UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025041912.upa.cvt Date: 1200Z 19 APR 25 Searching for KIAD... Searching the city database file for: KIAD ... Date:1200Z 19 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 1007 98 20.2 11.2 56 9.0 14.7 210 10 292.8 294.2 287.6 316.6 8.32 1 1002 134 20.4 10.4 53 10.0 14.4 210 14 293.4 294.8 287.5 316.1 7.92 2 1000 149 20.2 10.2 53 10.0 14.2 210 16 293.4 294.7 287.3 315.8 7.83 3 975 367 18.4 10.4 60 8.0 13.6 220 21 293.7 295.1 287.8 317.1 8.14 4 971 402 18.6 9.6 56 9.0 13.3 223 21 294.2 295.6 287.6 316.5 7.74 5 970 411 19.0 9.0 52 10.0 13.1 224 21 294.7 296.0 287.5 316.2 7.44 6 968 429 21.4 7.4 40 14.0 13.3 225 21 297.3 298.5 287.7 316.9 6.68 7 958 519 22.2 6.2 35 16.0 13.0 233 20 299.0 300.1 287.9 317.4 6.21 8 925 823 21.0 4.0 33 17.0 11.5 275 23 300.8 301.8 287.8 317.3 5.51 9 860 1447 15.4 4.4 48 11.0 9.3 287 35 301.3 302.4 288.6 319.5 6.10 10 850 1546 14.6 5.6 55 9.0 9.5 290 37 301.4 302.7 289.2 321.5 6.72 11 827 1777 12.6 8.1 74 4.5 9.9 294 43 301.7 303.2 290.6 326.1 8.22 12 802 2034 10.6 7.7 82 2.9 8.9 285 39 302.2 303.8 290.8 326.8 8.25 13 798 2076 10.6 7.2 79 3.4 8.6 283 38 302.7 304.1 290.7 326.5 8.01 14 793 2128 12.0 5.0 62 7.0 8.0 280 37 304.7 306.0 290.5 325.6 6.91 15 792 2139 12.6 4.6 58 8.0 8.0 280 37 305.5 306.7 290.5 325.8 6.73 16 789 2171 12.8 3.8 54 9.0 7.8 279 36 306.0 307.2 290.4 325.4 6.38 17 785 2214 13.4 4.4 54 9.0 8.2 277 34 307.1 308.3 291.0 327.5 6.69 18 782 2246 13.2 5.2 58 8.0 8.6 276 33 307.2 308.5 291.4 328.9 7.11 19 756 2530 12.8 -0.2 41 13.0 5.9 267 26 309.8 310.7 290.3 325.3 4.99 20 710 3054 8.6 -2.4 46 11.0 3.0 267 33 310.7 311.6 290.2 324.9 4.52 21 700 3171 8.4 -7.6 31 16.0 1.1 270 35 311.8 312.4 289.2 321.6 3.08 22 699 3183 8.6 -8.4 29 17.0 1.0 270 35 312.1 312.7 289.2 321.4 2.90 23 689 3301 8.0 -7.0 34 15.0 1.1 270 37 312.8 313.4 289.8 323.3 3.28 24 655 3716 5.8 -18.2 16 24.0 -2.9 270 42 314.8 315.1 288.6 319.5 1.39 25 573 4789 -4.1 -19.1 30 15.0 -9.0 270 42 315.5 315.8 288.9 320.4 1.47 26 562 4941 -6.1 -17.1 41 11.0 -9.8 270 42 314.9 315.2 289.0 320.8 1.78 27 552 5081 -6.9 -20.9 32 14.0 -11.1 269 43 315.6 315.8 288.7 320.0 1.31 28 540 5252 -8.7 -20.7 37 12.0 -12.3 268 45 315.4 315.7 288.8 320.0 1.36 29 525 5468 -11.5 -17.5 61 6.0 -13.4 267 46 314.6 315.0 288.9 320.7 1.84 30 521 5527 -11.9 -17.9 61 6.0 -13.7 267 47 314.8 315.1 289.0 320.8 1.79 31 519 5556 -12.1 -17.1 66 5.0 -13.7 266 47 314.9 315.3 289.1 321.3 1.93 32 517 5586 -12.1 -19.1 56 7.0 -14.2 266 47 315.3 315.6 288.9 320.7 1.63 33 513 5645 -13.1 -18.1 66 5.0 -14.6 266 48 314.7 315.1 288.9 320.7 1.79 34 509 5705 -13.1 -22.1 47 9.0 -15.6 266 