UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025120412.upa.cvt Date: 1200Z 4 DEC 25 Searching for KIAD... Searching the city database file for: KIAD ... Date:1200Z 4 DEC 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 1008 98 -2.1 -4.0 87 1.9 -2.8 330 2 270.4 270.9 269.9 278.0 2.82 1 1002 136 0.2 -4.7 70 4.9 -1.6 319 5 273.2 273.6 271.5 280.6 2.69 2 1000 149 0.6 -4.4 69 5.0 -1.2 315 6 273.8 274.2 271.9 281.3 2.75 3 995 189 1.0 -3.6 71 4.6 -0.7 307 8 274.5 275.0 272.6 282.6 2.94 4 991 222 1.4 -4.6 64 6.0 -0.9 301 9 275.3 275.7 272.8 282.8 2.74 5 986 263 3.8 -7.2 44 11.0 -0.2 293 11 278.1 278.5 273.7 284.4 2.25 6 983 287 4.4 -8.6 38 13.0 -0.2 288 12 278.9 279.3 273.8 284.7 2.03 7 970 396 3.8 -11.2 32 15.0 -1.2 284 14 279.4 279.7 273.6 284.2 1.67 8 926 770 0.6 -12.4 37 13.0 -3.5 285 24 279.8 280.1 273.7 284.4 1.59 9 925 779 0.6 -13.4 34 14.0 -3.7 285 24 279.9 280.2 273.6 284.2 1.47 10 920 822 0.6 -13.4 34 14.0 -3.7 287 26 280.4 280.6 273.8 284.7 1.48 11 915 866 0.6 -14.4 31 15.0 -3.9 288 29 280.8 281.0 273.9 284.8 1.37 12 913 884 0.4 -14.6 31 15.0 -4.1 289 29 280.8 281.0 273.9 284.7 1.35 13 911 901 0.4 -14.6 31 15.0 -4.1 290 30 280.9 281.2 273.9 284.9 1.35 14 901 990 2.0 -15.0 27 17.0 -3.2 290 31 283.5 283.7 275.3 287.4 1.32 15 884 1143 1.6 -15.4 27 17.0 -3.6 290 29 284.6 284.8 275.9 288.5 1.30 16 865 1318 2.0 -27.0 10 29.0 -4.8 282 30 286.8 286.9 275.8 288.3 0.48 17 855 1412 1.6 -12.4 34 14.0 -3.1 274 31 287.3 287.6 277.9 292.5 1.72 18 851 1450 1.8 -23.2 14 25.0 -4.7 271 31 287.9 288.1 276.7 290.1 0.69 19 850 1459 1.8 -24.2 12 26.0 -4.8 270 31 288.0 288.1 276.7 290.0 0.63 20 848 1478 1.6 -23.4 14 25.0 -4.8 269 31 288.0 288.1 276.7 290.2 0.68 21 844 1516 1.6 -15.4 27 17.0 -3.7 266 32 288.4 288.6 277.9 292.5 1.36 22 839 1564 1.2 -17.8 23 19.0 -4.4 266 32 288.5 288.7 277.6 291.9 1.12 23 830 1650 0.2 -7.8 55 8.0 -2.8 267 32 288.3 288.8 279.4 295.8 2.56 24 796 1984 -2.5 -5.3 81 2.8 -3.6 275 35 288.9 289.5 280.6 298.3 3.23 25 792 2024 -2.3 -5.6 78 3.3 -3.6 276 36 289.5 290.1 280.8 298.8 3.18 26 790 2044 -2.3 -8.3 63 6.0 -4.5 277 37 289.7 290.2 280.1 297.4 2.58 27 788 2064 -2.3 -8.3 63 6.0 -4.5 277 37 289.9 290.4 280.3 297.6 2.59 28 778 2165 -2.9 -10.9 54 8.0 -5.7 280 39 290.4 290.7 279.9 296.7 2.14 29 750 2454 -5.7 -10.7 68 5.0 -7.4 280 37 290.4 290.8 280.0 297.1 2.25 30 747 2486 -6.1 -11.1 68 5.0 -7.8 279 37 290.3 290.7 279.9 296.8 2.19 31 735 2612 -6.7 -13.7 57 7.0 -8.9 277 35 291.0 291.3 279.7 296.4 1.80 32 727 2698 -7.3 -11.6 71 4.3 -8.7 276 34 291.2 291.6 280.3 297.7 2.16 33 725 2719 -7.3 -13.3 62 6.0 -9.2 275 34 291.5 291.8 280.1 297.2 1.89 34 708 2904 -8.3 -9.9 88 1.6 -8.8 265 38 292.3 292.8 281.3 299.9 2.54 35 703 2959 -7.9 -8.0 99 0.1 -7.9 262 40 293.4 293.9 282.3 302.2 2.97 36 700 2992 -7.5 -7.9 97 0.4 -7.7 260 41 294.2 294.7 282.7 303.2 3.01 37 694 3059 -7.1 -7.8 95 0.7 -7.4 255 43 295.3 295.9 283.2 304.5 3.06 38 682 3195 -7.7 -7.8 99 0.1 -7.7 256 46 296.2 296.7 283.6 305.5 3.11 39 662 3427 -8.3 -9.9 88 1.6 -8.9 258 50 298.0 298.5 283.9 306.3 2.72 40 655 3510 -8.7 -9.7 92 1.0 -9.1 259 52 298.5 299.0 284.2 307.0 2.79 41 648 3593 -8.9 -11.4 82 2.5 -9.8 259 54 299.2 299.6 284.1 306.7 2.47 42 639 3702 -8.9 -16.9 52 8.0 -11.3 260 55 300.4 300.7 283.5 305.4 1.59 43 633 3775 -9.5 -12.8 77 3.3 -10.6 261 55 300.5 300.9 284.4 307.5 2.25 44 631 3800 -9.7 -14.7 67 5.0 -11.3 261 55 300.5 300.9 284.0 306.6 1.94 45 627 3849 -9.7 -14.7 67 5.0 -11.3 261 56 301.1 301.4 284.2 307.2 1.95 46 623 3898 -9.7 -14.4 69 4.7 -11.2 262 56 301.6 302.0 284.5 307.9 2.01 47 616 3986 -10.3 -15.3 67 5.0 -11.9 263 56 301.9 302.3 284.5 307.9 1.89 48 609 4074 -10.7 -18.7 52 8.0 -12.9 263 56 302.4 302.7 284.2 307.0 1.43 49 607 4099 -10.7 -16.7 61 6.0 -12.5 263 56 302.7 303.0 284.6 308.1 1.70 50 602 4163 -10.9 -17.9 56 7.0 -12.9 264 57 303.2 303.5 284.6 308.2 1.55 51 598 4214 -11.3 -17.3 61 6.0 -13.0 264 57 303.3 303.6 284.8 308.6 1.64 52 590 4318 -11.9 -13.9 85 2.0 -12.5 265 58 303.8 304.2 285.6 310.8 2.21 53 583 4409 -12.3 -14.9 81 2.6 -13.1 265 60 304.4 304.8 285.7 310.9 2.06 54 500 5570 -19.1 -21.4 82 2.3 -19.7 265 81 309.8 310.0 286.8 314.3 1.38 55 400 7200 -28.7 -43.7 22 15.0 -30.2 260 104 317.7 317.7 288.2 318.4 0.20 56 300 9190 -42.5 -50.5 41 8.0 -42.9 265 143 325.5 325.5 290.6 325.9 0.12 57 250 10400 -52.5 -60.5 37 8.0 -52.7 260 139 328.0 328.0 291.2 328.2 0.04 58 200 11820 -58.5 -75.5 9 17.0 -58.7 265 144 340.1 340.1 294.4 340.2 0.01 59 192 12075 -59.8 -76.5 10 16.6 -60.0 265 148 342.0 342.0 294.8 342.0 0.01 60 178 12543 -62.3 -78.3 10 16.0 -62.4 265 133 345.4 345.4 295.6 345.4 0.00 61 150 13600 -61.1 -84.1 3 23.0 -61.3 265 114 364.8 364.8 299.6 364.8 0.00 62 100 16110 -63.9 -86.9 3 23.0 -64.1 265 103 404.3 404.3 305.7 404.3 0.00 63 93 16558 -60.9 -86.9 2 26.0 -61.2 266 99 418.7 418.7 307.6 418.7 0.00 64 85 17116 -62.7 -87.7 2 25.0 -63.0 270 79 425.9 425.9 308.4 425.9 0.00 65 78 17648 -60.9 -87.9 2 27.0 -61.2 265 85 440.3 440.3 309.9 440.3 0.00 66 77 17729 -57.5 -87.5 1 30.0 -58.0 266 82 449.0 449.0 310.7 449.0 0.00 67 75 17896 -56.7 -86.7 1 30.0 -57.3 270 74 454.0 454.0 311.3 454.0 0.00 68 70 18330 -59.9 -86.9 2 27.0 -60.3 275 48 456.2 456.2 311.4 456.3 0.00 69 61 19180 -65.3 -89.3 2 24.0 -65.5 272 51 462.5 462.5 312.0 462.5 0.00 70 60 19281 -65.1 -89.1 2 24.0 -65.4 271 52 465.2 465.2 312.3 465.2 0.00 71 57 19597 -60.7 -88.7 1 28.0 -61.2 273 49 482.0 482.0 313.6 482.0 0.00 72 50 20410 -62.7 -88.7 2 26.0 -63.1 260 28 495.7 495.7 314.7 495.7 0.00 73 43 21337 -62.9 -88.9 2 26.0 -63.4 280 36 517.1 517.1 316.1 517.1 0.00 74 42 21482 -61.7 -88.7 2 27.0 -62.3 274 34 523.6 523.6 316.5 523.6 0.00 75 40 21783 -62.7 -89.7 1 27.0 -63.2 261 31 528.4 528.4 316.8 528.4 0.00 76 40 21783 -60.5 -89.5 1 29.0 -61.2 261 31 533.9 533.9 317.2 533.9 0.00 77 39 21941 -60.1 -89.1 1 29.0 -60.8 255 29 538.8 538.8 317.5 538.8 0.00 78 38 22102 -61.1 -89.1 1 28.0 -61.7 255 28 540.3 540.3 317.5 540.3 0.00 79 36 22440 -58.1 -88.1 1 30.0 -59.0 284 30 556.5 556.5 318.5 556.5 0.00 80 33 22986 -58.5 -88.5 1 30.0 -59.5 307 24 569.4 569.4 319.1 569.5 0.00 81 30 23580 -61.7 -89.7 1 28.0 -62.4 295 10 576.4 576.4 319.5 576.5 0.00 82 29 23791 -60.3 -89.3 1 29.0 -61.2 285 10 585.9 585.9 319.9 585.9 0.00 83 28 24009 -61.5 -89.5 1 28.0 -62.3 289 7 588.5 588.5 320.0 588.5 0.00 84 27 24236 -59.5 -89.5 1 30.0 -60.6 271 10 600.3 600.3 320.6 600.3 0.00 85 25 24721 -57.1 -88.1 1 31.0 -58.6 278 14 620.5 620.5 321.5 620.5 0.01 86 23 25247 -58.9 -87.9 1 29.0 -60.2 300 11 630.2 630.2 321.9 630.2 0.01 87 21 25821 -57.1 -88.1 1 31.0 -58.8 270 10 652.2 652.2 322.7 652.3 0.01 88 20 26130 -57.7 -87.7 1 30.0 -59.4 290 12 659.6 659.6 323.0 659.6 0.01 89 19 26454 -58.1 -88.1 1 30.0 -59.8 290 12 668.1 668.1 323.3 668.1 0.01 90 18 26797 -54.7 -86.7 1 32.0 -57.2 288 7 689.2 689.2 324.1 689.3 0.01 91 16 27553 -54.1 -86.1 1 32.0 -56.9 295 9 714.8 714.8 324.9 714.9 0.01 92 13 28906 -47.5 -83.5 1 36.0 -53.1 305 10 781.4 781.4 326.8 781.6 0.03 93 12 29434 -48.3 -83.3 1 35.0 -53.9 334 16 796.6 796.6 327.1 796.9 0.03 94 10 30640 -46.7 -83.7 1 37.0 -53.6 265 17 845.2 845.2 328.3 845.6 0.04 95 9.0 31340 -45.7 -82.7 1 37.0 -53.5 874.9 875.0 329.0 875.4 0.05 96 7.5 32544 -49.7 -84.7 1 35.0 -56.3 905.6 905.6 329.5 906.0 0.04 TRP 178 12543 -62.3 -78.3 10 16.0 -62.4 265 133 345.4 345.4 295.6 345.4 0.00 WND 192 12075 -59.8 -76.5 10 16.6 -60.0 265 148 342.0 342.0 294.8 342.0 0.01 Sounding variables and indices 1000-500 mb thick: 5421.00 m Freezing level: Surface below freezing Freezing level: 1002.52 mb = 132.83 m = 435.78 ft Freezing level: 827.48 mb = 1675.16 m = 5495.86 ft Wetbulb zero: Below ground Precipitable water: 0.45 inches Sfc-500 mean rel hum: 64.18 % Est. max temperature: 14.68 C = 58.43 F Sfc-Lift cond lev (LCL): 978.26 mb = 326.60 m = 1071.51 ft T: 4.18 C 700-500 lapse rate: 4.50 C/km ThetaE index: 2.45 C Layer 851.0- 848.0 mb Conv cond level (CCL): 517.99 mb = 5302.74 m = 17397.23 ft Mean mixing ratio: 1.86 g/kg Conv temperature: 36.08 C = 96.95 F Cap Strength: 18.85 C Lifted Index: 21.78 C Risk: None Lifted Index @300 mb: 29.49 C Lifted Index @700 mb: 12.34 C Showalter Index: 17.09 C Risk: None Total Totals Index: 