UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025042712.upa.cvt Date: 1200Z 27 APR 25 Searching for KIAD... Searching the city database file for: KIAD ... Date:1200Z 27 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 1011 98 8.8 0.8 57 8.0 5.1 295 10 281.1 281.8 277.8 292.2 4.00 1 1004 149 8.4 -0.6 53 9.0 4.4 298 15 281.2 281.9 277.4 291.4 3.64 2 1000 179 8.0 -1.0 53 9.0 4.1 300 18 281.1 281.8 277.2 291.1 3.55 3 925 816 2.8 -2.1 70 4.9 0.7 320 32 282.2 282.8 277.7 292.1 3.54 4 917 886 2.0 -2.4 73 4.4 0.2 324 33 282.1 282.7 277.6 291.9 3.49 5 907 975 1.4 -2.7 74 4.1 -0.3 328 35 282.3 282.9 277.7 292.1 3.45 6 884 1182 0.8 -5.2 64 6.0 -1.6 338 40 283.8 284.3 277.7 292.2 2.93 7 873 1282 1.4 -6.6 55 8.0 -1.7 340 41 285.4 285.9 278.2 293.1 2.67 8 854 1459 0.4 -7.6 55 8.0 -2.6 340 42 286.2 286.6 278.4 293.5 2.52 9 850 1497 0.2 -7.8 55 8.0 -2.8 340 42 286.4 286.8 278.4 293.6 2.50 10 847 1525 0.0 -7.0 59 7.0 -2.6 345 44 286.4 286.9 278.7 294.2 2.67 11 831 1678 1.0 -9.0 47 10.0 -2.7 348 42 289.1 289.5 279.5 295.9 2.32 12 807 1913 -0.3 -9.3 51 9.0 -3.6 346 41 290.1 290.5 280.0 297.0 2.34 13 799 1993 0.0 -11.0 43 11.0 -3.9 342 41 291.3 291.6 280.2 297.4 2.06 14 785 2135 1.6 -13.4 32 15.0 -3.6 335 41 294.4 294.8 281.2 299.7 1.73 15 779 2197 1.2 -13.8 32 15.0 -3.9 336 40 294.7 295.0 281.3 299.8 1.69 16 761 2384 0.2 -13.8 34 14.0 -4.6 339 39 295.6 295.9 281.7 300.9 1.73 17 726 2760 -1.7 -18.7 26 17.0 -6.8 320 38 297.5 297.7 281.9 301.3 1.20 18 720 2827 -1.3 -27.3 12 26.0 -7.7 319 39 298.6 298.7 281.5 300.5 0.57 19 715 2882 0.2 -45.8 2 46.0 -7.6 318 39 300.9 300.9 281.8 301.2 0.09 20 700 3052 -0.3 315 40 302.2 21 652 3619 -1.9 314 41 306.5 22 549 4961 -12.1 -51.1 2 39.0 -16.9 300 53 309.9 309.9 285.4 310.1 0.06 23 500 5670 -17.1 -55.1 2 38.0 -20.8 295 59 312.2 312.2 286.2 312.4 0.04 24 486 5882 -18.5 -57.5 2 39.0 -22.0 294 61 313.0 313.0 286.4 313.1 0.03 25 484 5913 -18.5 -58.5 2 40.0 -22.0 293 62 313.4 313.4 286.6 313.5 0.03 26 482 5943 -18.5 -58.5 2 40.0 -22.0 293 64 313.8 313.8 286.7 313.9 0.03 27 475 6052 -18.3 -60.3 1 42.0 -22.0 291 69 315.3 315.3 287.2 315.4 0.02 28 449 6469 -21.3 -52.3 4 31.0 -24.3 290 78 316.7 316.7 287.7 316.9 0.07 29 438 6651 -22.5 -43.5 13 21.0 -25.0 290 81 317.4 317.4 288.1 318.1 0.19 30 431 6769 -23.1 -48.1 8 25.0 -25.7 290 82 318.1 318.1 288.3 318.5 0.11 31 400 7310 -27.7 -46.7 15 19.0 -29.5 290 82 319.0 319.0 288.6 319.5 0.14 32 394 7418 -28.7 -46.7 16 18.0 -30.3 292 83 319.1 319.1 288.6 319.6 0.15 33 390 7491 -28.7 -47.7 14 19.0 -30.4 293 84 320.0 320.0 288.9 320.5 0.13 34 345 8351 -36.5 -49.5 25 13.0 -37.4 293 89 320.8 320.9 289.2 321.3 0.12 35 334 8573 -38.5 -51.5 24 13.0 -39.2 292 90 321.1 321.1 289.2 321.5 0.10 36 321 8844 -40.3 -57.3 15 17.0 -41.0 291 91 322.3 322.3 289.5 322.5 0.05 37 300 9300 -44.1 -57.1 22 13.0 -44.6 285 93 323.2 323.2 289.8 323.4 0.06 38 291 9504 -45.7 -52.7 45 7.0 -46.0 285 95 323.8 323.8 290.0 324.1 0.10 39 290 9527 -45.9 -53.9 40 8.0 -46.2 285 96 323.8 323.8 290.0 324.1 0.09 40 289 9550 -46.1 -49.6 68 3.5 -46.3 285 96 323.8 323.8 290.1 324.4 0.14 41 287 9596 -46.5 -50.7 62 4.2 -46.7 285 96 323.9 323.9 290.1 324.4 0.13 42 285 9643 -46.5 -49.9 68 3.4 -46.7 285 97 324.5 324.6 290.3 325.1 0.14 43 282 9713 -47.1 -51.8 59 4.7 -47.3 285 98 324.7 324.7 290.3 325.1 0.11 44 271 9975 -49.3 -54.1 57 4.8 -49.5 285 101 325.2 325.2 290.5 325.5 0.09 45 259 10271 -51.7 -56.7 55 5.0 -51.8 285 104 325.9 325.9 290.6 326.2 0.07 46 256 10347 -52.5 -57.4 55 4.9 -52.6 285 105 325.8 325.8 290.6 326.1 0.06 47 254 10398 -52.7 -56.1 66 3.4 -52.8 285 106 326.2 326.2 290.7 326.5 0.08 48 252 10449 -53.1 -57.9 56 4.8 -53.2 285 106 326.4 326.4 290.7 326.6 0.06 49 250 10500 -53.5 -57.5 62 4.0 -53.6 285 107 326.5 326.5 290.8 326.8 0.06 50 242 10708 -55.3 -58.9 64 3.6 -55.4 286 108 326.9 326.9 290.9 327.1 0.06 51 239 10788 -55.9 -60.2 58 4.3 -56.0 287 108 327.1 327.2 291.0 327.3 0.05 52 236 10868 -56.5 -64.5 36 8.0 -56.6 289 108 327.4 327.4 291.0 327.5 0.03 53 230 11031 -57.5 -64.5 41 7.0 -57.6 292 108 328.3 328.3 291.3 328.4 0.03 54 224 11198 -58.1 -68.1 27 10.0 -58.2 295 109 329.9 329.9 291.7 330.0 0.02 55 218 11369 -58.7 -69.7 23 11.0 -58.8 299 109 331.5 331.5 292.2 331.6 0.01 56 216 11427 -59.0 -70.0 23 11.0 -59.2 300 109 331.9 331.9 292.3 332.0 0.01 57 213 11514 -59.5 -70.5 23 11.0 -59.6 300 106 332.5 332.5 292.4 332.6 0.01 58 200 11910 -57.9 -75.9 8 18.0 -58.1 285 90 341.1 341.1 294.6 341.1 0.01 59 150 13730 -55.7 -84.7 1 29.0 -56.1 295 37 374.1 374.1 301.3 374.1 0.00 60 100 16270 -60.3 -88.3 1 28.0 -60.6 300 