421
FNUS74 KMRX 191101
FWSMRX
SPOT FORECAST FOR GRANDFATHER KNOB RX...USFS
NATIONAL WEATHER SERVICE MORRISTOWN TN
701 AM EDT THU MAR 19 2026
FORECAST IS BASED ON IGNITION TIME OF 0700 EDT ON MARCH 20.
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
WARMING TREND TO CONTINUE INTO THE WEEKEND WITH THE WARMEST WEATHER
ON SUNDAY. ONLY LOW CHANCES FOR RAIN OVER THE NEXT WEEK. A COLD
FRONT ON MONDAY TO COOL TEMPERATURES BACK DOWN INTO SEASONABLE LATE
MARCH WEATHER.
FRIDAY
SKY/WEATHER.........MOSTLY SUNNY (35-45 PERCENT) THEN BECOMING
PARTLY SUNNY (55-65 PERCENT).
MAX TEMPERATURE.....AROUND 65.
MIN HUMIDITY........48 PERCENT.
WIND (20 FT)........LIGHT WINDS BECOMING SOUTHWEST 5 TO 6 MPH LATE
IN THE MORNING.
MIXING HEIGHT.......4300 FT AGL.
TRANSPORT WINDS.....SOUTHWEST 7 TO 13 MPH INCREASING TO 13 TO 18
MPH LATE IN THE MORNING.
RAINFALL AMOUNT.....0.00 INCHES.
TIME (EDT) 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM 6PM 7PM
SKY (%).........42 44 28 34 39 43 46 50 54 59 63 64 66
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
TEMP............40 39 44 49 55 59 62 63 65 65 65 64 62
RH..............85 89 82 74 64 57 54 52 48 48 48 50 56
20 FT WIND DIR..S S S SW SW SW SW SW SW SW SW SW SW
20 FT WIND SPD..1 2 2 2 3 4 5 6 6 6 6 6 5
20 FT WIND GUST.4 4 5 6 6 8 10 11 12 12 12 11 10
MIX HGT (KFT)...0.9 0.9 1.3 1.8 2.4 3.1 3.7 4.1 4.3 4.1 3.8 3.0 2.1
TRANSP WIND DIR.S S S SW SW SW W W W W W SW SW
TRANSP WIND SPD.7 7 7 8 10 13 15 17 18 18 17 15 13
FRIDAY NIGHT
SKY/WEATHER.........MOSTLY CLOUDY (65-75 PERCENT). SLIGHT CHANCE OF
RAIN SHOWERS IN THE EVENING. SLIGHT CHANCE OF
THUNDERSTORMS LATE IN THE EVENING.
MIN TEMPERATURE.....AROUND 52.
MAX HUMIDITY........93 PERCENT.
WIND (20 FT)........LIGHT WINDS. GUSTY AND ERRATIC WINDS EXPECTED
NEAR THUNDERSTORMS LATE IN THE EVENING.
MIXING HEIGHT.......1200 FT AGL.
TRANSPORT WINDS.....SOUTHWEST 10 TO 17 MPH.
RAINFALL AMOUNT.....0.00 INCHES.
TIME (EDT) 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM 6AM 7AM
SKY (%).........67 66 65 64 65 65 66 67 67 68 72 75
WEATHER COV.....SCH SCH SCH SCH SCH SCH
WEATHER TYPE....RW RW RW RW RW RW
TSTM COV........ SCH SCH SCH
TEMP............60 59 57 56 55 54 54 54 54 54 53 52
RH..............60 62 69 72 74 80 80 80 83 83 86 89
20 FT WIND DIR..SW SW SW SW SW SW SW SW W W W SW
20 FT WIND SPD..4 4 4 4 4 4 4 4 4 4 4 3
20 FT WIND GUST.10 10 10 10 10 11 11 11 11 10 10 8
MIX HGT (KFT)...1.5 1.3 1.4 1.6 1.7 1.7 1.7 1.6 1.5 1.4 1.3 1.2
TRANSP WIND DIR.SW SW SW SW SW SW SW SW W W W SW
TRANSP WIND SPD.10 12 13 15 16 17 17 16 15 13 12 10
SATURDAY
SKY/WEATHER.........PARTLY SUNNY (50-60 PERCENT) THEN BECOMING
SUNNY (20-30 PERCENT). SLIGHT CHANCE OF RAIN
SHOWERS IN THE AFTERNOON.
MAX TEMPERATURE.....AROUND 69.
MIN HUMIDITY........59 PERCENT.
WIND (20 FT)........LIGHT WINDS BECOMING WEST 5 TO 6 MPH IN THE
LATE MORNING AND EARLY AFTERNOON, THEN BECOMING
LIGHT LATE IN THE AFTERNOON.
MIXING HEIGHT.......4100 FT AGL.
TRANSPORT WINDS.....WEST 7 TO 13 MPH.
RAINFALL AMOUNT.....0.00 INCHES.
TIME (EDT) 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM 6PM 7PM
SKY (%).........79 77 76 74 70 65 61 51 41 31 27 23
WEATHER COV..... SCH SCH SCH SCH SCH SCH
WEATHER TYPE.... RW RW RW RW RW RW
TSTM COV........
TEMP............52 54 56 59 61 64 66 67 68 68 68 67
RH..............93 90 90 83 78 70 65 63 59 59 59 59
20 FT WIND DIR..SW SW W W W W W W W W W W
20 FT WIND SPD..3 3 4 5 6 6 6 6 6 5 4 3
20 FT WIND GUST.8 8 8 10 10 11 11 11 11 10 10 7
MIX HGT (KFT)...1.3 1.5 2.0 2.4 2.8 3.2 3.5 3.9 4.1 4.0 3.3 2.3
TRANSP WIND DIR.SW SW W W W W W W W W W SW
TRANSP WIND SPD.10 12 12 13 13 12 10 10 10 10 8 7
FORECASTER...JEANIE MCDERMOTT
REQUESTED BY...MAXWELL WHITE
TYPE OF REQUEST...PRESCRIBED
.TAG 2606340.0/MRX
.DELDT 03/19/26
.FORMATTERVERSION 2.0.0
.EMAIL MAXWELL.WHITE@USDA.GOV
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