UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025123100.upa.cvt Date: 0000Z 31 DEC 25 Searching for KIAD... Searching the city database file for: KIAD ... Date:0000Z 31 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 -2.5 -12.5 46 10.0 -5.3 290 7 270.3 270.6 267.6 274.4 1.45 1 1000 118 -2.5 -13.5 43 11.0 -5.5 285 8 270.6 270.9 267.6 274.4 1.35 2 998 134 -2.5 -13.5 43 11.0 -5.5 285 9 270.8 271.0 267.7 274.6 1.35 3 925 730 -8.3 -14.3 62 6.0 -9.8 285 21 270.8 271.0 267.8 274.6 1.36 4 887 1054 -11.5 -15.4 73 3.9 -12.4 285 26 270.8 271.0 267.6 274.4 1.30 5 850 1379 -13.9 -17.5 74 3.6 -14.7 285 34 271.6 271.8 267.9 274.8 1.14 6 839 1478 -14.5 -17.8 76 3.3 -15.2 285 34 272.0 272.2 268.1 275.2 1.12 7 829 1569 -15.1 -19.3 70 4.2 -15.9 289 36 272.3 272.4 268.1 275.1 1.00 8 822 1633 -14.1 -23.1 46 9.0 -15.7 294 39 274.0 274.1 268.7 276.1 0.72 9 817 1679 -12.1 -31.1 19 19.0 -15.0 298 42 276.6 276.6 269.7 277.7 0.35 10 814 1707 -11.9 -39.9 8 28.0 -15.3 300 43 277.1 277.1 269.7 277.6 0.15 11 808 1764 -11.1 -46.1 4 35.0 -14.9 305 46 278.5 278.5 270.4 278.8 0.08 12 793 1908 -11.5 -30.5 19 19.0 -14.6 311 47 279.6 279.7 271.6 280.8 0.38 13 789 1946 -11.7 -31.7 17 20.0 -14.8 312 47 279.8 279.8 271.6 280.9 0.34 14 781 2024 -12.1 -25.1 33 13.0 -14.5 313 45 280.2 280.3 272.3 282.1 0.64 15 769 2143 -11.7 -26.7 28 15.0 -14.5 315 43 281.8 281.9 273.2 283.6 0.56 16 756 2273 -12.3 -24.3 36 12.0 -14.6 315 44 282.6 282.7 273.9 284.7 0.71 17 725 2593 -12.7 -25.7 33 13.0 -15.2 312 50 285.5 285.7 275.4 287.6 0.65 18 709 2763 -12.1 -28.1 25 16.0 -15.0 309 55 288.0 288.1 276.5 289.7 0.53 19 700 2861 -12.5 -28.5 25 16.0 -15.4 305 60 288.6 288.7 276.8 290.3 0.52 20 651 3415 -13.3 -31.3 20 18.0 -16.4 299 56 293.8 293.9 279.2 295.2 0.43 21 632 3641 -12.7 -29.7 23 17.0 -15.9 295 53 297.0 297.1 280.7 298.7 0.52 22 608 3935 -14.5 -23.5 46 9.0 -16.5 295 53 298.2 298.4 281.8 301.2 0.94 23 562 4528 -18.1 -27.1 45 9.0 -19.8 293 56 300.7 300.9 282.7 303.2 0.74 24 557 4595 -18.7 -27.7 45 9.0 -20.4 292 57 300.8 300.9 282.7 303.1 0.70 25 537 4866 -20.7 -29.7 44 9.0 -22.2 290 59 301.6 301.7 282.8 303.6 0.61 26 507 5289 -24.5 -29.5 63 5.0 -25.3 290 66 302.0 302.1 283.1 304.1 0.65 27 500 5390 -25.1 -29.8 65 4.7 -25.8 290 68 302.4 302.6 283.2 304.6 0.65 28 499 5404 -25.1 -29.7 65 4.6 -25.8 290 68 302.6 302.7 283.3 304.8 0.65 29 488 5566 -25.7 -33.7 47 8.0 -26.8 289 70 303.8 303.9 283.5 305.4 0.45 30 477 5730 -26.9 -36.9 38 10.0 -28.0 288 72 304.3 304.4 283.6 305.5 0.34 31 470 5836 -27.5 -36.5 42 9.0 -28.6 287 74 304.9 304.9 283.8 306.1 0.36 32 428 6499 -32.7 -39.7 50 7.0 -33.3 290 76 306.5 306.6 284.4 307.5 0.28 33 420 6631 -33.7 -43.7 36 10.0 -34.5 