Point Forecast Matrices
Issued by NWS Knoxville/Tri Cities, TN
Issued by NWS Knoxville/Tri Cities, TN
911 FOUS54 KMRX 110543 PFMMRX Point Forecast Matrices National Weather Service Morristown TN 143 AM EDT Mon Aug 11 2025 TNZ017-112000- Tri Cities Airport-Sullivan TN 36.50N 82.41W Elev. 1536 ft 143 AM EDT Mon Aug 11 2025 Date Mon 08/11/25 Tue 08/12/25 Wed 08/13/25 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 85 68 86 69 85 Temp 67 68 77 81 81 78 72 69 69 70 78 81 83 78 73 71 70 70 76 81 82 78 Dewpt 64 65 69 71 71 70 69 68 67 68 71 72 72 71 71 70 69 70 72 73 74 72 RH 90 90 76 72 72 76 90 97 93 93 79 74 70 79 93 97 97100 87 77 77 82 Wind Dir NE E SE SE SE SE SE SE NE E SW S SW SW SW SW S SW W W SW SW Wind Spd 2 2 3 4 5 4 3 2 1 1 2 3 4 3 2 2 2 2 4 5 4 3 Clouds FW SC SC B1 B1 SC FW SC SC B1 B1 B1 B1 B1 B1 B1 B2 OV B2 B1 B1 B1 PoP 12hr 50 20 60 40 70 QPF 12hr 0.33 0 0.12 0.13 0.18 Rain shwrs C C S C C L L C C C C C C L L C Tstms C C S C C L C S S C L C Heat index 85 85 85 88 86 87 Max heat 87 88 87 89 87 89 Date Thu 08/14/25 Fri 08/15/25 Sat 08/16/25 Sun 08/17/25 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 86 68 88 68 88 66 88 Temp 71 70 82 78 70 70 84 80 70 69 85 79 69 68 84 80 Dewpt 69 69 73 71 69 68 72 71 69 68 71 70 67 66 69 68 PWind Dir SW W NE N E E E E Wind Char LT LT LT LT LT LT LT LT Avg Clouds B1 B2 B2 B1 SC B1 SC SC SC SC SC SC SC SC SC SC PoP 12hr 40 60 20 40 10 30 10 30 Rain shwrs C S S L S C C C Tstms C S C S C C C $$ TNZ071-112000- Knoxville McGhee Tyson Airport-Blount TN 35.80N 83.98W Elev. 979 ft 143 AM EDT Mon Aug 11 2025 Date Mon 08/11/25 Tue 08/12/25 Wed 08/13/25 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 89 71 87 72 88 Temp 71 72 80 86 86 82 77 74 72 73 80 84 83 80 76 74 73 73 80 85 85 81 Dewpt 67 67 70 72 72 72 71 71 70 71 72 74 74 73 73 72 72 72 74 75 75 73 RH 87 84 72 63 63 72 82 90 93 93 77 72 74 79 90 93 97 97 82 72 72 77 Wind Dir N NE NE NE E SE SW W N E E S S S SW SW SW SW SW W SW SW Wind Spd 2 2 2 3 5 4 2 2 2 2 2 3 5 4 3 2 2 3 4 4 5 4 Clouds SC B1 SC B1 SC B2 SC SC B1 B2 B1 B1 B1 B1 B1 B2 B2 B2 B2 B1 B1 B2 PoP 12hr 30 20 60 50 60 QPF 12hr 0 0 0.25 0.06 0.14 Rain shwrs C C S C C L L C C C C C C L L C Tstms C C S C L C C S S C L C C Heat index 83 92 92 87 84 91 90 84 85 94 94 86 Max heat 92 94 84 91 91 94 95 Date Thu 08/14/25 Fri 08/15/25 Sat 08/16/25 Sun 08/17/25 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 72 89 72 90 72 90 72 90 Temp 75 73 86 82 75 73 88 82 74 73 87 82 74 73 87 82 Dewpt 72 72 75 73 71 71 73 72 72 72 74 73 71 71 72 70 PWind Dir SW W SE NE E N SE N Wind Char LT LT LT LT LT LT LT LT Avg Clouds B2 B2 B2 B1 B1 B1 SC SC SC SC SC SC SC SC SC SC PoP 12hr 30 50 10 30 10 30 10 20 Rain shwrs C S C C C S Tstms C S C C C S $$ TNZ036-112000- Oak Ridge-Anderson TN 36.00N 84.24W Elev. 913 ft 143 AM EDT Mon Aug 11 2025 Date Mon 08/11/25 Tue 08/12/25 Wed 08/13/25 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 90 71 87 72 88 Temp 71 71 82 87 87 81 76 74 72 73 80 84 83 79 75 73 73 73 80 85 85 81 Dewpt 67 67 71 72 72 72 72 71 70 71 73 74 75 72 72 72 72 72 74 75 75 73 RH 87 87 69 61 61 74 87 90 93 93 79 72 77 79 90 97 97 97 82 72 72 77 Wind Dir NE NE E E E SE S W W N S S SW S SW SW SW SW SW SW W SW Wind Spd 1 2 2 2 3 2 2 2 1 1 2 3 3 3 2 2 2 2 2 3 3 2 Clouds SC B1 SC SC SC SC SC SC B1 B2 B2 B2 B1 B1 B1 B2 B2 B2 B2 B2 B1 B1 PoP 12hr 30 10 60 40 70 QPF 12hr 0 0 0.21 0.05 0.13 Rain shwrs S S C C L L C C C C C C L L C Tstms S S C C C C S S S C L C C Heat index 86 94 94 85 84 91 90 85 94 94 86 Max heat 94 94 91 92 94 95 Date Thu 08/14/25 