Area Forecast Discussion
Issued by NWS Columbia, SC

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FXUS62 KCAE 272345
AFDCAE

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE COLUMBIA SC
745 PM EDT MON APR 27 2015

.SYNOPSIS...
HIGH PRESSURE CONTINUES BUILDING INTO THE REGION AND WILL LINGER
THROUGH TUESDAY. LOW PRESSURE WILL RIDE ALONG THE GULF COAST AND
UP THE ATLANTIC COAST LATE TUESDAY THROUGH THURSDAY...SPREADING
MOISTURE INTO OUR REGION. DRY HIGH PRESSURE WILL RETURN FOR FRIDAY
THROUGH MONDAY.

&&

.NEAR TERM /UNTIL 6 AM TUESDAY MORNING/...
HIGH LEVEL DEBRIS CLOUDS FROM STORMS CROSSING THE GULF COAST
STATES WILL LINGER CROSS THE AREA TONIGHT. SCATTERED CUMULUS
CLOUDS ARE EXPECTED TO DISSIPATE WITH LOSS OF AFTERNOON HEATING.
SURFACE HIGH PRESSURE WILL RIDGE IN FROM THE NORTHWEST OVERNIGHT.
COOL AIRMASS WILL RESIDE ACROSS THE AREA OVERNIGHT. NORTHWEST
WINDS WILL GRADUALLY SHIFT NORTH-NORTHEAST LATE TONIGHT. SHOULD
SEE OVERNIGHT LOWS RANGE THROUGH THE 40S WITH SOME LOWER 50S
ACROSS THE CSRA.

&&

.SHORT TERM /6 AM TUESDAY MORNING THROUGH WEDNESDAY NIGHT/...
HIGH PRESSURE WILL BE IN CONTROL OF THE REGION INTO TUESDAY
AFTERNOON AS LOW PRESSURE DEVELOPS ALONG THE GULF COAST AND THE
UPPER LOW DIGS TOWARD THE WESTERN GULF COAST. THIS WILL PUSH
MOISTURE AND CLOUDINESS NORTHWARD INTO THE FORECAST AREA WITH
CLOUDINESS...ESPECIALLY IN THE CSRA...INCREASING THROUGH THE
AFTERNOON. EXPECT A SLIGHT CHANCE OF RAIN TO MOVE INTO THE CSRA
DURING THE LATE AFTERNOON AND SPREAD INTO THE CENTRAL MIDLANDS
TUESDAY EVENING. TUESDAY NIGHT ADDITIONAL MOISTURE WILL MOVE
NORTHWARD AS THE LOW REACHES THE FL PANHANDLE RESULTING IN SHOWERS
BECOMING LIKELY ACROSS THE ENTIRE AREA BY DAYBREAK WEDNESDAY.
WEDNESDAY AND WEDNESDAY NIGHT THE LOW WILL CROSS FL AND TRACK
ALONG THE SC COAST NEARING THE OUTER BANKS BY WEDNESDAY MORNING.
THIS WILL PRODUCE CLOUDY SKIES AND RAIN ACROSS THE AREA FOR
WEDNESDAY INTO WEDNESDAY NIGHT WITH RAIN CHANCES LOWERING TOWARD
SUNRISE THURSDAY. TEMPERATURES HAVE BEEN LOWERED SLIGHTLY WITH
AROUND 70 FOR A HIGH ON TUESDAY AND LOWER 60S WEDNESDAY...WITH
OVERNIGHT LOWS IN THE UPPER 40S TO LOWER 50S.

&&

.LONG TERM /THURSDAY THROUGH MONDAY/...
MODELS ARE IN GOOD AGREEMENT THROUGH THE LONG TERM WITH THE UPPER
LOW CROSSING THE REGION THURSDAY NIGHT AND HIGH PRESSURE BUILDING
BACK INTO THE REGION FRIDAY NIGHT THROUGH THE WEEKEND. HAVE MADE
ONLY MINOR ADJUSTMENTS TO THE LONG TERM AS MODELS ARE IN AGREEMENT
WITH THE MOST SIGNIFICANT CHANGE BEING TO ADD ISOLATED THUNDER ON
THURSDAY AS COLD AIR ALOFT WITH THE UPPER LOW CROSSES THE AREA.
ALTHOUGH CHANCE FOR THUNDER CURRENTLY APPEARS LOW WITH HEATING
POSSIBLE IN SOME AREAS AND LINGERING MOISTURE THERE IS SOME
POTENTIAL. TEMPERATURES THROUGH THE LONG TERM WILL BE BELOW NORMAL
ON THURSDAY WARMING TO NEAR NORMAL SUNDAY AND MONDAY.

&&

.AVIATION /00Z TUESDAY THROUGH SATURDAY/...
VFR CONDITIONS EXPECTED THROUGH THE END OF THE FORECAST PERIOD.

COOL AND DRY HIGH PRESSURE WILL DOMINATE THE REGION OVERNIGHT.
NORTHWESTERLY WINDS AROUND 5 MPH WILL SHIFT TO NORTH-NORTHEASTERLY
AFTER MIDNIGHT. GIVEN DRY AIRMASS AND LIGHT WINDS...NO FOG IS
EXPECTED TUESDAY MORNING AT TAF LOCATIONS. MOISTURE WILL INCREASE
FROM THE SOUTH ON TUESDAY WITH A SLIGHT CHANCE OF RAIN AT AGS/DNL
TOWARD THE END OF THE TAF PERIOD TUESDAY EVENING. CONFIDENCE TOO
LOW TO INCLUDE IN CURRENT ISSUANCE.

EXTENDED AVIATION OUTLOOK...A LOW PRESSURE SYSTEM TRACKING ALONG
THE GULF COAST MAY RESULT IN WIDESPREAD RESTRICTIONS WEDNESDAY.

&&

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

$$






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