UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025122812.upa.cvt Date: 1200Z 28 DEC 25 Searching for KIAD... Searching the city database file for: KIAD ... Date:1200Z 28 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 1012 98 2.2 -1.2 78 3.4 0.8 170 7 274.4 275.0 273.3 283.8 3.46 1 1000 181 1.2 -1.9 80 3.1 -0.0 165 9 274.4 274.9 273.1 283.4 3.32 2 949 599 -2.5 -2.5 100 0.0 -2.5 223 11 274.7 275.3 273.4 283.9 3.35 3 939 684 -1.9 -1.9 100 0.0 -1.9 229 12 276.2 276.8 274.5 285.9 3.54 4 925 803 -2.7 -2.7 100 0.0 -2.7 235 13 276.5 277.1 274.5 285.9 3.38 5 913 907 -3.3 -3.3 100 0.0 -3.3 249 14 277.0 277.5 274.6 286.0 3.28 6 911 924 -2.3 -2.3 100 0.0 -2.3 250 14 278.2 278.8 275.6 288.0 3.54 7 909 942 3.0 2.3 95 0.7 2.7 251 14 283.8 284.6 280.3 297.7 4.97 8 907 960 6.2 3.8 85 2.4 5.0 252 14 287.3 288.2 282.5 302.9 5.54 9 905 978 7.0 3.0 76 4.0 5.0 252 14 288.3 289.2 282.7 303.2 5.25 10 901 1014 7.6 -2.4 49 10.0 3.1 253 14 289.2 289.9 281.1 299.6 3.55 11 894 1079 9.8 -4.2 37 14.0 3.6 256 15 292.2 292.7 281.9 301.4 3.13 12 886 1153 10.6 -6.4 30 17.0 3.4 258 15 293.7 294.2 282.1 301.7 2.67 13 877 1238 10.2 -4.8 34 15.0 3.6 260 15 294.2 294.7 282.7 303.3 3.05 14 866 1343 10.2 -8.8 25 19.0 2.5 258 15 295.3 295.7 282.3 302.1 2.27 15 850 1498 9.4 -11.6 21 21.0 1.4 255 15 296.0 296.3 282.0 301.7 1.85 16 845 1547 9.2 -14.8 17 24.0 0.6 253 13 296.3 296.5 281.7 300.7 1.43 17 825 1745 8.0 -12.0 23 20.0 0.4 275 12 297.1 297.4 282.5 302.7 1.84 18 820 1795 7.6 -9.4 29 17.0 0.8 281 12 297.1 297.6 283.1 304.1 2.28 19 818 1815 7.4 -6.6 36 14.0 1.4 283 12 297.1 297.7 283.7 305.8 2.85 20 803 1967 6.4 -7.6 36 14.0 0.5 287 12 297.7 298.1 283.7 305.8 2.68 21 791 2090 5.4 -11.6 28 17.0 -1.0 289 11 297.9 298.2 283.0 304.0 1.99 22 788 2121 5.4 -13.6 24 19.0 -1.4 290 11 298.2 298.5 282.8 303.5 1.70 23 786 2142 5.2 -8.8 36 14.0 -0.4 290 11 298.2 298.6 283.7 305.8 2.50 24 741 2622 3.6 -19.4 17 23.0 -3.7 289 24 301.5 301.7 283.4 305.1 1.11 25 738 2655 3.6 -23.4 12 27.0 -4.3 288 24 301.9 302.0 283.2 304.4 0.79 26 725 2799 2.6 -23.4 13 26.0 -4.9 284 25 302.3 302.5 283.4 304.9 0.80 27 706 3013 0.6 -15.4 29 16.0 -4.9 281 27 302.4 302.7 284.4 307.6 1.63 28 700 3081 0.2 -16.8 27 17.0 -5.4 280 27 302.7 303.0 284.3 307.4 1.46 29 661 3538 -3.1 -20.1 26 17.0 -8.1 288 23 304.0 304.2 284.5 307.8 1.17 30 627 3954 -5.5 -30.5 12 25.0 -11.1 288 26 305.9 306.0 284.4 307.5 0.48 31 625 3979 -5.5 -26.5 17 21.0 -10.7 287 27 306.2 306.3 284.8 308.5 0.70 32 613 4131 -6.5 -26.5 19 20.0 -11.4 286 29 306.7 306.8 285.0 309.1 0.71 33 