UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025042200.upa.cvt Date: 0000Z 22 APR 25 Searching for KIAD... Searching the city database file for: KIAD ... Date:0000Z 22 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 1005 98 23.2 15.2 61 8.0 17.9 145 9 295.9 297.9 290.9 327.3 10.86 1 1000 128 22.8 14.8 61 8.0 17.6 145 11 296.0 297.9 290.7 326.6 10.64 2 939 673 18.6 12.6 68 6.0 14.8 188 19 297.0 298.8 290.4 325.5 9.80 3 934 719 18.8 11.8 64 7.0 14.4 194 20 297.7 299.4 290.2 324.9 9.34 4 925 802 18.2 12.2 68 6.0 14.4 205 21 297.9 299.7 290.6 326.2 9.69 5 869 1334 13.4 10.6 83 2.8 11.7 216 31 298.3 300.0 290.4 325.4 9.27 6 850 1520 12.2 9.5 84 2.7 10.6 225 35 298.9 300.5 290.2 324.7 8.80 7 827 1750 11.0 6.7 75 4.3 8.5 229 34 300.0 301.4 289.4 322.1 7.46 8 817 1851 10.6 7.0 78 3.6 8.5 232 33 300.6 302.0 289.8 323.5 7.71 9 814 1882 10.6 7.1 79 3.5 8.6 234 32 301.0 302.4 290.0 324.1 7.79 10 804 1985 10.6 7.3 80 3.3 8.6 242 30 302.0 303.5 290.5 325.8 8.00 11 719 2907 4.0 3.1 94 0.9 3.5 280 28 304.6 305.8 290.2 324.7 6.67 12 700 3125 3.0 1.5 90 1.5 2.2 280 31 305.8 306.9 290.1 324.4 6.10 13 684 3313 2.4 -0.3 82 2.7 1.0 275 31 307.2 308.2 290.0 324.0 5.48 14 628 3999 -2.1 -3.1 93 1.0 -2.6 265 35 309.6 310.5 290.2 324.7 4.85 15 625 4037 -1.9 -4.8 81 2.9 -3.3 265 35 310.3 311.1 289.9 323.7 4.28 16 618 4127 -2.1 -7.1 69 5.0 -4.3 265 36 311.0 311.7 289.5 322.6 3.63 17 597 4401 -3.7 -6.6 80 2.9 -5.0 262 40 312.3 313.0 290.2 324.7 3.91 18 590 4495 -3.3 -6.5 78 3.2 -4.7 260 42 313.8 314.6 290.7 326.5 3.99 19 582 4603 -2.7 -8.7 63 6.0 -5.3 257 44 315.7 316.4 290.8 326.7 3.40 20 581 4617 -2.9 -9.9 58 7.0 -5.8 257 44 315.7 316.3 290.5 325.7 3.10 21 574 4713 -3.5 -10.5 58 7.0 -6.4 254 46 316.0 316.6 290.5 325.8 2.99 22 565 4838 -4.7 -9.7 68 5.0 -6.8 251 48 316.1 316.7 290.7 326.6 3.24 23 563 4866 -4.7 -11.7 58 7.0 -7.5 251 49 316.4 316.9 290.4 325.4 2.77 24 561 4894 -4.7 -16.7 38 12.0 -8.9 250 49 316.7 317.1 289.6 322.9 1.84 25 555 4979 -5.5 -21.5 27 16.0 -10.4 250 50 316.7 317.0 289.0 320.9 1.24 26 543 5150 -7.1 -19.1 38 12.0 -10.9 250 51 316.8 317.1 289.4 322.0 1.55 27 538 5222 -7.5 -21.5 32 14.0 -11.7 250 52 317.2 317.4 289.2 321.5 1.27 28 533 5295 -7.9 -20.9 34 13.0 -11.8 250 52 317.5 317.8 289.4 322.2 1.36 29 531 5324 -8.3 -15.3 57 7.0 -10.8 250 52 317.4 317.8 290.2 324.7 2.19 30 528 5368 -8.7 -12.9 