UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025122600.upa.cvt Date: 0000Z 26 DEC 25 Searching for KIAD... Searching the city database file for: KIAD ... Date:0000Z 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 1007 98 12.4 -0.6 41 13.0 6.4 335 9 285.0 285.6 279.2 295.3 3.63 1 1000 144 12.0 -2.0 38 14.0 5.8 330 15 285.1 285.7 278.9 294.6 3.30 2 935 702 7.6 -4.4 42 12.0 2.6 330 28 286.2 286.7 279.0 294.7 2.95 3 925 790 6.6 -4.4 45 11.0 2.0 335 28 286.1 286.6 278.9 294.6 2.98 4 864 1345 1.8 -6.2 55 8.0 -1.3 340 30 286.7 287.2 279.0 294.8 2.78 5 857 1410 3.4 -9.6 38 13.0 -1.4 342 33 289.0 289.4 279.3 295.4 2.15 6 850 1477 3.8 -11.2 32 15.0 -1.6 345 36 290.1 290.5 279.5 295.8 1.91 7 848 1496 4.2 -12.8 28 17.0 -1.7 344 37 290.7 291.0 279.4 295.8 1.68 8 835 1622 4.4 -15.6 22 20.0 -2.2 337 40 292.2 292.5 279.7 296.4 1.36 9 822 1750 4.8 -12.2 28 17.0 -1.3 330 44 294.0 294.3 281.1 299.5 1.82 10 807 1900 4.0 -11.0 33 15.0 -1.6 324 46 294.7 295.0 281.7 300.9 2.04 11 803 1940 4.6 -8.4 38 13.0 -0.6 323 46 295.7 296.2 282.7 303.4 2.52 12 772 2259 2.2 -8.8 44 11.0 -2.1 320 48 296.5 297.0 283.1 304.2 2.54 13 751 2482 1.8 -9.2 44 11.0 -2.5 319 49 298.4 298.9 283.8 306.2 2.53 14 750 2493 1.8 -9.2 44 11.0 -2.5 319 49 298.5 299.0 283.9 306.3 2.54 15 747 2525 1.8 -9.2 44 11.0 -2.5 319 50 298.9 299.3 284.1 306.7 2.55 16 733 2677 1.4 -10.6 40 12.0 -3.2 316 51 300.1 300.5 284.2 307.2 2.32 17 700 3046 -1.9 -12.9 43 11.0 -5.8 320 46 300.4 300.8 284.1 306.7 2.02 18 697 3080 -2.1 -13.1 43 11.0 -6.0 320 46 300.5 300.9 284.1 306.8 2.00 19 672 3370 -2.9 -15.9 36 13.0 -7.2 323 48 302.8 303.1 284.6 308.0 1.65 20 658 3536 -3.9 -15.9 39 12.0 -7.8 324 49 303.5 303.8 284.9 308.8 1.68 21 649 3644 -3.3 -18.3 30 15.0 -8.0 325 50 305.4 305.6 285.2 309.9 1.39 22 648 3657 -3.3 -18.3 30 15.0 -8.0 325 50 305.5 305.8 285.3 310.0 1.39 23 624 3954 -5.1 -16.1 42 11.0 -8.7 325 52 306.8 307.1 286.2 312.4 1.74 24 595 4326 -6.5 -20.5 32 14.0 -10.6 319 59 309.3 309.6 286.6 313.5 1.26 25 559 4810 -10.3 -23.3 34 13.0 -13.7 311 56 310.4 310.6 286.7 313.9 1.05 26 550 4935 -11.3 -23.3 36 12.0 -14.4 310 57 310.7 310.9 286.8 314.2 1.06 27 517 5407 -14.1 -18.6 69 4.5 -15.4 310 63 312.8 313.2 288.2 318.5 1.70 28 500 5660 -14.7 -19.7 66 5.0 -16.2 310 67 315.1 315.4 288.9 320.5 1.60 29 499 5675 -14.7 -19.7 66 5.0 -16.2 310 67 315.3 315.6 