Point Forecast Matrices
Issued by NWS Knoxville/Tri Cities, TN
Issued by NWS Knoxville/Tri Cities, TN
334 FOUS54 KMRX 171733 PFMMRX Point Forecast Matrices National Weather Service Morristown TN 132 PM EDT Sun Aug 17 2025 TNZ017-180800- Tri Cities Airport-Sullivan TN 36.50N 82.41W Elev. 1536 ft 132 PM EDT Sun Aug 17 2025 Date 08/17/25 Mon 08/18/25 Tue 08/19/25 Wed 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 89 68 89 68 Temp 87 81 73 71 70 70 78 85 87 81 74 71 69 70 80 85 86 80 73 70 69 69 Dewpt 68 70 69 68 68 69 70 70 69 69 68 67 67 68 70 69 70 69 69 68 67 68 RH 53 69 87 90 93 97 76 61 55 67 82 87 93 93 72 59 59 69 87 93 93 97 Wind Dir NW NW N NE NE NE NE N N NE NE E E E SE W SE SE SE E E E Wind Spd 3 3 1 1 1 1 2 4 5 4 2 2 2 2 2 2 3 3 2 2 1 1 Clouds SC SC SC SC SC B1 SC SC SC SC FW FW SC FW FW SC SC SC SC FW SC SC PoP 12hr 10 20 10 30 10 QPF 12hr 0 0 0 0 0 Rain shwrs S C C Tstms S C C Obvis PF Heat index 91 84 89 91 84 89 91 84 Max heat 93 91 93 91 92 Date 08/20 Thu 08/21/25 Fri 08/22/25 Sat 08/23/25 Sun 08/24/25 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 87 68 85 66 85 66 82 66 82 Temp 84 79 71 69 82 77 69 68 81 76 69 68 79 76 68 67 78 74 Dewpt 70 69 68 68 70 70 67 67 69 68 67 66 70 68 66 66 68 65 PWind Dir NW NE N E S SE S S W Wind Char LT LT LT LT LT LT LT LT LT Avg Clouds SC SC SC SC SC B1 SC B1 B1 B1 SC B1 B1 B1 SC B1 B1 SC PoP 12hr 30 20 40 20 40 20 50 30 40 Rain shwrs C S S C S S C S S C C C S C C Tstms C S S C S S C S C S C $$ TNZ071-180800- Knoxville McGhee Tyson Airport-Blount TN 35.80N 83.98W Elev. 979 ft 132 PM EDT Sun Aug 17 2025 Date 08/17/25 Mon 08/18/25 Tue 08/19/25 Wed EDT 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 72 92 71 93 72 Temp 91 84 78 75 73 72 83 89 91 85 79 75 73 72 83 90 91 85 78 75 73 73 Dewpt 67 72 72 70 70 70 72 72 71 71 70 69 69 69 70 71 70 70 71 70 70 70 RH 45 67 82 84 90 93 70 57 52 63 74 82 87 90 65 54 50 61 79 84 90 90 Wind Dir N NE NE NE NE NE NE N NE NE NE NE E E W NW N E S S S S Wind Spd 3 3 2 1 2 2 3 5 5 5 3 2 2 2 2 2 3 3 2 2 2 2 Clouds FW SC SC FW SC SC FW FW FW FW FW FW FW FW FW FW FW FW FW FW SC SC PoP 12hr 5 10 5 20 5 QPF 12hr 0 0 0 0 0 Rain shwrs S S S Tstms S S S Heat index 94 90 88 96 98 90 87 96 97 90 Max heat 96 87 96 99 87 96 98 87 Date 08/20 Thu 08/21/25 Fri 08/22/25 Sat 08/23/25 Sun 08/24/25 EDT 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 92 72 87 70 86 70 85 69 85 Temp 88 82 74 73 83 80 73 71 85 79 72 71 83 78 72 70 82 77 Dewpt 73 71 70 70 72 71 70 69 73 70 70 69 73 70 69 69 70 67 PWind Dir W SW NW NE NW S SW SW W Wind Char LT LT LT LT LT LT LT LT LT Avg Clouds SC SC SC SC B1 SC B1 B1 B1 B1 B1 B1 B1 SC B1 B1 B1 SC PoP 12hr 30 20 40 20 40 20 40 20 40 Rain shwrs C S C S S C S S S C S S S C Tstms C S C S S C S S C S C $$ TNZ036-180800- Oak Ridge-Anderson TN 36.00N 84.24W Elev. 913 ft 132 PM EDT Sun Aug 17 2025 Date 08/17/25 Mon 08/18/25 Tue 08/19/25 Wed 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 71 92 71 93 71 Temp 89 84 76 73 72 72 83 90 91 84 78 75 72 72 84 91 89 84 77 75 72 72 Dewpt 69 72 71 70 69 70 72 72 72 71 70 69 68 69 71 71 71 71 70 70 70 70 RH 52 67 85 90 90 93 70 56 54 65 76 82 87 90 65 52 56 65 79 84 93 93 Wind Dir N NE NE NE NE NE NE NE NE NE N N NE NE E SW N NE NW W SW SW Wind Spd 2 2 2 2 2 2 2 3 3 2 2 2 2 2 1 1 2 2 1 1 1 1 Clouds SC FW FW FW FW SC FW FW FW FW FW FW FW FW FW FW FW FW FW FW SC SC PoP 12hr 10 5 0 10 5 QPF 12hr 0 0 0 0 0 Rain shwrs S Tstms S Heat index 94 90 88 97 99 89 89 98 95 89 Max heat 96 83 97 99 86 98 98 86 Date 08/20 Thu 08/21/25 Fri 08/22/25 