2016 Mixing Height Average Std Dev By Local Daylight Time By Local Daylight Time and Season January 516.8 403.7 Hour Annual Std Dev Winter Avg Spring Avg Summer Avg Fall Avg February 701.4 626.7 1 320.9 268.3 438.9 301.3 248.9 258.9 March 771.0 711.4 2 309.1 231.5 410.5 304.8 266.5 254.9 April 1048.5 1122.1 3 317.3 265.3 402.7 334.0 269.3 263.4 May 1090.1 1147.4 4 307.9 224.0 410.5 282.4 270.2 269.3 June 1262.7 1471.5 5 307.2 209.1 381.5 317.7 265.0 264.9 July 1256.2 1436.8 6 325.1 269.0 386.3 358.7 282.6 272.9 August 1208.6 1391.5 7 361.8 314.5 378.6 412.5 365.7 289.7 September 1186.6 1401.6 8 482.4 428.4 413.2 553.5 646.7 313.8 October 846.5 989.9 9 897.4 936.8 470.8 971.6 1622.7 515.7 November 613.6 597.9 10 1356.3 1119.2 592.4 1345.0 2207.2 1271.1 December 529.7 380.1 11 1595.4 1169.4 757.0 1578.4 2398.2 1639.2 12 1767.8 1146.4 841.5 1735.1 2498.3 1988.6 Annual 919.3 13 1942.8 1176.3 936.9 1932.6 2717.4 2176.0 Max 9787.2 14 2006.6 1229.5 980.1 2093.5 2796.3 2147.0 Min 120.0 15 2089.4 1207.4 1022.0 2178.7 2953.3 2192.9 Std Dev 1086.0 16 2126.8 1168.2 1055.9 2248.5 2892.8 2300.4 17 1989.6 1278.8 812.6 2139.4 2810.9 2184.9 18 1356.4 1380.7 551.5 1600.9 2489.9 768.1 19 558.5 799.2 468.6 802.2 583.1 377.1 20 333.7 413.6 469.9 355.4 206.7 304.1 21 355.3 442.2 478.7 408.1 232.2 303.0 22 319.8 353.5 410.5 344.7 252.4 272.2 23 310.9 287.9 411.4 327.3 236.7 268.7 24 325.5 293.9 439.2 329.8 266.1 267.7 2016 Synoptic Pressure Gradient ORNL-NAM Boundary Layer Wind (kts) Average Std Dev Average Std Dev January 0.012 0.007 January 4.7 2.1 February 0.012 0.007 February 5.3 2.3 March 0.010 0.005 March 5.2 2.2 April 0.009 0.005 April 5.3 2.2 May 0.007 0.004 May 4.7 1.6 June 0.004 0.002 June 4.2 1.3 July 0.004 0.002 July 4.1 1.5 August 0.004 0.002 August 3.9 1.3 September 0.005 0.003 September 4.0 1.2 October 0.007 0.005 October 4.5 1.8 November 0.008 0.006 November 6.1 5.4 December 0.012 0.007 October 5.1 2.7 Annual 0.008 0.005 ORNL 850-mb Wind (kts) Average Std Dev June 12.0 6.7 July 10.8 7.0 August 9.9 5.5 September 9.6 5.3 October 15.3 8.2 November 17.5 12.3 December 25.6 13.9