Point Forecast Matrices
Issued by NWS Knoxville/Tri Cities, TN
Issued by NWS Knoxville/Tri Cities, TN
230 FOUS54 KMRX 141827 PFMMRX Point Forecast Matrices National Weather Service Morristown TN 227 PM EDT Mon Sep 14 2026 TNZ017-150800- Tri Cities Airport-Sullivan TN 36.50N 82.41W Elev. 1536 ft 227 PM EDT Mon Sep 14 2026 Date 09/14/26 Tue 09/15/26 Wed 09/16/26 Thu 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 89 63 90 63 Temp 84 77 67 65 64 64 78 86 88 81 71 67 65 64 78 86 89 82 72 68 65 64 Dewpt 65 62 61 61 60 61 67 69 68 68 67 65 63 63 67 69 68 69 68 65 63 62 RH 53 60 81 87 87 90 69 57 52 65 87 93 93 97 69 57 50 65 87 90 93 93 Wind Dir N NE NE E NE E SE SW NW SE SE E E E SW N N SE SE E E E Wind Spd 6 8 5 3 4 4 3 3 2 1 4 2 1 1 1 2 2 1 2 1 1 1 Clouds FW FW SC SC SC SC B1 SC FW SC SC FW FW SC FW FW FW FW FW FW FW SC PoP 12hr 0 0 0 0 0 QPF 12hr 0 0 0 0 0 Heat index 90 92 84 90 94 85 Max heat 87 92 94 92 96 Date 09/17 Fri 09/18/26 Sat 09/19/26 Sun 09/20/26 Mon 09/21/26 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 91 64 91 65 90 67 89 66 85 Temp 88 81 68 66 88 81 69 66 88 81 70 68 86 80 69 67 82 77 Dewpt 66 67 64 62 67 69 66 64 67 68 65 65 68 69 67 66 69 69 PWind Dir N SE NW E W E SW SE SW Wind Char LT LT LT LT LT LT LT LT LT Avg Clouds SC FW FW FW FW FW SC FW FW FW FW FW SC SC SC SC B1 SC PoP 12hr 20 5 30 5 10 10 30 20 60 Rain shwrs S C S C S S C L Tstms S C S S $$ TNZ071-150800- Knoxville McGhee Tyson Airport-Blount TN 35.80N 83.98W Elev. 979 ft 227 PM EDT Mon Sep 14 2026 Date 09/14/26 Tue 09/15/26 Wed 09/16/26 Thu EDT 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 68 95 70 94 70 Temp 90 84 76 72 69 68 83 92 95 87 79 75 72 70 82 90 94 86 78 74 72 70 Dewpt 70 69 68 66 65 66 70 70 69 70 70 70 69 68 70 71 70 70 70 69 68 68 RH 52 61 76 81 87 93 65 49 43 57 74 84 90 93 67 54 46 59 76 84 87 93 Wind Dir NE NE NE NE NE N N W SW S S SW N N N N NE NE E N S S Wind Spd 8 5 5 3 2 1 0 4 2 3 3 1 0 0 0 2 5 4 1 0 1 1 Clouds FW FW FW SC SC FW FW FW FW FW CL FW FW FW FW FW FW FW FW FW FW FW PoP 12hr 0 5 0 0 0 QPF 12hr 0 0 0 0 0 Heat index 96 88 87 98101 92 86 96100 91 Max heat 96 98 101 86 96 100 87 Date 09/17 Fri 09/18/26 Sat 09/19/26 Sun 09/20/26 Mon 09/21/26 EDT 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 94 69 95 69 95 71 93 70 88 Temp 91 85 74 70 92 86 74 70 92 86 75 72 91 85 74 71 86 81 Dewpt 70 68 68 65 68 68 68 65 67 67 67 66 69 69 69 68 71 70 PWind Dir N S NE E SW SW SW S S Wind Char LT LT LT LT LT LT LT LT LT Avg Clouds FW FW FW FW FW FW FW FW FW FW FW SC SC SC SC SC B1 SC PoP 12hr 10 5 5 5 10 5 40 30 60 Rain shwrs S C S C C L Tstms S S $$ TNZ036-150800- Oak Ridge-Anderson TN 36.00N 84.24W Elev. 913 ft 227 PM EDT Mon Sep 14 2026 Date 09/14/26 Tue 09/15/26 Wed 09/16/26 Thu 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 67 94 70 94 70 Temp 89 82 74 71 68 68 82 91 94 85 77 74 72 71 82 91 93 84 76 73 72 70 Dewpt 71 69 67 65 63 64 70 71 71 71 70 69 68 68 71 72 71 71 70 70 68 68 RH 56 65 79 81 84 87 67 52 47 63 79 84 87 90 69 54 49 65 82 90 87 93 Wind Dir NE NE NE NE NE NE N SW N S SW W W SW SW N E N N N N N Wind Spd 4 3 4 3 2 1 0 3 0 1 1 2 2 1 2 0 2 1 0 0 0 0 Clouds FW FW FW SC SC FW CL FW FW FW FW FW FW FW FW FW FW FW FW FW FW FW PoP 12hr 0 0 0 0 0 QPF 12hr 0 0 0 0 0 Heat index 95 85 86 98101 90 86 99100 89 Max heat 95 98 101 83 99 101 85 Date 09/17 Fri 09/18/26 Sat 09/19/26 Sun 09/20/26 