609  
FXUS64 KMRX 112312  
AFDMRX  
 
AREA FORECAST DISCUSSION  
NATIONAL WEATHER SERVICE MORRISTOWN TN  
712 PM EDT SUN OCT 11 2026  
   
..NEW AVIATION  
 
   
KEY MESSAGES  
 
UPDATED AT 708 PM EDT SUN OCT 11 2026  
 
- A FEW REMAINING SHOWERS AROUND THROUGH AT LEAST TOMORROW  
MORNING, BUT NO SIGNIFICANT RAIN NOR WIND EXPECTED.  
 
- DRY WEATHER WITH INCREASING WARMTH THROUGH THURSDAY.  
TEMPERATURES COULD NEAR 15 DEGREES ABOVE NORMAL.  
 
- NEXT WEEKEND IS OUR NEXT CHANCE OF RAIN WITH A POTENTIALLY  
STRONG COLD FRONT. MUCH COOLER TEMPERATURES OVER THE WEEKEND.  
 
 
   
DISCUSSION  
 
ISSUED AT 140 PM EDT SUN OCT 11 2026  
 
THE CIRCULATION OF WHAT'S LEFT OF ISAIAS IS CENTERED OVER SOUTHERN  
WV AND WILL CONTINUE LIFTING TO THE NORTHEAST. SOUTHERLY MOVING  
SHOWERS THIS MORNING WILL BECOME MORE NORTHWESTERLY AS MOISTURE  
WRAPS AROUND THE BACK SIDE OF THE LOW. PRECIPITATION CHANCES WILL  
LINGER INTO EARLY TOMORROW FOR AREAS THAT ARE TYPICALLY PRONE TO  
UPSLOPE NORTHWESTERLY FLOW. ONLY LIGHT ACCUMULATION AMOUNTS  
EXPECTED.  
 
MOSTLY CLOUDY SKIES ARE EVIDENT ON VISIBLE SATELLITE IMAGERY THIS  
AFTERNOON. THE EDGE OF THE CLOUD SHIELD LAYS NEAR HUNTSVILLE,  
ALONG A LINE FROM NNW TO SSE. EXPECT CLEARING FROM ABOUT SW TO NE  
AS WE HEAD INTO THE NIGHT AND TOMORROW MORNING. WINDS MAY BE UP  
JUST ENOUGH TO KEEP FOG FROM FORMING OVERNIGHT. SOUTHWESTERLY WIND  
GUSTS UP THE VALLEY TODAY WILL TRANSLATE AND CONFINE TO THE  
NORTHEAST AND HIGHER TERRAIN INTO TOMORROW AS SURFACE HIGH  
PRESSURE LIFTS UP FROM THE GULF, KEEPING THE TIGHTER PRESSURE  
GRADIENT.  
 
FOR THE COMING WEEK AHEAD, SURFACE HIGH PRESSURE WILL TAKE HOLD  
OVER THE SOUTHEAST UNDERNEATH A STRENGTHENING UPPER RIDGE. 500 MB  
HEIGHTS COULD REACH 593 DAM OR SO BY THE MIDDLE OF THE WEEK. WHAT  
THIS MEANS FOR US IS DRY WEATHER THROUGH APPROXIMATELY THURSDAY  
WITH TEMPERATURES INCREASING EACH DAY. CHATTANOOGA, FOR EXAMPLE,  
MAY SEE TEMPERATURES REAL CLOSE TO 90 WEDNESDAY AND THURSDAY, WHEN  
NORMALLY THEY AVERAGE 75 FOR HIGHS IN MID OCTOBER.  
 
A CLOSED LOW OVER THE WEST THAT MAY EVENTUALLY BECOME PART OF A  
DEEPENING TROUGH OVER NORTHERN TIER OF THE COUNTRY, WILL BE OUR  
NEXT BEST CHANCE OF RAIN WHEN A POTENTIALLY STRONG COLD FRONT  
SWEEPS THROUGH NEXT WEEKEND. THIS WILL BRING A MARKED COOL DOWN  
WITH HIGHS DROPPING INTO THE 60S NEXT SATURDAY. ALTHOUGH JUST  
OUTSIDE THE FORECAST PERIOD, SUNDAY MORNING LOWS MAY BRING THE  
SEASON'S FIRST FREEZING TEMPERATURES TO NORTHEASTERN PARTS OF THE  
FORECAST AREA (NE TN, SW VA).  
 
 
   
AVIATION  
 
(00Z TAFS)  
ISSUED AT 708 PM EDT SUN OCT 11 2026  
 
MVFR WILL CONTINUE AT TYS AND TRI WITH SOME REDUCTION TO IFR AT  
TRI EXPECTED. A FEW SHOWERS WILL LINGER FOR THE NEXT FEW HOURS,  
BUT OTHERWISE WESTERLY TO NORTHWESTERLY FLOW WILL GRADUALLY  
DECREASE THROUGH THE NIGHT INTO THE EARLY MORNING. PATCHY FOG IS  
POSSIBLE, MAINLY AROUND TRI. THEN, LIGHTER WINDS AND DECREASING  
CLOUD COVER ARE EXPECTED THROUGH THE DAY.  
 
 
   
PRELIMINARY POINT TEMPS/POPS  
 
CHATTANOOGA AIRPORT, TN 57 85 60 87 / 0 0 0 0  
KNOXVILLE MCGHEE TYSON AIRPORT, TN 60 81 60 84 / 10 0 0 0  
OAK RIDGE, TN 58 82 58 84 / 10 0 0 0  
TRI CITIES AIRPORT, TN 60 77 55 81 / 60 10 0 0  
 
 
   
MRX WATCHES/WARNINGS/ADVISORIES  
 
NC...NONE.  
TN...NONE.  
VA...NONE.  
 
 
 
 
DISCUSSION...KS  
AVIATION...BW  
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