UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025042000.upa.cvt Date: 0000Z 20 APR 25 Searching for KIAD... Searching the city database file for: KIAD ... Date:0000Z 20 APR 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 1006 98 26.0 15.0 51 11.0 18.8 200 7 298.6 300.6 291.7 329.9 10.71 1 1005 105 27.0 15.0 48 12.0 19.1 201 7 299.7 301.7 292.0 331.1 10.72 2 1000 143 26.8 14.8 48 12.0 18.9 205 8 300.0 301.9 292.0 331.1 10.64 3 925 826 21.8 12.8 57 9.0 16.0 225 36 301.6 303.5 292.1 331.4 10.09 4 920 873 21.4 12.4 56 9.0 15.6 228 35 301.7 303.5 291.9 330.9 9.88 5 897 1093 22.0 8.0 41 14.0 13.5 247 32 304.5 305.9 290.9 327.1 7.52 6 875 1308 21.4 5.4 35 16.0 12.0 264 32 306.0 307.2 290.5 325.6 6.43 7 865 1407 20.6 4.6 35 16.0 11.4 268 32 306.2 307.3 290.2 324.9 6.15 8 850 1558 19.2 4.2 37 15.0 10.6 275 33 306.3 307.4 290.2 324.8 6.09 9 780 2288 12.4 2.4 50 10.0 6.9 278 33 306.6 307.7 290.1 324.4 5.84 10 769 2406 11.4 2.4 54 9.0 6.5 276 34 306.7 307.9 290.2 324.9 5.92 11 733 2805 8.8 -4.2 40 13.0 2.5 276 44 308.1 308.9 288.8 320.1 3.82 12 706 3115 6.6 -9.4 31 16.0 -0.3 279 54 309.0 309.5 287.9 317.5 2.65 13 700 3185 6.4 -13.6 22 20.0 -1.4 280 56 309.6 309.9 287.3 315.8 1.91 14 676 3470 5.2 -20.8 13 26.0 -3.4 273 59 311.3 311.5 287.1 314.9 1.08 15 667 3579 4.6 -19.4 16 24.0 -3.6 271 59 311.9 312.1 287.4 316.0 1.23 16 664 3615 4.4 -12.6 28 17.0 -2.4 271 60 312.0 312.4 288.5 319.1 2.18 17 645 3850 2.4 -11.6 35 14.0 -3.3 270 61 312.4 312.8 288.8 320.3 2.44 18 634 3989 1.6 -17.4 23 19.0 -5.1 270 61 313.0 313.3 288.1 318.1 1.54 19 598 4456 -2.1 -20.1 24 18.0 -7.9 267 64 314.0 314.2 288.2 318.3 1.29 20 590 4562 -2.9 -15.9 36 13.0 -7.5 266 66 314.3 314.6 288.9 320.5 1.87 21 571 4820 -4.9 -14.9 45 10.0 -8.5 265 64 314.9 315.3 289.3 321.8 2.11 22 560 4973 -6.3 -14.3 53 8.0 -9.2 264 63 315.0 315.4 289.5 322.4 2.26 23 553 5071 -6.7 -12.7 62 6.0 -9.0 262 62 315.6 316.1 290.0 324.2 2.60 24 550 5113 -6.7 -15.7 49 9.0 -9.9 262 62 316.1 316.5 289.6 322.9 2.05 25 548 5142 -7.1 -16.1 49 9.0 -10.2 261 62 316.0 316.4 289.5 322.6 1.99 26 539 5270 -7.5 -20.5 35 13.0 -11.5 259 62 317.0 317.3 289.3 321.7 1.39 27 538 5285 -7.5 -21.5 32 14.0 -11.7 259 62 317.2 317.4 289.2 321.5 1.27 28 524 5489 -9.3 -22.3 34 13.0 -13.0 256 61 317.4 317.7 289.2 321.6 1.22 29 522 5519 -9.3 -19.3 44 10.0 -12.4 255 61 317.8 