Point Forecast Matrices
Issued by NWS Knoxville/Tri Cities, TN
Issued by NWS Knoxville/Tri Cities, TN
406 FOUS54 KMRX 221741 PFMMRX Point Forecast Matrices National Weather Service Morristown TN 140 PM EDT Fri Aug 22 2025 TNZ017-230800- Tri Cities Airport-Sullivan TN 36.50N 82.41W Elev. 1536 ft 140 PM EDT Fri Aug 22 2025 Date 08/22/25 Sat 08/23/25 Sun 08/24/25 Mon 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 66 84 66 80 61 Temp 84 77 71 68 67 67 77 82 80 75 70 68 66 67 72 77 79 74 67 65 63 61 Dewpt 68 69 67 65 65 65 68 69 69 69 67 66 66 66 69 70 69 68 65 64 62 60 RH 59 76 87 90 93 93 74 65 69 82 90 93100 97 90 79 72 82 93 97 97 97 Wind Dir E SE SE E E E S S S SE SE SE S S SW W W SW SW W NW N Wind Spd 4 4 2 2 2 2 2 3 4 2 2 1 1 2 2 4 4 2 2 2 2 2 Clouds SC SC SC FW SC B1 SC B1 B1 B1 SC B1 B2 B2 B2 B1 B1 SC FW SC SC SC PoP 12hr 10 70 60 70 20 QPF 12hr 0 0.14 0.16 0.28 0.02 Rain shwrs S L L L L L L L L L L S S Tstms S C C C S S C S C C C S Heat index 88 86 Max heat 90 88 87 83 Date 08/25 Tue 08/26/25 Wed 08/27/25 Thu 08/28/25 Fri 08/29/25 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 77 53 75 50 75 50 77 54 78 Temp 74 71 58 54 72 69 54 52 72 68 53 52 74 70 56 56 75 72 Dewpt 57 53 52 51 52 51 48 48 49 50 47 47 51 52 51 51 55 56 PWind Dir NW NW NW N N NE NW SE W Wind Char LT LT LT LT LT LT LT LT LT Avg Clouds SC SC SC SC SC SC SC FW FW FW FW SC SC SC FW SC SC SC PoP 12hr 0 0 0 0 0 0 0 5 10 $$ TNZ071-230800- Knoxville McGhee Tyson Airport-Blount TN 35.80N 83.98W Elev. 979 ft 140 PM EDT Fri Aug 22 2025 Date 08/22/25 Sat 08/23/25 Sun 08/24/25 Mon EDT 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 70 86 70 83 62 Temp 86 79 74 72 71 70 79 84 83 77 73 72 71 70 76 80 83 77 71 68 64 62 Dewpt 71 72 70 70 69 69 71 72 72 70 71 70 70 70 71 72 71 68 67 64 61 59 RH 61 79 87 93 93 97 77 67 70 79 93 93 97100 85 77 67 74 87 87 90 90 Wind Dir N S SW W SW SE NE E S SW S S SW S W W W W W N N N Wind Spd 3 4 2 2 2 1 1 2 3 3 2 2 1 2 2 3 4 3 2 2 2 2 Clouds SC B1 B1 B1 B1 B1 SC SC SC B2 B2 B1 B2 B2 B1 B1 SC SC FW SC SC FW PoP 12hr 20 70 60 50 5 QPF 12hr 0.05 0.23 0.17 0.15 0 Rain shwrs C S L L L L C C C C C C Tstms C S L L C S S S S C C C Heat index 91 90 88 84 88 Max heat 95 90 91 84 88 Date 08/25 Tue 08/26/25 Wed 08/27/25 Thu 08/28/25 Fri 08/29/25 EDT 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 81 59 78 54 79 55 80 58 80 Temp 78 75 63 59 76 72 60 55 76 72 59 56 78 73 62 59 78 74 Dewpt 58 56 55 54 54 54 52 51 52 51 51 52 55 56 56 56 59 58 PWind Dir N N N NE NE NE N E N Wind Char LT LT LT LT LT LT LT LT LT Avg Clouds FW SC B1 B1 SC SC SC FW FW FW FW SC SC SC SC SC SC SC PoP 12hr 0 0 0 0 0 0 0 5 10 $$ TNZ036-230800- Oak Ridge-Anderson TN 36.00N 84.24W Elev. 913 ft 140 PM EDT Fri Aug 22 2025 Date 08/22/25 Sat 08/23/25 Sun 08/24/25 Mon 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 86 68 84 59 Temp 86 79 74 72 70 70 79 84 83 76 72 70 70 68 77 82 83 78 70 66 62 60 Dewpt 72 72 71 70 69 70 72 73 73 71 70 70 69 68 72 72 70 68 65 62 58 57 RH 63 79 90 93 97100 79 70 72 85 93100 97100 85 72 65 71 84 87 87 90 Wind Dir NE E S W W SW S SE S W W SW W SW W W NW NW NW N N N Wind Spd 2 2 1 1 1 1 1 2 2 2 1 1 1 1 2 2 2 2 3 3 3 2 Clouds SC B1 B1 B1 B1 B1 B1 SC B1 B1 B2 B1 B2 B2 B1 SC SC FW FW FW FW FW PoP 12hr 20 70 60 50 5 QPF 12hr 0.10 0.06 0.17 0.11 0 Rain shwrs S S S L L L L C C C C C C Tstms S S S L L C C S C S C C C Heat index 92 90 89 87 87 Max heat 95 90 91 87 88 Date 08/25 Tue 08/26/25 Wed 08/27/25 Thu 08/28/25 Fri 08/29/25 