UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025122200.upa.cvt Date: 0000Z 22 DEC 25 Searching for KIAD... Searching the city database file for: KIAD ... Date:0000Z 22 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 1017 98 6.4 -10.6 28 17.0 0.6 315 8 278.2 278.5 272.9 283.0 1.67 1 1011 142 6.4 -12.6 24 19.0 0.2 317 11 278.7 278.9 272.8 282.8 1.43 2 1000 223 5.8 -13.2 24 19.0 -0.3 320 17 279.0 279.2 272.9 283.0 1.38 3 925 854 0.2 -14.8 31 15.0 -4.2 320 25 279.5 279.7 273.1 283.3 1.31 4 893 1135 -2.3 -15.3 36 13.0 -6.0 316 28 279.8 280.0 273.2 283.6 1.30 5 880 1251 -3.3 -17.3 33 14.0 -7.0 316 30 279.9 280.1 273.0 283.2 1.12 6 865 1386 -4.1 -19.1 30 15.0 -7.9 323 35 280.4 280.6 273.1 283.3 0.97 7 854 1487 -4.3 -23.3 21 19.0 -8.6 328 39 281.3 281.4 273.1 283.3 0.68 8 850 1524 -3.9 -26.9 15 23.0 -8.7 330 40 282.1 282.1 273.2 283.6 0.50 9 836 1655 -3.7 -39.7 4 36.0 -9.3 328 43 283.6 283.6 273.5 284.1 0.15 10 794 2059 -6.9 -29.9 14 23.0 -11.2 325 47 284.4 284.5 274.4 285.7 0.40 11 741 2595 -9.5 -38.5 7 29.0 -13.7 315 50 287.2 287.3 275.6 287.9 0.19 12 729 2721 -8.3 -39.3 6 31.0 -12.9 311 50 289.9 289.9 276.9 290.5 0.17 13 700 3035 -9.9 -38.9 7 29.0 -14.2 305 57 291.5 291.6 277.7 292.2 0.19 14 664 3440 -12.9 -34.9 14 22.0 -16.3 295 58 292.6 292.6 278.4 293.6 0.30 15 649 3614 -13.7 -37.7 11 24.0 -17.1 291 59 293.6 293.6 278.8 294.4 0.23 16 637 3756 -13.1 -44.1 5 31.0 -17.0 287 61 295.9 295.9 279.7 296.3 0.12 17 627 3877 -11.1 -48.1 3 37.0 -15.7 283 64 299.5 299.5 281.2 299.8 0.08 18 615 4025 -10.7 -39.7 7 29.0 -15.2 280 66 301.6 301.6 282.3 302.3 0.20 19 608 4113 -11.5 -41.5 6 30.0 -15.9 280 67 301.7 301.7 282.3 302.2 0.17 20 568 4631 -15.1 -38.1 12 23.0 -18.5 277 68 303.4 303.4 283.1 304.2 0.25 21 533 5108 -19.1 -43.1 10 24.0 -22.0 272 70 304.1 304.2 283.3 304.7 0.16 22 500 5580 -23.1 -38.1 24 15.0 -25.0 265 74 304.9 304.9 283.7 305.9 0.29 23 487 5772 -24.9 -37.9 29 13.0 -26.5 265 75 305.0 305.0 283.8 306.0 0.30 24 485 5802 -25.1 -42.1 19 17.0 -26.9 265 75 305.1 305.1 283.7 305.8 0.19 25 463 6138 -27.9 -46.9 15 19.0 -29.5 265 76 305.7 305.7 283.8 306.1 0.12 26 447 6389 -30.3 -44.3 24 14.0 -31.4 265 73 305.7 305.8 283.9 306.3 0.17 27 444 6437 -30.5 -41.5 33 11.0 -31.5 265 73 306.1 306.1 284.1 306.9 0.23 28 442 6469 -30.9 -45.9 