500
FXUS64 KMRX 020541
AFDMRX
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE MORRISTOWN TN
141 AM EDT WED SEP 2 2026
..NEW AVIATION
KEY MESSAGES
UPDATED AT 132 AM EDT WED SEP 2 2026
- VERY HOT CONDITIONS ARE EXPECTED THROUGH THE REST OF THE WEEK WITH
HIGHS REACHING WELL INTO THE 90S AND HEAT INDEX VALUES EXCEEDING 100
FOR MOST PLACES
- TEMPERATURES GRADUALLY MODERATE SOME THROUGH THE WEEKEND WITH A
RETURN OF AT LEAST ISOLATED SHOWERS AND STORMS.
DISCUSSION
ISSUED AT 229 PM EDT TUE SEP 1 2026
CURRENTLY, A NEAR 5,940M RIDGE IS CENTERED TO OUR WEST WITH HIGH
PRESSURE IN PLACE ACROSS THE EASTERN U.S. THE ANOMALOUS RIDGE AND
LINGERING MOISTURE WILL CONTINUE THE CURRENT HEAT WAVE. A SLOW
EASTWARD SHIFT OF THE RIDGE WEDNESDAY AND THURSDAY WILL PUSH
TEMPERATURES EVEN FURTHER INTO THE 90S, POTENTIALLY NEAR 100 DEGREES
FOR PARTS OF THE SOUTHERN VALLEY. HEAT INDEX VALUES WILL REACH OR
EXCEED 100 FOR MOST PLACES WITH 105 POSSIBLE IN SOME SOUTHERN AREAS
WEDNESDAY OR THURSDAY. LITTLE RELIEF FROM CLOUDS OR DIURNAL
CONVECTION CAN BE EXPECTED BECAUSE OF STRONG SUBSIDENCE AND LIMITED
COVERAGE OUTSIDE OF THE MOUNTAINS. FOR REFERENCE, HERE ARE THE
RECORD HIGHS THROUGH THE NEXT 3 DAYS.
DAILY RECORD HIGH MAXIMUM TEMPERATURES
DATE CHATTANOOGA KNOXVILLE TRI-CITIES OAK RIDGE
09-02 100(2011) 98(2011) 96(1943) 99(1953)
09-03 100(1954) 98(2011) 96(2011) 99(2011)
09-04 102(1954) 101(1954) 99(1954) 100(1954)
BY FRIDAY, THE PATTERN BEGINS TO SHIFT SLIGHTLY AS AN UPPER LOW
TRACKS INTO THE NORTHEASTERN U.S., LEADING TO SUPPRESSION OF THE
RIDGE AND MORE NORTHWESTERLY FLOW ALOFT. THIS WILL DECREASE
TEMPERATURES AND LEAD TO A SLIGHT UPTICK IN RAIN CHANCES,
POTENTIALLY OUTSIDE OF THE MOUNTAINS. MOISTURE WILL INCREASE BY
SATURDAY, ALONG WITH A FRONTAL BOUNDARY DRIFTING DOWN FROM THE
NORTHEAST, FURTHER INCREASING CHANCES FOR SHOWERS AND STORMS. THE
FRONT WILL REMAIN NEAR OR JUST TO OUR EAST AS TROUGHING DIGS THROUGH
LABOR DAY. THIS WILL KEEP A MORE EASTWARD FOCUS ON ISOLATED SHOWERS
AND STORMS, BUT MOST PLACES WILL LIKELY STAY DRY. TEMPERATURES WILL
BE MODERATED LOWER IN THE 90S BUT STILL ABOVE NORMAL.
AVIATION
(06Z TAFS)
ISSUED AT 132 AM EDT WED SEP 2 2026
GIVEN MINIMAL CHANGE ON THE SYNOPTIC SCALE, HAVE FOLLOWED PREVIOUS
NIGHTS TRENDS FOR TRI FOG FORECAST. OTHERWISE, VFR CONDITIONS
WITH LIGHT AND VARIABLE WINDS WILL PREVAIL THROUGH THE PERIOD.
PRELIMINARY POINT TEMPS/POPS
CHATTANOOGA AIRPORT, TN 98 76 99 75 / 0 0 0 0
KNOXVILLE MCGHEE TYSON AIRPORT, TN 96 74 98 74 / 0 0 10 0
OAK RIDGE, TN 95 74 97 74 / 0 0 0 0
TRI CITIES AIRPORT, TN 93 70 95 71 / 0 0 0 0
MRX WATCHES/WARNINGS/ADVISORIES
NC...NONE.
TN...HEAT ADVISORY FROM 1 PM EDT /NOON CDT/ THIS AFTERNOON TO 8 PM
EDT /7 PM CDT/ THIS EVENING FOR BLEDSOE-BRADLEY-HAMILTON-
LOUDON-MARION-MCMINN-MEIGS-NORTHWEST MONROE-RHEA-ROANE-
SEQUATCHIE-WEST POLK.
VA...NONE.
DISCUSSION...BW
AVIATION...KRS
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