Point Forecast Matrices
Issued by NWS Knoxville/Tri Cities, TN
Issued by NWS Knoxville/Tri Cities, TN
834 FOUS54 KMRX 180604 PFMMRX Point Forecast Matrices National Weather Service Morristown TN 203 AM EDT Mon Aug 18 2025 TNZ017-182000- Tri Cities Airport-Sullivan TN 36.50N 82.41W Elev. 1536 ft 203 AM EDT Mon Aug 18 2025 Date Mon 08/18/25 Tue 08/19/25 Wed 08/20/25 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 89 68 89 68 89 Temp 69 69 79 85 87 81 74 71 69 70 80 86 87 81 74 71 69 69 79 85 86 79 Dewpt 67 68 71 69 67 68 68 67 67 67 70 70 69 69 69 69 67 67 70 70 70 69 RH 93 97 77 59 52 65 82 87 93 90 72 59 55 67 84 93 93 93 74 61 59 72 Wind Dir NE NE N N N N E E E E E N E SE SE SE E E SW NW N S Wind Spd 1 1 2 4 5 3 2 2 2 2 2 2 2 3 2 2 1 1 2 3 4 3 Clouds SC SC FW FW FW FW FW FW FW FW FW FW FW FW SC FW FW FW FW FW SC SC PoP 12hr 10 10 30 10 40 QPF 12hr 0 0 0.02 0 0.05 Rain shwrs C C C C S Tstms S C C C S Obvis PF Heat index 89 91 84 83 90 91 84 90 91 Max heat 90 92 92 94 83 91 93 Date Thu 08/21/25 Fri 08/22/25 Sat 08/23/25 Sun 08/24/25 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 68 86 66 86 67 83 66 82 Temp 70 69 82 77 68 68 82 77 69 68 79 76 68 67 78 74 Dewpt 68 67 70 69 67 66 69 69 67 67 70 69 66 66 68 65 PWind Dir E N NE S SE S S W Wind Char LT LT LT LT LT LT LT LT Avg Clouds SC SC B1 B1 SC SC B1 B1 SC B1 B1 SC SC B1 B1 SC PoP 12hr 20 40 10 30 20 50 30 40 Rain shwrs S S C S C S S C C C S C C Tstms S S C S C S C S C $$ TNZ071-182000- Knoxville McGhee Tyson Airport-Blount TN 35.80N 83.98W Elev. 979 ft 203 AM EDT Mon Aug 18 2025 Date Mon 08/18/25 Tue 08/19/25 Wed 08/20/25 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 93 72 92 72 92 Temp 72 72 83 90 91 85 79 75 73 73 84 90 91 85 78 75 73 73 82 89 90 82 Dewpt 70 70 73 70 69 68 71 70 69 70 72 72 70 71 71 71 70 71 72 73 71 71 RH 93 93 72 52 49 57 77 84 87 90 67 56 50 63 79 87 90 93 72 59 54 69 Wind Dir NE NE NE N N NE NE NE N E W NW NW SE S SW S S W NW N NE Wind Spd 2 2 4 5 5 4 3 2 2 1 2 2 3 3 2 2 2 2 2 3 5 3 Clouds FW SC FW FW FW SC SC FW FW FW FW FW FW FW SC FW SC SC FW SC FW SC PoP 12hr 5 5 20 10 30 QPF 12hr 0 0 0 0 0 Rain shwrs S S C C Tstms S S C C Heat index 89 96 96 88 90 97 97 90 87 97 96 86 Max heat 97 98 87 97 98 88 97 99 Date Thu 08/21/25 Fri 08/22/25 Sat 08/23/25 Sun 08/24/25 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 71 90 71 88 70 86 69 86 Temp 74 72 86 81 74 71 86 80 73 71 84 78 72 70 82 77 Dewpt 71 70 73 71 70 69 72 71 70 69 72 71 69 69 70 67 PWind Dir NE N NE NW S SW SW W Wind Char LT LT LT LT LT LT LT LT Avg Clouds SC SC SC SC SC SC B1 SC B1 B1 B1 SC SC SC SC SC PoP 12hr 10 30 10 30 30 40 20 30 Rain shwrs C S C C S C C S S S C Tstms C S C C S C S C $$ TNZ036-182000- Oak Ridge-Anderson TN 36.00N 84.24W Elev. 913 ft 203 AM EDT Mon Aug 18 2025 Date Mon 08/18/25 Tue 08/19/25 Wed 08/20/25 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 93 71 93 71 92 Temp 72 72 83 91 90 85 77 75 72 72 84 90 91 85 78 74 72 73 82 90 87 81 Dewpt 69 70 73 71 69 69 69 68 67 68 72 72 71 71 71 71 70 71 74 73 73 72 RH 90 93 72 52 50 59 76 79 84 87 67 56 52 63 79 90 93 93 77 58 63 74 Wind Dir NE NE NE NE NE NE NE NE NE NE SE W NW NE W W SW SW SW W NW N Wind Spd 2 2 2 3 3 2 2 2 2 1 1 1 2 2 1 1 1 1 2 2 2 2 Clouds FW SC FW FW SC FW FW FW FW SC FW FW FW FW FW FW SC SC SC SC SC SC PoP 12hr 5 0 20 5 30 QPF 12hr 0 0 0 0 0 Rain shwrs S S C C Tstms S S C C Heat index 89 98 95 89 90 97 98 90 88 98 94 85 Max heat 98 97 85 97 99 88 98 98 Date Thu 08/21/25 Fri 08/22/25 