291 76 306.9 306.9 284.4 307.6 0.19 34 400 6970 -36.9 -44.9 43 8.0 -37.4 295 75 307.0 307.1 284.4 307.7 0.17 35 383 7269 -39.5 -46.5 47 7.0 -39.9 293 75 307.4 307.5 284.5 308.0 0.15 36 376 7395 -40.7 -48.7 42 8.0 -41.1 292 76 307.5 307.5 284.5 307.9 0.12 37 374 7432 -41.1 -47.1 52 6.0 -41.4 292 76 307.4 307.5 284.5 308.0 0.15 38 371 7487 -41.3 -49.3 42 8.0 -41.7 291 76 307.9 307.9 284.7 308.3 0.12 39 369 7523 -41.7 -48.7 47 7.0 -42.1 291 76 307.8 307.8 284.7 308.3 0.12 40 361 7672 -42.1 -52.1 33 10.0 -42.5 290 76 309.2 309.2 285.1 309.5 0.09 41 357 7747 -42.7 -48.7 52 6.0 -43.0 290 77 309.4 309.4 285.2 309.9 0.13 42 356 7766 -42.5 -51.5 37 9.0 -42.9 290 77 309.9 309.9 285.4 310.3 0.09 43 353 7823 -42.9 -49.9 46 7.0 -43.2 290 77 310.1 310.1 285.5 310.5 0.11 44 347 7939 -44.1 -52.1 41 8.0 -44.4 290 78 310.0 310.0 285.4 310.4 0.09 45 345 7978 -44.3 -55.3 28 11.0 -44.7 290 78 310.3 310.3 285.5 310.5 0.06 46 342 8036 -44.9 -52.9 40 8.0 -45.2 290 79 310.2 310.2 285.5 310.5 0.08 47 334 8194 -46.3 -54.3 40 8.0 -46.6 290 80 310.4 310.4 285.5 310.7 0.07 48 326 8355 -47.7 -54.7 44 7.0 -47.9 290 81 310.6 310.7 285.7 310.9 0.07 49 316 8561 -48.9 -57.9 34 9.0 -49.1 290 83 311.8 311.8 286.0 311.9 0.05 50 303 8835 -51.3 -58.3 43 7.0 -51.5 290 85 312.2 312.2 286.2 312.3 0.05 51 302 8857 -51.5 -59.5 38 8.0 -51.7 290 85 312.2 312.2 286.1 312.3 0.04 52 300 8900 -51.5 -63.5 23 12.0 -51.7 290 85 312.8 312.8 286.4 312.9 0.02 53 299 8922 -51.5 -64.5 20 13.0 -51.7 290 85 313.1 313.1 286.4 313.1 0.02 54 294 9031 -51.9 -62.9 26 11.0 -52.1 293 86 314.0 314.0 286.8 314.1 0.03 55 291 9097 -52.3 -68.3 13 16.0 -52.5 294 86 314.4 314.4 286.9 314.4 0.01 56 271 9554 -54.3 -70.3 12 16.0 -54.5 286 79 317.9 317.9 288.1 318.0 0.01 57 250 10070 -54.1 -74.1 7 20.0 -54.4 275 71 325.6 325.6 290.5 325.7 0.01 58 225 10743 -56.9 -74.9 9 18.0 -57.1 270 74 331.3 331.3 292.1 331.3 0.01 59 200 11490 -56.9 -78.9 5 22.0 -57.1 275 82 342.7 342.7 295.0 342.7 0.00 60 170 12523 -56.4 -81.8 3 25.4 -56.7 265 87 359.7 359.7 298.7 359.7 0.00 61 150 13320 -56.1 -84.1 2 28.0 -56.4 255 79 373.4 373.4 301.2 373.4 0.00 62 100 15860 -61.9 -86.9 2 25.0 -62.1 250 76 408.1 408.1 306.3 408.1 0.00 63 97 16048 -62.7 -86.7 3 24.0 -62.9 250 76 410.1 410.1 306.5 410.1 0.00 64 89 16581 -61.3 -87.3 2 26.0 -61.6 255 85 423.2 423.2 308.1 423.2 0.00 65 87 16724 -57.9 -85.9 2 28.0 -58.3 255 79 432.8 432.8 309.1 432.8 0.00 66 82 17094 -61.1 -87.1 2 26.0 -61.4 251 81 433.6 433.6 309.2 433.6 0.00 67 80 17249 -59.1 -87.1 1 28.0 -59.5 250 82 440.8 440.8 310.0 440.8 0.00 68 74 17735 -61.7 -87.7 2 26.0 -62.0 246 85 445.3 445.3 310.4 445.3 0.00 69 70 18080 -61.1 -88.1 2 27.0 -61.4 250 76 453.7 