UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025120700.upa.cvt Date: 0000Z 7 DEC 25 Searching for KIAD... Searching the city database file for: KIAD ... Date:0000Z 7 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 1005 98 2.0 0.4 89 1.6 1.3 145 4 274.8 275.4 274.2 285.4 3.91 1 1000 126 2.2 0.7 90 1.5 1.5 200 4 275.4 276.0 274.7 286.3 4.02 2 996 158 2.0 0.6 90 1.4 1.4 213 5 275.5 276.1 274.8 286.4 4.01 3 992 191 2.2 0.4 88 1.8 1.4 225 5 276.0 276.6 275.0 286.8 3.96 4 991 199 2.4 0.2 85 2.2 1.5 229 5 276.3 276.9 275.0 287.0 3.91 5 988 223 3.6 -0.7 73 4.3 1.8 238 6 277.7 278.3 275.5 287.8 3.67 6 974 339 3.0 -1.0 75 4.0 1.3 273 8 278.2 278.9 275.8 288.3 3.64 7 966 406 4.2 -4.8 52 9.0 0.7 280 11 280.1 280.6 275.6 287.9 2.77 8 925 757 1.6 -5.4 60 7.0 -1.1 300 22 280.9 281.4 276.0 288.8 2.76 9 898 995 0.0 -6.0 64 6.0 -2.3 305 28 281.7 282.2 276.3 289.4 2.72 10 850 1432 -4.1 -6.4 84 2.3 -4.9 310 33 281.9 282.3 276.5 289.8 2.78 11 830 1619 -5.9 -6.7 94 0.8 -6.2 305 28 281.9 282.4 276.6 289.8 2.78 12 828 1638 -6.1 -7.1 93 1.0 -6.5 304 27 281.9 282.3 276.5 289.6 2.71 13 825 1666 -5.1 -7.8 81 2.7 -6.0 303 26 283.2 283.7 276.9 290.6 2.57 14 819 1724 -4.9 -8.5 76 3.6 -6.1 300 23 284.0 284.4 277.2 291.1 2.45 15 817 1743 -5.3 -8.4 79 3.1 -6.4 299 22 283.8 284.2 277.1 290.9 2.48 16 812 1791 -5.5 -9.0 76 3.5 -6.7 297 20 284.1 284.5 277.2 291.0 2.38 17 811 1801 -5.3 -10.3 68 5.0 -7.0 296 19 284.4 284.8 277.0 290.6 2.15 18 809 1820 -3.5 -13.5 46 10.0 -6.6 295 18 286.5 286.8 277.4 291.4 1.67 19 794 1968 -4.1 -11.1 58 7.0 -6.4 288 19 287.4 287.8 278.4 293.5 2.06 20 792 1988 -3.9 -8.9 68 5.0 -5.7 287 20 287.8 288.3 279.1 295.0 2.46 21 780 2108 -4.5 -10.5 63 6.0 -6.5 281 21 288.4 288.8 279.0 294.9 2.20 22 743 2489 -6.7 -10.8 73 4.1 -8.1 268 25 290.1 290.5 279.9 296.8 2.26 23 741 2510 -6.7 -11.2 70 4.5 -8.2 268 25 290.3 290.7 279.9 296.8 2.19 24 735 2574 -6.5 -17.5 41 11.0 -9.6 266 25 291.2 291.4 279.2 295.2 1.31 25 734 2585 -6.7 -16.7 45 10.0 -9.5 265 25 291.1 291.3 279.3 295.4 1.41 26 719 2745 -7.9 -15.9 53 8.0 -10.2 260 26 291.5 291.8 279.6 296.2 1.54 27 709 2854 -8.7 -18.7 44 10.0 -11.3 263 27 291.8 292.0 279.4 295.6 1.23 28 700 2953 -9.3 -17.3 52 8.0 -11.5 265 28 292.2 292.4 279.8 296.5 1.40 29 693 3031 -9.9 -16.9 57 7.0 -11.8 261 28 292.4 292.6 279.9 296.9 1.47 30 674 