UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025122612.upa.cvt Date: 1200Z 26 DEC 25 Searching for KIAD... Searching the city database file for: KIAD ... Date:1200Z 26 DEC 25 Station: KIAD WMO ident: 72403 Latitude: 38.95 Longitude: -77.45 Elevation: 98.00 ------------------------------------------------------------------------------- LEV PRES HGHT TEMP DEWP RH DD WETB DIR SPD THETA THE-V THE-W THE-E W mb m C C % C C deg knt K K K K g/kg ------------------------------------------------------------------------------- SFC 1012 98 0.4 -8.6 51 9.0 -2.6 45 6 272.6 272.9 269.9 278.1 1.97 1 1000 187 0.0 -10.0 47 10.0 -3.1 40 10 273.1 273.4 270.0 278.1 1.78 2 966 463 -2.5 -10.5 54 8.0 -5.0 50 15 273.3 273.6 270.1 278.3 1.78 3 953 570 -2.7 -13.7 42 11.0 -5.8 50 17 274.2 274.4 270.0 278.2 1.39 4 946 629 -1.9 -16.9 31 15.0 -5.8 50 17 275.6 275.8 270.4 278.7 1.07 5 942 663 -1.7 -14.7 36 13.0 -5.4 51 16 276.1 276.3 271.1 279.9 1.30 6 936 714 -1.3 -19.3 24 18.0 -5.8 53 13 277.0 277.2 270.9 279.7 0.89 7 933 739 -0.7 -14.7 34 14.0 -4.7 53 12 277.9 278.1 272.1 281.7 1.31 8 925 808 -0.9 -11.9 43 11.0 -4.3 55 9 278.4 278.7 273.0 283.1 1.66 9 923 825 -0.9 -10.9 47 10.0 -4.1 53 8 278.6 278.9 273.3 283.7 1.80 10 922 834 -0.7 -9.7 51 9.0 -3.7 51 8 278.9 279.2 273.8 284.5 1.98 11 912 921 0.0 -10.0 47 10.0 -3.3 43 5 280.4 280.8 274.6 286.1 1.96 12 909 947 0.0 -14.0 34 14.0 -4.2 54 5 280.7 280.9 273.9 284.9 1.42 13 892 1099 1.8 -20.2 18 22.0 -4.1 116 3 284.1 284.2 274.9 286.7 0.86 14 881 1198 1.4 -33.6 5 35.0 -5.5 157 2 284.7 284.7 274.3 285.5 0.25 15 875 1253 2.8 -40.2 2 43.0 -4.9 178 3 286.7 286.7 275.2 287.1 0.13 16 859 1403 4.0 -44.0 2 48.0 -4.4 230 7 289.5 289.5 276.5 289.8 0.09 17 850 1488 3.6 -44.4 2 48.0 -4.7 260 9 289.9 289.9 276.7 290.2 0.09 18 818 1799 3.0 264 16 292.5 19 808 1899 3.4 -30.6 6 34.0 -4.6 268 19 293.9 294.0 279.1 295.2 0.37 20 804 1939 3.2 -20.8 15 24.0 -3.8 270 19 294.1 294.3 280.0 297.0 0.91 21 801 1969 3.6 -8.4 41 12.0 -1.2 272 20 294.9 295.3 282.4 302.5 2.53 22 794 2041 3.6 -7.4 44 11.0 -0.9 275 22 295.6 296.1 283.0 303.9 2.76 23 787 2113 3.6 -9.4 38 13.0 -1.4 279 23 296.4 296.8 282.8 303.6 2.38 24 765 2342 2.0 -8.0 47 10.0 -2.0 290 22 297.1 297.6 283.5 305.3 2.73 25 758 2416 2.4 -6.6 51 9.0 -1.4 294 21 298.3 298.8 284.4 307.6 3.07 26 720 2829 -1.3 -9.3 54 8.0 -4.4 285 23 298.6 299.1 284.0 306.6 2.62 27 708 2963 -2.3 -10.3 54 8.0 -5.3 285 24 299.0 