697
FXUS62 KCAE 070011
AFDCAE
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE COLUMBIA SC
811 PM EDT TUE OCT 6 2026
WHAT HAS CHANGED
SPLIT UP KEY MESSAGES TO ADDRESS THE POTENTIAL RAINFALL THIS
UPCOMING WEEKEND. AVIATION DISCUSSION UPDATED FOR 00Z TAFS.
KEY MESSAGES
- 1. A GRADUAL WARMING TREND PERSISTS MUCH OF THIS WEEK.
- 2. A WETTER PATTERN DEVELOPS INTO THE WEEKEND WITH SOME
TROPICAL CONNECTIONS.
DISCUSSION
KEY MESSAGE 1: A GRADUAL WARMING TREND PERSISTS MUCH OF THIS
WEEK.
RAIN-FREE CONDITIONS PERSIST FOR THE NEXT SEVERAL DAYS WITH
SURFACE HIGH PRESSURE OVER THE REGION AND PWATS SITTING AT LESS
THAN 0.75 INCHES THROUGH AT LEAST THURSDAY. PERSISTENT
NORTHEASTERLY LOW LEVEL FLOW INTO THE MID-WEEK SHOULD KEEP
TEMPERATURES PLEASANT, THOUGH A SLIGHT WARMING TREND WILL OCCUR
AS TEMPERATURES RETURN TO THE LOW-MID 80S BY THURSDAY AND
FRIDAY.
KEY MESSAGE 2: A WETTER PATTERN DEVELOPS INTO THE WEEKEND WITH
SOME TROPICAL CONNECTIONS.
ATTENTION TURNS TO A MORE ACTIVE WEEKEND AS MOISTURE RETURNS
ACROSS THE REGION WITH SOUTHERLY TO SOUTHEASTERLY FLOW ALOFT.
ALTHOUGH GUIDANCE HAS STRUGGLED WITH THE TIMING OF WHAT IS NOW
TROPICAL DEPRESSION 9 (TD9) CURRENTLY IN THE BAY OF CAMPECHE,
CONFIDENCE IS INCREASING THAT MOISTURE FROM THIS SYSTEM MAY
IMPACT THE REGION OVER THE UPCOMING WEEKEND. GUIDANCE IS IN
DECENT AGREEMENT IN THE OVERALL TRACK WITH FAIRLY PREDICTABLE
STEERING FLOWS ACROSS THE GULF INTO THE SOUTHERN US, BRINGING
THE SYSTEM SOMEWHERE FROM LOUISIANA TO THE PANHANDLE OF FLORIDA;
TIMING AND INTENSITY DIFFERENCES WITHIN THE GUIDANCE ARE HIGH,
ESPECIALLY BETWEEN AI, HURRICANE, AND GLOBAL PHYSICS BASED
ENSEMBLES HOWEVER. REGARDLESS, A STRONG SURFACE RIDGE WITH
PERSISTENT, DEEP EASTERLY COMPONENT WILL EFFECTIVELY SERVE AS A
ROAD BLOCK TO HOW FAR EAST THE CORE OF THE TROPICAL SYSTEM CAN
MAKE IT. DESPITE THE CORE OF THE SYSTEM LIKELY REMAINING WELL TO
OUR WEST, THIS SURFACE RIDGING PRESENTS AN IMPRESSIVE
OVERRUNNING SETUP WITH A PLUME OF DEEP TROPICAL MOISTURE SURGING
NORTHWARD ALONG THE SYSTEM'S EASTERN FLANK. MODEL CROSS
SECTIONS SHOW THE EXPECTED IMPRESSIVE FETCH OF POTENTIAL
ISENTROPIC LIFT THROUGHOUT THE AREA ALONG WITH NEARLY SATURATED
AND WEAKLY UNSTABLE PROFILES AS THE TROPICAL MOISTURE ARRIVES AS
EFFECTIVELY A WARM FRONT. EXACTLY WHERE STRONGEST MESO-
SYNOPTIC SCALE LIFT SETS UP AND THE EXTENT OF THE HIGH PWAT'S
ARE STILL VERY DIFFICULT TO GUESS AT, BUT CHANCES FOR IMPACTFUL
HEAVY RAIN ARE THERE. WPC HAS INTRODUCED A DAY 5 (SATURDAY)
SLIGHT RISK ERO FOR MUCH OF THE FA. REGARDLESS, WIDESPREAD RAIN
WITH SOME BREEZY WINDS AS THE PRESSURE GRADIENT TIGHTENS ACROSS
THE AREA LOOKS TO BE THE MOST LIKELY IMPACT AT THIS TIME, BUT
OBVIOUSLY LOTS TO STILL WATCH AND MONITOR IN THE COMING DAYS.
FINER SCALE DETAILS WILL DETERMINE IF THIS WOULD JUST BE A
BENEFICIAL RAIN OR MORE OF A FLOODING THREAT.
AVIATION /00Z WEDNESDAY THROUGH MONDAY/
VFR CONDITIONS THROUGH THE TAF PERIOD.
A DRY AIR MASS WITH ONLY A FEW PASSING HIGH CLOUDS WILL
CONTINUE TO DOMINATE ACROSS THE REGION THROUGH THE TAF PERIOD.
NORTHEASTERLY WINDS SHOULD BECOME DECREASE AFTER SUNSET,
REMAINING LIGHT OR DIMINISHING THROUGH TONIGHT. FOG AND LOW
STRATUS ARE NOT EXPECTED, THOUGH A FEW LOCALIZED AREAS OF PATCHY
GROUND FOG MAY DEVELOP ALONG THE RIVERS. OTHERWISE, VFR
CONDITIONS CONTINUE INTO WEDNESDAY WITH LIGHT NORTHEAST WINDS
AND ONLY A FEW PASSING CIRRUS CLOUDS.
EXTENDED AVIATION OUTLOOK...VFR CONDITIONS WILL CONTINUE INTO
LATE WEEK WITH A DRY AIR MASS IN PLACE. AS MOISTURE INCREASES
THIS WEEKEND, RESTRICTIONS ARE POSSIBLE WITH INCREASING CLOUD
COVER AND PRECIPITATION CHANCES.
CAE WATCHES/WARNINGS/ADVISORIES
SC...NONE.
GA...NONE.
DISCUSSION...EC/42
AVIATION...SF
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