288.9 320.7 1.61 30 488 5844 -15.9 -20.1 70 4.2 -17.1 312 69 315.8 316.1 289.1 321.2 1.59 31 475 6048 -16.7 -22.7 60 6.0 -18.3 314 71 317.3 317.5 289.3 321.7 1.30 32 467 6175 -16.7 -25.7 46 9.0 -18.8 315 71 318.8 319.0 289.5 322.3 1.01 33 438 6654 -20.7 -26.7 59 6.0 -22.0 312 72 319.7 319.9 289.7 323.1 0.98 34 401 7302 -25.5 -33.5 47 8.0 -26.8 310 74 321.6 321.7 289.9 323.6 0.56 35 400 7320 -25.5 -32.5 52 7.0 -26.6 310 74 321.8 322.0 290.0 324.1 0.62 36 380 7689 -28.9 -33.9 62 5.0 -29.6 315 77 322.1 322.2 290.0 324.2 0.57 37 378 7726 -29.1 -36.1 51 7.0 -30.0 315 77 322.3 322.4 290.0 324.0 0.46 38 373 7821 -29.7 -36.7 51 7.0 -30.6 315 78 322.8 322.9 290.1 324.4 0.44 39 363 8014 -31.5 -36.5 61 5.0 -32.1 315 79 322.9 323.0 290.2 324.6 0.46 40 337 8534 -35.7 -41.7 54 6.0 -36.2 315 84 324.1 324.2 290.3 325.2 0.29 41 312 9064 -40.3 -44.5 64 4.2 -40.6 315 89 324.9 324.9 290.5 325.8 0.23 42 300 9330 -42.5 -47.1 61 4.6 -42.8 315 90 325.5 325.5 290.6 326.2 0.18 43 294 9466 -43.7 -48.6 58 4.9 -44.0 317 89 325.6 325.7 290.6 326.3 0.16 44 283 9720 -45.9 -52.9 45 7.0 -46.2 320 86 326.1 326.1 290.7 326.4 0.10 45 258 10327 -51.3 -56.2 56 4.9 -51.4 324 94 326.8 326.9 290.9 327.1 0.07 46 255 10402 -52.1 -58.1 48 6.0 -52.2 324 95 326.8 326.8 290.9 327.0 0.06 47 250 10530 -53.3 -58.2 55 4.9 -53.4 325 97 326.8 326.8 290.9 327.1 0.06 48 240 10793 -55.7 -59.4 63 3.7 -55.8 325 102 327.1 327.1 290.9 327.3 0.05 49 238 10846 -55.7 -60.5 55 4.8 -55.8 325 104 327.8 327.8 291.2 328.0 0.05 50 235 10927 -56.3 -60.0 63 3.7 -56.4 325 105 328.1 328.1 291.2 328.3 0.05 51 231 11036 -57.1 -61.8 55 4.7 -57.2 325 108 328.5 328.5 291.3 328.7 0.04 52 227 11147 -57.7 -61.3 63 3.6 -57.8 325 110 329.2 329.3 291.6 329.4 0.04 53 214 11519 -60.1 -66.1 45 6.0 -60.2 325 118 331.1 331.1 292.0 331.2 0.02 54 202 11878 -62.5 -67.4 52 4.9 -62.6 325 126 332.8 332.8 292.5 332.9 0.02 55 200 11940 -62.9 -67.9 51 5.0 -63.0 325 127 333.2 333.2 292.6 333.2 0.02 56 192 12190 -64.1 -70.1 44 6.0 -64.1 325 129 335.1 335.1 293.1 335.2 0.02 57 190 12254 -64.6 -69.0 54 4.4 -64.6 325 129 335.3 335.3 293.2 335.4 0.02 58 188 12319 -65.1 -67.9 68 2.8 -65.1 325 128 335.6 335.6 293.2 335.6 0.02 59 186 12384 -65.5 -69.3 59 3.8 -65.5 325 127 335.9 335.9 293.3 336.0 0.02 60 184 12450 -65.9 -70.9 50 5.0 -66.0 325 126 336.3 336.3 293.4 336.4 0.01 61 150 13690 -65.5 -79.5 13 14.0 -65.6 320 111 357.2 357.2 298.1 357.3 0.00 62 100 16140 -64.9 -86.9 3 22.0 -65.1 325 95 402.3 402.3 305.5 402.3 0.00 63 91 16714 -66.3 -87.3 4 21.0 -66.4 321 98 410.6 410.6 306.6 410.6 0.00 64 90 16781 -64.9 -86.9 3 22.0 -65.1 320 99 414.6 414.6 307.1 414.7 0.00 65 77 17725 -68.5 -88.5 4 20.0 -68.6 319 81 426.1 426.1 308.4 426.1 0.00 66 77 17725 -68.5 -88.5 4 20.0 -68.6 319 81 426.1 426.1 308.4 426.1 0.00 67 75 17883 -68.3 -88.3 4 20.0 -68.4 313 78 429.7 429.7 308.8 429.7 0.00 68 71 18214 -65.7 -87.7 3 22.0 -65.9 314 74 442.0 442.0 310.1 442.0 0.00 69 70 18300 -66.1 -88.1 3 22.0 -66.3 315 61 443.0 443.0 310.2 443.0 0.00 70 66 18656 -66.5 -88.5 3 22.0 -66.7 318 62 449.6 449.6 310.8 449.6 0.00 71 64 18842 -64.9 -88.9 2 24.0 -65.1 312 67 457.1 457.1 311.5 457.1 0.00 72 62 19035 -66.1 -89.1 3 23.0 -66.3 308 64 458.6 458.6 311.7 458.6 0.00 73 59 19337 -64.5 -88.5 2 24.0 -64.8 303 55 468.8 468.8 312.5 468.8 0.00 74 50 20340 -67.3 -89.3 3 22.0 -67.5 305 35 484.9 484.9 313.8 484.9 0.00 75 47 20713 -67.5 -89.5 3 22.0 -67.7 296 31 493.1 493.1 314.4 493.1 0.00 76 43 21244 -70.9 -90.9 4 20.0 -71.1 285 41 497.4 497.4 314.8 497.4 0.00 77 42 21385 -68.3 -90.3 3 22.0 -68.5 285 43 507.2 507.2 315.5 507.2 0.00 78 39 21834 -64.3 -89.3 2 25.0 -64.7 285 54 528.2 528.2 316.8 528.2 0.00 79 38 21992 -65.5 -89.5 2 24.0 -65.9 285 53 529.1 529.1 316.9 529.1 0.00 80 34 22672 -63.5 -89.5 2 26.0 -64.0 285 46 551.4 551.4 318.2 551.5 0.00 81 31 23237 -64.7 -89.7 2 25.0 -65.2 288 50 563.0 563.0 318.8 563.0 0.00 82 30 23440 -59.7 -88.7 1 29.0 -60.6 295 50 581.9 581.9 319.8 581.9 0.00 83 29 23652 -59.5 -88.5 1 29.0 -60.5 282 54 588.1 588.1 320.0 588.1 0.01 84 28 23870 -61.1 -88.1 2 27.0 -62.0 286 56 589.6 589.6 320.1 589.6 0.01 85 27 24096 -60.1 -88.1 1 28.0 -61.1 277 52 598.6 598.6 320.6 598.6 0.01 86 25 24572 -62.9 -89.9 1 27.0 -63.7 270 46 603.8 603.8 320.8 603.9 0.00 87 24 24825 -60.5 -89.5 1 29.0 -61.6 276 47 617.9 617.9 321.4 617.9 0.01 88 23 25089 -60.1 -88.1 1 28.0 -61.3 275 48 626.7 626.7 321.7 626.7 0.01 89 23 25089 -60.1 -88.1 1 28.0 -61.3 275 48 626.7 626.7 321.7 626.7 0.01 90 21 25654 -61.9 -88.9 2 27.0 -62.9 270 61 637.7 637.7 322.2 637.8 0.01 91 21 25654 -59.9 -88.9 1 29.0 -61.2 270 61 643.8 643.8 322.4 643.8 0.01 92 20 25960 -57.3 -87.3 1 30.0 -59.0 270 57 660.8 660.8 323.1 660.8 0.01 93 18 