3244 -11.7 -18.7 56 7.0 -13.5 260 30 292.7 292.9 279.8 296.7 1.30 31 671 3278 -11.9 -21.9 43 10.0 -14.2 260 30 292.8 293.0 279.5 295.9 0.99 32 658 3428 -13.3 -16.8 75 3.5 -14.2 260 31 292.9 293.2 280.3 297.7 1.56 33 656 3451 -13.5 -18.3 67 4.8 -14.7 260 31 292.9 293.2 280.1 297.2 1.38 34 643 3603 -14.9 -17.2 83 2.3 -15.5 260 32 293.0 293.3 280.3 297.7 1.54 35 640 3638 -15.1 -17.8 80 2.7 -15.8 260 33 293.2 293.4 280.3 297.7 1.47 36 636 3685 -15.1 -19.7 68 4.6 -16.2 260 33 293.7 293.9 280.3 297.6 1.26 37 622 3853 -15.9 -17.9 85 2.0 -16.4 269 39 294.7 294.9 281.0 299.3 1.50 38 617 3914 -16.3 -19.0 80 2.7 -17.0 272 41 294.9 295.1 281.0 299.2 1.38 39 577 4415 -20.3 -20.5 98 0.2 -20.4 275 41 295.9 296.1 281.3 300.0 1.30 40 573 4466 -20.5 -21.5 92 1.0 -20.7 275 42 296.3 296.5 281.3 300.0 1.20 41 564 4583 -21.5 -21.9 97 0.4 -21.6 275 42 296.4 296.6 281.4 300.1 1.17 42 561 4622 -21.7 -22.9 90 1.2 -22.0 275 42 296.7 296.8 281.4 300.1 1.08 43 559 4649 -21.7 -25.4 72 3.7 -22.4 275 42 297.0 297.1 281.2 299.7 0.87 44 556 4688 -21.9 -26.8 64 4.9 -22.8 275 42 297.2 297.3 281.2 299.6 0.77 45 550 4768 -22.7 -27.7 64 5.0 -23.5 275 43 297.2 297.3 281.1 299.5 0.71 46 547 4808 -22.9 -29.9 53 7.0 -24.0 275 43 297.4 297.5 281.0 299.3 0.58 47 544 4848 -23.3 -28.2 64 4.9 -24.1 275 43 297.4 297.5 281.1 299.6 0.69 48 539 4916 -23.7 -27.8 69 4.1 -24.4 275 44 297.7 297.8 281.3 300.0 0.72 49 534 4984 -24.3 -29.3 63 5.0 -25.1 274 45 297.8 297.9 281.3 299.8 0.63 50 516 5233 -26.1 -27.1 91 1.0 -26.3 272 51 298.5 298.7 281.8 301.1 0.80 51 514 5261 -26.3 -28.5 82 2.2 -26.6 272 51 298.6 298.7 281.7 300.9 0.71 52 512 5289 -26.7 -27.9 90 1.2 -26.9 272 52 298.5 298.6 281.7 300.9 0.75 53 510 5317 -26.7 -28.9 82 2.2 -27.1 271 53 298.8 298.9 281.8 301.0 0.69 54 500 5460 -28.1 -29.0 92 0.9 -28.2 270 56 298.8 298.9 281.8 301.0 0.70 55 400 7050 -33.9 -54.9 10 21.0 -35.0 270 74 310.9 310.9 285.7 311.1 0.06 56 369 7613 -37.5 -58.5 9 21.0 -38.4 260 92 313.4 313.4 286.6 313.5 0.04 57 300 9040 -39.9 -57.9 13 18.0 -40.7 255 134 329.1 329.1 291.5 329.3 0.05 58 283 9439 -41.1 -61.6 9 20.6 -41.9 255 153 333.0 333.0 292.6 333.2 0.03 59 250 10280 -43.5 -69.5 4 26.0 -44.3 255 139 341.4 341.4 294.7 341.4 0.01 60 200 11760 -50.1 -74.1 4 24.0 -50.5 245 129 353.4 353.4 297.4 353.5 0.01 61 150 13630 -54.7 -84.7 1 30.0 -55.1 255 