UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025042800.upa.cvt Date: 0000Z 28 APR 25 Searching for KIAD... Searching the city database file for: KIAD ... Date:0000Z 28 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 1010 98 20.0 -2.0 23 22.0 9.5 320 21 292.3 292.9 282.1 301.9 3.26 1 1000 174 18.8 -4.2 21 23.0 8.3 335 18 292.0 292.4 281.4 300.2 2.80 2 925 835 12.6 -5.4 28 18.0 4.8 320 26 292.2 292.7 281.5 300.4 2.76 3 871 1335 7.8 -7.2 34 15.0 1.7 325 24 292.3 292.7 281.3 299.9 2.55 4 850 1535 6.2 -8.8 33 15.0 0.3 335 23 292.6 293.1 281.1 299.6 2.31 5 807 1957 2.4 -11.6 35 14.0 -2.6 353 26 293.0 293.3 280.8 298.9 1.95 6 796 2068 2.0 -13.0 32 15.0 -3.2 1 27 293.7 294.0 280.9 299.1 1.76 7 793 2098 2.0 -15.0 27 17.0 -3.6 3 28 294.0 294.3 280.7 298.6 1.50 8 781 2221 2.2 -19.8 18 22.0 -4.4 4 29 295.5 295.7 280.8 298.7 1.02 9 774 2294 4.0 -30.0 6 34.0 -4.4 2 29 298.2 298.3 281.1 299.6 0.41 10 757 2474 4.0 -29.0 7 33.0 -4.4 358 30 300.1 300.2 282.0 301.7 0.46 11 715 2937 3.2 -40.8 2 44.0 -5.7 326 29 304.2 304.2 283.3 304.7 0.15 12 700 3108 2.0 -41.0 2 43.0 -6.5 315 29 304.7 304.7 283.5 305.2 0.15 13 612 4172 -6.9 -39.9 5 33.0 -12.6 326 29 306.4 306.4 284.2 307.1 0.19 14 554 4941 -11.7 -43.7 5 32.0 -16.4 330 40 309.6 309.6 285.4 310.1 0.14 15 548 5024 -11.5 -32.5 16 21.0 -15.7 330 42 310.8 310.8 286.2 312.3 0.45 16 546 5052 -11.7 -30.7 19 19.0 -15.7 330 43 310.9 311.0 286.3 312.7 0.54 17 536 5193 -12.7 -28.7 25 16.0 -16.2 330 48 311.3 311.4 286.6 313.6 0.67 18 518 5453 -14.1 -33.1 18 19.0 -17.7 323 48 312.7 312.8 286.8 314.3 0.45 19 500 5720 -16.5 -35.5 18 19.0 -19.7 315 49 312.9 313.0 286.8 314.2 0.37 20 494 5810 -17.1 -37.1 16 20.0 -20.3 315 49 313.3 313.3 286.9 314.4 0.32 21 460 6339 -21.5 -36.5 25 15.0 -23.7 314 50 314.2 314.3 287.3 315.5 0.37 22 442 6631 -23.7 -39.7 22 16.0 -25.8 313 52 315.1 315.1 287.5 316.1 0.27 23 418 7035 -27.3 -35.3 47 8.0 -28.4 311 53 315.5 315.6 287.8 317.1 0.45 24 416 7070 -27.5 -36.5 42 9.0 -28.7 311 54 315.7 315.8 287.8 317.1 0.40 25 413 7122 -27.9 -41.9 25 14.0 -29.4 311 54 315.8 315.9 287.6 316.7 0.23 26 409 7191 -28.5 -43.5 22 15.0 -30.0 311 54 315.9 316.0 287.6 316.7 0.20 27 400 7350 -30.1 -44.1 24 14.0 -31.4 310 55 315.9 315.9 287.6 316.6 0.19 28 387 7584 -31.9 -47.9 19 16.0 -33.1 310 54 316.5 316.5 287.8 317.0 0.13 29 376 7788 -33.5 -45.5 29 12.0 -34.5 309 56 317.0 317.0 288.0 317.7 0.17 30 363 8034 -35.1 -49.1 23 14.0 -36.0 309 59 318.1 318.1 288.3 318.5 0.12 31 359 8111 -35.5 -52.5 16 17.0 -36.5 308 60 318.6 318.6 288.3 318.9 0.08 32 346 8367 -36.9 -46.9 35 10.0 -37.6 308 64 320.0 320.1 288.9 320.6 0.16 33 338 8529 -38.1 -47.1 38 9.0 -38.7 307 66 320.5 320.6 289.1 321.2 0.16 34 333 