UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025043012.upa.cvt Date: 1200Z 30 APR 25 Searching for KIAD... Searching the city database file for: KIAD ... Date:1200Z 30 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 18.8 16.4 86 2.4 17.2 190 3 291.5 293.5 290.2 324.6 11.74 1 1000 136 19.8 15.2 75 4.6 16.8 275 5 293.0 294.9 290.0 324.0 10.92 2 995 179 20.6 14.6 68 6.0 16.7 276 8 294.2 296.1 290.1 324.4 10.55 3 991 214 20.6 14.6 68 6.0 16.7 277 11 294.5 296.4 290.2 324.9 10.60 4 985 267 20.6 13.6 64 7.0 16.1 279 15 295.0 296.8 289.9 323.7 9.98 5 925 808 16.0 13.1 83 2.9 14.2 295 27 295.7 297.5 290.4 325.3 10.29 6 913 919 15.2 12.5 84 2.7 13.5 300 26 296.0 297.8 290.2 324.9 10.02 7 907 975 16.0 12.0 77 4.0 13.5 301 26 297.3 299.1 290.5 325.7 9.76 8 890 1136 15.0 10.5 74 4.5 12.3 304 27 297.9 299.5 290.0 324.1 8.99 9 854 1485 12.4 9.1 80 3.3 10.4 301 29 298.7 300.3 289.9 323.7 8.52 10 850 1524 12.4 8.4 77 4.0 10.0 300 29 299.1 300.6 289.7 323.1 8.16 11 826 1764 11.0 7.6 80 3.4 9.0 296 31 300.1 301.6 289.9 323.6 7.95 12 802 2010 10.4 5.4 71 5.0 7.6 292 34 302.0 303.3 289.7 323.0 7.03 13 770 2348 8.0 4.3 77 3.7 5.9 290 37 303.0 304.2 289.8 323.3 6.77 14 708 3037 4.2 -0.7 70 4.9 1.7 285 35 306.1 307.1 289.3 321.9 5.14 15 700 3130 3.4 -0.6 75 4.0 1.4 280 36 306.2 307.2 289.5 322.3 5.23 16 672 3460 0.8 -0.2 93 1.0 0.3 268 32 306.9 308.0 290.0 324.1 5.62 17 662 3581 0.2 -1.8 86 2.0 -0.8 263 30 307.6 308.5 289.8 323.2 5.07 18 647 3765 -1.3 -2.1 94 0.8 -1.7 258 31 307.9 308.9 289.8 323.6 5.07 19 645 3789 -1.3 -2.5 92 1.2 -1.9 258 32 308.2 309.1 289.8 323.4 4.94 20 643 3814 -0.7 -3.0 84 2.3 -1.8 258 32 309.1 310.0 290.0 324.0 4.77 21 631 3965 -1.3 -4.6 78 3.3 -2.9 255 35 310.1 310.9 289.9 323.6 4.31 22 603 4326 -3.9 -5.5 89 1.6 -4.6 251 42 311.2 312.0 290.1 324.4 4.21 23 598 4392 -4.1 -5.9 87 1.8 -4.9 254 41 311.7 312.5 290.2 324.7 4.12 24 593 4458 -3.9 -7.5 76 3.6 -5.5 256 41 312.7 313.4 290.0 324.3 3.67 25 587 4538 -4.5 -7.8 78 3.3 -5.9 258 40 312.9 313.6 290.1 324.4 3.62 26 586 4552 -4.5 -7.6 79 3.1 -5.8 259 40 313.0 313.7 290.2 324.8 3.68 27 584 4579 -4.1 -8.2 73 4.1 -5.8 260 40 313.8 314.5 290.3 325.1 3.53 28 575 4701 -4.3 -9.0 70 4.7 -6.3 264 39 315.0 315.6 290.5 325.8 3.37 29 555 4980 -6.1 -10.7 70 4.6 -7.9 273 37 316.0 316.6 290.6 325.9 3.05 30 550 5051 -6.7 -13.7 57 7.0 -9.3 275 38 316.1 316.6 290.0 324.1 2.41 31 547 5094 -7.1 -13.1 62 6.0 -9.4 277 38 316.2 316.6 290.1 324.5 2.55 32 546 5108 -7.1 -16.1 49 9.0 -10.2 277 38 316.3 316.7 289.6 322.9 1.99 33 537 5238 -8.1 -19.1 41 11.0 -11.6 281 39 316.6 316.9 289.3 321.9 1.57 34 533 5296 -8.7 -18.7 44 10.0 -11.9 283 39 316.6 316.9 289.4 322.1 1.64 35 530 5340 -8.7 -22.7 31 14.0 -12.7 285 39 317.1 317.3 289.0 321.1 1.16 36 519 5502 -9.9 -29.9 18 20.0 -14.5 290 40 317.6 317.7 288.6 319.7 0.62 37 514 5577 -10.3 -22.3 37 12.0 -13.7 286 40 318.0 318.2 289.4 322.2 1.24 38 500 5790 -11.3 -28.3 23 17.0 -15.4 275 41 319.3 319.4 289.3 321.9 0.74 39 493 5897 -12.1 -27.1 28 15.0 -15.8 277 40 319.6 319.7 289.5 322.5 0.84 40 489 5959 -11.9 -27.9 25 16.0 -15.8 278 40 320.6 320.7 289.8 323.3 0.79 41 487 5991 -11.9 -33.9 14 22.0 -16.4 278 40 320.9 321.0 289.5 322.6 0.45 42 484 6038 -11.9 -41.9 6 30.0 -16.9 279 39 321.5 321.5 289.5 322.3 0.20 43 480 6101 -12.1 -43.1 6 31.0 -17.1 280 39 322.0 322.1 289.6 322.7 0.18 44 479 6117 -12.3 -43.3 6 31.0 -17.3 280 39 322.0 322.0 289.6 322.6 0.17 45 472 6228 -12.9 -40.9 8 28.0 -17.6 281 38 322.6 322.6 289.8 323.4 0.23 46 470 6261 -13.1 -32.1 19 19.0 -17.1 281 37 322.7 322.8 290.2 324.7 0.55 47 469 6277 -13.1 -33.1 17 20.0 -17.3 281 37 322.9 323.0 290.2 324.7 0.50 48 463 6374 -13.9 -28.9 27 15.0 -17.4 282 36 323.1 323.3 290.5 325.8 0.76 49 425 7015 -19.1 -35.1 23 16.0 -22.0 295 39 324.5 324.6 290.6 326.2 0.45 50 407 7333 -22.1 -34.1 33 12.0 -24.2 295 46 324.7 324.8 290.7 326.6 0.52 51 401 7442 -23.1 -31.1 48 8.0 -24.6 295 49 324.7 324.9 290.9 327.3 0.71 52 400 7460 -23.1 -31.1 48 8.0 -24.6 295 49 325.0 325.1 291.0 327.5 0.71 53 377 7892 -27.1 -31.5 66 4.4 -27.9 293 46 325.2 325.4 291.1 327.9 0.73 54 363 8165 -29.3 -33.6 66 4.3 -30.0 291 41 325.8 326.0 291.2 328.1 0.62 55 300 9500 -40.3 -44.0 68 3.7 -40.6 270 48 328.6 328.6 291.6 329.5 0.26 56 250 10720 -48.9 -57.9 34 9.0 -49.2 265 51 333.4 333.4 292.7 333.6 0.06 57 200 12140 -61.5 -65.4 60 3.9 -61.6 270 60 335.4 335.4 293.2 335.5 0.03 58 175 12956 -67.8 -72.3 53 4.5 -67.8 280 67 338.0 338.0 293.9 338.1 0.01 59 171 13095 -68.9 -73.5 51 4.6 -68.9 285 63 338.5 338.5 