Point Forecast Matrices
Issued by NWS Knoxville/Tri Cities, TN
Issued by NWS Knoxville/Tri Cities, TN
116 FOUS54 KMRX 181817 PFMMRX Point Forecast Matrices National Weather Service Morristown TN 217 PM EDT Mon Aug 18 2025 TNZ017-190800- Tri Cities Airport-Sullivan TN 36.50N 82.41W Elev. 1536 ft 217 PM EDT Mon Aug 18 2025 Date 08/18/25 Tue 08/19/25 Wed 08/20/25 Thu 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 89 68 89 68 Temp 87 81 73 71 69 70 80 85 87 81 74 71 69 69 79 85 86 79 72 70 68 69 Dewpt 66 68 67 67 67 66 69 69 68 68 69 69 67 67 70 70 70 69 69 68 67 67 RH 50 65 81 87 93 87 69 59 53 65 84 93 93 93 74 61 59 72 90 93 97 93 Wind Dir N N E E E E SE N E SE SE SE E E SW NW N S NE E NE E Wind Spd 5 3 2 2 2 2 2 2 2 3 2 2 2 1 2 3 4 3 2 1 1 1 Clouds FW FW FW SC SC FW FW FW FW FW SC FW SC SC FW FW SC SC SC SC SC SC PoP 12hr 5 20 5 40 20 QPF 12hr 0 0.02 0 0.05 0.02 Rain shwrs S C C S S S Tstms S C C S Obvis PF PF Heat index 84 89 91 84 90 91 Max heat 92 91 92 91 93 Date 08/21 Fri 08/22/25 Sat 08/23/25 Sun 08/24/25 Mon 08/25/25 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 86 66 84 66 82 66 82 61 81 Temp 82 77 68 68 82 77 68 68 78 75 68 67 78 74 64 63 76 71 Dewpt 70 69 67 66 69 69 66 66 70 68 66 66 69 64 61 60 60 58 PWind Dir N NE S SE SW S W W NW Wind Char LT LT LT LT LT LT LT LT LT Avg Clouds B1 B1 SC SC B1 B1 SC B1 B1 SC SC B1 B1 SC SC SC SC SC PoP 12hr 40 10 40 30 50 30 40 10 5 Rain shwrs S C S C C S C C C S C C Tstms S C S C C S C S C $$ TNZ071-190800- Knoxville McGhee Tyson Airport-Blount TN 35.80N 83.98W Elev. 979 ft 217 PM EDT Mon Aug 18 2025 Date 08/18/25 Tue 08/19/25 Wed 08/20/25 Thu EDT 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 71 92 72 92 71 Temp 91 85 79 75 73 73 83 90 91 85 78 75 73 73 83 89 90 82 77 74 72 72 Dewpt 69 69 69 70 68 68 71 70 68 68 71 71 70 70 73 73 71 71 72 71 70 70 RH 49 59 72 84 84 84 67 52 47 57 79 87 90 90 72 59 54 69 85 90 93 93 Wind Dir N NE NE N NE NE W NW NW SW S SW S S W NW N NE NE NE NE NE Wind Spd 5 4 3 2 2 2 2 2 3 3 2 2 2 2 2 3 5 3 2 2 2 2 Clouds FW FW FW FW FW FW SC SC FW SC SC FW FW SC FW SC FW SC SC SC SC SC PoP 12hr 0 20 10 40 20 QPF 12hr 0 0 0 0 0 Rain shwrs S C C S S Tstms S C C S S Heat index 96 89 88 96 95 88 89 97 96 86 Max heat 98 86 96 97 85 97 99 83 Date 08/21 Fri 08/22/25 Sat 08/23/25 Sun 08/24/25 Mon 08/25/25 EDT 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 90 71 86 70 85 69 85 64 84 Temp 86 81 74 71 86 79 72 71 82 79 72 70 82 77 68 65 80 75 Dewpt 73 71 70 69 72 71 70 69 73 70 70 69 71 66 64 63 63 60 PWind Dir N NE NW S SW SW W N N Wind Char LT LT LT LT LT LT LT LT LT Avg Clouds SC SC SC SC B1 SC B1 B1 B1 SC SC SC SC SC SC SC SC FW PoP 12hr 40 10 40 30 40 30 30 5 5 Rain shwrs C S C C S C C C S S C Tstms C S C C S S C S C $$ TNZ036-190800- Oak Ridge-Anderson TN 36.00N 84.24W Elev. 913 ft 217 PM EDT Mon Aug 18 2025 Date 08/18/25 Tue 08/19/25 Wed 08/20/25 Thu 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 93 72 92 71 Temp 91 85 77 75 72 72 83 90 91 85 78 74 72 73 83 90 87 81 76 74 72 72 Dewpt 70 69 68 67 66 67 71 71 70 70 71 71 70 70 73 73 73 72 72 71 69 70 RH 50 59 74 76 81 84 67 54 50 61 79 90 93 90 72 58 63 74 87 90 90 93 Wind Dir NE NE NE NE NE NE SW W NW S W W SW SW SW W NW N N N N N Wind Spd 3 2 2 2 2 1 1 2 2 2 1 1 1 1 2 2 2 2 2 2 2 2 Clouds SC FW FW FW FW FW FW FW FW SC FW FW SC SC SC SC SC SC SC SC SC SC PoP 12hr 0 10 5 40 10 QPF 12hr 0 0 0 0 0 Rain shwrs C C S Tstms C C Heat index 97 89 88 96 97 90 89 98 94 85 Max heat 98 84 96 98 86 98 98 Date 08/21 Fri 08/22/25 Sat 08/23/25 Sun 