48 315.5 315.7 288.6 319.8 1.28 35 503 5795 -14.3 -17.2 79 2.9 -15.2 265 49 315.1 315.4 289.2 321.6 1.97 36 500 5840 -14.5 -17.2 80 2.7 -15.3 270 47 315.4 315.7 289.3 321.9 1.98 37 481 6134 -17.1 -18.7 87 1.6 -17.6 270 46 315.7 316.0 289.3 321.7 1.82 38 479 6165 -17.1 -18.9 86 1.8 -17.6 271 46 316.0 316.4 289.3 322.0 1.79 39 478 6181 -15.5 -17.9 82 2.4 -16.2 271 46 318.2 318.6 290.2 324.8 1.96 40 476 6213 -15.3 -17.7 82 2.4 -16.0 271 46 318.8 319.2 290.4 325.5 2.00 41 455 6554 -17.7 -19.4 87 1.7 -18.2 276 44 320.0 320.3 290.6 326.1 1.81 42 443 6754 -19.1 -21.7 80 2.6 -19.8 278 43 320.7 321.0 290.5 325.9 1.52 43 400 7510 -24.1 -26.5 80 2.4 -24.6 285 48 323.7 323.9 291.0 327.5 1.10 44 398 7546 -24.5 -27.1 79 2.6 -25.1 285 48 323.6 323.8 290.9 327.3 1.04 45 388 7730 -25.7 -27.8 82 2.1 -26.1 284 48 324.4 324.6 291.1 327.9 1.00 46 377 7937 -27.3 -28.8 87 1.5 -27.6 283 47 325.0 325.2 291.2 328.3 0.94 47 358 8306 -30.5 -33.2 77 2.7 -30.9 281 47 325.5 325.6 291.1 327.9 0.65 48 345 8566 -32.7 -35.2 78 2.5 -33.0 279 46 326.0 326.1 291.2 328.0 0.55 49 331 8855 -35.3 -36.8 86 1.5 -35.5 277 46 326.3 326.4 291.2 328.1 0.49 50 328 8919 -35.7 -38.1 79 2.4 -36.0 277 45 326.6 326.7 291.2 328.2 0.44 51 320 9089 -37.3 -39.1 83 1.8 -37.5 275 45 326.7 326.8 291.2 328.2 0.40 52 315 9197 -38.1 -41.2 73 3.1 -38.4 276 46 327.1 327.1 291.2 328.3 0.33 53 312 9263 -38.5 -41.1 76 2.6 -38.7 278 47 327.4 327.5 291.3 328.7 0.34 54 305 9418 -40.1 -43.0 74 2.9 -40.4 282 49 327.3 327.4 291.2 328.4 0.28 55 300 9530 -41.1 -46.1 58 5.0 -41.5 285 51 327.4 327.5 291.2 328.2 0.20 56 250 10740 -51.9 -57.9 48 6.0 -52.1 290 62 328.9 328.9 291.5 329.2 0.06 57 200 12150 -64.1 -67.7 61 3.6 -64.1 315 70 331.2 331.3 292.1 331.3 0.02 58 187 12560 -65.6 -69.9 54 4.4 -65.6 310 82 335.3 335.3 293.2 335.4 0.02 59 162 13425 -68.7 -74.7 42 6.0 -68.7 290 56 344.1 344.1 295.3 344.1 0.01 60 150 13890 -65.3 -81.3 9 16.0 -65.4 290 64 357.6 357.6 298.2 357.6 0.00 61 100 16410 -61.7 -87.7 2 26.0 -61.9 295 31 408.5 408.5 306.3 408.5 0.00 62 92 16923 -65.1 -89.1 2 24.0 -65.3 290 32 411.6 411.6 306.7 411.7 0.00 63 87 17267 -61.1 -88.1 2 27.0 -61.4 272 21 426.3 426.3 308.4 426.3 0.00 64 72 18420 -69.9 -89.9 4 20.0 -70.0 301 13 431.4 431.4 309.0 431.4 0.00 65 72 18420 -69.9 -90.9 3 21.0 -70.0 301 13 431.4 431.4 309.0 431.4 0.00 66 71 18503 -69.3 -91.3 3 22.0 -69.4 296 15 434.4 434.4 309.3 434.4 0.00 67 71 18503 -65.5 -89.5 2 24.0 -65.7 296 15 442.5 442.5 310.1 442.5 0.00 68 70 18590 -64.9 -89.9 2 25.0 -65.1 290 18 445.5 445.5 310.4 445.5 0.00 69 61 19428 -63.9 -88.9 2 25.0 -64.2 260 20 465.7 465.7 312.3 465.7 0.00 70 58 19735 -65.9 -89.9 2 24.0 -66.1 277 19 