UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025120112.upa.cvt Date: 1200Z 1 DEC 25 Searching for KIAD... Searching the city database file for: KIAD ... Date:1200Z 1 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 1018 98 2.2 -5.8 55 8.0 -0.7 310 7 273.9 274.4 271.5 280.7 2.43 1 1014 128 2.0 -7.0 51 9.0 -1.2 313 9 274.1 274.4 271.3 280.2 2.23 2 1000 236 1.2 -6.8 55 8.0 -1.6 325 16 274.4 274.7 271.5 280.7 2.29 3 925 856 -4.7 -8.5 75 3.8 -5.9 335 22 274.5 274.9 271.5 280.6 2.17 4 855 1469 -10.3 -10.3 100 0.0 -10.3 348 23 274.9 275.2 271.5 280.6 2.04 5 850 1514 -9.7 -11.7 85 2.0 -10.3 350 23 276.0 276.3 271.8 281.2 1.83 6 846 1550 -9.5 -12.9 76 3.4 -10.4 348 23 276.6 276.8 271.9 281.3 1.67 7 841 1596 -7.5 -15.5 53 8.0 -9.6 345 24 279.1 279.4 272.9 283.1 1.36 8 835 1652 -6.3 -17.3 41 11.0 -9.1 342 25 281.0 281.2 273.7 284.4 1.18 9 826 1737 -6.1 -22.1 27 16.0 -9.8 336 27 282.1 282.2 273.7 284.4 0.79 10 819 1803 -5.7 -22.7 25 17.0 -9.6 332 28 283.2 283.3 274.3 285.5 0.75 11 808 1909 -6.3 -22.3 27 16.0 -10.0 329 29 283.6 283.8 274.6 286.0 0.79 12 787 2114 -7.1 -25.1 22 18.0 -10.9 325 30 284.9 285.0 275.0 286.9 0.63 13 779 2194 -6.7 -27.7 17 21.0 -10.9 321 31 286.2 286.3 275.5 287.8 0.50 14 767 2315 -6.5 -34.5 9 28.0 -11.3 313 32 287.7 287.7 275.9 288.5 0.27 15 763 2356 -5.7 -43.7 3 38.0 -11.1 310 33 289.0 289.0 276.3 289.3 0.10 16 739 2607 -3.5 294 36 294.0 17 728 2725 -2.9 -49.9 1 47.0 -9.5 286 38 295.9 295.9 279.6 296.1 0.05 18 700 3035 -3.9 -50.9 1 47.0 -10.4 270 44 298.2 298.2 280.6 298.4 0.05 19 668 3403 -5.1 -53.1 1 48.0 -11.4 270 49 300.8 300.8 281.7 301.0 0.04 20 643 3701 -7.3 -54.3 1 47.0 -13.0 270 54 301.6 301.6 282.1 301.8 0.04 21 635 3799 -6.9 -46.9 2 40.0 -12.7 270 55 303.2 303.2 282.8 303.5 0.09 22 616 4035 -8.7 -39.7 6 31.0 -13.8 269 58 303.8 303.8 283.2 304.5 0.20 23 600 4238 -10.7 -28.7 21 18.0 -14.5 266 57 303.7 303.8 283.7 305.7 0.60 24 591 4354 -11.7 -22.7 40 11.0 -14.5 264 56 303.9 304.1 284.3 307.3 1.04 25 579 4511 -12.9 -25.9 33 13.0 -15.8 263 57 304.3 304.4 284.1 306.9 0.80 26 573 4590 -13.5 -31.5 20 18.0 -16.9 263 57 304.5 304.6 283.8 306.1 0.48 27 560 4764 -14.7 -39.7 10 25.0 -18.3 261 58 305.1 305.1 283.7 305.8 0.22 28 551 4887 -15.7 -34.7 18 19.0 -18.8 260 58 305.3 305.4 284.0 306.6 0.36 29 549 4914 -15.9 -28.9 32 13.0 -18.4 260 58 305.4 305.5 284.4 307.5 0.64 30 547 4942 -16.1 -28.1 35 12.0 -18.5 260 58 305.5 305.6 284.5 307.8 0.69 31 545 4969 -16.3 -29.3 32 13.0 -18.8 260 58 305.5 305.7 284.4 307.6 0.62 32 536 5094 -17.7 -27.7 41 10.0 -19.7 260 59 305.3 305.5 284.5 307.8 0.73 33 522 5291 -19.3 -27.3 49 8.0 -20.8 260 60 305.7 