318.1 289.7 323.1 1.59 30 507 5743 -10.5 -17.5 56 7.0 -12.8 252 60 319.0 319.3 290.4 325.4 1.91 31 500 5850 -11.5 -17.5 61 6.0 -13.5 250 60 319.0 319.4 290.4 325.5 1.93 32 475 6242 -14.7 -18.5 73 3.8 -15.9 253 60 319.8 320.1 290.6 326.1 1.87 33 466 6388 -15.5 -20.1 68 4.6 -16.9 256 59 320.5 320.9 290.6 326.2 1.66 34 445 6735 -17.9 -21.5 73 3.6 -18.9 264 56 321.8 322.1 290.9 327.0 1.54 35 439 6837 -18.1 -23.1 65 5.0 -19.4 266 55 322.8 323.0 291.0 327.5 1.36 36 437 6871 -17.9 -26.9 45 9.0 -20.0 267 55 323.4 323.6 290.8 326.8 0.97 37 435 6906 -17.9 -27.9 41 10.0 -20.2 268 55 323.9 324.0 290.9 327.0 0.89 38 433 6940 -17.9 -28.9 38 11.0 -20.3 268 55 324.3 324.4 290.9 327.2 0.81 39 409 7366 -21.3 -28.3 53 7.0 -22.8 270 49 325.2 325.4 291.3 328.5 0.91 40 407 7402 -21.5 -29.5 48 8.0 -23.1 270 49 325.4 325.6 291.2 328.3 0.82 41 405 7438 -21.7 -27.7 58 6.0 -23.0 270 48 325.6 325.8 291.5 329.1 0.97 42 400 7530 -22.1 -29.1 53 7.0 -23.5 270 47 326.3 326.4 291.5 329.4 0.86 43 396 7604 -22.5 -30.5 48 8.0 -24.1 270 47 326.7 326.8 291.6 329.4 0.76 44 385 7809 -24.5 -31.5 52 7.0 -25.8 269 48 326.7 326.8 291.5 329.3 0.71 45 383 7847 -24.7 -32.7 47 8.0 -26.1 269 48 326.9 327.0 291.5 329.2 0.64 46 379 7923 -25.3 -31.3 57 6.0 -26.4 269 48 327.1 327.3 291.6 329.8 0.74 47 376 7981 -25.7 -33.7 47 8.0 -27.1 269 48 327.3 327.4 291.6 329.5 0.59 48 370 8097 -26.9 -32.9 57 6.0 -27.9 268 49 327.2 327.4 291.6 329.6 0.65 49 359 8314 -28.7 -31.4 77 2.7 -29.2 268 50 327.7 327.8 291.9 330.5 0.77 50 355 8394 -29.5 -35.5 56 6.0 -30.4 268 50 327.6 327.7 291.6 329.6 0.52 51 346 8576 -31.1 -34.9 69 3.8 -31.6 267 51 327.9 328.0 291.7 330.0 0.57 52 344 8617 -31.3 -34.1 76 2.8 -31.7 267 51 328.2 328.3 291.8 330.4 0.62 53 340 8700 -32.1 -38.1 55 6.0 -32.9 267 51 328.2 328.3 291.6 329.7 0.42 54 339 8721 -32.1 -41.1 40 9.0 -33.1 266 51 328.5 328.5 291.6 329.6 0.31 55 337 8762 -32.5 -42.5 36 10.0 -33.6 266 51 328.5 328.5 291.6 329.5 0.27 56 300 9570 -38.9 -45.9 48 7.0 -39.4 270 57 330.5 330.6 292.1 331.3 0.21 57 250 10790 -49.3 -55.3 49 6.0 -49.5 270 54 332.8 332.8 292.6 333.1 0.08 58 200 12210 -61.7 -65.4 61 3.7 -61.7 260 59 335.1 335.1 293.1 335.2 0.03 59 186 12657 -64.4 -68.3 59 3.9 -64.5 270 66 337.7 337.7 293.7 337.7 0.02 60 160 13565 -70.1 -74.3 54 4.2 -70.1 260 30 342.9 342.9 295.0 343.0 0.01 61 150 13950 -69.3 -78.3 26 9.0 -69.4 