467.9 467.9 312.5 467.9 0.00 71 56 19948 -63.9 -88.9 2 25.0 -64.2 299 21 477.2 477.2 313.2 477.2 0.00 72 53 20284 -64.7 -89.7 2 25.0 -65.0 343 16 482.9 482.9 313.7 482.9 0.00 73 50 20640 -62.9 -89.9 1 27.0 -63.3 35 13 495.3 495.3 314.6 495.3 0.00 74 46 21155 -62.3 -89.3 2 27.0 -62.8 97 11 508.7 508.7 315.5 508.7 0.00 75 44 21433 -58.7 -88.7 1 30.0 -59.5 154 6 524.0 524.0 316.5 524.0 0.00 76 40 22029 -60.7 -88.7 1 28.0 -61.3 232 2 533.4 533.4 317.1 533.4 0.00 77 36 22691 -57.5 -87.5 1 30.0 -58.5 63 10 558.0 558.0 318.5 558.0 0.01 78 35 22868 -58.9 -87.9 1 29.0 -59.8 72 10 558.9 558.9 318.6 558.9 0.00 79 32 23433 -57.5 -88.5 1 31.0 -58.6 102 10 577.1 577.1 319.5 577.2 0.00 80 30 23840 -59.1 -88.1 1 29.0 -60.1 145 12 583.5 583.5 319.8 583.6 0.01 81 27 24505 -55.9 -87.9 1 32.0 -57.5 174 6 610.4 610.4 321.1 610.4 0.01 82 24 25255 -55.1 -87.1 1 32.0 -57.0 108 3 633.6 633.6 322.0 633.7 0.01 83 23 25526 -55.9 -86.9 1 31.0 -57.7 122 6 639.0 639.0 322.3 639.1 0.01 84 21 26106 -54.9 -86.9 1 32.0 -57.1 157 16 658.9 658.9 323.0 658.9 0.01 85 20 26420 -50.9 -85.9 1 35.0 -54.1 235 8 680.4 680.4 323.8 680.5 0.01 86 19 26754 -50.3 -85.3 1 35.0 -53.8 243 8 692.3 692.3 324.2 692.4 0.01 87 16 27879 -49.1 -85.1 1 36.0 -53.5 294 1 731.1 731.1 325.4 731.2 0.02 88 15 28302 -50.1 -85.1 1 35.0 -54.3 280 9 741.4 741.4 325.7 741.5 0.02 89 13 29243 -47.3 -84.3 1 37.0 -53.0 50 10 782.0 782.1 326.8 782.3 0.02 90 12 29771 -48.7 -84.7 1 36.0 -54.1 111 9 795.2 795.2 327.1 795.4 0.03 91 10 30980 -44.7 -83.7 1 39.0 -52.5 200 5 852.7 852.7 328.5 853.0 0.04 92 7.8 32655 -40.3 -81.3 0 41.0 -51.6 221 4 933.1 933.2 330.1 933.9 0.07 93 7.3 33105 -41.5 -82.5 0 41.0 -52.5 226 3 946.1 946.1 330.3 946.7 0.06 94 7.0 33390 -40.9 -81.9 0 41.0 -52.4 230 3 960.0 960.0 330.5 960.7 0.07 95 6.4 34004 -37.3 -79.3 0 42.0 -51.4 1000.2 1000.2 331.2 1001.5 0.12 TRP 162 13425 -68.7 -74.7 42 6.0 -68.7 290 56 344.1 344.1 295.3 344.1 0.01 WND 187 12560 -65.6 -69.9 54 4.4 -65.6 310 82 335.3 335.3 293.2 335.4 0.02 Sounding variables and indices 1000-500 mb thick: 5691.00 m Freezing level: 606.96 mb = 4344.51 m = 14253.47 ft Wetbulb zero: 679.83 mb = 3411.24 m = 11191.60 ft Precipitable water: 1.01 inches Sfc-500 mean rel hum: 42.04 % Est. max temperature: 28.77 C = 83.79 F Sfc-Lift cond lev (LCL): 881.13 mb = 1239.12 m = 4065.30 ft T: 17.27 C 700-500 lapse rate: 8.58 C/km ThetaE index: 1.20 C Layer 798.0- 792.0 mb Conv cond level (CCL): 612.24 mb = 4257.55 m = 13968.18 ft Mean mixing ratio: 6.65 g/kg Conv temperature: 42.71 C = 108.87 F Cap Strength: 10.08 C Lifted Index: 3.53 C Risk: None Lifted Index @300 mb: 7.75 C Lifted Index @700 mb: 9.23 C Showalter