UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025042912.upa.cvt Date: 1200Z 29 APR 25 Searching for KIAD... Searching the city database file for: KIAD ... Date:1200Z 29 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 1013 98 11.6 5.6 67 6.0 8.5 170 6 283.7 284.7 281.1 299.4 5.63 1 1000 197 11.8 4.8 62 7.0 8.2 195 14 285.0 285.9 281.4 300.1 5.39 2 997 222 11.8 4.8 62 7.0 8.2 196 16 285.2 286.1 281.5 300.4 5.41 3 981 358 11.2 5.2 67 6.0 8.1 204 23 285.9 286.9 282.1 301.8 5.65 4 973 426 12.0 5.0 62 7.0 8.3 208 25 287.4 288.4 282.7 303.3 5.62 5 967 478 14.0 3.0 47 11.0 8.4 212 27 289.9 290.8 283.0 304.0 4.91 6 964 504 14.6 1.6 41 13.0 8.1 213 27 290.8 291.6 282.8 303.7 4.45 7 959 548 15.4 1.4 39 14.0 8.3 216 28 292.0 292.8 283.4 304.9 4.41 8 944 682 16.0 1.0 36 15.0 8.4 225 27 294.0 294.7 284.1 306.7 4.35 9 935 764 16.2 3.2 42 13.0 9.3 229 24 295.0 295.9 285.3 310.0 5.15 10 925 855 16.0 3.0 42 13.0 9.1 235 20 295.7 296.6 285.6 310.7 5.13 11 908 1012 15.4 2.4 42 13.0 8.6 251 20 296.6 297.5 285.8 311.4 5.01 12 894 1144 16.6 3.6 42 13.0 9.5 266 21 299.2 300.2 287.3 315.7 5.54 13 880 1279 16.2 5.2 48 11.0 10.0 272 19 300.1 301.3 288.3 318.9 6.31 14 874 1337 16.2 3.2 42 13.0 9.1 269 18 300.7 301.7 287.8 317.2 5.51 15 850 1573 14.6 1.6 41 13.0 7.7 265 13 301.4 302.4 287.6 316.6 5.05 16 761 2494 6.2 1.2 70 5.0 3.6 278 16 302.0 303.1 288.3 318.6 5.49 17 758 2527 5.8 3.5 85 2.3 4.5 277 15 302.0 303.1 289.2 321.4 6.50 18 737 2756 3.8 2.6 92 1.2 3.2 270 13 302.2 303.4 289.0 321.0 6.27 19 727 2867 3.6 -0.1 77 3.7 1.7 262 13 303.2 304.1 288.4 319.0 5.23 20 720 2946 3.0 -1.1 74 4.1 1.0 257 14 303.4 304.3 288.2 318.2 4.90 21 718 2968 2.8 -1.3 74 4.1 0.8 255 14 303.4 304.3 288.1 318.1 4.85 22 717 2980 2.8 -1.9 71 4.7 0.5 255 14 303.5 304.4 287.9 317.6 4.64 23 715 3002 3.0 -4.0 60 7.0 -0.2 253 14 304.0 304.7 287.5 316.2 3.98 24 711 3048 2.8 -6.2 52 9.0 -1.2 250 14 304.2 304.9 287.0 314.7 3.38 25 700 3174 2.0 -5.0 60 7.0 -1.2 255 11 304.7 305.4 287.5 316.3 3.76 26 682 3383 0.0 -4.9 70 4.9 -2.2 272 12 304.7 305.5 287.7 316.7 3.89 27 670 3525 -0.5 -9.5 51 9.0 -4.1 283 13 305.7 306.3 286.9 314.4 2.77 28 666 3573 0.0 -14.0 34 14.0 -5.1 287 13 306.8 307.2 286.4 313.0 1.94 29 654 3718 0.4 -18.6 22 19.0 -5.9 294 14 308.9 309.1 286.5 313.3 1.35 30 630 4016 -2.1 -19.1 26 17.0 -7.5 293 13 309.3 309.6 286.6 313.8 1.34 31 618 4169 -2.9 -20.9 24 18.0 -8.4 306 10 310.1 310.4 286.8 314.0 1.17 32 614 4220 -2.9 -24.9 16 22.0 -9.0 310 9 310.7 310.9 286.6 313.5 0.83 33 585 4602 -4.5 -33.5 8 29.0 -10.9 320 14 313.2 313.2 286.9 314.5 0.39 34 572 4778 -5.9 -29.9 13 24.0 -11.6 314 15 313.5 313.7 287.2 315.5 0.56 35 562 4916 -6.5 -38.5 6 32.0 -12.6 312 16 314.4 314.5 287.2 315.3 0.24 36 534 5314 -8.7 -34.7 10 26.0 -14.0 327 13 316.4 316.5 288.0 317.8 0.38 37 526 5430 -9.5 -28.5 20 19.0 -14.0 319 12 316.8 317.0 288.5 319.3 0.69 38 525 5445 -9.5 -29.5 18 20.0 -14.2 318 12 317.0 317.1 288.5 319.2 0.63 39 504 5759 -11.5 -39.5 8 28.0 -16.4 337 16 318.3 318.3 288.5 319.2 0.25 40 500 5820 -11.9 -38.9 9 27.0 -16.7 340 18 318.5 318.6 288.6 319.5 0.26 41 472 6259 -15.5 -40.5 10 25.0 -19.4 327 17 319.4 319.4 288.8 320.2 0.24 42 462 6421 -17.1 -35.1 19 18.0 -20.3 310 17 319.3 319.4 289.0 320.8 0.42 43 460 6453 -17.1 -37.1 16 20.0 -20.5 310 17 319.7 319.8 289.0 321.0 0.34 44 452 6585 -17.9 -31.9 28 14.0 -20.6 310 17 320.3 320.4 289.5 322.4 0.58 45 445 6702 -18.5 -37.5 17 19.0 -21.6 310 16 321.0 321.1 289.5 322.3 0.34 46 439 6803 -19.1 -36.1 21 17.0 -22.0 310 16 321.5 321.6 289.6 323.0 0.40 47 429 6975 -20.1 -43.1 11 23.0 -23.2 310 16 322.3 322.4 289.7 323.1 0.20 48 405 7399 -23.7 -50.7 6 27.0 -26.3 301 16 323.0 323.1 289.8 323.4 0.09 49 400 7490 -24.1 -48.1 9 24.0 -26.6 290 17 323.7 323.7 290.0 324.1 0.12 50 398 7526 -24.1 -48.1 9 24.0 -26.6 289 17 324.1 324.2 290.2 324.6 0.12 51 381 7842 -27.1 -47.1 13 20.0 -29.1 286 19 324.2 324.3 290.2 324.8 0.14 52 300 9510 -41.5 -57.5 16 16.0 -42.2 290 26 326.9 326.9 290.9 327.1 0.05 53 295 9624 -42.5 -57.5 18 15.0 -43.1 293 26 327.0 327.0 290.9 327.2 0.05 54 293 9670 -42.7 -56.7 20 14.0 -43.3 294 26 327.4 327.4 291.0 327.6 0.06 55 291 9716 -43.3 -50.3 46 7.0 -43.7 295 26 327.2 327.2 291.0 327.7 0.13 56 250 10720 -51.1 -57.1 49 6.0 -51.3 305 29 330.1 330.1 291.8 330.4 0.07 57 200 12140 -61.9 -69.9 34 8.0 -62.0 310 33 334.7 334.7 293.0 334.8 0.02 58 158 13561 -70.5 -73.8 62 3.3 -70.5 315 32 343.5 343.5 295.1 343.6 0.01 59 150 13870 -68.5 -79.5 19 11.0 -68.5 325 33 352.1 352.1 297.1 352.1 0.00 60 100 16370 -63.5 -86.5 3 23.0 -63.7 325 19 405.0 405.0 305.9 405.0 0.00 61 87 17227 -61.9 -85.9 3 24.0 -62.1 309 29 424.7 424.7 308.3 424.7 0.00 62 84 17443 -63.3 -86.3 3 23.0 -63.6 314 28 426.2 426.2 308.4 426.2 0.00 63 81 17666 -62.5 -86.5 3 24.0 -62.8 320 28 432.2 432.3 309.1 432.3 0.00 64 71 18473 -64.9 -87.9 3 23.0 -65.1 327 38 443.7 443.7 310.3 443.7 0.00 65 70 18560 -63.7 -87.7 2 24.0 -64.0 330 39 448.1 448.1 310.7 448.1 0.00 66 67 18829 -64.7 -87.7 3 23.0 -65.0 322 39 451.6 451.6 311.0 451.6 0.00 67 64 19111 -62.1 -87.1 2 25.0 -62.4 324 34 463.3 463.3 312.1 463.3 0.00 68 55 20048 -63.3 -87.3 2 24.0 -63.7 350 21 481.0 481.0 313.5 481.0 0.00 69 51 20517 -60.5 -86.5 2 26.0 -61.0 356 16 498.1 498.1 314.8 498.1 0.00 70 50 20640 -61.3 -86.3 2 25.0 -61.8 10 12 499.0 499.0 314.9 499.1 0.00 71 49 20765 -61.5 -86.5 2 25.0 -62.0 10 12 501.4 501.4 315.1 501.5 0.00 72 45 21293 -59.3 -86.3 2 27.0 -60.0 317 12 519.1 519.1 316.2 519.2 0.01 73 38 22348 -58.7 -85.7 2 27.0 -59.6 343 20 546.4 546.4 317.9 546.4 0.01 74 37 22515 -58.7 -85.7 2 27.0 -59.6 357 19 550.6 550.6 318.1 550.6 0.01 75 35 22861 -60.5 -86.5 2 26.0 -61.3 34 19 554.7 554.7 318.3 554.7 0.01 76 34 23042 -58.3 -86.3 2 28.0 -59.3 20 14 565.1 565.1 318.9 565.2 0.01 77 33 23229 -59.1 -86.1 2 27.0 -60.0 20 12 567.8 567.8 319.0 567.9 0.01 78 30 23830 -55.1 -84.1 2 29.0 -56.6 50 11 594.4 594.4 320.3 594.5 0.01 79 28 24273 -54.9 -83.9 2 29.0 -56.6 65 9 606.8 606.8 320.9 606.9 0.01 80 25 24999 -55.5 -84.5 2 29.0 -57.2 6 3 625.1 625.1 321.7 625.2 0.01 81 22 25826 -51.1 -82.1 1 31.0 -54.1 23 11 661.5 661.5 323.1 661.6 0.02 82 20 26450 -49.3 -81.3 1 32.0 -52.9 80 9 685.3 685.3 324.0 685.5 0.03 83 18 27140 -50.3 -82.3 1 32.0 -53.9 103 12 703.1 703.1 324.6 703.3 0.03 84 17 27515 -48.9 -80.9 1 32.0 -53.1 145 6 719.2 719.2 325.0 719.4 0.03 85 16 27911 -50.9 -81.9 1 31.0 -54.6 123 5 725.2 725.2 325.2 725.5 0.03 86 15 28334 -48.7 -81.7 1 33.0 -53.4 100 4 746.0 746.0 325.8 746.3 0.03 87 12 29814 -45.1 -80.1 1 35.0 -52.0 19 1 807.9 808.0 327.4 808.5 0.05 88 10 31040 -42.3 -78.3 1 36.0 -51.3 240 12 861.6 861.7 328.7 862.5 0.09 89 9.6 31316 -42.7 -78.7 1 36.0 -51.7 870.3 870.3 328.8 871.1 0.09 90 8.0 32546 -42.7 -78.7 1 36.0 -52.5 916.8 916.9 329.8 918.0 0.10 91 7.2 33264 -38.5 -76.5 1 38.0 -51.2 962.1 962.2 330.6 964.0 0.16 TRP 158 13561 -70.5 -73.8 62 3.3 -70.5 315 32 343.5 343.5 295.1 343.6 0.01 WND Sounding variables and indices 1000-500 mb thick: 5623.00 m Freezing level: 682.00 mb = 3383.12 m = 11099.34 ft Freezing level: 666.00 mb = 3572.82 m = 11721.72 ft Freezing level: 650.16 mb = 3766.06 m = 12355.67 ft Wetbulb zero: 715.56 mb = 2995.93 m = 9829.06 ft Precipitable water: 0.77 inches Sfc-500 mean rel hum: 39.78 % Est. max temperature: 29.01 C = 84.22 F Sfc-Lift cond lev (LCL): 925.00 mb = 855.02 m = 2805.14 ft T: 16.00 C 700-500 lapse rate: 5.25 C/km ThetaE index: 6.72 C Layer 737.0- 700.0 mb Conv cond level (CCL): 623.06 mb = 4104.22 m = 13465.13 ft Mean mixing ratio: 5.09 g/kg Conv temperature: 37.79 C = 100.02 F Cap Strength: 13.56 C Lifted Index: 13.63 C Risk: None Lifted Index @300 mb: 15.67 C Lifted Index @700 mb: 8.66 C Showalter Index: 6.39 C Risk: None Total Totals Index: 40.00 C Risk: None Vertical Totals Index: 26.50 C Cross Totals Index: 13.50 C K Index: 21.10 Risk: 20-40 % chance of thunderstorms Sweat Index: 63.20 Risk: None Energy Index: 0.68 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 59.31 J/kg Max Up Vert Vel: 10.89 m/s