299.4 284.0 306.5 2.46 28 700 3053 -2.5 -10.5 54 8.0 -5.5 285 25 299.7 300.2 284.3 307.3 2.45 29 683 3248 -3.9 -12.9 50 9.0 -7.0 287 28 300.3 300.6 284.1 306.7 2.07 30 678 3306 -4.1 -12.1 54 8.0 -7.0 287 29 300.7 301.1 284.4 307.6 2.23 31 661 3506 -4.9 -12.9 53 8.0 -7.7 289 32 302.0 302.4 284.8 308.7 2.14 32 652 3614 -5.1 -13.1 53 8.0 -7.9 290 34 302.9 303.3 285.2 309.6 2.14 33 644 3711 -5.1 -17.1 38 12.0 -8.9 290 35 304.0 304.3 284.9 309.0 1.55 34 628 3909 -5.9 -16.9 41 11.0 -9.4 292 37 305.3 305.6 285.5 310.5 1.62 35 601 4252 -8.1 -17.1 48 9.0 -10.9 295 39 306.6 306.9 286.0 312.0 1.66 36 588 4422 -9.3 -18.3 48 9.0 -12.0 296 42 307.1 307.4 286.1 312.1 1.54 37 585 4462 -9.5 -19.5 44 10.0 -12.4 296 43 307.3 307.6 286.0 311.9 1.39 38 578 4555 -9.7 -17.7 52 8.0 -12.1 297 44 308.2 308.5 286.6 313.5 1.65 39 572 4636 -10.1 -20.1 44 10.0 -12.9 298 46 308.6 308.9 286.4 313.1 1.35 40 567 4703 -9.5 -25.5 26 16.0 -13.5 298 47 310.1 310.3 286.4 313.0 0.85 41 565 4731 -9.5 -25.5 26 16.0 -13.5 299 48 310.4 310.6 286.5 313.3 0.85 42 561 4786 -9.7 -24.7 28 15.0 -13.5 299 49 310.8 311.0 286.7 313.9 0.92 43 548 4967 -9.9 -30.9 16 21.0 -14.5 299 52 312.7 312.8 286.9 314.5 0.53 44 540 5080 -10.7 -25.7 28 15.0 -14.4 299 53 313.0 313.2 287.4 316.0 0.87 45 533 5181 -11.3 -25.3 30 14.0 -14.8 298 55 313.5 313.7 287.6 316.6 0.92 46 522 5341 -12.1 -25.1 33 13.0 -15.3 297 57 314.4 314.6 288.0 317.6 0.95 47 519 5385 -12.1 -26.1 30 14.0 -15.5 297 57 314.9 315.1 288.1 317.9 0.88 48 516 5429 -12.1 -26.1 30 14.0 -15.5 297 58 315.4 315.6 288.2 318.5 0.88 49 509 5534 -12.7 -24.7 36 12.0 -15.7 296 59 315.9 316.1 288.5 319.4 1.01 50 504 5609 -13.3 -21.3 51 8.0 -15.5 295 60 316.1 316.4 289.0 320.8 1.38 51 500 5670 -14.1 -21.1 55 7.0 -16.0 295 61 315.8 316.1 288.9 320.6 1.42 52 451 6442 -20.9 -24.2 75 3.3 -21.7 294 63 316.8 317.0 289.0 320.8 1.20 53 426 6861 -23.7 -26.0 81 2.3 -24.2 292 61 318.4 318.6 289.4 322.1 1.08 54 403 7266 -24.5 -28.0 73 3.5 -25.2 290 59 322.5 322.6 290.5 325.8 0.95 55 400 7320 -25.1 -28.2 75 3.1 -25.7 295 61 322.4 322.6 290.5 325.7 0.94 56 300 9340 -41.5 -44.4 73 2.9 -41.7 300 84 326.9 326.9 291.1 327.8 0.25 57 250 10550 -51.3 -58.3 43 7.0 -51.5 305 98 329.8 329.8 291.7 330.0 0.06 58 218 11423 -57.3 -64.3 41 7.0 -57.4 300 113 333.7 333.7 292.7 333.8 0.03 59 200 11960 -61.1 -68.1 39 7.0 -61.2 305 110 336.0 336.0 293.3 336.1 0.02 60 164 13182 -66.7 -76.7 23 10.0 -66.8 