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 270543
AFDCAE

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE COLUMBIA SC
143 AM EDT MON APR 27 2015

.SYNOPSIS...
HIGH PRESSURE WILL BUILD SOUTH INTO THE REGION 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 SUNDAY.

&&

.NEAR TERM /THROUGH TODAY/...
BACK DOOR FRONT HAS PUSHED SOUTH THROUGH THE FORECAST AREA (FA). A
FEW LINGERING SHOWERS WILL BE POSSIBLE IN THE NEAR TERM.
OTHERWISE...EXPECT GRADUALLY DECREASING CLOUD COVER AND DRIER COOLER
AIR WORKING INTO THE REGION.

&&

.SHORT TERM /TONIGHT THROUGH TUESDAY NIGHT/...
FAIR WITH GENERALLY SEASONAL TEMPS EXPECTED AS DRY HIGH PRESSURE
BUILDS SE INTO OUR REGION TONIGHT AND TUESDAY. MODELS INDICATE UPPER
LOW TO OUR WEST WILL SHIFT EAST WITH SURFACE LOW PRESSURE DEVELOPING
ALONG THE GULF COAST TUESDAY. SOME UPPER ENERGY AHEAD OF THE MAIN
UPPER LOW COULD LEAD TO SOME PRECIP APPROACHING THE WEST FA DURING
THE DAY TUESDAY. MID AND HIGH LEVEL CLOUDINESS WILL BE ON THE
INCREASE TUESDAY...BUT IT MAY TAKE A LITTLE WHILE LONGER FOR THE LOW
LEVELS TO MOISTEN UP. GENERAL MODEL CONSENSUS GENERALLY KEEPS MOST
PRECIP WEST OF OUR FA UNTIL MAINLY AFTER 00Z WED.

&&

.LONG TERM /WEDNESDAY THROUGH SUNDAY/...
SURFACE LOW PRESSURE WILL CONTINUE TO SLOWLY MOVE EAST ALONG THE
GULF COAST AND UP THE CAROLINA COAST WED/WED NT INTO THU. WEAK IN
SITU WEDGE AT THE SURFACE EXPECTED TO DEVELOP IN RESPONSE TO
ISENTROPIC LIFT INDUCED RAINFALL AND RESULTANT EVAPORATIONAL COOLING.
TRENDED LOWER ON MAX TEMPS WED...AND TRENDED HIGHER ON POPS WED/WED
NT AS WELL DUE TO APPEARANCE OF HIGHER CONFIDENCE OF RAINFALL.
SOME WRAP AROUND MOISTURE BEHIND THE DEPARTING SURFACE LOW COUPLED
WITH SOME UPPER ENERGY JUST TO OUR N/NE MAY RESULT IN CHANCE
SHOWERS. DRY HIGH PRESSURE TO BUILD IN FROM THE NW FRIDAY THROUGH
SUNDAY.

&&

.AVIATION /06Z MONDAY THROUGH FRIDAY/...
VFR CONDITIONS EXPECTED THROUGH THE FORECAST PERIOD.

HIGH PRESSURE WILL CONTINUE TO BUILD INTO THE REGION FROM THE
NORTH TODAY AS COOLER AND DRIER AIR WORKS IN. SCATTERED TO BROKEN
VFR CIGS AROUND 4000-6000 FT EXPECTED SO SINK SOUTH ACROSS THE
TERMINALS DURING THE 06Z-12Z TIME FRAME WITH WEAK COOL ADVECTION.
PERSISTENT NORTHEASTERLY TO NORTHERLY WIND THROUGH THE PERIOD.

EXTENDED AVIATION OUTLOOK...NO SIGNIFICANT IMPACTS EXPECTED
THROUGH TUESDAY. A LOW PRESSURE SYSTEM TRACKING ALONG THE GULF
COAST MAY RESULT IN WIDESPREAD RESTRICTIONS WEDNESDAY.

&&

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

$$



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