305.9 284.7 308.3 0.78 34 521 5306 -19.5 -28.5 45 9.0 -21.2 260 60 305.6 305.8 284.5 308.0 0.70 35 518 5349 -19.7 -30.7 37 11.0 -21.6 260 60 305.9 306.0 284.5 307.8 0.57 36 507 5507 -21.1 -30.1 44 9.0 -22.7 260 61 306.1 306.2 284.7 308.2 0.62 37 503 5566 -21.5 -32.5 36 11.0 -23.2 260 61 306.3 306.4 284.5 308.0 0.50 38 500 5610 -21.7 -31.7 40 10.0 -23.3 260 61 306.6 306.7 284.7 308.4 0.54 39 487 5803 -23.3 -29.3 58 6.0 -24.3 258 63 306.9 307.1 285.1 309.3 0.69 40 482 5878 -23.7 -31.7 48 8.0 -24.9 257 64 307.3 307.5 285.0 309.3 0.56 41 466 6123 -25.5 -30.3 64 4.8 -26.3 255 66 308.1 308.2 285.4 310.3 0.66 42 462 6185 -25.9 -30.9 63 5.0 -26.7 256 67 308.4 308.5 285.5 310.5 0.63 43 460 6216 -25.7 -32.7 52 7.0 -26.7 257 68 309.0 309.1 285.6 310.8 0.53 44 457 6264 -26.3 -32.3 57 6.0 -27.2 258 69 308.8 308.9 285.6 310.7 0.56 45 446 6439 -27.7 -36.7 42 9.0 -28.8 260 71 309.2 309.3 285.5 310.5 0.37 46 445 6455 -27.7 -42.7 23 15.0 -29.2 260 71 309.4 309.4 285.4 310.1 0.20 47 436 6601 -28.5 -49.5 11 21.0 -30.1 260 71 310.2 310.2 285.5 310.6 0.10 48 428 6733 -29.7 -48.7 14 19.0 -31.2 260 71 310.3 310.3 285.6 310.7 0.11 49 423 6816 -30.5 -54.5 8 24.0 -32.0 260 72 310.3 310.4 285.5 310.6 0.06 50 409 7054 -32.3 -54.3 9 22.0 -33.6 260 72 311.0 311.0 285.8 311.2 0.06 51 408 7071 -32.5 -46.5 24 14.0 -33.6 260 72 311.0 311.0 285.9 311.5 0.14 52 407 7088 -32.7 -37.6 62 4.9 -33.2 260 72 310.9 311.0 286.1 312.2 0.37 53 405 7123 -32.9 -40.9 45 8.0 -33.6 260 72 311.1 311.2 286.1 312.1 0.26 54 404 7140 -33.1 -37.9 62 4.8 -33.6 260 72 311.1 311.2 286.2 312.4 0.36 55 400 7210 -33.7 -37.4 69 3.7 -34.1 260 72 311.2 311.3 286.2 312.5 0.38 56 300 9180 -48.1 -56.1 39 8.0 -48.3 260 81 317.6 317.6 288.0 317.8 0.06 57 250 10350 -58.9 -63.9 52 5.0 -59.0 265 79 318.5 318.5 288.3 318.6 0.03 58 246 10451 -59.7 -64.7 52 5.0 -59.7 265 81 318.8 318.8 288.3 318.9 0.03 59 203 11647 -60.1 -74.4 14 14.3 -60.2 270 107 336.2 336.2 293.4 336.2 0.01 60 200 11740 -60.1 -75.1 12 15.0 -60.2 270 105 337.6 337.6 293.7 337.6 0.01 61 150 13530 -59.3 -83.3 3 24.0 -59.5 270 77 367.9 367.9 300.2 367.9 0.00 62 100 16060 -60.5 -85.5 2 25.0 -60.8 260 76 410.8 410.8 306.6 410.8 0.00 63 92 16575 -63.1 -86.1 3 23.0 -63.3 260 74 415.6 415.6 307.2 415.6 0.00 64 81 17362 -59.7 -86.7 2 27.0 -60.1 257 57 438.0 438.0 309.7 438.0 0.00 65 74 17926 -59.9 -86.9 2 27.0 -60.3 256 46 449.0 449.0 310.8 449.1 0.00 66 70 18270 -62.1 -87.1 2 25.0 -62.4 255 39 451.5 451.5 311.0 451.5 0.00 67 63 18916 -65.7 -88.7 3 23.0 -65.9 263 47 457.4 457.4 311.5 457.4 0.00 68 57 19527 -63.3 -88.3 2 25.0 -63.6 267 43 476.1 476.1 313.1 476.1 0.00 69 53 19973 -64.5 -89.5 2 25.0 -64.8 268 36 483.4 483.4 313.7 483.4 0.00 70 50 20330 -63.9 -88.9 2 25.0 -64.3 255 39 492.9 492.9 314.4 492.9 0.00 71 48 20581 -63.7 -88.7 2 25.0 -64.1 257 36 499.2 499.2 314.9 499.2 0.00 72 44 21121 -58.5 -87.5 1 29.0 -59.3 275 36 524.4 524.5 316.6 524.5 0.00 73 38 22037 -61.7 -88.7 2 27.0 -62.3 283 24 538.8 538.8 317.5 538.8 0.00 74 37 22203 -60.1 -88.1 1 28.0 -60.9 285 26 547.0 547.0 317.9 547.0 0.00 75 35 22549 -61.1 -88.1 2 27.0 -61.8 287 31 553.1 553.1 318.3 553.2 0.00 76 34 22730 -59.7 -87.7 1 28.0 -60.6 289 33 561.4 561.4 318.7 561.5 0.01 77 30 23510 -61.1 -88.1 2 27.0 -61.9 310 11 578.1 578.1 319.6 578.1 0.01 78 28 23941 -57.5 -87.5 1 30.0 -58.8 299 13 599.6 599.6 320.6 599.6 0.01 79 26 24406 -59.5 -87.5 1 28.0 -60.6 306 24 606.8 606.8 320.9 606.8 0.01 80 23 25174 -58.1 -87.1 1 29.0 -59.5 356 15 632.5 632.5 322.0 632.6 0.01 81 20 26050 -59.5 -87.5 1 28.0 -60.9 5 22 654.0 654.0 322.9 654.1 0.01 82 17 27072 -57.5 -86.5 1 29.0 -59.5 15 18 691.6 691.6 324.1 691.7 0.01 83 13 28761 -59.3 -87.3 1 28.0 -61.3 7 27 740.5 740.5 325.7 740.6 0.01 84 11 29812 -57.3 -86.3 1 29.0 -60.1 8 27 784.0 784.0 326.8 784.2 0.02 85 11 29812 -57.3 -86.3 1 29.0 -60.1 8 27 784.0 784.0 326.8 784.2 0.02 86 10 30410 -60.9 -87.9 2 27.0 -63.0 360 32 792.2 792.2 327.1 792.4 0.02 87 9.1 30997 -59.7 -87.7 1 28.0 -62.3 360 34 818.5 818.5 327.7 818.7 0.02 88 8.6 31348 -61.9 -88.9 2 27.0 -64.0 360 36 823.2 823.3 327.8 823.4 0.02 89 8.4 31494 -60.5 -88.5 1 28.0 -63.0 360 36 834.3 834.3 328.1 834.5 0.02 90 8.2 31644 -60.9 -87.9 2 27.0 -63.3 360 37 838.5 838.5 328.1 838.7 0.02 91 7.5 32199 -60.5 -88.5 1 28.0 -63.2 360 39 861.8 861.8 328.7 862.0 0.02 92 7.0 32630 -58.9 -87.9 1 29.0 -62.2 360 41 885.6 885.6 329.1 885.8 0.02 93 6.7 32906 -57.3 -86.3 1 29.0 -61.3 903.4 903.4 329.5 903.8 0.03 TRP 246 10451 -59.7 -64.7 52 5.0 -59.7 265 81 318.8 318.8 288.3 318.9 0.03 WND 203 11647 -60.1 -74.4 14 14.3 -60.2 270 107 336.2 336.2 293.4 336.2 0.01 Sounding variables and indices 1000-500 mb thick: 5374.00 m Freezing level: 984.75 mb = 362.10 m = 1187.98 ft Wetbulb zero: Below ground Precipitable water: 0.23 inches Sfc-500 mean rel hum: 34.85 % Est. max temperature: 3.08 C = 37.55 F Sfc-Lift cond lev (LCL): 898.76 mb = 1080.09 m = 3543.57 ft T: -6.75 C 700-500 lapse rate: 6.91 C/km ThetaE index: 0.43 C Layer 1014.0-1000.0 mb Conv cond level (CCL): 871.82 mb = 1317.09 m = 4321.12 ft Mean mixing ratio: 2.23 g/kg Conv temperature: 3.07 C = 37.52 F Cap Strength: 21.68 C Lifted Index: 21.76 C Risk: None Lifted Index @300 mb: 26.24 C Lifted Index @700 mb: 18.32 C Showalter Index: 21.29 C Risk: None Total