UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025042600.upa.cvt Date: 0000Z 26 APR 25 Searching for KIAD... Searching the city database file for: KIAD ... Date:0000Z 26 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 1007 98 22.4 16.4 69 6.0 18.4 180 11 295.0 297.1 291.3 328.6 11.72 1 1000 146 21.6 15.6 69 6.0 17.7 180 14 294.8 296.8 290.8 326.9 11.21 2 962 481 18.6 14.6 78 4.0 16.0 181 23 295.0 297.0 290.7 326.4 10.92 3 928 789 16.8 13.7 82 3.1 14.8 194 32 296.2 298.1 290.9 327.0 10.67 4 925 817 16.6 13.7 83 2.9 14.7 195 33 296.3 298.2 290.9 327.2 10.71 5 876 1279 12.6 12.0 96 0.6 12.2 203 30 296.8 298.6 290.6 326.1 10.11 6 850 1532 11.4 10.8 96 0.6 11.0 215 24 298.1 299.8 290.6 326.1 9.61 7 807 1965 9.0 7.5 90 1.5 8.1 227 24 300.0 301.5 289.9 323.8 8.08 8 790 2141 7.8 7.0 95 0.8 7.3 230 23 300.5 302.0 290.0 324.1 7.98 9 787 2172 8.2 5.9 85 2.3 6.9 232 23 301.3 302.7 289.8 323.3 7.42 10 768 2374 7.2 4.6 84 2.6 5.8 245 21 302.3 303.6 289.7 323.1 6.94 11 747 2602 5.2 3.8 91 1.4 4.4 245 19 302.6 303.8 289.6 322.8 6.74 12 700 3131 2.2 0.1 86 2.1 1.1 245 21 304.9 305.9 289.3 321.7 5.51 13 695 3189 1.8 -0.5 85 2.3 0.7 244 21 305.1 306.1 289.2 321.3 5.31 14 679 3376 0.2 -0.9 92 1.1 -0.3 240 22 305.4 306.3 289.2 321.5 5.28 15 671 3471 0.0 -1.9 87 1.9 -0.9 239 22 306.2 307.1 289.2 321.4 4.96 16 625 4035 -3.9 -4.1 99 0.2 -4.0 237 24 308.0 308.8 289.3 322.0 4.52 17 624 4048 -4.1 -4.6 96 0.5 -4.3 237 24 307.9 308.7 289.2 321.4 4.36 18 619 4112 -3.1 -7.6 71 4.5 -5.0 239 24 309.8 310.4 289.0 320.8 3.49 19 605 4292 -4.1 -8.4 72 4.3 -5.9 245 25 310.6 311.3 289.1 321.3 3.35 20 559 4911 -8.7 -11.1 83 2.4 -9.6 245 22 312.3 312.9 289.3 321.7 2.93 21 554 4980 -8.9 -12.6 75 3.7 -10.3 245 22 312.9 313.4 289.2 321.4 2.62 22 548 5065 -9.3 -11.4 85 2.1 -10.1 245 22 313.4 313.9 289.6 322.8 2.92 23 545 5107 -9.3 -12.6 77 3.3 -10.5 245 22 313.9 314.4 289.5 322.5 2.66 24 539 5193 -9.5 -11.9 83 2.4 -10.4 245 22 314.6 315.2 289.9 323.9 2.85 25 538 5207 -9.5 -11.7 84 2.2 -10.4 245 23 314.8 315.3 290.0 324.2 2.90 26 536 5236 -9.7 -12.0 83 2.3 -10.6 245 23 314.9 315.4 290.0 324.1 2.84 27 532 5294 -9.5 -15.5 62 6.0 -11.6 245 23 315.8 316.2 289.6 322.9 2.15 28 531 5308 -9.5 -15.5 62 6.0 -11.6 245 23 316.0 316.4 289.7 323.1 2.15 29 525 5396 -9.9 -17.9 52 8.0 -12.5 245 23 316.5 316.9 