8631 -38.9 -50.9 27 12.0 -39.6 307 67 320.8 320.8 289.1 321.2 0.11 35 326 8777 -40.1 -51.1 30 11.0 -40.7 306 69 321.1 321.1 289.2 321.5 0.11 36 324 8819 -40.3 -48.3 42 8.0 -40.8 306 70 321.4 321.4 289.3 322.0 0.15 37 323 8840 -40.5 -51.5 30 11.0 -41.1 306 70 321.4 321.4 289.3 321.8 0.10 38 322 8861 -40.7 -51.7 30 11.0 -41.3 306 70 321.4 321.4 289.3 321.8 0.10 39 318 8946 -41.1 -54.1 23 13.0 -41.7 306 71 322.0 322.0 289.5 322.3 0.08 40 316 8989 -41.3 -53.3 26 12.0 -41.9 306 72 322.3 322.3 289.6 322.7 0.09 41 300 9340 -44.1 -54.1 32 10.0 -44.5 305 74 323.2 323.2 289.8 323.5 0.08 42 279 9824 -48.3 -56.3 39 8.0 -48.6 305 75 323.9 323.9 290.0 324.2 0.07 43 278 9847 -48.5 -59.5 27 11.0 -48.8 305 75 324.0 324.0 290.0 324.2 0.05 44 276 9895 -48.7 -60.7 24 12.0 -49.0 305 75 324.4 324.4 290.1 324.5 0.04 45 250 10540 -53.7 -60.7 42 7.0 -53.8 305 77 326.2 326.2 290.7 326.4 0.04 46 247 10618 -54.3 -61.3 42 7.0 -54.4 304 77 326.5 326.5 290.7 326.6 0.04 47 236 10908 -56.5 -63.5 41 7.0 -56.6 303 76 327.4 327.4 291.0 327.5 0.03 48 222 11294 -58.7 -67.7 30 9.0 -58.8 300 75 329.8 329.8 291.7 329.9 0.02 49 215 11496 -57.9 -69.9 20 12.0 -58.0 298 79 334.1 334.1 292.9 334.2 0.01 50 210 11644 -58.9 -69.9 23 11.0 -59.0 296 82 334.8 334.8 293.0 334.8 0.01 51 207 11734 -59.0 -71.1 19 12.2 -59.1 295 84 336.1 336.1 293.3 336.1 0.01 52 200 11950 -59.1 -74.1 13 15.0 -59.2 305 81 339.2 339.2 294.1 339.2 0.01 53 198 12013 -59.7 -74.7 12 15.0 -59.9 305 79 339.2 339.2 294.1 339.2 0.01 54 189 12304 -58.5 -77.5 7 19.0 -58.7 305 71 345.7 345.7 295.7 345.7 0.01 55 158 13432 -56.9 -84.9 2 28.0 -57.2 295 54 366.6 366.6 299.9 366.6 0.00 56 150 13760 -57.5 -85.5 2 28.0 -57.8 290 52 371.0 371.0 300.8 371.0 0.00 57 135 14423 -57.5 -85.5 2 28.0 -57.8 300 48 382.4 382.4 302.6 382.4 0.00 58 119 15213 -59.9 -86.9 2 27.0 -60.2 291 43 392.0 392.0 304.1 392.0 0.00 59 110 15704 -58.7 -86.7 2 28.0 -59.0 298 47 403.2 403.2 305.6 403.2 0.00 60 100 16300 -59.5 -87.5 1 28.0 -59.8 300 48 412.8 412.8 306.9 412.8 0.00 61 95 16621 -60.1 -87.1 2 27.0 -60.4 303 46 417.7 417.7 307.4 417.7 0.00 62 84 17395 -57.1 -87.1 1 30.0 -57.6 314 34 438.7 438.7 309.7 438.8 0.00 63 78 17864 -57.9 -86.9 1 29.0 -58.4 296 23 446.5 446.5 310.5 446.5 0.00 64 70 18540 -62.3 -88.3 2 26.0 -62.6 290 20 451.1 451.1 311.0 451.1 0.00 65 64 19091 -63.3 -89.3 2 26.0 -63.6 297 31 460.6 460.6 311.8 460.6 0.00 66 63 19189 -61.3 -88.3 2 27.0 -61.7 295 33 467.1 467.1 312.4 467.1 0.00 67 61 19389 -61.3 -88.3 2 27.0 -61.7 306 32 471.4 471.4 312.8 471.5 0.00 68 60 19491 -61.3 -89.3 1 28.0 -61.7 312 32 473.7 473.7 313.0 473.7 0.00 69 60 19491 -60.1 -88.1 1 28.0 -60.6 312 32 476.4 476.4 313.1 476.4 0.00 70 58 19702 -60.1 -89.1 