267  
FNUS54 KOHX 181018  
FWFOHX  
 
FIRE WEATHER PLANNING FORECAST FOR MIDDLE TENNESSEE  
NATIONAL WEATHER SERVICE NASHVILLE TN  
518 AM CDT FRI AUG 18 2017  
   
DISCUSSION
 
 
FRONTAL BOUNDARY TO PUSH THROUGH THE MID STATE TODAY. A FEW SHOWERS  
AND THUNDERSTORMS WILL OCCUR ALONG THE PLATEAU BUT THE PRECIP SHOULD  
END BY MID TO LATE MORNING. IN THE WAKE OF THE BOUNDARY, DRIER AIR  
WILL INFILTRATE THE AREA ALONG WITH MOSTLY CLEAR SKIES THROUGH  
SUNDAY. IN THE EXT FCST, MOISTURE WILL GRADUALLY RETURN ALONG WITH  
SHOWER AND TSTM CHANCES BY MID WEEK.  
 
TNZ501-191215-  
HIGHLAND RIM DISTRICT - NORTH-  
INCLUDING THE COUNTIES OF CHEATHAM, DAVIDSON, DICKSON, HOUSTON,  
HUMPHREYS, MONTGOMERY, ROBERTSON, RUTHERFORD, STEWART, SUMNER,  
WILLIAMSON, AND WILSON  
518 AM CDT FRI AUG 18 2017  
 
TODAY TONIGHT SAT  
 
CLOUD COVER PCLDY MCLEAR MCLEAR  
TEMP (24H TREND) 88 (-1) 66 (-6) 90  
RH % (24H TREND) 48 (-16) 89 (-10) 51  
AM 20FT WND (MPH) W 3-7 LGT/VAR  
PM 20FT WND (MPH) NW 4-8 LGT/VAR LGT/VAR  
PRECIP CHANCE (%) 0 0 0  
PRECIP TYPE NONE NONE NONE  
PRECIP AMOUNT (IN) 0.00 0.00 0.00  
PRECIP DUR (HR)  
PRECIP BEGIN  
PRECIP END  
MIXING HGT (M-MSL) 1900 2300  
MIXING HGT (FT-MSL) 6300 7600  
TRANSPORT WND (M/S) NW 6 W 5  
TRANSPORT WND (MPH) NW 13 W 10  
DISPERSION INDEX 36 1 26  
LAL 1 1 1  
HAINES INDEX 4 3 2  
MAXIMUM LVORI 10 0 0  
RH RECOVERY POOR  
 
REMARKS...NONE.  
   
FORECAST FOR DAYS 3 THROUGH 7
 
 
   
SATURDAY NIGHT
 
MOSTLY CLEAR. LOWS IN THE UPPER 60S. SOUTHWEST  
WINDS UP TO 5 MPH.    
SUNDAY
 
MOSTLY SUNNY. HIGHS IN THE LOWER 90S. MINIMUM RH  
49 PERCENT. EAST WINDS UP TO 5 MPH.    
SUNDAY NIGHT
 
MOSTLY CLEAR. LOWS IN THE LOWER 70S. EAST WINDS UP  
TO 5 MPH.    
MONDAY
 
PARTLY SUNNY. HIGHS IN THE LOWER 90S. MINIMUM RH  
55 PERCENT. SOUTH WINDS UP TO 5 MPH.    
TUESDAY
 
PARTLY CLOUDY. A 40 PERCENT CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS IN THE LOWER 70S. HIGHS AROUND 90. MINIMUM RH  
59 PERCENT. SOUTHWEST WINDS UP TO 5 MPH.    
WEDNESDAY
 
MOSTLY CLOUDY WITH SHOWERS AND THUNDERSTORMS LIKELY.  
LOWS IN THE LOWER 70S. HIGHS IN THE MID 80S. MINIMUM RH 64 PERCENT.  
NORTHWEST WINDS UP TO 5 MPH. CHANCE OF PRECIPITATION 70 PERCENT.    
THURSDAY
 
PARTLY CLOUDY. LOWS IN THE MID 60S. HIGHS IN THE LOWER  
80S. MINIMUM RH 53 PERCENT. NORTHEAST WINDS UP TO 5 MPH.  
 

 
 
TNZ502-191215-  
HIGHLAND RIM DISTRICT - SOUTH-  
INCLUDING THE COUNTIES OF BEDFORD, GILES, HARDIN, HICKMAN, LAWRENCE,  
LEWIS, LINCOLN, MARSHALL, MAURY, MOORE, PERRY, AND WAYNE  
518 AM CDT FRI AUG 18 2017  
 
TODAY TONIGHT SAT  
 
CLOUD COVER PCLDY MCLEAR MCLEAR  
TEMP (24H TREND) 89 (-1) 66 (-6) 90  
RH % (24H TREND) 49 (-13) 89 (-10) 51  
AM 20FT WND (MPH) W 3-7 LGT/VAR  
PM 20FT WND (MPH) NW 4-8 LGT/VAR LGT/VAR  
PRECIP CHANCE (%) 0 0 0  
PRECIP TYPE NONE NONE NONE  
PRECIP AMOUNT (IN) 0.00 0.00 0.00  
PRECIP DUR (HR)  
PRECIP BEGIN  
PRECIP END  
MIXING HGT (M-MSL) 1800 2200  
MIXING HGT (FT-MSL) 5900 7300  
TRANSPORT WND (M/S) NW 6 W 4  
TRANSPORT WND (MPH) NW 13 W 8  
DISPERSION INDEX 36 1 22  
LAL 1 1 1  
HAINES INDEX 4 3 2  
MAXIMUM LVORI 7 0 0  
RH RECOVERY MODERATE  
 
REMARKS...NONE.  
   