22 15.0 -32.1 265 74 306.0 306.0 284.0 306.5 0.14 29 439 6517 -31.3 -41.3 37 10.0 -32.2 265 74 306.1 306.1 284.1 306.9 0.23 30 437 6550 -31.5 -41.5 37 10.0 -32.4 265 74 306.2 306.2 284.2 307.0 0.23 31 436 6566 -31.5 -43.5 30 12.0 -32.5 265 75 306.4 306.4 284.2 307.1 0.19 32 435 6582 -31.7 -41.7 37 10.0 -32.6 265 75 306.4 306.4 284.2 307.2 0.23 33 434 6598 -31.9 -41.9 37 10.0 -32.8 265 75 306.3 306.3 284.2 307.1 0.22 34 431 6647 -32.3 -45.3 26 13.0 -33.3 265 75 306.4 306.4 284.2 307.0 0.16 35 428 6697 -32.7 -40.7 45 8.0 -33.4 265 76 306.5 306.5 284.3 307.4 0.26 36 426 6730 -32.9 -41.9 40 9.0 -33.7 265 76 306.7 306.7 284.4 307.5 0.23 37 424 6763 -33.1 -41.1 45 8.0 -33.8 265 77 306.8 306.9 284.4 307.7 0.25 38 422 6796 -33.3 -39.3 55 6.0 -33.8 265 77 307.0 307.0 284.6 308.0 0.30 39 418 6863 -33.9 -39.9 55 6.0 -34.4 265 78 307.0 307.1 284.6 308.0 0.28 40 413 6947 -34.3 -44.3 36 10.0 -35.0 265 79 307.6 307.6 284.7 308.2 0.18 41 402 7135 -36.1 -43.1 48 7.0 -36.6 265 81 307.6 307.7 284.7 308.4 0.21 42 400 7170 -36.1 -43.1 48 7.0 -36.6 265 81 308.1 308.1 284.9 308.8 0.21 43 382 7487 -37.5 -41.4 67 3.9 -37.8 265 90 310.3 310.4 285.8 311.3 0.27 44 380 7523 -37.7 -42.7 59 5.0 -38.1 265 92 310.5 310.6 285.8 311.4 0.23 45 378 7560 -37.9 -42.9 59 5.0 -38.2 265 94 310.7 310.8 285.9 311.5 0.23 46 375 7614 -38.1 -47.1 38 9.0 -38.7 265 97 311.2 311.2 285.9 311.7 0.15 47 374 7632 -38.3 -45.3 48 7.0 -38.8 265 98 311.1 311.2 285.9 311.8 0.18 48 373 7651 -38.3 -45.3 48 7.0 -38.8 265 99 311.4 311.4 286.1 312.0 0.18 49 372 7669 -38.3 -46.3 43 8.0 -38.8 264 99 311.6 311.6 286.1 312.2 0.16 50 371 7688 -37.9 -56.9 12 19.0 -38.7 264 99 312.4 312.4 286.2 312.6 0.05 51 363 7837 -37.7 -51.7 22 14.0 -38.5 262 102 314.6 314.6 287.1 314.9 0.09 52 361 7875 -37.9 -51.9 22 14.0 -38.7 261 103 314.8 314.9 287.1 315.2 0.09 53 357 7952 -38.1 -45.1 48 7.0 -38.6 260 105 315.6 315.6 287.5 316.3 0.19 54 355 7990 -38.3 -49.3 31 11.0 -38.9 259 106 315.8 315.8 287.5 316.3 0.12 55 353 8029 -38.5 -48.5 34 10.0 -39.1 258 106 316.1 316.1 287.6 316.5 0.13 56 300 9120 -47.9 -52.2 61 4.3 -48.1 255 116 317.8 317.9 288.2 318.2 0.10 57 278 9620 -50.9 -62.5 24 11.6 -51.2 250 120 320.5 320.5 288.9 320.6 0.03 58 274 9714 -51.5 -64.5 20 13.0 -51.7 255 118 321.0 321.0 289.0 321.1 0.02 59 250 10310 -51.5 -74.5 5 23.0 -51.8 255 100 329.5 329.5 291.6 329.5 0.01 60 200 11760 -53.1 -80.1 2 27.0 -53.4 260 91 348.7 348.7 296.3 348.7 0.00 61 150 13630 -53.9 -83.9 1 30.0 -54.3 265 62 377.2 377.2 301.8 377.2 0.00 62 100 16190 -59.1 -86.1 2 27.0 -59.5 270 43 413.5 413.5 306.9 413.5 0.00 63 88 16978 -65.3 -88.3 3 23.0 -65.5 267 53 416.5 416.5 307.3 416.5 0.00 64 83 17336 -62.7 -87.7 2 25.0 -63.0 265 59 428.8 428.8 308.7 428.8 0.00 65 75 17957 -64.3 -88.3 2 24.0 -64.6 275 54 438.1 438.1 309.7 438.1 0.00 66 71 18293 -62.9 -87.9 2 25.0 -63.2 288 34 448.0 448.0 310.7 448.0 0.00 67 70 18380 -64.1 -88.1 2 24.0 -64.4 260 18 447.3 447.3 310.6 447.3 0.00 68 66 18739 -66.5 -88.5 3 22.0 -66.7 253 20 449.6 449.6 310.8 449.6 0.00 69 64 18926 -63.9 -88.9 2 25.0 -64.2 241 23 459.3 459.3 311.7 459.3 0.00 70 63 19023 -64.3 -89.3 2 25.0 -64.6 244 27 460.5 460.5 311.8 460.5 0.00 71 59 19427 -61.5 -88.5 2 27.0 -61.9 258 43 475.5 475.5 313.1 475.5 0.00 72 54 19973 -64.1 -89.1 2 25.0 -64.4 267 27 481.7 481.7 313.6 481.7 0.00 73 51 20327 -60.5 -88.5 1 28.0 -61.0 251 30 498.1 498.1 314.8 498.1 0.00 74 50 20450 -60.9 -87.9 2 27.0 -61.4 245 31 500.0 500.0 314.9 500.0 0.00 75 49 20575 -61.3 -88.3 2 27.0 -61.8 245 31 501.9 501.9 315.1 501.9 0.00 76 46 20968 -59.1 -88.1 1 29.0 -59.8 245 32 516.4 516.4 316.1 516.4 0.00 77 40 21839 -60.9 -88.9 1 28.0 -61.6 249 31 532.9 532.9 317.1 532.9 0.00 78 38 22158 -59.7 -88.7 1 29.0 -60.4 257 30 543.8 543.8 317.8 543.9 0.00 79 32 23222 -62.9 -89.9 1 27.0 -63.5 218 16 562.7 562.7 318.8 562.7 0.00 80 31 23418 -61.7 -89.7 1 28.0 -62.4 229 22 571.1 571.1 319.2 571.1 0.00 81 30 23620 -62.3 -89.3 2 27.0 -63.0 240 28 574.8 574.8 319.4 574.8 0.00 82 26 24501 -62.7 -89.7 1 27.0 -63.4 257 30 597.7 597.7 320.5 597.7 0.00 83 26 24501 -60.3 -89.3 1 29.0 -61.3 257 30 604.5 604.5 320.8 604.5 0.01 84 24 24997 -62.1 -89.1 2 27.0 -63.0 244 29 613.3 613.3 321.2 613.3 0.01 85 22 25536 -60.1 -89.1 1 29.0 -61.3 244 32 634.7 634.7 322.1 634.7 0.01 86 20 26130 -60.3 -89.3 1 29.0 -61.6 255 36 651.6 651.6 322.7 651.6 0.01 87 19 26450 -60.1 -89.1 1 29.0 -61.4 257 35 661.8 661.9 323.2 661.9 0.01 88 18 26785 -61.9 -89.9 1 28.0 -63.1 249 32 666.5 666.5 323.3 666.5 0.01 89 16 27516 -60.3 -89.3 1 29.0 -61.9 246 31 694.5 694.5 324.3 694.6 0.01 90 15 27916 -63.1 -90.1 