UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025041812.upa.cvt Date: 1200Z 18 APR 25 Searching for KIAD... Searching the city database file for: KIAD ... Date:1200Z 18 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 1014 98 7.4 3.1 74 4.3 5.4 200 3 279.4 280.2 277.9 292.4 4.71 1 1011 120 8.2 3.3 71 4.9 5.8 198 5 280.5 281.3 278.5 293.7 4.79 2 1005 163 8.0 3.2 72 4.8 5.7 194 9 280.7 281.6 278.6 294.0 4.79 3 1000 200 8.2 3.3 71 4.9 5.8 190 13 281.4 282.2 279.0 294.8 4.85 4 989 291 9.0 3.0 66 6.0 6.1 199 18 283.0 283.9 279.7 296.4 4.80 5 986 317 9.2 3.2 66 6.0 6.3 201 20 283.5 284.3 280.1 297.1 4.88 6 982 350 11.2 -0.8 43 12.0 5.7 202 21 285.8 286.5 279.7 296.3 3.67 7 977 393 12.6 -1.4 38 14.0 6.2 204 23 287.7 288.3 280.4 297.8 3.53 8 975 410 12.8 -1.2 38 14.0 6.3 205 24 288.0 288.7 280.6 298.4 3.59 9 956 575 12.8 0.8 44 12.0 6.9 213 31 289.7 290.4 282.1 301.9 4.24 10 945 673 13.2 -0.8 38 14.0 6.5 215 32 291.0 291.7 282.3 302.1 3.81 11 932 789 12.4 -2.6 35 15.0 5.5 215 32 291.4 292.0 281.9 301.3 3.38 12 925 852 12.0 -2.0 38 14.0 5.5 215 32 291.6 292.2 282.2 302.0 3.56 13 918 915 11.4 -2.6 37 14.0 5.0 210 31 291.6 292.2 282.0 301.7 3.44 14 904 1044 11.4 -3.6 35 15.0 4.6 218 28 292.9 293.5 282.4 302.5 3.24 15 899 1090 11.6 -4.4 32 16.0 4.5 222 27 293.6 294.1 282.4 302.7 3.06 16 874 1325 11.2 -4.8 32 16.0 4.1 235 21 295.5 296.1 283.2 304.7 3.06 17 850 1557 9.8 -6.2 32 16.0 2.9 240 17 296.4 296.9 283.4 304.9 2.83 18 830 1754 8.6 -8.4 29 17.0 1.6 236 13 297.2 297.6 283.2 304.6 2.44 19 823 1824 8.6 -8.4 29 17.0 1.5 235 11 297.9 298.3 283.5 305.4 2.46 20 723 2880 1.2 -5.8 60 7.0 -1.8 267 21 301.0 301.6 285.8 311.5 3.43 21 714 2981 0.6 -7.4 55 8.0 -2.7 272 21 301.4 302.0 285.6 310.9 3.07 22 700 3139 -0.9 -7.9 59 7.0 -3.7 280 22 301.5 302.0 285.6 310.7 3.01 23 668 3510 -3.9 -7.3 77 3.4 -5.3 273 25 302.2 302.8 286.2 312.3 3.31 24 650 3725 -4.9 -8.4 76 3.5 -6.3 271 27 303.4 304.0 286.4 313.1 3.12 25 648 3750 -4.5 -12.5 54 8.0 -7.4 271 27 304.1 304.6 285.8 311.2 2.26 26 647 3762 -4.5 -12.5 54 8.0 -7.4 272 28 304.3 304.7 285.8 311.4 2.26 27 646 3774 -4.5 -12.5 54 8.0 -7.4 272 28 304.4 304.8 285.9 311.5 2.26 28 640 3847 -5.1 -9.2 73 4.1 -6.7 273 29 304.5 305.1 286.6 313.8 2.97 29 634 3921 -5.5 -10.5 68 5.0 -7.4 274 30 304.9 305.4 286.5 313.4 2.71 30 630 3971 -5.7 -8.9 78 3.2 -7.0 275 31 305.2 305.8 287.1 314.9 3.09 31 624 4046 -6.1 -13.1 58 7.0 -8.6 274 29 305.6 306.0 286.3 312.7 2.23 32 615 4159 -6.9 -17.9 41 11.0 -10.3 272 25 306.0 306.2 285.7 310.9 1.52 33 605 