Point Forecast Matrices
Issued by NWS Knoxville/Tri Cities, TN
Issued by NWS Knoxville/Tri Cities, TN
504 FOUS54 KMRX 182124 PFMMRX Point Forecast Matrices National Weather Service Morristown TN 523 PM EDT Fri Jul 18 2025 TNZ017-190800- Tri Cities Airport-Sullivan TN 36.50N 82.41W Elev. 1536 ft 523 PM EDT Fri Jul 18 2025 Date 07/18/25 Sat 07/19/25 Sun 07/20/25 Mon 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 85 70 86 70 Temp 85 75 73 71 72 78 81 82 78 73 73 71 71 76 82 83 80 74 72 71 72 Dewpt 71 72 71 70 71 72 72 71 71 72 71 70 71 73 74 73 73 72 72 70 72 RH 63 90 93 97 97 82 74 69 79 97 93 97100 90 77 72 79 93100 97100 Wind Dir W SW SW S SW SW SW W W SW SW SW SW W W W W SW SW SW SW Wind Spd 3 2 2 2 2 5 6 6 5 4 4 5 5 6 8 8 5 2 2 2 2 Clouds B1 B2 B2 B2 B2 B2 B1 SC B1 B2 B2 OV B2 B2 B2 B1 B1 B2 B2 B2 B2 PoP 12hr 40 70 60 70 50 QPF 12hr 0.03 0.21 0.14 0.23 0.28 Rain shwrs C S S C L L L L C C C C L L C C C C C Tstms C S S S C C C S S S C L C C Heat index 90 86 87 89 89 Max heat 97 88 90 91 93 Flood A A Date 07/21 Tue 07/22/25 Wed 07/23/25 Thu 07/24/25 Fri 07/25/25 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 88 68 90 69 91 70 90 Temp 83 79 72 71 85 80 71 70 86 82 72 71 86 83 73 73 86 84 Dewpt 73 73 71 70 71 70 68 68 71 70 69 68 72 72 71 70 73 73 PWind Dir W SE SW SE S SE SW S SW Wind Char LT LT LT LT LT LT LT LT LT Avg Clouds B2 B1 B1 B1 B1 SC SC SC SC SC SC SC SC SC FW SC SC SC PoP 12hr 70 40 60 30 30 10 30 20 40 Rain shwrs C L C S S L C C S C S S C Tstms S L C S C S C S C S S C $$ TNZ071-190800- Knoxville McGhee Tyson Airport-Blount TN 35.80N 83.98W Elev. 979 ft 523 PM EDT Fri Jul 18 2025 Date 07/18/25 Sat 07/19/25 Sun 07/20/25 Mon EDT 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 74 88 74 91 74 Temp 88 79 76 75 75 82 86 85 81 78 76 74 75 82 88 89 84 78 77 75 76 Dewpt 71 73 73 72 72 74 74 74 71 72 72 72 73 75 76 74 74 75 74 73 74 RH 57 82 90 90 90 77 68 70 72 82 87 93 94 79 68 61 72 91 90 94 94 Wind Dir SW SW SW SW SW SW SW SW SW SW SW SW SW SW W W SW SW SW SW SW Wind Spd 5 4 3 3 4 6 9 9 6 5 5 5 5 6 6 6 5 2 2 2 2 Clouds B2 B2 B1 B1 SC SC B1 B1 B1 B2 B1 B2 B1 B1 B1 SC B1 B2 B2 B1 B1 PoP 12hr 40 70 50 60 30 QPF 12hr 0.11 0.18 0.05 0.18 0.02 Rain shwrs C S S C L L C C S S S S L L C C S Tstms C S S C C C S S S S L L C S S Heat index 94 88 94 93 85 89 99 98 91 Max heat 100 86 94 97 99 99 89 Date 07/21 Tue 07/22/25 Wed 07/23/25 Thu 07/24/25 Fri 07/25/25 EDT 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 91 73 93 73 94 74 94 74 94 Temp 90 84 76 75 91 86 76 75 91 87 76 75 91 87 78 76 91 87 Dewpt 74 72 73 73 74 73 72 71 73 72 72 71 72 72 72 71 74 72 PWind Dir W NE N E NE S W S SW Wind Char LT LT LT LT LT LT LT LT LT Avg Clouds B1 B1 B1 SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC PoP 12hr 60 20 50 20 30 10 30 10 40 Rain shwrs S L S S C S C C C Tstms S L S S C S C C C $$ TNZ036-190800- Oak Ridge-Anderson TN 36.00N 84.24W Elev. 913 ft 523 PM EDT Fri Jul 18 2025 Date 07/18/25 Sat 07/19/25 Sun 07/20/25 Mon 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 86 72 91 73 Temp 87 77 75 73 74 81 84 84 81 76 74 73 74 83 88 88 83 78 75 74 75 Dewpt 70 73 73 73 72 74 75 74 72 73 73 73 73 76 77 76 74 75 74 73 74 RH 57 87 94100 93 79 74 72 74 90 97100 97 80 70 68 74 91 97 97 97 Wind Dir SW SW SW SW SW SW SW SW W SW SW SW SW SW W W W SW W W W Wind Spd 3 2 2 2 3 5 6 5 4 3 2 2 3 4 4 3 2 2 2 1 2 Clouds B2 OV B1 B1 B1 B1 B1 B1 B1 B1 B2 B2 B2 B1 B1 B1 B1 B1 B1 B1 B1 PoP 12hr 40 70 40 70 30 QPF 12hr 0.01 0.60 0.03 0.18 0.02 Rain shwrs C S S C L L C C S S C C L L C C S S C Tstms C S S C C C S C L L C S S S S Heat index 91 86 92 91 85 91100 99 90 Max heat 99 