Point Forecast Matrices
Issued by NWS Knoxville/Tri Cities, TN
Issued by NWS Knoxville/Tri Cities, TN
400 FOUS54 KMRX 040532 PFMMRX Point Forecast Matrices National Weather Service Morristown TN 132 AM EDT Thu Sep 4 2025 TNZ017-042000- Tri Cities Airport-Sullivan TN 36.50N 82.41W Elev. 1536 ft 132 AM EDT Thu Sep 4 2025 Date Thu 09/04/25 Fri 09/05/25 Sat 09/06/25 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 78 61 85 63 79 Temp 59 60 69 74 74 68 64 63 62 62 74 81 83 75 68 66 64 64 74 77 76 69 Dewpt 58 59 64 66 66 65 64 63 62 62 67 67 66 66 64 63 63 63 68 69 68 67 RH 96 96 84 76 76 90100100100100 79 63 57 74 87 90 97 97 82 76 76 93 Wind Dir SE S SW SW W S S S SE SE SW SW SW S S S SE S W W W W Wind Spd 2 2 6 11 10 5 2 2 1 2 5 10 8 2 2 2 2 2 5 9 8 3 Clouds SC B1 B1 B1 B1 B1 SC SC B1 SC FW FW FW FW FW SC B1 B2 B2 B2 B2 B2 PoP 12hr 70 30 5 20 70 QPF 12hr 0.26 0.02 0 0 0.31 Rain shwrs S C C L C S S S S C C L L C Tstms S C L C S S S C C Date Sun 09/07/25 Mon 09/08/25 Tue 09/09/25 Wed 09/10/25 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 57 73 48 74 49 78 50 79 Temp 62 57 70 63 52 49 71 63 53 50 74 66 54 51 75 68 Dewpt 60 56 53 50 47 46 48 49 48 47 52 53 50 49 54 55 PWind Dir N N NE NE NE E E NE Wind Char LT LT LT LT LT LT LT LT Avg Clouds B2 B2 B1 FW FW FW FW FW FW FW FW FW FW FW FW FW PoP 12hr 30 10 5 0 0 0 5 5 Rain shwrs C $$ TNZ071-042000- Knoxville McGhee Tyson Airport-Blount TN 35.80N 83.98W Elev. 979 ft 132 AM EDT Thu Sep 4 2025 Date Thu 09/04/25 Fri 09/05/25 Sat 09/06/25 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 83 65 89 68 82 Temp 65 65 74 80 80 73 69 68 66 66 78 87 88 80 74 71 69 69 75 80 78 72 Dewpt 62 63 68 69 68 68 67 66 65 65 69 70 68 68 67 66 66 66 69 71 70 68 RH 90 93 82 69 67 84 93 93 97 97 74 57 52 67 79 84 90 90 82 74 76 87 Wind Dir SW SW SW SW SW W S SW SW SW SW SW SW SW S S S S SW W NW N Wind Spd 5 5 10 12 10 5 4 3 3 3 6 10 9 5 5 4 3 3 5 6 6 5 Clouds SC SC SC SC SC SC SC SC B1 SC FW FW FW FW SC SC B1 B1 B2 B2 B2 B2 PoP 12hr 60 30 5 30 60 QPF 12hr 0.29 0.01 0 0.04 0.24 Rain shwrs S S S C C C C C C C C L L S Tstms S S S C C C C S S C C Heat index 83 83 92 92 83 83 Max heat 83 84 92 94 83 83 Date Sun 09/07/25 Mon 09/08/25 Tue 09/09/25 Wed 09/10/25 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 59 77 52 77 54 81 55 82 Temp 64 59 74 67 58 53 74 68 58 55 78 71 60 56 79 72 Dewpt 62 57 55 52 50 49 52 52 52 51 56 57 55 53 58 58 PWind Dir N N NE NE NE NE E NE Wind Char LT GN LT GN LT LT LT LT Avg Clouds B2 B1 SC FW FW FW FW FW FW FW FW FW FW FW FW FW PoP 12hr 20 5 0 0 0 0 5 5 Rain shwrs S $$ TNZ036-042000- Oak Ridge-Anderson TN 36.00N 84.24W Elev. 913 ft 132 AM EDT Thu Sep 4 2025 Date Thu 09/04/25 Fri 09/05/25 Sat 09/06/25 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 82 63 88 67 81 Temp 64 64 72 79 78 71 67 66 65 65 76 86 87 79 72 70 68 67 75 79 77 70 Dewpt 63 63 68 69 69 68 67 66 65 65 70 71 70 69 68 67 66 66 70 70 69 66 RH 97 97 87 72 74 90100100100100 82 61 57 72 87 90 93 97 84 74 76 87 Wind Dir SW SW SW SW SW SW W S SW SW SW SW SW SW SW SW SW W SW W NW NW Wind Spd 2 3 6 8 6 3 2 1 1 2 4 6 5 3 2 2 2 2 3 4 5 4 Clouds B1 B1 B1 B1 SC SC SC SC B1 B1 FW FW FW FW SC SC B2 B2 B2 B2 B2 B2 PoP 12hr 70 20 5 40 60 QPF 12hr 0.25 0.14 0 0.14 0.20 Rain shwrs C S C L S C C C C L L L L S Tstms S S C L S C C S S S S C C Heat index 91 92 Max heat 91 