539
FOUS54 KMRX 201827
PFMMRX
POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE MORRISTOWN TN
227 PM EDT WED MAY 20 2026
TNZ017-210800-
TRI CITIES AIRPORT-SULLIVAN TN
36.50N 82.41W ELEV. 1536 FT
227 PM EDT WED MAY 20 2026
DATE 05/20/26 THU 05/21/26 FRI 05/22/26 SAT
EDT 3HRLY 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08
UTC 3HRLY 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12
MIN/MAX 62 79 61 80 61
TEMP 88 82 70 67 64 64 71 76 76 73 67 65 63 63 72 76 79 75 67 65 63 63
DEWPT 61 64 65 64 63 64 67 68 68 66 64 63 61 62 66 68 68 65 63 62 61 63
RH 40 55 84 90 97100 87 76 76 79 90 93 93 97 81 76 69 71 87 90 93100
WIND DIR W W NE NE NE NE NE NW SE E E E E E SE SE SE SE SE SE SE SE
WIND SPD 4 3 1 0 0 0 1 3 4 4 2 3 3 4 6 8 8 9 6 4 3 3
CLOUDS SC B1 B2 B2 OV B2 B2 OV OV OV B2 B2 OV OV B2 B2 B1 B1 B2 B2 B2 B2
POP 12HR 70 90 50 80 90
QPF 12HR 0.19 0.30 0.03 0.06 0.20
RAIN SHWRS S L L C S C L D D C S S L L D D L L D D D
TSTMS S C S C C C S S C C S
DATE 05/23 SUN 05/24/26 MON 05/25/26 TUE 05/26/26 WED 05/27/26
EDT 6HRLY 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20
UTC 6HRLY 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00
MAX/MIN 81 61 82 61 82 61 83 61 82
TEMP 77 76 65 63 79 77 66 63 78 77 66 63 80 78 65 63 79 78
DEWPT 70 68 63 63 69 68 64 63 70 68 64 63 69 68 64 63 68 67
PWIND DIR S S SW S SW S SW E W
WIND CHAR LT LT LT LT LT LT LT LT LT
AVG CLOUDS B2 B2 B2 B2 B2 B2 B2 B2 B2 B1 B2 B1 B2 B1 B2 B1 B1 B1
POP 12HR 100 50 80 40 90 40 80 50 70
RAIN SHWRS D D C S C D C C L D C C L D C C L L
TSTMS C C C S C S S C S S C S C
TNZ071-210800-
KNOXVILLE MCGHEE TYSON AIRPORT-BLOUNT TN
35.80N 83.98W ELEV. 979 FT
227 PM EDT WED MAY 20 2026
DATE 05/20/26 THU 05/21/26 FRI 05/22/26 SAT
EDT 3HRLY 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08
UTC 3HRLY 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12
MIN/MAX 66 81 64 82 66
TEMP 87 79 72 70 68 67 73 79 79 76 71 68 66 66 75 80 82 78 72 70 68 68
DEWPT 66 68 68 66 66 65 68 70 70 70 67 65 64 65 69 72 71 71 68 65 65 66
RH 50 69 87 87 93 93 84 74 74 82 87 90 93 97 82 77 69 79 87 84 90 93
WIND DIR SW SW NE N N NE E W SE NE NE NE E N S SW S S S S S SW
WIND SPD 6 3 1 0 0 1 2 2 2 3 2 1 1 0 2 5 6 4 3 3 3 3
CLOUDS SC B2 B2 B2 OV OV B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B1 B2 B2 B2 B2 B2
POP 12HR 70 90 50 90 100
QPF 12HR 0.13 0.34 0.03 0.24 0.65
RAIN SHWRS C L L C C C D D L C C C D D D D D D D D D
TSTMS C C S S C C S C C C C S S S
HEAT INDEX 84 86
MAX HEAT 90 83 84 86
DATE 05/23 SUN 05/24/26 MON 05/25/26 TUE 05/26/26 WED 05/27/26
EDT 6HRLY 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20
UTC 6HRLY 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00
MAX/MIN 81 64 83 65 82 65 83 65 84
TEMP 79 78 68 66 81 78 69 67 80 78 69 67 81 79 69 67 81 80
