290
FXUS64 KHUN 251601
AFDHUN
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE HUNTSVILLE AL
1101 AM CDT SUN OCT 25 2026
..NEW AVIATION
KEY MESSAGES
UPDATED AT 942 AM CDT SUN OCT 25 2026
- AFTERNOON RH VALUES WILL DROP INTO THE 25-35% RANGE EACH OF THE
NEXT SEVERAL AFTERNOONS (MAINLY IN SOUTHERN MIDDLE TENNESSEE
AND NW ALABAMA), CREATING THE NEED FOR EXTRA CAUTION REGARDING
OUTDOOR BURNING.
NEAR TERM
(REST OF TODAY AND TONIGHT)
ISSUED AT 942 AM CDT SUN OCT 25 2026
ANOTHER DAY OF HIGH PRESSURE INFLUENCE BOTH AT THE SURFACE AND
ALOFT WILL BRING CLEAR AND CALM CONDITIONS. AFTER A NIGHT OF
RADIATIONAL COOLING, TEMPS HAVE CLIMBED INTO THE HIGH 50S UNDER
ABUNDANT SUNSHINE. HIGHS WILL WARM TO THE MID 70S TODAY FOR MOST
AREAS WITH SOME OF OUR TERRAIN LOCATIONS STRUGGLING TO BREAK OUT
OF THE 60S.
THE RIDGE VALLEY SPLIT OBSERVED OVER THE LAST FEW DAYS WILL
CONTINUE INTO THE OVERNIGHT HOURS AS ANOTHER HIGH PRESSURE INDUCED
INVERSION SETS UP. CALM WINDS AND CLEAR SKIES WILL SUPPORT
RADIATIONAL COOLING AT THE SURFACE ALLOWING TEMPS TO COOL INTO THE
LOW TO MID 40S. THE AFORMENTIONED TEMPERATURE INVERSION WILL KEEP
TEMPS IN TERRAIN AREAS A FEW DEGREES WARMER CLOSER TO THE MID TO
HIGH 40S.
SHORT TERM
(MONDAY THROUGH WEDNESDAY)
ISSUED AT 942 AM CDT SUN OCT 25 2026
THROUGH THE SHORT TERM, RIDGING ALOFT WILL BUILD OVER THE TN
VALLEY, PEAKING ON TUESDAY. AS SUCH, TEMPS WILL WARM FROM THE MID
70S ON MONDAY TO THE HIGH 70S ON TUESDAY. BOUNDARY LAYER MIXING
AND LOCAL INVERSIONS WILL CONTINUE TO SUPPORT RIDGE/VALLEY SPLITS
IN NE AL WITH TEMPERATURE DIFFERENCES AROUND 5 DEGREES THROUGH THE
EARLY WORK WEEK.
BY TUESDAY NIGHT A DAMPENING MID LEVEL LOW WILL BE SURGING NE
THROUGH THE GREAT LAKES AREA. THIS WILL BRING SOME WEAK SHORT
WAVES THROUGH THE AREA SUPPORTING AN INCREASE IN CLOUD COVER. WE
WILL BE TOO FAR REMOVED FROM THE PARENT LOW FOR ANY INCREASE IN
PRECIP CHANCES, YET THE ADDITIONAL CLOUD COVER WILL DISSUADE TEMPS
FROM CONTINUING TO CLIMB, LIMITING HIGHS TO THE MID 70S ON
WEDNESDAY.
LONG TERM
(TUESDAY NIGHT THROUGH SATURDAY)
ISSUED AT 1010 PM CDT SAT OCT 24 2026
THE RIDGE WILL TEMPORAILY FLATTEN ON WEDNESDAY AS A DRY FRONT
RIPPLES ACROSS THE MID SOUTH/OHIO VALLEY, BRINGING SOME CLOUD COVER
TO THE AREA. HOWEVER, GIVEN THE VERY LIMITED MOISTURE, NO
PRECIPITATION IS FORECAST AND SOME LIMITED HEATING WILL STILL PUSH
HIGHS INTO THE 70S. NO AIR MASS MODIFICATION WILL OCCUR BEHIND THE
FRONT (SAVE FOR A REINFORCING SHOT OF DRIER AIR). IN FACT, A GRADUAL
WARMING TREND WILL TAKE PLACE LATE NEXT WEEK AS AN UPPER RIDGE AXIS
CENTERED OVER THE NORTHERN GULF AMPLIFIES NORTHWARD INTO THE
TENNESSEE VALLEY AND WINDS VEER TO THE SE/SSE. HIGHS WILL CLIMB INTO
THE UPPER 70S ON THURSDAY AND THE LOWER 80S IN MOST LOCATIONS FRIDAY
AND SATURDAY TO CLOSE OUT THE MONTH.
AVIATION
(18Z TAFS)
ISSUED AT 1101 AM CDT SUN OCT 25 2026
VFR FLIGHT WEATHER CONDITIONS ARE FORECAST DURING THE PERIOD.
EAST-SOUTHEAST FLOW OF 5-10KT WILL OCCUR DURING THE DAYTIME HOURS,
WITH LIGHT AND VARIABLE FLOW DURING THE NIGHTTIME.
HUN WATCHES/WARNINGS/ADVISORIES
AL...NONE.
TN...NONE.
NEAR TERM...RAD
SHORT TERM....RAD
LONG TERM....AMP
AVIATION...17
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