46 411.2 411.2 306.7 411.2 0.00 61 93 16725 -57.7 -87.7 1 30.0 -58.1 296 49 425.0 425.0 308.3 425.0 0.00 62 88 17073 -57.9 -87.9 1 30.0 -58.3 290 53 431.3 431.3 309.0 431.4 0.00 63 84 17369 -54.1 -87.1 1 33.0 -54.8 305 41 444.8 444.8 310.4 444.8 0.00 64 76 18004 -58.5 -87.5 1 29.0 -59.0 270 12 448.6 448.6 310.7 448.6 0.00 65 74 18172 -57.9 -87.9 1 30.0 -58.4 267 15 453.3 453.3 311.1 453.3 0.00 66 70 18520 -60.7 -88.7 1 28.0 -61.1 300 26 454.5 454.5 311.3 454.5 0.00 67 68 18700 -61.9 -88.9 2 27.0 -62.3 298 25 455.7 455.7 311.4 455.7 0.00 68 66 18886 -60.9 -88.9 1 28.0 -61.3 295 30 461.8 461.8 312.0 461.8 0.00 69 63 19175 -62.1 -89.1 2 27.0 -62.4 318 27 465.3 465.3 312.3 465.4 0.00 70 61 19375 -60.5 -89.5 1 29.0 -61.0 317 25 473.2 473.2 312.9 473.2 0.00 71 55 20017 -63.3 -90.3 1 27.0 -63.7 257 15 481.0 481.0 313.5 481.0 0.00 72 54 20130 -62.7 -90.7 1 28.0 -63.1 260 17 484.9 484.9 313.8 484.9 0.00 73 53 20246 -60.1 -90.1 1 30.0 -60.6 264 20 493.6 493.6 314.5 493.6 0.00 74 50 20610 -60.1 -89.1 1 29.0 -60.7 300 12 501.9 501.9 315.1 501.9 0.00 75 47 20994 -60.7 -89.7 1 29.0 -61.3 318 14 509.4 509.4 315.6 509.4 0.00 76 45 21265 -59.3 -89.3 1 30.0 -60.0 312 18 519.1 519.1 316.2 519.2 0.00 77 43 21549 -60.3 -89.3 1 29.0 -60.9 308 17 523.5 523.5 316.5 523.5 0.00 78 42 21696 -58.5 -89.5 1 31.0 -59.3 307 15 531.5 531.5 317.0 531.5 0.00 79 41 21847 -58.9 -88.9 1 30.0 -59.7 306 14 534.2 534.2 317.2 534.2 0.00 80 39 22161 -57.1 -89.1 1 32.0 -58.1 320 11 546.4 546.4 317.9 546.4 0.00 81 37 22492 -58.5 -88.5 1 30.0 -59.4 333 10 551.1 551.1 318.2 551.1 0.00 82 35 22843 -56.3 -88.3 1 32.0 -57.5 345 10 565.7 565.7 318.9 565.7 0.00 83 35 22843 -56.9 -88.9 1 32.0 -58.0 345 10 564.1 564.1 318.9 564.1 0.00 84 30 23820 -55.7 -88.7 1 33.0 -57.2 330 4 592.8 592.8 320.3 592.8 0.00 85 28 24261 -54.9 -87.9 1 33.0 -56.6 350 8 606.8 606.8 320.9 606.9 0.01 86 26 24736 -54.9 -87.9 1 33.0 -56.7 6 11 619.8 619.8 321.5 619.9 0.01 87 22 25802 -56.7 -88.7 1 32.0 -58.4 48 10 644.8 644.8 322.5 644.8 0.01 88 21 26098 -56.1 -88.1 1 32.0 -58.0 118 8 655.2 655.3 322.9 655.3 0.01 89 20 26410 -53.9 -87.9 1 34.0 -56.3 220 4 671.2 671.2 323.4 671.2 0.01 90 19 26740 -51.5 -86.5 1 35.0 -54.7 238 5 688.6 688.6 324.0 688.6 0.01 91 16 27861 -48.5 -85.5 1 37.0 -53.1 289 6 733.0 