UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025042112.upa.cvt Date: 1200Z 21 APR 25 Searching for KIAD... Searching the city database file for: KIAD ... Date:1200Z 21 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 14.2 5.2 55 9.0 9.5 160 5 286.2 287.2 282.0 301.6 5.47 1 1005 166 13.8 3.8 51 10.0 8.7 160 8 286.5 287.4 281.6 300.7 5.00 2 1000 204 13.4 3.4 51 10.0 8.3 160 9 286.5 287.4 281.5 300.4 4.88 3 965 503 10.8 2.8 58 8.0 6.8 155 22 286.9 287.7 281.6 300.6 4.85 4 952 616 11.6 -0.4 43 12.0 5.9 155 29 288.8 289.5 281.3 300.0 3.90 5 949 642 12.2 1.2 47 11.0 6.8 156 29 289.7 290.4 282.3 302.3 4.39 6 944 687 12.0 6.0 67 6.0 8.8 158 29 289.9 291.0 284.4 307.6 6.22 7 936 758 11.8 9.3 85 2.5 10.3 161 30 290.4 291.8 286.3 312.7 7.87 8 929 821 11.6 8.1 79 3.5 9.6 164 30 290.8 292.1 285.9 311.6 7.31 9 925 857 11.4 5.4 67 6.0 8.2 165 30 291.0 292.0 284.7 308.4 6.08 10 923 875 11.4 4.4 62 7.0 7.7 165 30 291.1 292.2 284.4 307.5 5.68 11 917 930 11.4 4.4 62 7.0 7.7 166 29 291.7 292.7 284.6 308.2 5.72 12 911 985 11.4 9.2 86 2.2 10.1 171 29 292.2 293.7 287.2 315.2 8.04 13 896 1124 10.6 9.9 95 0.7 10.2 182 28 292.8 294.3 287.9 317.3 8.57 14 893 1152 11.0 10.8 99 0.2 10.9 184 27 293.5 295.1 288.6 319.7 9.14 15 882 1255 11.6 11.6 100 0.0 11.6 192 27 295.2 296.9 289.8 323.3 9.77 16 859 1477 11.0 11.0 100 0.0 11.0 203 28 296.8 298.5 290.2 324.7 9.64 17 852 1545 12.0 12.0 100 0.0 12.0 208 29 298.5 300.4 291.4 328.8 10.40 18 850 1565 11.8 11.8 100 0.0 11.8 210 29 298.5 300.4 291.3 328.5 10.28 19 828 1784 10.6 10.5 99 0.1 10.6 206 30 299.5 301.3 291.1 327.9 9.67 20 824 1825 10.4 9.3 93 1.1 9.7 205 30 299.7 301.3 290.6 326.0 8.96 21 795 2122 8.2 8.2 100 0.0 8.2 214 25 300.4 302.0 290.5 325.8 8.62 22 791 2164 8.2 6.0 86 2.2 6.9 216 25 300.9 302.2 289.6 322.9 7.43 23 785 2227 8.0 6.0 87 2.0 6.9 219 26 301.3 302.7 289.8 323.6 7.49 24 764 2450 5.8 5.6 99 0.2 5.7 230 27 301.3 302.6 289.8 323.5 7.48 25 763 2461 5.8 5.3 97 0.5 5.5 231 27 301.4 302.7 289.8 323.2 7.34 26 760 2493 5.8 4.6 92 1.2 5.1 232 26 301.7 303.0 289.6 322.6 7.01 27 753 2569 6.6 0.6 65 6.0 3.5 234 24 303.4 304.4 288.6 319.5 5.31 28 752 2580 6.2 1.2 70 5.0 3.6 235 24 303.1 304.1 288.7 319.9 5.55 29 750 2602 7.2 -2.8 49 10.0 2.4 235 24 