72 4.2 -10.3 250 53 317.4 318.0 290.6 326.3 2.68 31 526 5398 -8.7 -10.8 85 2.1 -9.5 250 53 317.8 318.4 291.2 328.2 3.19 32 518 5517 -9.5 -11.4 86 1.9 -10.2 250 54 318.2 318.8 291.2 328.3 3.09 33 513 5592 -9.5 -13.2 74 3.7 -10.9 250 54 319.1 319.6 291.2 328.0 2.70 34 501 5775 -11.1 -15.5 70 4.4 -12.6 250 56 319.3 319.8 290.8 326.9 2.28 35 500 5790 -11.1 -15.8 68 4.7 -12.7 250 56 319.5 319.9 290.9 327.0 2.23 36 488 5976 -12.3 -21.3 47 9.0 -14.9 250 57 320.3 320.5 290.3 325.2 1.43 37 483 6054 -12.9 -20.9 51 8.0 -15.3 250 57 320.5 320.8 290.5 325.6 1.50 38 474 6197 -13.7 -22.7 47 9.0 -16.2 250 59 321.2 321.5 290.5 325.7 1.30 39 473 6213 -13.7 -22.7 47 9.0 -16.2 250 60 321.4 321.7 290.5 325.9 1.30 40 469 6278 -14.3 -24.3 42 10.0 -16.9 250 61 321.4 321.7 290.4 325.4 1.14 41 463 6375 -15.1 -24.4 45 9.3 -17.5 250 63 321.6 321.8 290.5 325.6 1.14 42 417 7155 -21.7 -25.4 72 3.7 -22.5 250 54 322.9 323.1 290.9 327.0 1.16 43 413 7226 -22.3 -26.7 67 4.4 -23.2 250 53 323.0 323.2 290.7 326.7 1.04 44 407 7333 -23.1 -27.2 69 4.1 -23.9 250 52 323.4 323.6 290.8 326.9 1.01 45 400 7460 -23.9 -27.8 70 3.9 -24.7 250 50 323.9 324.1 291.0 327.4 0.97 46 395 7552 -24.5 -28.2 71 3.7 -25.2 250 50 324.3 324.5 291.0 327.7 0.95 47 392 7607 -24.9 -27.5 79 2.6 -25.4 250 50 324.5 324.7 291.2 328.1 1.02 48 390 7644 -25.3 -28.9 72 3.6 -26.0 250 50 324.4 324.6 291.0 327.6 0.90 49 375 7928 -26.9 -28.6 85 1.7 -27.2 253 47 326.0 326.2 291.6 329.4 0.96 50 373 7967 -27.3 -29.2 84 1.9 -27.6 254 47 326.0 326.1 291.5 329.2 0.92 51 348 8463 -30.7 -33.9 73 3.2 -31.2 259 43 327.9 328.0 291.7 330.2 0.63 52 347 8484 -31.1 -33.9 76 2.8 -31.5 259 43 327.6 327.7 291.7 329.9 0.63 53 345 8525 -31.3 -35.4 67 4.1 -31.9 260 42 327.9 328.0 291.7 329.9 0.54 54 342 8587 -31.7 -35.2 71 3.5 -32.2 260 42 328.2 328.3 291.7 330.2 0.56 55 336 8712 -32.7 -37.7 61 5.0 -33.3 259 41 328.5 328.6 291.7 330.1 0.44 56 333 8775 -33.1 -36.4 72 3.3 -33.5 258 41 328.8 328.9 291.9 330.7 0.51 57 300 9500 -38.9 -43.6 61 4.7 -39.3 255 43 330.5 330.6 292.2 331.6 0.27 58 250 10720 -48.7 -58.7 30 10.0 -49.0 245 42 333.7 333.7 292.7 333.9 0.06 59 200 12140 -61.1 -65.9 53 4.8 -61.2 260 49 336.0 336.0 293.3 336.1 0.03 60 155 13685 -71.5 -75.6 54 4.1 -71.5 245 48 343.7 343.7 295.2 343.7 0.01 61 150 13880 -69.3 -74.3 48 5.0 -69.4 260 47 350.7 350.7 296.8 350.8 0.01 62 100 16330 -62.5 -86.5 3 