289.5 322.5 1.78 30 500 5770 -13.1 -20.1 56 7.0 -15.2 245 32 317.1 317.4 289.5 322.3 1.55 31 499 5785 -13.1 -20.1 56 7.0 -15.2 249 32 317.2 317.5 289.5 322.5 1.55 32 496 5831 -13.5 -19.5 61 6.0 -15.3 250 31 317.3 317.6 289.6 322.8 1.64 33 494 5862 -13.3 -16.9 74 3.6 -14.5 250 31 317.9 318.3 290.2 324.8 2.06 34 462 6371 -16.5 -19.0 81 2.5 -17.3 254 28 320.1 320.4 290.6 326.3 1.84 35 450 6569 -18.1 -20.2 84 2.1 -18.7 257 27 320.5 320.8 290.6 326.3 1.71 36 425 6994 -21.7 -21.9 98 0.2 -21.8 263 27 321.2 321.5 290.7 326.5 1.56 37 419 7099 -21.9 -23.4 88 1.5 -22.2 265 27 322.2 322.5 290.9 327.0 1.38 38 405 7349 -24.1 -24.3 98 0.2 -24.1 269 26 322.5 322.8 290.9 327.1 1.32 39 402 7404 -24.5 -25.1 95 0.6 -24.6 269 26 322.7 322.9 290.9 327.0 1.24 40 400 7440 -24.7 -26.2 87 1.5 -25.0 270 26 322.9 323.1 290.8 326.8 1.13 41 394 7549 -25.1 -28.0 77 2.9 -25.7 273 25 323.8 324.0 290.9 327.2 0.97 42 383 7753 -26.9 -28.6 85 1.7 -27.2 275 26 324.0 324.2 291.0 327.4 0.94 43 382 7772 -26.9 -29.6 78 2.7 -27.4 275 26 324.3 324.4 290.9 327.3 0.86 44 381 7791 -27.1 -29.2 82 2.1 -27.5 276 26 324.2 324.4 291.0 327.4 0.90 45 366 8078 -28.9 -33.4 65 4.5 -29.6 276 27 325.6 325.7 291.1 327.9 0.62 46 362 8156 -29.5 -34.5 62 5.0 -30.2 277 27 325.8 325.9 291.1 327.9 0.57 47 330 8806 -35.1 -38.4 72 3.3 -35.5 279 30 326.9 327.0 291.3 328.4 0.42 48 300 9460 -40.9 -45.6 60 4.7 -41.2 280 36 327.7 327.8 291.3 328.5 0.22 49 297 9529 -41.3 -45.7 62 4.4 -41.6 281 37 328.1 328.1 291.4 328.9 0.22 50 296 9552 -41.5 -47.5 52 6.0 -41.9 281 37 328.1 328.2 291.4 328.8 0.18 51 293 9621 -42.1 -48.1 52 6.0 -42.5 281 38 328.2 328.3 291.4 328.9 0.17 52 285 9809 -43.7 -47.1 69 3.4 -43.9 283 40 328.6 328.6 291.5 329.3 0.19 53 284 9833 -44.1 -47.8 67 3.7 -44.3 283 40 328.3 328.3 291.5 329.0 0.18 54 282 9880 -44.1 -50.1 51 6.0 -44.4 283 40 329.0 329.0 291.6 329.5 0.14 55 277 10001 -45.3 -50.2 58 4.9 -45.6 284 42 328.9 329.0 291.6 329.5 0.14 56 271 10147 -46.5 -53.5 45 7.0 -46.8 286 43 329.3 329.3 291.6 329.6 0.10 57 250 10680 -51.1 -58.1 43 7.0 -51.3 290 49 330.1 330.1 291.8 330.3 0.06 58 200 12090 -63.3 -68.3 51 5.0 -63.3 275 47 332.5 332.5 292.4 332.6 0.02 59 172 12999 -69.1 -73.4 54 4.3 -69.1 285 53 337.6 337.6 293.7 337.6 0.01 60 150 13820 -65.7 -86.7 4 21.0 -65.8 285 51 356.9 356.9 298.1 356.9 0.00 61 100 16320 -62.3 -87.3 2 25.0 -62.5 310 31 407.4 407.4 306.2 407.4 0.00 62 91 16902 -63.3 -87.3 2 24.0 -63.5 308 27 416.5 416.5 307.3 416.5 0.00 63 82 17547 -60.9 -86.9 2 26.0 -61.2 306 21 434.0 434.0 309.3 434.0 0.00 64 77 17938 -62.1 -88.1 2 26.0 -62.4 284 17 439.4 439.4 309.8 439.4 0.00 65 73 18269 -60.9 -87.9 2 27.0 -61.3 280 28 448.7 448.7 310.7 448.7 0.00 66 70 18530 -62.1 -88.1 2 26.0 -62.4 295 27 451.5 451.5 311.0 451.5 0.00 67 68 18708 -62.3 -88.3 2 26.0 -62.6 295 27 454.9 454.9 311.3 454.9 0.00 68 66 18893 -60.1 -88.1 1 28.0 -60.5 295 28 463.5 463.5 312.1 463.6 0.00 69 59 19585 -62.5 -88.5 2 26.0 -62.9 271 12 473.3 473.3 312.9 473.3 0.00 70 58 19691 -60.9 -87.9 2 27.0 -61.3 273 14 479.2 479.2 313.4 479.2 0.00 71 51 20487 -60.9 -88.9 1 28.0 -61.4 300 12 497.1 497.1 314.8 497.2 0.00 72 50 20610 -59.7 -87.7 1 28.0 -60.3 235 8 502.8 502.8 315.1 502.8 0.00 73 45 21274 -56.9 -86.9 1 30.0 -57.8 292 16 525.0 525.0 316.6 525.0 0.00 74 41 21865 -56.1 -87.1 1 31.0 -57.2 50 3 541.1 541.1 317.6 541.2 0.00 75 37 22515 -57.9 -87.9 1 30.0 -58.9 317 10 552.6 552.6 318.2 552.7 0.00 76 34 23052 -55.1 -87.1 1 32.0 -56.5 314 13 573.5 573.5 319.3 573.6 0.01 77 32 23438 -56.5 -87.5 1 31.0 -57.8 15 10 579.8 579.8 319.6 579.8 0.01 78 30 23850 -54.7 -86.7 1 32.0 -56.3 325 6 595.5 595.5 320.4 595.6 0.01 79 26 24764 -54.1 -87.1 1 33.0 -56.1 334 10 622.1 622.1 321.6 622.2 0.01 80 26 24764 -53.9 -86.9 1 33.0 -55.9 334 10 622.7 622.7 321.6 622.7 0.01 81 25 25015 -54.5 -86.5 1 32.0 -56.5 346 10 628.0 628.0 321.8 628.0 0.01 82 22 25836 -51.9 -85.9 1 34.0 -54.6 22 10 659.1 659.1 323.0 659.2 0.01 83 20 26450 -53.7 -86.7 1 33.0 -56.2 65 6 671.8 671.8 323.5 671.9 0.01 84 19 26780 -54.1 -87.1 1 33.0 -56.6 86 6 680.5 680.5 323.8 680.6 0.01 85 18 27130 -51.1 -86.1 1 35.0 -54.5 158 1 700.6 700.6 324.4 700.7 0.01 86 17 27503 -51.5 -85.5 1 34.0 -54.9 321 8 710.8 710.8 324.8 710.9 0.02 87 11 30373 -45.3 -83.3 1 38.0 -52.5 276 11 827.6 827.6 327.9 827.9 0.03 88 10 31010 -45.5 -84.5 0 39.0 -53.0 10 14 849.7 849.7 328.4 850.0 0.03 89 9.1 31642 -41.7 -82.7 0 41.0 -51.5 18 14 887.5 887.5 329.2 888.0 0.05 90 8.3 32263 -42.9 -82.9 0 40.0 -52.5 26 13 906.4 906.5 329.5 907.0 0.05 91 7.1 33323 -38.9 -80.9 0 42.0 -51.5 39 13 964.3 964.4 330.6 965.2 0.08 92 7.0 33420 -39.1 -81.1 0 42.0 -51.7 40 13 967.4 967.5 330.7 968.3 0.08 