Point Forecast Matrices
Issued by NWS Knoxville/Tri Cities, TN
Issued by NWS Knoxville/Tri Cities, TN
719 FOUS54 KMRX 190331 PFMMRX Point Forecast Matrices National Weather Service Morristown TN 1131 PM EDT Mon May 18 2026 TNZ017-190445- Tri Cities Airport-Sullivan TN 36.50N 82.41W Elev. 1536 ft 1131 PM EDT Mon May 18 2026 Date Mon 05/18/26 Tue 05/19/26 Wed 05/20/26 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 62 89 63 87 Temp 66 63 65 79 85 88 84 72 67 63 65 79 85 83 78 Dewpt 56 57 59 63 61 60 63 60 58 57 59 63 64 65 66 RH 70 81 81 58 45 39 49 66 73 81 81 58 50 55 67 Wind Dir SE E SE W W W W S S N S W W W NW Wind Spd 2 1 1 2 5 5 2 1 0 0 0 4 8 6 3 Clouds B1 B1 SC FW FW SC SC B1 B1 SC SC SC SC B1 B2 PoP 12hr 0 0 0 40 QPF 12hr 0 0 0 0.05 Rain shwrs C C L Tstms C C S Date Thu 05/21/26 Fri 05/22/26 Sat 05/23/26 Sun 05/24/26 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 62 82 61 80 61 81 61 83 Temp 65 64 79 73 63 62 76 76 64 63 77 77 64 63 79 78 Dewpt 64 63 68 66 62 60 66 64 61 61 68 67 63 63 69 68 PWind Dir N NE E SE SE SW S SW Wind Char LT LT LT LT LT LT LT LT Avg Clouds B1 B2 B2 B2 B2 B2 B1 B2 B1 B2 B2 B2 B2 B2 B2 B1 PoP 12hr 60 90 60 80 50 90 60 90 Rain shwrs L C L D L C L D C C L D L C L D Tstms S S C S S C S S C S C $$ TNZ071-190445- Knoxville McGhee Tyson Airport-Blount TN 35.80N 83.98W Elev. 979 ft 1131 PM EDT Mon May 18 2026 Date Mon 05/18/26 Tue 05/19/26 Wed 05/20/26 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 67 90 68 88 Temp 72 69 69 81 87 89 85 75 72 69 70 82 87 84 78 Dewpt 60 59 60 63 62 60 62 62 59 59 61 65 67 68 69 RH 66 70 73 54 43 38 46 64 64 70 73 56 52 59 74 Wind Dir SW SW SW SW SW SW SW SW S S N W W W NW Wind Spd 3 3 1 5 6 9 5 3 2 1 0 5 6 6 3 Clouds SC SC SC FW SC B1 SC SC B2 B1 SC SC B1 B1 B2 PoP 12hr 0 0 5 30 QPF 12hr 0 0 0 0.05 Rain shwrs C C C Tstms C C S Heat index 90 87 Max heat 87 90 81 90 90 Date Thu 05/21/26 Fri 05/22/26 Sat 05/23/26 Sun 05/24/26 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 66 84 66 83 66 83 66 84 Temp 69 67 82 78 69 67 80 79 69 68 79 79 69 67 82 79 Dewpt 65 65 70 69 65 65 71 69 65 65 71 69 64 65 71 70 PWind Dir NE N E SW SW SW S SW Wind Char LT LT LT LT LT LT LT LT Avg Clouds B1 B2 B1 B1 B2 B1 B2 B2 B2 B2 B2 B2 B2 B2 B2 B1 PoP 12hr 50 90 50 80 80 80 60 80 Rain shwrs C S C D C C L D D L L D L C C D Tstms S S C S S C C S C S S C $$ TNZ036-190445- Oak Ridge-Anderson TN 36.00N 84.24W Elev. 913 ft 1131 PM EDT Mon May 18 2026 Date Mon 05/18/26 Tue 05/19/26 Wed 05/20/26 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 66 88 65 86 Temp 71 68 68 78 86 88 83 74 70 67 67 79 85 82 76 Dewpt 62 60 61 64 64 63 63 62 61 61 62 67 69 70 70 RH 73 76 78 62 48 43 51 66 73 81 84 67 59 67 82 Wind Dir SW W SW SW SW SW SW SW SW SW SW SW SW W NW Wind Spd 2 2 2 5 6 6 3 2 1 1 1 3 5 4 2 Clouds B1 B1 SC SC SC B1 B1 SC B2 SC SC SC B1 B2 B2 PoP 12hr 0 5 5 60 QPF 12hr 0 0 0 0.09 Rain shwrs C C L L C Tstms S C C S Heat index 89 86 Max heat 87 89 89 89 Date Thu 05/21/26 Fri 05/22/26 Sat 05/23/26 Sun 05/24/26 