Point Forecast Matrices
Issued by NWS Knoxville/Tri Cities, TN
Issued by NWS Knoxville/Tri Cities, TN
486 FOUS54 KMRX 210102 PFMMRX Point Forecast Matrices National Weather Service Morristown TN 902 PM EDT Wed Aug 20 2025 TNZ017-210800- Tri Cities Airport-Sullivan TN 36.50N 82.41W Elev. 1536 ft 902 PM EDT Wed Aug 20 2025 Date 08/20/25 Thu 08/21/25 Fri 08/22/25 Sat 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 84 65 86 66 Temp 72 70 68 69 76 82 83 78 70 68 67 66 77 83 85 79 71 68 66 68 Dewpt 70 69 68 68 71 71 70 69 68 67 66 66 70 70 69 70 68 67 66 67 RH 93 97100 97 85 69 65 74 93 97 97100 79 65 59 74 90 97100 97 Wind Dir N N N NE N N N N NE NE NE E E S S SE SE SE E E Wind Spd 2 1 1 2 3 5 5 4 2 2 2 2 2 2 3 3 2 2 2 2 Clouds B1 B1 B1 B1 SC SC SC SC FW FW SC SC SC SC SC SC SC SC SC SC PoP 12hr 30 30 10 40 20 QPF 12hr 0.03 0.03 0 0.09 0 Rain shwrs C C C C S S S Tstms C C C S Obvis PF+PF+PF+ Heat index 86 87 87 89 Max heat 87 89 89 91 Date 08/23 Sun 08/24/25 Mon 08/25/25 Tue 08/26/25 Wed 08/27/25 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 66 81 62 78 52 74 53 75 Temp 81 77 68 66 78 75 65 62 75 71 57 53 71 68 56 54 73 69 Dewpt 70 69 67 66 70 68 63 62 58 54 51 51 53 52 51 50 53 53 PWind Dir S S W SW W W W N NW Wind Char LT LT LT LT LT LT LT LT LT Avg Clouds SC SC SC B1 B2 B1 SC SC SC FW FW SC SC SC SC SC SC SC PoP 12hr 60 50 60 10 5 0 5 5 10 Rain shwrs S L C C C L Tstms S C C S S C $$ TNZ071-210800- Knoxville McGhee Tyson Airport-Blount TN 35.80N 83.98W Elev. 979 ft 902 PM EDT Wed Aug 20 2025 Date 08/20/25 Thu 08/21/25 Fri 08/22/25 Sat EDT 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 71 87 68 88 70 Temp 75 73 72 72 78 85 85 81 75 72 70 69 79 85 87 81 75 72 71 70 Dewpt 72 71 71 70 72 73 72 70 69 69 68 68 71 73 72 71 70 70 69 69 RH 90 93 97 93 82 67 65 69 82 90 93 97 77 67 61 72 84 93 93 97 Wind Dir NW NE NE NE NE N N N NE NE NE NE NE NW NE SE SE S S S Wind Spd 2 2 2 3 5 5 6 5 4 3 2 2 2 2 4 3 2 2 2 1 Clouds B2 B1 B1 B2 B2 SC B1 B1 SC FW FW SC SC SC SC SC SC FW SC SC PoP 12hr 30 10 5 30 10 QPF 12hr 0.14 0 0 0 0 Rain shwrs S C C S Tstms C C Obvis PF+ Heat index 92 91 85 92 94 85 Max heat 92 94 92 94 Date 08/23 Sun 08/24/25 Mon 08/25/25 Tue 08/26/25 Wed 08/27/25 EDT 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 87 69 85 64 81 57 77 57 78 Temp 84 81 72 69 82 79 69 64 78 75 62 58 74 72 61 57 76 72 Dewpt 73 70 69 69 71 68 66 62 59 55 54 54 55 54 54 55 56 56 PWind Dir SW SW W W NW N N NE N Wind Char LT LT LT LT LT LT LT LT LT Avg Clouds SC SC SC B1 B1 SC FW FW FW FW SC SC SC SC SC SC SC SC PoP 12hr 50 40 40 5 0 0 5 10 10 Rain shwrs S C C C C C Tstms S C C C C C $$ TNZ036-210800- Oak Ridge-Anderson TN 36.00N 84.24W Elev. 913 ft 902 PM EDT Wed Aug 20 2025 Date 08/20/25 Thu 08/21/25 Fri 08/22/25 Sat 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 86 67 88 68 Temp 74 73 71 71 79 84 86 80 74 71 69 68 79 85 87 81 74 72 70 69 Dewpt 73 71 69 70 72 73 72 70 68 68 67 68 71 73 72 71 69 69 69 69 RH 97 93 93 97 79 70 63 72 82 90 93100 77 67 61 72 84 90 97100 Wind Dir N NE NE NE NE NE N N N N NE NE NE N N E SE W W SW Wind Spd 2 2 2 3 3 3 4 3 3 2 2 2 2 2 2 2 2 1 1 1 Clouds B1 SC SC B1 B1 B1 B1 SC SC FW FW SC SC SC SC FW SC FW SC B1 PoP 12hr 30 10 5 30 10 QPF 12hr 0.04 0 0 0 0 Rain shwrs C C S Tstms C C Obvis PF+ Heat index 90 92 83 92 94 85 Max heat 90 92 92 94 Date 08/23 Sun 08/24/25 Mon 08/25/25 Tue 08/26/25 Wed 08/27/25 