294.0 338.5 0.01 60 150 13880 -68.3 -75.3 36 7.0 -68.4 275 39 352.4 352.4 297.1 352.5 0.01 61 100 16380 -63.5 -86.5 3 23.0 -63.7 300 25 405.0 405.0 305.9 405.0 0.00 62 96 16630 -62.5 -86.5 3 24.0 -62.7 304 28 411.7 411.7 306.7 411.8 0.00 63 87 17232 -63.9 -86.9 3 23.0 -64.1 290 36 420.7 420.7 307.8 420.7 0.00 64 84 17447 -60.9 -86.9 2 26.0 -61.2 298 34 431.0 431.0 309.0 431.0 0.00 65 70 18570 -62.9 -86.9 3 24.0 -63.2 325 23 449.8 449.8 310.8 449.8 0.00 66 63 19217 -65.1 -88.1 3 23.0 -65.3 334 23 458.7 458.7 311.7 458.7 0.00 67 59 19621 -62.7 -86.7 3 24.0 -63.0 338 22 472.8 472.8 312.9 472.8 0.00 68 51 20518 -64.1 -88.1 2 24.0 -64.4 347 17 489.6 489.7 314.2 489.7 0.00 69 50 20640 -63.3 -88.3 2 25.0 -63.7 350 18 494.3 494.3 314.5 494.3 0.00 70 46 21154 -61.7 -86.7 2 25.0 -62.2 357 17 510.1 510.1 315.7 510.1 0.00 71 45 21290 -62.3 -87.3 2 25.0 -62.8 359 15 511.9 511.9 315.8 511.9 0.00 72 41 21864 -62.3 -87.3 2 25.0 -62.8 8 3 525.7 525.7 316.6 525.7 0.00 73 37 22503 -58.7 -85.7 2 27.0 -59.6 37 10 550.6 550.6 318.1 550.6 0.01 74 33 23220 -59.3 -86.3 2 27.0 -60.2 60 15 567.3 567.3 319.0 567.3 0.01 75 30 23820 -57.1 -85.1 2 28.0 -58.3 25 9 589.0 589.0 320.1 589.0 0.01 76 28 24260 -55.3 -84.3 2 29.0 -56.9 25 9 605.7 605.7 320.9 605.8 0.01 77 25 24985 -55.7 -84.7 1 29.0 -57.4 57 12 624.5 624.5 321.7 624.6 0.01 78 20 26420 -52.5 -83.5 1 31.0 -55.3 45 11 675.5 675.5 323.6 675.6 0.02 79 19 26751 -52.1 -83.1 1 31.0 -55.1 43 8 686.7 686.7 324.0 686.9 0.02 80 19 26751 -52.1 -83.1 1 31.0 -55.1 43 8 686.7 686.7 324.0 686.9 0.02 81 18 27103 -50.3 -82.3 1 32.0 -53.9 47 11 703.1 703.1 324.6 703.3 0.03 82 17 27474 -52.1 -83.1 1 31.0 -55.4 53 13 708.9 708.9 324.7 709.1 0.02 83 15 28291 -47.9 -81.9 1 34.0 -52.9 103 13 748.7 748.7 325.9 749.0 0.03 84 12 29773 -44.7 -79.7 1 35.0 -51.8 237 15 809.4 809.4 327.5 809.9 0.06 85 10 30990 -45.5 -80.5 1 35.0 -52.9 270 3 849.7 849.7 328.4 850.3 0.06 86 9.4 31404 -44.5 -80.5 1 36.0 -52.7 267 4 868.7 868.7 328.8 869.3 0.07 87 8.8 31850 -41.3 -79.3 1 38.0 -51.4 263 6 897.6 897.7 329.4 898.5 0.08 88 7.6 32848 -40.9 -78.9 1 38.0 -52.0 255 9 937.7 937.7 330.1 938.8 0.10 89 7.0 33410 -39.3 -78.3 1 39.0 -51.7 250 11 966.6 966.7 330.7 968.0 0.12 90 6.8 33609 -38.1 -78.1 1 40.0 -51.4 979.6 