304.4 305.2 287.8 317.1 4.15 30 746 2646 8.0 -7.0 34 15.0 1.3 237 23 305.7 306.3 287.2 315.2 3.03 31 743 2679 8.0 -8.0 31 16.0 1.0 238 22 306.1 306.6 287.1 314.9 2.81 32 741 2701 8.2 -10.8 25 19.0 0.4 239 22 306.5 307.0 286.6 313.7 2.26 33 717 2973 7.2 -14.8 19 22.0 -1.2 245 24 308.3 308.7 286.6 313.8 1.69 34 700 3170 5.4 -13.6 24 19.0 -1.9 250 27 308.5 308.8 286.9 314.6 1.91 35 657 3683 0.8 -13.2 34 14.0 -4.5 250 26 308.9 309.3 287.3 315.7 2.10 36 646 3819 -0.3 -15.3 31 15.0 -5.7 248 26 309.2 309.5 287.1 315.0 1.80 37 630 4019 -1.7 -18.7 26 17.0 -7.2 244 25 309.8 310.1 286.9 314.4 1.39 38 620 4146 -2.5 -16.5 33 14.0 -7.3 242 24 310.3 310.6 287.3 315.8 1.70 39 615 4210 -2.9 -17.9 30 15.0 -7.8 241 24 310.6 310.8 287.3 315.6 1.52 40 613 4236 -2.9 -18.9 28 16.0 -8.1 241 24 310.9 311.1 287.2 315.5 1.40 41 608 4301 -2.9 -22.9 20 20.0 -8.7 240 24 311.6 311.8 287.1 314.9 1.00 42 583 4632 -4.9 -27.9 15 23.0 -10.7 246 27 313.0 313.1 287.2 315.3 0.66 43 524 5461 -11.3 -34.3 13 23.0 -15.8 269 29 315.0 315.1 287.6 316.4 0.40 44 509 5684 -12.3 -38.3 9 26.0 -16.9 264 34 316.4 316.5 287.9 317.4 0.28 45 506 5729 -12.3 -40.3 8 28.0 -17.0 263 35 317.0 317.0 288.0 317.8 0.23 46 500 5820 -12.3 -43.3 6 31.0 -17.1 260 37 318.0 318.1 288.3 318.7 0.17 47 495 5897 -12.1 -44.1 5 32.0 -17.1 260 38 319.2 319.2 288.6 319.8 0.15 48 488 6005 -12.5 -45.5 4 33.0 -17.4 260 39 320.0 320.0 288.9 320.5 0.13 49 479 6147 -13.1 -39.1 9 26.0 -17.6 260 40 321.0 321.0 289.3 322.0 0.27 50 476 6195 -13.1 -34.1 15 21.0 -17.3 260 41 321.6 321.6 289.7 323.2 0.45 51 470 6291 -13.9 -27.9 30 14.0 -17.2 260 42 321.7 321.9 290.2 324.6 0.82 52 466 6356 -14.7 -22.7 51 8.0 -16.9 260 42 321.5 321.8 290.6 326.1 1.32 53 450 6619 -17.1 -21.5 69 4.4 -18.3 261 43 321.7 322.0 290.9 327.0 1.52 54 432 6924 -19.5 -24.3 66 4.8 -20.7 262 43 322.5 322.7 290.8 326.8 1.24 55 400 7490 -23.9 -29.9 58 6.0 -25.1 265 42 323.9 324.1 290.8 326.8 0.80 56 300 9520 -39.9 -48.9 38 9.0 -40.5 265 54 329.1 329.2 291.6 329.7 0.15 57 268 10281 -46.0 -59.3 21 13.3 -46.4 270 61 331.1 331.1 292.0 331.3 0.05 58 250 10740 -49.7 -65.7 14 16.0 -50.1 275 53 332.2 332.2 292.3 332.3 0.02 59 200 12160 -61.3 -64.6 65 3.3 -61.3 275 46 335.7 335.7 293.3 335.8 0.03 60 151 13861 -71.3 -77.3 40 