93 6.8 33619 -39.5 -81.5 0 42.0 -52.0 973.8 973.8 330.8 974.6 0.08 94 5.9 34597 -36.1 -79.1 0 43.0 -51.4 1028.9 1029.0 331.6 1030.5 0.13 95 5.7 34838 -32.9 -76.9 0 44.0 -50.5 1053.1 1053.3 332.0 1055.5 0.19 96 5.5 35090 -32.1 -76.1 0 44.0 -50.5 1067.5 1067.6 332.2 1070.4 0.22 TRP 172 12999 -69.1 -73.4 54 4.3 -69.1 285 53 337.6 337.6 293.7 337.6 0.01 WND Sounding variables and indices 1000-500 mb thick: 5624.00 m Freezing level: 671.00 mb = 3470.92 m = 11387.38 ft Wetbulb zero: 684.33 mb = 3313.16 m = 10869.81 ft Precipitable water: 1.48 inches Sfc-500 mean rel hum: 82.54 % Est. max temperature: 25.18 C = 77.32 F Sfc-Lift cond lev (LCL): 921.97 mb = 844.82 m = 2771.69 ft T: 16.36 C 700-500 lapse rate: 5.80 C/km ThetaE index: 2.85 C Layer 787.0- 679.0 mb Conv cond level (CCL): 884.23 mb = 1199.42 m = 3935.05 ft Mean mixing ratio: 10.90 g/kg Conv temperature: 24.13 C = 75.44 F Cap Strength: 1.05 C Lifted Index: -0.32 C Risk: Thunderstorms probable Lifted Index @300 mb: 1.44 C Lifted Index @700 mb: -0.93 C Showalter Index: 0.06 C Risk: Thunderstorms probable Total Totals Index: 48.40 C Risk: Scattered moderate thunderstorms Vertical Totals Index: 24.50 C Cross Totals Index: 23.90 C K Index: 33.20 Risk: 60-80 % chance of thunderstorms Sweat Index: 297.10 Risk: None Energy Index: -0.83 Risk: Scattered severe thunderstorms Parcel Indices Parcel: using 100 mb layer CAPE (B+): 124.77 J/kg Max Up Vert Vel: 15.80 m/s Conv Inhibition (B-): 15.96 J/kg Cap Strength: 1.05 C Lift Cond Lev (LCL): 900.54 mb = 1044.36 m = 3426.33 ft Lev Free Conv (LFC): 825.54 mb = 1775.36 m = 5824.61 ft Equ Level (EL): 775.54 mb = 2293.59 m = 7524.82 ft B at Equ Level: 10.33 J/kg Max Parcel Lev (MPL): 295.54 mb = 9562.33 m = 31372.08 ft Wind level data Storm motion: 259 at 18 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 98 180 11 0.0 11.0 | 114 19 -17.7 7.7 1 1000 146 180 14 0.0 14.0 | 121 21 -17.7 10.7 2 982 305 175 18 -1.6 17.9 | 127 24 -19.2 14.7 3 948 610 185 26 2.3 25.9 | 146 27 -15.4 22.6 4 925 817 195 33 8.5 31.9 | 162 30 -9.1 28.6 5 914 914 195 32 8.3 30.9 | 161 29 -9.4 27.6 6 882 1219 200 31 10.6 29.1 | 165 27 -7.1 25.8 7 850 1532 215 24 13.8 19.7 | 167 17 -3.9 16.4 8 820 1829 225 25 17.7 17.7 | 180 14 0.0 14.4 9 790 2134 230 23 17.6 14.8 | 180 12 -0.0 11.5 10 761 2438 250 20 18.8 