92 94 100 102 86 Date 07/21 Tue 07/22/25 Wed 07/23/25 Thu 07/24/25 Fri 07/25/25 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 91 72 93 72 93 73 94 73 94 Temp 90 83 75 75 91 85 76 75 90 86 76 74 91 86 76 75 91 86 Dewpt 75 74 73 73 75 73 73 72 74 73 72 71 72 72 73 72 74 73 PWind Dir W NE E N S S SW W SW Wind Char LT LT LT LT LT LT LT LT LT Avg Clouds B1 B1 B1 B1 SC SC B1 SC SC SC SC SC SC SC SC SC SC SC PoP 12hr 70 20 50 10 40 10 30 10 40 Rain shwrs C L S S C C C C Tstms C L S S C C C C $$ TNZ099-190800- Chattanooga Airport-Hamilton TN 35.03N 85.22W Elev. 688 ft 523 PM EDT Fri Jul 18 2025 Date 07/18/25 Sat 07/19/25 Sun 07/20/25 Mon EDT 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 74 89 74 93 75 Temp 88 78 76 75 75 83 86 85 83 78 76 74 76 84 90 89 85 80 77 75 76 Dewpt 72 74 73 74 73 75 74 73 73 73 73 73 74 76 75 74 74 75 75 74 75 RH 59 88 90 97 94 77 68 67 72 85 90 97 94 77 62 61 70 85 94 97 97 Wind Dir SW S SW S S SW SW SW W SW SW SW SW W W W W W W W W Wind Spd 5 2 2 2 3 5 6 8 5 2 2 2 2 4 5 6 4 2 1 1 1 Clouds B2 B2 B1 B1 B1 B1 B1 SC B1 B1 B1 B1 SC SC SC SC B1 SC SC SC SC PoP 12hr 40 70 30 60 10 QPF 12hr 0.03 0.13 0.08 0.11 0 Rain shwrs C S C C L C C S S L L S Tstms C S S C C C S L L S Heat index 94 90 94 92 89 93101 98 93 85 Max heat 100 87 95 95 84 101 101 90 Date 07/21 Tue 07/22/25 Wed 07/23/25 Thu 07/24/25 Fri 07/25/25 EDT 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 95 75 95 75 95 75 96 75 96 Temp 92 86 77 76 93 87 78 76 93 87 78 76 93 88 78 76 93 88 Dewpt 74 74 75 74 74 74 74 73 72 73 72 71 72 72 73 73 74 74 PWind Dir NW NW N SE SE SE SE S S Wind Char LT LT LT LT LT LT LT LT LT Avg Clouds SC B1 SC SC SC SC SC SC FW SC SC FW FW SC SC FW FW SC PoP 12hr 60 10 50 20 40 10 30 10 40 Rain shwrs S L S C S C C C Tstms S L S C S C C C $$ NCZ060-190800- Tusquitee RAWS-Forestry-Cherokee NC 35.07N 84.12W Elev. 1600 ft 523 PM EDT Fri Jul 18 2025 Date 07/18/25 Sat 07/19/25 Sun 07/20/25 Mon 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 87 69 89 69 Temp 85 72 70 69 70 79 84 84 78 72 71 69 71 79 85 85 79 73 72 70 71 Dewpt 71 70 70 69 69 72 71 70 70 70 70 69 70 73 73 71 72 72 71 70 71 RH 63 93100100 97 79 65 63 76 93 97100 97 82 67 63 79 97 97100100 Max/Min RH 100 61 100 61 100 Wind Dir SW S N N S SW SW SW W SW SW W W W W W NW NW N N NW Wind Dir Deg 21 18 0 0 17 23 22 23 24 21 22 26 26 28 27 27 29 29 0 0 31 Wind Spd 2 1 0 0 1 2 5 5 3 1 1 1 2 3 5 5 3 1 0 0 1 Clouds B2 B2 SC B1 B1 B1 SC B1 B1 B1 B1 B2 B2 B1 SC B1 B1 SC B1 B1 B1 Clouds (%) 77 76 47 65 64 66 43 66 55 62 56 77 82 57 50 58 57 49 56 63 61 Vsby 10 10 10 7 7 10 10 6 10 7 10 PoP 12hr 40 70 50 60 20 QPF 12hr 0.03 0.06 0.02 0.13 0.01 Rain shwrs C S S C L C C S S L L S S S Tstms C S S C C C S S L L S Heat index 90 89 88 92 90 Max heat 94 89 90 92 92 ChanceThunder 40 50 40 60 20 Max Mix Hgt AGL Mix Hgt 3600 3900 Max Vent Rt 43200 28700 T Wind Dir SW NW T Wind Spd 9 9 ADI 43 30 Max LVORI 8 8 Stability B G F B B F F B B F F Ceiling NONE NONE NONE NONE NONE NONE NONE NONE NONE NONE NONE Sta Pres 28.00 28.02 28.03 28.01 27.98 27.97 27.98 27.96 27.93 27.94 27.95 Date 07/21 Tue 07/22/25 Wed 07/23/25 Thu 07/24/25 Fri 07/25/25 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 91 68 91 67 91 67 91 68 92 Temp 88 80 71 70 87 80 70 69 88 79 70 68 88 80 71 70 88 81 Dewpt 73 72 70 70 72 71 69 67 70 70 67 66 69 70 68 68 72 72 PWind Dir NW NW NW E SE SE SE SE W Wind Char LT LT LT LT LT LT LT LT LT Avg Clouds B1 B1 SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC PoP 12hr 70 20 70 30 50 20 40 20 40 Rain shwrs S L S S L C S C S C S C Tstms S L S S C C S 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 $$