6.0 -71.3 265 51 346.6 346.6 295.9 346.6 0.01 61 150 13900 -71.1 -77.1 41 6.0 -71.1 270 52 347.6 347.6 296.1 347.6 0.01 62 100 16340 -60.3 -87.3 2 27.0 -60.6 265 47 411.2 411.2 306.7 411.2 0.00 63 97 16530 -59.9 -86.9 2 27.0 -60.2 266 48 415.6 415.6 307.2 415.6 0.00 64 93 16791 -62.5 -87.5 2 25.0 -62.7 270 47 415.5 415.5 307.2 415.5 0.00 65 88 17132 -62.1 -87.1 2 25.0 -62.4 279 45 422.9 422.9 308.0 422.9 0.00 66 76 18024 -68.5 -88.5 4 20.0 -68.7 335 11 427.7 427.7 308.6 427.7 0.00 67 70 18520 -66.1 -89.1 3 23.0 -66.3 295 20 443.0 443.0 310.2 443.0 0.00 68 68 18696 -66.5 -89.5 3 23.0 -66.7 295 22 445.8 445.8 310.4 445.8 0.00 69 64 19065 -66.3 -89.3 3 23.0 -66.5 288 13 454.0 454.0 311.3 454.0 0.00 70 58 19672 -59.9 -87.9 1 28.0 -60.4 270 18 481.4 481.4 313.5 481.5 0.00 71 50 20600 -60.9 -87.9 2 27.0 -61.4 280 13 500.0 500.0 314.9 500.0 0.00 72 49 20726 -59.7 -87.7 1 28.0 -60.3 245 10 505.7 505.7 315.4 505.7 0.00 73 42 21686 -60.7 -87.7 2 27.0 -61.3 321 12 526.0 526.0 316.7 526.0 0.00 74 41 21836 -59.1 -87.1 1 28.0 -59.9 8 13 533.7 533.7 317.2 533.7 0.00 75 36 22648 -59.9 -87.9 1 28.0 -60.7 357 13 551.8 551.8 318.2 551.8 0.00 76 35 22825 -58.3 -87.3 1 29.0 -59.3 8 10 560.4 560.4 318.6 560.5 0.01 77 34 23007 -58.9 -86.9 2 28.0 -59.8 15 10 563.5 563.5 318.8 563.6 0.01 78 32 23390 -55.5 -86.5 1 31.0 -56.9 16 10 582.5 582.5 319.8 582.5 0.01 79 30 23800 -56.3 -86.3 1 30.0 -57.7 50 18 591.2 591.2 320.2 591.2 0.01 80 25 24962 -54.5 -85.5 1 31.0 -56.5 93 10 628.0 628.0 321.8 628.0 0.01 81 24 25223 -54.7 -85.7 1 31.0 -56.6 107 5 634.8 634.8 322.1 634.8 0.01 82 23 25496 -52.5 -84.5 1 32.0 -55.0 112 6 649.0 649.0 322.6 649.1 0.01 83 20 26400 -52.1 -84.1 1 32.0 -55.0 130 5 676.7 676.7 323.7 676.8 0.02 84 18 27081 -53.3 -85.3 1 32.0 -56.1 120 6 693.6 693.6 324.2 693.7 0.02 85 14 28719 -48.1 -83.1 1 35.0 -53.2 336 5 762.9 762.9 326.3 763.2 0.03 86 12 29736 -47.7 -82.7 1 35.0 -53.5 91 12 798.7 798.8 327.2 799.1 0.04 87 11 30312 -47.1 -83.1 1 36.0 -53.5 158 8 821.0 821.1 327.7 821.4 0.04 88 11 30312 -44.7 -81.7 1 37.0 -52.1 158 8 829.8 829.8 328.0 830.2 0.05 89 10 30950 -44.5 -81.5 1 37.0 -52.4 225 6 853.4 853.5 328.5 853.9 0.05 90 8.2 32281 -43.7 -81.7 1 38.0 -52.9 244 9 906.4 906.5 329.5 907.1 0.06 91 7.0 33360 -36.7 -78.7 0 42.0 -50.7 260 12 977.3 977.4 330.8 978.7 0.12 92 6.5 33872 -38.3 -79.3 1 41.0 -51.7 991.5 991.6 331.1 992.8 0.11 93 6.2 34197 -37.1 -79.1 0 42.0 -51.5 1010.1 1010.2 331.4 1011.6 0.12 TRP 151 13861 -71.3 -77.3 40 6.0 -71.3 265 51 346.6 346.6 295.9 346.6 0.01 WND 268 10281 -46.0 -59.3 21 13.3 -46.4 270 61 331.1 331.1 292.0 331.3 0.05 Sounding variables and indices 1000-500 mb thick: 5616.00 m Freezing level: 649.00 mb = 3781.82 m = 12407.40 ft Wetbulb zero: 735.15 mb = 2766.70 m = 9076.99 ft Precipitable water: 0.97 inches Sfc-500 mean rel hum: 47.03 % Est. max temperature: 24.45 C = 76.01 F Sfc-Lift cond lev (LCL): 885.36 mb = 1223.62 m = 4014.45 ft T: 11.42 C 700-500 lapse rate: 6.68 C/km ThetaE index: 5.92 C Layer 850.0- 785.0 mb Conv cond level (CCL): 631.25 mb = 4002.99 m = 13133.02 ft Mean mixing ratio: 5.41 g/kg Conv temperature: 37.83 C = 100.10 F Cap Strength: 13.40 C Lifted Index: 14.11 C Risk: None Lifted Index @300 mb: 18.15 C Lifted Index @700 mb: 12.76 C Showalter Index: -0.31 C Risk: Thunderstorms probable Total Totals Index: 48.20 C Risk: Scattered moderate thunderstorms Vertical Totals Index: 24.10 C Cross Totals Index: 24.10 C K Index: 16.90 Risk: < 20 % chance of thunderstorms Sweat Index: 357.36 Risk: Showers and thunderstorms possible Energy Index: -1.93 Risk: Scattered severe thunderstorms Parcel Indices Parcel: using 100 mb layer CAPE (B+): 25.49 J/kg Max Up Vert Vel: 7.14 m/s Conv Inhibition (B-): 54237.64 J/kg Cap Strength: 13.40 C Lift Cond Lev (LCL): 855.77 mb = 1508.29 m = 4948.40 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 262 at 20 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 98 160 5 -1.7 4.7 | 95 22 -21.6 1.9 1 1000 204 160 9 -3.1 8.5 | 104 24 -22.9 5.7 2 988 305 155 9 -3.8 8.2 | 103 24 -23.7 5.4 3 953 610 155 29 -12.3 26.3 | 126 40 -32.1 23.5 4 925 857 165 30 -7.8 29.0 | 134 38 -27.6 26.2 5 919 914 165 29 -7.5 28.0 | 133 37 -27.4 25.3 6 886 1219 190 27 4.7 26.6 | 148 28 -15.2 23.8 7 854 1524 205 28 11.8 25.4 | 160 24 -8.0 22.6 8 850 1565 210 29 14.5 25.1 | 167 23 -5.4 22.4 9 823 1829 205 30 12.7 27.2 | 164 25 -7.2 24.4 10 793 2134 215 25 14.3 20.5 | 163 19 -5.5 17.7 11 765 2438 230 27 20.7 17.4 | 183 15 0.8 14.6 12 737 2743 