Mon 09/21/26 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 94 69 94 69 94 69 92 69 87 Temp 91 83 73 70 92 84 73 70 91 84 73 70 89 83 73 70 84 79 Dewpt 71 70 69 66 69 69 68 66 68 68 67 67 70 70 69 68 72 71 PWind Dir NE N NE NE SW W SW SW SW Wind Char LT LT LT LT LT LT LT LT LT Avg Clouds FW SC SC FW FW FW FW FW SC FW FW FW SC SC SC B1 B1 SC PoP 12hr 5 5 5 5 10 5 30 30 60 Rain shwrs S C S C C L Tstms S S $$ TNZ099-150800- Chattanooga Airport-Hamilton TN 35.03N 85.22W Elev. 688 ft 227 PM EDT Mon Sep 14 2026 Date 09/14/26 Tue 09/15/26 Wed 09/16/26 Thu EDT 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 72 97 73 97 72 Temp 95 88 79 75 73 72 86 94 96 89 80 76 74 73 85 94 96 89 80 77 74 72 Dewpt 70 69 69 69 68 68 70 70 69 69 70 69 68 68 69 69 68 68 68 68 66 66 RH 45 54 72 82 84 87 59 46 42 52 72 79 82 84 59 44 40 50 67 74 76 81 Wind Dir NE NE NE N N N S S S SE S S S S S E E NE SE S S S Wind Spd 8 5 4 3 2 0 5 6 6 6 8 3 2 1 3 2 4 2 2 2 1 1 Clouds FW CL FW FW FW CL CL FW FW FW FW CL FW FW CL FW FW FW SC FW FW CL PoP 12hr 0 0 0 0 0 QPF 12hr 0 0 0 0 0 Heat index 102 92 91100102 94 83 89 99101 93 83 Max heat 102 87 100 102 88 99 102 89 Date 09/17 Fri 09/18/26 Sat 09/19/26 Sun 09/20/26 Mon 09/21/26 EDT 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 97 70 98 71 97 72 95 71 91 Temp 94 88 75 71 95 88 75 72 95 88 76 73 93 85 75 72 88 81 Dewpt 67 66 64 62 64 63 63 63 66 65 67 68 69 70 70 70 71 71 PWind Dir E SE E SE S S S S SE Wind Char LT LT LT LT LT LT LT LT LT Avg Clouds FW FW FW FW CL CL FW FW FW FW FW FW SC SC SC SC SC SC PoP 12hr 5 5 5 5 10 5 40 30 60 Rain shwrs C C C C L Tstms S S $$ NCZ060-150800- Tusquitee RAWS-Forestry-Cherokee NC 35.07N 84.12W Elev. 1600 ft 227 PM EDT Mon Sep 14 2026 Date 09/14/26 Tue 09/15/26 Wed 09/16/26 Thu 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 63 91 61 Temp 88 77 71 69 68 66 79 87 86 77 70 68 65 63 79 88 89 81 71 68 64 62 Dewpt 69 70 69 67 65 64 70 70 70 70 69 66 65 63 69 69 69 70 69 66 64 62 RH 54 79 93 93 90 93 74 57 59 79 97 93100100 72 54 52 69 93 93100100 Max/Min RH 97 54 100 50 100 Wind Dir N N SE SE E E SE S SE SE SE E E N N N N SE SE N N N Wind Dir Deg 33 1 12 12 11 11 13 16 15 14 12 11 11 0 0 33 1 13 12 0 0 0 Wind Spd 4 1 1 2 2 4 5 4 4 4 3 2 1 0 0 2 2 1 1 0 0 0 Clouds FW FW SC SC FW SC SC SC SC FW FW FW FW FW CL FW FW SC SC FW FW SC Clouds (%) 8 6 35 30 13 31 27 29 26 7 14 19 20 24 5 22 22 31 26 10 21 32 Vsby 10 10 10 10 10 10 10 10 10 10 10 PoP 12hr 0 10 0 10 0 QPF 12hr 0 0 0 0 0 Heat index 92 92 91 92 94 85 Max heat 95 92 94 92 95 ChanceThunder 0 10 0 10 0 Max Mix Hgt AGL Mix Hgt 4800 5400 Max Vent Rt 26300 32100 T Wind Dir SE NE T Wind Spd 8 4 ADI 26 32 Max LVORI 6 10 Stability B G G B B G G B B G G Ceiling 9800 NONE 8000 NONE 9800 9800 8000 8900 NONE NONE NONE Sta Pres 27.98 28.02 28.11 28.12 28.12 28.16 28.20 28.19 28.15 28.18 28.18 Date 09/17 Fri 09/18/26 Sat 09/19/26 Sun 09/20/26 Mon 09/21/26 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 91 61 92 63 92 64 89 64 85 Temp 88 79 66 62 90 80 68 64 89 80 68 65 86 78 68 65 82 75 Dewpt 69 68 63 59 65 66 62 59 65 66 64 63 69 69 67 65 71 70 PWind Dir N SE N N S SE S N S Wind Char LT LT LT LT LT LT LT LT LT Avg Clouds FW FW FW FW SC FW FW FW SC FW FW SC SC SC SC SC B1 SC PoP 12hr 30 5 20 5 20 10 50 20 70 Rain shwrs C S S C C S S C L Tstms S S S C 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 $$