UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025042012.upa.cvt Date: 1200Z 20 APR 25 Searching for KIAD... Searching the city database file for: KIAD ... Date:1200Z 20 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 21.8 13.8 60 8.0 16.7 310 10 293.9 295.6 289.3 322.0 9.83 1 1000 198 21.2 12.2 56 9.0 15.6 320 17 294.4 296.0 288.8 320.1 8.96 2 988 302 20.4 12.4 60 8.0 15.4 325 21 294.6 296.2 289.0 321.0 9.19 3 925 866 15.2 10.6 74 4.6 12.4 320 27 294.9 296.4 288.7 319.9 8.70 4 905 1051 13.6 9.9 78 3.7 11.4 313 33 295.1 296.6 288.6 319.5 8.49 5 897 1126 13.6 9.6 77 4.0 11.2 312 36 295.8 297.3 288.8 320.1 8.39 6 850 1579 11.8 7.6 75 4.2 9.3 300 41 298.5 299.9 289.1 321.2 7.72 7 845 1628 11.6 6.8 72 4.8 8.9 299 41 298.8 300.1 288.9 320.4 7.35 8 801 2073 8.2 5.6 84 2.6 6.8 283 38 299.8 301.1 289.0 320.9 7.14 9 796 2125 9.0 3.0 66 6.0 5.8 281 37 301.2 302.3 288.4 319.0 5.97 10 786 2230 9.8 1.8 57 8.0 5.5 280 38 303.1 304.1 288.7 319.9 5.55 11 774 2358 9.4 1.4 57 8.0 5.2 280 38 304.0 305.0 288.9 320.6 5.47 12 771 2390 9.8 -0.2 50 10.0 4.6 280 39 304.8 305.7 288.6 319.7 4.89 13 746 2663 8.0 -4.0 42 12.0 2.3 287 40 305.7 306.4 287.9 317.5 3.81 14 731 2830 6.8 -5.2 42 12.0 1.3 286 41 306.2 306.9 287.8 317.2 3.55 15 724 2909 7.4 -8.6 31 16.0 0.4 283 42 307.7 308.2 287.6 316.4 2.76 16 702 3163 5.2 -10.8 30 16.0 -1.3 271 43 308.0 308.4 287.3 315.6 2.39 17 700 3186 5.4 -12.6 26 18.0 -1.7 270 43 308.5 308.9 287.1 315.1 2.07 18 696 3233 5.4 -19.6 14 25.0 -3.0 269 44 309.0 309.2 286.3 312.8 1.16 19 692 3280 5.2 -21.8 12 27.0 -3.5 268 45 309.3 309.4 286.2 312.5 0.96 20 682 3398 4.8 -25.2 9 30.0 -4.1 266 46 310.1 310.2 286.2 312.6 0.72 21 678 3446 4.6 -20.4 14 25.0 -3.7 265 47 310.4 310.6 286.8 314.1 1.11 22 661 3652 3.0 -16.0 23 19.0 -3.9 260 51 310.9 311.2 287.5 316.3 1.66 23 631 4026 0.2 -17.8 24 18.0 -6.0 263 55 311.8 312.1 287.7 316.8 1.49 24 614 4244 -0.9 -22.9 17 22.0 -7.5 265 57 313.0 313.2 287.5 316.3 0.99 25 603 4387 -2.3 -13.3 43 11.0 -6.5 264 58 313.0 313.4 288.9 320.4 2.27 26 574 4776 -5.5 -16.5 42 11.0 -9.2 261 59 313.7 314.1 288.6 319.7 1.83 27 565 4899 -6.3 -20.3 32 14.0 -10.6 260 59 314.2 314.4 288.3 318.7 1.35 28 547 5151 -8.5 -20.5 37 12.0 -12.1 256 59 314.5 314.8 288.5 319.1 1.37 29 538 5280 -9.7 -17.7 52 8.0 -12.3 254 59 314.6 314.9 288.9 320.4 1.77 30 529 5409 -10.7 -19.7 48 9.0 -13.4 251 59 314.9 315.2 288.7 319.9 1.52 31 526 5453 -10.9 -16.9 61 6.0 -12.9 251 59 315.1 315.5 289.2 321.5 1.93 32 500 5840 -14.1 -18.5 69 4.4 -15.4 260 67 315.8 316.2 289.3 321.8 1.78 33 487 6039 -15.9 -18.8 78 2.9 -16.7 264 68 316.0 316.4 289.3 322.0 1.78 34 465 6386 -18.5 -20.5 84 2.0 -19.0 270 70 317.0 317.3 289.5 322.4 1.61 35 457 6516 -19.1 -21.2 83 2.1 -19.7 272 71 317.8 318.1 289.7 323.0 1.54 36 452 6598 -18.9 -21.0 83 2.1 -19.5 273 71 319.1 319.4 290.1 324.4 1.59 37 400 7500 -23.7 -26.7 76 3.0 -24.4 280 70 324.2 324.4 291.2 328.0 1.08 38 396 7573 -24.3 -27.3 76 3.0 -24.9 280 70 324.3 324.5 291.2 328.0 1.03 39 348 8500 -31.5 -35.2 70 3.7 -32.0 277 69 326.8 326.9 291.4 328.8 0.55 40 318 9130 -37.3 -38.6 88 1.3 -37.4 270 65 327.3 327.4 291.4 328.9 0.43 41 316 9174 -37.5 -41.8 64 4.3 -37.9 269 65 327.6 327.7 291.4 328.8 0.31 42 313 9239 -38.1 -40.8 76 2.7 -38.4 268 65 327.7 327.7 291.4 329.0 0.35 43 308 9350 -38.7 -39.8 89 1.1 -38.8 265 64 328.3 328.4 291.6 329.8 0.39 44 304 9440 -39.3 -41.7 78 2.4 -39.5 262 64 328.7 328.8 291.7 330.0 0.32 45 300 9530 -40.1 -41.9 83 1.8 -40.2 260 64 328.8 328.9 291.7 330.1 0.32 46 296 9622 -40.7 -42.0 87 1.3 -40.8 260 64 329.3 329.3 291.9 330.5 0.32 47 294 9668 -41.3 -42.8 85 1.5 -41.4 260 64 329.0 329.1 291.7 330.2 0.30 48 291 9738 -41.3 -44.2 73 2.9 -41.5 260 64 330.0 330.1 292.0 331.0 0.26 49 287 9833 -41.9 -44.8 73 2.9 -42.1 260 65 330.5 330.5 292.1 331.4 0.25 50 285 9880 -42.1 -46.9 59 4.8 -42.4 261 66 330.8 330.9 292.2 331.6 0.20 51 282 9952 -42.5 -48.5 52 6.0 -42.9 261 67 331.3 331.3 292.2 331.9 0.17 52 279 10025 -42.7 -48.7 52 6.0 -43.0 261 68 332.0 332.0 292.4 332.6 0.16 53 273 10172 -43.7 -49.7 51 6.0 -44.0 262 70 332.6 332.6 292.6 333.2 0.15 54 265 10372 -45.3 -51.3 51 6.0 -45.6 263 73 333.1 333.1 292.7 333.6 0.13 55 250 10760 -48.9 -52.2 68 3.3 -49.0 265 78 333.4 333.4 292.7 333.9 0.12 56 247 10839 -49.7 -52.7 71 3.0 -49.8 266 79 333.3 333.3 292.7 333.8 0.12 57 242 10972 -50.9 -53.8 71 2.9 -51.0 266 80 333.5 333.5 292.7 333.9 0.10 58 200 12180 -60.9 -65.7 53 4.8 -61.0 275 92 336.3 336.3 293.4 336.4 0.03 59 171 13133 -68.5 -73.3 50 4.8 -68.6 280 96 339.1 339.1 294.1 339.1 0.01 60 159 13564 -72.1 -76.9 48 4.8 -72.1 285 88 340.2 340.2 294.4 340.2 0.01 61 150 13910 -67.9 -79.9 16 12.0 -67.9 285 66 353.1 353.1 297.3 353.1 0.00 62 100 16400 -62.1 -86.1 3 24.0 -62.3 270 37 407.7 407.7 306.2 407.8 0.00 63 86 17325 -66.5 -88.5 3 22.0 -66.7 256 39 416.8 416.8 307.3 416.8 0.00 64 74 18234 -67.9 -88.9 3 21.0 -68.1 245 33 432.2 432.2 309.1 432.2 0.00 65 70 18570 -66.5 -88.5 3 22.0 -66.7 245 22 442.1 442.1 310.1 442.1 0.00 66 64 19115 -63.9 -87.9 2 24.0 -64.2 233 15 459.3 459.3 311.7 459.3 0.00 67 61 19408 -64.3 -88.3 2 24.0 -64.6 235 16 464.8 464.8 312.2 464.8 0.00 68 59 19612 -64.3 -88.3 2 24.0 -64.6 240 19 469.2 469.2 312.5 469.2 0.00 69 58 19717 -61.3 -87.3 2 26.0 -61.7 243 21 478.3 478.3 313.3 478.3 0.00 