Index: 1.07 C Risk: Showers probable Total Totals Index: 49.20 C Risk: Scattered heavy thunderstorms Vertical Totals Index: 29.10 C Cross Totals Index: 20.10 C K Index: 18.70 Risk: < 20 % chance of thunderstorms Sweat Index: 192.20 Risk: None Energy Index: 0.19 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 42.85 J/kg Max Up Vert Vel: 9.26 m/s Conv Inhibition (B-): 53225.87 J/kg Cap Strength: 9.98 C Lift Cond Lev (LCL): 782.87 mb = 2236.44 m = 7337.32 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 300 at 27 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 1007 98 210 10 5.0 8.7 | 141 29 -18.3 22.4 1 1000 149 210 16 8.0 13.9 | 151 31 -15.3 27.5 2 982 305 215 22 12.6 18.0 | 161 33 -10.6 31.7 3 948 610 240 19 16.5 9.5 | 164 24 -6.8 23.2 4 925 823 275 23 22.9 -2.0 | 178 12 -0.3 11.7 5 915 914 280 22 21.7 -3.8 | 171 10 -1.6 9.9 6 883 1219 280 29 28.6 -5.0 | 212 10 5.3 8.7 7 850 1546 290 37 34.8 -12.7 | 265 12 11.5 1.0 8 822 1829 295 44 39.9 -18.6 | 286 17 16.6 -4.9 9 792 2134 280 37 36.4 -6.4 | 241 15 13.2 7.3 10 764 2438 270 26 26.0 -0.0 | 191 14 2.7 13.7 11 737 2743 260 27 26.6 4.7 | 190 19 3.3 18.4 12 700 3171 270 35 35.0 -0.0 | 221 18 11.7 13.7 13 658 3658 270 42 42.0 -0.0 | 234 23 18.7 13.7 14 610 4267 270 40 40.0 -0.0 | 231 22 16.7 13.7 15 565 4877 270 42 42.0 -0.0 | 234 23 18.7 13.7 16 503 5791 265 49 48.8 4.3 | 235 31 25.6 18.0 17 500 5840 270 47 47.0 -0.0 | 240 27 23.7 13.7 18 483 6096 270 46 46.0 -0.0 | 239 27 22.7 13.7 19 411 7315 285 41 39.6 -10.6 | 259 17 16.3 3.1 20 400 7510 285 48 46.4 -12.4 | 267 23 23.1 1.3 21 394 7620 285 48 46.4 -12.4 | 267 23 23.1 1.3 22 317 9144 275 45 44.8 -3.9 | 246 24 21.6 9.8 23 300 9530 285 51 49.3 -13.2 | 269 26 26.0 0.5 24 250 10740 290 62 58.3 -21.2 | 282 36 35.0 -7.5 25 200 12150 315 70 49.5 -49.5 | 324 44 26.2 -35.8 26 199 12192 315 70 49.5 -49.5 | 324 44 26.2 -35.8 27 187 12560 310 82 62.8 -52.7 | 315 56 39.6 -39.0 28 180 12802 310 82 62.8 -52.7 | 315 56 39.6 -39.0 29 162 13411 295 52 47.1 -22.0 | 289 25 23.9 -8.3 30 162 13425 290 56 52.6 -19.2 | 281 30 29.4 -5.5 31 150 13890 290 64 60.1 -21.9 | 283 38 36.9 -8.2 32 147 14021 290 71 66.7 -24.3 | 284 45 43.5 -10.6 33 140 14326 290 52 48.9 -17.8 | 279 26 25.6 -4.1 34 133 14630 260 40 39.4 6.9 | 218 26 16.1 20.6 35 121 15240 285 44 42.5 -11.4 | 263 19 19.2 2.3 36 109 15850 290 32 30.1 -10.9 | 248 7 6.8 2.7 37 100 16410 295 31 28.1 -13.1 | 263 5 4.8 0.6 38 99 16459 305 35 28.7 -20.1 | 320 8 5.4 -6.4 39 94 16764 295 30 27.2 -12.7 | 256 4 3.9 1.0 40 90 17069 285 34 32.8 -8.8 | 243 11 9.6 4.9 41 85 17374 265 13 13.0 1.1 | 145 18 -10.3 14.8 42 77 17983 275 10 10.0 -0.9 | 134 18 -13.3 12.8 