UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025122900.upa.cvt Date: 0000Z 29 DEC 25 Searching for KIAD... Searching the city database file for: KIAD ... Date:0000Z 29 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 1004 98 6.4 2.1 74 4.3 4.4 185 10 279.2 280.0 277.4 291.4 4.43 1 1000 120 6.2 1.9 74 4.3 4.2 185 8 279.4 280.1 277.4 291.4 4.38 2 932 692 1.0 1.0 100 0.0 1.0 206 26 279.7 280.5 277.6 291.9 4.41 3 925 753 1.2 1.2 100 0.0 1.2 215 28 280.5 281.3 278.2 293.0 4.51 4 918 814 1.2 1.2 100 0.0 1.2 221 30 281.1 281.9 278.5 293.8 4.54 5 909 894 3.8 3.8 100 0.0 3.8 228 32 284.6 285.6 281.4 300.1 5.53 6 908 903 5.0 5.0 100 0.0 5.0 229 33 285.9 287.0 282.5 302.8 6.03 7 907 912 7.4 7.1 98 0.3 7.2 230 33 288.5 289.7 284.7 308.2 6.99 8 904 939 8.8 7.6 92 1.2 8.1 230 34 290.2 291.5 285.6 310.8 7.26 9 887 1097 11.0 8.0 82 3.0 9.3 227 37 294.1 295.4 287.4 316.0 7.60 10 873 1230 11.6 6.9 73 4.7 8.9 225 39 296.0 297.3 287.7 316.9 7.16 11 850 1453 10.0 6.2 77 3.8 7.9 225 35 296.6 297.9 287.8 317.1 7.01 12 789 2067 5.2 4.3 94 0.9 4.7 235 36 297.9 299.1 287.9 317.3 6.61 13 781 2150 5.6 2.2 79 3.4 3.8 235 37 299.2 300.2 287.5 316.2 5.75 14 779 2171 7.0 -1.0 57 8.0 3.1 235 37 300.9 301.7 286.9 314.7 4.56 15 778 2182 7.6 -1.4 53 9.0 3.2 235 36 301.6 302.5 287.1 315.1 4.44 16 776 2203 7.8 -1.2 53 9.0 3.4 235 36 302.1 302.9 287.3 315.8 4.51 17 764 2332 7.4 -0.6 57 8.0 3.4 235 34 303.0 303.9 287.9 317.6 4.79 18 760 2375 7.2 -2.8 49 10.0 2.4 235 34 303.2 304.0 287.3 315.7 4.09 19 757 2408 8.0 -15.0 18 23.0 -0.5 235 33 304.5 304.7 285.1 309.5 1.57 20 755 2429 8.2 -15.8 16 24.0 -0.6 235 33 304.9 305.2 285.2 309.7 1.48 21 739 2606 6.6 -8.4 33 15.0 0.2 240 35 305.0 305.5 286.6 313.6 2.74 22 711 2922 4.4 -14.6 24 19.0 -2.6 254 38 306.0 306.3 285.9 311.5 1.73 23 706 2979 4.8 -21.2 13 26.0 -3.5 257 39 307.0 307.2 285.4 310.3 1.00 24 700 3049 4.4 -23.6 11 28.0 -4.1 260 38 307.4 307.5 285.4 310.1 0.81 25 690 3166 4.0 -31.0 6 35.0 -5.0 262 39 308.2 308.3 285.2 309.6 0.42 26 656 3574 0.8 -25.2 12 26.0 -6.5 268 43 309.1 309.2 285.9 311.6 0.75 27 625 3962 -1.1 -38.1 4 37.0 -8.8 275 44 311.2 311.2 286.1 312.0 0.23 28 621 4013 -1.5 -26.5 13 25.0 -8.3 275 43 311.3 311.4 286.6 313.7 0.71 29 612 4129 -2.3 -25.3 15 23.0 -8.7 277 43 311.7 311.8 286.9 314.4 0.80 30 608 