70 55 20045 -62.3 -88.3 2 26.0 -62.7 269 12 483.3 483.3 313.7 483.3 0.00 71 55 20045 -59.3 -87.3 1 28.0 -59.9 269 12 490.2 490.2 314.2 490.2 0.00 72 54 20160 -58.7 -86.7 2 28.0 -59.3 287 9 494.2 494.2 314.5 494.2 0.00 73 50 20640 -60.9 -86.9 2 26.0 -61.4 200 15 500.0 500.0 314.9 500.0 0.00 74 48 20894 -60.9 -86.9 2 26.0 -61.4 197 13 505.8 505.8 315.4 505.9 0.00 75 44 21438 -58.7 -86.7 2 28.0 -59.5 267 10 524.0 524.0 316.5 524.0 0.00 76 38 22356 -60.1 -87.1 2 27.0 -60.8 224 4 542.8 542.8 317.7 542.9 0.01 77 33 23238 -59.1 -87.1 1 28.0 -60.0 171 7 567.8 567.8 319.0 567.9 0.01 78 30 23840 -56.3 -85.3 1 29.0 -57.7 120 5 591.2 591.2 320.2 591.2 0.01 79 28 24279 -57.1 -86.1 1 29.0 -58.5 132 3 600.7 600.7 320.6 600.8 0.01 80 25 25003 -55.1 -85.1 1 30.0 -56.9 97 5 626.2 626.3 321.7 626.3 0.01 81 23 25537 -55.3 -85.3 1 30.0 -57.2 65 7 640.8 640.8 322.3 640.9 0.01 82 21 26123 -52.3 -84.3 1 32.0 -55.1 30 10 666.7 666.7 323.3 666.8 0.02 83 20 26440 -52.1 -84.1 1 32.0 -55.0 85 12 676.7 676.7 323.7 676.8 0.02 84 19 26772 -51.5 -83.5 1 32.0 -54.6 84 10 688.6 688.6 324.1 688.7 0.02 85 17 27494 -51.9 -83.9 1 32.0 -55.2 95 5 709.5 709.5 324.7 709.7 0.02 86 15 28305 -51.5 -83.5 1 32.0 -55.2 41 10 736.7 736.7 325.6 736.9 0.02 87 14 28758 -46.7 -81.7 1 35.0 -52.4 106 11 767.7 767.7 326.4 768.0 0.04 88 13 29249 -47.3 -82.3 1 35.0 -53.0 176 13 782.0 782.1 326.8 782.4 0.04 89 10 31010 -40.5 -79.5 1 39.0 -50.5 245 8 868.4 868.4 328.8 869.1 0.07 90 9.5 31360 -41.1 -80.1 1 39.0 -51.0 251 8 878.9 879.0 329.0 879.6 0.07 91 7.0 33440 -40.7 -79.7 1 39.0 -52.3 290 6 960.8 960.9 330.5 961.9 0.10 92 6.8 33638 -40.1 -80.1 1 40.0 -52.2 971.3 971.4 330.7 972.4 0.10 93 6.5 33949 -35.7 -78.7 0 43.0 -50.8 1002.5 1002.6 331.2 1004.0 0.13 94 6.2 34278 -34.1 -77.1 0 43.0 -50.4 1023.0 1023.1 331.5 1025.1 0.17 95 6.0 34508 -34.1 -77.1 0 43.0 -50.6 1032.6 1032.7 331.7 1034.8 0.18 TRP 159 13564 -72.1 -76.9 48 4.8 -72.1 285 88 340.2 340.2 294.4 340.2 0.01 WND 171 13133 -68.5 -73.3 50 4.8 -68.6 280 96 339.1 339.1 294.1 339.1 0.01 Sounding variables and indices 1000-500 mb thick: 5642.00 m Freezing level: 627.91 mb = 4065.17 m = 13337.02 ft Wetbulb zero: 718.62 mb = 2970.65 m = 9746.12 ft Precipitable water: 1.09 inches Sfc-500 mean rel hum: 49.72 % Est. max temperature: 25.70 C = 78.25 F Sfc-Lift cond lev (LCL): 900.17 mb = 1096.23 m = 3596.52 ft T: 13.60 C 700-500 lapse rate: 7.35 C/km ThetaE index: 8.15 C Layer 771.0- 682.0 mb Conv cond level (CCL): 812.69 mb = 1952.59 m = 6406.04 ft Mean mixing ratio: 8.98 g/kg Conv temperature: 27.48 C = 81.47 F Cap Strength: 5.46 C Lifted Index: 2.05 C Risk: None Lifted Index @300 