101 375.8 375.8 301.6 375.8 0.00 62 100 16160 -62.3 -87.3 2 25.0 -62.5 255 80 407.4 407.4 306.2 407.4 0.00 63 93 16609 -60.7 -86.7 2 26.0 -61.0 257 71 419.1 419.1 307.6 419.1 0.00 64 84 17237 -64.1 -87.1 3 23.0 -64.3 256 66 424.5 424.5 308.2 424.5 0.00 65 72 18178 -64.7 -88.7 2 24.0 -64.9 267 50 442.4 442.4 310.1 442.4 0.00 66 72 18178 -64.3 -88.3 2 24.0 -64.6 267 50 443.2 443.2 310.2 443.2 0.00 67 70 18350 -65.9 -87.9 3 22.0 -66.1 250 45 443.4 443.4 310.2 443.4 0.00 68 66 18707 -67.5 -89.5 3 22.0 -67.7 250 43 447.4 447.4 310.6 447.5 0.00 69 65 18799 -66.1 -89.1 3 23.0 -66.3 250 43 452.5 452.5 311.1 452.5 0.00 70 61 19185 -66.1 -89.1 3 23.0 -66.3 250 51 460.8 460.8 311.8 460.8 0.00 71 61 19185 -66.3 -90.3 2 24.0 -66.5 250 51 460.3 460.3 311.8 460.3 0.00 72 58 19493 -64.1 -90.1 2 26.0 -64.4 262 42 472.0 472.0 312.8 472.0 0.00 73 50 20400 -65.5 -89.5 2 24.0 -65.8 255 35 489.1 489.1 314.1 489.1 0.00 74 45 21038 -66.9 -90.9 2 24.0 -67.2 252 31 500.7 500.7 315.0 500.7 0.00 75 42 21456 -65.3 -90.3 2 25.0 -65.7 260 29 514.6 514.6 315.9 514.7 0.00 76 40 21755 -62.1 -90.1 1 28.0 -62.7 282 32 529.9 529.9 316.9 529.9 0.00 77 39 21911 -62.5 -90.5 1 28.0 -63.0 294 34 532.7 532.7 317.1 532.8 0.00 78 38 22073 -59.3 -89.3 1 30.0 -60.1 293 32 544.9 544.9 317.8 544.9 0.00 79 37 22240 -58.9 -88.9 1 30.0 -59.7 289 29 550.1 550.1 318.1 550.1 0.00 80 34 22770 -58.9 -87.9 1 29.0 -59.8 276 25 563.5 563.5 318.8 563.6 0.01 81 30 23550 -61.5 -89.5 1 28.0 -62.3 255 8 577.0 577.0 319.5 577.0 0.00 82 27 24206 -60.1 -89.1 1 29.0 -61.1 233 14 598.6 598.6 320.6 598.6 0.01 83 27 24206 -57.5 -88.5 1 31.0 -58.8 233 14 605.9 605.9 320.9 605.9 0.01 84 25 24694 -56.9 -87.9 1 31.0 -58.4 242 16 621.1 621.1 321.5 621.1 0.01 85 23 25221 -57.9 -87.9 1 30.0 -59.3 270 15 633.1 633.1 322.0 633.2 0.01 86 21 25799 -55.3 -87.3 1 32.0 -57.3 314 11 657.7 657.7 323.0 657.7 0.01 87 21 25799 -56.1 -87.1 1 31.0 -58.0 314 11 655.2 655.3 322.9 655.3 0.01 88 20 26110 -55.1 -87.1 1 32.0 -57.3 250 18 667.5 667.5 323.3 667.6 0.01 89 17 27150 -54.7 -86.7 1 32.0 -57.3 250 11 700.6 700.6 324.4 700.7 0.01 90 16 27541 -51.9 -84.9 1 33.0 -55.4 227 7 721.9 722.0 325.1 722.1 0.02 91 15 27958 -53.9 -85.9 1 32.0 -56.9 149 4 728.7 728.8 325.3 728.9 0.02 92 13 28882 -51.7 -85.7 1 34.0 -55.8 295 9 766.8 766.8 326.4 767.0 0.02 93 12 29401 -52.5 -85.5 1 33.0 -56.5 300 11 781.7 781.7 326.8 781.9 0.02 94 12 29401 -49.9 -84.9 1 35.0 -54.8 300 11 790.9 791.0 327.0 791.2 0.02 95 11 29970 -50.3 -84.3 1 34.0 -55.4 336 12 809.4 809.4 327.5 809.7 0.03 96 11 29970 -47.5 -83.5 1 36.0 -53.7 336 12 819.6 819.6 327.7 819.9 0.03 97 10 30600 -47.7 -83.7 1 36.0 -54.2 80 19 841.5 841.5 328.2 841.8 0.04 98 10 30600 -47.9 -83.9 1 36.0 -54.3 80 19 840.7 840.8 328.2 841.1 0.03 99 10 30600 -46.7 -82.7 1 36.0 -53.6 80 19 845.2 845.2 328.3 845.6 0.04 100 9.2 31156 -44.5 -82.5 1 38.0 -52.8 874.0 874.1 328.9 874.5 0.05 101 8.8 31453 -45.3 -82.3 1 37.0 -53.4 882.1 882.1 329.1 882.6 0.05 TRP 369 7613 -37.5 -58.5 9 21.0 -38.4 260 92 313.4 313.4 286.6 313.5 0.04 WND 283 9439 -41.1 -61.6 9 20.6 -41.9 255 153 333.0 333.0 292.6 333.2 0.03 Sounding variables and indices 1000-500 mb thick: 5334.00 m Freezing level: 898.00 mb = 995.10 m = 3264.71 ft Wetbulb zero: 950.51 mb = 536.90 m = 1761.46 ft Precipitable water: 0.42 inches Sfc-500 mean rel hum: 70.97 % Est. max temperature: 9.09 C = 48.36 F Sfc-Lift cond lev (LCL): 980.25 mb = 287.31 m = 942.60 ft T: 3.27 C 700-500 lapse rate: 7.50 C/km ThetaE index: 0.41 C Layer 966.0- 925.0 mb Conv cond level (CCL): 838.28 mb = 1541.10 m = 5056.04 ft Mean mixing ratio: 3.11 g/kg Conv temperature: 9.12 C = 48.41 F Cap Strength: 9.67 C Lifted Index: 9.56 C Risk: None Lifted Index @300 mb: 29.10 C Lifted Index @700 mb: 7.56 C Showalter Index: 8.30 C Risk: None Total Totals Index: 45.70 C Risk: Scattered moderate thunderstorms Vertical Totals Index: 24.00 C Cross Totals Index: 21.70 C K Index: 9.60 Risk: None Sweat Index: 122.00 Risk: None Energy Index: 2.39 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 22.91 J/kg Max Up Vert Vel: 6.77 m/s Conv Inhibition (B-): 72840.52 J/kg Cap Strength: 9.70 C Lift Cond Lev (LCL): 869.38 mb = 1252.73 m = 4109.97 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 306 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 4 -2.3 3.3 | 128 30 -23.2 18.4 1 1000 126 200 4 1.4 3.8 | 134 27 -19.5 18.9 2 978 305 270 7 7.0 -0.0 | 137 21 -13.9 15.2 3 942 610 300 18 15.6 -9.0 | 139 8 -5.3 6.2 4 925 757 300 22 19.1 -11.0 | 156 5 -1.8 4.2 5 907 914 305 26 21.3 -14.9 | 239 0 0.4 0.2 6 873 1219 305 33 27.0 -18.9 | 302 7 6.1 -3.8 7 850 1432 310 33 25.3 -21.2 | 324 7 4.4 -6.1 