4181 -2.9 -17.9 30 15.0 -7.9 278 43 311.6 311.9 287.6 316.7 1.54 31 607 4194 -3.1 -15.1 39 12.0 -7.4 278 43 311.5 311.9 288.1 317.8 1.95 32 605 4220 -3.3 -6.8 77 3.5 -4.8 279 43 311.6 312.3 289.9 323.6 3.80 33 604 4233 -3.5 -6.3 81 2.8 -4.7 279 43 311.5 312.2 290.0 324.0 3.95 34 602 4259 -3.5 -7.6 73 4.1 -5.3 280 43 311.8 312.5 289.7 323.2 3.59 35 598 4312 -4.1 -10.1 63 6.0 -6.5 280 43 311.7 312.2 289.1 321.2 2.97 36 597 4325 -4.1 -15.1 42 11.0 -8.0 280 43 311.8 312.2 288.2 318.3 1.98 37 596 4338 -3.9 -15.9 39 12.0 -8.1 280 44 312.2 312.6 288.2 318.3 1.86 38 580 4553 -5.5 -14.5 49 9.0 -8.7 282 46 312.8 313.2 288.6 319.8 2.14 39 573 4648 -6.3 -15.3 49 9.0 -9.4 283 47 312.9 313.3 288.6 319.6 2.03 40 565 4758 -6.7 -18.7 38 12.0 -10.5 284 48 313.7 314.0 288.3 318.9 1.55 41 554 4911 -7.7 -17.7 45 10.0 -10.9 285 50 314.3 314.6 288.7 320.0 1.72 42 531 5239 -10.3 -19.3 48 9.0 -13.0 288 56 315.0 315.3 288.8 320.2 1.56 43 527 5297 -10.9 -19.9 47 9.0 -13.6 288 57 315.0 315.3 288.7 320.0 1.50 44 521 5385 -11.7 -18.7 56 7.0 -13.8 289 58 315.0 315.4 288.9 320.6 1.68 45 519 5415 -11.9 -16.7 67 4.8 -13.5 289 59 315.2 315.5 289.3 321.7 1.99 46 517 5444 -11.7 -13.3 88 1.6 -12.3 290 59 315.7 316.3 290.1 324.4 2.65 47 510 5549 -12.3 -13.6 90 1.3 -12.8 289 60 316.2 316.8 290.2 324.8 2.62 48 507 5594 -12.3 -15.3 78 3.0 -13.3 288 60 316.8 317.2 290.1 324.4 2.29 49 500 5700 -13.3 -15.5 83 2.2 -14.0 285 60 316.8 317.3 290.1 324.4 2.29 50 487 5900 -14.7 -15.1 97 0.4 -14.9 285 60 317.5 318.0 290.4 325.5 2.43 51 476 6072 -16.1 -16.1 100 0.0 -16.1 285 60 317.8 318.3 290.4 325.4 2.29 52 454 6427 -19.1 -19.5 97 0.4 -19.2 285 59 318.4 318.8 290.1 324.5 1.80 53 450 6493 -19.5 -21.3 86 1.8 -20.0 285 59 318.7 319.0 290.0 324.0 1.55 54 446 6559 -19.9 -21.2 89 1.3 -20.3 285 59 319.0 319.3 290.1 324.4 1.58 55 400 7360 -23.9 -30.9 52 7.0 -25.2 285 58 323.9 324.1 290.7 326.5 0.73 56 300 9390 -41.5 -45.1 68 3.6 -41.8 280 59 326.9 326.9 291.0 327.7 0.23 57 250 10600 -51.7 -56.0 60 4.3 -51.8 295 61 329.2 329.2 291.6 329.5 0.08 58 200 12010 -62.5 -66.8 56 4.3 -62.6 300 96 333.8 333.8 292.7 333.9 0.02 59 184 12523 -65.7 -69.9 56 4.2 -65.7 290 94 336.6 336.7 293.5 336.7 0.02 60 173 12900 -64.5 -74.1 26 9.6 -64.6 295 110 344.6 344.6 295.4 344.7 0.01 61 150 13780 -61.7 -83.7 4 22.0 -61.9 280 79 