270 34 350.7 350.7 296.8 350.7 0.01 62 100 16440 -63.5 -87.5 2 24.0 -63.7 275 58 405.0 405.0 305.9 405.0 0.00 63 90 17081 -67.5 -88.5 4 21.0 -67.6 285 42 409.5 409.5 306.5 409.5 0.00 64 85 17426 -66.7 -89.7 3 23.0 -66.8 282 40 417.8 417.8 307.4 417.8 0.00 65 81 17720 -63.7 -88.7 2 25.0 -63.9 281 36 429.8 429.8 308.8 429.8 0.00 66 72 18439 -66.1 -90.1 2 24.0 -66.3 243 20 439.4 439.4 309.8 439.4 0.00 67 70 18610 -64.9 -88.9 2 24.0 -65.1 245 13 445.5 445.5 310.4 445.5 0.00 68 68 18788 -64.1 -89.1 2 25.0 -64.4 245 15 451.0 451.0 311.0 451.0 0.00 69 65 19063 -65.5 -89.5 2 24.0 -65.7 215 13 453.8 453.8 311.2 453.8 0.00 70 64 19158 -62.9 -88.9 2 26.0 -63.2 197 11 461.5 461.5 311.9 461.5 0.00 71 56 19978 -64.9 -89.9 2 25.0 -65.2 229 19 474.9 474.9 313.0 474.9 0.00 72 52 20436 -60.7 -88.7 1 28.0 -61.2 247 16 494.9 494.9 314.6 494.9 0.00 73 50 20680 -60.9 -88.9 1 28.0 -61.4 275 10 500.0 500.0 314.9 500.0 0.00 74 48 20935 -59.1 -88.1 1 29.0 -59.7 275 13 510.1 510.1 315.7 510.1 0.00 75 47 21067 -59.1 -88.1 1 29.0 -59.8 302 9 513.2 513.2 315.8 513.2 0.00 76 39 22229 -61.7 -88.7 2 27.0 -62.3 229 10 534.8 534.8 317.2 534.8 0.00 77 37 22557 -58.7 -87.7 1 29.0 -59.6 206 10 550.6 550.6 318.1 550.6 0.00 78 36 22729 -59.5 -88.5 1 29.0 -60.3 193 9 552.8 552.8 318.2 552.9 0.00 79 34 23087 -59.1 -88.1 1 29.0 -60.0 165 9 563.0 563.0 318.8 563.0 0.00 80 32 23470 -55.3 -86.3 1 31.0 -56.8 136 8 583.0 583.0 319.8 583.1 0.01 81 30 23880 -56.9 -86.9 1 30.0 -58.2 105 8 589.5 589.5 320.1 589.6 0.01 82 29 24095 -57.3 -87.3 1 30.0 -58.6 69 10 594.2 594.2 320.3 594.2 0.01 83 27 24549 -55.1 -87.1 1 32.0 -56.8 130 8 612.6 612.6 321.2 612.7 0.01 84 27 24549 -55.3 -87.3 1 32.0 -57.0 130 8 612.1 612.1 321.2 612.1 0.01 85 25 25040 -55.1 -86.1 1 31.0 -56.9 132 10 626.2 626.2 321.7 626.3 0.01 86 22 25862 -52.3 -85.3 1 33.0 -54.9 134 12 657.9 657.9 323.0 658.0 0.01 87 21 26163 -52.5 -85.5 1 33.0 -55.2 135 13 666.1 666.1 323.3 666.2 0.01 88 20 26480 -50.5 -84.5 1 34.0 -53.8 205 11 681.6 681.6 323.8 681.7 0.02 89 19 26815 -50.1 -84.1 1 34.0 -53.7 209 10 692.9 692.9 324.2 693.0 0.02 90 17 27539 -51.3 -85.3 1 34.0 -54.8 267 8 711.5 711.5 324.8 711.6 0.02 91 16 27933 -51.1 -85.1 1 34.0 -54.8 255 6 724.6 724.6 325.2 724.7 0.02 92 14 28810 -46.9 -83.9 1 37.0 -52.5 250 8 767.0 767.0 326.4 767.2 0.02 93 13 29302 -45.7 -82.7 1 37.0 -52.1 