Point Forecast Matrices
Issued by NWS Knoxville/Tri Cities, TN
Issued by NWS Knoxville/Tri Cities, TN
858 FOUS54 KMRX 180621 PFMMRX Point Forecast Matrices National Weather Service Morristown TN 221 AM EDT Sat Oct 18 2025 TNZ017-182000- Tri Cities Airport-Sullivan TN 36.50N 82.41W Elev. 1536 ft 221 AM EDT Sat Oct 18 2025 Date Sat 10/18/25 Sun 10/19/25 Mon 10/20/25 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 80 58 70 40 62 Temp 51 50 67 77 79 70 63 61 60 59 66 66 60 52 48 46 42 40 51 59 62 53 Dewpt 48 48 58 61 61 61 60 58 57 54 58 60 57 50 45 43 40 39 43 41 40 40 RH 89 93 73 58 54 73 90 90 90 83 75 81 90 93 89 89 93 96 74 51 44 61 Wind Dir E E SW SW SW S S SE SE S S SW SW W W W W W W W W S Wind Spd 1 1 4 9 6 3 4 5 8 10 14 19 19 12 10 6 5 4 5 6 5 2 Wind Gust 25 29 23 20 Clouds B1 SC FW FW FW SC SC SC B1 B1 B2 OV B2 B1 SC SC FW FW CL CL CL CL PoP 12hr 5 10 100 30 0 QPF 12hr 0 0 0.48 0.04 0 Rain shwrs D D D D C C Tstms S S Date Tue 10/21/25 Wed 10/22/25 Thu 10/23/25 Fri 10/24/25 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 40 67 38 60 33 65 41 66 Temp 42 41 65 58 44 38 57 51 38 34 61 55 45 41 63 57 Dewpt 37 35 47 46 39 36 37 37 36 33 39 41 39 38 44 45 PWind Dir S SW W W W SW SE SW Wind Char LT GN LT GN LT LT LT LT Avg Clouds CL FW FW FW FW FW FW FW FW FW FW SC SC B1 SC SC PoP 12hr 0 5 5 0 0 5 5 10 $$ TNZ071-182000- Knoxville McGhee Tyson Airport-Blount TN 35.80N 83.98W Elev. 979 ft 221 AM EDT Sat Oct 18 2025 Date Sat 10/18/25 Sun 10/19/25 Mon 10/20/25 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 84 62 70 42 67 Temp 56 56 72 82 82 74 70 69 68 64 65 65 63 55 50 47 44 43 54 64 67 58 Dewpt 54 54 61 63 63 63 62 60 57 59 61 62 55 49 47 44 42 41 44 42 41 42 RH 93 93 68 53 53 69 76 73 68 84 87 90 75 80 89 89 93 93 69 45 39 55 Wind Dir N E SW SW SW S S S S S S SW W W W SW SW SW W W W S Wind Spd 4 4 8 12 12 9 11 12 14 17 19 21 20 10 6 4 3 2 2 3 3 3 Wind Gust 21 24 27 29 Clouds SC SC FW FW FW FW SC B1 B1 OV B2 B2 SC SC FW FW FW FW CL CL CL CL PoP 12hr 5 60 100 5 0 QPF 12hr 0 0.02 0.41 0 0 Rain shwrs D D C C Tstms S C Date Tue 10/21/25 Wed 10/22/25 Thu 10/23/25 Fri 10/24/25 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 47 72 42 65 39 68 46 69 Temp 48 48 69 62 48 42 62 55 43 39 65 59 50 46 66 61 Dewpt 40 40 49 46 42 39 39 39 39 37 42 43 42 41 47 47 PWind Dir S SW W W NE N E N Wind Char LT GN LT LT LT LT LT LT Avg Clouds FW FW FW FW FW FW FW FW FW FW FW SC SC B1 SC SC PoP 12hr 5 5 5 0 0 0 10 10 $$ TNZ036-182000- Oak Ridge-Anderson TN 36.00N 84.24W Elev. 913 ft 221 AM EDT Sat Oct 18 2025 Date Sat 10/18/25 Sun 10/19/25 Mon 10/20/25 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 82 61 67 39 66 Temp 56 55 70 80 81 72 69 68 66 63 64 65 61 53 47 45 42 40 54 64 66 56 Dewpt 55 55 61 64 64 64 63 61 57 60 62 61 54 48 46 43 42 40 45 43 43 43 RH 96100 73 58 56 76 81 78 73 90 93 87 78 83 96 93100100 71 46 43 62 Wind Dir SW W SW SW SW S S S S S S SW W W W W W W SW SW SW SW Wind Spd 2 2 6 9 10 6 9 9 11 13 16 17 16 6 4 2 2 2 2 2 2 2 Wind Gust 18 25 28 32 31 28 29 28 19 Clouds SC SC FW FW FW SC SC B2 B2 OV B2 B1 SC FW FW FW FW FW CL CL CL CL PoP 12hr 10 70 100 5 0 QPF 12hr 0 0.05 0.54 0 0 Rain shwrs D D C C Tstms S C Date Tue 10/21/25 Wed 10/22/25 Thu 10/23/25 Fri 10/24/25 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 