Point Forecast Matrices
Issued by NWS Knoxville/Tri Cities, TN
Issued by NWS Knoxville/Tri Cities, TN
437 FOUS54 KMRX 220543 PFMMRX Point Forecast Matrices National Weather Service Morristown TN 143 AM EDT Tue Jul 22 2025 TNZ017-222000- Tri Cities Airport-Sullivan TN 36.50N 82.41W Elev. 1536 ft 143 AM EDT Tue Jul 22 2025 Date Tue 07/22/25 Wed 07/23/25 Thu 07/24/25 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 88 68 89 65 90 Temp 69 70 78 84 86 81 74 71 68 70 80 85 87 82 74 69 66 69 80 86 89 83 Dewpt 69 70 72 72 71 71 70 68 66 67 69 69 67 67 64 63 63 65 69 68 68 71 RH 100100 82 67 61 72 87 90 93 90 69 59 52 61 71 81 90 87 69 55 50 67 Wind Dir NE E NE NE NE NE E E E E SE SE SE SE SE E E E SE S S S Wind Spd 1 1 2 2 3 3 2 2 2 2 3 4 5 5 4 2 2 2 2 3 3 3 Clouds B1 B1 SC SC SC FW FW FW FW FW FW FW FW FW FW CL FW FW FW FW FW FW PoP 12hr 40 10 20 5 20 QPF 12hr 0.05 0 0 0 0 Rain shwrs S C C S S S S Tstms S C C S S S S Obvis PF PF Heat index 89 91 85 83 89 91 85 84 89 93 88 Max heat 90 94 90 92 82 91 94 Date Fri 07/25/25 Sat 07/26/25 Sun 07/27/25 Mon 07/28/25 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 69 89 70 88 70 88 70 90 Temp 72 71 84 83 72 72 84 81 73 72 83 81 72 72 85 83 Dewpt 69 69 72 72 70 71 73 73 71 72 74 73 72 71 73 72 PWind Dir SE SW S SW SW W SW NW Wind Char LT LT LT LT LT LT LT LT Avg Clouds FW FW SC SC SC SC SC SC B1 B1 B1 B1 SC SC SC FW PoP 12hr 10 40 10 50 30 60 30 30 Rain shwrs S C S C C S S L C C Tstms S C S C C S C C C $$ TNZ071-222000- Knoxville McGhee Tyson Airport-Blount TN 35.80N 83.98W Elev. 979 ft 143 AM EDT Tue Jul 22 2025 Date Tue 07/22/25 Wed 07/23/25 Thu 07/24/25 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 91 72 92 71 93 Temp 73 73 82 89 90 86 80 76 73 75 85 90 91 85 79 76 73 74 85 91 92 86 Dewpt 71 72 74 74 73 73 73 72 70 71 72 72 71 71 71 71 68 67 70 70 70 71 RH 93 97 77 61 58 65 79 87 90 87 65 56 52 63 77 85 84 79 61 50 49 61 Wind Dir E NE N N N NE NE NE N E E NE E S SE SE SE E E E S S Wind Spd 1 1 2 3 4 3 2 2 1 1 1 2 3 3 2 2 2 2 2 2 3 3 Clouds B2 B1 SC SC FW FW SC SC SC FW FW SC SC SC SC FW FW FW FW FW FW SC PoP 12hr 40 10 40 5 30 QPF 12hr 0 0 0.05 0 0.01 Rain shwrs C C C C C C Tstms C C C C C C Obvis PF PF Heat index 88 98 98 93 84 91 97 98 90 90 97 98 91 Max heat 98 99 89 97 99 88 97 98 Date Fri 07/25/25 Sat 07/26/25 Sun 07/27/25 Mon 07/28/25 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 73 92 74 90 74 91 74 94 Temp 77 75 90 85 76 76 88 84 76 75 89 85 77 76 91 87 Dewpt 72 71 72 71 71 72 75 73 73 73 75 74 73 74 74 72 PWind Dir S SW SW SW SW W S N Wind Char LT LT LT LT LT LT LT LT Avg Clouds SC SC FW SC SC SC SC SC B1 SC B1 SC SC SC SC FW PoP 12hr 10 40 20 50 20 50 20 20 Rain shwrs C S S C S S C S S Tstms C S S C S S C S S $$ TNZ036-222000- Oak Ridge-Anderson TN 36.00N 84.24W Elev. 913 ft 143 AM EDT Tue Jul 22 2025 Date Tue 07/22/25 Wed 07/23/25 Thu 07/24/25 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 91 71 93 72 93 Temp 72 73 82 88 90 85 78 75 73 74 85 91 91 85 78 76 73 74 84 91 91 85 Dewpt 71 72 75 74 74 73 72 71 69 71 74 73 72 72 71 71 70 70 71 70 70 71 RH 97 97 79 63 60 67 82 87 87 90 70 56 54 65 79 85 90 87 65 50 50 63 Wind Dir E NE NE NE N NE NE NE NE NE S S SE SE S SW E E SE SE S S Wind Spd 1 1 1 2 2 2 2 2 1 1 1 2 2 2 1 1 1 1 2 2 2 2 Clouds B2 B1 B1 SC SC FW SC FW SC SC FW FW FW SC SC SC FW FW FW FW FW SC PoP 12hr 40 5 40 5 30 QPF 12hr 0.02 0 0.05 0 0.01 Rain shwrs C C C C C C Tstms C C C C C C Obvis PF PF Heat index 89 97 99 92 93100 99 91 89 97 97 90 Max heat 97 99 87 100 101 87 97 98 Date Fri 07/25/25 Sat 