488
FOUS54 KMRX 181827
PFMMRX
POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE MORRISTOWN TN
227 PM EDT TUE AUG 18 2026
TNZ017-190800-
TRI CITIES AIRPORT-SULLIVAN TN
36.50N 82.41W ELEV. 1536 FT
227 PM EDT TUE AUG 18 2026
DATE 08/18/26 WED 08/19/26 THU 08/20/26 FRI
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 87 66 86 66
TEMP 84 79 71 68 66 66 77 85 86 81 72 69 67 68 77 83 85 79 72 69 68 67
DEWPT 69 68 67 66 65 66 67 66 65 67 66 65 64 65 67 68 69 69 68 68 67 67
RH 61 69 87 93 97100 71 53 50 63 81 87 90 90 71 61 59 72 87 97 97100
WIND DIR NW NW NE N NE SE W W W S N E SE E W W SW W NE E E NE
WIND SPD 6 2 0 0 0 0 1 2 3 1 0 0 0 1 2 5 4 2 0 0 0 1
CLOUDS SC FW FW SC SC SC SC SC FW SC FW FW SC B1 B1 B1 SC SC SC SC B1 B1
POP 12HR 5 0 30 30 40
QPF 12HR 0 0 0 0 0.04
RAIN SHWRS C C C C C C C C C
TSTMS S C C S S S
OBVIS PF F F
HEAT INDEX 88 87 88
MAX HEAT 90 88 89 88 91
DATE 08/21 SAT 08/22/26 SUN 08/23/26 MON 08/24/26 TUE 08/25/26
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 85 65 84 63 83 60 84 62 86
TEMP 83 78 68 67 82 77 66 65 81 75 63 61 81 76 64 64 84 78
DEWPT 71 69 67 67 68 65 64 64 63 61 59 60 61 61 60 60 63 64
PWIND DIR W SE W W W N NW SE W
WIND CHAR LT LT LT LT LT LT LT LT LT
AVG CLOUDS B1 B1 B1 B1 B1 SC SC FW SC FW FW FW SC SC FW SC SC SC
POP 12HR 70 50 30 10 10 0 10 5 20
RAIN SHWRS C L C C S
TSTMS S C C C S
TNZ071-190800-
KNOXVILLE MCGHEE TYSON AIRPORT-BLOUNT TN
35.80N 83.98W ELEV. 979 FT
227 PM EDT TUE AUG 18 2026
DATE 08/18/26 WED 08/19/26 THU 08/20/26 FRI
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 68 91 70 91 70
TEMP 89 83 76 72 69 69 81 88 90 85 77 74 72 71 81 88 90 85 77 74 72 71
DEWPT 70 69 69 68 67 67 69 68 66 67 67 66 66 67 70 71 71 71 71 71 70 70
RH 54 63 79 87 93 93 67 52 45 55 71 76 81 87 69 57 54 63 82 90 93 97
WIND DIR NW N N N N NE N N E E S N N SW NW W W NW NE E E E
WIND SPD 4 4 1 0 0 1 1 2 3 2 1 0 0 2 2 4 4 3 2 1 1 1
CLOUDS FW FW FW FW SC SC FW FW FW SC SC FW SC B1 SC B1 SC SC SC SC SC SC
POP 12HR 0 0 20 20 40
QPF 12HR 0 0 0.02 0 0.05
RAIN SHWRS S S S S C C C C C
TSTMS S S S S S
OBVIS PF PF
HEAT INDEX 94 87 84 92 93 88 85 94 96 90
MAX HEAT 95 83 92 94 84 94 96 86
DATE 08/21 SAT 08/22/26 SUN 08/23/26 MON 08/24/26 TUE 08/25/26
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 89 69 89 67 88 65 88 67 91
TEMP 87 84 73 69 87 83 71 69 86 82 69 66 86 82 71 68 88 84
DEWPT 73 70 70 69 68 66 66 65 65 62 62 61 62 62 62 62 65 65
PWIND DIR NW E W W NW NE NW E W
WIND CHAR LT LT LT LT LT LT LT LT LT
AVG CLOUDS SC B1 B1 SC SC SC SC FW FW FW SC SC SC SC SC SC SC SC
POP 12HR 60 40 10 10 10 5 10 10 20
RAIN SHWRS C L C S S
TSTMS S C C S
TNZ036-190800-
OAK RIDGE-ANDERSON TN
36.00N 84.24W ELEV. 913 FT
227 PM EDT TUE AUG 18 2026
DATE 08/18/26 WED 08/19/26 THU 08/20/26 FRI
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 90 70 89 69
TEMP 89 83 73 69 67 68 81 87 90 84 76 73 71 71 79 85 88 83 75 73 71 70
DEWPT 71 69 68 67 65 66 70 69 69 70 68 67 67 68 71 72 73 73 72 71 70 70
RH 56 63 84 93 93 93 69 55 50 63 76 81 87 90 77 65 61 72 90 93 97100
WIND DIR NW N N NE NE N N N SE N N N N SW NW SW SW NW N NE NE NE
WIND SPD 3 2 2 1 1 0 0 0 1 0 0 0 0 1 1 2 2 1 1 1 1 1
CLOUDS FW FW FW FW FW FW FW FW FW FW FW FW B1 B1 B2 B1 SC SC SC SC B1 SC
POP 12HR 0 0 30 40 40
QPF 12HR 0 0 0.06 0 0.05
RAIN SHWRS S C C C C C C C C S
TSTMS S S C C C S
OBVIS PF PF PF
HEAT INDEX 95 87 85 91 95 88 91 96 89
MAX HEAT 95 91 95 91 96 84
DATE 08/21 SAT 08/22/26 SUN 08/23/26 MON 08/24/26 TUE 08/25/26