94 Date Sun 09/07/25 Mon 09/08/25 Tue 09/09/25 Wed 09/10/25 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 56 76 52 77 53 80 54 82 Temp 62 57 74 66 56 53 74 67 57 54 77 70 59 56 79 71 Dewpt 59 55 53 51 49 47 51 51 50 50 56 56 54 52 58 58 PWind Dir N N N NE NE NE N NE Wind Char LT LT LT LT LT LT LT LT Avg Clouds B2 B1 FW FW FW FW FW FW FW FW FW FW FW FW FW FW PoP 12hr 20 5 0 0 0 0 5 5 Rain shwrs S $$ TNZ099-042000- Chattanooga Airport-Hamilton TN 35.03N 85.22W Elev. 688 ft 132 AM EDT Thu Sep 4 2025 Date Thu 09/04/25 Fri 09/05/25 Sat 09/06/25 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 87 66 92 69 86 Temp 67 66 77 83 84 78 72 69 67 67 81 89 90 83 76 73 71 70 79 84 81 75 Dewpt 65 65 68 68 68 68 68 68 67 66 70 69 68 68 69 68 68 67 70 70 70 69 RH 93 97 74 61 59 71 87 97100 97 69 52 49 61 79 84 90 90 74 63 69 82 Wind Dir S S SW SW SW SW S S SE S S SW SW S S S S SW W W NW N Wind Spd 3 4 5 8 8 4 2 2 2 2 4 5 6 4 3 2 2 2 4 5 6 5 Clouds B1 SC FW SC SC SC FW FW SC SC FW FW FW SC SC SC B1 B1 B2 B1 B2 B1 PoP 12hr 40 10 0 20 50 QPF 12hr 0.02 0 0 0 0.16 Rain shwrs S S C C S S S S C C C C Tstms S C C S S S S C C Heat index 86 87 85 94 94 86 88 85 Max heat 86 88 94 95 83 88 88 Date Sun 09/07/25 Mon 09/08/25 Tue 09/09/25 Wed 09/10/25 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 62 79 56 80 56 82 58 84 Temp 66 62 76 70 61 57 76 70 60 57 79 72 62 59 81 74 Dewpt 63 57 53 52 51 49 52 52 53 53 56 57 56 54 56 56 PWind Dir N N N NE NE E E NE Wind Char LT GN GN LT LT LT LT LT Avg Clouds B1 SC FW FW FW FW FW FW FW FW FW SC FW FW FW FW PoP 12hr 10 5 0 0 0 5 5 5 $$ NCZ060-042000- Tusquitee RAWS-Forestry-Cherokee NC 35.07N 84.12W Elev. 1600 ft 132 AM EDT Thu Sep 4 2025 Date Thu 09/04/25 Fri 09/05/25 Sat 09/06/25 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 82 61 88 62 85 Temp 60 60 71 78 78 70 65 63 61 62 77 84 84 75 69 66 63 64 76 81 79 71 Dewpt 59 60 65 66 65 66 64 63 61 61 68 66 65 66 65 64 63 63 68 67 67 67 RH 96100 81 67 64 87 97100100 97 74 55 53 74 87 93100 97 76 63 67 87 Min/Max RH 64 100 51 100 63 Wind Dir SE SE SW SW SW SW SE E E E SW SW SW S SE SE SE SE W W NW NW Wind Dir Deg 12 13 20 22 22 20 12 10 11 11 21 23 22 18 14 13 13 14 24 28 29 30 Wind Spd 1 2 4 5 5 2 1 1 1 1 2 4 4 2 1 1 1 1 2 5 4 2 Clouds SC B2 SC SC SC FW SC FW SC SC FW FW FW SC SC SC B1 B2 B1 B1 B1 B2 Clouds (%) 42 75 49 46 49 25 28 22 29 42 12 17 22 26 29 49 52 70 62 66 64 74 Vsby 7 7 10 10 10 10 10 7 7 7 10 10 PoP 12hr 40 20 5 10 50 QPF 12hr 0.05 0.07 0 0 0.21 Rain shwrs C S C C C C C C C S Tstms C S C C C S C C S ChanceThunder 40 20 5 10 40 Max Mix Hgt AGL Mix Hgt 4700 5400 3500 Max Vent Rt 59500 48200 34700 T Wind Dir SW SW W T Wind Spd 10 6 8 ADI 60 48 35 Max LVORI 10 9 8 Stability F B A G G A A G F B B Ceiling NONE NONE 18200 8900 NONE 9800 9800 NONE NONE NONE NONE Sta Pres 27.83 27.81 27.77 27.83 27.90 27.89 27.88 27.94 27.92 27.93 27.93 Date Sun 09/07/25 Mon 09/08/25 Tue 09/09/25 Wed 09/10/25 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 58 77 49 78 49 80 51 81 Temp 64 59 74 64 54 50 75 65 54 50 76 66 56 52 78 67 Dewpt 64 58 56 51 49 46 51 52 51 48 52 54 52 49 54 56 PWind Dir NW N N N E SE E N Wind Char LT LT LT LT LT LT LT LT Avg Clouds B2 B2 SC FW SC SC SC SC FW FW FW SC SC SC FW FW PoP 12hr 20 10 5 5 5 5 5 5 Rain shwrs S Tstms 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 $$