490
FXUS64 KHUN 280419
AFDHUN
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE HUNTSVILLE AL
1119 PM CDT THU AUG 27 2026
..NEW AVIATION
KEY MESSAGES
UPDATED AT 1047 PM CDT THU AUG 27 2026
- DANGEROUS HEAT WILL RETURN LATE THIS WEEKEND INTO EARLY NEXT
WEEK WITH HEAT INDICES APPROACHING OR EXCEEDING 100 DEGREES.
NEAR TERM
(REST OF TONIGHT AND FRIDAY)
ISSUED AT 1047 PM CDT THU AUG 27 2026
THE MAIN CONCERN TONIGHT WILL ONCE AGAIN BE THE THREAT FOR DENSE
FOG, THOUGH WE HAVE NOT SEEN ANY ON NIGHTTIME RGB SATELLITE OR IN
SFC OBSERVATIONS YET. CLEAR SKIES, CALM WINDS, AND NEAR 0 DEGREE
DEWPOINT DEPRESSIONS POINT TO A GOOD CHANCE FOR AT LEAST PATCHY
DENSE FOG THOUGH A DENSE FOG ADVISORY IS CERTAINLY IN THE CARDS
LATER TONIGHT THROUGH TOMORROW MORNING. OVERNIGHT LOWS WILL FALL
TO THE UPPER 60S/LOWER 70S.
HIGH PRESSURE WILL BEGIN TO SINK SOUTH INTO THE AREA ON FRIDAY
WHICH WILL HELP BRING DRIER CONDITIONS INTO THE AREA. ANY EARLY
MORNING FOG SHOULD BURN OFF BY 8-9AM AND WILL BE FOLLOWED BY
ABUNDANT SUNSHINE AND TEMPS IN THE UPPER 80S/LOWER 90S. THE GOOD
NEWS IS THAT AT LEAST FOR NOW, LOWER HUMIDITY WILL MITIGATE THE
CHANCES FOR HEAT INDICES OVER THE 100 DEGREE MARK.
SHORT TERM
(FRIDAY NIGHT THROUGH SUNDAY)
ISSUED AT 1047 PM CDT THU AUG 27 2026
UPPER RIDGING WILL BEGIN TO BUILD ACROSS THE CENTRAL AND EASTERN
U.S. THIS WEEKEND, LEADING TO A MOSTLY DRY BUT WARMING FORECAST.
AN AXIS OF HIGHER MOISTURE SHOULD REMAIN POSITIONED TO OUR
SOUTHEAST AND WILL RESULT IN LOW CHANCES (20% OR LESS) FOR DIURNAL
THUNDERSTORMS OVER SE PORTIONS OF THE TN VALLEY BOTH SATURDAY AND
SUNDAY. THE BIGGER THREAT WILL COME FROM INCREASING HEAT THROUGH
SUNDAY, WITH HIGHS CLIMBING INTO THE LOWER 90S AND HEAT INDICES
APPROACHING OR REACHING 100 DEGREES. THIS WILL BECOME DANGEROUS
FOR THOSE WHO ARE ESPECIALLY SUSCEPTIBLE TO THE HEAT AND THOSE
WITHOUT PROPER COOLING AND HYDRATION. PRACTICE HEAT SAFETY THIS
WEEKEND AND NEVER LEAVE PEOPLE OR PETS UNATTENDED IN VEHICLES!
LONG TERM
(SUNDAY NIGHT THROUGH THURSDAY)
ISSUED AT 1047 PM CDT THU AUG 27 2026
THE LONG TERM PERIOD WILL BE DOMINATED BY AN UPPER LEVEL RIDGE
FORECAST TO RESIDE OVER THE SOUTHEAST U.S., BRINGING SFC HIGH
PRESSURE AND SUBSEQUENT DRY/WARM CONDITIONS TO THE TENNESSEE VALLEY.
A WARMING TREND WILL SET UP EARLY NEXT WEEK WITH HIGHS REACHING
COMFORTABLY INTO THE 90S AND HEAT INDICES IN THE 100-105 DEGREE
RANGE. THERE IS A LOW CHANCE A HEAT ADVISORY WILL NEED TO BE ISSUED
BY MID NEXT WEEK FOR HEAT INDICES OVER 105 DEGREES IN PORTIONS OF
NORTHERN ALABAMA. OTHERWISE, POPS REMAIN VERY LOW EACH DAY AS MOSTLY
DRY WEATHER IS FORECAST. BE SURE TO KEEP UP TO DATE WITH THE LATEST
FORECAST AND PRACTICE HEAT SAFETY NEXT WEEK SUCH AS SEEKING SHADE
WHEN OUTDOORS AND REMAINING HYDRATED.
AVIATION
(06Z TAFS)
ISSUED AT 1119 PM CDT THU AUG 27 2026
PATCHY TO AREAS OF BR/FG WILL DEVELOP OVER THE NEXT FEW HOURS.
VISIBILITY OF 1/4-3/4SM IS EXPECTED IN SOME RIVER VALLEY LOCATIONS
BEFORE DISSIPATING BY ~14Z. VFR CONDITIONS WILL THEN PERSIST THE
REST OF THE PERIOD.
CLIMATE
ISSUED AT 605 PM CDT THU AUG 27 2026
MODERATE RISK FOR MUCH ABOVE NORMAL TEMPERATURES:
THE CLIMATE PREDICTION CENTER HAS INCLUDED THE ENTIRE TENNESSEE
VALLEY IN A MODERATE RISK FOR MUCH ABOVE NORMAL TEMPERATURES FOR
SEPTEMBER 4TH THROUGH 6TH. THEREFORE, THERE IS A 40-60% CHANCE
FOR TEMPERATURES ABOVE 95 DEGREES F AND HEAT INDEX VALUES
EXCEEDING 105 DEGREES F DURING THIS PERIOD
MORE INFORMATION ON THE CPC U.S. HAZARDS OUTLOOK CAN BE FOUND AT:
HTTPS://WWW.CPC.NCEP.NOAA.GOV/PRODUCTS/PREDICTIONS/THREATS/THREATS.PHP
HUN WATCHES/WARNINGS/ADVISORIES
AL...NONE.
TN...NONE.
NEAR TERM...25
SHORT TERM....25
LONG TERM....HC
AVIATION...17
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page