15.80 C Risk: None Vertical Totals Index: 20.90 C Cross Totals Index: -5.10 C K Index: -3.70 Risk: None Sweat Index: 143.00 Risk: None Energy Index: 5.03 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 24.95 J/kg Max Up Vert Vel: 7.06 m/s Conv Inhibition (B-): 64401.11 J/kg Cap Strength: 21.62 C Lift Cond Lev (LCL): 794.15 mb = 2002.37 m = 6569.38 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 297 at 36 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 1008 98 330 2 1.0 -1.7 | 115 35 -31.4 14.8 1 1000 149 315 6 4.2 -4.2 | 114 31 -28.2 12.3 2 981 305 285 13 12.6 -3.4 | 124 24 -19.8 13.2 3 945 610 280 18 17.7 -3.1 | 132 20 -14.7 13.4 4 925 779 285 24 23.2 -6.2 | 138 14 -9.2 10.3 5 910 914 290 31 29.1 -10.6 | 151 7 -3.3 5.9 6 876 1219 290 29 27.3 -9.9 | 142 8 -5.1 6.6 7 850 1459 270 31 31.0 -0.0 | 175 17 -1.4 16.5 8 843 1524 265 32 31.9 2.8 | 178 19 -0.5 19.3 9 811 1829 270 32 32.0 -0.0 | 179 17 -0.4 16.5 10 780 2134 280 39 38.4 -6.8 | 212 11 6.0 9.8 11 751 2438 280 37 36.4 -6.4 | 202 11 4.0 10.1 12 722 2743 275 34 33.9 -3.0 | 186 14 1.5 13.6 13 700 2992 260 41 40.4 7.1 | 199 25 8.0 23.7 14 695 3048 255 43 41.5 11.1 | 198 29 9.1 27.7 15 642 3658 260 55 54.2 9.6 | 220 34 21.8 26.1 16 593 4267 265 57 56.8 5.0 | 229 33 24.4 21.5 17 547 4877 265 72 71.7 6.3 | 240 45 39.3 22.8 18 500 5570 265 81 80.7 7.1 | 244 54 48.3 23.6 19 465 6096 260 90 88.6 15.6 | 240 65 56.2 32.2 20 400 7200 260 104 102.4 18.1 | 244 78 70.0 34.6 21 393 7315 255 102 98.5 26.4 | 237 79 66.1 42.9 22 376 7620 260 107 105.4 18.6 | 244 81 73.0 35.1 23 302 9144 270 141 141.0 -0.0 | 261 110 108.6 16.5 24 300 9190 265 143 142.5 12.5 | 255 114 110.1 29.0 25 289 9449 265 144 143.5 12.6 | 255 115 111.1 29.1 26 250 10400 260 139 136.9 24.1 | 249 112 104.5 40.7 27 228 10973 260 136 133.9 23.6 | 248 109 101.5 40.2 28 200 11820 265 144 143.5 12.6 | 255 115 111.1 29.1 29 192 12075 265 148 147.4 12.9 | 256 119 115.0 29.4 30 188 12192 265 148 147.4 12.9 | 256 119 115.0 29.4 31 178 12543 265 133 132.5 11.6 | 254 104 100.1 28.1 32 150 13600 265 114 113.6 9.9 | 252 85 81.2 26.5 33 147 13716 270 127 127.0 -0.0 | 260 96 94.6 16.5 34 133 14326 255 109 105.3 28.2 | 238 86 72.9 44.8 35 121 14935 260 91 89.6 15.8 | 241 66 57.2 32.3 36 115 15240 260 97 95.5 16.8 | 242 71 63.1 33.4 37 100 16110 265 103 102.6 9.0 | 250 75 70.2 25.5 38 99 16154 265 115 114.6 10.0 | 252 86 82.2 26.6 39 95 16459 265 103 102.6 9.0 | 250 75 70.2 25.5 40 86 17069 270 78 78.0 -0.0 | 250 49 45.6 16.5 41 78 17678 265 85 84.7 7.4 | 245 58 52.3 24.0 42 70 18288 280 56 55.1 -9.7 | 253 24 22.8 6.8 43 70 18330 275 48 47.8 -4.2 | 231 20 15.4 12.4 44 67 18593 275 48 47.8 -4.2 | 231 20 15.4 12.4 45 58 19507 270 53 53.0 -0.0 | 231 