363.8 363.8 299.4 363.8 0.00 62 100 16270 -67.1 -88.1 4 21.0 -67.2 290 64 398.1 398.1 304.9 398.1 0.00 63 95 16580 -66.1 -88.1 3 22.0 -66.2 291 61 405.9 405.9 306.0 405.9 0.00 64 87 17108 -68.9 -88.9 4 20.0 -69.0 297 48 410.6 410.6 306.6 410.6 0.00 65 81 17538 -65.7 -87.7 3 22.0 -65.9 292 40 425.7 425.7 308.4 425.7 0.00 66 76 17923 -67.7 -88.7 3 21.0 -67.8 297 38 429.3 429.3 308.7 429.3 0.00 67 71 18334 -65.5 -88.5 3 23.0 -65.7 308 36 442.5 442.5 310.1 442.5 0.00 68 70 18420 -66.5 -88.5 3 22.0 -66.7 305 30 442.1 442.1 310.1 442.1 0.00 69 67 18684 -67.3 -89.3 3 22.0 -67.5 308 25 446.0 446.0 310.5 446.0 0.00 70 65 18868 -65.3 -89.3 2 24.0 -65.5 310 22 454.2 454.2 311.3 454.2 0.00 71 61 19253 -66.5 -89.5 3 23.0 -66.7 248 18 459.9 459.9 311.8 459.9 0.00 72 55 19882 -64.5 -89.5 2 25.0 -64.8 287 26 478.3 478.3 313.3 478.3 0.00 73 50 20460 -67.5 -90.5 2 23.0 -67.7 315 22 484.4 484.4 313.8 484.4 0.00 74 43 21365 -70.1 -91.1 3 21.0 -70.3 279 14 499.4 499.4 314.9 499.4 0.00 75 42 21506 -69.7 -92.7 2 23.0 -69.9 277 16 503.7 503.7 315.2 503.7 0.00 76 41 21651 -65.9 -90.9 2 25.0 -66.2 275 18 516.7 516.7 316.1 516.7 0.00 77 38 22112 -66.9 -90.9 2 24.0 -67.2 294 23 525.5 525.5 316.6 525.5 0.00 78 35 22615 -63.3 -90.3 1 27.0 -63.8 311 16 547.4 547.4 317.9 547.4 0.00 79 30 23560 -65.1 -91.1 2 26.0 -65.6 280 23 567.2 567.2 319.0 567.2 0.00 80 27 24199 -66.1 -92.1 1 26.0 -66.6 292 20 581.7 581.7 319.8 581.7 0.00 81 26 24428 -64.7 -91.7 1 27.0 -65.3 293 19 592.0 592.0 320.2 592.0 0.00 82 25 24667 -65.5 -91.5 2 26.0 -66.1 281 21 596.4 596.4 320.5 596.4 0.00 83 20 26030 -62.9 -90.9 1 28.0 -63.8 275 32 643.6 643.6 322.4 643.7 0.00 84 19 26346 -63.3 -91.3 1 28.0 -64.3 278 32 651.9 651.9 322.7 651.9 0.00 85 18 26680 -61.3 -90.3 1 29.0 -62.6 271 33 668.4 668.4 323.4 668.4 0.01 86 17 27034 -61.9 -90.9 1 29.0 -63.1 269 32 677.5 677.5 323.7 677.5 0.01 87 16 27412 -59.3 -90.3 1 31.0 -61.0 280 42 697.8 697.8 324.4 697.8 0.01 88 16 27412 -58.9 -89.9 1 31.0 -60.7 280 42 699.1 699.1 324.4 699.2 0.01 89 15 27817 -58.7 -89.7 1 31.0 -60.6 270 48 712.8 712.8 324.8 712.9 0.01 90 14 28251 -58.9 -89.9 1 31.0 -60.9 265 55 726.3 726.3 325.3 726.4 0.01 91 14 28251 -56.1 -89.1 1 33.0 -58.7 265 55 735.8 735.8 325.6 735.9 0.01 92 13 28722 -56.3 -88.3 1 32.0 -59.0 265 62 750.9 750.9 326.0 751.0 