Point Forecast Matrices
Issued by NWS Knoxville/Tri Cities, TN
Issued by NWS Knoxville/Tri Cities, TN
802 FOUS54 KMRX 190532 PFMMRX Point Forecast Matrices National Weather Service Morristown TN 132 AM EDT Tue Aug 19 2025 TNZ017-192000- Tri Cities Airport-Sullivan TN 36.50N 82.41W Elev. 1536 ft 132 AM EDT Tue Aug 19 2025 Date Tue 08/19/25 Wed 08/20/25 Thu 08/21/25 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 89 67 88 68 85 Temp 69 70 80 86 87 82 74 70 69 69 79 84 84 78 72 70 69 69 76 81 81 76 Dewpt 67 68 71 71 69 70 68 68 67 67 70 71 71 71 69 69 68 68 71 71 70 70 RH 93 93 74 61 55 67 82 93 93 93 74 65 65 79 90 97 97 97 85 72 69 82 Wind Dir NE E S NW NW SE SE E E SE SW W NW NE NE NE NE NE N N N N Wind Spd 2 2 2 2 3 3 2 2 1 1 2 3 4 3 2 1 1 2 2 5 5 4 Clouds SC SC FW SC SC FW FW FW SC B1 SC SC SC B1 SC SC B1 B1 B1 B1 B1 SC PoP 12hr 10 5 50 30 50 QPF 12hr 0 0 0.09 0.14 0.08 Rain shwrs C C C C S S C C S Tstms C C C S S C C S Heat index 84 91 91 86 90 90 85 85 Max heat 92 94 92 93 87 87 Date Fri 08/22/25 Sat 08/23/25 Sun 08/24/25 Mon 08/25/25 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 67 84 66 82 66 81 60 80 Temp 69 68 80 77 68 68 78 74 68 67 77 74 64 61 76 70 Dewpt 68 67 70 69 66 66 70 69 67 66 69 66 61 60 59 57 PWind Dir NE SE SE S S SW W W Wind Char LT LT LT LT LT LT LT LT Avg Clouds SC B1 B1 B1 SC SC B1 SC B1 B1 B1 SC SC SC SC FW PoP 12hr 20 40 30 60 40 40 10 5 Rain shwrs S S C C S C L C C C C Tstms S S C S S C S C $$ TNZ071-192000- Knoxville McGhee Tyson Airport-Blount TN 35.80N 83.98W Elev. 979 ft 132 AM EDT Tue Aug 19 2025 Date Tue 08/19/25 Wed 08/20/25 Thu 08/21/25 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 93 72 91 71 88 Temp 73 73 84 90 91 85 78 75 73 73 82 88 88 80 75 74 72 72 79 85 86 80 Dewpt 69 70 73 73 72 71 71 71 70 71 73 74 73 72 72 72 71 71 73 73 73 71 RH 87 90 70 58 54 63 79 87 90 93 74 63 61 77 90 93 97 97 82 67 65 74 Wind Dir S SE W W SW S SW W SW S SW W N N NE NE NE NE NE N N NE Wind Spd 1 1 1 2 3 3 2 2 2 2 2 3 4 4 2 2 2 2 3 5 5 5 Clouds FW FW FW FW SC SC SC FW SC SC SC SC SC B1 B1 SC B1 B1 B1 SC SC SC PoP 12hr 20 5 40 20 40 QPF 12hr 0 0 0.13 0.10 0.07 Rain shwrs C C S S C C Tstms C C S C C Heat index 90 98 99 90 87 97 96 84 92 93 83 Max heat 98 101 86 97 98 92 93 Date Fri 08/22/25 Sat 08/23/25 Sun 08/24/25 Mon 08/25/25 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 70 86 70 85 69 85 63 83 Temp 72 71 84 79 72 70 82 78 72 70 82 78 68 64 80 74 Dewpt 70 70 73 71 70 70 73 71 70 68 71 66 64 62 61 59 PWind Dir NE S S SW SW W NW N Wind Char LT LT LT LT LT LT LT LT Avg Clouds SC B1 B1 B1 B1 B1 B1 SC SC B1 B1 SC SC SC FW FW PoP 12hr 10 50 30 50 30 30 5 5 Rain shwrs S C C S C C C S S C Tstms S C C S C S C $$ TNZ036-192000- Oak Ridge-Anderson TN 36.00N 84.24W Elev. 913 ft 132 AM EDT Tue Aug 19 2025 Date Tue 08/19/25 Wed 08/20/25 Thu 08/21/25 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 93 72 90 70 87 Temp 72 72 83 91 91 85 78 75 73 73 81 88 84 79 75 73 72 71 79 85 84 80 Dewpt 67 68 73 73 72 72 71 71 70 71 74 75 74 72 72 71 71 70 73 73 73 71 RH 84 87 72 56 54 65 79 87 90 93 79 66 72 79 90 93 97 97 82 67 70 74 Wind Dir E NE SW SW SW S SW SW SW SW SW SW NW N N N N N NE N N N Wind Spd 1 1 1 2 2 2 2 2 2 1 2 2 2 2 2 2 2 2 2 3 4 3 Clouds FW FW FW FW SC SC SC FW SC SC SC SC B1 B1 B1 SC B1 B1 B1 B1 B1 SC PoP 12hr 10 5 50 20 40 QPF 12hr 0 0 0.16 0.01 0.04 Rain shwrs C C S S C C Tstms C C S C C Heat index 89100 99 91 86 98 91 92 90 83 Max heat 100 100 87 98 98 92 92 Date Fri 08/22/25 Sat 08/23/25 