6.8 | 198 4 1.1 3.6 11 734 2743 240 19 16.5 9.5 | 169 6 -1.2 6.2 12 707 3048 240 19 16.5 9.5 | 169 6 -1.2 6.2 13 700 3131 245 21 19.0 8.9 | 194 6 1.4 5.6 14 655 3658 235 23 18.8 13.2 | 187 10 1.2 9.9 15 630 3962 235 24 19.7 13.8 | 191 11 2.0 10.5 16 606 4267 245 25 22.7 10.6 | 214 9 5.0 7.3 17 560 4877 245 22 19.9 9.3 | 201 6 2.3 6.0 18 518 5486 245 23 20.8 9.7 | 206 7 3.2 6.4 19 500 5770 245 32 29.0 13.5 | 228 15 11.3 10.2 20 499 5791 250 32 30.1 10.9 | 238 15 12.4 7.7 21 479 6096 250 28 26.3 9.6 | 234 11 8.6 6.3 22 400 7440 270 26 26.0 -0.0 | 291 9 8.3 -3.3 23 390 7620 275 25 24.9 -2.2 | 307 9 7.2 -5.5 24 314 9144 280 32 31.5 -5.6 | 303 16 13.8 -8.8 25 300 9460 280 36 35.5 -6.3 | 298 20 17.8 -9.5 26 250 10680 290 49 46.0 -16.8 | 305 35 28.4 -20.0 27 227 11278 290 57 53.6 -19.5 | 302 43 35.9 -22.8 28 200 12090 275 47 46.8 -4.1 | 284 30 29.2 -7.4 29 187 12497 270 46 46.0 -0.0 | 277 29 28.3 -3.3 30 172 12999 285 53 51.2 -13.7 | 297 38 33.5 -17.0 31 169 13106 285 52 50.2 -13.5 | 297 37 32.6 -16.7 32 153 13716 280 39 38.4 -6.8 | 296 23 20.7 -10.1 33 150 13820 285 51 49.3 -13.2 | 298 36 31.6 -16.5 34 145 14021 285 51 49.3 -13.2 | 298 36 31.6 -16.5 35 125 14935 280 33 32.5 -5.7 | 301 17 14.8 -9.0 36 119 15240 275 40 39.8 -3.5 | 287 23 22.2 -6.8 37 108 15850 300 48 41.6 -24.0 | 319 36 23.9 -27.3 38 100 16320 310 31 23.7 -19.9 | 345 24 6.1 -23.2 39 98 16459 310 31 23.7 -19.9 | 345 24 6.1 -23.2 40 80 17678 305 20 16.4 -11.5 | 5 15 -1.3 -14.8 41 76 17983 280 17 16.7 -3.0 | 8 6 -0.9 -6.2 42 73 18288 280 29 28.6 -5.0 | 307 14 10.9 -8.3 43 70 18530 295 27 24.5 -11.4 | 335 16 6.8 -14.7 44 66 18898 295 28 25.4 -11.8 | 333 17 7.7 -15.1 45 63 19202 330 18 9.0 -15.6 | 25 21 -8.7 -18.9 46 60 19507 270 10 10.0 -0.0 | 67 8 -7.7 -3.3 47 57 19812 275 16 15.9 -1.4 | 20 5 -1.7 -4.7 48 54 20117 330 22 11.0 -19.1 | 17 23 -6.7 -22.3 49 52 20422 335 14 5.9 -12.7 | 36 20 -11.8 -16.0 50 50 20610 235 8 6.6 4.6 | 97 11 -11.1 1.3 51 49 20726 360 11 -0.0 -11.0 | 51 23 -17.7 -14.3 52 47 21031 235 10 8.2 5.7 | 105 10 -9.5 2.5 53 45 21336 305 17 13.9 -9.8 | 16 14 -3.7 -13.0 54 43 21641 350 10 1.7 -9.8 | 51 21 -15.9 -13.1 55 41 21946 70 1 -0.9 -0.3 | 79 19 -18.6 -3.6 56 39 22250 290 10 9.4 -3.4 | 51 11 -8.3 -6.7 57 37 22555 320 10 6.4 -7.7 | 46 16 -11.2 -10.9 58 35 22860 295 10 9.1 -4.2 | 49 11 -8.6 -7.5 59 33 23165 325 15 8.6 -12.3 | 30 18 -9.1 -15.6 60 32 23470 20 10 -3.4 -9.4 | 59 25 -21.1 -12.7 61 30 23774 355 1 0.1 -1.0 | 76 18 -17.6 -4.3 62 30 23850 325 6 3.4 -4.9 | 60 16 -14.2 -8.2 63 28 24384 315 10 7.1 -7.1 | 46 15 -10.6 -10.4 64 26 24689 330 10 5.0 -8.7 | 47 17 -12.7 -11.9 65 24 25298 360 10 -0.0 -10.0 | 53 22 -17.7 -13.3 66 23 25603 5 12 -1.0 -12.0 | 51 24 -18.7 -15.2 67 20 26450 65 6 -5.4 -2.5 | 76 24 -23.1 -5.8 68 20 26518 35 10 -5.7 -8.2 | 64 26 -23.4 -11.5 69 18 27127 150 1 -0.5 0.9 | 82 18 -18.2 -2.4 70 17 27432 305 7 5.7 -4.0 | 59 14 -11.9 -7.3 71 16 27737 360 10 -0.0 -10.0 | 53 22 -17.7 -13.3 72 16 28042 35 10 -5.7 -8.2 | 64 26 -23.4 -11.5 73 15 28346 360 10 -0.0 -10.0 | 53 22 -17.7 -13.3 74 14 28651 20 10 -3.4 -9.4 | 59 25 -21.1 -12.7 75 14 28956 305 12 9.8 -6.9 | 38 13 -7.8 -10.2 76 13 29261 350 15 2.6 -14.8 | 40 24 -15.1 -18.1 77 12 29566 20 11 -3.8 -10.3 | 58 25 -21.4 -13.6 78 11 30175 245 10 9.1 4.2 | 96 9 -8.6 0.9 79 10 31010 10 14 -2.4 -13.8 | 50 26 -20.1 -17.1 80 7 33420 40 13 -8.4 -10.0 | 63 29 -26.0 -13.2 Wind Parameters Mean winds (0-6000m): 229.5 at 24.0 knts Storm direction: 259.5 at 18.0 knts Shear (0-3000m) pos: 3.1 neg: 0.2 tot: 3.2 10-3/s Storm rel Dir Shear (0-3000m): 69.7 deg Storm rel helicity (0-3000m) pos: 182.8 neg: -3.1 tot: 179.7 m^2/s^2 ave: 59.9 10^-3 m/s^2 rel: 0.50 Storm rel vorticity (0-3000m) horiz: 9.7 stream: 4.9 10^-3/s Energy-Hel index: 0.14 Bulk Rich Number: 2.72 Bulk Shear: 45.88 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 ------------------------------------------------------------------------------- 500 180 19 131 24| 15.2 0.0 15.2| 82.2 0.0 82.2 164.4 0.83| 16.1 13.4 1000 188 25 147 26| 10.9 0.0 10.9|150.6 0.0 150.6 150.6 0.84| 13.5 11.4 1500 195 26 153 24| 5.8 0.0 5.8|164.5 0.0 164.5 109.7 0.64| 13.1 8.4 2000 202 25 158 22| 4.7 0.0 4.7|176.1 -0.2 175.9 88.0 0.62| 11.3 7.0 2500 208 25 162 19| 3.7 0.0 3.7|180.3 -1.6 178.8 71.5 0.53| 11.0 5.8 3000 213 24 164 17| 3.1 0.2 3.2|182.8 -3.1 179.7 59.9 0.50| 9.7 4.9 4000 220 23 170 15| 2.6 0.6 3.2|190.7 -4.7 185.9 46.5 0.48| 8.2 4.0 5000 225 23 175 13| 2.1 0.4 2.5|196.4 -8.1 188.3 37.7 0.46| 7.2 3.3 6000 229 24 183 12| 2.0 0.6 2.6|216.7 -11.1 205.6 34.3 0.45| 7.2 3.2 Wrote GIF file: /home/apache/climate/data/raob//KIAD/skewt/KIAD.skewt.20250426.00.gif