Point Forecast Matrices
Issued by NWS Knoxville/Tri Cities, TN
Issued by NWS Knoxville/Tri Cities, TN
857 FOUS54 KMRX 120712 PFMMRX Point Forecast Matrices National Weather Service Morristown TN 311 AM EDT Mon May 12 2025 TNZ017-122000- Tri Cities Airport-Sullivan TN 36.50N 82.41W Elev. 1536 ft 311 AM EDT Mon May 12 2025 Date Mon 05/12/25 Tue 05/13/25 Wed 05/14/25 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 72 60 76 57 76 Temp 62 61 66 68 71 69 64 62 61 61 70 75 74 69 62 59 57 59 67 73 75 71 Dewpt 58 59 62 62 61 61 60 59 60 61 63 61 61 60 58 57 57 59 61 61 61 60 RH 87 93 87 81 71 76 87 90 97100 78 62 64 73 87 93100100 81 66 62 68 Wind Dir E E E SE SE E SE E E E S S SW SW S SE SE S SW SW SW SW Wind Spd 6 6 9 9 10 6 5 3 3 2 4 6 5 2 2 1 1 1 2 5 5 2 Wind Gust 18 19 20 Clouds OV OV OV OV B2 B2 B2 B2 B2 B2 B1 SC B1 B1 B1 B2 B2 B2 B1 SC SC SC PoP 12hr 80 80 90 50 80 QPF 12hr 0.33 0.24 0.34 0.10 0.14 Rain shwrs L L D L L D L L L D D D D C C C C L L D D S Tstms S S C C C S S C L L C C C C Obvis PF PF Date Thu 05/15/25 Fri 05/16/25 Sat 05/17/25 Sun 05/18/25 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 59 83 65 83 64 79 59 80 Temp 61 61 80 79 68 67 80 77 67 64 76 74 61 61 77 75 Dewpt 58 61 66 66 64 65 67 65 63 63 63 60 58 59 59 59 PWind Dir S SW SW SW SW W SW W Wind Char LT LT LT GN LT GN LT LT Avg Clouds SC SC B1 SC SC B2 B2 B1 B1 B2 B2 SC SC SC SC SC PoP 12hr 20 20 30 60 60 60 20 20 Rain shwrs S S S C C L C L L C S S S S Tstms S S S C C C S $$ TNZ071-122000- Knoxville McGhee Tyson Airport-Blount TN 35.80N 83.98W Elev. 979 ft 311 AM EDT Mon May 12 2025 Date Mon 05/12/25 Tue 05/13/25 Wed 05/14/25 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 76 60 75 59 79 Temp 64 63 70 71 74 71 65 63 60 61 71 72 74 69 62 61 60 60 70 76 78 75 Dewpt 61 61 64 65 65 63 62 61 60 61 62 63 62 61 60 59 59 60 63 64 63 63 RH 90 93 81 81 74 76 90 93100100 73 73 66 76 93 93 96100 78 66 60 66 Wind Dir NE NE E E SE E E NE NE E SW SW SW SW SW S S SW SW SW SW SW Wind Spd 5 6 4 6 6 5 3 3 2 2 4 5 6 3 2 2 2 2 3 6 6 3 Clouds OV B2 B2 B2 B1 B1 B2 B2 B2 B1 B1 B2 B1 B1 B1 B1 B1 B1 SC SC SC SC PoP 12hr 80 70 90 40 70 QPF 12hr 0.32 0.06 0.70 0.05 0.08 Rain shwrs C S L D C C C C C L D D D C C C C C C L L S Tstms S S C C C C C S S C L L C S C C S Obvis PF PF Date Thu 05/15/25 Fri 05/16/25 Sat 05/17/25 Sun 05/18/25 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 64 85 70 85 67 82 62 83 Temp 66 66 82 81 73 72 82 80 71 67 79 77 65 64 81 77 Dewpt 62 63 69 68 66 67 69 67 66 65 66 62 61 61 62 63 PWind Dir S SW SW SW SW SW SW SW Wind Char LT GN LT GN LT GN LT LT Avg Clouds SC B1 B1 SC B1 B2 B2 B1 B2 B2 B2 SC SC B1 SC B1 PoP 12hr 20 10 30 50 70 60 20 30 Rain shwrs S C C C C L L C S S S C Tstms S S C C C S C S $$ TNZ036-122000- Oak Ridge-Anderson TN 36.00N 84.24W Elev. 913 ft 311 AM EDT Mon May 12 2025 Date Mon 05/12/25 Tue 05/13/25 Wed 05/14/25 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 75 60 76 59 78 Temp 63 63 68 72 75 71 64 62 61 62 70 74 75 69 63 61 59 61 69 76 78 74 Dewpt 61 61 64 65 65 64 63 62 61 61 63 62 61 61 60 59 59 61 63 64 64 64 RH 93 93 87 79 71 79 97100100 97 78 66 62 76 90 93100100 81 66 62 71 Wind Dir NE NE E E SE E E NE E S SW SW SW SW SW SW SW SW SW SW SW S Wind Spd 5 5 5 5 5 2 3 2 1 1 3 5 5 2 2 2 2 2 3 4 4 2 Clouds OV OV OV B2 B2 B2 B2 B2 B2 B2 B1 B1 B1 B1 B1 B2 B2 B2 B1 SC SC SC PoP 12hr 80 60 90 40 70 QPF 12hr 0.40 0.08 0.17 0.03 0.04 Rain shwrs L C L D L C C C C L L D D C C C C C C L L S Tstms S S C C L C C S S C L L C S C C S Date Thu 05/15/25 Fri 05/16/25 Sat 05/17/25 Sun 05/18/25 