4287 -7.9 -18.9 41 11.0 -11.2 270 21 306.2 306.5 285.6 310.9 1.42 34 603 4313 -7.7 -19.7 38 12.0 -11.2 270 21 306.8 307.0 285.7 311.1 1.33 35 591 4469 -8.7 -18.7 44 10.0 -11.7 273 20 307.4 307.7 286.1 312.2 1.48 36 587 4521 -8.9 -18.9 44 10.0 -11.9 274 20 307.7 308.0 286.2 312.5 1.46 37 583 4574 -9.1 -22.1 34 13.0 -12.6 275 20 308.1 308.3 285.9 311.8 1.12 38 581 4601 -9.3 -20.3 40 11.0 -12.4 275 20 308.2 308.4 286.2 312.5 1.31 39 579 4627 -9.5 -21.5 37 12.0 -12.8 276 20 308.2 308.5 286.1 312.2 1.18 40 574 4694 -9.5 -29.5 18 20.0 -13.9 277 20 309.0 309.1 285.7 311.0 0.58 41 571 4735 -9.7 -20.7 40 11.0 -12.8 277 20 309.2 309.5 286.6 313.5 1.29 42 566 4803 -9.9 -21.9 37 12.0 -13.2 279 19 309.8 310.0 286.6 313.7 1.17 43 564 4830 -9.9 -22.9 34 13.0 -13.3 279 19 310.1 310.3 286.6 313.7 1.07 44 562 4857 -9.9 -18.9 48 9.0 -12.6 279 19 310.4 310.7 287.2 315.4 1.53 45 558 4912 -9.7 -25.7 26 16.0 -13.7 281 19 311.3 311.4 286.8 314.2 0.84 46 553 4982 -10.1 -29.1 19 19.0 -14.4 283 18 311.6 311.7 286.6 313.8 0.62 47 514 5541 -14.3 -23.3 46 9.0 -16.6 287 22 313.1 313.3 287.8 317.0 1.14 48 500 5750 -15.3 -27.3 35 12.0 -18.0 285 26 314.4 314.5 287.8 317.2 0.81 49 490 5903 -16.3 -27.3 38 11.0 -18.7 287 26 315.0 315.1 288.1 317.8 0.83 50 471 6200 -18.9 -23.9 65 5.0 -20.1 295 28 315.3 315.6 288.5 319.3 1.18 51 466 6279 -19.3 -27.3 49 8.0 -21.0 299 29 315.8 316.0 288.3 318.8 0.87 52 444 6638 -21.9 -26.9 64 5.0 -22.9 316 34 316.9 317.1 288.8 320.2 0.95 53 436 6772 -22.7 -30.7 48 8.0 -24.1 319 35 317.6 317.7 288.7 319.9 0.68 54 400 7400 -27.5 -36.5 42 9.0 -28.7 310 30 319.2 319.3 289.0 320.8 0.42 55 300 9400 -43.9 -51.9 41 8.0 -44.3 315 48 323.5 323.5 289.9 323.9 0.11 56 250 10590 -53.7 -58.5 56 4.8 -53.8 310 63 326.2 326.2 290.7 326.5 0.06 57 227 11206 -56.8 -61.7 54 4.9 -56.9 320 84 330.6 330.6 291.9 330.8 0.04 58 200 12000 -60.9 -65.9 52 5.0 -61.0 315 83 336.3 336.3 293.4 336.4 0.03 59 171 12968 -65.7 -70.7 50 5.0 -65.7 325 65 343.8 343.8 295.3 343.8 0.02 60 150 13770 -64.5 -84.5 5 20.0 -64.6 300 64 359.0 359.0 298.5 359.0 0.00 61 100 16280 -60.9 -85.9 2 25.0 -61.2 300 43 410.1 410.1 306.5 410.1 0.00 62 97 16469 -60.7 -86.7 2 26.0 -61.0 300 43 414.0 414.0 307.0 414.0 0.00 63 77 17903 -61.3 -87.3 2 26.0 -61.6 311 36 441.1 441.1 310.0 441.1 0.00 64 71 18403 -63.7 -87.7 2 24.0 -64.0 299 36 446.3 446.3 310.5 446.3 0.00 65 70 18490 -63.1 -88.1 2 25.0 -63.4 295 36 449.4 449.4 310.8 449.4 0.00 66 65 18948 -60.9 -86.9 2 26.0 -61.3 301 35 463.8 463.8 312.1 463.8 0.00 67 63 19141 -61.9 -86.9 