310 102 346.2 346.2 295.8 346.3 0.01 61 150 13730 -61.7 -83.7 4 22.0 -61.9 310 108 363.8 363.8 299.4 363.8 0.00 62 100 16220 -68.7 -88.7 4 20.0 -68.8 295 75 395.0 395.0 304.5 395.0 0.00 63 86 17126 -66.5 -88.5 3 22.0 -66.7 306 87 416.8 416.8 307.3 416.8 0.00 64 79 17635 -69.5 -89.5 4 20.0 -69.6 314 83 420.9 420.9 307.8 420.9 0.00 65 73 18108 -67.1 -89.1 3 22.0 -67.2 308 76 435.6 435.6 309.4 435.6 0.00 66 70 18360 -68.3 -88.3 4 20.0 -68.4 310 60 438.3 438.3 309.7 438.3 0.00 67 61 19179 -70.7 -89.7 4 19.0 -70.8 312 51 450.5 450.5 310.9 450.5 0.00 68 59 19377 -70.1 -90.1 4 20.0 -70.2 317 53 456.2 456.2 311.4 456.2 0.00 69 58 19478 -68.5 -89.5 3 21.0 -68.7 319 54 462.0 462.0 312.0 462.0 0.00 70 50 20360 -71.5 -90.5 4 19.0 -71.6 310 36 475.0 475.0 313.1 475.0 0.00 71 49 20479 -71.7 -90.7 4 19.0 -71.8 314 30 477.3 477.3 313.2 477.3 0.00 72 44 21120 -68.9 -89.9 3 21.0 -69.1 299 41 499.0 499.0 314.9 499.1 0.00 73 42 21399 -68.9 -90.9 3 22.0 -69.1 295 48 505.7 505.7 315.4 505.7 0.00 74 39 21849 -62.9 -88.9 2 26.0 -63.4 300 54 531.7 531.7 317.1 531.8 0.00 75 36 22341 -64.5 -90.5 2 26.0 -65.0 311 43 539.9 539.9 317.5 539.9 0.00 76 36 22341 -63.3 -89.3 2 26.0 -63.8 311 43 543.0 543.0 317.7 543.0 0.00 77 33 22876 -63.7 -90.7 1 27.0 -64.3 309 35 555.6 555.6 318.4 555.6 0.00 78 31 23264 -58.5 -88.5 1 30.0 -59.6 283 43 579.7 579.7 319.6 579.7 0.00 79 30 23470 -60.1 -88.1 1 28.0 -61.0 255 43 580.8 580.8 319.7 580.8 0.01 80 29 23681 -60.9 -88.9 1 28.0 -61.7 261 43 584.3 584.3 319.9 584.3 0.00 81 26 24357 -61.3 -89.3 1 28.0 -62.2 279 42 601.7 601.7 320.7 601.7 0.01 82 26 24357 -59.9 -88.9 1 29.0 -61.0 279 42 605.6 605.6 320.9 605.7 0.01 83 24 24852 -63.5 -89.5 2 26.0 -64.3 286 45 609.2 609.2 321.0 609.2 0.01 84 23 25114 -62.5 -89.5 1 27.0 -63.4 288 41 619.6 619.6 321.5 619.6 0.01 85 22 25387 -63.5 -90.5 1 27.0 -64.3 287 42 624.5 624.5 321.7 624.6 0.00 86 21 25675 -58.5 -88.5 1 30.0 -60.0 278 51 648.0 648.0 322.6 648.1 0.01 87 20 25980 -60.9 -87.9 2 27.0 -62.1 260 52 649.8 649.8 322.7 649.8 0.01 88 19 26299 -61.5 -89.5 1 28.0 -62.7 259 50 657.5 657.5 323.0 657.5 0.01 89 19 26299 -60.3 -88.3 1 28.0 -61.6 259 50 661.2 661.2 323.1 661.3 0.01 90 18 26637 -60.9 -88.9 1 28.0 -62.2 256 52 669.6 669.6 323.4 669.7 0.01 91 17 26995 -58.3 -88.3 1 30.0 -60.1 253 54 689.0 689.0 324.1 689.1 0.01 92 16 27377 -59.5 -88.5 1 29.0 -61.2 250 57 697.1 697.2 324.3 697.2 0.01 93 15 27784 -56.9 -87.9 1 