DEWPT 72 71 65 66 72 70 65 65 72 70 65 65 72 70 65 65 71 69
PWIND DIR SW S SW SW SW S SW SW SW
WIND CHAR LT LT LT LT LT LT LT LT LT
AVG CLOUDS B2 B2 B2 B2 B2 B2 B2 B2 B2 B1 B2 B2 B2 B1 B1 B1 B1 B1
POP 12HR 100 40 80 60 80 50 70 50 70
RAIN SHWRS D D C C L D L C L D C C L L C C C L
TSTMS C C S S C C S C C S C S S C
TNZ036-210800-
OAK RIDGE-ANDERSON TN
36.00N 84.24W ELEV. 913 FT
227 PM EDT WED MAY 20 2026
DATE 05/20/26 THU 05/21/26 FRI 05/22/26 SAT
EDT 3HRLY 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08
UTC 3HRLY 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12
MIN/MAX 64 81 63 81 64
TEMP 85 77 71 68 66 66 72 78 79 74 69 67 65 65 73 79 80 76 70 68 66 66
DEWPT 67 69 68 66 65 65 68 70 70 70 67 64 64 64 69 72 72 71 68 65 65 66
RH 55 76 90 93 97 97 87 76 74 87 93 90 97 97 87 79 77 85 93 90 97100
WIND DIR SW W NE NE NE NE E SW S NE NE NE NE E S S S SW S S SW SW
WIND SPD 5 2 1 1 1 1 1 2 3 2 2 2 1 1 2 5 6 3 3 2 3 4
CLOUDS B1 B2 B2 B2 OV OV OV B1 B2 OV B2 OV B2 OV B2 B2 B2 B2 B2 B2 OV B2
POP 12HR 70 80 60 90 100
QPF 12HR 0.18 0.21 0.03 0.32 0.77
RAIN SHWRS L C L C C C D C L C S L L D D D D D D D D D
TSTMS C C S C C S C C C C S S
HEAT INDEX 88 84
MAX HEAT 90 83 84
DATE 05/23 SUN 05/24/26 MON 05/25/26 TUE 05/26/26 WED 05/27/26
EDT 6HRLY 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20
UTC 6HRLY 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00
MAX/MIN 80 63 82 63 81 63 83 63 83
TEMP 78 77 67 65 80 77 68 66 78 77 68 65 80 78 68 65 81 78
DEWPT 72 71 65 65 73 71 65 66 72 71 65 65 72 71 65 65 72 70
PWIND DIR SW SW SW SW SW SW SW SW SW
WIND CHAR LT LT LT LT LT LT LT LT LT
AVG CLOUDS B2 B2 B2 B2 B2 B2 B2 OV B2 B1 B2 B2 B2 B1 B2 B1 B1 B1
POP 12HR 90 40 80 60 70 60 60 50 60
RAIN SHWRS D D C C C D L C L L C L C L C C L L
TSTMS S C S S C C S C C S C S S C
TNZ099-210800-
CHATTANOOGA AIRPORT-HAMILTON TN
35.03N 85.22W ELEV. 688 FT
227 PM EDT WED MAY 20 2026
DATE 05/20/26 THU 05/21/26 FRI 05/22/26 SAT
EDT 3HRLY 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08
UTC 3HRLY 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12
MIN/MAX 66 83 65 83 66
TEMP 83 78 72 70 68 67 74 80 81 77 71 69 67 67 75 81 82 78 71 69 68 68
DEWPT 70 70 69 67 65 65 68 71 71 71 69 66 65 65 69 72 72 71 69 66 65 65
RH 65 76 90 90 90 93 82 74 72 82 93 90 93 93 82 74 72 79 93 90 90 90
WIND DIR SW S N N N N N SW S E N N SE S S S S S S S S S
WIND SPD 4 2 1 0 0 0 0 2 2 2 0 0 1 3 8 11 10 6 6 6 6 5
WIND GUST 18
CLOUDS B2 B1 B2 B2 B2 OV B1 B1 B1 B2 B2 B2 B2 OV B2 B2 B1 B2 B2 B2 OV OV
POP 12HR 70 60 90 90 100
QPF 12HR 0.06 0.17 0.08 0.21 1.41
RAIN SHWRS L C C C S L C C L C C D D L L D D D D D D D
TSTMS C C S C C C S S S C C C S S S S
HEAT INDEX 87 83 85 85 87
MAX HEAT 90 83 86 85 87
DATE 05/23 SUN 05/24/26 MON 05/25/26 TUE 05/26/26 WED 05/27/26