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 83 63 82 64 82 64 84 Temp 67 65 81 76 67 65 78 77 68 66 78 77 67 66 81 78 Dewpt 65 65 70 70 65 65 72 70 65 65 71 70 64 65 72 71 PWind Dir N E E SW SW SW SW SW Wind Char LT LT LT LT LT LT LT LT Avg Clouds B2 B2 B1 B2 B2 B1 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 PoP 12hr 40 80 50 90 80 80 60 70 Rain shwrs C S C D C C L D D L L D L C C L Tstms S S C S S C C S C S S C $$ TNZ099-190445- Chattanooga Airport-Hamilton TN 35.03N 85.22W Elev. 688 ft 1131 PM EDT Mon May 18 2026 Date Mon 05/18/26 Tue 05/19/26 Wed 05/20/26 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 68 89 68 88 Temp 72 69 70 78 87 89 85 75 71 68 70 81 86 84 78 Dewpt 63 61 60 64 66 64 65 64 63 62 63 67 70 70 70 RH 73 76 71 62 50 44 51 69 76 81 78 63 59 63 76 Wind Dir S SE S S S S S S N N N SW SW W NW Wind Spd 2 3 3 4 5 6 3 1 0 0 0 1 4 4 2 Clouds FW SC SC B1 B1 B1 SC SC SC SC B1 SC B1 B1 B1 PoP 12hr 0 10 10 70 QPF 12hr 0 0 0 0.07 Rain shwrs C C L L C Tstms S C C S Heat index 91 88 Max heat 83 89 90 82 91 91 Date Thu 05/21/26 Fri 05/22/26 Sat 05/23/26 Sun 05/24/26 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 66 85 66 84 66 84 66 85 Temp 68 68 82 78 69 68 80 79 69 68 80 79 69 68 83 80 Dewpt 66 65 70 70 66 65 71 69 65 65 71 70 66 65 71 71 PWind Dir NW S SE S S S S SW Wind Char LT LT LT GN LT LT LT LT Avg Clouds B1 B1 B1 B1 B1 B2 B2 B1 B2 B2 B2 B2 B2 B2 B2 B1 PoP 12hr 40 80 60 70 80 70 60 70 Rain shwrs C S C D C L C L D L L L L C C L Tstms S S C C S S C C S C S S C $$ NCZ060-190445- Tusquitee RAWS-Forestry-Cherokee NC 35.07N 84.12W Elev. 1600 ft 1131 PM EDT Mon May 18 2026 Date Mon 05/18/26 Tue 05/19/26 Wed 05/20/26 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 61 88 62 87 Temp 65 62 63 77 85 86 79 69 64 63 64 79 85 82 76 Dewpt 59 57 59 62 58 57 61 59 58 57 59 64 66 65 66 RH 81 84 87 60 40 37 54 70 81 81 84 60 53 56 71 Min/Max RH 90 36 84 53 Wind Dir E SE SE S S S S SE N N N W W W N Wind Dir Deg 11 12 12 17 19 18 16 13 0 0 0 24 25 27 0 Wind Spd 2 2 1 1 3 4 2 1 0 0 0 1 2 2 0 Clouds FW SC FW SC B1 SC B1 SC B1 SC SC SC SC B1 B1 Clouds (%) 14 37 24 45 55 44 60 36 66 50 33 37 48 53 66 Vsby 10 10 10 10 10 10 10 10 10 10 10 PoP 12hr 0 0 0 60 QPF 12hr 0 0 0 0.03 Rain shwrs S S L L C Tstms S C C S ChanceThunder 0 0 0 40 Max Mix Hgt AGL Mix Hgt 5900 4900 Max Vent Rt 47300 24300 T Wind Dir S W T Wind Spd 8 5 ADI 47 25 Max LVORI 6 5 Stability G G B B F G A B Ceiling NONE NONE NONE NONE NONE NONE NONE NONE Sta Pres 28.09 28.14 28.09 28.06 28.04 28.07 28.02 28.00 Date Thu 05/21/26 Fri 05/22/26 Sat 05/23/26 Sun 05/24/26 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 62 84 61 81 62 82 62 84 Temp 64 64 80 75 64 64 77 75 64 63 78 76 64 64 80 77 Dewpt 63 62 68 67 63 62 68 65 63 62 69 66 63 63 70 67 PWind Dir N SW SE S SE S SE S Wind Char LT LT LT LT LT LT LT LT Avg Clouds B1 B1 B1 B1 B2 B1 B2 B1 B2 B2 B2 B2 B2 B1 B2 B1 PoP 12hr 40 90 60 70 70 70 50 70 Rain shwrs C C D L C C L L C C L C C C L Tstms S S C C S C C S C S 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 $$