UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025042812.upa.cvt Date: 1200Z 28 APR 25 Searching for KIAD... Searching the city database file for: KIAD ... Date:1200Z 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 1017 98 6.6 3.4 80 3.2 5.1 275 2 278.4 279.2 277.4 291.5 4.80 1 1015 113 7.6 1.6 66 6.0 4.8 288 3 279.6 280.3 277.3 291.2 4.23 2 1012 136 10.0 -2.0 43 12.0 4.8 309 4 282.2 282.7 277.3 291.4 3.26 3 1011 144 10.8 -2.2 40 13.0 5.1 315 4 283.1 283.6 277.7 292.2 3.21 4 1001 222 13.2 -4.8 28 18.0 5.5 23 8 286.3 286.7 278.6 294.0 2.67 5 1000 230 13.2 -5.8 26 19.0 5.2 30 8 286.4 286.8 278.4 293.6 2.47 6 993 289 13.8 -7.2 23 21.0 5.2 57 7 287.5 287.9 278.7 294.1 2.24 7 979 408 13.4 -6.6 24 20.0 5.1 70 7 288.3 288.7 279.2 295.3 2.38 8 925 882 10.2 -7.8 27 18.0 2.9 80 7 289.7 290.1 279.8 296.5 2.29 9 850 1579 5.4 -11.6 28 17.0 -0.8 260 6 291.8 292.1 280.2 297.4 1.85 10 831 1763 4.2 -12.8 28 17.0 -1.8 278 10 292.4 292.7 280.3 297.6 1.72 11 818 1891 5.2 -24.8 9 30.0 -3.0 290 11 294.8 294.9 279.9 296.8 0.62 12 807 2001 4.6 -29.4 6 34.0 -3.8 299 11 295.3 295.4 279.8 296.7 0.41 13 784 2236 3.0 -31.0 6 34.0 -5.0 312 11 296.1 296.1 280.1 297.3 0.37 14 778 2298 3.6 -32.4 5 36.0 -4.7 313 12 297.3 297.4 280.7 298.4 0.32 15 766 2424 3.0 -34.0 5 37.0 -5.3 315 12 298.0 298.1 280.9 299.0 0.28 16 761 2477 3.2 -32.8 5 36.0 -5.1 317 12 298.8 298.9 281.3 299.9 0.32 17 730 2813 2.8 -44.2 2 47.0 -5.9 333 16 301.9 302.0 282.3 302.3 0.10 18 700 3151 0.8 -37.2 4 38.0 -7.1 325 20 303.4 303.4 283.1 304.2 0.22 19 655 3680 -3.3 -38.3 5 35.0 -10.0 325 20 304.6 304.6 283.5 305.3 0.21 20 618 4137 -5.5 -47.5 2 42.0 -11.9 325 25 307.1 307.2 284.4 307.5 0.08 21 616 4162 -5.3 -33.3 9 28.0 -11.2 325 25 307.7 307.7 284.9 309.0 0.37 22 614 4188 -5.3 -21.3 27 16.0 -9.9 325 25 307.9 308.2 285.9 311.7 1.14 23 611 4226 -5.5 -18.5 35 13.0 -9.5 325 25 308.1 308.4 286.4 312.9 1.45 24 595 4433 -7.5 -17.5 45 10.0 -10.6 323 26 308.2 308.5 286.5 313.5 1.63 25 586 4552 -8.5 -13.2 69 4.7 -10.2 321 26 308.4 308.8 287.4 315.9 2.36 26 566 4820 -10.3 -15.3 67 5.0 -11.9 316 25 309.3 309.7 287.4 315.9 2.05 27 563 4860 -10.7 -17.7 56 7.0 -12.8 316 25 309.3 309.6 287.0 314.8 1.69 28 527 5364 -14.7 -18.5 73 3.8 -15.8 315 24 310.4 310.7 287.4 315.9 1.69 29 514 5553 -15.9 -20.6 67 4.7 -17.1 315 24 311.2 311.5 287.4 316.0 1.44 30 510 5611 -16.3 -24.3 50 8.0 -18.2 315 24 311.4 311.6 287.1 314.9 1.05 31 500 5760 -17.3 -24.3 