240 21 18.2 10.5 | 168 8 -1.7 7.8 13 700 3170 250 27 25.4 9.2 | 220 9 5.5 6.5 14 684 3353 255 25 24.1 6.5 | 229 6 4.3 3.7 15 658 3658 250 26 24.4 8.9 | 217 8 4.6 6.1 16 609 4267 240 24 20.8 12.0 | 186 9 0.9 9.3 17 564 4877 250 30 28.2 10.3 | 228 11 8.3 7.5 18 522 5486 270 29 29.0 -0.0 | 287 10 9.1 -2.7 19 500 5820 260 37 36.4 6.4 | 257 17 16.6 3.7 20 482 6096 260 40 39.4 6.9 | 258 20 19.5 4.2 21 463 6401 260 43 42.3 7.5 | 258 23 22.5 4.7 22 400 7490 265 42 41.8 3.7 | 268 22 22.0 0.9 23 393 7620 265 42 41.8 3.7 | 268 22 22.0 0.9 24 316 9144 270 52 52.0 -0.0 | 275 32 32.1 -2.7 25 300 9520 265 54 53.8 4.7 | 267 34 33.9 2.0 26 268 10281 270 61 61.0 -0.0 | 274 41 41.1 -2.7 27 265 10363 270 61 61.0 -0.0 | 274 41 41.1 -2.7 28 250 10740 275 53 52.8 -4.6 | 283 34 32.9 -7.4 29 200 12160 275 46 45.8 -4.0 | 285 27 26.0 -6.8 30 180 12802 265 44 43.8 3.8 | 267 24 24.0 1.1 31 163 13411 280 51 50.2 -8.9 | 291 33 30.4 -11.6 32 151 13861 265 51 50.8 4.4 | 267 31 30.9 1.7 33 150 13900 270 52 52.0 -0.0 | 275 32 32.1 -2.7 34 147 14021 265 50 49.8 4.4 | 267 30 29.9 1.6 35 140 14326 290 55 51.7 -18.8 | 304 38 31.8 -21.6 36 120 15240 295 28 25.4 -11.8 | 339 16 5.5 -14.6 37 114 15545 280 21 20.7 -3.6 | 353 6 0.8 -6.4 38 108 15850 245 31 28.1 13.1 | 219 13 8.2 10.4 39 100 16340 265 47 46.8 4.1 | 267 27 27.0 1.3 40 98 16459 265 48 47.8 4.2 | 267 28 28.0 1.4 41 89 17069 275 47 46.8 -4.1 | 284 28 27.0 -6.8 42 76 17983 345 11 2.8 -10.6 | 52 22 -17.0 -13.4 43 73 18288 260 9 8.9 1.6 | 84 11 -11.0 -1.2 44 70 18520 295 20 18.1 -8.5 | 9 11 -1.7 -11.2 45 69 18593 300 24 20.8 -12.0 | 356 15 0.9 -14.7 46 66 18898 285 17 16.4 -4.4 | 26 8 -3.4 -7.1 47 63 19202 290 10 9.4 -3.4 | 59 12 -10.5 -6.2 48 60 19507 250 15 14.1 5.1 | 112 6 -5.8 2.4 49 57 19812 285 20 19.3 -5.2 | 4 8 -0.5 -7.9 50 54 20117 310 10 7.7 -6.4 | 53 15 -12.2 -9.2 51 51 20422 280 2 2.0 -0.3 | 80 18 -17.9 -3.1 52 50 20600 280 13 12.8 -2.3 | 55 9 -7.1 -5.0 53 49 20726 245 10 9.1 4.2 | 98 11 -10.8 1.5 54 47 21031 300 15 13.0 -7.5 | 34 12 -6.9 -10.2 55 44 21336 335 10 4.2 -9.1 | 53 20 -15.6 -11.8 56 42 21641 305 12 9.8 -6.9 | 46 14 -10.0 -9.6 57 40 21946 40 14 -9.0 -10.7 | 65 32 -28.9 -13.5 58 38 22250 15 2 -0.5 -1.9 | 77 21 -20.4 -4.7 59 37 22555 350 14 2.4 -13.8 | 47 24 -17.4 -16.5 60 35 22860 10 10 -1.7 -9.8 | 60 25 -21.6 -12.6 61 33 23165 20 10 -3.4 -9.4 | 62 26 -23.3 -12.1 62 32 23470 15 10 -2.6 -9.7 | 61 26 -22.4 -12.4 63 30 23774 35 20 -11.5 -16.4 | 59 37 -31.3 -19.1 64 30 23800 50 18 -13.8 -11.6 | 67 37 -33.6 -14.3 65 27 24384 55 15 -12.3 -8.6 | 71 34 -32.1 -11.4 66 26 24689 65 11 -10.0 -4.6 | 76 31 -29.8 -7.4 67 25 24994 95 10 -10.0 0.9 | 86 30 -29.8 -1.9 68 24 25298 110 4 -3.8 1.4 | 87 24 -23.6 -1.4 69 22 25908 115 11 -10.0 4.6 | 94 30 -29.8 1.9 70 20 26400 130 5 -3.8 3.2 | 91 24 -23.7 0.5 71 17 27432 115 7 -6.3 3.0 | 90 26 -26.2 0.2 72 16 28042 60 14 -12.1 -7.0 | 73 33 -32.0 -9.7 73 15 28346 80 10 -9.8 -1.7 | 81 30 -29.7 -4.5 74 14 28956 280 3 3.0 -0.5 | 79 17 -16.9 -3.3 75 13 29261 30 10 -5.0 -8.7 | 65 27 -24.9 -11.4 76 12 29566 60 16 -13.9 -8.0 | 72 35 -33.7 -10.7 77 12 29870 110 10 -9.4 3.4 | 91 29 -29.3 0.7 78 10 30950 225 6 4.2 4.2 | 95 16 -15.6 1.5 79 7 33360 260 12 11.8 2.1 | 85 8 -8.0 -0.7 Wind Parameters Mean winds (0-6000m): 232.1 at 26.7 knts Storm direction: 262.1 at 20.1 knts Shear (0-3000m) pos: 6.8 neg: 4.0 tot: 10.8 10-3/s Storm rel Dir Shear (0-3000m): 116.9 deg Storm rel helicity (0-3000m) pos: 330.8 neg: -14.3 tot: 316.4 m^2/s^2 ave: 105.5 10^-3 m/s^2 rel: 0.56 Storm rel vorticity (0-3000m) horiz: 13.6 stream: 7.6 10^-3/s Energy-Hel index: 0.05 Bulk Rich Number: 0.26 Bulk Shear: 97.06 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 ------------------------------------------------------------------------------- 500 156 14 112 28| 0.0 23.9 23.9|116.8 -1.5 115.3 230.7 0.63| 24.5 15.5 1000 162 21 124 32| 6.3 12.0 18.2|215.4 -1.5 213.9 213.9 0.68| 19.0 13.0 1500 175 24 133 30| 9.0 8.0 17.0|295.8 -1.5 294.3 196.2 0.71| 17.7 12.6 2000 185 25 141 28| 6.8 6.0 12.8|295.8 -9.2 286.5 143.3 0.60| 15.3 9.1 2500 193 25 147 26| 6.9 4.8 11.7|319.7 -11.5 308.2 123.3 0.57| 14.5 8.3 3000 201 25 152 23| 6.8 4.0 10.8|330.8 -14.3 316.4 105.5 0.56| 13.6 7.6 4000 215 25 162 19| 5.2 3.5 8.6|334.8 -23.6 311.3 77.8 0.48| 11.3 5.4 5000 223 25 171 16| 5.0 2.8 7.8|362.8 -25.5 337.3 67.5 0.51| 10.3 5.3 6000 232 27 185 14| 4.6 2.5 7.1|378.8 -46.8 332.0 55.3 0.43| 10.2 4.4 Wrote GIF file: /home/apache/climate/data/raob//KIAD/skewt/KIAD.skewt.20250421.12.gif