548
FXUS62 KCAE 200527
AFDCAE
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE COLUMBIA SC
1227 AM EST SAT DEC 20 2025
SYNOPSIS
CLEAR SKIES AND LIGHT WINDS ARE EXPECTED TONIGHT AS HIGH
PRESSURE APPROACHES FROM THE WEST. THE WEEKEND IS DRY WITH NEAR
TO ABOVE NORMAL TEMPERATURES. A DRY FRONTAL PASSAGE LATE THIS
WEEKEND WILL RESULT IN COOLER TEMPERATURES ON MONDAY, FOLLOWED
BY A STEADY WARMING TREND THROUGH THE REMAINDER OF THE PERIOD.
NEAR TERM /THROUGH TONIGHT/
KEY MESSAGE(S):
- DRY AND SEASONAL CONDITIONS EXPECTED TODAY AS HIGH PRESSURE
TRAVERSES THE FORECAST AREA.
NEAR IDEAL RADIATIONAL COOLING CONDITIONS HAVE SET UP ACROSS THE
FORECAST AREA TONIGHT. HIGH PRESSURE HAS SHIFTED SOUTHEASTWARD
AND IS BASICALLY ATOP THE AREA, WITH VERY DRY AIR AND LIGHT
WINDS IN PLACE. TEMPS ARE GENERALLY IN THE UPPER 30S OR LOW 40S
ACROSS THE AREA, WITH LOWS FORECAST TO BOTTOM OUT RIGHT AROUND
FREEZING FOR MOST. AS WE GET INTO THE DAY TODAY, A NICE DAY IS
FORECAST TO UNFOLD. MOSTLY ZONAL FLOW ALOFT IS EXPECTED ACROSS
THE AREA TODAY AND THE PROGRESSIVE PATTERN WILL FAVOR THE
SURFACE HIGH TO SHIFT EASTWARD THROUGH THE DAY. THE AIRMASS IS
PRETTY NEUTRAL, AND WILL FAVOR TEMPS BUMPING TO NEAR NORMAL
VALUES BY THIS AFTERNOON. OVERNIGHT TONIGHT, SOME HIGH CLOUDS
MAY OVERSPREAD THE AREA AS ANOTHER TROUGH GETS SET TO PASS TO
OUR NORTH ON SUNDAY. THIS SHOULD HELP KEEP TEMPS IN THE UPPER
30S FOR LOWS.
SHORT TERM /SUNDAY THROUGH MONDAY NIGHT/
KEY MESSAGE(S):
- DRY CONDITIONS WITH ABOVE AVERAGE TEMPS ON SUNDAY; COOLER ON
MONDAY.
DRY COLD FRONT SHOULD BE OUT OF THE FORECAST AREA BY THE START
OF THE SHORT TERM PERIOD, OR SHORTLY THERE AFTER. DESPITE THE
COLD FRONT PASSING, COLD AIR ADVECTION IS EXPECTED TO HOLD OFF
TIL LATER IN THE DAY OR OVERNIGHT. THUS, SUNDAY IS FORECAST TO
BE A FEW DEGREES ABOVE AVERAGE IN THE AFTERNOON. ONCE THE COLD
AIR ADVECTION KICKS IN, TEMPS TAKE A NOTICEABLE DROP FOR MONDAY,
WITH HIGHS SEVERAL DEGREES BELOW AVERAGE.
LONG TERM /TUESDAY THROUGH FRIDAY/
KEY MESSAGE(S):
- DRY WITH GENERAL WARMING TREND.
HIGH PRESSURE AND UPPER RIDGING BEGIN TO BUILD OVER THE AREA AT
THE START OF THE LONG TERM, RESULTING IN CONTINUED DRY
CONDITIONS. A WARMING TREND IS ALSO EXPECTED AS THE RIDGE BUILDS
OVER THE REGION. ANOTHER DRY FRONT COULD POTENTIALLY MOVE
THROUGH THE REGION CHRISTMAS EVE. EVEN IF A FRONT MOVES THROUGH
THE AREA, IT APPEARS UNLIKELY THAT THERE WILL BE MUCH OF AN
EFFECT ON TEMPERATURES DUE TO THE RIDGE OVER THE REGION.
AVIATION /05Z SATURDAY THROUGH WEDNESDAY/
VFR CONDITIONS WILL PREVAIL THROUGH THE FORECAST PERIOD.
WINDS HAVE DIMINISHED INTO THE LIGHT AND VARIABLE RANGE, WHERE
THEY SHOULD REMAIN FOR THE BULK OF THIS PERIOD. SURFACE HIGH
PRESSURE IS FORECAST TO PUSH THROUGH THE REGION TODAY, KEEPING
SKIES CLEAR AND TAFS VFR THROUGHOUT.
EXTENDED AVIATION OUTLOOK...DRIER AIR SHOULD REMAIN IN PLACE FOR THE
REST WEEKEND WITH LOW CHANCES FOR RESTRICTIONS.
CAE WATCHES/WARNINGS/ADVISORIES
SC...NONE.
GA...NONE.
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page