306 13 787.6 787.6 327.0 787.9 0.03 94 12 29834 -46.7 -83.7 1 37.0 -52.9 12 15 802.3 802.3 327.3 802.5 0.03 95 10 31050 -44.1 -83.1 1 39.0 -52.2 240 7 854.9 855.0 328.5 855.3 0.04 96 9.9 31118 -43.5 -82.5 1 39.0 -52.0 241 7 859.6 859.7 328.6 860.1 0.04 97 9.2 31612 -43.1 -82.1 1 39.0 -52.1 252 7 879.4 879.4 329.0 879.9 0.05 98 8.1 32482 -37.1 -79.1 0 42.0 -50.1 270 7 935.8 935.8 330.1 936.8 0.10 99 7.5 33013 -38.5 -80.5 0 42.0 -51.1 280 7 950.9 951.0 330.4 951.8 0.08 100 7.0 33490 -36.5 -79.5 0 43.0 -50.7 290 7 978.2 978.2 330.8 979.3 0.10 101 5.7 34926 -32.7 -76.7 0 44.0 -50.5 1054.0 1054.1 332.0 1056.5 0.20 102 5.5 35177 -32.7 -76.7 0 44.0 -50.7 1064.8 1065.0 332.2 1067.4 0.20 103 5.3 35439 -30.9 -75.9 0 45.0 -50.3 1084.2 1084.4 332.5 1087.4 0.24 TRP 160 13565 -70.1 -74.3 54 4.2 -70.1 260 30 342.9 342.9 295.0 343.0 0.01 WND 186 12657 -64.4 -68.3 59 3.9 -64.5 270 66 337.7 337.7 293.7 337.7 0.02 Sounding variables and indices 1000-500 mb thick: 5707.00 m Freezing level: 618.43 mb = 4190.75 m = 13749.01 ft Wetbulb zero: 708.62 mb = 3084.32 m = 10119.03 ft Precipitable water: 1.08 inches Sfc-500 mean rel hum: 39.71 % Est. max temperature: 33.61 C = 92.49 F Sfc-Lift cond lev (LCL): 856.36 mb = 1493.74 m = 4900.67 ft T: 19.80 C 700-500 lapse rate: 6.72 C/km ThetaE index: 9.92 C Layer 733.0- 667.0 mb Conv cond level (CCL): 744.81 mb = 2672.33 m = 8767.39 ft Mean mixing ratio: 10.18 g/kg Conv temperature: 35.06 C = 95.11 F Cap Strength: 5.11 C Lifted Index: -0.74 C Risk: Thunderstorms probable Lifted Index @300 mb: 0.75 C Lifted Index @700 mb: 1.69 C Showalter Index: 2.31 C Risk: Showers probable Total Totals Index: 46.40 C Risk: Scattered moderate thunderstorms Vertical Totals Index: 30.70 C Cross Totals Index: 15.70 C K Index: 14.90 Risk: None Sweat Index: 176.40 Risk: None Energy Index: 0.16 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 77.70 J/kg Max Up Vert Vel: 12.47 m/s Conv Inhibition (B-): 328.03 J/kg Cap Strength: 5.11 C Lift Cond Lev (LCL): 818.44 mb = 1879.17 m = 6165.20 ft Lev Free Conv (LFC): 583.44 mb = 4650.48 m = 15257.31 ft Equ Level (EL): 423.44 mb = 7106.88 m = 23316.25 ft B at Equ Level: 76.36 J/kg Max Parcel Lev (MPL): 253.44 mb = 10698.55 m = 35099.79 ft Wind level data Storm motion: 294 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 1006 98 200 7 2.4 6.6 | 125 37 -30.3 20.8 1 1000 143 205 8 3.4 7.3 | 126 36 -29.3 21.5 2 982 305 200 17 5.8 16.0 | 138 40 -26.8 30.2 3 948 610 215 31 17.8 25.4 | 159 42 -14.9 39.6 4 925 826 225 36 25.5 25.5 | 170 40 -7.2 39.7 5 916 914 230 34 26.0 21.9 | 170 37 -6.6 36.1 6 884 1219 260 31 30.5 5.4 | 174 20 -2.1 19.6 7 850 1558 275 33 32.9 -2.9 | 181 11 0.2 11.4 8 823 1829 280 33 32.5 -5.7 | 179 9 -0.2 8.5 9 794 2134 280 32 31.5 -5.6 | 172 9 -1.1 8.7 10 765 2438 275 34 33.9 -3.0 | 186 11 1.2 11.3 11 738 2743 275 42 41.8 -3.7 | 221 14 9.2 10.6 12 700 3185 280 56 55.1 -9.7 | 259 23 22.5 4.5 13 685 3353 275 58 57.8 -5.1 | 250 27 25.1 9.2 14 659 3658 270 60 60.0 -0.0 | 243 31 27.3 14.2 15 611 4267 270 62 62.0 -0.0 | 244 33 29.3 14.2 16 588 4572 265 66 65.7 5.8 | 239 39 33.1 20.0 17 565 4877 265 63 62.8 5.5 | 237 36 30.1 19.7 18 500 5850 250 60 56.4 20.5 | 214 42 23.7 34.8 19 484 6096 250 61 57.3 20.9 | 215 43 24.7 35.1 20 429 7010 270 54 54.0 -0.0 | 236 26 21.3 14.2 21 400 7530 270 47 47.0 -0.0 | 225 20 14.3 14.2 22 395 7620 270 47 47.0 -0.0 | 225 20 14.3 14.2 23 319 9144 265 53 52.8 4.6 | 227 28 20.1 18.8 24 300 9570 270 57 57.0 -0.0 | 240 28 24.3 14.2 25 292 9754 270 59 59.0 -0.0 | 242 30 26.3 14.2 26 250 10790 270 54 54.0 -0.0 | 236 26 21.3 14.2 27 210 11887 270 49 49.0 -0.0 | 229 22 16.3 14.2 28 200 12210 260 59 58.1 10.2 | 226 35 25.4 24.5 29 186 12657 270 66 66.0 -0.0 | 247 36 33.3 14.2 30 182 12802 270 66 66.0 -0.0 | 247 36 33.3 14.2 31 160 13565 260 30 29.5 5.2 | 171 20 -3.1 19.4 32 156 13716 260 32 31.5 5.6 | 177 20 -1.1 19.8 33 150 13950 270 34 34.0 -0.0 | 185 14 1.3 14.2 34 148 14021 265 29 28.9 2.5 | 167 17 -3.8 16.8 35 141 14326 280 39 38.4 -6.8 | 218 9 5.7 7.5 36 122 15240 280 49 48.3 -8.5 | 250 17 15.6 5.7 37 110 15850 270 38 38.0 -0.0 | 201 15 5.3 14.2 38 100 16440 275 58 57.8 -5.1 | 250 27 25.1 9.2 39 95 16764 275 58 57.8 -5.1 | 250 27 25.1 9.2 40 90 17069 285 42 40.6 -10.9 | 247 9 7.9 3.4 41 82 17678 280 38 37.4 -6.6 | 212 9 4.8 7.6 42 78 17983 290 21 19.7 -7.2 | 119 15 -12.9 7.0 43 74 18288 250 13 12.2 4.4 | 132 28 -20.4 18.7 44 70 18593 235 27 22.1 15.5 | 160 32 -10.5 29.7 45 70 18610 245 13 11.8 5.5 | 133 29 -20.9 19.7 46 67 18898 245 16 14.5 6.8 | 139 28 -18.2 21.0 47 64 19202 190 10 1.7 9.8 | 128 39 -30.9 24.1 48 61 19507 230 20 15.3 12.9 | 147 32 -17.3 27.1 49 58 19812 240 18 15.6 9.0 | 144 