979.7 330.9 981.2 0.13 TRP 171 13095 -68.9 -73.5 51 4.6 -68.9 285 63 338.5 338.5 294.0 338.5 0.01 WND 175 12956 -67.8 -72.3 53 4.5 -67.8 280 67 338.0 338.0 293.9 338.1 0.01 Sounding variables and indices 1000-500 mb thick: 5654.00 m Freezing level: 660.00 mb = 3605.38 m = 11828.54 ft Wetbulb zero: 669.39 mb = 3491.66 m = 11455.44 ft Precipitable water: 1.34 inches Sfc-500 mean rel hum: 71.58 % Est. max temperature: 26.05 C = 78.89 F Sfc-Lift cond lev (LCL): 971.03 mb = 390.06 m = 1279.71 ft T: 19.55 C 700-500 lapse rate: 5.53 C/km ThetaE index: 2.56 C Layer 890.0- 826.0 mb Conv cond level (CCL): 833.69 mb = 1686.36 m = 5532.61 ft Mean mixing ratio: 10.24 g/kg Conv temperature: 27.16 C = 80.89 F Cap Strength: 2.61 C Lifted Index: 2.60 C Risk: None Lifted Index @300 mb: 3.45 C Lifted Index @700 mb: 1.10 C Showalter Index: 3.39 C Risk: None Total Totals Index: 43.40 C Risk: None Vertical Totals Index: 23.70 C Cross Totals Index: 19.70 C K Index: 28.10 Risk: 40-60 % chance of thunderstorms Sweat Index: 199.80 Risk: None Energy Index: -0.19 Risk: Scattered severe thunderstorms Parcel Indices Parcel: using 100 mb layer CAPE (B+): 7.79 J/kg Max Up Vert Vel: 3.95 m/s Conv Inhibition (B-): 52939.20 J/kg Cap Strength: 2.61 C Lift Cond Lev (LCL): 891.52 mb = 1121.39 m = 3679.05 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 310 at 25 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 98 190 3 0.5 3.0 | 135 27 -18.9 18.9 1 1000 136 275 5 5.0 -0.4 | 137 21 -14.4 15.5 2 981 305 280 18 17.7 -3.1 | 173 13 -1.6 12.9 3 947 610 295 25 22.7 -10.6 | 211 6 3.3 5.4 4 925 808 295 27 24.5 -11.4 | 228 7 5.1 4.6 5 913 914 300 26 22.5 -13.0 | 227 4 3.1 3.0 6 881 1219 305 27 22.1 -15.5 | 260 3 2.7 0.5 7 850 1524 300 29 25.1 -14.5 | 256 6 5.7 1.5 8 819 1829 295 32 29.0 -13.5 | 256 10 9.6 2.5 9 790 2134 290 36 33.8 -12.3 | 256 15 14.5 3.7 10 761 2438 290 37 34.8 -12.7 | 258 16 15.4 3.3 11 734 2743 290 37 34.8 -12.7 | 258 16 15.4 3.3 12 707 3048 285 35 33.8 -9.1 | 244 16 14.4 6.9 13 700 3130 280 36 35.5 -6.3 | 239 19 16.1 9.7 14 655 3658 260 29 28.6 5.0 | 204 23 9.2 21.0 15 606 4267 250 42 39.5 14.4 | 214 36 20.1 30.3 16 561 4877 270 37 37.0 -0.0 | 228 24 17.6 16.0 17 520 5486 290 40 37.6 -13.7 | 263 18 18.2 2.3 18 