487
FXUS62 KCAE 052350
AFDCAE
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE COLUMBIA SC
750 PM EDT MON OCT 5 2026
WHAT HAS CHANGED
MINIMAL CHANGE TO KEY MESSAGES. AVIATION DISCUSSION UPDATED FOR
00Z TAFS.
KEY MESSAGES
- 1. HIGH PRESSURE AND DRIER AIR BUILDS IN TONIGHT FOLLOWED BY
COOL TEMPS INTO MID-WEEK BEFORE A WARMING AND WETTER PATTERN
DEVELOPS INTO THE WEEKEND.
DISCUSSION
KEY MESSAGE 1: HIGH PRESSURE AND DRIER AIR BUILDS IN TONIGHT
FOLLOWED BY COOL TEMPS INTO MID-WEEK BEFORE A WARMING AND
WETTER PATTERN DEVELOPS INTO THE WEEKEND.
SURFACE RIDGING BUILDS INTO THE REGION TUESDAY WITH PWAT'S
DROPPING TO AROUND 0.50 INCHES AS THIS DRIER SURFACE HIGH
PRESSURE BUILDS INTO THE MID ATLANTIC. PERSISTENT NORTHEASTERLY
LOW LEVEL FLOW INTO THE MID WEEK SHOULD KEEP TEMPERATURES NEAR
TO JUST BELOW NORMAL WITH LOWER HUMIDITY AND DRY WEATHER
EXPECTED. WEAK SURFACE RIDGING IS EXPECTED TO CONTINUE INTO THE
LATE WEEK ALONG WITH SOME BUILDING HEIGHTS AND TEMPS RETURNING
TO NEAR-ABOVE AVERAGE.
THE WEEKEND IS LOOKING MORE ACTIVE AS MOISTURE RETURNS ACROSS
THE REGION AS DEEP SOUTHWESTERLY DEVELOPS. THERE COULD END UP
BEING SOME TROPICAL CONNECTION WITHIN THIS FLOW WITH NHC NOW
OUTLOOKING THE SOUTHERN GULF WITH A 70% CHANCE OF DEVELOPMENT.
THIS WILL BE THE KEY COMPONENT TO WHETHER WE SEE APPRECIABLE
RAIN WITH THIS SETUP. WITHOUT ANY TROPICAL COMPONENT, A BROAD
SURFACE RIDGE WILL BUILD AND ALLOW FOR WIDESPREAD BUT WEAK
OVERRUNNING WITH NO NOTABLE SYNOPTIC FORCING (NOT DISSIMILAR TO
LAST WEEKEND) AND THEREFORE A GENERALLY LOW QPF SETUP. WITH A
TROPICAL-SYNOPTIC SHORTWAVE TO HELP DRIVE BOTH ENHANCEMENT OF
PWAT'S AND OMEGA, THEN WE COULD SEE A NOTABLE RAIN EVENT GIVEN
THE FRONTAL BOUNDARY & OVERRUNNING FAVORABILITY IN PLACE.
GUIDANCE IS A MESS OF SOLUTIONS AT THIS POINT AND UNTIL A STEADY
STATE SURFACE LOW DEVELOPS IN THE GULF, UNCERTAINTY WILL REMAIN
VERY HIGH.
AVIATION /00Z TUESDAY THROUGH SATURDAY/
VFR CONDITIONS PREVAIL THROUGH THE TAF PERIOD.
WITH RAIN ENDED AND WELL EAST OF THE TERMINALS, LOW CLOUDS HAVE
GENERALLY DIMINISHED AND MAINLY HIGH CLOUDS REMAIN OVER THE AREA.
CLEARING OF THESE HIGH CLOUDS FROM WEST TO EAST IS EXPECTED OVER THE
NEXT SEVERAL HOURS AS DRIER AIR CONTINUES TO MOVE INTO THE REGION.
WINDS SHOULD REMAIN LIGHT OUT OF THE NORTHEAST THE REMAINDER OF THE
NIGHT BEFORE INCREASING TUESDAY MORNING TO AROUND 10 KTS. A FEW
HIGHER GUSTS NEARING 18-20 KTS ARE ALSO POSSIBLE THROUGH THE DAY
TUESDAY AS A BIT MORE OF AN EASTERLY COMPONENT DEVELOPS. CANNOT RULE
OUT SOME BRIEF STRATUS OR PATCHY FOG AROUND SUNRISE TUESDAY AS
GUIDANCE HAS BEEN INCONSISTENT, BUT IT WILL DEPEND ON HOW FAST THE
DRIER AIR MOVES IN COMPARED TO CLEARING OF HIGH CLOUDS. FOR NOW,
HAVE LEFT THE TAFS VFR BUT TRENDS WILL BE MONITORED.
EXTENDED AVIATION OUTLOOK...VFR CONDITIONS ARE EXPECTED INTO
THE MID TO LATE WEEK WITH DRIER AIR IN PLACE.
CAE WATCHES/WARNINGS/ADVISORIES
SC...NONE.
GA...NONE.
DISCUSSION...23/42
AVIATION...EC
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