1 27.0 -64.3 251 32 698.2 698.2 324.4 698.2 0.01 91 14 28342 -61.3 -89.3 1 28.0 -62.9 256 33 718.2 718.2 325.0 718.3 0.01 92 13 28800 -63.1 -90.1 1 27.0 -64.4 250 37 727.3 727.3 325.3 727.4 0.01 93 12 29294 -60.9 -89.9 1 29.0 -62.7 246 45 752.0 752.0 326.0 752.0 0.01 94 11 29839 -57.9 -87.9 1 30.0 -60.6 255 41 781.8 781.8 326.8 781.9 0.02 95 10 30440 -57.5 -87.5 1 30.0 -60.4 255 55 804.9 804.9 327.4 805.1 0.02 96 9.7 30632 -57.5 -87.5 1 30.0 -60.5 812.0 812.0 327.5 812.1 0.02 97 9.3 30900 -54.9 -86.9 1 32.0 -58.8 831.7 831.7 328.0 831.9 0.02 98 7.8 32032 -52.1 -85.1 1 33.0 -57.6 885.8 885.9 329.1 886.2 0.04 99 7.5 32285 -53.3 -85.3 1 32.0 -58.4 891.0 891.0 329.2 891.3 0.04 TRP 274 9714 -51.5 -64.5 20 13.0 -51.7 255 118 321.0 321.0 289.0 321.1 0.02 WND 278 9620 -50.9 -62.5 24 11.6 -51.2 250 120 320.5 320.5 288.9 320.6 0.03 Sounding variables and indices 1000-500 mb thick: 5357.00 m Freezing level: 922.44 mb = 876.44 m = 2875.42 ft Wetbulb zero: 1006.41 mb = 175.62 m = 576.17 ft Precipitable water: 0.13 inches Sfc-500 mean rel hum: 15.01 % Est. max temperature: 8.58 C = 47.44 F Sfc-Lift cond lev (LCL): 781.57 mb = 2181.48 m = 7157.00 ft T: -7.49 C 700-500 lapse rate: 5.19 C/km ThetaE index: 0.37 C Layer 880.0- 865.0 mb Conv cond level (CCL): 514.82 mb = 5364.28 m = 17599.14 ft Mean mixing ratio: 1.36 g/kg Conv temperature: 32.87 C = 91.17 F Cap Strength: 18.32 C Lifted Index: 18.36 C Risk: None Lifted Index @300 mb: 24.62 C Lifted Index @700 mb: 10.47 C Showalter Index: 18.01 C Risk: None Total Totals Index: 15.40 C Risk: None Vertical Totals Index: 19.20 C Cross Totals Index: -3.80 C K Index: -36.70 Risk: None Sweat Index: 154.00 Risk: None Energy Index: 4.73 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 2.14 J/kg Max Up Vert Vel: 2.07 m/s Conv Inhibition (B-): 72044.09 J/kg Cap Strength: 18.36 C Lift Cond Lev (LCL): 739.66 mb = 2608.89 m = 8559.24 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 321 at 40 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 1017 98 315 8 5.7 -5.7 | 143 32 -19.2 25.3 1 1000 223 320 17 10.9 -13.0 | 142 23 -13.9 17.9 2 990 305 315 19 13.4 -13.4 | 147 21 -11.4 17.5 3 953 610 315 25 17.7 -17.7 | 152 15 -7.2 13.3 4 925 854 320 25 16.1 -19.2 | 143 15 -8.8 11.8 5 918 914 320 25 16.1 -19.2 | 143 