500 5790 275 41 40.8 -3.6 | 240 25 21.5 12.4 19 480 6096 280 39 38.4 -6.8 | 244 21 19.0 9.2 20 442 6706 285 33 31.9 -8.5 | 239 15 12.5 7.4 21 425 7010 295 39 35.3 -16.5 | 272 16 16.0 -0.5 22 400 7460 295 49 44.4 -20.7 | 281 25 25.0 -4.7 23 391 7620 295 50 45.3 -21.1 | 281 26 25.9 -5.2 24 359 8230 290 40 37.6 -13.7 | 263 18 18.2 2.3 25 315 9144 285 49 47.3 -12.7 | 263 28 28.0 3.3 26 300 9500 270 48 48.0 -0.0 | 241 33 28.6 16.0 27 276 10058 265 48 47.8 4.2 | 235 35 28.4 20.2 28 250 10720 265 51 50.8 4.4 | 237 37 31.4 20.4 29 208 11887 260 56 55.1 9.7 | 234 44 35.8 25.7 30 200 12140 270 60 60.0 -0.0 | 249 44 40.6 16.0 31 175 12956 280 67 66.0 -11.6 | 265 47 46.6 4.3 32 171 13095 285 63 60.9 -16.3 | 270 41 41.5 -0.3 33 171 13106 280 67 66.0 -11.6 | 265 47 46.6 4.3 34 154 13716 285 41 39.6 -10.6 | 255 21 20.2 5.4 35 150 13880 275 39 38.9 -3.4 | 237 23 19.5 12.6 36 147 14021 275 38 37.9 -3.3 | 236 22 18.5 12.7 37 140 14326 295 40 36.3 -16.9 | 273 17 16.9 -0.9 38 126 14935 290 26 24.4 -8.9 | 216 9 5.1 7.1 39 120 15240 295 27 24.5 -11.4 | 228 7 5.1 4.6 40 104 16154 285 39 37.7 -10.1 | 252 19 18.3 5.9 41 100 16380 300 25 21.7 -12.5 | 213 4 2.3 3.5 42 99 16459 310 32 24.5 -20.6 | 312 7 5.1 -4.6 43 94 16764 300 25 21.7 -12.5 | 213 4 2.3 3.5 44 89 17069 285 34 32.8 -8.8 | 242 15 13.5 7.2 45 85 17374 295 37 33.5 -15.6 | 269 14 14.2 0.3 46 77 17983 320 17 10.9 -13.0 | 109 9 -8.4 3.0 47 73 18288 305 17 13.9 -9.8 | 139 8 -5.4 6.2 48 70 18570 325 23 13.2 -18.8 | 65 7 -6.2 -2.9 49 70 18593 295 22 19.9 -9.3 | 185 7 0.6 6.7 50 66 18898 330 24 12.0 -20.8 | 57 9 -7.4 -4.8 51 63 19202 335 23 9.7 -20.8 | 63 11 -9.7 -4.9 52 60 19507 315 22 15.6 -15.6 | 96 4 -3.8 0.4 53 57 19812 15 21 -5.4 -20.3 | 80 25 -24.8 -4.3 54 54 20117 340 10 3.4 -9.4 | 112 17 -16.0 6.6 55 52 20422 345 16 4.1 -15.5 | 92 15 -15.2 0.5 56 50 20640 350 18 3.1 -17.7 | 84 16 -16.2 -1.7 57 49 20726 330 17 8.5 -14.7 | 97 11 -10.9 1.3 58 47 21031 355 18 1.6 -17.9 | 84 18 -17.8 -2.0 59 45 21336 360 15 -0.0 -15.0 | 93 19 -19.4 1.0 60 43 21641 35 13 -7.5 -10.6 | 101 27 -26.8 5.3 61 41 21946 0 0 -0.0 -0.0 | 130 25 -19.4 16.0 62 39 22250 15 10 -2.6 -9.7 | 106 23 -22.0 6.3 63 37 22555 40 10 -6.4 -7.7 | 108 27 -25.8 8.3 64 35 22860 25 10 -4.2 -9.1 | 106 25 -23.6 6.9 