Point Forecast Matrices
Issued by NWS Knoxville/Tri Cities, TN
Issued by NWS Knoxville/Tri Cities, TN
162 FOUS54 KMRX 211739 PFMMRX Point Forecast Matrices National Weather Service Morristown TN 138 PM EDT Thu Aug 21 2025 TNZ017-220800- Tri Cities Airport-Sullivan TN 36.50N 82.41W Elev. 1536 ft 138 PM EDT Thu Aug 21 2025 Date 08/21/25 Fri 08/22/25 Sat 08/23/25 Sun 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 65 85 65 85 66 Temp 82 77 71 68 66 67 77 83 84 78 70 68 67 66 76 82 82 76 69 68 67 66 Dewpt 71 70 68 67 66 66 70 70 69 69 67 66 65 65 68 69 69 69 67 66 66 66 RH 69 79 90 97100 97 79 65 61 74 90 93 93 97 76 65 65 79 93 93 97100 Wind Dir N N NE NE NE E E W W SE SE E E E S SW S S SE S S SW Wind Spd 5 4 2 2 2 2 2 2 3 3 2 2 2 2 2 3 4 3 2 1 1 2 Clouds SC SC FW SC SC SC FW SC SC SC SC SC SC SC SC SC B1 B1 B1 B1 B2 B2 PoP 12hr 10 30 10 60 60 QPF 12hr 0 0.01 0 0.13 0.18 Rain shwrs C S S S S L L L L L L L Tstms C S S S C C C S Heat index 86 87 88 86 86 Max heat 90 89 90 87 87 Date 08/24 Mon 08/25/25 Tue 08/26/25 Wed 08/27/25 Thu 08/28/25 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 79 60 79 55 75 52 75 51 78 Temp 76 74 64 60 76 73 60 56 72 69 56 54 72 69 55 52 75 71 Dewpt 69 67 63 59 57 55 54 54 55 54 50 51 52 51 49 48 52 53 PWind Dir W W W W W N N NE N Wind Char LT LT LT LT LT LT LT LT LT Avg Clouds B2 B1 SC SC SC FW SC SC SC SC SC SC SC FW FW FW FW SC PoP 12hr 70 10 0 5 5 5 5 5 10 Rain shwrs L L Tstms C C $$ TNZ071-220800- Knoxville McGhee Tyson Airport-Blount TN 35.80N 83.98W Elev. 979 ft 138 PM EDT Thu Aug 21 2025 Date 08/21/25 Fri 08/22/25 Sat 08/23/25 Sun EDT 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 69 89 70 85 69 Temp 86 82 76 73 71 70 80 87 87 80 75 73 71 70 78 82 84 79 73 71 71 69 Dewpt 71 70 70 69 68 68 71 72 72 71 71 70 69 70 71 72 72 71 70 70 69 69 RH 61 67 82 87 90 93 74 61 61 74 87 90 93100 79 72 67 77 90 97 93100 Wind Dir N N NE NE NE NE N NW S S SW S E E E SE SW SW S S SW SW Wind Spd 5 4 3 3 2 2 2 2 3 3 2 2 2 1 2 2 4 3 2 2 2 2 Clouds SC B1 B1 FW SC SC FW SC SC B1 SC SC SC SC SC B1 B1 B1 B1 B1 B2 B2 PoP 12hr 5 40 20 60 60 QPF 12hr 0 0.01 0.03 0.22 0.14 Rain shwrs C C S S S S L L L L C C C Tstms C C S S C C C S S S S Heat index 91 86 83 94 94 83 87 90 Max heat 95 94 97 87 90 Date 08/24 Mon 08/25/25 Tue 08/26/25 Wed 08/27/25 Thu 08/28/25 EDT 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 83 62 83 61 78 57 78 56 81 Temp 81 78 67 62 80 77 65 61 76 73 62 58 76 72 61 57 78 74 Dewpt 72 68 64 60 59 58 57 56 57 56 54 54 55 54 53 54 57 57 PWind Dir W N N N NW NE N NE N Wind Char LT LT LT LT LT LT LT LT LT Avg Clouds B1 SC FW FW FW FW SC SC SC SC B1 SC FW FW FW SC SC SC PoP 12hr 50 5 0 0 5 10 5 10 10 Rain shwrs C C Tstms C C $$ TNZ036-220800- Oak Ridge-Anderson TN 36.00N 84.24W Elev. 913 ft 138 PM EDT Thu Aug 21 2025 Date 08/21/25 Fri 08/22/25 Sat 08/23/25 Sun 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 85 68 Temp 87 81 74 72 70 70 81 87 88 81 73 72 70 69 79 84 83 76 72 70 68 70 Dewpt 72 70 69 68 68 68 72 73 72 72 71 70 69 69 72 72 72 71 70 70 68 69 RH 61 69 84 87 93 93 74 63 59 74 93 93 97100 79 67 70 85 93100100 97 Wind Dir N NE NE NE NE NE NE SE NE SE SW SW W NE S S SW SW SW SW W W Wind Spd 3 3 3 2 2 2 2 1 2 2 2 1 1 1 2 2 2 2 1 2 1 2 Clouds SC SC SC FW FW SC SC SC SC SC SC SC SC B1 B1 SC B1 B1 B2 B1 B2 B2 PoP 12hr 5 40 20 70 50 QPF 12hr 0 0.07 0.05 0.26 0.12 Rain shwrs S S S S C C L L C C C C C Tstms S S S C C C C S S S S Heat index 94 85 85 94 95 85 90 88 Max heat 94 94 95 90 90 Date 08/24 Mon 08/25/25 Tue 08/26/25 