Point Forecast Matrices
Issued by NWS Knoxville/Tri Cities, TN
Issued by NWS Knoxville/Tri Cities, TN
342 FOUS54 KMRX 171714 PFMMRX Point Forecast Matrices National Weather Service Morristown TN 114 PM EDT Thu Jul 17 2025 TNZ017-180800- Tri Cities Airport-Sullivan TN 36.50N 82.41W Elev. 1536 ft 114 PM EDT Thu Jul 17 2025 Date 07/17/25 Fri 07/18/25 Sat 07/19/25 Sun 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 70 87 70 84 70 Temp 85 81 74 72 71 72 80 83 83 80 74 72 71 71 78 80 81 78 74 72 71 71 Dewpt 70 71 71 70 69 70 72 71 71 72 71 70 69 70 71 70 71 70 71 70 70 71 RH 61 72 90 93 93 93 77 67 67 77 90 93 93 97 79 72 72 76 90 93 97100 Wind Dir W W SE SE NW SW W W W SW SW S S SW SW SW SW SW SW SW SW SW Wind Spd 5 2 2 1 1 1 3 5 4 2 2 1 1 2 5 8 8 4 3 3 3 4 Clouds SC SC B1 SC B1 B1 SC B1 B1 B1 B2 B2 B2 B1 B2 B2 B2 B1 B1 B1 B2 B2 PoP 12hr 40 80 40 80 50 QPF 12hr 0.04 0.41 0.04 0.40 0.06 Rain shwrs L C S S S C L L C C S C C C D D C C C C C Tstms L C S S S S L L C S S S S C L L C C S S C Heat index 90 85 84 88 88 83 83 84 Max heat 92 90 90 85 85 Flood A A A Date 07/20 Mon 07/21/25 Tue 07/22/25 Wed 07/23/25 Thu 07/24/25 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 70 88 69 88 69 90 70 91 Temp 82 80 72 71 83 80 71 71 84 82 72 72 86 84 73 72 88 84 Dewpt 73 71 71 71 70 72 70 69 71 72 70 69 70 71 69 70 71 70 PWind Dir W SW W SE S SE SW SE SW Wind Char LT LT LT LT LT LT LT LT LT Avg Clouds B2 B1 B1 B2 B1 B1 SC B1 SC SC SC SC SC SC SC SC SC FW PoP 12hr 70 40 70 30 50 30 40 20 30 Rain shwrs C L C C L C S S C C S S C S C Tstms C L C C L C S C C S C S C $$ TNZ071-180800- Knoxville McGhee Tyson Airport-Blount TN 35.80N 83.98W Elev. 979 ft 114 PM EDT Thu Jul 17 2025 Date 07/17/25 Fri 07/18/25 Sat 07/19/25 Sun EDT 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 74 91 74 89 74 Temp 92 86 80 77 75 77 85 89 89 84 79 77 75 76 82 87 87 83 78 76 75 76 Dewpt 70 70 71 71 71 71 73 71 71 72 73 72 71 73 72 72 72 70 73 73 71 73 RH 49 59 74 82 87 82 67 56 56 67 82 85 87 90 72 61 61 65 85 90 87 90 Wind Dir SW SW S S SW SW SW SW SW SW S S SW SW SW SW SW SW SW SW SW SW Wind Spd 5 4 2 2 2 2 4 6 6 4 3 3 2 4 6 9 9 5 4 4 3 4 Clouds SC SC SC SC SC SC SC B1 SC B1 B2 B1 B1 B1 B1 B2 B1 B1 B1 B1 B1 B1 PoP 12hr 30 60 30 70 30 QPF 12hr 0.04 0.28 0.03 0.30 0.08 Rain shwrs C S S S S C L C C S S C C L L C C S Tstms C S S S S C L C S S S C L L C S S Heat index 98 91 83 92 95 95 90 87 94 94 87 Max heat 98 89 95 96 87 94 96 85 Date 07/20 Mon 07/21/25 Tue 07/22/25 Wed 07/23/25 Thu 