26 20.6 16.5 46 55 19812 280 39 38.4 -6.8 | 212 11 6.0 9.8 47 52 20117 255 38 36.7 9.8 | 189 27 4.3 26.4 48 50 20410 260 28 27.6 4.9 | 167 22 -4.8 21.4 49 48 20726 260 25 24.6 4.3 | 160 22 -7.8 20.9 50 45 21031 275 40 39.8 -3.5 | 210 15 7.4 13.1 51 43 21336 280 36 35.5 -6.3 | 197 11 3.1 10.3 52 39 21946 255 29 28.0 7.5 | 170 24 -4.4 24.1 53 37 22250 255 28 27.0 7.2 | 167 24 -5.4 23.8 54 35 22555 300 31 26.8 -15.5 | 101 6 -5.6 1.0 55 32 23165 310 21 16.1 -13.5 | 101 17 -16.3 3.0 56 30 23580 295 10 9.1 -4.2 | 118 26 -23.3 12.3 57 29 23774 285 10 9.7 -2.6 | 122 27 -22.7 14.0 58 28 24079 290 6 5.6 -2.1 | 118 30 -26.8 14.5 59 26 24384 255 13 12.6 3.4 | 135 28 -19.8 19.9 60 25 24689 275 13 13.0 -1.1 | 128 25 -19.4 15.4 61 24 24994 300 18 15.6 -9.0 | 114 18 -16.8 7.5 62 23 25298 300 10 8.7 -5.0 | 116 26 -23.7 11.5 63 22 25603 310 11 8.4 -7.1 | 112 26 -24.0 9.5 64 21 25908 255 10 9.7 2.6 | 130 30 -22.7 19.1 65 20 26130 290 12 11.3 -4.1 | 120 25 -21.1 12.4 66 19 26518 290 12 11.3 -4.1 | 120 25 -21.1 12.4 67 17 27127 285 2 1.9 -0.5 | 118 34 -30.5 16.0 68 16 27432 300 4 3.5 -2.0 | 117 32 -28.9 14.5 69 16 27737 290 15 14.1 -5.1 | 122 22 -18.3 11.4 70 15 28042 265 15 14.9 1.3 | 136 25 -17.5 17.9 71 14 28346 225 14 9.9 9.9 | 140 35 -22.5 26.4 72 14 28651 300 10 8.7 -5.0 | 116 26 -23.7 11.5 73 13 28956 305 10 8.2 -5.7 | 114 27 -24.2 10.8 74 12 29261 345 16 4.1 -15.5 | 92 28 -28.3 1.1 75 10 30640 265 17 16.9 1.5 | 139 24 -15.5 18.0 Wind Parameters Mean winds (0-6000m): 267.1 at 48.5 knts Storm direction: 297.1 at 36.4 knts Shear (0-3000m) pos: 3.8 neg: 6.4 tot: 10.2 10-3/s Storm rel Dir Shear (0-3000m): 85.0 deg Storm rel helicity (0-3000m) pos: 130.7 neg: -18.2 tot: 112.5 m^2/s^2 ave: 37.5 10^-3 m/s^2 rel: 0.31 Storm rel vorticity (0-3000m) horiz: 13.4 stream: 4.2 10^-3/s Energy-Hel index: 0.02 Bulk Rich Number: 0.14 Bulk Shear: 183.45 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 ------------------------------------------------------------------------------- 500 286 12 122 25| 0.0 17.1 17.1| 46.0 -3.0 42.9 85.9 0.39| 18.0 7.1 1000 287 19 128 18| 6.5 8.5 15.0| 59.5 -3.9 55.6 55.6 0.33| 16.2 5.3 1500 283 23 138 15| 4.3 7.9 12.3| 82.5 -4.7 77.8 51.9 0.38| 15.5 5.9 2000 279 26 150 14| 5.7 6.0 11.7|107.8 -4.7 103.1 51.6 0.43| 14.3 6.2 2500 279 28 158 13| 4.6 4.5 9.0|109.8 -14.7 95.1 38.0 0.35| 12.4 4.4 3000 277 30 167 13| 3.8 6.4 10.2|130.7 -18.2 112.5 37.5 0.31| 13.4 4.2 4000 270 35 190 17| 4.6 4.8 9.4|252.6 -18.2 234.4 58.6 0.41| 12.0 5.0 5000 269 41 207 20| 4.5 4.7 9.1|356.4 -18.2 338.2 67.6 0.43| 11.6 5.0 6000 267 49 220 25| 3.7 5.3 9.1|385.3 -76.2 309.0 51.5 0.36| 11.2 4.1 Wrote GIF file: /home/apache/climate/data/raob//KIAD/skewt/KIAD.skewt.20251204.12.gif