Point Forecast Matrices
Issued by NWS Knoxville/Tri Cities, TN
Issued by NWS Knoxville/Tri Cities, TN
273 FOUS54 KMRX 121827 PFMMRX Point Forecast Matrices National Weather Service Morristown TN 227 PM EDT Wed Aug 12 2026 TNZ017-130800- Tri Cities Airport-Sullivan TN 36.50N 82.41W Elev. 1536 ft 227 PM EDT Wed Aug 12 2026 Date 08/12/26 Thu 08/13/26 Fri 08/14/26 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 69 87 70 89 72 Temp 86 81 72 71 70 71 78 84 86 81 74 72 71 72 81 87 88 83 75 73 72 72 Dewpt 72 72 70 70 70 70 73 74 74 73 72 70 70 71 74 74 75 74 72 72 71 72 RH 63 74 93 97100 97 85 72 68 77 93 93 97 97 79 65 66 74 90 97 97100 Wind Dir W SW SW S SW SW W W W W S S S S SW W W SW SW S S S Wind Spd 6 4 2 1 1 3 6 8 5 2 1 0 0 1 5 8 6 2 1 0 0 1 Clouds FW SC SC B1 SC B1 B1 SC B1 B1 B1 B1 B1 B1 B1 SC SC SC SC SC SC B1 PoP 12hr 50 40 20 50 30 QPF 12hr 0.05 0.02 0 0.09 0.03 Rain shwrs S C C C C C C S S C C C C S S S Tstms S C S S C C S C C C S S Heat index 92 85 91 94 86 86 96 98 90 Max heat 93 94 96 98 101 86 Flood A A A A A Date 08/15 Sun 08/16/26 Mon 08/17/26 Tue 08/18/26 Wed 08/19/26 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 70 90 72 90 70 88 68 88 Temp 87 84 73 72 87 84 74 73 88 83 72 71 86 81 70 69 85 81 Dewpt 75 72 71 71 72 72 70 70 71 71 70 70 70 69 69 68 69 68 PWind Dir SW S SW SW W NW W NE W Wind Char LT LT LT LT LT LT LT LT LT Avg Clouds B1 SC SC SC SC FW FW FW SC SC SC SC SC SC SC SC SC FW PoP 12hr 60 30 20 10 40 30 30 20 20 Rain shwrs S L C S C C S C S S S Tstms S C C S C S C S $$ TNZ071-130800- Knoxville McGhee Tyson Airport-Blount TN 35.80N 83.98W Elev. 979 ft 227 PM EDT Wed Aug 12 2026 Date 08/12/26 Thu 08/13/26 Fri 08/14/26 Sat EDT 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 73 91 75 93 76 Temp 90 84 78 76 75 75 83 89 90 86 80 77 76 76 86 92 93 88 81 78 77 76 Dewpt 74 74 73 72 72 72 74 75 75 75 73 73 72 72 75 75 75 75 74 74 73 73 RH 60 72 85 87 90 90 74 64 62 70 79 87 87 87 70 58 56 66 79 88 87 90 Wind Dir SW SW SW SW SW SW SW W SW S S S SW S SW W SW SE S S S S Wind Spd 5 5 4 3 3 4 5 4 4 3 3 2 3 3 4 4 5 3 2 2 2 1 Clouds SC SC B1 B1 B1 B1 B1 B1 B1 B1 SC SC SC SC SC SC SC SC SC FW SC SC PoP 12hr 20 40 10 30 10 QPF 12hr 0.01 0.07 0 0.06 0 Rain shwrs C C S C S C C Tstms C S S C S C C Heat index 99 91 90 99101 95 84 95103105 98 86 Max heat 99 85 99 102 88 103 105 95 Flood A A A A A Date 08/15 Sun 08/16/26 Mon 08/17/26 Tue 08/18/26 Wed 08/19/26 EDT 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 94 75 95 76 96 75 93 73 92 Temp 93 90 79 76 93 89 79 78 94 89 78 76 91 86 76 74 90 86 Dewpt 75 73 73 72 71 72 72 71 70 71 72 71 70 70 71 70 70 69 PWind Dir W SE SW SW W E NW NE N Wind Char LT LT LT LT LT LT LT LT LT Avg Clouds SC SC SC SC SC FW FW FW SC FW SC SC SC SC SC SC SC SC PoP 12hr 30 10 5 0 20 10 20 20 20 Rain shwrs C S S S S Tstms C S S S $$ TNZ036-130800- Oak Ridge-Anderson TN 36.00N 84.24W Elev. 913 ft 227 PM EDT Wed Aug 12 2026 Date 08/12/26 Thu 08/13/26 Fri 08/14/26 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 72 91 74 93 75 Temp 90 83 76 74 73 72 82 88 91 85 78 76 75 75 85 91 93 87 79 77 76 75 Dewpt 75 74 73 72 71 72 75 76 76 75 74 73 72 73 76 77 76 76 75 73 72 73 RH 62 74 90 93 93100 79 68 62 72 88 90 90 94 75 64 58 70 88 87 87 94 Wind Dir SW SW SW SW SW SW SW W W SW SW SW SW SW SW SW W SW N N N SW Wind Spd 4 3 2 2 2 2 3 3 3 1 1 1 1 1 2 3 3 1 0 0 0 1 Clouds SC SC SC B1 SC B1 B1 B1 B1 B1 B1 SC SC SC SC SC SC SC FW FW SC SC PoP 12hr 20 40 10 30 5 QPF 12hr 0.01 0.07 0 0.23 0 Rain shwrs C C S S C S S C C Tstms C S S S C S C C Heat index 101 