596 4350 -7.7 -27.7 18 20.0 -12.4 287 32 307.8 307.9 285.3 310.0 0.66 34 592 4402 -7.9 -31.9 13 24.0 -13.0 288 33 308.2 308.2 285.2 309.7 0.45 35 588 4455 -7.5 -43.5 4 36.0 -13.3 289 34 309.2 309.2 285.2 309.7 0.14 36 573 4656 -8.5 -37.5 8 29.0 -13.8 294 38 310.3 310.4 285.8 311.3 0.27 37 571 4683 -8.3 -29.3 17 21.0 -13.1 295 39 310.9 311.0 286.4 312.9 0.59 38 561 4820 -9.5 -15.5 62 6.0 -11.5 298 42 311.0 311.4 288.0 317.7 2.04 39 558 4861 -9.9 -16.9 57 7.0 -12.1 299 42 311.1 311.4 287.8 317.0 1.82 40 554 4917 -10.5 -16.5 61 6.0 -12.4 300 43 311.0 311.3 287.8 317.2 1.90 41 549 4986 -10.9 -20.9 44 10.0 -13.7 300 44 311.3 311.6 287.3 315.7 1.32 42 546 5028 -11.3 -21.3 43 10.0 -14.0 300 44 311.3 311.6 287.3 315.6 1.28 43 544 5057 -11.5 -16.3 68 4.8 -13.0 300 45 311.4 311.8 288.1 317.8 1.97 44 542 5085 -11.9 -14.9 78 3.0 -12.9 300 45 311.3 311.7 288.2 318.5 2.22 45 522 5372 -12.5 -14.5 85 2.0 -13.2 300 48 313.9 314.4 289.3 321.7 2.38 46 511 5535 -13.7 -13.8 99 0.1 -13.7 300 49 314.4 314.9 289.6 322.8 2.58 47 500 5700 -14.1 -15.3 91 1.2 -14.5 300 51 315.8 316.3 289.8 323.5 2.33 48 489 5869 -15.1 -16.7 88 1.6 -15.6 300 51 316.6 317.0 289.9 323.6 2.12 49 486 5915 -15.5 -16.8 90 1.3 -15.9 300 52 316.7 317.1 289.9 323.7 2.11 50 480 6009 -15.7 -18.4 80 2.7 -16.5 300 52 317.6 317.9 289.9 323.8 1.87 51 470 6168 -16.5 -20.9 69 4.4 -17.7 300 53 318.5 318.8 289.9 323.7 1.54 52 457 6378 -17.7 -22.7 65 5.0 -19.0 299 55 319.6 319.8 290.0 324.2 1.35 53 451 6477 -18.3 -23.3 65 5.0 -19.6 299 56 320.0 320.3 290.1 324.5 1.30 54 436 6728 -20.7 -23.5 78 2.8 -21.4 298 58 320.1 320.4 290.2 324.6 1.32 55 400 7360 -25.5 -29.2 71 3.7 -26.2 295 65 321.8 322.0 290.2 324.9 0.85 56 300 9380 -41.9 -46.9 58 5.0 -42.2 305 84 326.3 326.3 290.9 327.0 0.19 57 250 10590 -50.9 -57.9 43 7.0 -51.1 300 88 330.4 330.4 291.9 330.6 0.06 58 200 12000 -62.5 -68.5 44 6.0 -62.6 300 98 333.8 333.8 292.7 333.9 0.02 59 181 12616 -64.5 -70.5 43 6.0 -64.6 295 106 340.2 340.2 294.4 340.3 0.02 60 179 12684 -64.7 -70.7 43 6.0 -64.8 295 105 340.9 340.9 294.6 341.0 0.02 61 150 13770 -63.5 -83.5 5 20.0 -63.6 300 82 360.7 360.7 298.8 360.7 0.00 62 100 16240 -66.1 -87.1 4 21.0 -66.2 320 68 400.0 400.0 305.2 400.0 0.00 63 94 16613 -67.9 -87.9 4 20.0 -68.0 317 63 403.6 403.6 305.7 403.6 0.00 64 89 16943 -65.9 -87.9 3 22.0 -66.1 309 51 414.0 414.0 307.0 414.0 0.00 65 78 17738 -68.1 -88.1 4 20.0 -68.2 286 41 425.3 425.3 308.3 425.3 0.00 66 77 17816 -67.7 -89.7 3 22.0 -67.8 286 40 427.7 427.7 308.6 427.7 0.00 67 76 17895 -63.7 -87.7 2 24.0 -64.0 287 