54 7.0 -18.9 315 24 311.9 312.1 287.3 315.5 1.07 32 499 5775 -17.5 -23.5 59 6.0 -18.9 315 24 311.9 312.1 287.3 315.7 1.15 33 497 5805 -17.7 -21.4 73 3.7 -18.6 314 25 312.0 312.3 287.6 316.6 1.39 34 494 5851 -17.9 -21.2 75 3.3 -18.7 314 26 312.3 312.6 287.8 317.0 1.42 35 488 5942 -18.5 -21.7 76 3.2 -19.3 312 27 312.6 312.9 287.8 317.2 1.38 36 481 6050 -19.3 -23.6 69 4.3 -20.3 311 29 313.0 313.2 287.8 316.9 1.18 37 479 6081 -19.3 -25.3 59 6.0 -20.6 310 30 313.3 313.5 287.7 316.8 1.02 38 470 6223 -20.1 -27.1 54 7.0 -21.5 309 31 314.0 314.2 287.8 317.1 0.88 39 469 6238 -20.1 -27.1 54 7.0 -21.5 309 31 314.2 314.4 287.8 317.3 0.88 40 465 6302 -20.7 -25.7 64 5.0 -21.8 308 31 314.3 314.5 288.0 317.7 1.01 41 454 6479 -22.1 -31.1 44 9.0 -23.7 307 32 314.7 314.8 287.7 316.9 0.63 42 439 6726 -23.9 -30.9 52 7.0 -25.1 305 33 315.4 315.5 288.0 317.7 0.66 43 435 6793 -24.5 -31.5 52 7.0 -25.6 304 33 315.5 315.6 288.0 317.7 0.63 44 431 6861 -25.1 -30.1 63 5.0 -25.9 304 34 315.6 315.7 288.1 318.1 0.73 45 426 6945 -25.9 -30.9 63 5.0 -26.7 303 34 315.6 315.7 288.1 318.0 0.68 46 421 7031 -26.5 -32.5 57 6.0 -27.4 302 35 315.9 316.0 288.1 318.0 0.59 47 418 7083 -26.9 -36.9 38 10.0 -28.2 302 35 316.0 316.1 287.9 317.4 0.39 48 411 7205 -27.7 -33.7 57 6.0 -28.6 301 35 316.5 316.6 288.2 318.4 0.54 49 408 7258 -28.1 -38.1 38 10.0 -29.3 300 36 316.7 316.7 288.1 317.9 0.35 50 406 7293 -28.1 -37.1 42 9.0 -29.2 300 36 317.1 317.2 288.2 318.5 0.39 51 404 7329 -28.5 -39.5 34 11.0 -29.7 301 37 317.0 317.1 288.1 318.2 0.31 52 400 7400 -29.1 -38.1 42 9.0 -30.2 305 40 317.2 317.2 288.2 318.5 0.36 53 392 7544 -30.3 -37.3 50 7.0 -31.2 305 41 317.4 317.5 288.3 318.9 0.40 54 386 7653 -30.7 -41.7 33 11.0 -31.8 305 41 318.3 318.4 288.5 319.3 0.25 55 377 7820 -31.7 -45.7 24 14.0 -32.9 307 42 319.1 319.2 288.6 319.8 0.17 56 300 9390 -44.5 -50.5 51 6.0 -44.8 320 47 322.6 322.7 289.7 323.1 0.12 57 250 10580 -54.7 -61.7 42 7.0 -54.8 320 49 324.7 324.8 290.2 324.9 0.04 58 215 11529 -60.3 -67.3 39 7.0 -60.4 325 63 330.4 330.4 291.8 330.5 0.02 59 214 11558 -60.2 -68.0 35 7.8 -60.3 325 63 330.9 330.9 292.0 331.0 0.02 60 200 11980 -59.3 -78.3 7 19.0 -59.5 315 53 338.9 338.9 294.0 338.9 0.00 61 150 13780 -59.3 -84.3 3 25.0 -59.5 310 47 367.9 367.9 300.2 367.9 0.00 62 100 16310 -60.5 -86.5 2 26.0 -60.8 315 42 410.8 410.8 306.6 410.8 0.00 63 74 18184 -59.7 -87.7 1 28.0 -60.1 303 35 449.5 449.5 310.8 449.5 0.00 64 70 18530 -60.9 -87.9 2 27.0 -61.3 310 26 454.1 454.1 311.3 454.1 0.00 65 59 19592 -62.3 -88.3 2 26.0 -62.7 302 23 473.7 473.7 313.0 473.7 0.00 66 50 20620 -61.1 -88.1 2 27.0 -61.6 355 21 499.5 499.5 314.9 499.5 0.00 67 48 20874 -61.1 -88.1 2 27.0 -61.6 345 23 505.4 505.4 315.3 505.4 0.00 68 45 21277 -58.1 -88.1 1 30.0 -58.9 5 15 522.1 522.1 316.4 522.1 0.00 69 43 21562 -59.9 -87.9 1 28.0 -60.6 332 12 524.5 524.5 316.6 524.5 0.00 70 38 22337 -58.7 -87.7 1 29.0 -59.6 300 11 546.4 546.4 317.9 546.4 0.00 71 33 23230 -55.1 -87.1 1 32.0 -56.5 28 8 578.4 578.4 319.6 578.5 0.01 72 30 23840 -54.3 -86.3 1 32.0 -56.0 360 2 596.6 596.6 320.5 596.7 0.01 73 28 24283 -53.7 -85.7 1 32.0 -55.6 12 4 610.2 610.2 321.0 610.2 0.01 74 25 25010 -55.1 -86.1 1 31.0 -56.9 0 0 626.2 626.2 321.7 626.3 0.01 75 23 25546 -52.5 -85.5 1 33.0 -55.0 8 5 649.0 649.0 322.6 649.1 0.01 76 21 26135 -52.3 -85.3 1 33.0 -55.1 16 9 666.7 666.7 323.3 666.8 0.01 77 20 26450 -53.1 -86.1 1 33.0 -55.8 20 12 673.6 673.6 323.6 673.7 0.01 78 18 27130 -52.7 -85.7 1 33.0 -55.6 43 13 695.5 695.5 324.3 695.6 0.01 79 17 27500 -50.9 -85.9 1 35.0 -54.5 76 12 712.7 712.7 324.8 712.9 0.01 80 15 28321 -47.3 -83.3 1 36.0 -52.5 222 12 750.7 750.7 326.0 750.9 0.03 81 11 30381 -45.5 -83.5 1 38.0 -52.6 223 17 826.9 826.9 327.9 827.2 0.03 82 10 31020 -43.1 -83.1 0 40.0 -51.8 275 18 858.7 858.7 328.6 859.0 0.04 83 9.7 31226 -41.5 -82.5 0 41.0 -51.1 872.2 872.2 328.9 872.6 0.05 84 9.2 31584 -42.3 -82.3 0 40.0 -51.7 882.4 882.5 329.1 882.9 0.05 85 7.9 32624 -38.1 -80.1 0 42.0 -50.7 938.5 938.6 330.1 939.4 0.08 86 7.8 32712 -38.5 -80.5 0 42.0 -50.8 940.3 940.4 330.2 941.2 0.08 87 7.6 32891 -36.5 -79.5 0 43.0 -50.2 955.4 955.5 330.5 956.5 0.09 TRP 215 11529 -60.3 -67.3 39 7.0 -60.4 325 63 330.4 330.4 291.8 330.5 0.02 WND 214 11558 -60.2 -68.0 35 7.8 -60.3 325 63 330.9 330.9 292.0 331.0 0.02 Sounding variables and indices 1000-500 mb thick: 5530.00 m Freezing level: 691.22 mb = 3254.15 m = 10676.23 ft Wetbulb zero: 866.01 mb = 1425.18 m = 4675.73 ft Precipitable water: 0.31 inches Sfc-500 mean rel hum: 27.40 % Est. max temperature: 19.58 C = 67.25 F Sfc-Lift cond lev (LCL): 968.28 mb = 500.19 m = 1641.02 ft T: 12.78 C 700-500 lapse rate: 6.94 C/km ThetaE index: 0.96 C Layer 818.0- 784.0 mb Conv cond level (CCL): 535.65 mb = 5240.07 m = 17191.64 ft Mean mixing ratio: 2.48 g/kg Conv temperature: 38.50 C = 101.30 F Cap Strength: 14.91 C Lifted Index: 15.14 C Risk: None Lifted Index @300 mb: 19.58 C Lifted Index @700 mb: 13.14 C Showalter Index: 13.50 C Risk: None Total Totals Index: 28.40 C Risk: None Vertical Totals Index: 22.70 C Cross Totals Index: 5.70 C K Index: -26.90 Risk: None Sweat Index: 36.00 Risk: None Energy Index: 3.84 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 22.66 J/kg Max Up Vert Vel: 6.73 m/s Conv Inhibition (B-): 65214.61 J/kg Cap Strength: 15.08 C Lift Cond Lev (LCL): 732.26 mb = 2788.12 m = 9147.26 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 351 at 13 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 1017 98 275 2 2.0 -0.2 | 180 12 0.1 12.2 1 1000 230 30 8 -4.0 -6.9 | 133 8 -5.9 5.5 2 991 305 65 7 -6.3 -3.0 | 139 13 -8.2 9.4 3 956 610 80 7 -6.9 -1.2 | 142 14 -8.8 11.2 4 925 882 80 7 -6.9 -1.2 | 142 14 -8.8 11.2 5 921 914 80 6 -5.9 -1.0 | 145 14 -7.8 11.3 6 888 1219 340 2 0.7 -1.9 | 173 11 -1.2 10.5 7 850 1579 260 6 5.9 1.0 | 197 14 4.0 13.4 8 824 1829 285 11 10.6 -2.8 | 222 13 8.7 9.5 9 794 2134 310 11 8.4 -7.1 | 231 8 6.5 5.3 10 764 2438 315 12 8.5 -8.5 | 239 8 6.6 3.9 11 736 2743 335 15 6.3 -13.6 | 285 5 4.4 -1.2 12 700 3151 325 20 11.5 -16.4 | 293 10 9.6 -4.0 13 656 3658 325 20 11.5 -16.4 | 293 10 9.6 -4.0 14 606 4267 325 26 14.9 -21.3 | 304 16 13.0 -8.9 15 560 4877 315 25 17.7 -17.7 | 289 17 15.8 -5.3 16 500 5760 315 24 17.0 -17.0 | 287 16 15.1 -4.6 17 478 6096 310 30 23.0 -19.3 | 288 22 21.1 -6.9 18 405 7315 300 36 31.2 -18.0 | 281 30 29.3 -5.6 19 400 7400 305 40 32.8 -22.9 | 289 33 30.9 -10.6 20 387 7620 305 41 33.6 -23.5 | 289 34 31.7 -11.1 21 311 9144 325 47 27.0 -38.5 | 316 36 25.1 -26.1 22 300 9390 320 47 30.2 -36.0 | 310 37 28.3 -23.6 23 250 10580 320 49 31.5 -37.5 | 310 39 29.6 -25.1 24 215 11529 325 63 36.1 -51.6 | 319 52 34.2 -39.2 25 214 11558 325 63 36.1 -51.6 | 319 52 34.2 -39.2 26 203 11887 325 63 36.1 -51.6 | 319 52 34.2 -39.2 27 200 11980 315 53 37.5 -37.5 | 305 44 35.6 -25.1 28 193 12192 315 57 40.3 -40.3 | 306 47 38.4 -27.9 29 167 13106 325 48 27.5 -39.3 | 316 37 25.6 -26.9 30 152 13716 310 45 34.5 -28.9 | 297 37 32.6 -16.5 31 150 13780 310 47 36.0 -30.2 | 298 38 34.1 -17.8 32 125 14935 305 40 32.8 -22.9 | 289 33 30.9 -10.6 33 119 15240 310 46 35.2 -29.6 | 297 37 33.3 -17.2 34 108 15850 300 43 37.2 -21.5 | 284 36 35.3 -9.1 35 100 16310 315 42 29.7 -29.7 | 302 33 27.8 -17.3 36 98 16459 315 42 29.7 -29.7 | 302 33 27.8 -17.3 37 76 17983 300 38 32.9 -19.0 | 282 32 31.0 -6.6 38 73 18288 305 34 27.9 -19.5 | 285 27 25.9 -7.1 39 70 18530 310 26 19.9 -16.7 | 283 19 18.0 -4.3 40 63 19202 315 27 19.1 -19.1 | 291 18 17.2 -6.7 41 60 19507 300 21 18.2 -10.5 | 263 16 16.3 1.9 42 54 20117 315 32 22.6 -22.6 | 296 23 20.7 -10.2 43 52 20422 330 28 14.0 -24.2 | 314 17 12.1 -11.9 44 50 20620 355 21 1.8 -20.9 | 1 9 -0.1 -8.5 45 49 20726 325 24 13.8 -19.7 | 302 14 11.9 -7.3 46 47 21031 5 22 -1.9 -21.9 | 22 10 -3.8 -9.5 47 45 21336 5 14 -1.2 -13.9 | 63 3 -3.1 -1.6 48 41 21946 280 10 9.8 -1.7 | 217 13 7.9 10.7 49 39 22250 285 12 11.6 -3.1 | 226 13 9.7 9.3 50 37 22555 330 10 5.0 -8.7 | 220 5 3.1 3.7 51 35 22860 45 11 -7.8 -7.8 | 115 11 -9.7 4.6 52 30 23840 360 2 -0.0 -2.0 | 170 11 -1.9 10.4 53 28 24384 15 5 -1.3 -4.8 | 157 8 -3.2 7.6 54 25 24994 0 0 -0.0 -0.0 | 171 13 -1.9 12.4 55 20 26450 20 12 -4.1 -11.3 | 100 6 -6.0 1.1 56 20 26518 345 10 2.6 -9.7 | 194 3 0.7 2.7 57 19 26822 30 12 -6.0 -10.4 | 104 8 -7.9 2.0 58 17 27432 55 13 -10.6 -7.5 | 111 13 -12.6 4.9 59 16 27737 125 10 -8.2 5.7 | 151 21 -10.1 18.1 60 14 28651 270 13 13.0 -0.0 | 222 17 11.1 12.4 61 14 28956 280 10 9.8 -1.7 | 217 13 7.9 10.7 62 12 29870 200 14 4.8 13.2 | 186 26 2.9 25.5 63 11 30175 205 17 7.2 15.4 | 191 28 5.3 27.8 64 10 31020 275 18 17.9 -1.6 | 236 19 16.0 10.8 Wind Parameters Mean winds (0-6000m): 321.3 at 16.7 knts Storm direction: 351.3 at 12.5 knts Shear (0-3000m) pos: 3.2 neg: 2.3 tot: 5.5 10-3/s Storm rel Dir Shear (0-3000m): 112.4 deg Storm rel helicity (0-3000m) pos: 69.5 neg: -14.6 tot: 55.0 m^2/s^2 ave: 18.3 10^-3 m/s^2 rel: 0.35 Storm rel vorticity (0-3000m) horiz: 9.2 stream: 3.2 10^-3/s Energy-Hel index: 0.01 Bulk Rich Number: 0.49 Bulk Shear: 46.37 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 59 7 140 12| 9.2 0.0 9.2| 3.0 -14.6 -11.6 -23.2 -0.38| 16.4 -6.1 1000 67 6 142 13| 4.6 3.1 7.7| 14.2 -14.6 -0.3 -0.3 -0.10| 11.5 -1.1 1500 59 5 145 12| 3.1 4.6 7.7| 33.6 -14.6 19.0 12.7 0.15| 10.8 1.6 2000 352 7 171 6| 2.8 3.4 6.2| 58.1 -14.6 43.5 21.7 0.29| 10.6 3.0 2500 330 8 199 6| 3.1 2.8 5.9| 64.8 -14.6 50.2 20.1 0.33| 9.5 3.2 3000 330 9 211 5| 3.2 2.3 5.5| 69.5 -14.6 55.0 18.3 0.35| 9.2 3.2 4000 327 12 245 5| 2.4 2.1 4.5| 75.9 -14.6 61.3 15.3 0.35| 7.5 2.7 5000 324 15 267 7| 1.9 2.1 4.0| 77.4 -33.3 44.2 8.8 0.26| 6.7 1.7 6000 321 17 274 9| 1.6 2.2 3.8| 79.0 -34.7 44.3 7.4 0.23| 6.2 1.4 Wrote GIF file: /home/apache/climate/data/raob//KIAD/skewt/KIAD.skewt.20250428.12.gif