26626 -58.3 -87.3 1 29.0 -60.0 273 56 677.8 677.8 323.7 677.9 0.01 94 16 27370 -57.3 -87.3 1 30.0 -59.4 270 65 704.3 704.3 324.6 704.4 0.01 95 15 27782 -54.9 -85.9 1 31.0 -57.7 265 67 725.4 725.4 325.2 725.6 0.02 96 14 28223 -55.7 -85.7 1 30.0 -58.4 260 70 737.2 737.2 325.6 737.3 0.02 97 13 28699 -51.9 -84.9 1 33.0 -55.9 256 71 766.1 766.1 326.4 766.3 0.02 98 12 29218 -52.7 -84.7 1 32.0 -56.6 264 66 781.0 781.0 326.8 781.2 0.03 99 11 29777 -55.3 -85.3 1 30.0 -58.6 260 72 791.3 791.3 327.0 791.5 0.02 100 11 29777 -55.5 -85.5 1 30.0 -58.8 260 72 790.5 790.5 327.0 790.7 0.02 101 11 29777 -52.9 -84.9 1 32.0 -57.0 260 72 800.0 800.0 327.3 800.2 0.03 102 10 30390 -54.9 -85.9 1 31.0 -58.6 255 79 814.6 814.6 327.6 814.8 0.02 103 9.8 30519 -53.7 -85.7 1 32.0 -57.9 255 80 823.8 823.9 327.8 824.1 0.03 104 8.5 31425 -55.7 -86.7 1 31.0 -59.6 255 89 850.2 850.3 328.4 850.5 0.02 105 7.0 32670 -51.3 -85.3 1 34.0 -57.5 255 100 917.0 917.0 329.8 917.4 0.04 106 6.9 32764 -50.1 -84.1 1 34.0 -56.8 925.7 925.8 329.9 926.2 0.05 TRP 184 12450 -65.9 -70.9 50 5.0 -66.0 325 126 336.3 336.3 293.4 336.4 0.01 WND 190 12254 -64.6 -69.0 54 4.4 -64.6 325 129 335.3 335.3 293.2 335.4 0.02 Sounding variables and indices 1000-500 mb thick: 5516.00 m Freezing level: 719.00 mb = 2833.75 m = 9296.98 ft Wetbulb zero: 888.25 mb = 1119.61 m = 3673.20 ft Precipitable water: 0.50 inches Sfc-500 mean rel hum: 41.46 % Est. max temperature: 16.46 C = 61.62 F Sfc-Lift cond lev (LCL): 826.44 mb = 1705.80 m = 5596.38 ft T: 4.66 C 700-500 lapse rate: 4.90 C/km ThetaE index: 0.74 C Layer 1000.0- 935.0 mb Conv cond level (CCL): 557.45 mb = 4831.44 m = 15850.98 ft Mean mixing ratio: 3.09 g/kg Conv temperature: 37.94 C = 100.29 F Cap Strength: 16.58 C Lifted Index: 18.06 C Risk: None Lifted Index @300 mb: 21.87 C Lifted Index @700 mb: 10.71 C Showalter Index: 17.21 C Risk: None Total Totals Index: 22.00 C Risk: None Vertical Totals Index: 18.50 C Cross Totals Index: 3.50 C K Index: -3.70 Risk: None Sweat Index: 139.00 Risk: None Energy Index: 5.14 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 3.04 J/kg Max Up Vert Vel: 2.47 m/s Conv Inhibition (B-): 65632.77 J/kg Cap Strength: 18.04 C Lift Cond Lev (LCL): 790.10 mb = 2071.33 m = 6795.62 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 350 at 36 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 