Totals Index: 22.00 C Risk: None Vertical Totals Index: 12.00 C Cross Totals Index: 10.00 C K Index: -46.70 Risk: None Sweat Index: 107.00 Risk: None Energy Index: 5.90 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 1.12 J/kg Max Up Vert Vel: 1.50 m/s Conv Inhibition (B-): 79459.00 J/kg Cap Strength: 21.64 C Lift Cond Lev (LCL): 877.27 mb = 1268.51 m = 4161.71 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 308 at 32 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 1018 98 310 7 5.4 -4.5 | 128 25 -19.6 15.3 1 1000 236 325 16 9.2 -13.1 | 113 17 -15.8 6.7 2 991 305 325 17 9.8 -13.9 | 111 16 -15.2 5.8 3 954 610 335 21 8.9 -19.0 | 93 16 -16.1 0.7 4 925 856 335 22 9.3 -19.9 | 89 16 -15.7 -0.2 5 918 914 335 23 9.7 -20.8 | 86 15 -15.2 -1.1 6 883 1219 340 24 8.2 -22.6 | 81 17 -16.8 -2.8 7 850 1514 350 23 4.0 -22.7 | 82 21 -21.0 -2.9 8 849 1524 350 23 4.0 -22.7 | 82 21 -21.0 -2.9 9 817 1829 330 28 14.0 -24.2 | 68 12 -11.0 -4.5 10 785 2134 325 30 17.2 -24.6 | 58 9 -7.8 -4.8 11 755 2438 305 34 27.9 -19.5 | 265 3 2.9 0.3 12 727 2743 285 38 36.7 -9.8 | 230 15 11.7 9.9 13 700 3035 270 44 44.0 -0.0 | 224 27 19.0 19.8 14 645 3658 270 53 53.0 -0.0 | 235 34 28.0 19.8 15 620 3962 270 59 59.0 -0.0 | 240 39 34.0 19.8 16 596 4267 265 56 55.8 4.9 | 231 39 30.8 24.6 17 550 4877 260 58 57.1 10.1 | 227 44 32.2 29.8 18 500 5610 260 61 60.1 10.6 | 229 46 35.1 30.4 19 467 6096 255 66 63.8 17.1 | 226 53 38.8 36.8 20 448 6401 260 71 69.9 12.3 | 234 55 45.0 32.1 21 400 7210 260 72 70.9 12.5 | 235 56 45.9 32.3 22 377 7620 265 70 69.7 6.1 | 240 52 44.8 25.9 23 360 7925 260 68 67.0 11.8 | 233 53 42.0 31.6 24 302 9144 260 80 78.8 13.9 | 238 63 53.8 33.7 25 300 9180 260 81 79.8 14.1 | 238 64 54.8 33.8 26 250 10350 265 79 78.7 6.9 | 244 60 53.7 26.6 27 246 10451 265 81 80.7 7.1 | 244 62 55.7 26.8 28 238 10668 265 79 78.7 6.9 | 244 60 53.7 26.6 29 203 11647 270 107 107.0 -0.0 | 256 84 82.0 19.8 30 200 11740 270 105 105.0 -0.0 | 256 82 80.0 19.8 31 195 11887 270 107 107.0 -0.0 | 256 84 82.0 19.8 32 177 12497 280 99 97.5 -17.2 | 268 73 72.5 2.6 33 169 12802 270 82 82.0 -0.0 | 251 60 57.0 19.8 34 161 13106 270 100 100.0 -0.0 | 255 78 75.0 19.8 35 150 13530 270 77 77.0 -0.0 | 249 56 52.0 19.8 36 139 14021 260 70 68.9 12.2 | 234 54 44.0 31.9 37 132 14326 250 78 73.3 26.7 | 226 67 48.3 46.4 38 126 14630 260 89 87.6 15.5 | 241 72 62.7 35.2 39 120 14935 270 82 82.0 -0.0 | 251 60 57.0 19.8 40 114 15240 265 73 72.7 6.4 | 241 54 47.8 26.1 41 103 15850 265 70 69.7 6.1 | 240 52 44.8 25.9 42 100 16060 260 76 74.8 13.2 | 237 60 49.9 33.0 43 94 16459 260 76 74.8 13.2 | 237 60 49.9 33.0 44 70 18270 