733.0 325.4 733.2 0.02 92 15 28285 -49.1 -85.1 1 36.0 -53.7 302 5 744.7 744.7 325.8 744.9 0.02 93 12 29750 -48.3 -85.3 1 37.0 -53.9 347 1 796.6 796.6 327.1 796.8 0.02 94 11 30325 -45.9 -84.9 0 39.0 -52.8 325 1 825.4 825.4 327.8 825.6 0.03 95 10 30960 -44.9 -84.9 0 40.0 -52.7 185 5 851.9 852.0 328.4 852.2 0.03 96 9.7 31164 -43.1 -83.1 0 40.0 -51.9 866.2 866.2 328.7 866.6 0.04 97 8.6 31977 -42.1 -83.1 0 41.0 -52.0 900.4 900.4 329.4 900.9 0.05 TRP 213 11514 -59.5 -70.5 23 11.0 -59.6 300 106 332.5 332.5 292.4 332.6 0.01 WND 216 11427 -59.0 -70.0 23 11.0 -59.2 300 109 331.9 331.9 292.3 332.0 0.01 Sounding variables and indices 1000-500 mb thick: 5491.00 m Freezing level: 812.54 mb = 1859.10 m = 6099.34 ft Freezing level: 799.00 mb = 1993.07 m = 6538.86 ft Freezing level: 757.32 mb = 2424.07 m = 7952.88 ft Freezing level: 715.67 mb = 2874.83 m = 9431.75 ft Freezing level: 709.00 mb = 2950.15 m = 9678.87 ft Wetbulb zero: 912.83 mb = 923.05 m = 3028.35 ft Precipitable water: 0.33 inches Sfc-500 mean rel hum: 39.61 % Est. max temperature: 13.65 C = 56.56 F Sfc-Lift cond lev (LCL): 894.67 mb = 1084.96 m = 3559.54 ft T: 1.08 C 700-500 lapse rate: 6.42 C/km ThetaE index: 1.14 C Layer 1004.0- 925.0 mb Conv cond level (CCL): 588.03 mb = 4425.04 m = 14517.67 ft Mean mixing ratio: 3.56 g/kg Conv temperature: 36.43 C = 97.57 F Cap Strength: 17.00 C Lifted Index: 17.86 C Risk: None Lifted Index @300 mb: 22.38 C Lifted Index @700 mb: 14.21 C Showalter Index: 16.43 C Risk: None Total Totals Index: 26.60 C Risk: None Vertical Totals Index: 17.30 C Cross Totals Index: 9.30 C K Index: -36.43 Risk: None Sweat Index: 143.00 Risk: None Energy Index: 4.11 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 1.91 J/kg Max Up Vert Vel: 1.95 m/s Conv Inhibition (B-): 62859.36 J/kg Cap Strength: 17.81 C Lift Cond Lev (LCL): 864.45 mb = 1361.51 m = 4466.84 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 344 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 1011 98 295 10 9.1 -4.2 | 181 27 0.2 26.7 1 1000 179 300 18 15.6 -9.0 | 197 23 6.8 21.9 2 985 305 305 24 19.7 -13.8 | 212 20 10.8 17.1 3 949 610 310 29 22.2 -18.6 | 228 18 13.4 12.3 4 925 816 320 32 20.6 -24.5 | 241 13 11.8 6.4 5 914 914 325 34 19.5 -27.9 | 254 11 10.7 3.0 6 880 1219 340 