682
FXUS64 KHUN 201823
AFDHUN
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE HUNTSVILLE AL
123 PM CDT TUE OCT 20 2026
..NEW NEAR TERM
KEY MESSAGES
UPDATED AT 934 AM CDT TUE OCT 20 2026
- NO IMPACTFUL WEATHER IS FORECAST THROUGH THIS WEEK.
NEAR TERM
(TONIGHT)
ISSUED AT 123 PM CDT TUE OCT 20 2026
THERE HAVE BEEN NO CHANGES TO THE PREVIOUS FORECAST. MOSTLY SUNNY
SKIES PERSIST ACROSS THE TENNESSEE VALLEY. AFTERNOON TEMPERATURES
ARE CURRENTLY IN THE LOWER 70S AND ARE EXPECTED TO RISE INTO THE
MID TO PERHAPS UPPER 70S IN SOME SPOTS OVER THE NEXT FEW HOURS.
PREVIOUS DISCUSSION:
SFC HIGH PRESSURE REMAINS DOMINANT ACROSS MUCH OF THE SOUTHEAST
THIS MORNING RESULTING IN COOL AND DRY CONDITIONS. SATELLITE
IMAGERY SHOWS A WEAK SHORTWAVE MOVING ACROSS CENTRAL TN, BUT THE
ONLY LOCAL IMPACT IS AN INCREASE IN HIGH LEVEL CLOUDS MOVING
THROUGH THE AREA THROUGH THE MORNING HOURS. BY THIS AFTERNOON,
MOSTLY SUNNY SKIES ARE FORECAST WITH AFTERNOON HIGHS WARMING INTO
THE MID TO UPPER 70S. THE MAIN WEATHER CONCERN TODAY IS ELEVATED
FIRE WX CONDITIONS THIS AFTERNOON. BOTH BMX AND BNA 12Z SOUNDINGS
SHOW A VERY DRY AIRMASS ALOFT THAT IS EXPECTED TO MIX DOWN TO THE
SFC. WHILE THIS WILL LOWER RH VALUES DOWN INTO THE 25-30 PERCENT
RANGE, WINDS WILL REMAIN LIGHT AND THEREFORE LIMIT ANY RISK OF RED
FLAG CONDITIONS. CLEAR SKIES AND LIGHT WINDS ARE FORECAST AGAIN TONIGHT
WHICH WILL RESULT IN IDEAL RADIATIONAL COOLING CONDITIONS.
OVERNIGHT TEMPERATURES WILL FALL QUICKLY AFTER SUNSET AND DROPPING
DOWN INTO THE LOW TO MID 40S.
SHORT TERM
(WEDNESDAY THROUGH THURSDAY NIGHT)
ISSUED AT 934 AM CDT TUE OCT 20 2026
NOT MUCH CHANGE IN THE FORECAST PATTERN IS EXPECTED AS WE HEAD
THROUGH THE MIDDLE OF THE WEEK. UPPER LEVEL RIDGING WILL NUDGE ITS
WAY EASTWARD TOWARDS THE TENNESSEE VALLEY. AT THE SAME TIME,
TROUGHING ALONG THE EAST COAST WILL SLOWLY EXPAND BACK TOWARDS
THE WEST. AS A RESULT, SFC HIGH PRESSURE REMAINS ENTRENCHED OVER
THE LOCAL FORECAST AREA KEEPING NEAR CLIMATOLOGICAL NORMS FOR
TEMPERATURES BOTH WEDNESDAY AND THURSDAY. EXPECT AFTERNOON HIGHS
TO BE IN THE MID TO UPPER 70S WITH LOWS IN THE MID 40S.
LONG TERM
(FRIDAY THROUGH MONDAY)
ISSUED AT 1006 PM CDT MON OCT 19 2026
A MEAN TROUGH POSITION IN SOME FASHION WILL REMAIN OVER THE FAR
EASTERN CONUS AS AN ANTICYCLONE AND RIDGE SHIFT EAST INTO THE MS
AND OH VALLEYS. AT THE SURFACE, HIGH PRESSURE WILL DROP SOUTH INTO
THE EASTERN CONUS AS WELL WITH A RIDGE AXIS INTO THE GULF STATES.
THIS WILL MAINTAIN A NEAR STATUS QUO FORECAST WITH DRY WEATHER
AND LITTLE DAY TO DAY TEMPERATURE CHANGES. HIGHS WILL BE NEAR
NORMAL IN THE LOWER 70S IN VALLEY AREAS AND UPPER 60S TO AROUND 70
ATOP THE HIGHER ELEVATIONS. LOWS WILL BE NEAR OR SLIGHTLY BELOW
NORMAL WITH LOWS IN THE MIDDLE TO UPPER 40S.
AVIATION
(18Z TAFS)
ISSUED AT 1136 AM CDT TUE OCT 20 2026
VFR CONDITIONS WITH LIGHT WINDS ARE FORECAST THROUGH THE TAF
PERIOD.
HUN WATCHES/WARNINGS/ADVISORIES
AL...NONE.
TN...NONE.
NEAR TERM...GH
SHORT TERM....GH
LONG TERM....17
AVIATION...GH
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