255 39 37.7 10.1 | 203 32 12.7 29.9 45 70 18288 270 39 39.0 -0.0 | 215 24 14.0 19.8 46 66 18593 255 39 37.7 10.1 | 203 32 12.7 29.9 47 60 19202 270 55 55.0 -0.0 | 237 36 30.0 19.8 48 54 19812 265 33 32.9 2.9 | 199 24 7.9 22.6 49 52 20117 270 38 38.0 -0.0 | 213 24 13.0 19.8 50 50 20330 255 39 37.7 10.1 | 203 32 12.7 29.9 51 49 20422 250 35 32.9 12.0 | 194 33 7.9 31.7 52 45 21031 275 40 39.8 -3.5 | 222 22 14.9 16.3 53 43 21336 275 27 26.9 -2.4 | 186 18 1.9 17.4 54 41 21641 280 18 17.7 -3.1 | 156 18 -7.2 16.6 55 33 22860 290 35 32.9 -12.0 | 225 11 7.9 7.8 56 32 23165 295 26 23.6 -11.0 | 171 9 -1.4 8.8 57 30 23470 285 15 14.5 -3.9 | 147 19 -10.5 15.9 58 30 23510 310 11 8.4 -7.1 | 127 21 -16.5 12.7 59 29 23774 310 14 10.7 -9.0 | 127 18 -14.2 10.8 60 27 24079 290 12 11.3 -4.1 | 139 21 -13.7 15.7 61 26 24384 305 24 19.7 -13.8 | 138 8 -5.3 6.0 62 25 24689 320 19 12.2 -14.6 | 112 14 -12.8 5.2 63 23 25298 5 14 -1.2 -13.9 | 103 27 -26.2 5.8 64 20 25908 355 21 1.8 -20.9 | 87 23 -23.1 -1.2 65 20 26050 5 22 -1.9 -21.9 | 85 27 -26.9 -2.2 66 18 26822 25 19 -8.0 -17.2 | 94 33 -33.0 2.5 67 16 27432 360 16 -0.0 -16.0 | 99 25 -25.0 3.8 68 15 27737 340 9 3.1 -8.5 | 117 25 -21.9 11.3 69 14 28346 10 15 -2.6 -14.8 | 100 28 -27.6 5.0 70 13 28651 5 28 -2.4 -27.9 | 73 29 -27.4 -8.1 71 12 29261 15 22 -5.7 -21.3 | 87 31 -30.7 -1.5 72 10 30410 360 32 -0.0 -32.0 | 64 28 -25.0 -12.2 73 7 32630 360 41 -0.0 -41.0 | 50 33 -25.0 -21.2 Wind Parameters Mean winds (0-6000m): 278.4 at 42.5 knts Storm direction: 308.4 at 31.8 knts Shear (0-3000m) pos: 3.2 neg: 7.8 tot: 11.0 10-3/s Storm rel Dir Shear (0-3000m): 97.4 deg Storm rel helicity (0-3000m) pos: 3.5 neg: -113.5 tot: -110.0 m^2/s^2 ave: -36.7 10^-3 m/s^2 rel: -0.45 Storm rel vorticity (0-3000m) horiz: 13.0 stream: -5.8 10^-3/s Energy-Hel index: 0.00 Bulk Rich Number: 0.01 Bulk Shear: 153.58 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 17 110 17| 15.2 0.0 15.2| 0.0 -51.0 -51.0 -102.1 -0.70| 15.9-11.1 1000 332 19 99 16| 9.1 0.0 9.1| 0.0 -63.4 -63.4 -63.4 -0.73| 9.7 -7.1 1500 337 21 92 17| 6.5 0.0 6.5| 2.2 -71.1 -69.0 -46.0 -0.57| 8.9 -5.1 2000 335 22 88 16| 4.9 2.7 7.6| 2.2 -87.9 -85.7 -42.9 -0.53| 9.4 -5.0 2500 329 25 84 12| 3.9 5.7 9.6| 2.2 -97.0 -94.8 -37.9 -0.54| 11.6 -6.2 3000 317 27 90 6| 3.2 7.8 11.0| 3.5-113.5-110.0 -36.7 -0.45| 13.0 -5.8 4000 297 34 228 7| 2.4 7.4 9.8| 70.5-134.0 -63.5 -15.9 -0.31| 11.8 -3.6 5000 286 38 232 15| 1.9 6.4 8.3| 75.7-200.9-125.2 -25.0 -0.34| 10.4 -3.5 6000 278 42 231 22| 1.6 6.0 7.7| 88.5-230.9-142.4 -23.7 -0.32| 9.5 -3.0 Wrote GIF file: /home/apache/climate/data/raob//KIAD/skewt/KIAD.skewt.20251201.12.gif