Point Forecast Matrices
Issued by NWS Knoxville/Tri Cities, TN
Issued by NWS Knoxville/Tri Cities, TN
564 FOUS54 KMRX 191743 PFMMRX Point Forecast Matrices National Weather Service Morristown TN 142 PM EDT Tue Aug 19 2025 TNZ017-200800- Tri Cities Airport-Sullivan TN 36.50N 82.41W Elev. 1536 ft 142 PM EDT Tue Aug 19 2025 Date 08/19/25 Wed 08/20/25 Thu 08/21/25 Fri 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 88 68 85 67 Temp 87 82 74 71 69 70 78 84 82 78 72 70 69 69 76 81 82 76 70 68 67 68 Dewpt 69 70 69 68 67 67 70 72 71 71 70 69 68 68 71 71 70 69 68 67 67 67 RH 55 67 84 90 93 90 76 67 69 79 93 97 97 97 85 72 67 79 93 97100 97 Wind Dir NW SE SE E E SE W W NW NE N N N NE N N N N NE NE E E Wind Spd 2 3 2 2 1 1 2 3 4 3 2 1 1 2 2 4 5 3 2 1 1 2 Clouds SC SC FW FW SC B1 B1 SC SC B1 SC SC B1 B1 B1 B1 B1 SC SC SC B1 B1 PoP 12hr 5 50 30 50 20 QPF 12hr 0 0.09 0.26 0.04 0.01 Rain shwrs C C C C S S C C S S S Tstms C C C S S C C S Heat index 92 86 90 87 85 86 Max heat 93 91 92 87 90 Date 08/22 Sat 08/23/25 Sun 08/24/25 Mon 08/25/25 Tue 08/26/25 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 85 67 83 66 82 60 78 54 77 Temp 81 77 69 68 80 75 67 66 78 73 64 61 75 70 58 56 73 68 Dewpt 70 69 67 67 70 69 66 66 69 66 61 59 58 55 52 51 52 53 PWind Dir S SE SW S W W W W W Wind Char LT LT LT LT LT LT LT LT LT Avg Clouds SC B1 SC SC SC B1 B1 B1 B1 SC SC SC SC FW FW SC SC SC PoP 12hr 40 30 60 40 40 10 5 5 5 Rain shwrs S C C S C L C C C C Tstms S C S S C C S S C $$ TNZ071-200800- Knoxville McGhee Tyson Airport-Blount TN 35.80N 83.98W Elev. 979 ft 142 PM EDT Tue Aug 19 2025 Date 08/19/25 Wed 08/20/25 Thu 08/21/25 Fri EDT 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 73 91 71 88 70 Temp 91 85 79 75 73 74 82 88 87 80 76 74 72 72 79 85 86 81 75 73 71 71 Dewpt 71 71 72 71 70 71 73 74 73 72 72 72 71 71 73 73 72 71 71 70 70 70 RH 52 63 79 87 90 90 74 63 63 77 87 93 97 97 82 67 63 72 87 90 97 97 Wind Dir NE S SW W SW S W W N N NE NE NE NE NE N N NE NE NE NE NE Wind Spd 3 4 2 2 2 2 2 3 4 4 2 2 2 2 3 5 5 4 3 2 2 2 Clouds FW FW FW FW SC SC SC SC SC B1 SC SC B1 B1 SC SC SC SC SC SC B1 B1 PoP 12hr 5 50 20 40 10 QPF 12hr 0 0.08 0.07 0 0 Rain shwrs C C S S C C S Tstms C C S C C Heat index 98 90 87 97 94 84 92 92 85 Max heat 101 88 97 98 92 93 Date 08/22 Sat 08/23/25 Sun 08/24/25 Mon 08/25/25 Tue 08/26/25 EDT 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 88 70 85 69 85 63 82 59 80 Temp 85 80 73 71 82 79 72 70 83 78 68 64 79 73 63 60 77 72 Dewpt 72 70 70 69 73 71 69 69 70 67 63 60 59 56 55 55 55 56 PWind Dir NW S SW SW W NW NW N N Wind Char LT LT LT LT LT LT LT LT LT Avg Clouds B1 SC SC SC SC SC B1 B1 B1 SC FW FW FW FW SC SC SC SC PoP 12hr 40 30 50 30 30 5 5 5 5 Rain shwrs S C C S C C C S S C Tstms S C S S C C S S C $$ TNZ036-200800- Oak Ridge-Anderson TN 36.00N 84.24W Elev. 913 ft 142 PM EDT Tue Aug 19 2025 Date 08/19/25 Wed 08/20/25 Thu 08/21/25 Fri 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 90 71 87 69 Temp 91 85 78 75 73 73 82 87 83 79 75 73 72 72 79 85 84 79 74 71 70 70 Dewpt 72 72 72 71 71 71 74 74 74 73 72 72 70 71 73 73 73 72 70 69 68 69 RH 54 65 82 87 93 93 77 65 74 82 90 97 93 97 82 67 70 79 87 93 93 97 Wind Dir E SE SW SW SW SW SW SW NW N N N N N NE N N N NE NE NE NE Wind Spd 2 2 2 2 2 1 2 2 2 2 2 2 2 2 2 3 3 2 2 2 2 2 Clouds FW FW SC FW SC SC B1 SC B1 B1 B1 SC B1 B1 B1 B1 B1 SC SC SC B1 B1 PoP 12hr 5 60 20 30 5 QPF 12hr 0 0.16 0.01 0 0 Rain shwrs C L S S C C S Tstms C C S C S Heat index 99 91 88 95 90 92 90 Max heat 101 86 95 96 92 92 Date 08/22 Sat 08/23/25 Sun 