763
FXUS64 KHUN 082158
AFDHUN
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE HUNTSVILLE AL
458 PM CDT WED OCT 8 2025
..NEW AVIATION
NEAR TERM
(TONIGHT)
ISSUED AT 443 PM CDT WED OCT 8 2025
THE DENSE STRATUS DECK HAS BEGIN TO ERODE AS DRIER AIR BEGINS TO
ADVECT INTO THE AREA. NORTHERLY FLOW, GUSTING UP TO 20MPH AT
TIMES, WILL CONTINUE TO BRING COOLER AND DRIER TEMPS/DEWPOINTS
THIS EVENING AND OVERNIGHT AS EVIDENT BY SFC OBS SHOWING DEWPOINTS
IN THE 40S AND 50S ACROSS CENTRAL AND WESTERN PORTIONS OF TN.
WITH THAT IN MIND, EXPECT COOL TEMPS OVERNIGHT WITH LOWS FALLING
TO THE UPPER 40S ACROSS SOUTHERN MIDDLE TN AND LOW TO MID 50S
ACROSS NORTHERN AL. DEWPOINT DEPRESSIONS SHOULD BE LARGE ENOUGH TO
PREVENT FOG FROM BECOMING MUCH OF AN ISSUE TONIGHT, SO WE DID NOT
ADD IT INTO THE FORECAST DURING THE AFTERNOON UPDATE.
SHORT TERM
(THURSDAY THROUGH FRIDAY NIGHT)
ISSUED AT 443 PM CDT WED OCT 8 2025
THE AFOREMENTIONED RIDGE WILL CONTINUE TO BUILD TO OUR WEST
THROUGH THE END OF THE WORK WEEK AND LARGE SCALE SUBSIDENCE WILL
HELP KEEP DRIER AIR IN PLACE. WITH SFC HIGH PRESSURE OVER THE
NORTHEAST ATLANTIC COAST, WE WILL ALSO FEEL THE BENEFITS OF COLD
AIR DAMMING FROM THE APPALACHIANS. DAYTIME HIGHS WILL BE IN THE
70S WITH LOWS IN THE UPPER 40S AND 50S EACH NIGHT. SOME OF THE
COOLEST AIR OF THE SEASON IS EXPECTED FRIDAY NIGHT AS LOWS SINK TO
THE UPPER 40S ACROSS A LARGER PORTION OF THE AREA. THE ONLY
POTENTIAL IMPACT DURING THIS TIME PERIOD WILL BE THE CHANCE FOR
PATCHY FOG IN AND AROUND RIVER VALLEYS AND SHELTERED LOCATIONS.
LONG TERM
(SATURDAY THROUGH TUESDAY)
ISSUED AT 443 PM CDT WED OCT 8 2025
GLOBAL MODELS CONTINUE TO INDICATE THAT A DEVELOPING 500-MB
TROUGH (INITIALLY POSITIONED ALONG THE SOUTHEASTERN ATLANTIC
COAST) WILL CONTINUE TO INTENSIFY AS IT LIFTS NORTH-NORTHEASTWARD
THIS WEEKEND. THIS DISTURBANCE MAY THEN BECOME ABSORBED WITHIN THE
FLOW AROUND A MORE COMPACT NORTHERN STREAM TROUGH DIGGING
SOUTHEASTWARD FROM THE GREAT LAKES, WITH THIS EVOLUTION RESULTING
IN THE FORMATION OF A LARGE CLOSED LOW IN THE GENERAL VICINITY OF
THE MID-ATLANTIC COAST. WITH NNW WINDS ALOFT PREDICTED TO INCREASE
INTO THE 25-35 KNOT RANGE BETWEEN THE LOW TO OUR EAST AND A
500-MB RIDGE EXTENDING FROM SOUTH TX INTO THE GREAT LAKES, WE
EXPECT DRY CONDITIONS TO PREVAIL THROUGH THE PERIOD. HIGHS WILL
SLOWLY WARM FROM THE 75-80F RANGE ON SATURDAY INTO THE L-M 80S BY
TUESDAY, WITH LOWS ALSO INCREASING FROM THE 45-50F RANGE SUNDAY
MORNING INTO THE L-M 50S EARLY NEXT WEEK.
AVIATION
(00Z TAFS)
ISSUED AT 458 PM CDT WED OCT 8 2025
VFR FLIGHT WEATHER CONDITIONS ARE FORECAST. WIND FLOW WILL BE NORTH
TO NORTHEAST 10KT OR LESS DURING THE PERIOD.
HUN WATCHES/WARNINGS/ADVISORIES
AL...NONE.
TN...NONE.
NEAR TERM...25
SHORT TERM....25
LONG TERM....70
AVIATION...17
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