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 79 57 78 54 78 54 79 57 79 Temp 79 71 61 58 76 72 58 55 76 71 59 55 77 72 61 58 77 73 Dewpt 57 56 53 53 54 53 50 49 52 52 50 50 54 56 55 54 60 58 PWind Dir N N N N NE N NE NE N Wind Char LT LT LT LT LT LT LT LT LT Avg Clouds FW SC B1 B1 SC SC SC FW FW FW FW SC SC SC SC SC SC SC PoP 12hr 0 0 0 0 0 0 0 5 20 Rain shwrs S Tstms S $$ TNZ099-230800- Chattanooga Airport-Hamilton TN 35.03N 85.22W Elev. 688 ft 140 PM EDT Fri Aug 22 2025 Date 08/22/25 Sat 08/23/25 Sun 08/24/25 Mon EDT 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 71 86 70 86 63 Temp 84 79 74 72 72 71 77 83 81 76 73 72 71 70 78 85 83 78 72 69 65 63 Dewpt 73 72 72 71 71 70 73 73 73 72 72 71 70 70 72 72 71 70 67 64 60 58 RH 70 79 93 97 97 97 87 72 77 87 97 97 97100 82 65 67 76 84 84 84 84 Wind Dir SE E S S E E SE SE E S SE E N N SW NW NW N N N N N Wind Spd 4 3 2 1 1 1 2 3 4 2 2 1 1 1 2 3 4 3 3 3 4 4 Clouds B1 SC SC SC SC B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 SC SC FW FW FW FW CL PoP 12hr 20 70 50 50 0 QPF 12hr 0.01 0.21 0.11 0.12 0 Rain shwrs C S S S C L C C C C C C C C Tstms C S S C L C S S C C C Heat index 90 89 86 91 88 Max heat 93 89 91 91 91 Date 08/25 Tue 08/26/25 Wed 08/27/25 Thu 08/28/25 Fri 08/29/25 EDT 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 82 62 79 57 80 57 80 60 80 Temp 81 72 65 62 76 73 62 58 77 73 61 58 77 73 64 60 77 74 Dewpt 59 58 56 55 57 56 53 51 54 55 53 52 57 58 58 57 60 61 PWind Dir N N N N NE N NE NE SE Wind Char LT LT LT LT LT LT LT LT LT Avg Clouds FW SC SC B1 B1 B1 SC FW FW FW FW SC SC SC SC SC SC SC PoP 12hr 0 0 5 5 0 0 5 10 20 Rain shwrs S Tstms S $$ NCZ060-230800- Tusquitee RAWS-Forestry-Cherokee NC 35.07N 84.12W Elev. 1600 ft 140 PM EDT Fri Aug 22 2025 Date 08/22/25 Sat 08/23/25 Sun 08/24/25 Mon 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 66 82 64 83 58 Temp 80 73 68 67 67 66 75 80 79 71 68 67 66 65 75 81 79 71 66 63 60 59 Dewpt 71 69 68 67 66 66 70 70 70 69 68 66 65 65 70 69 68 67 65 63 60 59 RH 74 87100100 97100 84 72 74 93100 97 97100 84 67 69 87 97100100100 Max/Min RH 100 69 100 65 100 Wind Dir SE SE E E E E SE SE SE SE SE N N N W NW NW NW NW N N N Wind Dir Deg 13 12 11 10 10 10 12 12 14 13 12 0 0 0 26 29 31 32 31 33 33 33 Wind Spd 3 2 2 1 1 1 2 4 3 2 1 0 0 0 1 3 4 2 1 1 1 2 Clouds SC B1 SC B1 SC B1 B1 B1 B1 B1 B1 B1 B1 B2 B1 B1 SC FW FW SC SC SC Clouds (%) 46 60 42 54 46 62 62 61 52 56 60 69 69 74 57 58 35 25 22 26 39 38 Vsby 6 10 8 8 7 7 10 6 6 10 7 10 7 7 10 6 6 10 10 10 7 10 PoP 12hr 30 80 50 70 5 QPF 12hr 0.01 0.48 0.08 0.24 0 Rain shwrs L C C L L C C C C C C L L Tstms L C C L L C S C L C Heat index 83 83 84 Max heat 86 83 85 84 84 ChanceThunder 30 60 30 60 5 Max Mix Hgt AGL Mix Hgt 3200 3800 Max Vent Rt 24800 20700 T Wind Dir SE W T Wind Spd 6 4 ADI 25 22 Max LVORI 10 10 Stability B F F B B F F B A G G Ceiling NONE NONE NONE NONE NONE NONE NONE NONE NONE NONE NONE Sta Pres 27.87 27.90 27.91 27.89 27.86 27.88 27.88 27.86 27.84 27.89 27.93 Date 08/25 Tue 08/26/25 Wed 08/27/25 Thu 08/28/25 Fri 08/29/25 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 80 55 77 51 79 52 79 54 79 Temp 79 67 57 57 76 65 55 52 78 65 56 53 78 66 58 55 78 67 Dewpt 57 55 53 51 54 53 52 49 52 52 51 50 54 55 54 54 57 58 PWind Dir NW N NW N N NE S E SE Wind Char LT LT LT LT LT LT LT LT LT Avg Clouds FW FW SC B1 B1 B1 SC SC FW FW FW SC SC SC SC SC SC SC PoP 12hr 0 0 5 5 0 0 5 10 20 Rain shwrs S Tstms 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 $$