EDT 6HRLY 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20
UTC 6HRLY 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00
MAX/MIN 82 65 83 66 83 66 84 65 85
TEMP 78 79 68 67 81 78 69 68 81 78 69 68 82 79 69 67 82 80
DEWPT 73 71 67 66 73 71 66 66 73 71 66 65 73 70 66 65 71 70
PWIND DIR S S S S S S S SE S
WIND CHAR LT LT LT LT LT LT LT LT LT
AVG CLOUDS B2 B2 B2 B2 B2 B2 B2 B2 B2 B1 B2 B2 B2 B1 B1 B1 B1 B1
POP 12HR 90 50 70 70 70 60 60 50 50
RAIN SHWRS D D C C C L L C C L L C C L C C C C
TSTMS C C S S C C S C C S C S S C
NCZ060-210800-
TUSQUITEE RAWS-FORESTRY-CHEROKEE NC
35.07N 84.12W ELEV. 1600 FT
227 PM EDT WED MAY 20 2026
DATE 05/20/26 THU 05/21/26 FRI 05/22/26 SAT
EDT 3HRLY 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08
UTC 3HRLY 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12
MIN/MAX 62 82 61 81 62
TEMP 83 76 68 65 64 64 72 78 78 73 67 64 63 63 72 78 79 75 68 65 64 64
DEWPT 65 66 65 64 62 63 68 68 67 66 65 63 62 62 67 68 67 66 65 64 62 63
RH 55 71 90 97 93 97 87 71 69 79 93 97 97 97 84 71 67 74 90 97 93 97
MAX/MIN RH 97 65 100 65 97
WIND DIR SW N N N N N N SW SE SE N E SE SE SE S SE SE SE SE SE SE
WIND DIR DEG 20 0 0 0 0 0 0 20 15 14 0 11 12 12 15 16 15 14 14 14 14 13
WIND SPD 3 0 0 0 0 0 0 1 1 1 0 1 3 3 5 9 8 6 6 5 4 3
WIND GUST 13 17 18 16
CLOUDS B1 B1 SC B2 OV B2 B2 B2 B2 B2 B2 OV B2 B2 B1 B1 B1 B2 B2 B2 OV B2
CLOUDS (%) 51 63 50 73 94 80 77 74 80 74 77 90 75 81 69 64 63 80 78 83 88 84
VSBY 10 6 10 7 7 5 10 6 6 10 10 4
POP 12HR 60 90 70 90 100
QPF 12HR 0.10 0.42 0.06 0.10 0.64
RAIN SHWRS C L C C C L C D L C L L L L D D D D D D D
TSTMS C C C C C C C C C C S S S S
CHANCETHUNDER 30 50 30 50 30
MAX MIX HGT
AGL MIX HGT 3100 3200
MAX VENT RT 18600 40400
T WIND DIR S SE
T WIND SPD 5 12
ADI 19 41
MAX LVORI 9 7
STABILITY B F D B B D D B C D D
CEILING NONE NONE NONE NONE NONE NONE NONE NONE NONE NONE NONE
STA PRES 27.95 27.93 27.96 27.97 27.92 27.93 27.96 27.97 27.95 27.99 28.00
DATE 05/23 SUN 05/24/26 MON 05/25/26 TUE 05/26/26 WED 05/27/26
EDT 6HRLY 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20
UTC 6HRLY 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00
MAX/MIN 80 62 82 62 82 62 83 61 83
TEMP 76 76 64 64 79 76 65 64 79 76 65 64 80 76 64 63 80 77
DEWPT 70 67 64 64 71 67 64 63 71 67 64 63 70 67 63 62 69 66
PWIND DIR S SE S SE S E S N S
WIND CHAR LT LT LT LT LT LT LT LT LT
AVG CLOUDS B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B1 B2 B1 B1 B1
POP 12HR 100 40 80 70 80 60 80 50 60
RAIN SHWRS D D C C L D L C L D L C C D C C C L
TSTMS C C S S C C S C C S C S S C
THIS IS AN EXPERIMENTAL PRODUCT FOR PLANNING AND REVIEW PURPOSES ONLY, AND IS
NOT TO BE SUBSTITUTED FOR AN OFFICIAL FIRE WEATHER SPOT FORECAST
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