31.0 -59.2 246 65 718.8 718.8 325.0 718.9 0.01 94 15 27784 -56.7 -86.7 1 30.0 -59.0 246 65 719.4 719.4 325.0 719.6 0.01 95 12 29202 -56.5 -86.5 1 30.0 -59.3 268 79 767.6 767.6 326.4 767.7 0.02 96 11 29758 -54.5 -85.5 1 31.0 -58.1 265 78 794.2 794.2 327.1 794.4 0.02 97 10 30370 -54.1 -86.1 1 32.0 -58.1 260 76 817.6 817.6 327.7 817.8 0.02 98 9.5 30698 -54.9 -85.9 1 31.0 -58.7 259 80 826.7 826.7 327.9 826.9 0.03 99 8.7 31265 -50.1 -84.1 1 34.0 -56.0 256 87 866.4 866.4 328.7 866.7 0.04 100 7.8 31980 -48.3 -83.3 1 35.0 -55.4 253 96 901.1 901.1 329.4 901.6 0.05 101 7.5 32237 -49.3 -83.3 1 34.0 -56.1 252 99 907.2 907.2 329.5 907.7 0.05 102 7.0 32690 -48.1 -83.1 1 35.0 -55.7 250 104 930.2 930.2 330.0 930.8 0.06 103 6.9 32785 -47.7 -82.7 1 35.0 -55.6 935.7 935.7 330.1 936.4 0.06 104 6.5 33178 -48.9 -83.9 1 35.0 -56.5 946.8 946.8 330.3 947.3 0.05 105 6.0 33708 -45.7 -81.7 1 36.0 -55.2 982.5 982.6 330.9 983.5 0.08 TRP 164 13182 -66.7 -76.7 23 10.0 -66.8 310 102 346.2 346.2 295.8 346.3 0.01 WND 218 11423 -57.3 -64.3 41 7.0 -57.4 300 113 333.7 333.7 292.7 333.8 0.03 Sounding variables and indices 1000-500 mb thick: 5483.00 m Freezing level: 1000.00 mb = 187.00 m = 613.51 ft Freezing level: 912.00 mb = 920.90 m = 3021.29 ft Freezing level: 733.35 mb = 2683.99 m = 8805.62 ft Wetbulb zero: Below ground Precipitable water: 0.39 inches Sfc-500 mean rel hum: 39.95 % Est. max temperature: 16.78 C = 62.20 F Sfc-Lift cond lev (LCL): 878.99 mb = 1216.74 m = 3991.88 ft T: 1.87 C 700-500 lapse rate: 4.43 C/km ThetaE index: 1.20 C Layer 909.0- 892.0 mb Conv cond level (CCL): 452.82 mb = 6411.93 m = 21036.25 ft Mean mixing ratio: 1.63 g/kg Conv temperature: 44.66 C = 112.39 F Cap Strength: 30.35 C Lifted Index: 30.06 C Risk: None Lifted Index @300 mb: 33.42 C Lifted Index @700 mb: 20.39 C Showalter Index: 21.27 C Risk: None Total Totals Index: -12.60 C Risk: None Vertical Totals Index: 17.70 C Cross Totals Index: -30.30 C K Index: -34.70 Risk: None Sweat Index: 79.00 Risk: None Energy Index: 6.31 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 30.47 J/kg Max Up Vert Vel: 7.81 m/s Conv Inhibition (B-): 61688.07 J/kg Cap Strength: 30.34 C Lift Cond Lev (LCL): 815.55 mb = 1823.48 m = 5982.47 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 325 at 23 knt ---------------------------------------------------------- TRUE/GROUND REL | STORM REL LEV P H DIR SPD U V | DIR SPD U V mb