855
FXUS64 KHUN 280747
AFDHUN
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE HUNTSVILLE AL
247 AM CDT FRI AUG 28 2026
..NEW NEAR TERM
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
(TODAY)
ISSUED AT 247 AM CDT FRI AUG 28 2026
PATCHY FOG HAS DEVELOPED IN A FEW RIVER VALLEY LOCATIONS. THE FOG
IS RATHER ISOLATED AT THIS TIME, BUT WILL MONITOR TRENDS OVER THE
NEXT COUPLE OF HOURS. A VERY WEAK COOL FRONT DROPPED SOUTH INTO
NORTH AL THURSDAY EVENING, AND SHOULD SLIDE SOUTHEAST OF THE AREA
BY LATE THIS AFTERNOON. THERE IS A 10-15% OF A SHOWER OR
THUNDERSTORM ALONG THE I-59/LOOKOUT MTN CORRIDOR WITH THIS FRONT
IN THE AREA TODAY. FURTHER NORTHWEST, A NORTH WIND OF 5-10 MPH
WILL ADVECT DRIER AIR INTO THE TN VALLEY, RESULTING IN DEW POINTS
FALLING INTO THE LOWER TO MIDDLE 60S. SUNSHINE WILL PUSH
TEMPERATURES INTO THE 88-92 DEGREE RANGE IN VALLEY LOCATIONS (A
FEW DEGREES COOLER ATOP THE HIGHER PLATEAU AREAS).
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...17
SHORT TERM....25
LONG TERM....HC
AVIATION...17
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