1 29.0 -60.6 324 31 481.0 481.0 313.5 481.0 0.00 71 57 19812 -56.5 -87.5 1 31.0 -57.3 330 31 491.6 491.6 314.4 491.6 0.00 72 50 20630 -62.9 -89.9 1 27.0 -63.3 280 4 495.3 495.3 314.6 495.3 0.00 73 49 20755 -59.9 -88.9 1 29.0 -60.5 350 1 505.2 505.2 315.3 505.2 0.00 74 47 21015 -60.3 -88.3 1 28.0 -60.9 268 10 510.3 510.3 315.7 510.4 0.00 75 45 21286 -60.3 -89.3 1 29.0 -60.9 287 15 516.7 516.7 316.1 516.7 0.00 76 43 21571 -57.3 -88.3 1 31.0 -58.2 290 12 530.9 530.9 317.0 530.9 0.00 77 41 21871 -58.5 -88.5 1 30.0 -59.3 354 11 535.1 535.2 317.2 535.2 0.00 78 35 22874 -54.3 -86.3 1 32.0 -55.8 297 10 570.9 570.9 319.2 570.9 0.01 79 34 23059 -55.3 -86.3 1 31.0 -56.7 312 10 573.0 573.0 319.3 573.0 0.01 80 32 23447 -54.1 -87.1 1 33.0 -55.8 315 10 586.2 586.2 320.0 586.3 0.01 81 32 23447 -53.9 -86.9 1 33.0 -55.6 315 10 586.8 586.8 320.0 586.8 0.01 82 32 23447 -53.9 -85.9 1 32.0 -55.6 315 10 586.8 586.8 320.0 586.8 0.01 83 30 23860 -54.7 -86.7 1 32.0 -56.3 240 6 595.5 595.5 320.4 595.6 0.01 84 21 26155 -52.1 -86.1 1 34.0 -54.9 0 14 667.3 667.3 323.3 667.4 0.01 85 20 26470 -53.1 -86.1 1 33.0 -55.8 40 9 673.6 673.6 323.6 673.7 0.01 86 17 27529 -49.1 -85.1 1 36.0 -53.3 152 8 718.5 718.5 325.0 718.6 0.02 87 12 29841 -44.9 -82.9 1 38.0 -52.0 265 23 808.7 808.7 327.4 809.0 0.03 88 11 30422 -45.7 -83.7 1 38.0 -52.7 291 14 826.1 826.1 327.8 826.4 0.03 89 10 31060 -44.3 -83.3 1 39.0 -52.4 305 23 854.2 854.2 328.5 854.5 0.04 90 9.7 31264 -44.3 -83.3 1 39.0 -52.5 861.7 861.7 328.7 862.0 0.04 91 9.0 31770 -40.7 -81.7 0 41.0 -51.1 894.2 894.2 329.3 894.7 0.06 92 8.3 32323 -39.1 -81.1 0 42.0 -50.8 921.4 921.4 329.8 922.1 0.07 93 8.0 32575 -39.9 -80.9 0 41.0 -51.3 928.0 928.0 329.9 928.7 0.07 94 7.7 32837 -39.7 -80.7 0 41.0 -51.4 939.0 939.0 330.2 939.8 0.08 95 7.4 33110 -36.1 -79.1 0 43.0 -50.2 964.4 964.4 330.6 965.5 0.10 TRP 222 11294 -58.7 -67.7 30 9.0 -58.8 300 75 329.8 329.8 291.7 329.9 0.02 WND 207 11734 -59.0 -71.1 19 12.2 -59.1 295 84 336.1 336.1 293.3 336.1 0.01 Sounding variables and indices 1000-500 mb thick: 5546.00 m Freezing level: 680.22 mb = 3347.14 m = 10981.29 ft Wetbulb zero: 845.41 mb = 1579.00 m = 5180.40 ft Precipitable water: 0.28 inches Sfc-500 mean rel hum: 15.66 % Est. max temperature: 20.15 C = 68.27 F Sfc-Lift cond lev (LCL): 726.14 mb = 2811.43 m = 9223.74 ft T: 3.42 C 700-500 lapse rate: 7.08 C/km ThetaE index: 1.70 C Layer 1000.0- 925.0 mb Conv cond level (CCL): 542.09 mb = 5107.11 m = 16755.40 ft Mean mixing ratio: 2.79 g/kg Conv temperature: 38.76 C = 101.77 F Cap Strength: 12.42 C Lifted Index: 12.19 C Risk: None Lifted Index @300 mb: 16.29 C Lifted Index @700 mb: 11.18 C Showalter Index: 12.78 C Risk: None Total