LOWER DEW POINT TEMPERATURES IN
ITS WAKE. THE FRONT REMAINS STRETCHED FROM NORTHEAST ALONG THE
COAST TO SOUTHWEST INTO THE EASTERN MIDLANDS. THE FRONT WILL
CONTINUE TO PUSH EASTWARD THIS EVENING. HIGH PRESSURE CENTERED
OVER THE GREAT LAKES WILL RIDGE INTO THE FORECAST AREA TONIGHT.
OVERNIGHT SKIES WILL REMAIN CLEAR...TEMPERATURES WILL FALL INTO
THE MID 40S NORTH TO LOWER 50S SOUTH. THE THREAT OF FOG WILL BE
REDUCED IN THE DRIER AIRMASS.

&&

.SHORT TERM /6 AM THURSDAY MORNING THROUGH FRIDAY 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 /SATURDAY 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 /21Z WEDNESDAY THROUGH MONDAY/...
CLEAR SKIES THROUGH THE OVERNIGHT HOURS. 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. NORTHWEST WINDS AT 5 TO 15 KTS THIS AFTERNOON WILL
DIMINISH WITH SUNSET THEN SHIFT NORTHEAST LESS THAN 10 KNOTS FOR
TONIGHT.

.EXTENDED AVIATION OUTLOOK...MOISTURE RETURN AHEAD OF AN APPROACHING
FRONT MAY PROVIDE CIG RESTRICTIONS AND POSSIBLE LIGHT SHOWER
ACTIVITY LATE THURSDAY NIGHT INTO FRIDAY MORNING. THE FRONT WILL
CROSS THE REGION FRIDAY WITH THE POTENTIAL FOR SHOWERS/TSTMS AND
ASSOCIATED RESTRICTIONS. RESTRICTIONS ARE AGAIN POSSIBLE MONDAY
AHEAD OF A LOW PRESSURE SYSTEM.

&&

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

$$







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