2 25.0 -62.3 306 29 465.8 465.8 312.3 465.8 0.00 68 58 19653 -61.1 -87.1 2 26.0 -61.6 305 21 478.7 478.7 313.4 478.8 0.00 69 56 19871 -59.5 -86.5 2 27.0 -60.0 291 26 487.2 487.2 314.0 487.2 0.00 70 50 20580 -59.3 -86.3 2 27.0 -59.9 45 7 503.7 503.7 315.2 503.8 0.00 71 46 21102 -60.5 -87.5 2 27.0 -61.1 345 2 513.0 513.0 315.8 513.0 0.00 72 45 21239 -58.5 -86.5 2 28.0 -59.3 318 7 521.1 521.1 316.4 521.1 0.00 73 40 21979 -59.7 -86.7 2 27.0 -60.4 326 6 535.9 535.9 317.3 536.0 0.01 74 35 22821 -56.5 -85.5 1 29.0 -57.7 359 0 565.1 565.1 318.9 565.2 0.01 75 32 23391 -56.3 -86.3 1 30.0 -57.6 51 6 580.3 580.3 319.7 580.4 0.01 76 30 23800 -57.7 -86.7 1 29.0 -58.9 90 10 587.3 587.3 320.0 587.4 0.01 77 26 24702 -56.5 -86.5 1 30.0 -58.0 7 4 615.3 615.3 321.3 615.3 0.01 78 24 25207 -57.7 -86.7 1 29.0 -59.2 10 7 626.0 626.0 321.7 626.1 0.01 79 23 25476 -54.5 -85.5 1 31.0 -56.6 12 8 643.1 643.1 322.4 643.2 0.01 80 22 25760 -55.1 -85.1 1 30.0 -57.1 14 9 649.6 649.6 322.7 649.7 0.01 81 20 26370 -52.7 -84.7 1 32.0 -55.5 105 11 674.9 674.9 323.6 675.0 0.02 82 18 27056 -49.5 -82.5 1 33.0 -53.4 121 8 705.6 705.6 324.6 705.8 0.02 83 15 28247 -51.3 -83.3 1 32.0 -55.1 117 10 737.4 737.4 325.6 737.6 0.03 84 13 29180 -50.5 -83.5 1 33.0 -55.0 97 11 771.0 771.0 326.5 771.2 0.03 85 13 29180 -48.9 -82.9 1 34.0 -53.9 97 11 776.5 776.5 326.7 776.8 0.03 86 12 29705 -49.9 -82.9 1 33.0 -54.8 123 13 790.9 791.0 327.0 791.3 0.03 87 10 30920 -41.7 -79.7 1 38.0 -51.0 240 4 863.9 863.9 328.7 864.6 0.07 88 9.9 30988 -41.5 -79.5 1 38.0 -51.0 867.1 867.2 328.8 867.9 0.07 89 7.5 32878 -40.1 -80.1 1 40.0 -51.7 944.5 944.5 330.2 945.4 0.09 TRP 171 12968 -65.7 -70.7 50 5.0 -65.7 325 65 343.8 343.8 295.3 343.8 0.02 WND 227 11206 -56.8 -61.7 54 4.9 -56.9 320 84 330.6 330.6 291.9 330.8 0.04 Sounding variables and indices 1000-500 mb thick: 5550.00 m Freezing level: 708.40 mb = 3043.92 m = 9986.50 ft Wetbulb zero: 777.20 mb = 2290.77 m = 7515.55 ft Precipitable water: 0.61 inches Sfc-500 mean rel hum: 45.38 % Est. max temperature: 23.92 C = 75.05 F Sfc-Lift cond lev (LCL): 949.40 mb = 633.64 m = 2078.86 ft T: 13.04 C 700-500 lapse rate: 5.52 C/km ThetaE index: 0.85 C Layer 932.0- 925.0 mb Conv cond level (CCL): 635.69 mb = 3900.26 m = 12795.97 ft Mean mixing ratio: 4.03 g/kg Conv temperature: 32.87 C = 91.17 F Cap Strength: 13.57 C Lifted Index: 14.27 C Risk: None Lifted Index @300 mb: 17.37 C Lifted Index @700 mb: 9.04 C Showalter Index: 10.29 C Risk: None Total Totals Index: 34.20 C Risk: None Vertical Totals