Point Forecast Matrices
Issued by NWS Knoxville/Tri Cities, TN
Issued by NWS Knoxville/Tri Cities, TN
749 FOUS54 KMRX 150627 PFMMRX Point Forecast Matrices National Weather Service Morristown TN 226 AM EDT Tue Sep 15 2026 TNZ017-152000- Tri Cities Airport-Sullivan TN 36.50N 82.41W Elev. 1536 ft 226 AM EDT Tue Sep 15 2026 Date Tue 09/15/26 Wed 09/16/26 Thu 09/17/26 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 89 63 90 65 90 Temp 64 63 78 86 88 81 71 67 64 64 79 87 89 82 72 69 66 66 80 87 88 81 Dewpt 61 62 65 68 67 67 66 65 63 63 67 69 68 68 67 65 64 63 66 67 68 68 RH 90 97 64 55 50 63 84 93 97 97 67 55 50 63 84 87 93 90 62 52 52 65 Wind Dir NE NE SE SW SW SE SE E E E SW NW NW SE SE E E SE SW NW NW N Wind Spd 4 4 3 3 2 1 4 2 1 1 1 2 2 1 1 1 0 0 1 2 3 1 Clouds FW SC SC SC FW FW FW FW FW SC FW SC SC FW FW FW FW SC FW SC FW SC PoP 12hr 0 0 5 0 30 QPF 12hr 0 0 0 0 0.07 Rain shwrs C C Tstms C C Heat index 90 91 91 94 85 90 92 Max heat 91 93 93 95 92 94 Date Fri 09/18/26 Sat 09/19/26 Sun 09/20/26 Mon 09/21/26 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 65 90 65 89 66 88 65 85 Temp 69 66 88 80 68 66 87 80 69 67 85 79 68 66 81 75 Dewpt 65 63 67 69 67 66 68 68 66 65 68 68 66 65 69 67 PWind Dir N N NE S SE SW SE W Wind Char LT LT LT LT LT LT LT LT Avg Clouds FW FW FW SC SC FW SC SC SC FW SC SC SC SC SC SC PoP 12hr 10 20 5 30 5 20 20 60 Rain shwrs S C S S S C L Tstms S C S S $$ TNZ071-152000- Knoxville McGhee Tyson Airport-Blount TN 35.80N 83.98W Elev. 979 ft 226 AM EDT Tue Sep 15 2026 Date Tue 09/15/26 Wed 09/16/26 Thu 09/17/26 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 95 70 94 70 95 Temp 70 68 83 92 95 87 79 75 72 70 82 91 94 87 78 75 72 70 83 92 94 86 Dewpt 65 66 70 70 68 69 70 69 68 68 70 70 69 68 69 69 68 67 69 70 68 67 RH 84 93 65 49 42 55 74 82 87 93 67 50 44 53 74 82 87 90 63 49 43 53 Wind Dir NE N N SW W S SW NW N N N N NE E SE N S S W N NE NE Wind Spd 2 1 0 3 2 3 4 2 0 0 0 2 5 4 1 0 1 1 1 2 5 3 Clouds FW FW FW SC FW SC FW FW SC FW FW FW SC FW SC FW FW FW FW FW FW SC PoP 12hr 0 0 0 0 5 QPF 12hr 0 0 0 0 0 Heat index 87 98100 91 86 97 99 91 87 98 99 89 Max heat 98 100 85 97 99 85 98 100 Date Fri 09/18/26 Sat 09/19/26 Sun 09/20/26 Mon 09/21/26 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 70 94 69 94 70 92 69 89 Temp 74 70 91 85 74 70 91 85 74 71 90 84 73 69 86 79 Dewpt 68 66 68 69 69 67 69 68 68 67 69 69 69 68 70 69 PWind Dir E NE E SW S SW S SW Wind Char LT LT LT LT LT LT LT LT Avg Clouds SC FW FW FW SC SC SC SC SC SC SC SC SC SC SC SC PoP 12hr 5 20 10 10 10 20 20 60 Rain shwrs S S S S L Tstms S S S $$ TNZ036-152000- Oak Ridge-Anderson TN 36.00N 84.24W Elev. 913 ft 226 AM EDT Tue Sep 15 2026 Date Tue 09/15/26 Wed 09/16/26 Thu 09/17/26 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 94 70 93 69 94 Temp 68 68 82 91 93 85 77 73 71 70 82 90 92 84 76 74 71 70 84 91 93 84 Dewpt 64 65 70 71 70 70 70 69 68 68 70 71 71 70 70 69 68 68 71 71 70 70 RH 87 90 67 52 47 61 79 87 90 93 67 54 51 63 82 84 90 93 65 52 47 63 Wind Dir NE NE N SW N SE W W W SW SW N NE NE N N N N N NE N NE Wind Spd 2 1 0 3 0 1 1 2 2 1 2 0 2 1 0 0 0 0 0 1 3 2 Clouds FW FW FW FW CL FW FW SC FW FW FW SC SC SC FW FW FW FW FW SC SC SC PoP 12hr 0 5 0 0 5 QPF 12hr 0 0 0 0 0 Heat index 86 98 99 90 86 96 99 88 89 98 99 88 Max heat 98 99 83 96 99 98 100 Date Fri 09/18/26 Sat 09/19/26 Sun 