714
FNUS74 KMRX 220927
FWSMRX
SPOT FORECAST FOR GRANDFATHER KNOB...USFS
NATIONAL WEATHER SERVICE MORRISTOWN TN
527 AM EDT SUN MAR 22 2026
FORECAST IS BASED ON IGNITION TIME OF 0600 EDT ON MARCH 22.
IF CONDITIONS BECOME UNREPRESENTATIVE,CONTACT THE NATIONAL WEATHER
SERVICE...AT 1-800-697-0075. IF POSSIBLE, PLEASE PROVIDE FEEDBACK
FOR EVERY SPOT FORECAST REQUEST.
DISCUSSION
DRY WEATHER IS FORECAST FOR TODAY AND TONIGHT. A WEAK COLD FRONT
WILL MOVE THROUGH DURING THE OVERNIGHT HOURS TONIGHT, INCREASING
THE CHANCE OF SHOWERS AND POSSIBLE THUNDERSTORMS MONDAY MORNING
INTO THE EARLY AFTERNOON. A WIND SHIFT WILL OCCUR FOLLOWING THE
COLD FRONT MONDAY MORNING. CURRENT WEST TO SOUTHWEST FLOW WILL
EVENTUALLY TURN OUT OF THE NORTH.
TODAY
SKY/WEATHER.........MOSTLY SUNNY (35-45 PERCENT).
MAX TEMPERATURE.....AROUND 78.
MIN HUMIDITY........42 PERCENT.
WIND (20 FT)........LIGHT WINDS BECOMING WEST 5 TO 8 MPH WITH GUSTS
TO AROUND 16 MPH IN THE LATE MORNING AND
AFTERNOON.
MIXING HEIGHT.......4400 FT AGL.
TRANSPORT WINDS.....WEST 9 TO 17 MPH INCREASING TO 20 TO 21 MPH
LATE IN THE AFTERNOON.
RAINFALL AMOUNT.....0.00 INCHES.
TIME (EDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........62 62 57 41 39 41 31 34 43 31 20 18
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
TEMP............58 58 57 60 63 67 69 72 75 76 77 77
RH..............80 83 90 84 78 73 68 61 54 50 45 43
20 FT WIND DIR..SW SW SW SW SW SW W W W W W W
20 FT WIND SPD..4 4 4 4 5 5 6 6 7 7 8 7
20 FT WIND GUST.8 10 10 10 10 11 13 13 14 16 16 14
MIX HGT (KFT)...1.2 1.2 1.2 1.6 2.0 2.6 2.9 3.6 4.2 4.4 4.4 4.2
TRANSP WIND DIR.W SW W W W W W W W W W W
TRANSP WIND SPD.10 10 9 13 14 15 16 17 20 20 21 21
TONIGHT
SKY/WEATHER.........PARTLY CLOUDY (25-35 PERCENT) THEN BECOMING
MOSTLY CLOUDY (70-80 PERCENT). SLIGHT CHANCE OF
SHOWERS AFTER 3 AM. CHANCE OF SHOWERS AND
SLIGHT CHANCE OF THUNDERSTORMS EARLY IN THE
MORNING.
MIN TEMPERATURE.....AROUND 53.
MAX HUMIDITY........96 PERCENT.
WIND (20 FT)........SOUTHWEST WINDS 5 TO 8 MPH. GUSTS UP TO 21 MPH
OVERNIGHT. GUSTY AND ERRATIC WINDS EXPECTED
NEAR THUNDERSTORMS EARLY IN THE MORNING.
MIXING HEIGHT.......1500 FT AGL.
TRANSPORT WINDS.....WEST 13 TO 21 MPH.
RAINFALL AMOUNT.....0.03 INCHES.
TIME (EDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........17 17 25 19 18 21 26 36 41 65 76 86
WEATHER COV..... SCH CHC
WEATHER TYPE.... RW RW
TSTM COV........ SCH
TEMP............78 76 73 69 69 67 67 66 65 65 64 63
RH..............42 43 48 57 57 59 59 63 65 68 73 75
20 FT WIND DIR..W SW SW SW SW SW SW SW SW SW SW W
20 FT WIND SPD..6 6 5 5 5 5 6 6 7 7 8 8
20 FT WIND GUST.14 14 14 12 13 14 14 16 16 16 17 17
MIX HGT (KFT)...3.8 1.8 1.5 1.5 1.8 1.8 1.9 2.0 1.8 2.0 2.2 1.8
TRANSP WIND DIR.W W SW SW SW SW W W W W W W
TRANSP WIND SPD.21 14 13 13 15 18 17 18 17 18 20 18
MONDAY
SKY/WEATHER.........MOSTLY CLOUDY (75-85 PERCENT) THEN BECOMING
MOSTLY SUNNY (25-35 PERCENT). CHANCE OF RAIN
SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS
EARLY IN THE MORNING, THEN SLIGHT CHANCE OF
RAIN SHOWERS EARLY IN THE MORNING.
MAX TEMPERATURE.....AROUND 60.
MIN HUMIDITY........37 PERCENT.
WIND (20 FT)........WEST WINDS 7 TO 8 MPH WITH GUSTS TO AROUND 16
MPH SHIFTING TO THE NORTH AROUND 6 MPH EARLY IN
THE MORNING. GUSTY AND ERRATIC WINDS EXPECTED
NEAR THUNDERSTORMS EARLY IN THE MORNING.
MIXING HEIGHT.......4500 FT AGL.
TRANSPORT WINDS.....WEST 17 TO 18 MPH SHIFTING TO THE NORTH 13 TO
18 MPH EARLY IN THE MORNING.
RAINFALL AMOUNT.....0.03 INCHES.
TIME (EDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........93 88 89 88 84 80 62 44 26 21 16 11
WEATHER COV.....CHC CHC SCH SCH SCH SCH SCH SCH
WEATHER TYPE....RW RW RW RW RW RW RW RW
TSTM COV........SCH SCH
TEMP............60 58 57 54 55 57 57 58 58 58 59 58
RH..............81 90 86 96 90 75 67 60 53 47 42 40
20 FT WIND DIR..W W N N N N N N N N N N
20 FT WIND SPD..8 7 6 6 6 6 6 6 6 6 6 6
20 FT WIND GUST.16 14 14 14 14 13 13 12 12 12 12 12
MIX HGT (KFT)...2.1 1.8 2.0 2.1 2.4 2.7 3.1 3.5 3.8 4.3 4.5 4.4
TRANSP WIND DIR.W W N N N N N N N N N N
TRANSP WIND SPD.18 17 17 13 13 15 15 15 15 16 18 18
FORECASTER...KERRIE SIMMONS
REQUESTED BY...MAXWELL WHITE
TYPE OF REQUEST...PRESCRIBED
.TAG 2606875.2/MRX
.DELDT 03/22/26
.FORMATTERVERSION 2.0.0
.EMAIL MAXWELL.WHITE@USDA.GOV
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page