Fri 08/15/25 Sat 08/16/25 Sun 08/17/25 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 71 91 71 90 71 90 Temp 74 73 87 81 73 72 89 82 74 73 87 82 73 72 88 82 Dewpt 72 72 74 73 71 71 73 72 72 71 74 73 71 71 73 70 PWind Dir SW W N NE N SE NE E Wind Char LT LT LT LT LT LT LT LT Avg Clouds B1 B2 B2 B1 SC SC SC SC SC SC SC SC SC SC B1 SC PoP 12hr 30 50 10 30 10 30 5 30 Rain shwrs C S S C C C C Tstms C S S C C C C $$ TNZ099-112000- Chattanooga Airport-Hamilton TN 35.03N 85.22W Elev. 688 ft 143 AM EDT Mon Aug 11 2025 Date Mon 08/11/25 Tue 08/12/25 Wed 08/13/25 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 88 73 87 72 89 Temp 72 73 80 85 86 81 76 74 73 73 79 82 85 80 76 74 73 73 80 85 85 81 Dewpt 69 70 72 73 74 73 73 72 72 73 74 75 75 74 73 73 73 73 75 75 76 75 RH 90 90 77 67 68 77 90 93 97100 85 79 72 82 90 97100100 85 72 75 82 Wind Dir N NE E E SE SE SE S SE SE S S S S S S S S SW SW SW SW Wind Spd 1 2 4 5 5 5 3 2 2 2 3 5 5 4 2 2 2 2 2 3 3 2 Clouds SC B1 B1 B1 SC B1 B1 B1 B1 B2 B2 B1 B1 B1 B1 B2 B2 B2 B1 B1 B1 B1 PoP 12hr 40 20 80 40 80 QPF 12hr 0.21 0.03 0.18 0.06 0.34 Rain shwrs C C S C C D D C C C C C C D D S Tstms C C S C L C C S C S C L L S Heat index 84 92 94 86 89 94 85 85 94 94 87 Max heat 92 94 89 94 94 96 Date Thu 08/14/25 Fri 08/15/25 Sat 08/16/25 Sun 08/17/25 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 73 90 72 93 73 91 73 90 Temp 75 74 87 81 75 73 90 83 75 74 88 83 75 74 87 82 Dewpt 74 73 75 74 74 73 75 74 73 72 74 74 73 72 73 73 PWind Dir SW W NW NW N SE E SE Wind Char LT LT LT LT LT LT LT LT Avg Clouds B1 B1 B1 B1 B1 SC SC SC SC SC SC SC SC SC SC SC PoP 12hr 20 60 10 40 10 30 5 30 Rain shwrs S S L C C C Tstms S S C C C C $$ NCZ060-112000- Tusquitee RAWS-Forestry-Cherokee NC 35.07N 84.12W Elev. 1600 ft 143 AM EDT Mon Aug 11 2025 Date Mon 08/11/25 Tue 08/12/25 Wed 08/13/25 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 85 68 83 68 85 Temp 68 67 76 81 81 75 71 69 70 69 75 80 79 75 71 70 69 69 76 81 80 76 Dewpt 66 67 71 72 71 70 69 69 69 69 72 73 72 71 71 70 69 69 73 73 73 72 RH 93100 85 74 72 84 93100 97100 90 79 79 87100100100100 90 77 79 87 Min/Max RH 72 100 77 100 77 Wind Dir E E E SE SE SE E E E E SE S S S SE SE SE S SW W W SW Wind Dir Deg 10 10 11 14 12 13 11 11 10 10 14 16 17 16 15 15 15 18 23 24 25 22 Wind Spd 2 2 3 5 5 4 3 2 2 2 2 4 3 2 1 1 1 1 2 3 3 2 Clouds B1 B2 B1 B1 B1 B1 B1 B2 OV OV B2 B2 B1 B2 B2 B2 OV OV B2 B1 B1 B1 Clouds (%) 59 76 66 61 58 68 60 79 88 88 78 73 65 74 83 86 97 96 78 67 61 66 Vsby 7 7 10 10 10 10 10 7 7 7 8 6 PoP 12hr 60 40 80 60 80 QPF 12hr 0.02 0.19 0.25 0.10 0.40 Rain shwrs S C C C C S S L L D D L L C C C C D D C Tstms S C C C S S C L C C S S S C L C S Heat index 85 85 84 86 84 Max heat 85 87 84 84 86 86 ChanceThunder 50 30 70 30 60 Max Mix Hgt AGL Mix Hgt 3300 3400 3500 Max Vent Rt 26300 26900 24300 T Wind Dir E S W T Wind Spd 8 6 5 ADI 26 27 24 Max LVORI 10 10 10 Stability F B B F D B B D D B B Ceiling NONE NONE NONE NONE NONE NONE NONE NONE NONE NONE NONE Sta Pres 28.03 28.03 28.00 28.02 28.03 28.00 27.98 27.97 27.97 27.94 27.92 Date Thu 08/14/25 Fri 08/15/25 Sat 08/16/25 Sun 08/17/25 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 88 67 89 67 87 66 87 Temp 70 69 84 77 69 68 86 77 69 69 84 77 69 67 83 76 Dewpt 70 69 73 71 69 68 72 72 69 69 71 71 68 67 70 70 PWind Dir SW NW NW NW NW S E N Wind Char LT LT LT LT LT LT LT LT Avg Clouds B2 B2 B1 B1 B1 B1 SC SC B1 B1 B1 SC B1 B1 SC SC PoP 12hr 30 70 20 50 20 40 10 40 Rain shwrs C S L S C S C C Tstms S S C S C S C 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 $$