09/20/26 Mon 09/21/26 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 69 93 69 93 69 92 68 88 Temp 73 70 90 83 73 70 90 83 73 70 88 82 72 68 85 78 Dewpt 69 66 70 70 69 68 70 69 69 67 70 70 69 67 71 70 PWind Dir NE NE NE SW SW SW SW SW Wind Char LT LT LT LT LT LT LT LT Avg Clouds SC FW FW FW SC FW SC FW SC SC SC SC SC SC SC SC PoP 12hr 5 20 10 5 10 20 20 60 Rain shwrs S S S S L Tstms S S C $$ TNZ099-152000- Chattanooga Airport-Hamilton TN 35.03N 85.22W Elev. 688 ft 226 AM EDT Tue Sep 15 2026 Date Tue 09/15/26 Wed 09/16/26 Thu 09/17/26 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 97 72 97 71 97 Temp 73 72 86 94 96 88 80 76 74 73 85 94 96 89 80 76 74 72 86 94 96 88 Dewpt 68 69 70 69 68 69 69 69 68 67 68 69 67 67 68 67 65 65 65 66 66 66 RH 84 90 59 44 40 54 69 79 82 81 57 44 39 48 67 74 74 79 50 40 38 48 Wind Dir N N S S S SE S S S S S NE NE E SE S S N SW NE NE NE Wind Spd 2 0 5 6 6 6 8 3 1 1 3 2 4 2 2 1 1 0 1 3 4 3 Clouds FW CL CL FW FW FW FW FW SC FW FW FW FW FW FW FW CL CL CL FW FW FW PoP 12hr 0 0 0 0 5 QPF 12hr 0 0 0 0 0 Heat index 91 99101 92 83 88 99100 92 83 97100 Max heat 99 101 87 99 100 87 97 101 Date Fri 09/18/26 Sat 09/19/26 Sun 09/20/26 Mon 09/21/26 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 71 97 71 96 71 95 70 91 Temp 76 72 94 87 75 72 94 87 75 72 92 85 74 71 89 81 Dewpt 64 63 65 68 68 67 67 67 67 68 69 69 69 69 70 70 PWind Dir E NE NE S S S S SW Wind Char LT LT LT LT LT LT LT LT Avg Clouds FW FW CL FW FW FW FW FW FW FW FW SC SC SC SC SC PoP 12hr 0 10 10 10 5 20 20 60 Rain shwrs S S S L Tstms S S S $$ NCZ060-152000- Tusquitee RAWS-Forestry-Cherokee NC 35.07N 84.12W Elev. 1600 ft 226 AM EDT Tue Sep 15 2026 Date Tue 09/15/26 Wed 09/16/26 Thu 09/17/26 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 90 63 91 62 92 Temp 68 66 79 87 86 76 70 68 65 63 79 88 88 78 71 68 65 63 81 90 88 77 Dewpt 65 65 70 70 69 69 69 66 64 62 68 69 68 69 68 65 63 62 67 68 67 68 RH 90 97 74 57 57 79 97 93 97 97 69 54 52 74 90 90 93 97 63 49 50 74 Min/Max RH 52 97 49 97 45 Wind Dir E SE SE S SE SE E E E E N NW N SE E N N N NW N N NE Wind Dir Deg 11 12 13 16 15 13 11 10 9 11 0 32 33 14 11 0 0 0 32 33 34 5 Wind Spd 2 3 5 4 4 4 3 1 1 1 0 2 2 1 1 0 0 0 1 3 3 1 Clouds FW B1 FW SC SC SC SC SC SC FW CL SC SC SC FW FW FW SC CL FW FW SC Clouds (%) 19 51 15 28 35 28 26 37 26 23 4 38 35 49 22 15 15 31 5 15 24 34 Vsby 10 10 10 10 10 10 10 10 7 7 10 PoP 12hr 20 0 10 0 20 QPF 12hr 0 0 0 0 0 Rain shwrs S S Tstms S S Heat index 92 90 92 92 94 91 Max heat 92 94 92 94 94 94 ChanceThunder 10 0 10 0 20 Max Mix Hgt AGL Mix Hgt 4900 5100 5700 Max Vent Rt 26600 25300 39300 T Wind Dir SE NE NE T Wind Spd 6 4 4 ADI 27 25 39 Max LVORI 7 10 10 Stability F B B G G B B G G B B Ceiling 8000 8900 10800 NONE NONE NONE NONE NONE NONE NONE NONE Sta Pres 28.12 28.12 28.13 28.17 28.22 28.20 28.17 28.18 28.19 28.14 28.09 Date Fri 09/18/26 Sat 09/19/26 Sun 09/20/26 Mon 09/21/26 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 62 92 63 91 63 89 62 86 Temp 67 63 90 79 68 64 88 79 67 64 86 78 67 63 83 75 Dewpt 63 59 66 69 66 63 67 68 65 63 69 69 66 63 70 69 PWind Dir NE NE N SE E S E NE Wind Char LT LT LT LT LT LT LT LT Avg Clouds SC FW FW SC SC SC SC SC SC SC B1 SC SC SC B1 B1 PoP 12hr 5 30 5 40 5 50 20 70 Rain shwrs C C S C S C L Tstms C C 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 $$