43 74 18288 310 9 6.9 -5.8 | 116 18 -16.4 7.9 44 70 18590 290 18 16.9 -6.2 | 140 10 -6.3 7.5 45 70 18593 330 10 5.0 -8.7 | 105 19 -18.3 5.0 46 67 18898 295 17 15.4 -7.2 | 130 10 -7.8 6.5 47 60 19507 255 20 19.3 5.2 | 168 19 -3.9 18.9 48 57 19812 285 19 18.4 -4.9 | 151 10 -4.9 8.8 49 54 20117 315 23 16.3 -16.3 | 70 7 -7.0 -2.6 50 52 20422 5 10 -0.9 -10.0 | 99 24 -24.1 3.7 51 50 20640 35 13 -7.5 -10.6 | 96 31 -30.7 3.0 52 49 20726 75 3 -2.9 -0.8 | 116 29 -26.2 12.9 53 47 21031 65 14 -12.7 -5.9 | 102 37 -35.9 7.8 54 45 21336 140 7 -4.5 5.4 | 124 34 -27.8 19.1 55 39 22250 260 1 1.0 0.2 | 122 26 -22.3 13.9 56 37 22555 55 10 -8.2 -5.7 | 104 32 -31.4 8.0 57 30 23774 120 10 -8.7 5.0 | 120 37 -31.9 18.7 58 30 23840 145 12 -6.9 9.8 | 128 38 -30.1 23.5 59 29 24079 130 13 -10.0 8.4 | 124 40 -33.2 22.0 60 28 24384 185 6 0.5 6.0 | 131 30 -22.7 19.7 61 24 25298 105 3 -2.9 0.8 | 119 30 -26.2 14.5 62 22 25908 150 10 -5.0 8.7 | 128 36 -28.3 22.4 63 21 26213 160 19 -6.5 17.9 | 137 43 -29.8 31.5 64 20 26420 235 8 6.6 4.6 | 138 25 -16.7 18.3 65 20 26518 210 10 5.0 8.7 | 141 29 -18.3 22.4 66 17 27432 335 2 0.8 -1.8 | 118 25 -22.4 11.9 67 16 28042 280 1 1.0 -0.2 | 121 26 -22.3 13.5 68 15 28346 280 10 9.8 -1.7 | 132 18 -13.4 12.0 69 12 29566 95 10 -10.0 0.9 | 114 36 -33.2 14.6 70 10 30980 200 5 1.7 4.7 | 130 28 -21.5 18.4 71 7 33390 230 3 2.3 1.9 | 127 26 -21.0 15.6 Wind Parameters Mean winds (0-6000m): 270.5 at 36.0 knts Storm direction: 300.5 at 27.0 knts Shear (0-3000m) pos: 7.7 neg: 3.2 tot: 10.9 10-3/s Storm rel Dir Shear (0-3000m): 74.4 deg Storm rel helicity (0-3000m) pos: 222.8 neg: -96.9 tot: 126.0 m^2/s^2 ave: 42.0 10^-3 m/s^2 rel: 0.22 Storm rel vorticity (0-3000m) horiz: 16.4 stream: 3.5 10^-3/s Energy-Hel index: 0.05 Bulk Rich Number: 0.42 Bulk Shear: 101.85 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 ------------------------------------------------------------------------------- 500 221 19 159 30| 11.8 0.0 11.8|102.8 -0.2 102.6 205.2 0.60| 21.6 12.9 1000 247 21 169 22| 12.7 0.0 12.7|134.9 -3.0 131.9 131.9 0.49| 20.7 10.2 1500 265 25 184 16| 13.0 0.0 13.0|171.3 -3.0 168.3 112.2 0.61| 18.6 11.4 2000 275 29 206 12| 9.8 1.6 11.3|185.4 -46.0 139.4 69.7 0.38| 18.1 6.8 2500 275 29 207 13| 7.8 3.8 11.7|185.4 -96.2 89.2 35.7 0.15| 17.7 2.7 3000 273 29 205 14| 7.7 3.2 10.9|222.8 -96.9 126.0 42.0 0.22| 16.4 3.5 4000 272 32 214 15| 6.7 2.4 9.1|255.9-101.6 154.3 38.6 0.25| 13.6 3.4 5000 271 34 219 17| 5.3 1.9 7.2|264.3-103.3 161.1 32.2 0.25| 11.3 2.8 6000 270 36 224 18| 4.5 1.7 6.2|285.0-106.0 179.1 29.8 0.25| 10.3 2.5 Wrote GIF file: /home/apache/climate/data/raob//KIAD/skewt/KIAD.skewt.20250419.12.gif