24.0 -62.7 270 10 407.0 407.0 306.1 407.0 0.00 63 96 16581 -64.1 -87.1 3 23.0 -64.3 269 17 408.6 408.6 306.3 408.6 0.00 64 93 16776 -61.3 -87.3 2 26.0 -61.6 232 14 417.9 417.9 307.4 417.9 0.00 65 87 17188 -63.5 -87.5 2 24.0 -63.7 264 10 421.5 421.5 307.9 421.5 0.00 66 81 17627 -62.7 -87.7 2 25.0 -63.0 253 21 431.8 431.8 309.0 431.8 0.00 67 73 18264 -65.3 -88.3 3 23.0 -65.5 321 11 439.4 439.4 309.8 439.4 0.00 68 70 18520 -63.5 -88.5 2 25.0 -63.8 290 7 448.5 448.5 310.7 448.5 0.00 69 62 19263 -65.5 -88.5 3 23.0 -65.7 306 11 459.9 459.9 311.8 460.0 0.00 70 58 19671 -64.7 -88.7 2 24.0 -65.0 349 11 470.6 470.6 312.7 470.6 0.00 71 57 19777 -63.1 -88.1 2 25.0 -63.4 2 12 476.6 476.6 313.2 476.6 0.00 72 52 20345 -61.5 -87.5 2 26.0 -62.0 1 1 493.0 493.0 314.4 493.0 0.00 73 51 20466 -60.1 -87.1 2 27.0 -60.7 33 2 499.0 499.0 314.9 499.0 0.00 74 51 20466 -60.1 -87.1 2 27.0 -60.7 33 2 499.0 499.0 314.9 499.0 0.00 75 50 20590 -60.9 -87.9 2 27.0 -61.4 120 9 500.0 500.0 314.9 500.0 0.00 76 49 20715 -61.1 -88.1 2 27.0 -61.6 124 9 502.4 502.4 315.1 502.4 0.00 77 47 20976 -58.5 -87.5 1 29.0 -59.2 133 10 514.6 514.6 315.9 514.7 0.00 78 44 21392 -57.1 -86.1 1 29.0 -58.0 160 5 527.9 527.9 316.8 527.9 0.01 79 38 22314 -59.3 -87.3 1 28.0 -60.1 112 11 544.9 544.9 317.8 544.9 0.01 80 34 23016 -56.1 -86.1 1 30.0 -57.3 209 10 570.9 570.9 319.2 570.9 0.01 81 33 23205 -57.5 -86.5 1 29.0 -58.6 239 10 572.1 572.1 319.3 572.1 0.01 82 30 23810 -55.3 -86.3 1 31.0 -56.8 360 13 593.9 593.9 320.3 593.9 0.01 83 25 24976 -53.1 -85.1 1 32.0 -55.4 71 13 632.0 632.0 322.0 632.1 0.01 84 23 25510 -54.3 -85.3 1 31.0 -56.4 104 10 643.7 643.7 322.4 643.8 0.01 85 20 26410 -51.5 -84.5 1 33.0 -54.5 355 5 678.5 678.5 323.7 678.7 0.02 86 19 26744 -51.1 -84.1 1 33.0 -54.4 351 9 689.8 689.8 324.1 689.9 0.02 87 17 27467 -53.1 -85.1 1 32.0 -56.1 35 7 705.7 705.7 324.6 705.8 0.02 88 15 28281 -50.3 -84.3 1 34.0 -54.4 336 9 740.7 740.7 325.7 740.9 0.02 89 15 28281 -50.9 -84.9 1 34.0 -54.8 336 9 738.7 738.7 325.6 738.9 0.02 90 13 29223 -47.1 -83.1 1 36.0 -52.9 84 13 782.7 782.8 326.8 783.0 0.03 91 13 29223 -47.1 -83.1 1 36.0 -52.9 84 13 782.7 782.8 326.8 783.0 0.03 92 12 29752 -48.3 -83.3 1 35.0 -53.9 82 12 796.6 796.6 327.1 796.9 0.03 93 11 30330 -45.9 -82.9 1 37.0 -52.8 80 12 825.4 825.4 327.8 825.8 0.04 94 10 30970 -42.5 -81.5 1 39.0 -51.4 80 15 860.9 860.9 