38 437.7 437.7 309.6 437.7 0.00 68 73 18142 -62.5 -87.5 2 25.0 -62.8 289 34 445.3 445.3 310.4 445.3 0.00 69 70 18400 -64.3 -88.3 2 24.0 -64.6 285 23 446.8 446.8 310.6 446.8 0.00 70 69 18488 -64.5 -88.5 2 24.0 -64.7 288 23 448.2 448.2 310.7 448.2 0.00 71 68 18578 -63.3 -88.3 2 25.0 -63.6 290 24 452.7 452.7 311.1 452.7 0.00 72 63 19047 -63.7 -88.7 2 25.0 -64.0 300 19 461.8 461.8 312.0 461.8 0.00 73 56 19763 -67.9 -89.9 3 22.0 -68.1 53 11 468.1 468.1 312.5 468.1 0.00 74 56 19763 -67.9 -89.9 3 22.0 -68.1 53 11 468.1 468.1 312.5 468.1 0.00 75 54 19983 -65.7 -89.7 2 24.0 -66.0 22 11 478.0 478.0 313.3 478.0 0.00 76 52 20212 -65.5 -89.5 2 24.0 -65.8 355 14 483.7 483.7 313.7 483.7 0.00 77 50 20450 -67.1 -89.1 3 22.0 -67.3 290 8 485.4 485.4 313.9 485.4 0.00 78 48 20695 -68.5 -90.5 3 22.0 -68.7 312 10 487.7 487.7 314.1 487.7 0.00 79 46 20950 -68.5 -90.5 3 22.0 -68.7 304 12 493.7 493.7 314.5 493.7 0.00 80 45 21083 -66.7 -89.7 3 23.0 -67.0 297 14 501.2 501.2 315.0 501.2 0.00 81 44 21218 -66.9 -90.9 2 24.0 -67.2 291 15 503.9 503.9 315.2 503.9 0.00 82 43 21358 -64.7 -89.7 2 25.0 -65.1 287 16 512.7 512.7 315.8 512.7 0.00 83 37 22267 -68.1 -91.1 2 23.0 -68.4 326 14 526.4 526.4 316.7 526.5 0.00 84 30 23540 -63.7 -89.7 2 26.0 -64.3 310 26 571.0 571.0 319.2 571.0 0.00 85 26 24416 -64.5 -90.5 2 26.0 -65.1 285 20 592.6 592.6 320.3 592.6 0.00 86 20 26030 -61.9 -89.9 1 28.0 -63.0 275 45 646.7 646.7 322.6 646.7 0.01 87 19 26348 -61.5 -90.5 1 29.0 -62.7 275 46 657.5 657.5 323.0 657.5 0.01 88 18 26685 -59.3 -89.3 1 30.0 -60.9 275 48 674.7 674.7 323.6 674.7 0.01 89 16 27425 -57.7 -87.7 1 30.0 -59.7 275 50 703.0 703.0 324.6 703.1 0.01 90 16 27425 -57.3 -87.3 1 30.0 -59.4 275 50 704.3 704.3 324.6 704.4 0.01 TRP 179 12684 -64.7 -70.7 43 6.0 -64.8 295 105 340.9 340.9 294.6 341.0 0.02 WND 181 12616 -64.5 -70.5 43 6.0 -64.6 295 106 340.2 340.2 294.4 340.3 0.02 Sounding variables and indices 1000-500 mb thick: 5519.00 m Freezing level: 983.46 mb = 316.71 m = 1039.08 ft Freezing level: 910.13 mb = 931.57 m = 3056.30 ft Freezing level: 697.64 mb = 3108.67 m = 10198.92 ft Wetbulb zero: 1000.53 mb = 177.31 m = 581.73 ft Precipitable water: 0.50 inches Sfc-500 mean rel hum: 43.39 % Est. max temperature: 23.30 C = 73.93 F Sfc-Lift cond lev (LCL): 959.94 mb = 507.86 m = 1666.18 ft T: -1.69 C 700-500 lapse rate: 5.46 C/km ThetaE index: 3.64 C Layer 901.0- 894.0 mb Conv cond level (CCL): 950.20 mb = 589.39 m = 1933.67 ft Mean mixing ratio: 3.37 g/kg Conv temperature: 2.51 C = 36.52 F Cap Strength: 25.42 C Lifted Index: 26.37 