29 -17.1 23.2 50 55 20117 220 20 12.9 15.3 | 146 36 -19.8 29.6 51 52 20422 245 16 14.5 6.8 | 139 28 -18.2 21.0 52 50 20680 275 10 10.0 -0.9 | 120 26 -22.7 13.4 53 50 20726 230 21 16.1 13.5 | 149 32 -16.6 27.7 54 47 21031 295 10 9.1 -4.2 | 113 26 -23.6 10.0 55 45 21336 350 2 0.3 -2.0 | 111 35 -32.3 12.3 56 41 21946 210 10 5.0 8.7 | 130 36 -27.7 22.9 57 39 22250 230 10 7.7 6.4 | 130 32 -25.0 20.7 58 30 23880 105 8 -7.7 2.1 | 112 44 -40.4 16.3 59 29 24079 65 10 -9.1 -4.2 | 103 43 -41.7 10.0 60 28 24384 130 8 -6.1 5.1 | 117 43 -38.8 19.4 61 21 26213 135 13 -9.2 9.2 | 119 48 -41.9 23.4 62 20 26480 205 11 4.6 10.0 | 131 37 -28.0 24.2 63 20 26518 160 14 -4.8 13.2 | 126 46 -37.4 27.4 64 19 26822 210 10 5.0 8.7 | 130 36 -27.7 22.9 65 17 27432 270 9 9.0 -0.0 | 121 28 -23.7 14.2 66 14 28651 235 3 2.5 1.7 | 118 34 -30.2 16.0 67 14 28956 260 11 10.8 1.9 | 126 27 -21.8 16.1 68 12 29870 15 15 -3.9 -14.5 | 90 37 -36.5 -0.3 69 11 30175 345 13 3.4 -12.6 | 93 29 -29.3 1.7 70 10 31050 240 7 6.1 3.5 | 124 32 -26.6 17.7 71 7 33490 290 7 6.6 -2.4 | 114 29 -26.1 11.8 Wind Parameters Mean winds (0-6000m): 263.5 at 47.5 knts Storm direction: 293.5 at 35.6 knts Shear (0-3000m) pos: 8.1 neg: 1.2 tot: 9.2 10-3/s Storm rel Dir Shear (0-3000m): 129.0 deg Storm rel helicity (0-3000m) pos: 439.5 neg: -2.8 tot: 436.7 m^2/s^2 ave: 145.6 10^-3 m/s^2 rel: 0.61 Storm rel vorticity (0-3000m) horiz: 15.2 stream: 9.3 10^-3/s Energy-Hel index: 0.18 Bulk Rich Number: 0.36 Bulk Shear: 214.55 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 ------------------------------------------------------------------------------- 500 207 18 142 39| 24.4 0.0 24.4|252.3 0.0 252.3 504.5 0.96| 25.5 24.5 1000 221 26 155 37| 14.4 0.0 14.4|359.5 0.0 359.5 359.5 0.73| 24.0 17.6 1500 237 28 163 31| 11.0 0.0 11.0|367.8 0.0 367.8 245.2 0.58| 21.4 12.4 2000 250 29 168 25| 8.1 0.0 8.1|367.8 -2.8 365.0 182.5 0.53| 16.8 9.0 2500 257 30 171 21| 6.5 1.4 7.9|386.1 -2.8 383.3 153.3 0.56| 15.0 8.5 3000 262 33 179 19| 8.1 1.2 9.2|439.5 -2.8 436.7 145.6 0.61| 15.2 9.3 4000 266 40 202 18| 6.0 2.4 8.4|454.3 -53.6 400.7 100.2 0.48| 13.3 6.3 5000 266 45 215 21| 4.8 2.6 7.4|455.5-131.7 323.8 64.8 0.35| 12.0 4.2 6000 264 48 217 24| 4.0 2.9 6.9|461.1-251.9 209.2 34.9 0.23| 11.2 2.6 Wrote GIF file: /home/apache/climate/data/raob//KIAD/skewt/KIAD.skewt.20250420.00.gif