08/24/25 Mon 08/25/25 Tue 08/26/25 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 88 70 85 68 85 61 81 58 79 Temp 86 80 72 71 82 77 70 69 83 77 66 62 79 71 61 59 77 71 Dewpt 73 71 70 69 73 71 69 68 69 65 61 58 58 56 54 54 55 56 PWind Dir SE SW SW W W NW NW N N Wind Char LT LT LT LT LT LT LT LT LT Avg Clouds B1 SC SC SC B1 SC B1 B1 B1 SC FW FW FW FW SC SC SC SC PoP 12hr 40 20 50 20 30 5 5 5 5 Rain shwrs S C S S C C S S S C Tstms S C S S C S S S C $$ TNZ099-200800- Chattanooga Airport-Hamilton TN 35.03N 85.22W Elev. 688 ft 142 PM EDT Tue Aug 19 2025 Date 08/19/25 Wed 08/20/25 Thu 08/21/25 Fri EDT 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 73 93 72 89 71 Temp 91 84 78 75 74 74 84 89 87 81 75 74 73 73 81 86 86 80 75 73 72 72 Dewpt 73 73 73 72 72 72 74 74 74 73 73 72 72 72 73 74 73 73 73 71 70 70 RH 56 70 85 90 93 93 72 61 65 77 94 93 97 97 77 68 65 79 94 93 93 93 Wind Dir NE S S S S S S W NW N N N N N N N N N N N N NE Wind Spd 3 3 2 1 1 1 2 2 3 3 2 2 2 2 3 4 5 4 2 2 2 2 Clouds FW SC FW FW FW FW FW FW SC B1 SC SC SC SC SC SC SC SC SC SC B1 B1 PoP 12hr 10 60 10 40 10 QPF 12hr 0 0.11 0 0.05 0 Rain shwrs S C C C C S Tstms S C C C C Heat index 100 90 91 98 95 86 86 94 93 84 Max heat 102 86 98 99 94 95 Date 08/22 Sat 08/23/25 Sun 08/24/25 Mon 08/25/25 Tue 08/26/25 EDT 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 87 71 85 70 87 64 83 60 80 Temp 84 80 73 71 82 78 72 71 84 78 69 65 80 74 64 61 78 73 Dewpt 74 72 71 71 73 72 70 70 70 68 64 61 59 58 56 55 57 59 PWind Dir E SE SE S NW N N N N Wind Char LT LT LT LT LT LT LT LT LT Avg Clouds B1 B1 SC SC B1 B1 B1 B1 SC SC FW FW FW FW SC SC SC SC PoP 12hr 50 20 50 20 30 5 5 5 5 Rain shwrs S C S S C C S S C Tstms S C S S C S S C $$ NCZ060-200800- Tusquitee RAWS-Forestry-Cherokee NC 35.07N 84.12W Elev. 1600 ft 142 PM EDT Tue Aug 19 2025 Date 08/19/25 Wed 08/20/25 Thu 08/21/25 Fri 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 66 89 66 86 66 Temp 82 76 71 69 67 67 78 84 83 75 70 69 67 67 77 83 81 74 70 68 67 67 Dewpt 72 71 70 69 67 67 72 72 72 71 69 69 67 67 72 72 71 71 69 68 67 67 RH 72 85 97100100100 82 67 70 87 97100100100 85 70 72 90 97100100100 Max/Min RH 100 67 100 69 100 Wind Dir S SE E E N SE S NW NW NW N N N N N NW NW N N N E E Wind Dir Deg 18 15 11 11 0 12 19 31 31 31 0 0 0 0 33 30 32 33 2 0 9 10 Wind Spd 2 2 1 1 0 1 1 2 3 2 0 0 0 0 1 3 3 2 1 0 1 1 Clouds B1 B1 SC SC SC B2 SC SC SC SC SC B1 B1 B2 SC B1 B1 B1 SC B1 B1 B2 Clouds (%) 57 54 42 42 46 70 47 39 46 49 42 53 68 73 45 51 62 68 49 59 69 82 Vsby 10 10 10 7 7 7 10 10 10 10 9 10 PoP 12hr 10 50 10 60 20 QPF 12hr 0 0.12 0 0.13 0.01 Rain shwrs C C C L L S S S S C Tstms C C C C C S Heat index 87 90 88 88 85 Max heat 92 90 92 88 88 ChanceThunder 10 50 10 50 20 Max Mix Hgt AGL Mix Hgt 4100 4100 Max Vent Rt 22400 12400 T Wind Dir N N T Wind Spd 5 3 ADI 22 12 Max LVORI 10 10 Stability B G F A A F F B B F D Ceiling NONE NONE NONE NONE NONE NONE NONE NONE NONE NONE NONE Sta Pres 27.90 27.91 27.89 27.84 27.78 27.78 27.79 27.78 27.77 27.81 27.85 Date 08/22 Sat 08/23/25 Sun 08/24/25 Mon 08/25/25 Tue 08/26/25 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 84 66 82 65 83 59 81 54 80 Temp 80 74 67 66 79 73 67 66 80 73 63 60 78 69 59 56 76 68 Dewpt 71 69 67 66 71 69 66 66 69 66 62 59 58 56 54 53 55 56 PWind Dir SE SE SE SE NW NW NW N NW Wind Char LT LT LT LT LT LT LT LT LT Avg Clouds B2 B1 B1 B1 B1 B1 B1 B2 B1 SC SC SC FW FW SC SC SC SC PoP 12hr 70 40 70 30 40 10 10 5 5 Rain shwrs C L C S C L C S S C Tstms S C C S 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 $$