Index: 25.10 C Cross Totals Index: 9.10 C K Index: 11.90 Risk: None Sweat Index: 173.39 Risk: None Energy Index: 2.55 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 50.23 J/kg Max Up Vert Vel: 10.02 m/s Conv Inhibition (B-): 61241.41 J/kg Cap Strength: 14.13 C Lift Cond Lev (LCL): 812.90 mb = 1924.66 m = 6314.42 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 288 at 16 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 1014 98 200 3 1.0 2.8 | 119 16 -14.1 7.9 1 1000 200 190 13 2.3 12.8 | 144 22 -12.9 17.8 2 988 305 200 19 6.5 17.9 | 159 24 -8.6 22.9 3 952 610 215 32 18.4 26.2 | 186 31 3.2 31.3 4 925 852 215 32 18.4 26.2 | 186 31 3.2 31.3 5 918 914 210 31 15.5 26.8 | 181 32 0.4 31.9 6 885 1219 230 24 18.4 15.4 | 189 21 3.2 20.5 7 853 1524 245 16 14.5 6.8 | 177 12 -0.6 11.8 8 850 1557 240 17 14.7 8.5 | 178 14 -0.4 13.5 9 822 1829 235 11 9.0 6.3 | 152 13 -6.1 11.4 10 792 2134 230 11 8.4 7.1 | 151 14 -6.7 12.1 11 763 2438 250 17 16.0 5.8 | 184 11 0.8 10.9 12 735 2743 260 20 19.7 3.5 | 208 10 4.6 8.5 13 700 3139 280 22 21.7 -3.8 | 259 7 6.5 1.2 14 655 3658 270 26 26.0 -0.0 | 245 12 10.9 5.0 15 630 3962 275 31 30.9 -2.7 | 262 16 15.7 2.3 16 605 4267 270 21 21.0 -0.0 | 229 8 5.9 5.0 17 560 4877 280 19 18.7 -3.3 | 244 4 3.6 1.7 18 538 5182 290 15 14.1 -5.1 | 85 1 -1.0 -0.1 19 500 5750 285 26 25.1 -6.7 | 280 10 10.0 -1.7 20 497 5791 285 26 25.1 -6.7 | 280 10 10.0 -1.7 21 477 6096 290 27 25.4 -9.2 | 292 11 10.2 -4.2 22 439 6706 320 35 22.5 -26.8 | 341 23 7.4 -21.8 23 400 7400 310 30 23.0 -19.3 | 331 16 7.8 -14.2 24 388 7620 315 32 22.6 -22.6 | 337 19 7.5 -17.6 25 311 9144 310 51 39.1 -32.8 | 319 37 23.9 -27.7 26 300 9400 315 48 33.9 -33.9 | 327 34 18.8 -28.9 27 271 10058 315 48 33.9 -33.9 | 327 34 18.8 -28.9 28 250 10590 310 63 48.3 -40.5 | 317 49 33.1 -35.5 29 247 10668 305 59 48.3 -33.8 | 311 44 33.2 -28.8 30 227 11206 320 84 54.0 -64.3 | 327 71 38.8 -59.3 31 224 11278 320 84 54.0 -64.3 | 327 71 38.8 -59.3 32 200 12000 315 83 58.7 -58.7 | 321 69 43.5 -53.6 33 194 12192 315 83 58.7 -58.7 | 321 69 43.5 -53.6 34 171 12968 325 65 37.3 -53.2 | 335 53 22.1 -48.2 35 167 13106 325 66 37.9 -54.1 | 335 54 22.7 -49.0 36 159 13411 315 45 31.8 -31.8 | 328 32 16.7 -26.8 37 150 13770 300 64 55.4 -32.0 | 304 48 40.3 -27.0 38 144 14021 300 69 59.8 -34.5 | 303 53 44.6 -29.5 39 124 14935 300 70 60.6 -35.0 | 303 54 45.5 -30.0 40 118 15240 315 60 42.4 -42.4 | 324 46 27.3 -37.4 41 113 15545 320 51 32.8 -39.1 | 333 38 17.6 -34.0 42 100 16280 300 43 37.2 -21.5 | 307 28 22.1 -16.5 43 97 16459 300 43 37.2 -21.5 | 307 28 22.1 -16.5 44 88 17069 295 40 36.3 -16.9 | 299 24 21.1 -11.9 45 80 17678 315 35 24.7 -24.7 | 334 22 9.6 -19.7 46 72 18288 305 37 30.3 -21.2 | 317 22 15.2 -16.2 47 70 18490 295 36 32.6 -15.2 | 300 20 17.5 -10.2 48 69 18593 290 32 30.1 -10.9 | 292 16 14.9 -5.9 49 66 18898 300 37 32.0 -18.5 | 309 22 16.9 -13.5 50 59 19507 315 18 12.7 -12.7 | 17 8 -2.4 -7.7 51 54 20117 275 31 30.9 -2.7 | 262 16 15.7 2.3 52 51 20422 315 24 17.0 -17.0 | 351 12 1.8 -11.9 53 50 20580 45 7 -4.9 -4.9 | 90 20 -20.1 0.1 54 47 21031 0 0 -0.0 -0.0 | 108 16 -15.1 5.0 55 44 21336 300 10 8.7 -5.0 | 90 6 -6.5 0.0 56 35 22860 0 0 -0.0 -0.0 | 108 16 -15.1 5.0 57 30 23800 90 10 -10.0 0.0 | 101 26 -25.1 5.0 58 29 24079 85 10 -10.0 -0.9 | 99 25 -25.1 4.2 59 27 24384 5 3 -0.3 -3.0 | 98 16 -15.4 2.1 60 22 25908 15 10 -2.6 -9.7 | 75 18 -17.7 -4.6 61 21 26213 35 17 -9.8 -13.9 | 70 26 -24.9 -8.9 62 20 26370 105 11 -10.6 2.8 | 107 27 -25.8 7.9 63 19 26822 115 10 -9.1 4.2 | 111 26 -24.2 9.3 64 17 27432 130 6 -4.6 3.9 | 114 22 -19.7 8.9 65 16 27737 180 11 0.0 11.0 | 137 22 -15.1 16.0 66 14 28651 70 10 -9.4 -3.4 | 94 25 -24.5 1.6 67 11 30175 145 14 -8.0 11.5 | 125 28 -23.2 16.5 68 10 30920 240 4 3.5 2.0 | 121 14 -11.7 7.0 Wind Parameters Mean winds (0-6000m): 258.4 at 21.3 knts Storm direction: 288.4 at 16.0 knts Shear (0-3000m) pos: 4.5 neg: 0.9 tot: 5.4 10-3/s Storm rel Dir Shear (0-3000m): 133.3 deg Storm rel helicity (0-3000m) pos: 240.6 neg: -49.6 tot: 191.0 m^2/s^2 ave: 63.7 10^-3 m/s^2 rel: 0.46 Storm rel vorticity (0-3000m) horiz: 13.7 stream: 6.3 10^-3/s Energy-Hel index: 0.06 Bulk Rich Number: 1.13 Bulk Shear: 44.38 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 ------------------------------------------------------------------------------- 500 205 19 163 24| 29.4 0.0 29.4|167.6 0.0 167.6 335.1 0.87| 31.7 27.6 1000 211 25 175 27| 12.4 0.0 12.4|187.8 -17.8 170.0 170.0 0.67| 20.9 14.1 1500 217 24 178 24| 4.8 0.0 4.8|193.4 -31.4 162.0 108.0 0.45| 19.0 8.5 2000 220 21 175 21| 3.6 1.4 5.0|193.4 -49.6 143.8 71.9 0.32| 15.7 5.0 2500 224 20 175 19| 4.6 1.1 5.8|222.5 -49.6 172.9 69.2 0.40| 14.6 5.9 3000 231 20 181 17| 4.5 0.9 5.4|240.6 -49.6 191.0 63.7 0.46| 13.7 6.3 4000 245 21 197 15| 3.5 0.2 3.8|252.7 -60.1 192.6 48.2 0.39| 12.1 4.8 5000 252 21 203 13| 1.9 0.2 2.0|254.8 -69.4 185.4 37.1 0.32| 11.0 3.5 6000 258 21 211 11| 1.9 0.5 2.4|261.3 -70.9 190.4 31.7 0.26| 10.5 2.7 Wrote GIF file: /home/apache/climate/data/raob//KIAD/skewt/KIAD.skewt.20250418.12.gif