1007 98 335 9 3.8 -8.2 | 174 27 -2.6 27.0 1 1000 144 330 15 7.5 -13.0 | 183 22 1.1 22.2 2 981 305 330 26 13.0 -22.5 | 207 14 6.6 12.7 3 945 610 325 29 16.6 -23.8 | 222 15 10.2 11.4 4 925 790 335 28 11.8 -25.4 | 209 11 5.4 9.8 5 911 914 335 26 11.0 -23.6 | 201 12 4.6 11.6 6 877 1219 335 24 10.1 -21.8 | 195 14 3.7 13.4 7 850 1477 345 36 9.3 -34.8 | 262 3 2.9 0.4 8 814 1829 325 46 26.4 -37.7 | 277 20 20.0 -2.5 9 784 2134 320 47 30.2 -36.0 | 272 24 23.8 -0.8 10 755 2438 320 49 31.5 -37.5 | 275 25 25.1 -2.3 11 727 2743 315 51 36.1 -36.1 | 272 30 29.6 -0.9 12 700 3046 320 46 29.6 -35.2 | 270 23 23.2 -0.0 13 647 3658 325 50 28.7 -41.0 | 285 23 22.3 -5.8 14 622 3962 325 52 29.8 -42.6 | 288 25 23.4 -7.4 15 598 4267 320 59 37.9 -45.2 | 288 33 31.5 -10.0 16 553 4877 310 56 42.9 -36.0 | 271 36 36.5 -0.8 17 500 5660 310 67 51.3 -43.1 | 280 46 44.9 -7.9 18 472 6096 315 71 50.2 -50.2 | 289 46 43.8 -15.0 19 417 7010 310 73 55.9 -46.9 | 283 51 49.5 -11.7 20 400 7320 310 74 56.7 -47.6 | 284 52 50.3 -12.4 21 383 7620 315 76 53.7 -53.7 | 291 51 47.3 -18.5 22 308 9144 315 90 63.6 -63.6 | 296 64 57.2 -28.4 23 300 9330 315 90 63.6 -63.6 | 296 64 57.2 -28.4 24 281 9754 320 86 55.3 -65.9 | 302 58 48.9 -30.7 25 250 10530 325 97 55.6 -79.5 | 312 66 49.2 -44.3 26 200 11940 325 127 72.8 -104.0 | 316 96 66.4 -68.8 27 190 12254 325 129 74.0 -105.7 | 316 98 67.6 -70.5 28 184 12450 325 126 72.3 -103.2 | 316 95 65.9 -68.0 29 183 12497 325 129 74.0 -105.7 | 316 98 67.6 -70.5 30 165 13106 330 123 61.5 -106.5 | 322 90 55.1 -71.3 31 157 13411 325 102 58.5 -83.6 | 313 71 52.1 -48.4 32 150 13690 320 111 71.3 -85.0 | 308 82 64.9 -49.8 33 135 14326 325 113 64.8 -92.6 | 314 82 58.4 -57.4 34 122 14935 320 82 52.7 -62.8 | 301 54 46.3 -27.6 35 116 15240 310 90 68.9 -57.9 | 290 67 62.5 -22.7 36 105 15850 315 119 84.1 -84.1 | 302 92 77.7 -49.0 37 100 16140 325 95 54.5 -77.8 | 312 64 48.1 -42.6 38 95 16459 325 95 54.5 -77.8 | 312 64 48.1 -42.6 39 86 17069 315 103 72.8 -72.8 | 300 76 66.4 -37.6 40 82 17374 330 87 43.5 -75.3 | 317 55 37.1 -40.2 41 74 17983 310 76 58.2 -48.9 | 285 54 51.8 -13.7 42 70 18288 315 74 52.3 -52.3 | 290 49 45.9 -17.1 43 70 18300 315 61 43.1 -43.1 | 282 38 36.7 -7.9 44 67 18593 320 61 39.2 -46.7 | 289 35 32.8 -11.5 45 63 18898 310 68 52.1 -43.7 | 281 46 45.7 -8.5 46 57 19507 300 50 43.3 -25.0 | 255 