Point Forecast Matrices
Issued by NWS Knoxville/Tri Cities, TN
Issued by NWS Knoxville/Tri Cities, TN
635 FOUS54 KMRX 180448 PFMMRX Point Forecast Matrices National Weather Service Morristown TN 1248 AM EDT Wed Jun 18 2025 TNZ017-182000- Tri Cities Airport-Sullivan TN 36.50N 82.41W Elev. 1536 ft 1248 AM EDT Wed Jun 18 2025 Date Wed 06/18/25 Thu 06/19/25 Fri 06/20/25 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 84 67 82 64 84 Temp 68 68 74 79 82 79 72 69 68 69 75 78 79 74 69 67 66 66 74 81 83 79 Dewpt 67 68 70 72 71 71 69 67 66 68 70 71 69 68 66 66 65 66 67 65 64 67 RH 97100 87 79 69 77 90 93 93 97 84 79 72 82 90 97 97100 79 58 53 67 Wind Dir SW SW SW W W SW S SW SW SW SW W W SW SW W W NW NW NW NW W Wind Spd 4 6 10 11 10 5 3 2 4 6 12 13 12 8 4 2 2 1 2 3 2 1 Clouds B1 B1 B1 B1 B1 SC SC SC B1 B1 B1 B2 B2 B2 B1 B1 B2 B1 SC FW FW FW PoP 12hr 60 20 90 40 5 QPF 12hr 0.12 0.01 0.50 0.06 0 Rain shwrs S C L L S S L L D D C C Tstms S C L L S S C L C C S Obvis PF Heat index 86 Max heat 83 88 83 83 86 Date Sat 06/21/25 Sun 06/22/25 Mon 06/23/25 Tue 06/24/25 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 63 89 66 91 67 92 69 93 Temp 65 67 86 82 70 71 88 84 71 72 89 83 72 72 90 83 Dewpt 62 63 67 69 65 66 69 71 67 68 70 72 68 69 71 71 PWind Dir E SW SE SW SE NE E NE Wind Char LT LT LT LT LT LT LT LT Avg Clouds FW FW FW FW FW FW FW FW FW FW FW FW FW FW FW FW PoP 12hr 0 5 0 5 5 10 10 20 Rain shwrs S Tstms S $$ TNZ071-182000- Knoxville McGhee Tyson Airport-Blount TN 35.80N 83.98W Elev. 979 ft 1248 AM EDT Wed Jun 18 2025 Date Wed 06/18/25 Thu 06/19/25 Fri 06/20/25 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 87 70 83 67 87 Temp 71 72 78 84 86 81 74 73 72 72 78 80 81 77 71 69 69 69 78 84 86 81 Dewpt 68 69 72 74 73 70 69 69 69 70 73 73 71 69 69 68 68 68 70 69 67 68 RH 90 90 82 72 65 69 84 87 90 93 85 79 72 76 93 97 97 97 76 61 53 65 Wind Dir SW SW SW SW SW SW SW SW SW SW SW SW SW SW SW SW SW NE N N N E Wind Spd 8 9 10 11 11 9 8 6 10 11 13 11 10 5 3 2 1 1 1 2 2 2 Wind Gust 21 Clouds B1 B1 B1 B1 B1 SC SC SC SC B1 B1 B2 B2 B1 B1 SC B1 B1 SC FW CL CL PoP 12hr 60 40 90 30 5 QPF 12hr 0.09 0.02 0.55 0.05 0 Rain shwrs S S S C C S C L L D D C C Tstms S S S C C S C S C D L C Heat index 91 93 85 84 85 88 89 84 Max heat 91 93 84 86 88 89 Date Sat 06/21/25 Sun 06/22/25 Mon 06/23/25 Tue 06/24/25 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 66 91 70 92 72 93 72 93 Temp 69 70 88 84 72 73 90 85 75 74 91 83 74 74 91 84 Dewpt 65 66 69 69 67 68 71 72 70 70 72 72 70 70 73 72 PWind Dir E SW SE W S E SE NE Wind Char LT LT LT LT LT LT LT LT Avg Clouds FW FW FW FW FW FW FW FW FW FW FW FW FW SC FW FW PoP 12hr 0 5 0 10 5 20 10 20 Rain shwrs S S Tstms S S $$ TNZ036-182000- Oak Ridge-Anderson TN 36.00N 84.24W Elev. 913 ft 1248 AM EDT Wed Jun 18 2025 Date Wed 06/18/25 Thu 06/19/25 Fri 06/20/25 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 85 70 83 67 87 Temp 70 71 77 84 83 78 73 72 71 72 76 81 81 76 71 69 67 68 78 85 86 80 Dewpt 68 70 72 75 74 72 71 70 70 70 73 73 72 70 69 68 66 67 71 69 68 70 RH 93 97 85 74 74 82 93 93 97 93 90 77 74 82 93 97 97 97 79 59 55 72 Wind Dir SW SW SW SW SW SW SW SW SW SW SW SW SW W W W NW N NE N NE NE Wind Spd 5 6 6 9 9 6 5 5 6 8 9 8 6 4 2 1 1 1 1 1 2 1 Wind Gust 17 17 17 16 16 18 19 18 Clouds OV B2 B2 B1 B1 B1 SC SC B2 B1 B2 B2 B2 B1 SC SC B1 B1 SC FW FW FW PoP 12hr 60 40 100 20 5 QPF 12hr 0.13 0.03 0.56 0.03 0 Rain shwrs C C S C C S C D D D D S S Tstms S S S C C S C S C L L S Heat index 92 90 86 85 89 89 83 Max