mb: 6.46 C Lifted Index @700 mb: 4.79 C Showalter Index: 1.64 C Risk: Showers probable Total Totals Index: 47.60 C Risk: Scattered moderate thunderstorms Vertical Totals Index: 25.90 C Cross Totals Index: 21.70 C K Index: 15.50 Risk: < 20 % chance of thunderstorms Sweat Index: 240.20 Risk: None Energy Index: 0.16 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 2.35 J/kg Max Up Vert Vel: 2.17 m/s Conv Inhibition (B-): 52931.00 J/kg Cap Strength: 5.38 C Lift Cond Lev (LCL): 872.31 mb = 1360.96 m = 4465.04 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 303 at 34 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 98 310 10 7.7 -6.4 | 120 24 -21.1 12.4 1 1000 198 320 17 10.9 -13.0 | 108 19 -17.8 5.8 2 988 305 325 21 12.0 -17.2 | 95 17 -16.7 1.6 3 953 610 325 19 10.9 -15.6 | 100 18 -17.9 3.2 4 925 866 320 27 17.4 -20.7 | 81 12 -11.4 -1.9 5 920 914 315 28 19.8 -19.8 | 84 9 -9.0 -1.0 6 887 1219 310 39 29.9 -25.1 | 350 6 1.1 -6.3 7 850 1579 300 41 35.5 -20.5 | 284 7 6.7 -1.7 8 825 1829 295 41 37.2 -17.3 | 260 9 8.4 1.5 9 795 2134 280 37 36.4 -6.4 | 212 15 7.7 12.4 10 766 2438 280 39 38.4 -6.8 | 219 15 9.6 12.0 11 738 2743 290 41 38.5 -14.0 | 244 11 9.8 4.8 12 700 3186 270 43 43.0 -0.0 | 217 24 14.2 18.8 13 659 3658 260 51 50.2 8.9 | 218 35 21.5 27.7 14 610 4267 265 58 57.8 5.1 | 231 38 29.0 23.9 15 565 4877 260 59 58.1 10.2 | 225 41 29.3 29.1 16 523 5486 250 59 55.4 20.2 | 214 47 26.7 39.0 17 500 5840 260 67 66.0 11.6 | 231 48 37.2 30.4 18 483 6096 265 68 67.7 5.9 | 238 46 39.0 24.7 19 445 6706 275 72 71.7 -6.3 | 254 45 43.0 12.5 20 400 7500 280 70 68.9 -12.2 | 261 41 40.2 6.7 21 393 7620 280 70 68.9 -12.2 | 261 41 40.2 6.7 22 361 8230 280 70 68.9 -12.2 | 261 41 40.2 6.7 23 317 9144 270 65 65.0 -0.0 | 243 41 36.2 18.8 24 300 9530 260 64 63.0 11.1 | 229 45 34.3 29.9 25 290 9754 260 64 63.0 11.1 | 229 45 34.3 29.9 26 250 10760 265 78 77.7 6.8 | 242 55 48.9 25.6 27 200 12180 275 92 91.6 -8.0 | 260 64 62.9 10.8 28 171 13133 280 96 94.5 -16.7 | 268 66 65.8 2.1 29 163 13411 280 96 94.5 -16.7 | 268 66 65.8 2.1 30 159 13564 285 88 85.0 -22.8 | 274 56 56.2 -4.0 31 155 13716 285 93 89.8 -24.1 | 275 61 61.1 -5.3 32 150 13910 285 66 63.8 -17.1 | 267 35 35.0 1.7 33 133 14630 275 52 51.8 -4.5 | 238 27 23.0 14.3 34 127 14935 275 63 62.8 -5.5 | 249 37 34.0 13.3 35 121 15240 270 62 62.0 -0.0 | 240 38 33.2 18.8 36 109 15850 285 49 47.3 -12.7 | 252 20 18.6 6.1 37 100 16400 270 37 37.0 -0.0 | 204 21 8.2 18.8 38 94 16764 270 37 37.0 -0.0 | 204 21 8.2 18.8 39 85 17374 255 39 37.7 10.1 | 197 30 8.9 28.9 40 81 17678 265 34 33.9 3.0 | 193 22 5.1 21.8 41 77 17983 245 26 23.6 11.0 | 170 30 -5.2 29.8 42 73 18288 245 34 30.8 14.4 | 184 33 2.0 33.2 43 70 18570 245 22 19.9 9.3 | 163 29 -8.8 28.1 44 70 18593 250 38 35.7 13.0 | 192 33 6.9 31.8 45 63 19202 230 12 9.2 7.7 | 144 33 -19.6 26.5 46 57 19812 245 22 19.9 9.3 | 163 29 -8.8 28.1 47 54 20117 275 10 10.0 -0.9 | 134 26 -18.8 17.9 48 52 20422 350 3 0.5 -3.0 | 119 32 -28.2 15.9 49 50 20640 200 15 5.1 14.1 | 144 41 -23.6 32.9 50 49 20726 180 10 0.0 10.0 | 135 41 -28.8 28.8 51 47 21031 210 16 8.0 13.9 | 148 39 -20.8 32.7 52 45 21336 265 9 9.0 0.8 | 135 28 -19.8 19.6 53 43 21641 270 11 11.0 -0.0 | 137 26 -17.8 18.8 54 39 22250 220 1 0.6 0.8 | 125 34 -28.1 19.6 55 37 22555 230 10 7.7 6.4 | 140 33 -21.1 25.2 56 30 23840 120 5 -4.3 2.5 | 123 39 -33.1 21.3 57 28 24384 135 3 -2.1 2.1 | 124 37 -30.9 20.9 58 21 26213 25 10 -4.2 -9.1 | 106 34 -33.0 9.7 59 20 26440 85 12 -12.0 -1.0 | 114 44 -40.7 17.8 60 20 26518 75 10 -9.7 -2.6 | 113 42 -38.4 16.2 61 18 27127 95 10 -10.0 0.9 | 117 43 -38.7 19.7 62 17 27432 100 4 -3.9 0.7 | 121 38 -32.7 19.5 63 15 28346 40 10 -6.4 -7.7 | 108 37 -35.2 11.1 64 13 29261 175 13 -1.1 13.0 | 137 44 -29.9 31.8 65 12 29566 185 10 0.9 10.0 | 136 40 -27.9 28.8 66 12 29870 90 2 -2.0 0.0 | 121 36 -30.8 18.8 67 11 30175 35 10 -5.7 -8.2 | 107 36 -34.5 10.6 68 10 31010 245 8 7.3 3.4 | 136 31 -21.5 22.2 69 7 33440 290 6 5.6 -2.1 | 126 29 -23.1 16.8 Wind Parameters Mean winds (0-6000m): 273.2 at 45.8 knts Storm direction: 303.2 at 34.4 knts Shear (0-3000m) pos: 2.3 neg: 5.7 tot: 8.0 10-3/s Storm rel Dir Shear (0-3000m): 100.5 deg Storm rel helicity (0-3000m) pos: 27.4 neg: -140.0 tot: -112.6 m^2/s^2 ave: -37.5 10^-3 m/s^2 rel: -0.53 Storm rel vorticity (0-3000m) horiz: 12.8 stream: -6.8 10^-3/s Energy-Hel index: 0.00 Bulk Rich Number: 0.01 Bulk Shear: 179.14 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 ------------------------------------------------------------------------------- 500 323 18 103 18| 10.0 0.0 10.0| 5.3 -42.9 -37.6 -75.3 -0.54| 13.5 -7.4 1000 320 22 97 14| 5.0 8.5 13.6| 5.3 -69.9 -64.6 -64.6 -0.57| 15.5 -8.9 1500 313 28 87 8| 3.3 8.6 12.0| 5.3 -87.4 -82.1 -54.8 -0.69| 14.4 -9.9 2000 307 31 94 4| 2.5 6.9 9.4| 5.3-115.9-110.6 -55.3 -0.73| 14.2-10.3 2500 301 33 162 2| 2.7 5.5 8.3| 21.2-117.8 -96.6 -38.6 -0.59| 12.6 -7.5 3000 297 34 205 4| 2.3 5.7 8.0| 27.4-140.0-112.6 -37.5 -0.53| 12.8 -6.8 4000 286 38 223 12| 2.3 5.8 8.1| 84.3-149.5 -65.3 -16.3 -0.37| 12.2 -4.5 5000 279 42 226 18| 1.8 5.2 7.1|104.6-219.9-115.2 -23.0 -0.37| 10.9 -4.0 6000 273 46 226 24| 2.8 4.7 7.5|340.8-278.7 62.1 10.4 -0.19| 11.3 -2.2 Wrote GIF file: /home/apache/climate/data/raob//KIAD/skewt/KIAD.skewt.20250420.12.gif