07/24/25 EDT 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 91 74 92 74 94 74 95 74 96 Temp 88 84 76 76 89 84 76 76 92 86 77 76 91 87 77 76 93 88 Dewpt 73 71 73 73 71 74 73 73 72 73 72 71 72 71 72 72 72 70 PWind Dir SW SW W SE NE S W SE NW Wind Char LT LT LT LT LT LT LT LT LT Avg Clouds SC B1 B1 B1 SC B1 B1 SC SC SC SC SC SC SC SC FW FW FW PoP 12hr 60 30 60 20 50 20 40 20 30 Rain shwrs S L C S L S C S C S C Tstms S L C S L S C S C S C $$ TNZ036-180800- Oak Ridge-Anderson TN 36.00N 84.24W Elev. 913 ft 114 PM EDT Thu Jul 17 2025 Date 07/17/25 Fri 07/18/25 Sat 07/19/25 Sun 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 90 72 88 72 Temp 91 85 78 76 74 75 84 88 88 83 78 75 74 74 82 85 85 81 77 75 73 75 Dewpt 71 71 72 72 71 72 74 73 73 71 73 73 72 72 73 73 73 71 73 73 71 73 RH 52 63 82 87 90 90 72 61 61 67 85 94 93 93 74 67 67 72 87 94 93 94 Wind Dir SW SW SW SW SW SW SW SW SW W SW SW SW SW SW SW SW SW SW SW SW SW Wind Spd 3 2 2 2 2 2 3 4 3 2 2 2 2 2 4 6 5 3 2 2 2 2 Clouds SC SC SC SC SC B1 SC B1 B1 B1 B2 B1 B1 B1 B1 B2 B2 B1 B1 SC B1 B1 PoP 12hr 30 60 40 80 30 QPF 12hr 0.06 0.21 0.03 0.39 0.03 Rain shwrs C S C S C C L C C S S C C D D C C S Tstms C S C S S C L C C S S C L L C S S Heat index 98 90 91 96 96 88 87 92 92 85 Max heat 98 87 96 97 85 92 93 84 Date 07/20 Mon 07/21/25 Tue 07/22/25 Wed 07/23/25 Thu 07/24/25 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 73 91 72 93 73 94 74 96 Temp 88 82 75 75 89 82 75 75 91 85 76 75 91 86 76 76 93 87 Dewpt 74 72 74 73 72 74 72 72 73 74 73 72 72 72 73 72 73 71 PWind Dir SW SW W N NE NW SW W W Wind Char LT LT LT LT LT LT LT LT LT Avg Clouds B1 B1 B2 B1 B1 B1 B1 SC SC SC SC SC SC SC SC SC FW FW PoP 12hr 60 30 60 20 50 20 40 20 30 Rain shwrs S L C S L S C S C S C Tstms S L C S L S C S C S C $$ TNZ099-180800- Chattanooga Airport-Hamilton TN 35.03N 85.22W Elev. 688 ft 114 PM EDT Thu Jul 17 2025 Date 07/17/25 Fri 07/18/25 Sat 07/19/25 Sun EDT 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 74 93 75 93 74 Temp 92 87 80 77 75 76 85 91 90 85 79 77 75 76 85 89 89 85 79 76 75 76 Dewpt 70 71 73 73 73 73 73 71 72 73 74 73 73 74 73 72 73 72 74 74 74 74 RH 49 59 79 87 94 90 67 52 56 67 85 87 94 94 67 57 59 65 85 94 97 94 Wind Dir S S S S S S S SW S SW SW S S S SW SW SW SW SW SW SW SW Wind Spd 5 3 2 2 2 2 3 5 6 4 2 2 2 2 5 6 8 5 2 2 2 2 Clouds SC SC SC SC FW FW SC SC B1 B1 B1 SC B1 B1 SC B1 B1 B1 SC SC SC SC PoP 12hr 20 50 20 60 20 QPF 12hr 0.01 0.07 0.01 0.09 0.02 Rain shwrs C S C C S S S S L L S S S