453.7 311.2 453.7 0.00 70 67 18352 -62.1 -88.1 2 26.0 -62.4 245 77 457.2 457.2 311.5 457.2 0.00 71 59 19143 -60.7 -88.7 1 28.0 -61.2 245 66 477.3 477.3 313.2 477.3 0.00 72 56 19467 -62.1 -89.1 2 27.0 -62.5 245 61 481.3 481.3 313.5 481.3 0.00 73 50 20170 -61.9 -88.9 2 27.0 -62.4 245 51 497.6 497.6 314.8 497.6 0.00 74 49 20295 -61.1 -89.1 1 28.0 -61.6 245 51 502.4 502.4 315.1 502.4 0.00 75 45 20820 -63.7 -89.7 2 26.0 -64.1 245 61 508.5 508.5 315.5 508.5 0.00 76 43 21100 -61.5 -89.5 1 28.0 -62.0 245 68 520.5 520.5 316.4 520.5 0.00 77 40 21546 -63.3 -90.3 1 27.0 -63.8 252 70 526.9 526.9 316.7 526.9 0.00 78 38 21863 -60.3 -89.3 1 29.0 -61.0 244 65 542.3 542.3 317.6 542.3 0.00 79 37 22029 -61.1 -89.1 1 28.0 -61.8 235 62 544.4 544.4 317.8 544.4 0.00 80 34 22557 -58.3 -88.3 1 30.0 -59.3 229 60 565.1 565.1 318.9 565.1 0.00 81 30 23340 -60.5 -89.5 1 29.0 -61.4 240 61 579.7 579.7 319.6 579.7 0.00 82 29 23550 -59.5 -89.5 1 30.0 -60.5 238 61 588.1 588.1 320.0 588.1 0.00 83 27 23992 -61.9 -89.9 1 28.0 -62.7 249 57 593.5 593.5 320.3 593.5 0.00 84 26 24225 -60.3 -89.3 1 29.0 -61.3 253 54 604.5 604.5 320.8 604.5 0.01 85 24 24719 -62.7 -89.7 1 27.0 -63.5 236 56 611.5 611.5 321.1 611.5 0.01 86 23 24980 -61.7 -90.7 1 29.0 -62.7 226 60 621.9 621.9 321.6 622.0 0.00 87 20 25840 -62.5 -91.5 1 29.0 -63.5 225 76 644.9 644.9 322.5 644.9 0.00 88 18 26494 -59.7 -89.7 1 30.0 -61.2 230 84 673.4 673.4 323.6 673.5 0.01 89 16 27232 -58.7 -89.7 1 31.0 -60.5 234 96 699.8 699.8 324.4 699.8 0.01 90 15 27640 -55.5 -88.5 1 33.0 -58.1 237 103 723.4 723.4 325.1 723.5 0.01 91 13 28551 -56.1 -88.1 1 32.0 -58.9 242 111 751.6 751.6 326.0 751.7 0.01 92 13 28551 -54.3 -87.3 1 33.0 -57.6 242 111 757.8 757.8 326.1 757.9 0.01 93 12 29064 -53.9 -86.9 1 33.0 -57.5 245 113 776.8 776.8 326.7 776.9 0.02 94 11 29624 -52.3 -86.3 1 34.0 -56.6 247 115 802.2 802.2 327.3 802.3 0.02 95 11 29624 -52.1 -86.1 1 34.0 -56.5 247 115 802.9 802.9 327.3 803.1 0.02 96 10 30240 -53.1 -86.1 1 33.0 -57.4 250 117 821.3 821.3 327.8 821.5 0.02 97 9.8 30370 -53.7 -86.7 1 33.0 -57.9 823.8 823.9 327.8 824.0 0.02 98 9.1 30847 -53.3 -86.3 1 33.0 -57.8 843.0 843.0 328.2 843.3 0.03 99 8.6 31213 -51.1 -85.1 1 34.0 -56.6 865.3 865.4 328.7 865.6 0.03 100 8.0 31682 -52.3 -86.3 1 34.0 -57.6 878.6 878.7 329.0 878.9 0.03 101 7.6 32017 -47.1 -84.1 1 37.0 -54.9 912.6 912.6 329.7 913.1 0.04 102 7.4 32194 -47.9 -83.9 1 36.0 -55.4 916.4 916.4 329.7 916.8 0.05 103 7.3 32284 -45.9 -82.9 1 37.0 -54.5 928.1 928.1 329.9 928.7 0.06 TRP 225 10743 -56.9 -74.9 9 18.0 -57.1 270 74 331.3 331.3 292.1 331.3 0.01 WND 170 12523 -56.4 -81.8 3 25.4 -56.7 265 87 359.7 359.7 298.7 359.7 0.00 Sounding variables and indices 