65 33 23165 55 16 -13.1 -9.2 | 102 33 -32.5 6.8 66 30 23774 100 10 -9.8 1.7 | 121 34 -29.2 17.7 67 30 23820 25 9 -3.8 -8.2 | 109 24 -23.2 7.8 68 29 24079 25 10 -4.2 -9.1 | 106 25 -23.6 6.9 69 27 24384 25 9 -3.8 -8.2 | 109 24 -23.2 7.8 70 26 24689 50 12 -9.2 -7.7 | 106 30 -28.6 8.3 71 24 25298 65 13 -11.8 -5.5 | 109 33 -31.2 10.5 72 20 26420 45 11 -7.8 -7.8 | 107 28 -27.2 8.2 73 20 26518 55 1 -0.8 -0.6 | 127 25 -20.2 15.4 74 19 26822 40 10 -6.4 -7.7 | 108 27 -25.8 8.3 75 17 27432 55 13 -10.6 -7.5 | 106 31 -30.0 8.5 76 16 27737 45 15 -10.6 -10.6 | 100 30 -30.0 5.4 77 16 28042 60 14 -12.1 -7.0 | 106 33 -31.5 9.0 78 14 28651 155 11 -4.6 10.0 | 137 35 -24.0 25.9 79 14 28956 245 10 9.1 4.2 | 153 23 -10.3 20.2 80 13 29261 255 9 8.7 2.3 | 150 21 -10.7 18.3 81 12 29566 255 14 13.5 3.6 | 163 20 -5.9 19.6 82 12 29870 230 15 11.5 9.6 | 163 27 -7.9 25.6 83 11 30175 285 25 24.1 -6.5 | 207 11 4.8 9.5 84 10 30990 270 3 3.0 -0.0 | 134 23 -16.4 16.0 85 7 33410 250 11 10.3 3.8 | 155 22 -9.0 19.7 Wind Parameters Mean winds (0-6000m): 279.5 at 33.5 knts Storm direction: 309.5 at 25.1 knts Shear (0-3000m) pos: 4.8 neg: 2.5 tot: 7.3 10-3/s Storm rel Dir Shear (0-3000m): 105.8 deg Storm rel helicity (0-3000m) pos: 73.9 neg: -20.9 tot: 52.9 m^2/s^2 ave: 17.6 10^-3 m/s^2 rel: 0.32 Storm rel vorticity (0-3000m) horiz: 9.0 stream: 2.9 10^-3/s Energy-Hel index: 0.00 Bulk Rich Number: 0.20 Bulk Shear: 39.48 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 ------------------------------------------------------------------------------- 500 285 16 163 12| 26.4 0.0 26.4| 66.1 0.0 66.1 132.3 0.64| 27.8 17.7 1000 293 21 181 8| 14.4 0.0 14.4| 70.9 -0.0 70.9 70.9 0.61| 17.1 10.5 1500 297 23 196 6| 9.6 1.3 10.9| 71.6 -0.3 71.3 47.5 0.55| 13.0 7.2 2000 296 26 219 6| 7.2 2.9 10.0| 71.8 -0.6 71.2 35.6 0.46| 11.7 5.4 2500 294 28 234 7| 5.7 2.6 8.3| 73.9 -0.6 73.3 29.3 0.46| 9.7 4.4 3000 293 29 240 9| 4.8 2.5 7.3| 73.9 -20.9 52.9 17.6 0.32| 9.0 2.9 4000 285 30 231 13| 3.6 3.8 7.4| 99.4 -89.9 9.4 2.4 0.10| 9.8 1.0 5000 279 32 229 17| 4.2 3.0 7.2|191.8 -89.9 101.8 20.4 0.20| 10.2 2.1 6000 280 33 233 17| 3.9 2.8 6.7|243.5-135.9 107.6 17.9 0.18| 10.4 1.8 Wrote GIF file: /home/apache/climate/data/raob//KIAD/skewt/KIAD.skewt.20250430.12.gif