15 -8.8 11.8 6 883 1219 315 29 20.5 -20.5 | 157 11 -4.3 10.5 7 850 1524 330 40 20.0 -34.6 | 53 6 -4.9 -3.7 8 817 1829 325 46 26.4 -37.7 | 347 7 1.5 -6.7 9 786 2134 325 48 27.5 -39.3 | 342 9 2.7 -8.4 10 756 2438 320 49 31.5 -37.5 | 315 9 6.6 -6.6 11 727 2743 310 50 38.3 -32.1 | 275 13 13.4 -1.2 12 700 3035 305 57 46.7 -32.7 | 275 22 21.8 -1.7 13 645 3658 290 59 55.4 -20.2 | 251 32 30.6 10.8 14 619 3962 280 66 65.0 -11.5 | 244 45 40.1 19.5 15 595 4267 280 68 67.0 -11.8 | 246 46 42.1 19.2 16 549 4877 275 68 67.7 -5.9 | 240 50 42.9 25.0 17 500 5580 265 74 73.7 6.4 | 233 62 48.9 37.4 18 485 5791 265 75 74.7 6.5 | 233 62 49.9 37.5 19 465 6096 265 76 75.7 6.6 | 234 63 50.9 37.6 20 446 6401 265 73 72.7 6.4 | 232 61 47.9 37.3 21 400 7170 265 81 80.7 7.1 | 236 68 55.8 38.0 22 392 7315 265 80 79.7 7.0 | 235 67 54.8 37.9 23 374 7620 265 98 97.6 8.5 | 242 83 72.8 39.5 24 342 8230 255 111 107.2 28.7 | 234 102 82.4 59.7 25 300 9120 255 116 112.0 30.0 | 235 106 87.2 61.0 26 299 9144 255 115 111.1 29.8 | 235 105 86.2 60.7 27 278 9620 250 120 112.8 41.0 | 231 114 87.9 72.0 28 274 9714 255 118 114.0 30.5 | 235 108 89.1 61.5 29 272 9754 250 120 112.8 41.0 | 231 114 87.9 72.0 30 250 10310 255 100 96.6 25.9 | 232 92 71.7 56.8 31 206 11582 260 84 82.7 14.6 | 232 74 57.9 45.5 32 200 11760 260 91 89.6 15.8 | 234 80 64.8 46.8 33 179 12497 265 108 107.6 9.4 | 244 92 82.7 40.4 34 163 13106 275 91 90.7 -7.9 | 251 70 65.8 23.0 35 150 13630 265 62 61.8 5.4 | 225 52 36.9 36.4 36 148 13716 265 62 61.8 5.4 | 225 52 36.9 36.4 37 128 14630 250 75 70.5 25.7 | 219 73 45.6 56.6 38 116 15240 260 85 83.7 14.8 | 232 75 58.9 45.7 39 106 15850 280 65 64.0 -11.3 | 243 44 39.2 19.7 40 100 16190 270 43 43.0 -0.0 | 210 36 18.1 31.0 41 96 16459 270 43 43.0 -0.0 | 210 36 18.1 31.0 42 82 17374 265 60 59.8 5.2 | 224 50 34.9 36.2 43 75 17983 275 54 53.8 -4.7 | 228 39 28.9 26.3 44 71 18288 290 35 32.9 -12.0 | 203 21 8.0 19.0 45 70 18380 260 18 17.7 3.1 | 168 35 -7.1 34.1 46 68 18593 265 18 17.9 1.6 | 168 33 -6.9 32.5 47 64 18898 240 22 19.1 11.0 | 172 42 -5.8 42.0 48 58 19507 260 46 45.3 8.0 | 208 44 20.4 38.9 49 55 19812 275 25 24.9 -2.2 | 180 29 0.1 28.8 50 50 20450 245 31 28.1 13.1 | 184 44 3.2 44.1 51 48 20726 245 31 28.1 13.1 | 184 44 3.2 44.1 52 43 21336 245 34 30.8 14.4 | 187 46 