328.7 861.4 0.05 95 9.6 31245 -41.9 -80.9 1 39.0 -51.4 70 14 873.3 873.3 328.9 873.9 0.06 96 8.9 31755 -43.1 -82.1 1 39.0 -52.2 52 13 887.8 887.8 329.2 888.3 0.05 97 8.3 32225 -42.5 -82.5 0 40.0 -52.3 36 11 908.0 908.1 329.6 908.6 0.05 98 7.4 33001 -40.9 -81.9 0 41.0 -52.1 8 9 944.8 944.9 330.2 945.5 0.07 99 7.0 33380 -38.9 -80.9 0 42.0 -51.6 355 8 968.2 968.3 330.7 969.2 0.08 100 6.6 33786 -36.3 -79.3 0 43.0 -50.9 995.6 995.7 331.1 996.9 0.11 101 6.4 33999 -36.9 -78.9 0 42.0 -51.2 1001.9 1001.9 331.2 1003.3 0.12 102 6.2 34220 -34.7 -77.7 0 43.0 -50.7 1020.4 1020.5 331.5 1022.3 0.16 103 5.6 34933 -33.1 -77.1 0 44.0 -50.7 1057.6 1057.7 332.1 1060.0 0.19 104 5.4 35189 -33.7 -77.7 0 44.0 -51.1 1066.0 1066.1 332.2 1068.2 0.18 TRP 155 13685 -71.5 -75.6 54 4.1 -71.5 245 48 343.7 343.7 295.2 343.7 0.01 WND 463 6375 -15.1 -24.4 45 9.3 -17.5 250 63 321.6 321.8 290.5 325.6 1.14 Sounding variables and indices 1000-500 mb thick: 5662.00 m Freezing level: 654.13 mb = 3678.52 m = 12068.49 ft Wetbulb zero: 668.08 mb = 3501.68 m = 11488.31 ft Precipitable water: 1.42 inches Sfc-500 mean rel hum: 74.94 % Est. max temperature: 26.03 C = 78.86 F Sfc-Lift cond lev (LCL): 893.46 mb = 1097.43 m = 3600.45 ft T: 15.53 C 700-500 lapse rate: 5.29 C/km ThetaE index: 4.09 C Layer 869.0- 817.0 mb Conv cond level (CCL): 827.36 mb = 1746.20 m = 5728.93 ft Mean mixing ratio: 10.02 g/kg Conv temperature: 27.27 C = 81.09 F Cap Strength: 2.91 C Lifted Index: 2.09 C Risk: None Lifted Index @300 mb: 3.97 C Lifted Index @700 mb: 0.17 C Showalter Index: 2.77 C Risk: Showers probable Total Totals Index: 43.90 C Risk: None Vertical Totals Index: 23.30 C Cross Totals Index: 20.60 C K Index: 31.30 Risk: 60-80 % chance of thunderstorms Sweat Index: 317.83 Risk: Showers and thunderstorms possible Energy Index: 0.43 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 9.20 J/kg Max Up Vert Vel: 4.29 m/s Conv Inhibition (B-): 46574.81 J/kg Cap Strength: 2.80 C Lift Cond Lev (LCL): 864.56 mb = 1376.92 m = 4517.41 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 280 at 26 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 1005 98 145 9 -5.2 7.4 | 111 33 -30.9 11.9 1 1000 128 145 11 -6.3 9.0 | 113 35 -32.0 13.5 2 980 305 150 13 -6.5 11.3 | 116 36 -32.2 15.7 3 946 610 180 18 0.0 18.0 | 131 34 -25.7 22.5 4 925 802 205 21 8.9 19.0 | 144 29 -16.8 