38 36.9 10.2 47 50 20340 305 35 28.7 -20.1 | 236 27 22.3 15.1 48 49 20422 310 42 32.2 -27.0 | 252 27 25.8 8.2 49 47 20726 295 31 28.1 -13.1 | 224 31 21.7 22.1 50 45 21031 285 38 36.7 -9.8 | 230 40 30.3 25.4 51 42 21336 285 42 40.6 -10.9 | 235 42 34.2 24.3 52 38 21946 285 56 54.1 -14.5 | 247 52 47.7 20.7 53 36 22250 285 43 41.5 -11.1 | 236 43 35.1 24.1 54 31 23165 285 50 48.3 -12.9 | 242 47 41.9 22.3 55 30 23440 295 50 45.3 -21.1 | 250 41 38.9 14.1 56 30 23470 270 49 49.0 -0.0 | 230 55 42.6 35.2 57 28 23774 290 58 54.5 -19.8 | 252 50 48.1 15.4 58 26 24384 265 46 45.8 4.0 | 225 56 39.4 39.2 59 23 24994 280 47 46.3 -8.2 | 236 48 39.9 27.0 60 22 25298 265 51 50.8 4.4 | 228 60 44.4 39.6 61 21 25603 270 62 62.0 -0.0 | 238 66 55.6 35.2 62 20 25960 270 57 57.0 -0.0 | 235 62 50.6 35.2 63 19 26213 275 52 51.8 -4.5 | 236 55 45.4 30.7 64 16 27432 270 65 65.0 -0.0 | 239 68 58.6 35.2 65 13 28651 255 72 69.5 18.6 | 230 83 63.1 53.8 66 12 29261 265 66 65.7 5.8 | 235 72 59.3 40.9 67 10 30390 255 79 76.3 20.4 | 231 89 69.9 55.6 68 7 32670 255 100 96.6 25.9 | 236 109 90.2 61.1 Wind Parameters Mean winds (0-6000m): 319.7 at 47.7 knts Storm direction: 349.7 at 35.8 knts Shear (0-3000m) pos: 2.3 neg: 6.1 tot: 8.4 10-3/s Storm rel Dir Shear (0-3000m): 96.8 deg Storm rel helicity (0-3000m) pos: 94.5 neg: -47.2 tot: 47.3 m^2/s^2 ave: 15.8 10^-3 m/s^2 rel: 0.20 Storm rel vorticity (0-3000m) horiz: 12.9 stream: 2.6 10^-3/s Energy-Hel index: 0.00 Bulk Rich Number: 0.04 Bulk Shear: 80.81 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 ------------------------------------------------------------------------------- 500 328 24 201 16| 0.0 20.7 20.7| 71.2 0.0 71.2 142.4 0.71| 21.4 15.2 1000 331 25 204 14| 3.2 10.3 13.5| 71.2 -17.3 53.9 53.9 0.33| 14.8 4.9 1500 334 27 206 12| 4.5 6.9 11.3| 85.9 -18.8 67.0 44.7 0.38| 16.4 6.2 2000 331 31 229 12| 3.3 8.1 11.5| 86.0 -32.3 53.7 26.8 0.25| 16.3 4.0 2500 328 35 245 13| 2.7 7.3 10.0| 92.6 -37.2 55.4 22.2 0.24| 14.0 3.3 3000 326 37 253 15| 2.3 6.1 8.4| 94.5 -47.2 47.3 15.8 0.20| 12.9 2.6 4000 325 40 263 17| 2.3 5.3 7.6|135.9 -47.2 88.7 22.2 0.25| 11.1 2.8 5000 322 44 269 20| 1.8 5.2 7.0|152.9-137.3 15.6 3.1 0.13| 10.7 1.4 6000 320 48 273 24| 2.2 4.9 7.0|287.7-137.3 150.4 25.1 0.21| 10.2 2.1 Wrote GIF file: /home/apache/climate/data/raob//KIAD/skewt/KIAD.skewt.20251226.00.gif