heat 92 90 86 87 89 90 Date Sat 06/21/25 Sun 06/22/25 Mon 06/23/25 Tue 06/24/25 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 66 90 69 92 71 93 71 94 Temp 69 69 88 83 72 72 91 85 74 74 92 83 74 74 92 83 Dewpt 65 66 70 70 67 69 71 72 69 70 73 73 70 71 73 72 PWind Dir NE S E S NW E NE E Wind Char LT LT LT LT LT LT LT LT Avg Clouds FW FW FW FW FW FW FW FW FW FW FW FW FW SC FW FW PoP 12hr 0 0 0 10 5 20 10 20 Rain shwrs S S Tstms S S $$ TNZ099-182000- Chattanooga Airport-Hamilton TN 35.03N 85.22W Elev. 688 ft 1248 AM EDT Wed Jun 18 2025 Date Wed 06/18/25 Thu 06/19/25 Fri 06/20/25 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 88 72 86 69 90 Temp 71 72 80 86 85 80 74 73 72 73 81 83 83 78 72 71 69 71 80 87 88 82 Dewpt 70 70 74 74 73 73 72 71 71 72 74 73 73 71 71 71 69 70 72 69 68 69 RH 97 93 82 68 67 79 93 93 97 97 79 72 72 79 97100100 97 77 55 52 65 Wind Dir S S SW SW SW S S S S S SW SW W W W W N N N N NE NE Wind Spd 3 4 5 9 9 5 4 4 4 5 8 9 8 4 2 1 0 1 1 2 2 2 Clouds B1 B1 SC B1 B1 SC SC SC SC B1 B1 B1 B1 B1 SC SC SC SC FW FW FW FW PoP 12hr 50 30 90 20 5 QPF 12hr 0.05 0.01 0.47 0.02 0 Rain shwrs S C S C C S C L L D D S S Tstms S S S C C S C C C D C S S Heat index 85 94 92 84 86 89 89 84 91 92 85 Max heat 94 96 89 90 91 92 Date Sat 06/21/25 Sun 06/22/25 Mon 06/23/25 Tue 06/24/25 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 68 93 71 95 72 94 72 95 Temp 71 71 91 85 74 74 92 86 75 75 93 85 75 75 92 85 Dewpt 68 68 69 71 69 69 72 72 71 72 72 72 72 72 72 72 PWind Dir NE SE SE SE SE E E E Wind Char LT LT LT LT LT LT LT LT Avg Clouds CL FW FW FW CL CL FW FW CL CL FW FW FW FW FW FW PoP 12hr 0 5 0 10 5 20 10 30 Rain shwrs S C Tstms S C $$ NCZ060-182000- Tusquitee RAWS-Forestry-Cherokee NC 35.07N 84.12W Elev. 1600 ft 1248 AM EDT Wed Jun 18 2025 Date Wed 06/18/25 Thu 06/19/25 Fri 06/20/25 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 85 66 84 64 87 Temp 66 67 76 82 82 76 70 68 67 68 77 80 79 73 68 67 65 65 77 84 85 77 Dewpt 65 67 71 70 70 69 67 66 66 68 72 71 69 68 67 66 65 65 69 66 65 66 RH 97100 85 67 67 79 90 93 97100 85 74 72 84 97 97100100 76 55 51 69 Min/Max RH 63 100 71 100 50 Wind Dir S SW SW SW SW S SE SE SE SW SW W W W W W N N NW NW NW NW Wind Dir Deg 17 20 21 22 23 19 13 13 15 20 22 24 25 25 27 28 0 0 31 31 31 31 Wind Spd 2 2 4 5 5 3 2 2 2 2 5 6 5 3 1 1 0 0 1 3 4 2 Clouds B2 B1 SC B1 B1 B1 SC SC B1 B2 B1 B2 B2 B2 B2 B1 B1 B1 FW FW FW CL Clouds (%) 73 67 50 60 56 58 47 48 56 78 63 72 77 73 70 54 56 60 19 9 7 4 Vsby 10 10 10 10 6 10 10 10 10 6 6 6 6 10 10 10 7 10 10 10 PoP 12hr 60 40 90 30 10 QPF 12hr 0.14 0.01 0.51 0.12 0 Rain shwrs C S C L L S S S C L L D D C C Tstms S S C L L S S S C S C D C C S Heat index 86 86 83 Max heat 86 88 83 84 86 88 ChanceThunder 60 40 80 30 10 Max Mix Hgt AGL Mix Hgt 3300 3700 5000 Max Vent Rt 56500 41200 30100 T Wind Dir SW W NW T Wind Spd 11 11 5 ADI 49 56 Max LVORI 6 9 Stability D B B G F B B MM MM MM MM Ceiling NONE NONE NONE NONE NONE NONE NONE MM MM MM MM Sta Pres 27.97 27.98 27.95 27.98 28.00 27.98 27.96 MM MM MM MM Date Sat 06/21/25 Sun 06/22/25 Mon 06/23/25 Tue 06/24/25 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 90 64 91 66 92 67 92 Temp 65 66 87 80 67 68 89 80 69 69 89 80 70 70 90 80 Dewpt 63 64 66 69 64 65 68 70 67 67 68 70 67 67 69 71 PWind Dir N S SE S E N E SE Wind Char LT LT LT LT LT LT LT LT Avg Clouds FW FW FW FW FW FW FW FW FW FW FW SC SC FW FW SC PoP 12hr 0 10 5 20 5 30 20 30 Rain shwrs S C S C Tstms 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 $$