23.5 5 913 914 205 21 8.9 19.0 | 144 29 -16.8 23.5 6 881 1219 210 28 14.0 24.2 | 158 31 -11.7 28.7 7 850 1520 225 35 24.7 24.7 | 178 29 -1.0 29.2 8 850 1524 225 36 25.5 25.5 | 180 30 -0.2 29.9 9 819 1829 230 33 25.3 21.2 | 179 26 -0.4 25.7 10 789 2134 255 27 26.1 7.0 | 182 11 0.4 11.5 11 761 2438 270 28 28.0 -0.0 | 207 5 2.3 4.5 12 733 2743 280 26 25.6 -4.5 | 74 0 -0.1 -0.0 13 700 3125 280 31 30.5 -5.4 | 281 5 4.8 -0.9 14 654 3658 265 31 30.9 2.7 | 216 9 5.2 7.2 15 606 4267 265 38 37.9 3.3 | 237 14 12.1 7.8 16 561 4877 250 49 46.0 16.8 | 224 29 20.3 21.2 17 500 5790 250 56 52.6 19.2 | 229 36 26.9 23.6 18 480 6096 250 57 53.6 19.5 | 229 37 27.9 24.0 19 463 6375 250 63 59.2 21.5 | 232 42 33.5 26.0 20 461 6401 250 63 59.2 21.5 | 232 42 33.5 26.0 21 400 7460 250 50 47.0 17.1 | 225 30 21.3 21.6 22 391 7620 250 50 47.0 17.1 | 225 30 21.3 21.6 23 344 8534 260 42 41.4 7.3 | 233 20 15.7 11.8 24 315 9144 255 39 37.7 10.1 | 219 19 12.0 14.6 25 300 9500 255 43 41.5 11.1 | 225 22 15.8 15.6 26 264 10363 245 40 36.3 16.9 | 206 24 10.5 21.4 27 250 10720 245 42 38.1 17.7 | 209 25 12.4 22.2 28 200 12140 260 49 48.3 8.5 | 240 26 22.5 13.0 29 189 12497 260 51 50.2 8.9 | 241 28 24.5 13.3 30 155 13685 245 48 43.5 20.3 | 216 31 17.8 24.8 31 154 13716 245 44 39.9 18.6 | 212 27 14.2 23.1 32 150 13880 260 47 46.3 8.2 | 238 24 20.6 12.6 33 147 14021 255 49 47.3 12.7 | 232 28 21.6 17.2 34 132 14630 260 30 29.5 5.2 | 202 10 3.8 9.7 35 120 15240 260 44 43.3 7.6 | 235 21 17.6 12.1 36 114 15545 285 37 35.7 -9.6 | 297 11 10.0 -5.1 37 103 16154 280 32 31.5 -5.6 | 280 6 5.8 -1.1 38 100 16330 270 10 10.0 -0.0 | 106 16 -15.7 4.5 39 98 16459 295 19 17.2 -8.0 | 67 9 -8.5 -3.5 40 93 16764 230 14 10.7 9.0 | 132 20 -15.0 13.5 41 89 17069 275 10 10.0 -0.9 | 103 16 -15.7 3.6 42 84 17374 245 10 9.1 4.2 | 118 19 -16.6 8.7 43 80 17678 255 23 22.2 6.0 | 162 11 -3.5 10.4 44 76 17983 335 19 8.0 -17.2 | 54 22 -17.7 -12.7 45 73 18288 320 10 6.4 -7.7 | 81 20 -19.3 -3.2 46 70 18520 290 7 6.6 -2.4 | 96 19 -19.1 2.1 47 69 18593 240 13 11.3 6.5 | 127 18 -14.4 11.0 48 60 19507 330 10 5.0 -8.7 | 79 21 -20.7 -4.2 49 57 19812 5 12 -1.0 -12.0 | 74 28 -26.8 -7.5 50 51 20422 0 0 -0.0 -0.0 | 100 26 -25.7 4.5 51 50 20590 120 9 -7.8 4.5 | 105 35 -33.5 9.0 52 47 21031 135 10 -7.1 7.1 | 109 35 -32.8 11.6 53 44 21336 175 5 -0.4 5.0 | 110 28 -26.1 9.5 54 40 21946 25 