0.01 93 12 29227 -59.5 -89.5 1 30.0 -61.6 268 59 756.9 756.9 326.1 757.0 0.01 94 10 30380 -55.1 -88.1 1 33.0 -58.7 265 73 813.9 813.9 327.6 814.0 0.02 95 9.9 30444 -54.7 -87.7 1 33.0 -58.5 817.7 817.7 327.7 817.9 0.02 96 9.6 30641 -55.9 -87.9 1 32.0 -59.4 820.4 820.4 327.7 820.6 0.02 97 8.9 31124 -54.3 -87.3 1 33.0 -58.5 844.5 844.6 328.2 844.7 0.02 98 8.7 31270 -55.1 -88.1 1 33.0 -59.1 846.9 847.0 328.3 847.1 0.02 99 8.6 31344 -53.9 -86.9 1 33.0 -58.4 854.4 854.4 328.5 854.6 0.02 100 8.1 31726 -56.3 -88.3 1 32.0 -60.1 859.7 859.7 328.6 859.8 0.02 TRP 184 12523 -65.7 -69.9 56 4.2 -65.7 290 94 336.6 336.7 293.5 336.7 0.02 WND 173 12900 -64.5 -74.1 26 9.6 -64.6 295 110 344.6 344.6 295.4 344.7 0.01 Sounding variables and indices 1000-500 mb thick: 5580.00 m Freezing level: 642.95 mb = 3737.37 m = 12261.56 ft Wetbulb zero: 757.54 mb = 2401.63 m = 7879.26 ft Precipitable water: 0.81 inches Sfc-500 mean rel hum: 53.43 % Est. max temperature: 23.71 C = 74.67 F Sfc-Lift cond lev (LCL): 939.86 mb = 624.03 m = 2047.31 ft T: 1.62 C 700-500 lapse rate: 6.68 C/km ThetaE index: 8.06 C Layer 760.0- 755.0 mb Conv cond level (CCL): 940.63 mb = 617.36 m = 2025.45 ft Mean mixing ratio: 4.59 g/kg Conv temperature: 6.85 C = 44.34 F Cap Strength: 20.73 C Lifted Index: 20.61 C Risk: None Lifted Index @300 mb: 23.96 C Lifted Index @700 mb: 17.97 C Showalter Index: 4.73 C Risk: None Total Totals Index: 42.80 C Risk: None Vertical Totals Index: 23.30 C Cross Totals Index: 19.50 C K Index: 1.50 Risk: None Sweat Index: 337.65 Risk: Showers and thunderstorms possible Energy Index: 1.49 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 19.50 J/kg Max Up Vert Vel: 6.25 m/s Conv Inhibition (B-): 0.00 J/kg Cap Strength: 20.38 C Lift Cond Lev (LCL): 929.96 mb = 709.90 m = 2329.04 ft Lev Free Conv (LFC): 924.96 mb = 753.32 m = 2471.48 ft Equ Level (EL): 914.96 mb = 841.08 m = 2759.41 ft B at Equ Level: 14.26 J/kg Max Parcel Lev (MPL): 904.96 mb = 930.64 m = 3053.25 ft Wind level data Storm motion: 292 at 31 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 1004 98 185 10 0.9 10.0 | 128 35 -27.4 21.6 1 1000 120 185 8 0.7 8.0 | 125 34 -27.6 19.6 2 977 305 185 17 1.5 16.9 | 137 39 -26.8 28.5 3 941 610 195 23 6.0 22.2 | 147 41 -22.3 33.8 4 925 753 215 28 16.1 22.9 | 161 37 -12.2 34.5 5 907 914 230 33 25.3 21.2 | 175 33 -3.0 32.8 6 874 1219 225 39 27.6 27.6 | 179 39 -0.7 39.2 7 850 1453 225 35 24.7 24.7 | 174 37 -3.5 36.4 8 812 1829 235 34 27.9 19.5 | 179 31 -0.4 31.1 9 782 2134 235 37 30.3 21.2 | 184 33 2.0 32.8 10 754 2438 235 33 27.0 18.9 | 178 31 -1.2 30.5 11 727 2743 245 36 32.6 15.2 | 189 27 4.3 26.8 12 700 3048 260 40 39.4 6.9 | 211 22 11.1 18.6 13 700 3049 260 38 37.4 6.6 | 207 20 9.1 18.2 14 648 3658 270 44 44.0 -0.0 | 234 20 15.7 11.6 15 600 4267 280 43 42.3 -7.5 | 254 15 14.1 4.1 16 555 4877 285 50 48.3 -12.9 | 274 20 20.0 -1.3 17 514 5486 290 60 56.4 -20.5 | 288 29 28.1 -8.9 18 500 5700 285 60 58.0 -15.5 | 278 30 29.7 -3.9 19 474 6096 285 60 58.0 -15.5 | 278 30 29.7 -3.9 20 400 7360 285 58 56.0 -15.0 | 277 28 27.7 -3.4 21 386 7620 285 58 56.0 -15.0 | 277 28 27.7 -3.4 22 311 9144 285 58 56.0 -15.0 | 277 28 27.7 -3.4 23 300 9390 280 59 58.1 -10.2 | 267 30 29.8 1.4 24 284 9754 280 65 64.0 -11.3 | 269 36 35.7 0.3 25 250 10600 295 61 55.3 -25.8 | 298 31 27.0 -14.2 26 236 10973 295 60 54.4 -25.4 | 298 30 26.1 -13.8 27 225 11278 305 70 57.3 -40.2 | 314 41 29.1 -28.5 28 200 12010 300 96 83.1 -48.0 | 304 66 54.9 -36.4 29 184 12523 290 94 88.3 -32.1 | 289 63 60.1 -20.5 30 176 12802 285 102 98.5 -26.4 | 282 72 70.2 -14.8 31 173 12900 295 110 99.7 -46.5 | 296 79 71.4 -34.9 32 167 13106 295 110 99.7 -46.5 | 296 79 71.4 -34.9 33 159 13411 300 94 81.4 -47.0 | 304 64 53.1 -35.4 34 152 13716 290 74 69.5 -25.3 | 288 43 41.3 -13.7 35 150 13780 280 79 77.8 -13.7 | 272 50 49.5 -2.1 36 144 14021 280 81 79.8 -14.1 | 273 52 51.5 -2.5 37 131 14630 280 91 89.6 -15.8 | 274 61 61.3 -4.2 38 118 15240 290 79 74.2 -27.0 | 289 48 46.0 -15.4 39 100 16270 290 64 60.1 -21.9 | 288 33 31.9 -10.3 40 97 16459 290 64 60.1 -21.9 | 288 33 31.9 -10.3 41 83 17374 300 41 35.5 -20.5 | 321 11 7.2 -8.9 42 79 17678 285 39 37.7 -10.1 | 261 10 9.4 1.5 43 75 17983 300 38 32.9 -19.0 | 328 9 4.6 -7.4 44 72 18288 310 39 29.9 -25.1 | 353 14 1.6 -13.5 45 70 18420 305 30 24.6 -17.2 | 33 7 -3.7 -5.6 46 65 18898 310 21 16.1 -13.5 | 81 12 -12.2 -1.9 47 62 19202 245 17 15.4 7.2 | 146 23 -12.9 18.8 48 56 19812 285 27 26.1 -7.0 | 155 5 -2.2 4.6 49 50 20422 300 20 17.3 -10.0 | 98 11 -11.0 1.6 50 50 20460 315 22 15.6 -15.6 | 73 13 -12.7 -4.0 51 48 20726 320 21 13.5 -16.1 | 73 15 -14.8 -4.5 52 46 21031 315 15 10.6 -10.6 | 93 18 -17.7 1.0 53 43 21336 280 14 13.8 -2.4 | 122 17 -14.5 9.2 54 39 21946 270 21 21.0 -0.0 | 148 14 -7.3 11.6 55 37 22250 310 24 18.4 -15.4 | 69 11 -9.9 -3.8 56 35 22555 320 17 10.9 -13.0 | 85 17 -17.4 -1.4 57 34 22860 280 11 10.8 -1.9 | 119 20 -17.4 9.7 58 32 23165 255 12 11.6 3.1 | 131 22 -16.7 14.7 59 30 23470 270 23 23.0 -0.0 | 156 13 -5.3 11.6 60 30 23560 280 23 22.7 -4.0 | 144 9 -5.6 7.6 61 26 24384 295 19 17.2 -8.0 | 108 12 -11.1 3.6 62 25 24689 280 21 20.7 -3.6 | 136 11 -7.6 8.0 63 20 25908 265 23 22.9 2.0 | 158 15 -5.4 13.6 64 20 26030 275 32 31.9 -2.8 | 202 10 3.6 8.8 65 19 26518 280 32 31.5 -5.6 | 208 7 3.2 6.0 66 18 26822 265 33 32.9 2.9 | 198 15 4.6 14.5 67 17 27127 270 31 31.0 -0.0 | 193 12 2.7 11.6 68 16 27432 280 42 41.4 -7.3 | 252 14 13.1 4.3 69 15 28042 265 51 50.8 4.4 | 235 28 22.5 16.1 70 13 28651 265 62 61.8 5.4 | 243 38 33.5 17.0 71 11 29566 270 57 57.0 -0.0 | 248 31 28.7 11.6 72 10 30380 265 73 72.7 6.4 | 248 48 44.4 18.0 Wind Parameters Mean winds (0-6000m): 262.3 at 40.8 knts Storm direction: 292.3 at 30.6 knts Shear (0-3000m) pos: 6.4 neg: 0.0 tot: 6.4 10-3/s Storm rel Dir Shear (0-3000m): 80.5 deg Storm rel helicity (0-3000m) pos: 459.3 neg: -45.9 tot: 413.5 m^2/s^2 ave: 137.8 10^-3 m/s^2 rel: 0.64 Storm rel vorticity (0-3000m) horiz: 12.3 stream: 7.9 10^-3/s Energy-Hel index: 0.04 Bulk Rich Number: 0.09 Bulk Shear: 205.29 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 ------------------------------------------------------------------------------- 500 189 17 137 38| 13.4 0.0 13.4|122.8 0.0 122.8 245.7 0.89| 14.0 12.4 1000 209 23 152 36| 15.4 0.0 15.4|317.7 0.0 317.7 317.7 0.87| 19.0 16.6 1500 217 28 161 36| 9.7 0.0 9.7|332.4 -24.6 307.7 205.2 0.70| 15.3 10.7 2000 222 29 166 35| 8.0 0.0 8.0|364.9 -24.6 340.2 170.1 0.69| 13.0 9.0 2500 225 31 169 34| 6.2 0.0 6.2|384.9 -45.9 339.1 135.6 0.61| 11.8 7.2 3000 230 32 173 32| 6.4 0.0 6.4|459.3 -45.9 413.5 137.8 0.64| 12.3 7.9 4000 243 34 185 28| 5.8 0.0 5.8|523.5 -45.9 477.7 119.4 0.69| 11.0 7.6 5000 253 37 198 23| 5.8 0.0 5.8|570.4 -45.9 524.6 104.9 0.69| 10.3 7.1 6000 262 41 215 21| 5.4 0.2 5.6|593.9 -84.6 509.3 84.9 0.60| 9.6 5.8 Wrote GIF file: /home/apache/climate/data/raob//KIAD/skewt/KIAD.skewt.20251229.00.gif