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 67 85 62 80 55 77 55 78 Temp 83 80 71 68 85 77 68 62 78 73 61 56 75 71 60 56 76 72 Dewpt 73 70 69 68 71 68 64 59 59 55 53 52 55 54 53 53 56 56 PWind Dir SW SW W NW NW N NW N NE Wind Char LT LT LT LT LT LT LT LT LT Avg Clouds SC SC SC B1 B1 SC FW FW FW FW FW SC SC SC SC SC SC SC PoP 12hr 50 40 40 5 0 0 5 5 10 Rain shwrs S C C C C C Tstms S C C C C C $$ TNZ099-210800- Chattanooga Airport-Hamilton TN 35.03N 85.22W Elev. 688 ft 902 PM EDT Wed Aug 20 2025 Date 08/20/25 Thu 08/21/25 Fri 08/22/25 Sat EDT 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 72 90 70 89 71 Temp 75 74 73 73 80 87 89 83 76 72 70 72 80 86 88 83 75 73 72 71 Dewpt 73 72 71 72 73 73 72 72 71 69 69 69 72 73 72 72 72 71 71 70 RH 94 93 93 97 79 63 57 70 85 90 97 90 77 65 59 70 90 93 97 97 Wind Dir NW N N N N N N N N N N N E SE S SE SE S S S Wind Spd 2 2 2 3 4 5 5 5 3 2 2 2 2 2 4 3 2 2 1 1 Clouds B2 B1 SC B1 B1 SC SC B1 SC SC SC SC SC SC SC SC FW SC SC SC PoP 12hr 20 10 5 40 10 QPF 12hr 0.05 0 0 0.02 0 Rain shwrs C C S Tstms C C Heat index 84 94 96 88 84 93 95 88 Max heat 94 96 93 95 84 Date 08/23 Sun 08/24/25 Mon 08/25/25 Tue 08/26/25 Wed 08/27/25 EDT 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 86 70 87 64 83 60 79 59 80 Temp 83 80 72 70 84 81 70 65 81 76 64 60 76 73 63 60 77 74 Dewpt 73 72 71 70 72 70 66 62 59 57 55 55 56 56 56 55 57 58 PWind Dir S S W NW NW N N N N Wind Char LT LT LT LT LT LT LT LT LT Avg Clouds B1 SC SC SC SC SC FW FW FW FW FW FW SC SC SC SC SC SC PoP 12hr 60 30 40 5 5 0 10 5 10 Rain shwrs S L C S C C Tstms S C C S C C $$ NCZ060-210800- Tusquitee RAWS-Forestry-Cherokee NC 35.07N 84.12W Elev. 1600 ft 902 PM EDT Wed Aug 20 2025 Date 08/20/25 Thu 08/21/25 Fri 08/22/25 Sat 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 88 65 85 66 Temp 70 68 67 66 77 85 84 76 70 67 65 67 78 84 81 74 69 67 66 67 Dewpt 70 68 67 66 72 72 70 70 68 67 65 66 71 71 70 70 69 67 66 67 RH 100100100100 85 65 63 82 93100100 97 79 65 69 87100100100100 Max/Min RH 100 59 100 65 100 Wind Dir SW N N N NW NW N N N N E E SE S SE E E SE E E Wind Dir Deg 23 0 0 0 31 31 33 33 2 0 9 10 13 17 14 10 11 12 11 11 Wind Spd 1 0 0 0 1 3 4 2 1 0 1 1 2 2 3 2 2 1 1 1 Clouds B1 B1 B1 B2 SC SC SC SC SC SC B1 B1 B1 B1 B1 B1 SC B1 B1 B1 Clouds (%) 59 61 67 81 44 44 30 37 38 46 61 65 52 65 60 60 42 51 56 64 Vsby 10 8 7 7 10 10 10 10 10 7 7 7 10 6 6 10 10 10 7 7 PoP 12hr 20 30 20 60 30 QPF 12hr 0.01 0 0 0.33 0.02 Rain shwrs S S S S S S S L L C C C Tstms S S S C C C S Obvis F+ F+ F+ Heat index 91 88 89 85 Max heat 91 93 89 89 ChanceThunder 30 30 10 50 30 Max Mix Hgt AGL Mix Hgt 4000 5000 Max Vent Rt 25200 20200 T Wind Dir N SE T Wind Spd 5 4 ADI 25 20 Max LVORI 10 8 Stability F D A A G F B B F F Ceiling NONE NONE NONE NONE NONE NONE 8000 11700 11700 11700 Sta Pres 27.77 27.79 27.78 27.78 27.80 27.86 27.88 27.86 27.89 27.91 Date 08/23 Sun 08/24/25 Mon 08/25/25 Tue 08/26/25 Wed 08/27/25 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 65 84 61 80 52 77 53 78 Temp 81 72 67 66 81 75 65 61 79 69 57 53 76 65 57 54 77 67 Dewpt 71 69 67 65 69 68 64 61 58 55 53 51 53 54 53 52 56 56 PWind Dir SE SE NW NW NW N NW N NW Wind Char LT LT LT LT LT LT LT LT LT Avg Clouds B1 B1 SC B1 B1 SC SC SC FW FW FW SC SC SC SC SC SC SC PoP 12hr 70 40 50 10 5 0 10 10 20 Rain shwrs C L C C C C S Tstms S C C C 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 $$