10 -4.2 -9.1 | 81 30 -29.9 -4.6 55 38 22250 105 11 -10.6 2.8 | 101 37 -36.3 7.3 56 37 22555 135 10 -7.1 7.1 | 109 35 -32.8 11.6 57 32 23470 280 10 9.8 -1.7 | 100 16 -15.9 2.7 58 30 23774 315 12 8.5 -8.5 | 77 18 -17.2 -4.0 59 30 23810 360 13 -0.0 -13.0 | 72 27 -25.7 -8.5 60 29 24079 360 13 -0.0 -13.0 | 72 27 -25.7 -8.5 61 27 24384 360 12 -0.0 -12.0 | 74 27 -25.7 -7.5 62 26 24689 45 14 -9.9 -9.9 | 81 36 -35.6 -5.4 63 24 25298 100 11 -10.8 1.9 | 100 37 -36.5 6.4 64 23 25603 105 10 -9.7 2.6 | 101 36 -35.4 7.1 65 20 26410 355 5 0.4 -5.0 | 89 25 -25.3 -0.5 66 19 26822 350 10 1.7 -9.8 | 77 25 -24.0 -5.4 67 18 27127 360 10 -0.0 -10.0 | 78 26 -25.7 -5.5 68 17 27432 40 7 -4.5 -5.4 | 88 30 -30.2 -0.9 69 16 28042 340 2 0.7 -1.9 | 96 25 -25.0 2.6 70 15 28346 335 10 4.2 -9.1 | 78 22 -21.5 -4.6 71 14 28651 20 16 -5.5 -15.0 | 71 33 -31.2 -10.5 72 14 28956 75 21 -20.3 -5.4 | 89 46 -46.0 -0.9 73 13 29261 85 13 -13.0 -1.1 | 95 39 -38.7 3.4 74 11 30175 80 11 -10.8 -1.9 | 94 37 -36.5 2.6 75 10 30970 80 15 -14.8 -2.6 | 93 41 -40.5 1.9 76 7 33380 355 8 0.7 -8.0 | 82 25 -25.0 -3.5 Wind Parameters Mean winds (0-6000m): 249.9 at 34.8 knts Storm direction: 279.9 at 26.1 knts Shear (0-3000m) pos: 6.4 neg: 0.0 tot: 6.4 10-3/s Storm rel Dir Shear (0-3000m): 169.6 deg Storm rel helicity (0-3000m) pos: 337.1 neg: -1.5 tot: 335.6 m^2/s^2 ave: 111.9 10^-3 m/s^2 rel: 0.57 Storm rel vorticity (0-3000m) horiz: 12.9 stream: 7.4 10^-3/s Energy-Hel index: 0.02 Bulk Rich Number: 0.05 Bulk Shear: 185.97 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 ------------------------------------------------------------------------------- 500 160 14 120 35| 11.8 0.0 11.8|111.4 0.0 111.4 222.7 0.90| 13.7 12.3 1000 185 17 132 33| 11.6 0.0 11.6|208.7 0.0 208.7 208.7 0.88| 13.9 12.3 1500 201 22 145 31| 12.0 0.0 12.0|321.5 0.0 321.5 214.3 0.92| 14.3 13.0 2000 213 25 154 28| 8.1 0.0 8.1|330.3 -1.4 328.8 164.4 0.68| 14.8 10.1 2500 224 25 160 24| 6.9 0.0 6.9|337.0 -1.4 335.6 134.2 0.62| 14.2 8.8 3000 235 26 166 20| 6.4 0.0 6.4|337.1 -1.5 335.6 111.9 0.57| 12.9 7.4 4000 247 27 178 15| 4.8 1.3 6.1|345.2 -11.8 333.4 83.4 0.45| 11.4 5.1 5000 250 31 192 15| 3.9 2.9 6.8|353.3 -41.1 312.3 62.5 0.34| 11.1 3.7 6000 250 35 203 18| 3.2 2.9 6.1|375.2 -41.1 334.1 55.7 0.34| 9.8 3.3 Wrote GIF file: /home/apache/climate/data/raob//KIAD/skewt/KIAD.skewt.20250422.00.gif