Totals Index: 30.40 C Risk: None Vertical Totals Index: 22.70 C Cross Totals Index: 7.70 C K Index: -29.10 Risk: None Sweat Index: 95.00 Risk: None Energy Index: 3.15 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 0.63 J/kg Max Up Vert Vel: 1.13 m/s Conv Inhibition (B-): 57061.57 J/kg Cap Strength: 12.40 C Lift Cond Lev (LCL): 705.56 mb = 3044.09 m = 9987.04 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 359 at 24 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 1010 98 320 21 13.5 -16.1 | 240 15 13.0 7.6 1 1000 174 335 18 7.6 -16.3 | 224 10 7.1 7.4 2 985 305 325 18 10.3 -14.7 | 228 13 9.8 8.9 3 950 610 320 23 14.8 -17.6 | 247 15 14.2 6.1 4 925 835 320 26 16.7 -19.9 | 257 17 16.2 3.8 5 916 914 320 26 16.7 -19.9 | 257 17 16.2 3.8 6 883 1219 320 25 16.1 -19.2 | 254 16 15.5 4.5 7 850 1535 335 23 9.7 -20.8 | 253 10 9.2 2.8 8 820 1829 345 24 6.2 -23.2 | 265 6 5.7 0.5 9 789 2134 5 28 -2.4 -27.9 | 35 5 -3.0 -4.2 10 760 2438 360 30 -0.0 -30.0 | 5 6 -0.5 -6.3 11 732 2743 345 28 7.2 -27.0 | 297 8 6.7 -3.4 12 705 3048 315 30 21.2 -21.2 | 263 21 20.7 2.5 13 700 3108 315 29 20.5 -20.5 | 261 20 20.0 3.2 14 652 3658 330 29 14.5 -25.1 | 276 14 14.0 -1.4 15 603 4267 325 29 16.6 -23.8 | 270 16 16.1 -0.1 16 557 4877 330 38 19.0 -32.9 | 297 21 18.5 -9.2 17 536 5182 330 48 24.0 -41.6 | 307 30 23.5 -17.9 18 500 5720 315 49 34.6 -34.6 | 288 36 34.1 -11.0 19 475 6096 315 49 34.6 -34.6 | 288 36 34.1 -11.0 20 400 7350 310 55 42.1 -35.4 | 286 43 41.6 -11.7 21 385 7620 310 54 41.4 -34.7 | 285 42 40.8 -11.0 22 309 9144 305 74 60.6 -42.4 | 287 63 60.1 -18.8 23 300 9340 305 74 60.6 -42.4 | 287 63 60.1 -18.8 24 250 10540 305 77 63.1 -44.2 | 288 66 62.5 -20.5 25 222 11294 300 75 65.0 -37.5 | 282 66 64.4 -13.8 26 207 11734 295 84 76.1 -35.5 | 279 77 75.6 -11.8 27 202 11887 295 84 76.1 -35.5 | 279 77 75.6 -11.8 28 200 11950 305 81 66.4 -46.5 | 289 70 65.8 -22.8 29 183 12497 305 66 54.1 -37.9 | 285 55 53.5 -14.2 30 166 13106 300 56 48.5 -28.0 | 275 48 48.0 -4.3 31 150 13760 290 52 48.9 -17.8 | 263 49 48.3 5.9 32 144 14021 290 52 48.9 -17.8 | 263 49 48.3 5.9 33 131 14630 305 46 37.7 -26.4 | 274 37 37.1 -2.7 34 118 15240 290 43 40.4 -14.7 | 257 41 39.9 9.0 35 107 15850 300 48 41.6 -24.0 | 270 41 41.0 -0.3 36 102 16154 300 35 30.3 -17.5 | 258 30 29.8 6.2 37 100 16300 300 48 41.6 -24.0 | 270 41 41.0 -0.3 38 97 16459 300 48 41.6 -24.0 | 270 41 41.0 -0.3 39 84 17374 315 34 24.0 -24.0 | 271 24 23.5 -0.4 40 73 18288 280 14 13.8 -2.4 | 212 25 13.2 21.2 41 70 18540 290 20 18.8 -6.8 | 227 25 18.3 16.8 42 69 18593 265 17 16.9 1.5 | 213 30 16.4 25.2 43 66 18898 300 26 22.5 -13.0 | 244 24 22.0 10.7 44 63 19202 295 33 29.9 -13.9 | 252 31 29.4 9.7 45 57 19812 