45 70 40 64 37 68 46 68 Temp 47 46 68 60 46 40 62 53 41 38 64 58 49 46 65 59 Dewpt 41 41 51 45 39 37 39 40 38 37 42 43 42 41 48 47 PWind Dir SW SW W NW N E NE S Wind Char LT GN LT LT LT LT LT LT Avg Clouds FW FW FW FW FW FW FW CL FW FW SC SC SC B1 B1 SC PoP 12hr 5 10 5 0 0 5 10 10 $$ TNZ099-182000- Chattanooga Airport-Hamilton TN 35.03N 85.22W Elev. 688 ft 221 AM EDT Sat Oct 18 2025 Date Sat 10/18/25 Sun 10/19/25 Mon 10/20/25 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 84 63 70 44 70 Temp 59 60 73 82 83 77 71 70 68 65 67 68 65 56 51 48 46 44 57 67 69 60 Dewpt 57 57 62 65 65 65 63 60 60 63 63 60 53 48 47 45 44 42 44 43 43 45 RH 93 90 68 56 55 67 76 71 76 93 87 76 65 74 86 89 93 93 62 42 39 58 Wind Dir S S S SW S S S S S S S W W NW NW NW NW NW N NW SW S Wind Spd 5 5 8 10 11 10 12 12 14 16 16 18 17 9 5 2 2 2 2 3 4 3 Wind Gust 24 25 28 27 26 28 Clouds FW FW FW SC SC FW SC B1 B1 OV B2 SC FW FW CL CL CL FW CL CL CL CL PoP 12hr 10 80 80 0 0 QPF 12hr 0 0.25 0.39 0 0 Rain shwrs C D D S S Tstms S S S Date Tue 10/21/25 Wed 10/22/25 Thu 10/23/25 Fri 10/24/25 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 46 74 44 67 41 71 49 72 Temp 48 47 71 64 50 44 65 57 45 41 67 61 51 49 69 63 Dewpt 43 43 52 48 42 39 39 40 40 39 42 44 44 44 48 48 PWind Dir S W NW NW N NE NE SE Wind Char LT GN LT LT LT LT LT LT Avg Clouds CL FW FW FW FW CL CL CL FW FW FW SC SC B1 SC SC PoP 12hr 5 10 0 0 0 0 10 10 $$ NCZ060-182000- Tusquitee RAWS-Forestry-Cherokee NC 35.07N 84.12W Elev. 1600 ft 221 AM EDT Sat Oct 18 2025 Date Sat 10/18/25 Sun 10/19/25 Mon 10/20/25 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 79 57 67 37 67 Temp 53 52 67 77 77 68 64 62 61 59 61 65 61 52 46 43 40 38 52 64 66 56 Dewpt 51 51 58 62 62 62 60 57 54 56 60 60 54 48 44 41 38 37 41 38 38 40 RH 93 96 73 60 60 81 87 84 78 90 97 84 78 86 93 93 92 96 66 38 36 55 Min/Max RH 56 100 78 100 34 Wind Dir E E S SW S S SE SE S S S SW W NW NW NW NW N NW NW W SW Wind Dir Deg 11 11 18 20 19 16 15 15 16 16 17 21 28 30 31 31 31 33 32 29 27 22 Wind Spd 1 2 4 6 6 5 6 6 9 11 13 13 14 9 5 2 2 2 3 4 4 2 Wind Gust 20 24 26 28 25 21 18 12 Clouds SC B1 FW SC FW FW SC B1 B1 OV OV B2 B1 SC FW FW FW FW FW CL CL CL Clouds (%) 30 53 25 35 22 23 46 54 62 95 93 77 52 27 17 9 12 19 6 5 3 4 Vsby 10 10 10 10 10 10 10 10 10 6 6 10 10 10 10 10 10 10 10 10 PoP 12hr 5 60 100 5 0 QPF 12hr 0 0.03 0.47 0 0 Rain shwrs S D D C C Tstms S S ChanceThunder 5 5 20 0 0 Max Mix Hgt AGL Mix Hgt 4200 4100 3400 Max Vent Rt 32800 81400 20200 T Wind Dir S SW NW T Wind Spd 8 18 5 ADI 33 81 21 Max LVORI 10 5 6 Stability F B B E D C B G G B B Ceiling NONE 10800 NONE NONE NONE 12700 6300 NONE NONE NONE 25000 Sta Pres 27.92 27.88 27.86 27.80 27.74 27.75 27.86 27.90 27.96 27.95 27.92 Date Tue 10/21/25 Wed 10/22/25 Thu 10/23/25 Fri 10/24/25 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 39 71 39 63 34 70 42 69 Temp 42 40 68 60 46 39 60 52 39 35 68 54 46 43 68 55 Dewpt 38 36 49 47 40 34 35 37 36 32 38 41 40 39 45 46 PWind Dir SE W NW NW N SW E SE Wind Char LT LT LT LT LT LT LT LT Avg Clouds FW FW FW FW FW FW FW CL FW FW SC SC SC B1 B1 SC PoP 12hr 5 5 5 0 0 0 5 10 This is an experimental product for planning and review purposes only, and is not to be substituted for an official fire weather spot forecast $$