Conv Inhibition (B-): 66637.83 J/kg Cap Strength: 13.43 C Lift Cond Lev (LCL): 819.94 mb = 1872.95 m = 6144.76 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 310 at 12 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 1013 98 170 6 -1.0 5.9 | 144 17 -9.8 13.4 1 1000 197 195 14 3.6 13.5 | 166 22 -5.2 21.0 2 987 305 200 22 7.5 20.7 | 177 28 -1.3 28.1 3 952 610 220 30 19.3 23.0 | 199 32 10.5 30.4 4 925 855 235 20 16.4 11.5 | 202 20 7.6 18.9 5 919 914 240 20 17.3 10.0 | 206 19 8.5 17.5 6 886 1219 275 21 20.9 -1.8 | 245 13 12.1 5.6 7 855 1524 260 12 11.8 2.1 | 198 10 3.0 9.5 8 850 1573 265 13 13.0 1.1 | 206 10 4.2 8.6 9 824 1829 285 13 12.6 -3.4 | 223 6 3.8 4.1 10 794 2134 285 16 15.5 -4.1 | 243 7 6.7 3.3 11 765 2438 280 16 15.8 -2.8 | 236 8 7.0 4.7 12 738 2743 270 13 13.0 -0.0 | 209 9 4.2 7.5 13 711 3048 250 14 13.2 4.8 | 200 13 4.4 12.3 14 700 3174 255 11 10.6 2.8 | 190 10 1.8 10.3 15 658 3658 295 14 12.7 -5.9 | 248 4 3.9 1.5 16 633 3962 290 14 13.2 -4.8 | 238 5 4.4 2.7 17 609 4267 315 8 5.7 -5.7 | 120 4 -3.1 1.8 18 586 4572 320 14 9.0 -10.7 | 356 3 0.2 -3.3 19 564 4877 310 16 12.3 -10.3 | 309 4 3.5 -2.8 20 542 5182 335 14 5.9 -12.7 | 29 6 -2.9 -5.2 21 522 5486 315 12 8.5 -8.5 | 17 1 -0.3 -1.0 22 502 5791 340 17 5.8 -16.0 | 19 9 -3.0 -8.5 23 500 5820 340 18 6.2 -16.9 | 16 10 -2.6 -9.5 24 482 6096 345 17 4.4 -16.4 | 26 10 -4.4 -9.0 25 463 6401 310 17 13.0 -10.9 | 309 5 4.2 -3.5 26 409 7315 310 15 11.5 -9.6 | 309 3 2.7 -2.2 27 400 7490 290 17 16.0 -5.8 | 257 7 7.2 1.6 28 393 7620 285 17 16.4 -4.4 | 248 8 7.6 3.1 29 316 9144 290 28 26.3 -9.6 | 277 18 17.5 -2.1 30 303 9449 285 26 25.1 -6.7 | 267 16 16.3 0.7 31 300 9510 290 26 24.4 -8.9 | 275 16 15.6 -1.4 32 264 10363 310 26 19.9 -16.7 | 310 14 11.1 -9.2 33 250 10720 305 29 23.8 -16.6 | 302 18 15.0 -9.2 34 208 11887 305 28 22.9 -16.1 | 301 17 14.1 -8.6 35 200 12140 310 33 25.3 -21.2 | 310 21 16.5 -13.7 36 189 12497 310 33 25.3 -21.2 | 310 21 16.5 -13.7 37 179 12802 330 27 13.5 -23.4 | 344 17 4.7 -15.9 38 162 13411 315 19 13.4 -13.4 | 322 8 4.6 -6.0 39 158 13561 315 32 22.6 -22.6 | 318 21 13.8 -15.2 40 154 13716 310 28 21.4 -18.0 | 310 16 12.7 -10.5 41 150 13870 325 33 18.9 -27.0 | 333 22 10.1 -19.6 42 146 14021 330 36 18.0 -31.2 | 339 25 9.2 -23.7 43 139 14326 320 39 25.1 -29.9 | 324 28 16.3 -22.4 44 133 14630 335 33 13.9 -29.9 | 347 23 5.2 -22.4 45 120 15240 315 31 21.9 -21.9 | 318 20 13.1 -14.5 46 114 15545 310 30 23.0 -19.3 | 310 18 14.2 -11.8 47 100 16370 325 19 10.9 -15.6 | 345 8 2.1 -8.1 48 99 16459 330 26 13.0 -22.5 | 344 16 4.2 -15.1 49 94 16764 325 19 10.9 -15.6 | 345 8 2.1 -8.1 50 89 17069 305 29 23.8 -16.6 | 302 18 15.0 -9.2 51 