Sat 08/23/25 Sun 08/24/25 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 71 89 69 88 69 86 68 86 Temp 74 72 87 80 73 71 86 80 72 71 84 78 71 69 83 76 Dewpt 71 70 73 71 69 69 73 71 70 69 73 71 69 68 69 66 PWind Dir N N NE S SW SW SW W Wind Char LT LT LT LT LT LT LT LT Avg Clouds SC SC SC B1 SC B1 B1 B1 SC B1 B1 SC SC B1 SC SC PoP 12hr 10 30 5 30 20 40 20 30 Rain shwrs C S C S S C C S S S C Tstms C S C S S C S C $$ TNZ099-182000- Chattanooga Airport-Hamilton TN 35.03N 85.22W Elev. 688 ft 203 AM EDT Mon Aug 18 2025 Date Mon 08/18/25 Tue 08/19/25 Wed 08/20/25 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 95 73 93 72 93 Temp 74 74 85 92 93 86 80 77 74 74 84 90 90 84 78 76 74 73 84 90 89 84 Dewpt 71 71 73 72 70 71 72 72 71 72 74 73 72 73 73 72 72 72 73 73 72 72 RH 90 90 67 52 47 61 77 85 90 93 72 58 56 70 85 87 93 97 70 58 57 67 Wind Dir N N NE N N N NE NE N E SE E E SE S S S S S NW N N Wind Spd 2 2 3 4 5 3 2 2 1 1 2 2 2 2 2 1 1 1 2 2 4 2 Clouds FW FW CL FW FW FW FW SC FW FW FW FW FW FW FW FW FW FW FW FW SC SC PoP 12hr 5 5 30 5 40 QPF 12hr 0 0 0 0 0.01 Rain shwrs C C C C Tstms C C C C Heat index 92100 99 91 84 91 98 97 90 90 98 96 90 Max heat 100 99 89 98 100 87 98 98 Date Thu 08/21/25 Fri 08/22/25 Sat 08/23/25 Sun 08/24/25 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 73 91 71 87 71 86 70 87 Temp 76 74 88 81 74 72 84 79 73 72 83 78 72 71 84 78 Dewpt 72 71 73 72 71 70 73 72 71 71 73 72 71 70 71 69 PWind Dir N N NE SE SE S SW N Wind Char LT LT LT LT LT LT LT LT Avg Clouds SC SC SC SC SC SC B1 B1 B1 B1 B1 B1 SC SC SC SC PoP 12hr 10 40 10 40 20 50 20 30 Rain shwrs C S C S S C C S S C Tstms C S C S S C S C $$ NCZ060-182000- Tusquitee RAWS-Forestry-Cherokee NC 35.07N 84.12W Elev. 1600 ft 203 AM EDT Mon Aug 18 2025 Date Mon 08/18/25 Tue 08/19/25 Wed 08/20/25 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 91 67 88 67 88 Temp 67 67 82 89 86 78 72 70 69 68 80 85 82 76 71 69 67 68 79 85 84 76 Dewpt 66 66 71 69 69 70 70 69 68 68 72 71 71 71 70 69 67 68 72 72 71 71 RH 97 97 69 52 57 76 93 97 97100 77 63 69 85 97100100100 79 65 65 85 Min/Max RH 50 100 63 100 63 Wind Dir N N E NW N NE SE E E E SE S S SE E N N N NW NW NW N Wind Dir Deg 0 0 8 31 1 5 13 11 10 11 13 18 17 13 11 0 0 0 31 30 31 34 Wind Spd 0 0 1 2 3 2 1 1 1 1 1 2 2 2 1 0 0 0 1 2 2 2 Clouds FW SC FW SC SC SC SC SC SC SC FW SC SC B1 SC SC B1 B1 SC FW SC SC Clouds (%) 24 36 8 27 28 32 26 35 34 48 24 42 41 51 41 44 51 56 26 25 32 31 Vsby 7 9 10 10 10 10 10 7 7 7 10 10 PoP 12hr 30 10 60 10 50 QPF 12hr 0 0 0.17 0 0.22 Rain shwrs S C S S L L C C Tstms S C S C C C C Obvis F Heat index 86 94 90 84 90 86 91 89 Max heat 94 93 90 90 91 92 ChanceThunder 30 10 50 10 50 Max Mix Hgt AGL Mix Hgt 5500 3300 4400 Max Vent Rt 23200 16600 15400 T Wind Dir NE E N T Wind Spd 4 5 3 ADI 23 18 16 Max LVORI 8 10 10 Stability G A A G G A B G F A A Ceiling 15900 NONE NONE NONE 23500 NONE NONE NONE NONE NONE NONE Sta Pres 27.93 27.92 27.92 27.94 27.97 27.95 27.90 27.90 27.90 27.87 27.81 Date Thu 08/21/25 Fri 08/22/25 Sat 08/23/25 Sun 08/24/25 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 66 88 66 84 66 83 64 83 Temp 69 67 85 75 68 67 81 74 68 67 79 73 67 66 80 73 Dewpt 68 67 70 70 68 66 71 69 68 67 71 69 67 66 69 67 PWind Dir N NW E SE SE SE SE NW Wind Char LT LT LT LT LT LT LT LT Avg Clouds SC SC SC SC B1 B1 B1 B1 B1 B2 B1 B1 B1 B1 B1 SC PoP 12hr 10 50 20 60 40 60 30 40 Rain shwrs C S C L C S C L C S S C Tstms C S C C 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 $$