705
FXUS64 KHUN 011944
AFDHUN
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE HUNTSVILLE AL
244 PM CDT TUE SEP 1 2026
..NEW NEAR TERM
KEY MESSAGES
UPDATED AT 1014 AM CDT TUE SEP 1 2026
- A HEAT ADVISORY HAS BEEN ISSUED 11 AM WEDNESDAY THROUGH 8 PM
SATURDAY DUE TO MAJOR TO EXTREME HEATRISK ALONG WITH AFTERNOON
HEAT INDICES RISING UP TO 105-109 DEGREES.
NEAR TERM
(TONIGHT)
ISSUED AT 244 PM CDT TUE SEP 1 2026
NO MAJOR CHANGES FROM THE PREVIOUS FORECAST. SCATTERED CLOUD COVER
IS ONGOING THIS AFTERNOON ACROSS THE TENNESSEE VALLEY, PROVIDING
LITTLE RELIEF FROM TEMPERATURES IN THE LOW TO MID 90S. AS WE DIVE
INTO TONIGHT, LOW TEMPERATURES ARE STILL FORECAST TO DROP INTO THE
LOW TO MID 70S ACCOMPANIED BY RELATIVELY SMALL DEW POINT
DEPRESSIONS. AS A RESULT, AT LEAST PATCHY FOG FORMATION IS LIKELY-
ESPECIALLY ALONG LARGE BODIES OF WATER. IF FOG IS REALIZED, IT
SHOULD DISSIPATE SHORTLY AFTER SUNRISE.
SHORT TERM
(WEDNESDAY THROUGH FRIDAY)
ISSUED AT 1014 AM CDT TUE SEP 1 2026
THE PATTERN OF HOT AND DRY CONDITIONS IS NOT FORECAST TO CHANGE
THROUGH THE SHORT TERM AS THE UPPER LEVEL RIDGE AND SUBSEQUENT SFC
HIGH PRESSURE REMAIN SLUGGED OVER THE AREA. MAJOR TO EXTREME
HEATRISK IS FORECAST OVER PORTIONS OF THE AREA THROUGH THE END OF
THE WORK WEEK. THIS, PAIRED WITH WBGT VALUES IN THE 88-90 DEGREE
RANGE AND HEAT INDICES UP TO 105-109 DEGREES, HAS INSPIRED THE
ISSUANCE OF A HEAT ADVISORY BEGINNING AT 11 AM WEDNESDAY AND
CONTINUING THROUGH 8 PM SATURDAY. HIGH TEMPERATURES ARE FORECAST
TO REACH THE MID TO UPPER 90S DURING THIS TIME WITH LITTLE RELIEF
OVERNIGHT AS LOWS DROP INTO THE 70S. ON WEDNESDAY, THERE IS A LOW
CHANCE (10-20%) OF TEMPERATURES REACHING 100 DEGREES IN AREAS
AFFECTED BY URBAN HEAT ISLAND (MSL, HSV). IF THIS IS REALIZED, IT
WILL BE THE FIRST 100 DEGREE DAY OF 2026 (AND HOPEFULLY THE ONLY
ONE!). IF YOU HAVE OUTDOOR PLANS THIS WEEK, BE SURE TO REMAIN
HYDRATED AND SEEK SHADE WHEN OUTDOORS TO AVOID HEAT ILLNESS.
LONG TERM
(FRIDAY THROUGH MONDAY) I
ISSUED AT 840 PM CDT MON AUG 31 2026
NOT MUCH CHANGE IS EXPECTED IN THE OVERALL WEATHER PATTERN AS WE HEAD
THROUGH THE LONG TERM PERIOD. DANGEROUS HEAT CONTINUES TO BE A THREAT
THROUGH AT LEAST SUNDAY WITH HEAT RISK FORECAST TO REMAIN AT MODERATE
(LEVEL 2 OF 4) TO MAJOR (LEVEL 3 OF 4). THE UPPER LEVEL RIDGE
REMAINS ENTRENCHED OVER THE CENTRAL AND SOUTHEASTERN US WITH HIGH
PRESSURE DOMINANT UNDERNEATH. AS A RESULT, HOT AND DRY CONDITIONS
CONTINUE THROUGH THE WEEKEND. WHILE WE CANNOT RULE OUT A LOW (10-20%)
CHANCE OF AN ISOLATED THUNDERSTORM EACH AFTERNOON, CONFIDENCE IS
QUITE LOW IN THIS OCCURRING AND MOST LOCATIONS WILL LIKELY REMAIN
DRY. AFTERNOON HIGHS EACH AFTERNOON WILL RISE INTO THE MID TO UPPER
90S WITH HEAT INDICES BETWEEN 100-105F. THE DOME OF HIGH PRESSURE
BEGINS TO RECEDE BACK TO THE WEST ON MONDAY, WHICH WILL PROVIDE SOME
RELIEF TO THE HEAT WITH AFTERNOON HIGHS ONLY IN THE LOWER 90S.
HOWEVER, MODELS CONTINUE TO TREND LATER WITH THIS OCCURRING AND IT
WILL BE SOMETHING WE WILL WATCH AS WE GET CLOSER IN TIME.
AVIATION
(18Z TAFS)
ISSUED AT 1152 AM CDT TUE SEP 1 2026
VFR CONDITIONS ARE FORECAST THROUGH THE TAF PERIOD AT BOTH KMSL
AND KHSV. A LOW CHANCE OF PATCHY FOG IS FORECAST TONIGHT,
PRIMARILY ALONG LARGE BODIES OF WATER. CONFIDENCE IS TOO LOW IN
THIS EFFECTING THE TERMINALS TO INCLUDE THIS IN THE TAF AT THIS
TIME.
HUN WATCHES/WARNINGS/ADVISORIES
AL...HEAT ADVISORY FROM 11 AM WEDNESDAY TO 8 PM CDT SATURDAY FOR
ALZ001>010-016.
TN...HEAT ADVISORY FROM 11 AM WEDNESDAY TO 8 PM CDT SATURDAY FOR
TNZ076-096-097.
NEAR TERM...HC
SHORT TERM....HC
LONG TERM....GH
AVIATION...HC
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