08/24/25 Mon 08/25/25 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 89 69 86 69 85 69 85 62 83 Temp 87 80 73 71 86 79 71 70 83 78 71 70 83 77 67 64 80 73 Dewpt 73 71 69 69 73 71 69 69 73 71 69 69 71 67 62 60 62 60 PWind Dir N NE S SW SW SW W N NW Wind Char LT LT LT LT LT LT LT LT LT Avg Clouds SC B1 SC B1 B1 B1 SC B1 B1 SC SC SC B1 SC FW SC SC SC PoP 12hr 40 10 40 20 40 20 30 5 5 Rain shwrs S C S C S S C C S S C Tstms S C S C S S S C S S C $$ TNZ099-190800- Chattanooga Airport-Hamilton TN 35.03N 85.22W Elev. 688 ft 217 PM EDT Mon Aug 18 2025 Date 08/18/25 Tue 08/19/25 Wed 08/20/25 Thu EDT 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 73 93 73 93 73 Temp 92 86 80 77 74 74 85 90 90 84 78 76 74 74 83 90 89 84 78 76 74 74 Dewpt 71 72 72 72 71 70 72 72 70 71 73 72 72 72 73 73 72 72 73 72 71 71 RH 51 63 77 85 90 87 65 56 52 65 85 87 93 93 72 58 57 67 85 87 90 90 Wind Dir N NE N E NE E S W E SE S S S S S NW N N N N N N Wind Spd 5 3 2 2 1 1 2 2 2 2 2 1 1 1 2 2 4 2 2 1 1 2 Clouds FW FW FW FW FW FW FW SC FW FW FW FW FW FW FW FW SC SC SC SC SC SC PoP 12hr 5 20 5 40 10 QPF 12hr 0 0.01 0 0.01 0 Rain shwrs S C C Tstms S C C Heat index 99 92 84 91 97 96 89 89 98 96 90 Max heat 100 88 97 99 87 98 100 87 Date 08/21 Fri 08/22/25 Sat 08/23/25 Sun 08/24/25 Mon 08/25/25 EDT 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 91 71 85 71 85 70 87 65 85 Temp 88 81 74 72 84 79 73 72 82 79 72 71 84 78 70 66 80 76 Dewpt 73 72 71 70 73 72 71 71 73 72 71 70 72 69 65 63 63 62 PWind Dir N NE SE SE S S NW N N Wind Char LT LT LT LT LT LT LT LT LT Avg Clouds SC SC SC SC B1 B1 B1 B1 B1 B1 SC SC SC SC FW FW FW SC PoP 12hr 50 10 50 20 50 20 30 5 5 Rain shwrs C C C S S C C S C Tstms C S C S S S C S C $$ NCZ060-190800- Tusquitee RAWS-Forestry-Cherokee NC 35.07N 84.12W Elev. 1600 ft 217 PM EDT Mon Aug 18 2025 Date 08/18/25 Tue 08/19/25 Wed 08/20/25 Thu 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 88 66 88 66 Temp 85 77 72 70 69 69 80 84 82 75 71 69 67 67 78 85 84 76 71 69 67 67 Dewpt 68 70 70 69 67 67 71 71 70 71 70 69 67 67 71 72 71 71 69 68 67 67 RH 57 79 93 97 93 93 74 65 67 87 97100100100 79 65 65 85 93 97100100 Max/Min RH 97 63 100 63 100 Wind Dir N E E E E E SE N S SE E N N N N NW NW N N N N N Wind Dir Deg 1 8 10 11 11 11 14 0 17 12 11 0 0 0 0 30 31 34 0 0 0 0 Wind Spd 3 2 1 1 1 1 1 2 2 2 1 0 0 0 1 2 2 2 0 0 0 0 Clouds SC SC SC SC SC SC SC SC SC B1 SC SC SC B1 SC FW SC SC SC SC SC B1 Clouds (%) 28 33 26 44 43 45 27 34 41 57 41 44 49 53 27 25 32 31 27 37 46 61 Vsby 10 10 10 7 8 7 10 10 10 10 10 7 PoP 12hr 10 50 10 50 20 QPF 12hr 0 0.17 0 0.22 0.01 Rain shwrs C C C C C S S Tstms C C C C C S Heat index 88 83 89 86 91 89 Max heat 93 89 88 91 92 ChanceThunder 10 50 10 50 20 Max Mix Hgt AGL Mix Hgt 4100 4400 Max Vent Rt 18900 15600 T Wind Dir SE N T Wind Spd 4 3 ADI 16 16 Max LVORI 7 10 Stability A G G A B G F A A G F Ceiling NONE NONE 20800 NONE NONE NONE 20800 20800 NONE NONE NONE Sta Pres 27.93 27.94 27.98 27.96 27.91 27.91 27.92 27.87 27.81 27.82 27.83 Date 08/21 Fri 08/22/25 Sat 08/23/25 Sun 08/24/25 Mon 08/25/25 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 88 66 83 66 82 65 83 61 83 Temp 85 75 68 67 81 73 68 67 79 73 66 66 81 73 64 62 80 71 Dewpt 70 70 68 66 71 69 67 66 70 69 66 66 69 67 64 61 62 61 PWind Dir NW E SE SE S SE NW N NW Wind Char LT LT LT LT LT LT LT LT LT Avg Clouds SC SC B1 B1 B1 B1 B1 B2 B2 B1 B1 B1 B1 SC SC SC SC FW PoP 12hr 60 20 60 40 60 30 40 10 10 Rain shwrs L S C L C S C L C S C Tstms L S C C C S 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 $$