Wed 08/27/25 Thu 08/28/25 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 83 60 83 59 78 56 78 55 80 Temp 83 76 66 61 80 76 64 60 77 72 61 57 76 72 60 56 77 73 Dewpt 71 68 62 57 59 58 57 56 57 55 53 53 55 54 52 51 56 57 PWind Dir W NW N N NW N N N NE Wind Char LT LT LT LT LT LT LT LT LT Avg Clouds B2 SC FW FW FW FW SC B1 SC SC SC SC SC FW FW SC SC SC PoP 12hr 50 5 0 0 5 10 5 10 10 Rain shwrs C C Tstms C C $$ TNZ099-220800- Chattanooga Airport-Hamilton TN 35.03N 85.22W Elev. 688 ft 138 PM EDT Thu Aug 21 2025 Date 08/21/25 Fri 08/22/25 Sat 08/23/25 Sun EDT 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 70 88 70 85 69 Temp 86 80 75 73 71 71 80 86 85 78 74 72 71 70 77 82 83 79 73 71 70 69 Dewpt 73 73 71 70 70 70 73 74 73 73 72 71 70 70 72 73 72 72 72 71 70 69 RH 65 79 87 90 97 97 79 68 67 85 93 97 97100 85 74 70 79 97100100100 Wind Dir N N N N NE NE E SE SE E SE SE E NE SE SE SE SE S S SW SW Wind Spd 4 3 2 2 2 2 2 3 4 3 2 2 1 1 2 4 4 2 2 1 1 1 Clouds B1 B1 SC SC SC FW SC SC B1 SC SC SC SC B1 B1 B1 SC B1 SC SC SC B1 PoP 12hr 10 60 20 70 40 QPF 12hr 0 0.12 0.01 0.18 0.04 Rain shwrs S C C S S C C L L C C C C C Tstms S C C S S C C C S Heat index 93 84 84 94 92 87 88 Max heat 97 94 95 87 89 Date 08/24 Mon 08/25/25 Tue 08/26/25 Wed 08/27/25 Thu 08/28/25 EDT 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 86 62 85 63 81 59 80 59 81 Temp 83 80 69 63 82 78 67 63 78 74 64 60 77 74 63 59 78 75 Dewpt 72 69 64 59 60 59 58 58 58 57 56 55 57 57 55 54 60 60 PWind Dir NW N N N N N N N NE Wind Char LT LT LT LT LT LT LT LT LT Avg Clouds B1 SC FW FW FW FW SC SC SC SC B1 SC SC SC SC SC FW SC PoP 12hr 50 0 0 0 5 10 10 10 10 Rain shwrs C C Tstms C C $$ NCZ060-220800- Tusquitee RAWS-Forestry-Cherokee NC 35.07N 84.12W Elev. 1600 ft 138 PM EDT Thu Aug 21 2025 Date 08/21/25 Fri 08/22/25 Sat 08/23/25 Sun 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 65 85 65 82 64 Temp 83 76 71 68 66 67 77 84 80 72 68 68 67 66 76 81 79 72 68 66 66 64 Dewpt 71 70 69 68 66 66 71 71 70 69 68 67 66 66 70 70 69 69 67 66 65 64 RH 67 82 93100100 97 82 65 72 90100 97 97100 82 69 72 90 97100 97100 Max/Min RH 100 65 100 69 100 Wind Dir NW N N N SE SE SE SE SE SE SE E E E SE SE SE SE SE N N N Wind Dir Deg 31 33 0 0 12 12 13 15 12 15 12 11 10 10 13 14 14 13 12 0 0 0 Wind Spd 2 1 0 0 1 2 2 3 3 2 2 1 1 1 2 4 3 2 1 0 0 0 Clouds B1 B1 B1 B1 SC B1 SC SC B2 B2 B1 B1 B1 B1 B1 B1 B1 SC SC B1 B2 B2 Clouds (%) 62 61 55 61 45 53 39 42 74 72 54 54 58 59 51 59 60 50 50 62 71 79 Vsby 10 10 10 7 7 7 10 6 6 10 7 10 7 7 10 6 6 10 10 10 7 7 PoP 12hr 30 70 30 70 50 QPF 12hr 0.01 0.35 0.02 0.34 0.12 Rain shwrs C C S S L L C C C C L L C C C C C Tstms C C S S L L C S C C C S S Heat index 88 89 83 85 Max heat 92 89 86 85 85 ChanceThunder 30 60 30 50 30 Max Mix Hgt AGL Mix Hgt 3700 2500 Max Vent Rt 18500 15900 T Wind Dir SE SE T Wind Spd 5 6 ADI 19 16 Max LVORI 9 9 Stability B F F A B F F B A F F Ceiling 25000 25000 25000 25000 25000 25000 25000 25000 25000 25000 25000 Sta Pres MM MM MM MM MM MM MM MM MM MM MM Date 08/24 Mon 08/25/25 Tue 08/26/25 Wed 08/27/25 Thu 08/28/25 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 82 59 82 56 78 53 78 53 80 Temp 81 72 64 60 81 70 61 57 75 69 57 54 77 66 56 54 79 68 Dewpt 69 67 64 60 57 57 55 54 55 55 54 53 55 55 54 53 57 58 PWind Dir NW NW NW NW NW N N NE SW Wind Char LT LT LT LT LT LT LT LT LT Avg Clouds B1 SC FW SC FW FW SC B1 SC SC B1 B1 SC SC SC SC SC SC PoP 12hr 70 5 0 0 5 10 10 10 20 Rain shwrs C L S Tstms C L 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 $$