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 89 67 89 65 88 63 88 65 90
TEMP 85 82 71 68 86 81 69 67 85 80 67 64 83 80 69 66 86 82
DEWPT 73 71 69 68 69 67 66 65 66 64 62 61 64 64 63 63 67 67
PWIND DIR W N W NW NW N W N W
WIND CHAR LT LT LT LT LT LT LT LT LT
AVG CLOUDS B1 B1 SC SC SC SC FW FW FW FW FW SC SC SC SC SC SC SC
POP 12HR 60 30 10 5 5 5 10 10 20
RAIN SHWRS S L C S S
TSTMS S C C S
TNZ099-190800-
CHATTANOOGA AIRPORT-HAMILTON TN
35.03N 85.22W ELEV. 688 FT
227 PM EDT TUE AUG 18 2026
DATE 08/18/26 WED 08/19/26 THU 08/20/26 FRI
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 69 95 72 94 73
TEMP 92 85 76 72 70 70 82 92 95 89 79 75 73 73 85 92 93 88 79 76 75 73
DEWPT 67 68 68 68 67 67 69 67 65 68 68 68 68 68 71 72 72 73 73 73 72 72
RH 44 57 76 87 90 90 65 44 37 50 69 79 84 84 63 52 51 61 82 90 90 97
WIND DIR NW N NW N N N N N NE SE N N N N N NW W NE N N N N
WIND SPD 5 4 2 1 0 1 1 2 2 1 0 0 0 0 2 3 4 2 1 0 0 0
CLOUDS CL CL FW FW FW FW FW FW CL FW B1 SC SC SC SC SC SC SC SC B1 SC SC
POP 12HR 0 0 20 30 30
QPF 12HR 0 0 0.07 0.13 0.05
RAIN SHWRS C C S S C C C
TSTMS S S S S S
HEAT INDEX 96 88 85 96 98 93 90100101 96
MAX HEAT 96 83 96 98 87 100 101 92
DATE 08/21 SAT 08/22/26 SUN 08/23/26 MON 08/24/26 TUE 08/25/26
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 93 70 93 70 92 68 92 70 94
TEMP 91 86 74 71 90 85 73 71 90 85 72 69 89 85 73 71 91 87
DEWPT 73 72 71 70 68 66 67 67 65 63 64 63 63 62 64 64 66 67
PWIND DIR W NW NW NW NW N NW N SW
WIND CHAR LT LT LT LT LT LT LT LT LT
AVG CLOUDS SC SC SC SC SC SC FW FW CL FW FW FW SC SC FW SC SC SC
POP 12HR 50 30 10 0 5 5 10 10 20
RAIN SHWRS C C C S
TSTMS S C S
NCZ060-190800-
TUSQUITEE RAWS-FORESTRY-CHEROKEE NC
35.07N 84.12W ELEV. 1600 FT
227 PM EDT TUE AUG 18 2026
DATE 08/18/26 WED 08/19/26 THU 08/20/26 FRI
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 63 90 66 91 67
TEMP 86 78 70 67 64 64 80 88 89 79 72 69 68 68 82 89 90 82 73 70 69 67
DEWPT 70 68 68 66 64 64 68 67 66 68 66 65 63 64 70 70 70 70 70 68 67 67
RH 59 71 93 97100100 67 50 47 69 81 87 84 87 67 54 52 67 90 93 93100
MAX/MIN RH 100 47 90 52 100
WIND DIR NW NW NW N N N N NW NW N N N N N N NW NW N N N N N
WIND DIR DEG 30 30 30 0 0 0 0 30 31 0 0 0 0 0 0 30 29 0 0 0 0 0
WIND SPD 6 3 1 0 0 0 0 2 3 0 0 0 0 0 0 3 3 0 0 0 0 0
CLOUDS FW CL FW FW SC B2 SC FW CL CL SC SC FW B2 SC SC FW FW FW SC B1 B1
CLOUDS (%) 8 3 9 25 46 70 33 6 4 3 33 30 21 71 45 37 21 23 25 50 65 62
VSBY 10 10 10 10 7 7 10 10 10 10 10
POP 12HR 0 0 5 5 30
QPF 12HR 0 0 0 0 0.60
RAIN SHWRS S S C C C
TSTMS S S
OBVIS F F F
HEAT INDEX 91 83 91 92 86 94 96 86
MAX HEAT 93 91 93 94 96
CHANCETHUNDER 0 0 5 5 20
MAX MIX HGT
AGL MIX HGT 3700 4000
MAX VENT RT 29600 41700
T WIND DIR N NW
T WIND SPD 5 6
ADI 26 36
MAX LVORI 10 6
STABILITY A G F A A G F A A F F
CEILING NONE NONE 23500 NONE 18200 18200 NONE NONE NONE NONE NONE
STA PRES 27.86 27.89 27.90 27.89 27.85 27.89 27.95 27.94 27.86 27.91 27.94
DATE 08/21 SAT 08/22/26 SUN 08/23/26 MON 08/24/26 TUE 08/25/26
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 88 64 87 62 87 60 87 62 89
TEMP 86 79 68 65 85 78 66 64 85 77 64 61 85 77 66 63 87 79
DEWPT 72 70 68 65 69 66 64 63 65 63 61 59 62 63 61 61 65 66
PWIND DIR W N NW NW NW NW W N W
WIND CHAR LT LT LT LT LT LT LT LT LT
AVG CLOUDS B1 B1 B1 B1 B1 FW FW FW FW FW FW FW SC SC FW SC B1 SC
POP 12HR 50 40 20 5 5 5 10 5 20
RAIN SHWRS C C C S S S S
TSTMS S C C S S
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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