41 14.0 -38.5 | 326 9 5.2 -7.6 7 850 1497 340 42 14.4 -39.5 | 327 10 5.5 -8.6 8 847 1524 345 44 11.4 -42.5 | 348 12 2.6 -11.6 9 816 1829 350 41 7.1 -40.4 | 10 10 -1.7 -9.5 10 785 2134 335 41 17.3 -37.2 | 306 11 8.5 -6.3 11 756 2438 340 38 13.0 -35.7 | 319 6 4.2 -4.8 12 728 2743 320 38 24.4 -29.1 | 263 16 15.6 1.8 13 700 3052 315 40 28.3 -28.3 | 262 20 19.5 2.6 14 673 3353 310 34 26.0 -21.9 | 242 19 17.2 9.0 15 648 3658 315 43 30.4 -30.4 | 269 22 21.6 0.5 16 599 4267 310 44 33.7 -28.3 | 264 25 24.9 2.6 17 554 4877 300 52 45.0 -26.0 | 262 37 36.2 4.9 18 500 5670 295 59 53.5 -24.9 | 262 45 44.7 6.0 19 492 5791 295 57 51.7 -24.1 | 261 43 42.8 6.8 20 472 6096 290 71 66.7 -24.3 | 263 58 57.9 6.6 21 434 6706 290 82 77.1 -28.0 | 268 68 68.2 2.9 22 400 7310 290 82 77.1 -28.0 | 268 68 68.2 2.9 23 382 7620 295 86 77.9 -36.3 | 275 69 69.1 -5.4 24 307 9144 290 92 86.5 -31.5 | 270 78 77.6 -0.6 25 300 9300 285 93 89.8 -24.1 | 265 81 81.0 6.8 26 250 10500 285 107 103.4 -27.7 | 268 95 94.5 3.2 27 243 10668 285 108 104.3 -28.0 | 268 96 95.5 2.9 28 216 11427 300 109 94.4 -54.5 | 285 89 85.6 -23.6 29 213 11514 300 106 91.8 -53.0 | 285 86 83.0 -22.1 30 211 11582 300 109 94.4 -54.5 | 285 89 85.6 -23.6 31 201 11887 295 87 78.8 -36.8 | 275 70 70.0 -5.9 32 200 11910 285 90 86.9 -23.3 | 264 78 78.1 7.6 33 182 12497 285 94 90.8 -24.3 | 265 82 82.0 6.6 34 158 13411 300 73 63.2 -36.5 | 276 55 54.4 -5.6 35 150 13716 300 35 30.3 -17.5 | 238 25 21.5 13.4 36 150 13730 295 37 33.5 -15.6 | 238 29 24.7 15.3 37 143 14021 290 41 38.5 -14.0 | 240 34 29.7 16.9 38 130 14630 280 28 27.6 -4.9 | 216 32 18.8 26.0 39 124 14935 260 27 26.6 4.7 | 207 40 17.8 35.6 40 118 15240 265 30 29.9 2.6 | 212 40 21.1 33.5 41 102 16154 265 44 43.8 3.8 | 225 49 35.0 34.7 42 100 16270 300 46 39.8 -23.0 | 256 32 31.0 7.9 43 97 16459 300 46 39.8 -23.0 | 256 32 31.0 7.9 44 88 17069 290 53 49.8 -18.1 | 253 43 41.0 12.8 45 84 17374 305 41 33.6 -23.5 | 253 26 24.8 7.4 46 76 17983 270 12 12.0 -0.0 | 186 31 3.2 30.9 47 73 18288 265 17 16.9 1.5 | 194 33 8.1 32.4 48 70 18520 300 26 22.5 -13.0 | 217 23 13.7 17.9 49 69 18593 300 22 19.1 -11.0 | 207 22 10.2 19.9 50 66 18898 295 30 27.2 -12.7 | 225 26 18.4 18.2 51 63 19202 320 27 17.4 -20.7 | 220 13 8.5 10.2 52 60 19507 315 23 16.3 -16.3 | 207 16 