Sat 08/23/25 Sun 08/24/25 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 70 87 69 86 70 85 68 84 Temp 89 82 74 72 84 79 72 71 85 79 72 71 83 78 71 70 82 76 Dewpt 73 72 70 70 73 71 69 69 73 71 69 69 73 70 69 68 70 66 PWind Dir W NW NW N SW W SW W NW Wind Char LT LT LT LT LT LT LT LT LT Avg Clouds SC SC SC SC B1 B1 B1 B1 B1 B1 B1 B1 B1 SC SC B1 B1 SC PoP 12hr 30 20 40 10 40 20 40 20 40 Rain shwrs C S C S C S C C S S S C Tstms C S C S C S S C S C $$ TNZ099-180800- Chattanooga Airport-Hamilton TN 35.03N 85.22W Elev. 688 ft 132 PM EDT Sun Aug 17 2025 Date 08/17/25 Mon 08/18/25 Tue 08/19/25 Wed EDT 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 73 94 73 94 73 Temp 91 84 78 76 74 74 85 91 92 86 79 76 74 75 84 90 91 84 78 75 74 74 Dewpt 69 73 73 72 71 72 73 72 72 73 72 71 71 71 72 72 72 72 73 72 72 72 RH 49 70 85 87 90 93 67 54 52 65 79 85 90 87 67 56 54 67 85 90 93 93 Wind Dir N N N NE N N NE N N NE N N NE NE SE SE E E S S S S Wind Spd 3 2 2 2 2 2 3 5 5 3 2 2 2 1 2 2 3 3 2 1 1 1 Clouds SC SC FW FW FW FW FW FW FW FW FW FW FW FW FW FW FW SC SC SC FW FW PoP 12hr 5 10 5 20 5 QPF 12hr 0 0 0 0.03 0 Rain shwrs S S S Tstms S S S Heat index 96 90 92 99100 93 90 97 99 90 Max heat 98 89 99 101 89 97 100 87 Date 08/20 Thu 08/21/25 Fri 08/22/25 Sat 08/23/25 Sun 08/24/25 EDT 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 93 72 89 71 87 71 85 70 86 Temp 89 83 74 73 86 80 73 72 85 79 73 72 83 78 72 71 83 78 Dewpt 74 73 72 71 73 72 71 71 73 73 72 71 73 72 71 70 70 68 PWind Dir SW NW N NE E SE S SW NW Wind Char LT LT LT LT LT LT LT LT LT Avg Clouds SC SC SC SC SC SC SC SC B1 B1 B1 B1 B1 B1 SC B1 SC SC PoP 12hr 30 10 40 10 50 20 50 20 40 Rain shwrs C C S C S C C S S C Tstms C C S C S S C S C $$ NCZ060-180800- Tusquitee RAWS-Forestry-Cherokee NC 35.07N 84.12W Elev. 1600 ft 132 PM EDT Sun Aug 17 2025 Date 08/17/25 Mon 08/18/25 Tue 08/19/25 Wed 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 92 68 89 67 Temp 87 79 73 70 67 67 81 89 87 79 73 70 68 69 80 86 83 77 72 70 68 68 Dewpt 68 70 69 67 66 66 70 70 70 70 70 69 68 68 71 70 70 71 70 69 68 68 RH 53 74 87 90 97 97 69 54 57 74 90 97100 97 74 59 65 82 93 97100100 Max/Min RH 97 54 100 59 100 Wind Dir N N E N N N NE NW NW E E E E E SE W N SE SE N N N Wind Dir Deg 33 33 11 0 0 0 6 32 31 9 8 10 10 10 15 26 0 12 13 0 0 0 Wind Spd 2 2 1 0 0 0 1 3 3 2 1 1 1 1 1 2 2 2 1 0 0 0 Clouds FW SC SC SC SC B1 FW FW FW SC FW SC SC SC SC SC SC B1 SC SC SC B1 Clouds (%) 21 27 26 36 46 51 25 22 18 50 23 32 34 38 31 46 38 51 37 44 45 59 Vsby 10 10 10 7 7 7 10 10 10 10 10 10 PoP 12hr 5 20 10 40 10 QPF 12hr 0 0.01 0 0.09 0 Rain shwrs S S S C C Tstms S S S C C Heat index 91 85 94 92 83 91 87 Max heat 92 94 94 91 91 ChanceThunder 5 20 10 40 10 Max Mix Hgt AGL Mix Hgt 5300 5900 Max Vent Rt 24400 20900 T Wind Dir NE S T Wind Spd 4 4 ADI 21 18 Max LVORI 8 8 Stability A G F A A G G A B G G Ceiling 9800 18200 18200 18200 18200 20800 NONE NONE NONE 8900 NONE Sta Pres 27.88 27.91 27.93 27.93 27.91 27.93 27.96 27.93 27.89 27.89 27.88 Date 08/20 Thu 08/21/25 Fri 08/22/25 Sat 08/23/25 Sun 08/24/25 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 67 86 66 83 66 82 65 83 Temp 85 77 69 68 83 75 68 67 80 74 68 67 79 73 67 66 80 73 Dewpt 71 71 68 68 70 70 68 67 71 70 68 67 70 69 67 66 69 66 PWind Dir NW N NW E S SE S SE NW Wind Char LT LT LT LT LT LT LT LT LT Avg Clouds SC SC SC B1 SC SC B1 B1 B2 B1 B1 B1 B1 B1 B1 B2 B1 SC PoP 12hr 40 20 50 20 60 30 60 30 50 Rain shwrs C S C S C L C S C L C S S C Tstms C S C S S C C 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 $$