Sun 08/24/25 Mon 08/25/25 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 87 69 84 69 85 62 83 Temp 72 71 84 78 72 70 82 77 71 70 83 76 67 63 81 73 Dewpt 70 69 74 71 70 70 73 71 69 68 70 66 61 59 61 58 PWind Dir NE S SW SW W W NW NW Wind Char LT LT LT LT LT LT LT LT Avg Clouds SC B1 B1 B1 SC SC B1 SC SC SC B1 SC FW FW FW FW PoP 12hr 10 50 20 50 30 30 5 5 Rain shwrs S C S S C C C S S C Tstms S C S S C S S C $$ TNZ099-192000- Chattanooga Airport-Hamilton TN 35.03N 85.22W Elev. 688 ft 132 AM EDT Tue Aug 19 2025 Date Tue 08/19/25 Wed 08/20/25 Thu 08/21/25 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 94 72 93 72 89 Temp 75 74 84 91 91 84 78 75 73 73 84 90 86 80 75 74 73 73 81 86 86 80 Dewpt 72 72 74 74 72 73 73 72 72 72 74 74 73 73 73 72 72 71 74 74 73 73 RH 90 93 72 58 54 70 85 90 97 97 72 60 65 79 94 93 97 93 79 68 65 79 Wind Dir E E S E E S S S S S S W NW N N N N N N N N N Wind Spd 1 1 2 2 2 3 2 1 1 1 2 2 3 3 2 2 2 2 3 4 5 4 Clouds FW FW FW FW SC SC FW FW FW FW FW SC SC B1 SC SC SC SC B1 SC SC B1 PoP 12hr 20 10 50 10 40 QPF 12hr 0 0 0.11 0 0.06 Rain shwrs S C C C C Tstms S C C C C Heat index 91101 99 90 91 99 93 84 86 94 93 84 Max heat 101 101 86 99 99 94 95 Date Fri 08/22/25 Sat 08/23/25 Sun 08/24/25 Mon 08/25/25 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 71 86 71 84 70 87 64 85 Temp 73 72 83 78 72 72 80 77 72 70 84 78 69 65 81 75 Dewpt 71 71 74 72 71 71 73 72 70 69 71 68 64 62 62 61 PWind Dir N SE SE SE S NW N N Wind Char LT LT LT LT LT LT LT LT Avg Clouds SC B1 B1 B1 SC B1 B1 B1 SC SC SC SC FW FW FW FW PoP 12hr 10 60 20 60 20 30 5 5 Rain shwrs C L S S C L S S C Tstms S L S S C S S C $$ NCZ060-192000- Tusquitee RAWS-Forestry-Cherokee NC 35.07N 84.12W Elev. 1600 ft 132 AM EDT Tue Aug 19 2025 Date Tue 08/19/25 Wed 08/20/25 Thu 08/21/25 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 67 89 67 86 Temp 68 69 80 86 82 75 71 69 68 67 79 85 83 76 70 69 67 68 78 83 81 75 Dewpt 67 69 73 72 72 71 70 69 67 67 72 72 71 71 70 69 67 68 72 72 71 71 RH 97100 79 63 72 87 97100 97100 79 65 67 85100100100100 82 70 72 87 Min/Max RH 63 100 65 100 69 Wind Dir E E SE W SE SE E E N SE S NW NW NW N N N N NW NW NW N Wind Dir Deg 11 11 14 27 14 14 11 11 0 12 18 31 31 31 0 0 0 0 31 30 31 34 Wind Spd 1 1 1 2 2 2 1 1 0 1 1 2 3 2 1 0 0 0 2 3 3 2 Clouds SC SC SC SC B1 B1 B1 SC SC B1 SC SC SC B1 SC B1 B1 B2 SC SC B1 B1 Clouds (%) 37 34 33 40 64 58 54 40 39 66 30 32 45 53 39 54 64 73 45 49 56 60 Vsby 7 7 10 10 10 10 7 7 7 7 10 6 PoP 12hr 60 20 60 20 60 QPF 12hr 0.32 0.01 0.12 0.03 0.26 Rain shwrs C C S L L S S S S L L C Tstms C C S L L S S C C S Heat index 84 92 87 91 88 88 85 Max heat 92 92 91 91 88 88 ChanceThunder 60 20 60 20 50 Max Mix Hgt AGL Mix Hgt 4300 4900 4200 Max Vent Rt 17700 24300 16700 T Wind Dir SE NE N T Wind Spd 4 4 3 ADI 18 24 17 Max LVORI 10 10 10 Stability G A B G F A B F F A B Ceiling 20800 NONE NONE NONE NONE NONE NONE NONE NONE NONE NONE Sta Pres 27.98 27.95 27.90 27.90 27.90 27.84 27.77 27.77 27.78 27.78 27.77 Date Fri 08/22/25 Sat 08/23/25 Sun 08/24/25 Mon 08/25/25 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 66 83 66 82 64 84 60 83 Temp 68 67 79 73 67 67 78 72 66 65 80 74 64 61 80 70 Dewpt 68 67 71 70 67 67 71 68 66 65 68 66 62 59 60 59 PWind Dir NE SE SE SE SE NW NW NW Wind Char LT LT LT LT LT LT LT LT Avg Clouds B1 B2 B2 B1 B1 B1 B1 B1 B1 B1 B1 SC SC SC SC FW PoP 12hr 30 70 40 70 30 40 10 10 Rain shwrs C S C L C C C L C S S C Tstms S C C C S C S 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 $$