FORECAST FOR DAYS 3 THROUGH 7
 
 
   
SATURDAY NIGHT
 
MOSTLY CLEAR. LOWS AROUND 70. SOUTHEAST WINDS UP  
TO 5 MPH.    
SUNDAY
 
MOSTLY SUNNY. HIGHS IN THE LOWER 90S. MINIMUM RH  
50 PERCENT. SOUTHEAST WINDS UP TO 5 MPH.    
SUNDAY NIGHT
 
MOSTLY CLEAR. LOWS IN THE LOWER 70S. EAST WINDS UP  
TO 5 MPH.    
MONDAY
 
PARTLY SUNNY WITH A 20 PERCENT CHANCE OF SHOWERS AND  
THUNDERSTORMS. HIGHS IN THE LOWER 90S. MINIMUM RH 55 PERCENT. SOUTH  
WINDS UP TO 5 MPH.    
TUESDAY
 
PARTLY CLOUDY. A 50 PERCENT CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS IN THE LOWER 70S. HIGHS IN THE UPPER 80S.  
MINIMUM RH 60 PERCENT. SOUTHWEST WINDS UP TO 5 MPH.    
WEDNESDAY
 
MOSTLY CLOUDY. SHOWERS AND THUNDERSTORMS LIKELY. LOWS  
IN THE LOWER 70S. HIGHS IN THE UPPER 80S. MINIMUM RH 63 PERCENT.  
WEST WINDS UP TO 5 MPH. CHANCE OF PRECIPITATION 70 PERCENT.    
THURSDAY
 
PARTLY CLOUDY. LOWS IN THE UPPER 60S. HIGHS IN THE MID  
80S. MINIMUM RH 54 PERCENT. NORTH WINDS UP TO 5 MPH.  
 

 
 
TNZ400-191215-  
CUMBERLAND DISTRICT - NORTH-  
INCLUDING THE COUNTIES OF CANNON, CLAY, CUMBERLAND, DEKALB,  
FENTRESS, JACKSON, MACON, OVERTON, PICKETT, PUTNAM, SMITH,  
TROUSDALE, WARREN, AND WHITE  
518 AM CDT FRI AUG 18 2017  
 
TODAY TONIGHT SAT  
 
CLOUD COVER PCLDY MCLEAR MCLEAR  
TEMP (24H TREND) 85 (-3) 66 (-6) 88  
RH % (24H TREND) 56 (-6) 87 (-11) 49  
AM 20FT WND (MPH) W 3-7 LGT/VAR  
PM 20FT WND (MPH) W 4-8 LGT/VAR LGT/VAR  
PRECIP CHANCE (%) 20 0 0  
PRECIP TYPE TSTMS NONE NONE  
PRECIP AMOUNT (IN) 0.02 0.00 0.00  
PRECIP DUR (HR) 1  
PRECIP BEGIN 6 AM  
PRECIP END 11 AM  
MIXING HGT (M-MSL) 2000 2200  
MIXING HGT (FT-MSL) 6500 7300  
TRANSPORT WND (M/S) W 6 W 6  
TRANSPORT WND (MPH) W 14 W 13  
DISPERSION INDEX 44 1 28  
LAL 3 1 1  
HAINES INDEX 3 3 2  
MAXIMUM LVORI 3 1 1  
RH RECOVERY POOR  
 
REMARKS...NONE.  
   
FORECAST FOR DAYS 3 THROUGH 7
 
 
   
SATURDAY NIGHT
 
MOSTLY CLEAR. LOWS IN THE UPPER 60S. SOUTH WINDS  
UP TO 5 MPH.    
SUNDAY
 
MOSTLY SUNNY. HIGHS IN THE UPPER 80S. MINIMUM RH  
51 PERCENT. SOUTH WINDS UP TO 5 MPH.    
SUNDAY NIGHT
 
MOSTLY CLEAR. LOWS IN THE UPPER 60S. EAST WINDS UP  
TO 5 MPH.    
MONDAY
 
PARTLY SUNNY WITH A 20 PERCENT CHANCE OF SHOWERS AND  
THUNDERSTORMS. HIGHS IN THE UPPER 80S. MINIMUM RH 56 PERCENT.  
SOUTHWEST WINDS UP TO 5 MPH.    
TUESDAY
 
PARTLY CLOUDY. A 40 PERCENT CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS IN THE LOWER 70S. HIGHS IN THE UPPER 80S.  
MINIMUM RH 61 PERCENT. SOUTHWEST WINDS UP TO 5 MPH.    
WEDNESDAY
 
MOSTLY CLOUDY. SHOWERS AND THUNDERSTORMS LIKELY. LOWS  
IN THE LOWER 70S. HIGHS IN THE MID 80S. MINIMUM RH 68 PERCENT. WEST  
WINDS UP TO 5 MPH. CHANCE OF PRECIPITATION 70 PERCENT.    
THURSDAY
 
PARTLY CLOUDY. A 40 PERCENT CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS IN THE MID 60S. HIGHS IN THE LOWER 80S. MINIMUM  
RH 57 PERCENT. NORTH WINDS UP TO 5 MPH.  
 

 
 
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