81 17678 320 28 18.0 -21.4 | 327 17 9.2 -14.0 52 77 17983 305 31 25.4 -17.8 | 302 20 16.6 -10.3 53 73 18288 320 35 22.5 -26.8 | 325 24 13.7 -19.3 54 70 18560 330 39 19.5 -33.8 | 338 28 10.7 -26.3 55 70 18593 320 44 28.3 -33.7 | 323 33 19.5 -26.2 56 57 19812 330 20 10.0 -17.3 | 353 10 1.2 -9.9 57 54 20117 355 21 1.8 -20.9 | 27 15 -7.0 -13.5 58 52 20422 345 20 5.2 -19.3 | 17 12 -3.6 -11.9 59 50 20640 10 12 -2.1 -11.8 | 68 12 -10.9 -4.4 60 47 21031 10 12 -2.1 -11.8 | 68 12 -10.9 -4.4 61 45 21336 310 12 9.2 -7.7 | 302 0 0.4 -0.3 62 43 21641 335 14 5.9 -12.7 | 29 6 -2.9 -5.2 63 41 21946 345 12 3.1 -11.6 | 54 7 -5.7 -4.1 64 39 22250 335 21 8.9 -19.0 | 360 12 0.1 -11.6 65 37 22555 360 19 -0.0 -19.0 | 37 15 -8.8 -11.5 66 35 22860 35 19 -10.9 -15.6 | 68 21 -19.7 -8.1 67 33 23165 10 11 -1.9 -10.8 | 73 11 -10.7 -3.4 68 32 23470 55 17 -13.9 -9.8 | 84 23 -22.7 -2.3 69 30 23774 55 14 -11.5 -8.0 | 88 20 -20.3 -0.6 70 30 23830 50 11 -8.4 -7.1 | 91 17 -17.2 0.4 71 29 24079 30 12 -6.0 -10.4 | 79 15 -14.8 -2.9 72 28 24384 85 8 -8.0 -0.7 | 112 18 -16.8 6.8 73 26 24689 0 0 -0.0 -0.0 | 130 12 -8.8 7.5 74 21 26213 30 15 -7.5 -13.0 | 71 17 -16.3 -5.5 75 20 26450 80 9 -8.9 -1.6 | 108 19 -17.7 5.9 76 18 27127 100 12 -11.8 2.1 | 115 23 -20.6 9.5 77 17 27432 150 6 -3.0 5.2 | 137 17 -11.8 12.7 78 11 30175 0 0 -0.0 -0.0 | 130 12 -8.8 7.5 79 10 31040 240 12 10.4 6.0 | 187 14 1.6 13.5 Wind Parameters Mean winds (0-6000m): 280.3 at 15.4 knts Storm direction: 310.3 at 11.5 knts Shear (0-3000m) pos: 3.3 neg: 1.5 tot: 4.7 10-3/s Storm rel Dir Shear (0-3000m): 52.9 deg Storm rel helicity (0-3000m) pos: 231.4 neg: -41.3 tot: 190.1 m^2/s^2 ave: 63.4 10^-3 m/s^2 rel: 0.33 Storm rel vorticity (0-3000m) horiz: 13.8 stream: 4.6 10^-3/s Energy-Hel index: 0.09 Bulk Rich Number: 0.91 Bulk Shear: 65.23 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 ------------------------------------------------------------------------------- 500 206 21 181 26| 26.9 0.0 26.9|154.7 0.0 154.7 309.5 0.81| 29.5 24.0 1000 221 22 193 25| 11.1 0.0 11.1|207.7 0.0 207.7 207.7 0.67| 25.5 17.1 1500 234 20 201 21| 5.1 0.0 5.1|224.0 -23.5 200.5 133.7 0.47| 21.9 10.3 2000 243 19 206 18| 4.9 0.0 4.9|231.4 -23.5 207.9 103.9 0.48| 18.1 8.7 2500 251 18 211 16| 3.9 0.6 4.5|231.4 -29.8 201.6 80.6 0.42| 15.2 6.4 3000 252 17 211 15| 3.3 1.5 4.7|231.4 -41.3 190.1 63.4 0.33| 13.8 4.6 4000 259 16 214 13| 3.1 1.1 4.2|243.1 -45.9 197.1 49.3 0.31| 12.3 3.9 5000 269 15 221 10| 3.0 0.9 3.8|248.1 -52.0 196.2 39.2 0.21| 11.6 2.5 6000 280 15 233 8| 2.8 0.8 3.6|255.0 -52.8 202.3 33.7 0.21| 11.0 2.3 Wrote GIF file: /home/apache/climate/data/raob//KIAD/skewt/KIAD.skewt.20250429.12.gif