1000-500 mb thick: 5272.00 m Freezing level: Surface below freezing Wetbulb zero: Below ground Precipitable water: 0.19 inches Sfc-500 mean rel hum: 43.10 % Est. max temperature: -1.34 C = 29.58 F Sfc-Lift cond lev (LCL): 857.35 mb = 1313.24 m = 4308.49 ft T: -13.41 C 700-500 lapse rate: 4.98 C/km ThetaE index: 0.22 C Layer 887.0- 850.0 mb Conv cond level (CCL): 535.83 mb = 4882.52 m = 16018.58 ft Mean mixing ratio: 1.36 g/kg Conv temperature: 28.79 C = 83.82 F Cap Strength: 22.99 C Lifted Index: 23.10 C Risk: None Lifted Index @300 mb: 27.05 C Lifted Index @700 mb: 14.32 C Showalter Index: 22.93 C Risk: None Total Totals Index: 18.80 C Risk: None Vertical Totals Index: 11.20 C Cross Totals Index: 7.60 C K Index: -22.30 Risk: None Sweat Index: 136.00 Risk: None Energy Index: 6.38 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 0.26 J/kg Max Up Vert Vel: 0.72 m/s Conv Inhibition (B-): 75702.27 J/kg Cap Strength: 22.94 C Lift Cond Lev (LCL): 839.42 mb = 1473.95 m = 4835.74 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 326 at 37 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 98 290 7 6.6 -2.4 | 153 31 -14.0 27.9 1 1000 118 285 8 7.7 -2.1 | 155 31 -12.9 28.3 2 976 305 290 17 16.0 -5.8 | 169 25 -4.6 24.5 3 939 610 285 20 19.3 -5.2 | 177 25 -1.3 25.2 4 925 730 285 21 20.3 -5.4 | 179 25 -0.3 24.9 5 903 914 280 21 20.7 -3.6 | 180 27 0.1 26.7 6 868 1219 290 32 30.1 -10.9 | 206 22 9.4 19.4 7 850 1379 285 34 32.8 -8.8 | 210 25 12.2 21.5 8 834 1524 285 34 32.8 -8.8 | 210 25 12.2 21.5 9 801 1829 310 49 37.5 -31.5 | 274 17 16.9 -1.2 10 770 2134 315 43 30.4 -30.4 | 270 10 9.8 -0.1 11 740 2438 315 45 31.8 -31.8 | 278 11 11.2 -1.5 12 711 2743 310 54 41.4 -34.7 | 282 21 20.7 -4.4 13 700 2861 305 60 49.1 -34.4 | 278 29 28.5 -4.1 14 683 3048 305 61 50.0 -35.0 | 279 30 29.3 -4.6 15 630 3658 295 53 48.0 -22.4 | 254 29 27.4 7.9 16 581 4267 295 54 48.9 -22.8 | 255 29 28.3 7.5 17 535 4877 290 59 55.4 -20.2 | 254 36 34.8 10.2 18 500 5390 290 68 63.9 -23.3 | 261 44 43.3 7.1 19 453 6096 285 77 74.4 -19.9 | 259 55 53.8 10.4 20 400 6970 295 75 68.0 -31.7 | 272 47 47.3 -1.4 21 363 7620 290 76 71.4 -26.0 | 265 51 50.8 4.3 22 300 8900 290 85 79.9 -29.1 | 269 59 59.2 1.3 23 289 9144 295 86 77.9 -36.3 | 276 58 57.3 -6.0 24 250 10070 275 71 70.7 -6.2 | 244 56 50.1 24.2 25 239 10363 270 73 73.0 -0.0 | 240 61 52.4 30.3 26 225 10743 270 74 74.0 -0.0 | 240 61 53.4 30.3 27 207 11278 265 84 83.7 7.3 | 239 73 63.1 37.7 28 200 11490 275 82 81.7 -7.1 | 249 65 61.1 23.2 29 197 11582 275 84 83.7 -7.3 | 250 67 63.1 23.0 30 170 12523 265 87 86.7 7.6 | 240 76 66.0 37.9 31 163 12802 265 87 86.7 7.6 | 240 76 66.0 37.9 32 155 13106 255 75 72.4 