C Risk: None Lifted Index @300 mb: 29.74 C Lifted Index @700 mb: 19.63 C Showalter Index: 13.71 C Risk: None Total Totals Index: 26.00 C Risk: None Vertical Totals Index: 23.50 C Cross Totals Index: 2.50 C K Index: -5.10 Risk: None Sweat Index: 81.00 Risk: None Energy Index: 4.45 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 12.11 J/kg Max Up Vert Vel: 4.92 m/s Conv Inhibition (B-): 50906.19 J/kg Cap Strength: 26.08 C Lift Cond Lev (LCL): 943.33 mb = 647.06 m = 2122.86 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 318 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 1012 98 170 7 -1.2 6.9 | 146 26 -14.5 21.8 1 1000 181 165 9 -2.3 8.7 | 146 28 -15.6 23.6 2 985 305 175 9 -0.8 9.0 | 149 28 -14.1 23.8 3 948 610 225 11 7.8 7.8 | 166 23 -5.5 22.6 4 925 803 235 13 10.6 7.5 | 173 22 -2.6 22.3 5 913 914 250 14 13.2 4.8 | 180 20 -0.1 19.6 6 879 1219 260 15 14.8 2.6 | 185 18 1.5 17.5 7 850 1498 255 15 14.5 3.9 | 184 19 1.2 18.7 8 847 1524 250 13 12.2 4.4 | 177 19 -1.1 19.3 9 816 1829 285 12 11.6 -3.1 | 172 12 -1.7 11.8 10 786 2134 290 11 10.3 -3.8 | 165 11 -3.0 11.1 11 757 2438 295 22 19.9 -9.3 | 230 9 6.6 5.6 12 730 2743 285 25 24.1 -6.5 | 232 14 10.9 8.4 13 703 3048 280 27 26.6 -4.7 | 233 17 13.3 10.2 14 700 3081 280 27 26.6 -4.7 | 233 17 13.3 10.2 15 650 3658 290 22 20.7 -7.5 | 225 10 7.4 7.3 16 601 4267 285 31 29.9 -8.0 | 248 18 16.6 6.8 17 556 4877 300 43 37.2 -21.5 | 286 25 23.9 -6.6 18 500 5700 300 51 44.2 -25.5 | 289 33 30.9 -10.6 19 474 6096 300 52 45.0 -26.0 | 289 34 31.7 -11.1 20 400 7360 295 65 58.9 -27.5 | 285 47 45.6 -12.6 21 385 7620 300 65 56.3 -32.5 | 292 46 43.0 -17.6 22 369 7925 300 73 63.2 -36.5 | 293 54 49.9 -21.6 23 310 9144 300 79 68.4 -39.5 | 294 60 55.1 -24.6 24 300 9380 305 84 68.8 -48.2 | 301 65 55.5 -33.3 25 250 10590 300 88 76.2 -44.0 | 295 69 62.9 -29.1 26 200 12000 300 98 84.9 -49.0 | 296 79 71.6 -34.1 27 181 12616 295 106 96.1 -44.8 | 290 88 82.8 -29.9 28 179 12684 295 105 95.2 -44.4 | 290 87 81.9 -29.5 29 176 12802 295 106 96.1 -44.8 | 290 88 82.8 -29.9 30 151 13716 310 87 66.6 -55.9 | 308 67 53.3 -41.1 31 150 13770 300 82 71.0 -41.0 | 294 63 57.7 -26.1 32 137 14326 300 75 65.0 -37.5 | 294 56 51.7 -22.6 33 130 14630 290 87 81.8 -29.8 | 282 70 68.5 -14.9 34 124 14935 295 92 83.4 -38.9 | 289 74 70.1 -24.0 35 118 15240 295 80 72.5 -33.8 | 288 62 59.2 -18.9 36 112 15545 295 77 69.8 -32.5 | 287 59 56.5 -17.7 37 107 15850 295 94 85.2 -39.7 | 289 76 71.9 -24.9 38 100 16240 320 68 43.7 -52.1 | 321 48 30.4 -37.2 39 96 16459 320 68 43.7 -52.1 | 321 