90 89 99103 94 94105106 98 Max heat 101 99 103 86 105 107 93 Flood A A A A A Date 08/15 Sun 08/16/26 Mon 08/17/26 Tue 08/18/26 Wed 08/19/26 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 75 95 75 96 73 93 71 92 Temp 92 87 77 76 92 87 78 76 93 86 76 74 90 84 74 72 89 83 Dewpt 76 74 73 72 73 73 72 72 73 72 72 71 72 71 71 70 71 70 PWind Dir SW SE SW SW W N NW N NW Wind Char LT LT LT LT LT LT LT LT LT Avg Clouds SC SC SC SC SC FW FW FW SC SC SC SC SC SC SC SC SC FW PoP 12hr 30 5 5 0 20 10 20 10 20 Rain shwrs C S S S Tstms C S S S $$ TNZ099-130800- Chattanooga Airport-Hamilton TN 35.03N 85.22W Elev. 688 ft 227 PM EDT Wed Aug 12 2026 Date 08/12/26 Thu 08/13/26 Fri 08/14/26 Sat EDT 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 74 94 76 96 76 Temp 90 84 79 76 75 75 85 92 93 88 81 79 77 77 88 94 96 90 83 80 78 77 Dewpt 75 75 74 73 73 73 75 75 74 75 74 73 73 73 76 75 74 76 75 74 73 73 RH 62 74 85 90 94 94 72 58 54 66 79 82 87 87 68 54 49 64 77 82 85 87 Wind Dir W W SW S S S W NW W W S N N S W W W W N N N N Wind Spd 5 3 1 1 1 1 3 5 4 3 1 0 0 1 2 4 4 2 0 0 0 0 Clouds SC SC SC SC SC SC SC SC SC B1 B2 B1 B1 SC SC SC FW SC SC FW FW FW PoP 12hr 10 20 5 10 0 QPF 12hr 0 0 0 0 0 Rain shwrs C S Tstms C S Heat index 101 92 94103103 98 86 99106107102 90 85 Max heat 103 87 103 105 92 106 109 99 Date 08/15 Sun 08/16/26 Mon 08/17/26 Tue 08/18/26 Wed 08/19/26 EDT 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 97 76 98 77 99 77 97 75 95 Temp 95 92 81 77 96 91 81 78 97 92 80 78 94 88 78 76 93 88 Dewpt 74 73 73 73 71 72 72 72 70 71 73 72 70 71 72 72 70 70 PWind Dir W NW W W W NW NW N N Wind Char LT LT LT LT LT LT LT LT LT Avg Clouds FW SC SC SC SC FW FW FW FW FW SC FW CL FW FW FW FW FW PoP 12hr 5 0 0 0 5 0 20 10 10 Rain shwrs S Tstms S $$ NCZ060-130800- Tusquitee RAWS-Forestry-Cherokee NC 35.07N 84.12W Elev. 1600 ft 227 PM EDT Wed Aug 12 2026 Date 08/12/26 Thu 08/13/26 Fri 08/14/26 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 69 90 70 91 71 Temp 89 81 73 71 70 69 81 87 89 83 74 72 71 72 83 90 91 84 76 74 73 72 Dewpt 73 72 71 70 69 69 74 73 73 73 72 70 69 70 74 74 73 74 72 71 70 71 RH 59 74 93 97 97100 79 63 59 72 93 93 93 93 74 60 56 72 87 90 90 97 Max/Min RH 100 59 97 56 97 Wind Dir W W N N N N W W W N N N N N W W W N N N N N Wind Dir Deg 28 25 0 0 0 0 28 28 27 0 0 0 0 0 28 28 28 0 0 0 0 0 Wind Spd 4 1 0 0 0 0 2 4 3 0 0 0 0 0 1 4 3 0 0 0 0 0 Clouds FW SC SC SC B2 B1 SC SC B1 B1 B1 B1 B1 B1 SC SC FW SC SC FW SC SC Clouds (%) 25 33 49 45 70 55 42 41 52 68 65 51 63 57 29 31 23 31 28 23 38 43 Vsby 10 10 10 10 7 7 10 10 10 10 10 PoP 12hr 10 30 5 30 5 QPF 12hr 0 0.05 0 0.02 0 Rain shwrs S C S C C Tstms S C S C C Heat index 97 85 86 94 97 89 90 99100 91 Max heat 97 94 97 99 101 86 ChanceThunder 10 30 5 30 5 Max Mix Hgt AGL Mix Hgt 4200 4500 Max Vent Rt 44400 33000 T Wind Dir W NW T Wind Spd 8 6 ADI 44 32 Max LVORI 10 9 Stability A G F A B G F A A G G Ceiling NONE NONE NONE NONE NONE 23500 NONE NONE 23500 NONE NONE Sta Pres 27.86 27.87 27.93 27.94 27.90 27.97 28.02 28.02 27.98 28.05 28.09 Date 08/15 Sun 08/16/26 Mon 08/17/26 Tue 08/18/26 Wed 08/19/26 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 92 71 93 72 94 71 92 69 91 Temp 90 86 75 72 90 85 74 73 91 84 74 72 90 82 72 70 88 81 Dewpt 73 72 71 70 71 72 70 70 70 70 70 69 70 70 70 68 69 69 PWind Dir NW N NW N NW NW NW N NW Wind Char LT LT LT LT LT LT LT LT LT Avg Clouds SC SC SC SC SC FW FW FW SC FW FW FW SC FW FW FW SC FW PoP 12hr 20 5 10 0 10 5 20 10 20 Rain shwrs S S S Tstms S 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 $$