m knt m/s | knt m/s ---------------------------------------------------------- 0 1012 98 45 6 -4.2 -4.2 | 130 23 -17.4 14.8 1 1000 187 40 10 -6.4 -7.7 | 120 23 -19.6 11.4 2 985 305 50 11 -8.4 -7.1 | 119 25 -21.6 12.0 3 948 610 50 18 -13.8 -11.6 | 106 28 -26.9 7.5 4 925 808 55 9 -7.4 -5.2 | 124 25 -20.5 13.9 5 913 914 40 5 -3.2 -3.8 | 133 22 -16.4 15.2 6 879 1219 165 2 -0.5 1.9 | 147 25 -13.7 21.0 7 850 1488 260 9 8.9 1.6 | 168 21 -4.3 20.6 8 846 1524 260 10 9.8 1.7 | 171 21 -3.3 20.8 9 815 1829 265 17 16.9 1.5 | 190 21 3.8 20.5 10 785 2134 280 24 23.6 -4.2 | 215 18 10.5 14.9 11 755 2438 295 21 19.0 -8.9 | 210 12 5.9 10.2 12 727 2743 285 22 21.3 -5.7 | 211 16 8.1 13.4 13 700 3053 285 25 24.1 -6.5 | 221 17 11.0 12.6 14 648 3658 290 35 32.9 -12.0 | 250 21 19.8 7.1 15 599 4267 295 39 35.3 -16.5 | 263 22 22.2 2.6 16 554 4877 300 51 44.2 -25.5 | 282 32 31.0 -6.5 17 500 5670 295 61 55.3 -25.8 | 279 43 42.1 -6.7 18 492 5791 295 62 56.2 -26.2 | 279 44 43.1 -7.2 19 472 6096 295 64 58.0 -27.0 | 280 46 44.9 -8.0 20 400 7315 290 59 55.4 -20.2 | 272 42 42.3 -1.1 21 400 7320 295 61 55.3 -25.8 | 279 43 42.1 -6.7 22 383 7620 295 66 59.8 -27.9 | 281 48 46.7 -8.8 23 308 9144 300 82 71.0 -41.0 | 291 62 57.9 -22.0 24 300 9340 300 84 72.7 -42.0 | 291 64 59.6 -23.0 25 257 10363 305 90 73.7 -51.6 | 298 69 60.6 -32.6 26 250 10550 305 98 80.3 -56.2 | 299 77 67.1 -37.2 27 218 11423 300 113 97.9 -56.5 | 294 93 84.7 -37.5 28 212 11582 300 113 97.9 -56.5 | 294 93 84.7 -37.5 29 200 11960 305 110 90.1 -63.1 | 300 89 77.0 -44.0 30 164 13182 310 102 78.1 -65.6 | 306 80 65.0 -46.5 31 150 13730 310 108 82.7 -69.4 | 306 86 69.6 -50.4 32 136 14326 305 106 86.8 -60.8 | 300 85 73.7 -41.8 33 117 15240 310 85 65.1 -54.6 | 304 63 52.0 -35.6 34 112 15545 315 75 53.0 -53.0 | 310 52 39.9 -34.0 35 101 16154 300 69 59.8 -34.5 | 288 49 46.6 -15.5 36 100 16220 295 75 68.0 -31.7 | 283 56 54.8 -12.7 37 96 16459 295 75 68.0 -31.7 | 283 56 54.8 -12.7 38 91 16764 300 90 77.9 -45.0 | 292 70 64.8 -26.0 39 78 17678 315 83 58.7 -58.7 | 311 60 45.6 -39.6 40 71 18288 305 73 59.8 -41.9 | 296 52 46.7 -22.8 41 70 18360 310 60 46.0 -38.6 | 301 38 32.8 -19.5 42 64 18898 305 49 40.1 -28.1 | 289 28 27.0 -9.1 43 58 19507 320 54 34.7 -41.4 | 316 31 21.6 -22.3 44 52 20117 325 33 18.9 -27.0 | 324 10 5.8 -8.0 45 50 20360 310 36 27.6 -23.1 | 286 15 14.4 -4.1 46 49 20422 315 29 20.5 -20.5 | 281 8 7.4 -1.5 47 43 21336 295 44 39.9 -18.6 | 269 27 26.7 0.5 48 41 21641 295 60 54.4 -25.4 | 279 42 41.2 -6.3 49 35 22555 315 38 26.9 -26.9 | 300 16 13.7 -7.8 50 33 22860 310 34 26.0 -21.9 | 282 13 12.9 -2.8 51 32 23165 295 44 39.9 -18.6 | 269 27 26.7 0.5 52 30 23470 260 40 39.4 6.9 | 225 37 26.3 26.0 53 30 23470 255 43 41.5 11.1 | 223 41 28.4 30.2 54 26 24384 280 42 41.4 -7.3 | 247 31 28.2 11.8 55 25 24689 285 48 46.4 -12.4 | 259 34 33.2 6.6 56 22 25298 290 38 35.7 -13.0 | 255 23 22.6 6.0 57 21 25603 280 52 51.2 -9.0 | 255 39 38.1 10.0 58 20 25908 270 47 47.0 -0.0 | 241 39 33.9 19.0 59 20 25980 260 52 51.2 9.0 | 234 47 38.1 28.1 60 19 26213 260 49 48.3 8.5 | 232 45 35.1 27.6 61 16 27432 250 57 53.6 19.5 | 226 56 40.4 38.5 62 15 27737 245 64 58.0 27.0 | 224 64 44.9 46.1 63 13 28956 255 79 76.3 20.4 | 238 74 63.2 39.5 64 12 29261 270 79 79.0 -0.0 | 254 69 65.9 19.0 65 10 30370 260 76 74.8 13.2 | 242 70 61.7 32.2 66 7 32690 250 104 97.7 35.6 | 237 101 84.6 54.6 Wind Parameters Mean winds (0-6000m): 295.4 at 30.9 knts Storm direction: 325.4 at 23.1 knts Shear (0-3000m) pos: 4.2 neg: 0.8 tot: 5.0 10-3/s Storm rel Dir Shear (0-3000m): 93.3 deg Storm rel helicity (0-3000m) pos: 283.0 neg: -72.3 tot: 210.7 m^2/s^2 ave: 70.2 10^-3 m/s^2 rel: 0.49 Storm rel vorticity (0-3000m) horiz: 12.6 stream: 6.1 10^-3/s Energy-Hel index: 0.05 Bulk Rich Number: 0.17 Bulk Shear: 184.43 m/s Storm Parameters ------------------------------------------------------------------------------- Depth Mean Inflow| Shear | Helicity | Vorticity AGL Dir Spd Dir Spd| Pos Neg Tot| Pos Neg Tot Ave Rel | Hor Strm m knt knt| 10^-3/s | m^2/s^2 m/s^2 | 10^-3/s ------------------------------------------------------------------------------- 500 48 12 116 25| 12.1 0.0 12.1| 0.0 -68.4 -68.4 -136.8 -0.83| 13.1-10.8 1000 50 11 120 25| 3.0 0.0 3.0|105.0 -68.4 36.6 36.6 0.17| 15.9 2.7 1500 44 9 123 23| 5.8 0.0 5.8|195.2 -68.4 126.8 84.6 0.41| 16.2 6.7 2000 335 11 137 12| 7.0 0.0 7.0|263.0 -68.4 194.6 97.3 0.53| 15.5 8.3 2500 305 13 169 12| 5.1 0.0 5.1|267.9 -72.3 195.6 78.2 0.47| 14.0 6.6 3000 297 15 181 12| 4.2 0.8 5.0|283.0 -72.3 210.7 70.2 0.49| 12.6 6.1 4000 293 20 203 12| 4.7 0.6 5.2|345.9 -72.3 273.6 68.4 0.55| 11.2 6.2 5000 295 25 228 13| 5.3 0.5 5.8|413.9 -75.2 338.7 67.7 0.55| 10.7 5.9 6000 295 31 248 16| 4.4 1.3 5.8|422.4 -88.9 333.5 55.6 0.49| 9.9 4.9 Wrote GIF file: /home/apache/climate/data/raob//KIAD/skewt/KIAD.skewt.20251226.12.gif