48 30.4 -37.2 40 83 17374 300 36 31.2 -18.0 | 280 18 17.9 -3.1 41 79 17678 285 42 40.6 -10.9 | 262 28 27.3 4.0 42 71 18288 290 32 30.1 -10.9 | 257 17 16.8 3.9 43 70 18400 285 23 22.2 -6.0 | 225 13 8.9 8.9 44 65 18898 300 25 21.7 -12.5 | 254 9 8.4 2.4 45 61 19202 300 13 11.3 -6.5 | 166 9 -2.0 8.4 46 58 19507 45 10 -7.1 -7.1 | 111 22 -20.4 7.8 47 56 19812 55 11 -9.0 -6.3 | 111 24 -22.3 8.6 48 53 20117 355 11 1.0 -11.0 | 108 13 -12.3 3.9 49 50 20422 355 21 1.8 -20.9 | 62 13 -11.5 -6.1 50 50 20450 290 8 7.5 -2.7 | 155 13 -5.8 12.1 51 48 20726 315 10 7.1 -7.1 | 141 10 -6.2 7.8 52 43 21336 285 16 15.5 -4.1 | 191 11 2.2 10.7 53 39 21946 330 20 10.0 -17.3 | 53 4 -3.3 -2.5 54 37 22250 330 13 6.5 -11.3 | 118 8 -6.8 3.6 55 35 22555 270 21 21.0 -0.0 | 207 17 7.7 14.9 56 32 23165 295 19 17.2 -8.0 | 210 8 3.9 6.8 57 30 23470 285 21 20.3 -5.4 | 217 12 7.0 9.4 58 30 23540 310 26 19.9 -16.7 | 286 7 6.6 -1.9 59 29 23774 300 28 24.2 -14.0 | 266 11 11.0 0.9 60 27 24079 280 16 15.8 -2.8 | 192 12 2.5 12.1 61 26 24384 285 20 19.3 -5.2 | 212 11 6.0 9.7 62 24 24994 290 24 22.6 -8.2 | 234 11 9.3 6.7 63 20 26030 275 45 44.8 -3.9 | 251 33 31.5 10.9 64 14 27127 275 54 53.8 -4.7 | 256 42 40.5 10.2 65 12 27432 265 47 46.8 4.1 | 241 39 33.5 19.0 66 11 27737 260 48 47.3 8.3 | 236 41 34.0 23.2 Wind Parameters Mean winds (0-6000m): 288.2 at 26.6 knts Storm direction: 318.2 at 19.9 knts Shear (0-3000m) pos: 4.8 neg: 0.9 tot: 5.7 10-3/s Storm rel Dir Shear (0-3000m): 86.2 deg Storm rel helicity (0-3000m) pos: 127.2 neg: -19.5 tot: 107.7 m^2/s^2 ave: 35.9 10^-3 m/s^2 rel: 0.43 Storm rel vorticity (0-3000m) horiz: 8.7 stream: 3.7 10^-3/s Energy-Hel index: 0.01 Bulk Rich Number: 0.10 Bulk Shear: 116.62 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 ------------------------------------------------------------------------------- 500 188 9 154 27| 9.0 0.0 9.0| 61.9 0.0 61.9 123.8 0.74| 12.3 9.2 1000 220 11 166 24| 8.1 0.0 8.1| 98.6 0.0 98.6 98.6 0.75| 10.5 7.9 1500 236 12 172 22| 4.9 0.0 4.9|101.3 -10.8 90.5 60.3 0.55| 8.5 4.7 2000 247 12 174 20| 4.1 0.0 4.1|101.3 -19.3 81.9 41.0 0.35| 8.2 2.8 2500 260 13 180 17| 5.7 0.0 5.7|126.8 -19.3 107.5 43.0 0.48| 9.3 4.5 3000 268 15 188 16| 4.8 0.9 5.7|127.2 -19.5 107.7 35.9 0.43| 8.7 3.7 4000 275 18 198 14| 3.2 1.4 4.6|140.2 -24.0 116.1 29.0 0.39| 8.1 3.1 5000 282 22 218 13| 4.5 1.1 5.6|225.1 -24.0 201.0 40.2 0.48| 8.5 4.1 6000 288 27 241 14| 3.8 1.4 5.2|236.3 -24.0 212.3 35.4 0.46| 7.7 3.5 Wrote GIF file: /home/apache/climate/data/raob//KIAD/skewt/KIAD.skewt.20251228.12.gif