320  
FXUS64 KMRX 090641  
AFDMRX  
 
AREA FORECAST DISCUSSION  
NATIONAL WEATHER SERVICE MORRISTOWN TN  
241 AM EDT TUE JUN 9 2026  
   
..NEW DISCUSSION  
 
   
KEY MESSAGES  
 
UPDATED AT 240 AM EDT TUE JUN 9 2026  
 
- CHANCES FOR SHOWERS AND THUNDERSTORMS WILL CONTINUE EACH DAY  
THROUGH THE END OF THE FORECAST PERIOD, AND SOME STORMS MAY CONTAIN  
VERY HEAVY RAINFALL.  
 
- PERSISTENT MUGGINESS AND INCREASED HEAT EACH DAY UNTIL A COLD  
FRONT ARRIVES SOMETIME BETWEEN FRIDAY AND SATURDAY.  
 
 
   
DISCUSSION  
 
ISSUED AT 240 AM EDT TUE JUN 9 2026  
 
UNSETTLED WEATHER PATTERN CONTINUES WITH CHANCES OF SHOWERS AND  
THUNDERSTORMS EACH DAY PRETTY MUCH THROUGH THE ENTIRE FORECAST  
PERIOD. SW-W FLOW WILL ALSO PERSIST UNTIL A COLD FRONT THE END OF  
THE WEEK BRINGS A BRIEF BOUT OF RELIEF. ALTHOUGH PARAMETERS AREN'T  
AS STRONG TODAY FOR A WIDESPREAD FLOOD WATCH ISSUANCE, THAT DOESN'T  
MEAN ISOLATED FLASH FLOODING COULDN'T STILL OCCUR. PWS ON 00Z HREF  
AND RRFS DEPICT VALUES UNDER 2 INCHES, WHEN YESTERDAY SHOWED  
MULTIPLE 2 INCH AND ABOVE VALUES, WAY ABOVE CLIMO NORMS. A MRGL TO A  
SLGT RISK OF EXCESSIVE RAINFALL FROM WPC, MUCH LIKE YESTERDAY, WILL  
COVER THE FORECAST AREA TODAY. A STATIONARY BOUNDARY AND SHORTWAVE  
WILL CONTINUE TO SUPPORT DEVELOPMENT INTO TODAY.  
 
AFTER TODAY, TEMPERATURES WILL RISE A COUPLE OF DEGREES EACH DAY  
WITH 70S DEW POINTS STICKING AROUND. RIDGING WILL BUILD IN BEHIND  
THE SHORTWAVE, THUS, SHOWERS AND STORMS MAY BE OF THE TYPICAL SUMMER  
VARIETY WITH BETTER CHANCES OVER THE TERRAIN AND A DYING DOWN IN  
ACTIVITY DURING OVERNIGHT HOURS. STILL CANNOT RULE OUT ISOLATED  
FLASH FLOODING GIVEN THE ENVIRONMENT.  
 
A COLD FRONT AT THE START OF THE WEEKEND MAY BRING A SUBTLE AND  
TEMPORARY RELIEF OF HIGHS IN THE VALLEY MAXING NEAR 90 AND DEW  
POINTS IN THE LOW TO MID 70S IN THE COMING DAYS. DRY WEATHER DOESN'T  
APPEAR WILL FOLLOW THE FRONT, WITH DAILY PRECIPITATION CONTINUING,  
ACCORDING TO MODELS.  
 
 
   
AVIATION  
 
(06Z TAFS)  
ISSUED AT 145 AM EDT TUE JUN 9 2026  
 
ADDITIONAL RAIN SHOWERS ARE EXPECTED HEADING INTO THE MORNING  
HOURS, ESPECIALLY AROUND CHA. REDUCTIONS TO MVFR ARE POSSIBLE AT  
ALL SITES BUT MOST LIKELY AT CHA. ADDITIONAL RAIN IS EXPECTED  
DURING THE AFTERNOON HOURS, BUT VFR WILL BE MORE PREVALENT OUTSIDE  
OF RAINFALL. WINDS WILL BE GENERALLY FROM A SOUTHWESTERLY  
DIRECTION AT 10 KTS OR LESS.  
 
 
   
PRELIMINARY POINT TEMPS/POPS  
 
CHATTANOOGA AIRPORT, TN 87 70 89 71 / 60 20 20 0  
KNOXVILLE MCGHEE TYSON AIRPORT, TN 86 70 88 71 / 70 30 50 10  
OAK RIDGE, TN 84 69 88 70 / 80 40 50 10  
TRI CITIES AIRPORT, TN 84 67 85 68 / 90 50 80 30  
 
 
   
MRX WATCHES/WARNINGS/ADVISORIES  
 
NC...NONE.  
TN...NONE.  
VA...NONE.  
 
 
 
 
DISCUSSION...KS  
AVIATION...BW  
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