330 31 15.5 -26.8 | 282 15 15.0 -3.2 46 54 20117 5 13 -1.1 -13.0 | 171 11 -1.7 10.7 47 50 20630 280 4 3.9 -0.7 | 188 23 3.4 23.0 48 49 20726 0 0 -0.0 -0.0 | 179 24 -0.5 23.7 49 47 21031 265 10 10.0 0.9 | 201 26 9.4 24.5 50 45 21336 290 16 15.0 -5.5 | 219 23 14.5 18.2 51 43 21641 290 11 10.3 -3.8 | 206 22 9.8 19.9 52 41 21946 10 11 -1.9 -10.8 | 169 13 -2.5 12.8 53 37 22555 345 10 2.6 -9.7 | 188 14 2.0 14.0 54 35 22860 295 10 9.1 -4.2 | 204 21 8.5 19.4 55 33 23165 320 10 6.4 -7.7 | 200 17 5.9 16.0 56 32 23470 315 10 7.1 -7.1 | 201 18 6.5 16.6 57 30 23860 240 6 5.2 3.0 | 190 27 4.7 26.7 58 29 24079 335 11 4.6 -10.0 | 197 14 4.1 13.7 59 28 24384 245 8 7.3 3.4 | 194 28 6.7 27.1 60 26 24689 235 10 8.2 5.7 | 195 30 7.6 29.4 61 25 24994 265 10 10.0 0.9 | 201 26 9.4 24.5 62 21 26213 5 14 -1.2 -13.9 | 170 10 -1.8 9.7 63 20 26470 40 9 -5.8 -6.9 | 159 18 -6.3 16.8 64 20 26518 5 14 -1.2 -13.9 | 170 10 -1.8 9.7 65 19 26822 40 10 -6.4 -7.7 | 156 17 -7.0 16.0 66 17 27432 120 7 -6.1 3.5 | 166 28 -6.6 27.2 67 17 27737 205 10 4.2 9.1 | 186 33 3.7 32.7 68 15 28346 260 13 12.8 2.3 | 205 29 12.3 25.9 69 14 28651 260 15 14.8 2.6 | 208 30 14.2 26.3 70 14 28956 265 10 10.0 0.9 | 201 26 9.4 24.5 71 13 29261 275 12 12.0 -1.0 | 207 25 11.4 22.6 72 13 29566 260 18 17.7 3.1 | 213 32 17.2 26.8 73 12 29870 265 23 22.9 2.0 | 221 34 22.4 25.7 74 11 30175 285 11 10.6 -2.8 | 206 23 10.1 20.8 75 10 31060 305 23 18.8 -13.2 | 240 21 18.3 10.5 Wind Parameters Mean winds (0-6000m): 328.7 at 31.6 knts Storm direction: 358.7 at 23.7 knts Shear (0-3000m) pos: 3.3 neg: 4.1 tot: 7.4 10-3/s Storm rel Dir Shear (0-3000m): 21.7 deg Storm rel helicity (0-3000m) pos: 41.5 neg: -61.9 tot: -20.4 m^2/s^2 ave: -6.8 10^-3 m/s^2 rel: -0.08 Storm rel vorticity (0-3000m) horiz: 10.9 stream: -0.8 10^-3/s Energy-Hel index: 0.00 Bulk Rich Number: 0.03 Bulk Shear: 19.22 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 ------------------------------------------------------------------------------- 500 325 20 235 13| 1.9 0.0 1.9| 18.9 -10.9 8.0 16.0 0.14| 13.4 1.9 1000 322 22 246 14| 0.9 1.3 2.3| 31.2 -13.2 18.0 18.0 0.25| 8.6 2.2 1500 324 23 248 14| 2.4 0.9 3.3| 32.3 -15.0 17.2 11.5 0.17| 8.4 1.4 2000 330 23 253 12| 4.9 0.7 5.6| 41.2 -15.0 26.2 13.1 0.35| 9.5 3.4 2500 338 25 264 9| 3.9 1.6 5.5| 41.5 -24.9 16.6 6.6 0.15| 9.2 1.4 3000 337 25 267 9| 3.3 4.1 7.4| 41.5 -61.9 -20.4 -6.8 -0.08| 10.9 -0.8 4000 333 26 269 11| 3.3 3.2 6.5| 60.4 -65.7 -5.3 -1.3 -0.02| 9.4 -0.2 5000 332 28 275 13| 3.3 2.6 5.9|121.2 -66.7 54.5 10.9 0.11| 9.2 1.0 6000 329 32 282 16| 2.8 3.2 6.0|127.0-159.2 -32.2 -5.4 -0.00| 9.0 -0.0 Wrote GIF file: /home/apache/climate/data/raob//KIAD/skewt/KIAD.skewt.20250428.00.gif