07/26/25 Sun 07/27/25 Mon 07/28/25 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 73 91 72 90 73 92 73 94 Temp 76 75 89 84 76 75 88 83 75 75 90 84 76 75 92 86 Dewpt 71 72 73 71 72 72 75 73 73 73 75 75 74 74 74 73 PWind Dir SW SW SW SW SW SW NW N Wind Char LT LT LT LT LT LT LT LT Avg Clouds SC SC SC SC SC SC SC SC B1 B1 B1 B1 SC SC SC SC PoP 12hr 10 40 10 50 30 50 20 30 Rain shwrs C S C C S S C S C Tstms C S C S S C S C $$ TNZ099-222000- Chattanooga Airport-Hamilton TN 35.03N 85.22W Elev. 688 ft 143 AM EDT Tue Jul 22 2025 Date Tue 07/22/25 Wed 07/23/25 Thu 07/24/25 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 94 74 92 73 92 Temp 74 75 84 90 91 86 80 77 76 76 84 90 90 85 78 76 74 74 84 89 89 85 Dewpt 72 73 75 75 74 74 75 74 73 74 74 74 74 74 73 71 69 70 72 73 73 73 RH 93 94 74 62 58 68 85 90 90 94 72 60 60 70 85 85 84 87 67 59 59 67 Wind Dir NW N N N N N N NE E SE SE SE SE SE SE SE SE E SE SE SE SE Wind Spd 1 1 2 3 5 3 2 1 1 1 2 4 5 3 2 1 1 2 4 5 6 3 Clouds SC SC SC FW FW SC FW SC SC FW SC SC SC FW FW FW FW FW FW FW SC SC PoP 12hr 50 5 40 5 40 QPF 12hr 0.02 0 0.06 0 0.06 Rain shwrs C C C C C C Tstms C C C C C C Obvis PF PF Heat index 92101101 94 85 91 99 99 93 90 97 97 92 Max heat 101 103 90 99 101 89 97 98 Date Fri 07/25/25 Sat 07/26/25 Sun 07/27/25 Mon 07/28/25 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 74 92 74 92 75 94 75 96 Temp 77 75 88 85 76 75 90 85 77 76 91 86 78 77 92 87 Dewpt 73 73 74 74 74 73 74 73 74 74 74 74 75 74 75 74 PWind Dir SE S S SW SW W NW N Wind Char LT LT LT LT LT LT LT LT Avg Clouds SC SC SC SC SC SC SC SC SC SC SC B1 SC SC SC SC PoP 12hr 10 50 20 50 20 50 10 30 Rain shwrs C S S C S C C Tstms C S S C S C C $$ NCZ060-222000- Tusquitee RAWS-Forestry-Cherokee NC 35.07N 84.12W Elev. 1600 ft 143 AM EDT Tue Jul 22 2025 Date Tue 07/22/25 Wed 07/23/25 Thu 07/24/25 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 88 68 88 65 89 Temp 68 69 80 86 85 79 72 71 68 70 80 85 85 79 72 69 66 68 80 85 84 79 Dewpt 67 68 73 73 73 72 71 69 67 68 71 70 70 69 66 64 63 65 70 70 70 71 RH 97 97 79 65 67 79 97 93 97 93 74 61 61 72 81 84 90 90 72 61 63 77 Min/Max RH 63 100 59 93 59 Wind Dir N N NW NW N N E SE E E SE SE SE SE SE E E E SE SE SE SE Wind Dir Deg 0 0 32 30 33 2 10 12 10 11 12 15 14 12 12 11 11 11 13 14 14 14 Wind Spd 0 0 1 3 3 2 1 2 2 2 3 4 4 2 2 2 2 2 3 5 4 2 Clouds B1 B1 FW SC SC SC SC FW SC SC SC SC SC SC FW FW FW FW FW SC SC SC Clouds (%) 58 54 25 44 41 40 34 24 29 26 35 33 37 37 17 8 22 19 19 30 31 27 Vsby 7 8 10 6 6 10 10 9 7 7 10 6 PoP 12hr 60 20 60 10 40 QPF 12hr 0.04 0.01 0.11 0 0.15 Rain shwrs L L S C C L L C C S Tstms L L S S C C C C S Obvis PF PF Heat index 84 93 92 83 90 90 83 90 88 Max heat 93 94 90 91 90 89 ChanceThunder 60 20 50 10 40 Max Mix Hgt AGL Mix Hgt 4400 4200 5000 Max Vent Rt 29600 28200 30300 T Wind Dir N SE SE T Wind Spd 5 6 8 ADI 30 30 32 Max LVORI 10 6 6 Stability F A B G G A A G G A A Ceiling NONE NONE NONE 7200 6300 8900 17100 13800 11700 20800 NONE Sta Pres 27.94 27.93 27.90 27.96 28.00 28.02 28.00 28.03 28.06 28.04 28.02 Date Fri 07/25/25 Sat 07/26/25 Sun 07/27/25 Mon 07/28/25 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 68 89 67 90 68 90 68 92 Temp 70 69 84 78 70 70 86 79 70 70 87 80 71 70 89 81 Dewpt 69 69 73 72 70 69 72 72 70 69 72 72 70 70 72 71 PWind Dir SE S SE W W NW N NW Wind Char LT LT LT LT LT LT LT LT Avg Clouds SC SC SC SC SC SC SC SC SC SC SC B1 SC SC SC SC PoP 12hr 20 60 20 60 30 60 30 40 Rain shwrs S S L S S L C S L C C Tstms S S C S S L S 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 $$