6.0 45.3 53 39 21946 250 30 28.2 10.3 | 185 41 3.3 41.2 54 36 22555 270 29 29.0 -0.0 | 188 31 4.1 31.0 55 34 22860 255 14 13.5 3.6 | 162 36 -11.3 34.6 56 32 23165 215 14 8.0 11.5 | 158 46 -16.8 42.4 57 30 23620 240 28 24.2 14.0 | 179 45 -0.6 45.0 58 28 24079 255 31 29.9 8.0 | 187 39 5.1 39.0 59 27 24384 265 30 29.9 2.6 | 189 34 5.0 33.6 60 25 24689 245 29 26.3 12.3 | 182 43 1.4 43.2 61 24 24994 245 29 26.3 12.3 | 182 43 1.4 43.2 62 23 25298 220 35 22.5 26.8 | 178 58 -2.4 57.8 63 22 25603 250 31 29.1 10.6 | 186 42 4.3 41.6 64 20 26130 255 36 34.8 9.3 | 194 41 9.9 40.3 65 20 26213 245 26 23.6 11.0 | 178 42 -1.3 41.9 66 19 26518 260 37 36.4 6.4 | 197 39 11.6 37.4 67 17 27127 235 25 20.5 14.3 | 174 46 -4.4 45.3 68 16 27432 245 31 28.1 13.1 | 184 44 3.2 44.1 69 13 28651 260 33 32.5 5.7 | 192 37 7.6 36.7 70 13 28956 240 41 35.5 20.5 | 192 53 10.7 51.5 71 12 29261 245 47 42.6 19.9 | 199 54 17.7 50.8 72 12 29566 255 35 33.8 9.1 | 193 41 9.0 40.0 73 10 30440 255 55 53.1 14.2 | 212 53 28.3 45.2 Wind Parameters Mean winds (0-6000m): 291.2 at 52.9 knts Storm direction: 321.2 at 39.7 knts Shear (0-3000m) pos: 3.2 neg: 6.7 tot: 9.8 10-3/s Storm rel Dir Shear (0-3000m): 128.7 deg Storm rel helicity (0-3000m) pos: 26.3 neg: -74.0 tot: -47.6 m^2/s^2 ave: -15.9 10^-3 m/s^2 rel: -0.39 Storm rel vorticity (0-3000m) horiz: 11.8 stream: -4.6 10^-3/s Energy-Hel index: 0.00 Bulk Rich Number: 0.01 Bulk Shear: 178.64 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 ------------------------------------------------------------------------------- 500 316 19 146 21| 0.0 17.3 17.3| 16.6 -0.6 15.9 31.8 0.18| 17.5 3.1 1000 317 22 146 18| 1.4 8.6 10.1| 22.7 -8.9 13.8 13.8 0.12| 11.3 1.3 1500 320 26 144 14| 6.3 5.8 12.1| 26.3 -24.6 1.8 1.2 -0.20| 13.5 -2.7 2000 322 31 139 9| 4.7 6.1 10.8| 26.3 -33.8 -7.4 -3.7 -0.29| 12.0 -3.5 2500 322 35 138 5| 3.8 5.7 9.5| 26.3 -55.1 -28.7 -11.5 -0.40| 11.4 -4.6 3000 319 38 181 3| 3.2 6.7 9.8| 26.3 -74.0 -47.6 -15.9 -0.39| 11.8 -4.6 4000 309 44 247 10| 2.4 7.4 9.8| 30.9-189.6-158.7 -39.7 -0.42| 12.4 -5.2 5000 299 49 248 19| 1.9 6.6 8.5| 35.6-276.0-240.4 -48.1 -0.44| 11.1 -4.8 6000 291 53 244 27| 1.6 6.2 7.8| 52.1-350.2-298.0 -49.7 -0.43| 10.2 -4.4 Wrote GIF file: /home/apache/climate/data/raob//KIAD/skewt/KIAD.skewt.20251222.00.gif