Tstms C S C C S S S S L C S S S Heat index 98 93 84 92 98 97 92 92 96 97 91 Max heat 99 90 98 99 90 96 99 89 Date 07/20 Mon 07/21/25 Tue 07/22/25 Wed 07/23/25 Thu 07/24/25 EDT 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 93 75 93 75 96 75 96 75 97 Temp 90 84 76 77 90 85 77 76 92 87 77 77 93 87 78 77 94 88 Dewpt 73 72 75 75 72 75 75 74 73 75 74 74 72 73 74 74 72 72 PWind Dir W W W NW N SW SE SE NW Wind Char LT LT LT LT LT LT LT LT LT Avg Clouds SC SC B1 SC SC B1 B1 SC SC SC SC SC FW SC SC FW FW FW PoP 12hr 60 20 60 10 50 20 40 10 30 Rain shwrs S L S S L C S C C Tstms S L S S L C S C C $$ NCZ060-180800- Tusquitee RAWS-Forestry-Cherokee NC 35.07N 84.12W Elev. 1600 ft 114 PM EDT Thu Jul 17 2025 Date 07/17/25 Fri 07/18/25 Sat 07/19/25 Sun 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 91 68 88 69 Temp 86 80 73 71 69 70 81 86 86 79 73 71 69 70 79 83 85 78 72 71 70 70 Dewpt 68 70 70 69 68 68 72 69 69 71 70 69 68 69 71 69 71 70 70 70 69 69 RH 55 72 90 93 97 93 74 57 57 77 90 93 97 97 77 63 63 76 93 97 97 97 Max/Min RH 97 53 100 61 100 Wind Dir S S S N N N SW SW SW SW SE N N S W SW SW W SW SW SW W Wind Dir Deg 19 16 17 0 0 0 21 20 21 20 15 0 0 19 24 23 23 24 20 22 23 25 Wind Spd 3 2 1 0 0 0 2 3 4 2 1 0 0 1 2 5 4 2 1 1 1 1 Clouds B1 SC SC SC SC B1 SC SC SC SC B1 SC B1 B1 SC B1 B1 B1 SC SC B1 B1 Clouds (%) 56 41 47 37 40 52 32 40 48 47 52 40 63 65 50 60 67 57 44 35 60 61 Vsby 10 10 10 10 10 10 10 10 10 10 10 10 PoP 12hr 30 60 30 70 30 QPF 12hr 0.05 0.11 0.03 0.19 0.05 Rain shwrs C S C S C L C C S C C L L C C S Tstms C S S S C L C S S C L L C S S Heat index 89 83 85 90 90 87 90 Max heat 92 90 91 87 90 ChanceThunder 50 60 40 70 30 Max Mix Hgt AGL Mix Hgt 4300 2700 Max Vent Rt 42500 13000 T Wind Dir SW SW T Wind Spd 8 4 ADI 43 13 Max LVORI 8 8 Stability A G G B B G F B B G F Ceiling NONE NONE NONE NONE NONE NONE NONE NONE NONE NONE NONE Sta Pres 27.98 28.02 28.05 28.03 28.01 28.04 28.05 28.04 27.99 27.98 27.98 Date 07/20 Mon 07/21/25 Tue 07/22/25 Wed 07/23/25 Thu 07/24/25 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 68 91 68 91 68 92 68 93 Temp 86 79 71 70 87 79 71 70 88 80 71 70 88 81 71 70 89 81 Dewpt 71 69 70 70 69 71 70 69 70 72 69 68 70 69 69 68 70 69 PWind Dir W NW NW NE N E NE E N Wind Char LT LT LT LT LT LT LT LT LT Avg Clouds SC B1 B1 B1 SC B1 SC SC SC SC SC B1 SC SC SC SC FW FW PoP 12hr 70 20 70 30 60 30 50 20 40 Rain shwrs S L S S L C S L C S C S C Tstms S L S S L C S C S 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 $$