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 63 85 69 85 67 83 61 82 Temp 65 65 82 81 72 70 82 79 70 67 80 77 64 63 80 77 Dewpt 62 64 69 68 67 67 70 67 66 65 65 62 60 61 63 63 PWind Dir S SW SW SW SW SW W SW Wind Char LT LT LT LT LT LT LT LT Avg Clouds SC B1 B1 B1 B1 B2 B2 B1 B2 B2 B1 B1 SC B1 B1 B1 PoP 12hr 20 10 30 50 70 60 20 30 Rain shwrs S C C C C L L C S S S C Tstms S S C C C C S C S $$ TNZ099-122000- Chattanooga Airport-Hamilton TN 35.03N 85.22W Elev. 688 ft 311 AM EDT Mon May 12 2025 Date Mon 05/12/25 Tue 05/13/25 Wed 05/14/25 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 77 61 75 60 81 Temp 63 64 68 74 75 72 66 63 62 62 68 72 74 70 64 61 60 62 71 78 81 77 Dewpt 63 63 65 65 65 64 63 62 62 62 63 62 62 63 63 61 60 61 66 66 64 66 RH 100 97 90 74 71 76 90 97100100 84 71 66 78 97100100 97 84 67 56 69 Wind Dir E E SE SE SE SE S S SE S S S S S S S S S S S SW S Wind Spd 5 5 8 8 8 5 2 2 3 3 4 6 5 2 1 1 1 1 3 6 6 4 Wind Gust 16 18 Clouds OV OV B2 B2 B1 B2 B2 B2 B2 B2 B2 B1 B1 B1 B1 B1 B1 B2 B1 SC SC FW PoP 12hr 70 70 90 40 40 QPF 12hr 0.40 0.28 0.16 0.03 0.07 Rain shwrs L L C C C L C S S L D D D C C C C C C C C Tstms S S S C C C C C L L C S C C Date Thu 05/15/25 Fri 05/16/25 Sat 05/17/25 Sun 05/18/25 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 64 88 70 87 68 85 64 86 Temp 68 65 84 82 72 71 84 81 71 69 82 79 66 66 84 80 Dewpt 64 64 69 69 68 68 71 69 68 67 67 65 64 63 64 66 PWind Dir S S S SW SW W SW SW Wind Char LT LT LT LT LT LT LT LT Avg Clouds SC SC SC SC B1 B2 B2 B2 B2 B2 B1 SC SC B1 B1 SC PoP 12hr 5 5 20 40 70 60 20 30 Rain shwrs S C C C L L C S S S C Tstms S S C C S C $$ NCZ060-122000- Tusquitee RAWS-Forestry-Cherokee NC 35.07N 84.12W Elev. 1600 ft 311 AM EDT Mon May 12 2025 Date Mon 05/12/25 Tue 05/13/25 Wed 05/14/25 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 73 58 73 56 78 Temp 61 61 65 69 72 69 63 60 58 59 67 72 70 66 60 58 58 57 68 74 77 73 Dewpt 59 60 62 62 61 60 60 59 58 59 61 59 59 58 57 57 57 57 61 61 59 60 RH 93 97 90 78 68 73 90 96100100 81 64 68 75 90 96 96100 78 64 54 64 Min/Max RH 68 100 61 100 54 Wind Dir SE SE SE SE SE SE SE SE E SE S S S S SE SE N S SW W SW S Wind Dir Deg 13 13 13 14 14 13 13 12 11 12 17 18 18 16 15 15 0 18 22 24 23 19 Wind Spd 8 8 8 9 8 5 4 3 3 2 3 5 4 2 1 1 0 1 2 4 4 2 Wind Gust 23 21 20 21 Clouds OV OV B2 B2 B1 B2 B2 B2 B1 B2 B1 B1 B1 B1 B1 B1 B2 B2 SC B1 SC SC Clouds (%) 88 88 86 79 61 72 79 74 64 71 68 66 67 53 59 61 72 73 47 53 44 31 Vsby 10 5 5 6 6 7 6 6 6 6 6 PoP 12hr 90 80 90 40 70 QPF 12hr 0.59 0.31 0.19 0.05 0.05 Rain shwrs C C D L C C L C D D D D C C C C L L L L S Tstms S S C C C C C S C L C C S C C S Obvis PF ChanceThunder 50 50 60 40 50 Max Mix Hgt AGL Mix Hgt 3000 3700 5100 Max Vent Rt 54600 47400 64200 T Wind Dir SE S SW T Wind Spd 17 9 9 ADI 47 41 56 Max LVORI 6 9 9 Stability D B B F F B B F F B A Ceiling NONE NONE NONE NONE 23500 NONE NONE NONE NONE NONE NONE Sta Pres 27.92 27.87 27.77 27.77 27.76 27.73 27.69 27.71 27.73 27.73 27.72 Date Thu 05/15/25 Fri 05/16/25 Sat 05/17/25 Sun 05/18/25 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 60 85 65 85 64 82 59 84 Temp 63 61 81 79 68 67 82 79 68 64 79 76 63 60 81 77 Dewpt 60 61 64 65 63 65 65 64 64 63 62 60 59 59 58 60 PWind Dir S SW S SW SW W W W Wind Char LT LT LT LT LT LT LT LT Avg Clouds SC B1 B1 SC B1 B1 B2 B2 B2 B2 B1 B1 SC B1 SC SC PoP 12hr 20 10 20 50 70 70 20 30 Rain shwrs S S C C C L L C S S S C Tstms S S S C C S C S This is an experimental product for planning and review purposes only, and is not to be substituted for an official fire weather spot forecast $$