7.4 14.6 53 57 19812 250 10 9.4 3.4 | 181 34 0.6 34.3 54 52 20422 270 24 24.0 -0.0 | 206 34 15.2 30.9 55 50 20610 300 12 10.4 -6.0 | 184 25 1.6 24.9 56 47 21031 320 14 9.0 -10.7 | 181 20 0.2 20.2 57 45 21336 310 19 14.6 -12.2 | 197 20 5.7 18.7 58 40 21946 305 13 10.6 -7.5 | 184 24 1.8 23.4 59 39 22250 325 10 5.7 -8.2 | 172 23 -3.1 22.7 60 35 22860 345 10 2.6 -9.7 | 164 22 -6.2 21.2 61 33 23165 25 10 -4.2 -9.1 | 149 25 -13.0 21.8 62 30 23774 70 11 -10.3 -3.8 | 145 33 -19.2 27.1 63 30 23820 330 4 2.0 -3.5 | 166 28 -6.8 27.4 64 27 24384 355 9 0.8 -9.0 | 160 23 -8.0 21.9 65 26 24689 360 10 -0.0 -10.0 | 157 23 -8.8 20.9 66 25 24994 40 14 -9.0 -10.7 | 139 27 -17.8 20.2 67 24 25298 50 11 -8.4 -7.1 | 144 29 -17.2 23.8 68 23 25603 35 10 -5.7 -8.2 | 147 27 -14.6 22.7 69 22 25908 55 10 -8.2 -5.7 | 146 30 -17.0 25.2 70 20 26410 220 4 2.6 3.1 | 170 35 -6.2 34.0 71 17 27432 275 7 7.0 -0.6 | 177 30 -1.8 30.3 72 11 30175 0 0 -0.0 -0.0 | 164 32 -8.8 30.9 73 10 30960 185 5 0.4 5.0 | 167 37 -8.4 35.9 Wind Parameters Mean winds (0-6000m): 314.1 at 42.8 knts Storm direction: 344.1 at 32.1 knts Shear (0-3000m) pos: 6.5 neg: 4.0 tot: 10.4 10-3/s Storm rel Dir Shear (0-3000m): 78.7 deg Storm rel helicity (0-3000m) pos: 180.1 neg: -54.5 tot: 125.6 m^2/s^2 ave: 41.9 10^-3 m/s^2 rel: 0.31 Storm rel vorticity (0-3000m) horiz: 13.9 stream: 4.3 10^-3/s Energy-Hel index: 0.00 Bulk Rich Number: 0.03 Bulk Shear: 55.58 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 ------------------------------------------------------------------------------- 500 306 23 209 20| 19.9 0.0 19.9|103.1 0.0 103.1 206.2 0.90| 20.3 18.3 1000 315 28 224 15| 16.0 0.0 16.0|144.9 0.0 144.9 144.9 0.85| 18.9 16.0 1500 326 32 247 10| 13.0 0.0 13.0|169.8 0.0 169.8 113.2 0.87| 16.2 14.1 2000 332 35 268 7| 9.7 1.9 11.6|177.5 -21.4 156.1 78.1 0.59| 15.3 9.0 2500 333 36 277 7| 7.8 2.7 10.4|180.1 -34.6 145.5 58.2 0.43| 14.4 6.2 3000 331 36 274 9| 6.5 4.0 10.4|180.1 -54.5 125.6 41.9 0.31| 13.9 4.3 4000 326 37 269 12| 4.9 3.3 8.2|223.2 -85.3 137.9 34.5 0.28| 12.4 3.5 5000 320 39 268 16| 3.9 4.2 8.1|224.4 -97.3 127.1 25.4 0.23| 11.5 2.7 6000 314 43 267 22| 3.2 5.1 8.3|252.0-110.8 141.2 23.5 0.20| 11.4 2.3 Wrote GIF file: /home/apache/climate/data/raob//KIAD/skewt/KIAD.skewt.20250427.12.gif