8 840 1524 310 33 25.3 -21.2 | 324 7 4.4 -6.1 9 808 1829 295 18 16.3 -7.6 | 149 9 -4.6 7.5 10 777 2134 280 21 20.7 -3.6 | 179 12 -0.2 11.5 11 748 2438 270 25 25.0 -0.0 | 195 16 4.1 15.2 12 719 2743 260 26 25.6 4.5 | 193 20 4.7 19.7 13 700 2953 265 28 27.9 2.4 | 202 19 7.0 17.6 14 691 3048 260 28 27.6 4.9 | 198 21 6.7 20.0 15 637 3658 260 33 32.5 5.7 | 209 24 11.6 20.9 16 611 3962 275 43 42.8 -3.7 | 243 25 21.9 11.4 17 587 4267 275 41 40.8 -3.6 | 240 23 20.0 11.6 18 541 4877 275 43 42.8 -3.7 | 243 25 21.9 11.4 19 500 5460 270 56 56.0 -0.0 | 247 38 35.1 15.2 20 457 6096 270 66 66.0 -0.0 | 251 48 45.1 15.2 21 402 7010 270 79 79.0 -0.0 | 255 60 58.1 15.2 22 400 7050 270 74 74.0 -0.0 | 254 55 53.1 15.2 23 385 7315 265 73 72.7 6.4 | 247 56 51.8 21.5 24 369 7613 260 92 90.6 16.0 | 246 76 69.7 31.1 25 369 7620 260 88 86.7 15.3 | 245 72 65.8 30.4 26 300 9040 255 134 129.4 34.7 | 245 119 108.5 49.8 27 295 9144 255 134 129.4 34.7 | 245 119 108.5 49.8 28 283 9439 255 153 147.8 39.6 | 247 138 126.9 54.8 29 283 9449 255 153 147.8 39.6 | 247 138 126.9 54.8 30 250 10280 255 139 134.3 36.0 | 246 124 113.4 51.1 31 215 11278 250 124 116.5 42.4 | 239 112 95.6 57.6 32 205 11582 240 126 109.1 63.0 | 228 118 88.2 78.2 33 200 11760 245 129 116.9 54.5 | 234 119 96.0 69.7 34 187 12192 250 132 124.0 45.1 | 240 119 103.2 60.3 35 155 13411 260 98 96.5 17.0 | 247 82 75.6 32.2 36 150 13630 255 101 97.6 26.1 | 242 87 76.7 41.3 37 141 14021 255 102 98.5 26.4 | 242 88 77.6 41.6 38 116 15240 260 88 86.7 15.3 | 245 72 65.8 30.4 39 105 15850 270 91 91.0 -0.0 | 258 72 70.1 15.2 40 100 16154 265 73 72.7 6.4 | 247 56 51.8 21.5 41 100 16160 255 80 77.3 20.7 | 238 67 56.4 35.9 42 95 16459 255 80 77.3 20.7 | 238 67 56.4 35.9 43 91 16764 260 62 61.1 10.8 | 237 48 40.2 25.9 44 82 17374 255 67 64.7 17.3 | 233 55 43.8 32.5 45 74 17983 270 54 54.0 -0.0 | 245 36 33.1 15.2 46 71 18288 265 47 46.8 4.1 | 233 32 25.9 19.3 47 70 18350 250 45 42.3 15.4 | 215 37 21.4 30.5 48 64 18898 250 42 39.5 14.4 | 212 35 18.6 29.5 49 61 19202 250 51 47.9 17.4 | 220 42 27.0 32.6 50 55 19812 275 33 32.9 -2.9 | 224 17 12.0 12.3 51 50 20400 255 35 33.8 9.1 | 208 27 12.9 24.2 52 47 20726 255 35 33.8 9.1 | 208 27 12.9 24.2 53 43 21336 250 28 26.3 9.6 | 192 25 5.4 24.7 54 39 21946 295 34 30.8 -14.4 | 265 10 9.9 0.8 55 37 22250 290 29 27.3 -9.9 | 231 8 6.4 5.2 56 35 22555 250 32 30.1 10.9 | 199 28 9.2 26.1 57 34 22860 285 22 21.3 -5.7 | 182 9 0.4 9.5 58 30 23470 255 19 18.4 4.9 | 173 20 -2.5 20.1 59 30 23550 255 8 7.7 2.1 | 143 22 -13.2 17.2 60 29 23774 275 11 11.0 -1.0 | 145 17 -9.9 14.2 61 28 24079 220 10 6.4 7.7 | 148 27 -14.5 22.8 62 26 24384 250 19 17.9 6.5 | 172 22 -3.0 21.7 63 24 24994 235 14 11.5 8.0 | 158 25 -9.4 23.2 64 23 25298 280 15 14.8 -2.6 | 154 14 -6.1 12.5 65 22 25603 275 13 13.0 -1.1 | 150 16 -7.9 14.0 66 21 25908 335 10 4.2 -9.1 | 110 18 -16.7 6.1 67 20 26110 250 18 16.9 6.2 | 169 22 -4.0 21.3 68 20 26213 255 14 13.5 3.6 | 159 20 -7.4 18.8 69 19 26518 250 18 16.9 6.2 | 169 22 -4.0 21.3 70 16 27432 250 8 7.5 2.7 | 143 22 -13.4 17.9 71 14 28346 80 1 -1.0 -0.2 | 124 27 -21.9 15.0 72 13 28956 280 10 9.8 -1.7 | 141 17 -11.0 13.4 73 12 29261 310 12 9.2 -7.7 | 122 14 -11.7 7.4 74 12 29566 290 10 9.4 -3.4 | 136 16 -11.5 11.7 75 11 29870 340 13 4.4 -12.2 | 100 17 -16.4 2.9 76 11 30175 330 10 5.0 -8.7 | 112 17 -15.9 6.5 77 10 30600 80 19 -18.7 -3.3 | 107 41 -39.6 11.9 Wind Parameters Mean winds (0-6000m): 276.0 at 34.4 knts Storm direction: 306.0 at 25.8 knts Shear (0-3000m) pos: 5.7 neg: 3.9 tot: 9.6 10-3/s Storm rel Dir Shear (0-3000m): 71.0 deg Storm rel helicity (0-3000m) pos: 85.8 neg: -10.7 tot: 75.1 m^2/s^2 ave: 25.0 10^-3 m/s^2 rel: 0.18 Storm rel vorticity (0-3000m) horiz: 13.5 stream: 2.4 10^-3/s Energy-Hel index: 0.01 Bulk Rich Number: 0.27 Bulk Shear: 83.93 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 ------------------------------------------------------------------------------- 500 281 9 139 18| 21.9 0.0 21.9| 40.8 -1.9 38.9 77.9 0.25| 23.8 5.9 1000 298 17 141 10| 17.5 0.0 17.5| 44.5 -1.9 42.6 42.6 0.32| 18.9 6.0 1500 303 22 144 4| 11.4 0.0 11.4| 50.2 -3.7 46.5 31.0 0.29| 15.9 4.5 2000 301 22 151 5| 8.5 3.5 12.0| 60.3 -7.5 52.8 26.4 0.13| 16.5 2.1 2500 295 22 172 6| 6.8 4.1 10.9| 74.6 -8.2 66.4 26.6 0.17| 15.0 2.5 3000 288 23 187 8| 5.7 3.9 9.6| 85.8 -10.7 75.1 25.0 0.18| 13.5 2.4 4000 280 26 204 12| 6.0 3.2 9.2|196.6 -13.0 183.6 45.9 0.32| 12.6 4.0 5000 278 29 217 14| 4.8 2.9 7.7|211.7 -16.5 195.1 39.0 0.31| 10.9 3.4 6000 276 34 229 18| 4.0 3.6 7.6|260.0 -16.5 243.5 40.6 0.30| 10.7 3.2 Wrote GIF file: /home/apache/climate/data/raob//KIAD/skewt/KIAD.skewt.20251207.00.gif