19.4 | 226 72 51.8 49.8 33 150 13320 255 79 76.3 20.4 | 228 75 55.7 50.8 34 128 14326 265 87 86.7 7.6 | 240 76 66.0 37.9 35 110 15240 260 74 72.9 12.8 | 230 68 52.3 43.2 36 100 15850 260 66 65.0 11.5 | 227 61 44.4 41.8 37 100 15860 250 76 71.4 26.0 | 222 76 50.8 56.3 38 95 16154 250 76 71.4 26.0 | 222 76 50.8 56.3 39 91 16459 255 90 86.9 23.3 | 231 85 66.3 53.6 40 86 16764 255 77 74.4 19.9 | 227 74 53.8 50.3 41 75 17678 245 87 78.8 36.8 | 221 89 58.2 67.1 42 70 18080 250 76 71.4 26.0 | 222 76 50.8 56.3 43 68 18288 245 78 70.7 33.0 | 218 81 50.1 63.3 44 50 20170 245 51 46.2 21.6 | 206 58 25.6 51.9 45 48 20422 245 51 46.2 21.6 | 206 58 25.6 51.9 46 41 21336 245 74 67.1 31.3 | 217 77 46.4 61.6 47 39 21641 255 69 66.6 17.9 | 224 67 46.0 48.2 48 36 22250 225 59 41.7 41.7 | 196 75 21.1 72.1 49 30 23340 240 61 52.8 30.5 | 208 69 32.2 60.8 50 28 23774 235 60 49.1 34.4 | 204 71 28.5 64.8 51 27 24079 255 56 54.1 14.5 | 217 56 33.5 44.8 52 25 24384 250 52 48.9 17.8 | 210 56 28.2 48.1 53 23 24994 225 60 42.4 42.4 | 197 76 21.8 72.8 54 22 25298 235 78 63.9 44.7 | 210 87 43.3 75.1 55 20 25840 225 76 53.7 53.7 | 201 90 33.1 84.1 56 20 25908 235 61 50.0 35.0 | 204 72 29.3 65.3 57 19 26213 225 75 53.0 53.0 | 201 89 32.4 83.4 58 18 26518 230 84 64.3 54.0 | 207 95 43.7 84.3 59 16 27432 235 99 81.1 56.8 | 215 106 60.5 87.1 60 14 28042 240 109 94.4 54.5 | 221 112 73.8 84.8 61 10 30240 250 117 109.9 40.0 | 232 114 89.3 70.4 Wind Parameters Mean winds (0-6000m): 295.8 at 48.9 knts Storm direction: 325.8 at 36.7 knts Shear (0-3000m) pos: 4.8 neg: 5.5 tot: 10.3 10-3/s Storm rel Dir Shear (0-3000m): 123.6 deg Storm rel helicity (0-3000m) pos: 288.7 neg: -19.0 tot: 269.7 m^2/s^2 ave: 89.9 10^-3 m/s^2 rel: 0.57 Storm rel vorticity (0-3000m) horiz: 13.9 stream: 7.9 10^-3/s Energy-Hel index: 0.00 Bulk Rich Number: 0.00 Bulk Shear: 148.87 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 ------------------------------------------------------------------------------- 500 288 16 167 26| 0.0 13.3 13.3| 80.0 0.0 80.0 159.9 0.83| 13.7 11.4 1000 285 19 174 26| 4.0 6.6 10.6|131.7 0.0 131.7 131.7 0.83| 11.8 9.7 1500 286 24 185 24| 6.2 4.4 10.6|195.6 0.0 195.6 130.4 0.82| 12.3 10.1 2000 295 29 197 19| 7.2 3.3 10.5|279.5 -1.7 277.8 138.9 0.78| 15.3 11.9 2500 300 32 207 16| 5.8 3.9 9.7|285.8 -1.7 284.1 113.6 0.72| 13.7 9.9 3000 302 36 223 15| 4.8 5.5 10.3|288.7 -19.0 269.7 89.9 0.57| 13.9 7.9 4000 301 41 238 17| 3.6 3.9 7.5|291.9-107.4 184.5 46.1 0.38| 12.0 4.5 5000 298 44 243 21| 2.9 4.2 7.1|313.7-113.0 200.7 40.1 0.35| 10.7 3.8 6000 296 49 249 25| 2.4 4.8 7.2|342.7-131.7 211.0 35.2 0.31| 10.3 3.2 Wrote GIF file: /home/apache/climate/data/raob//KIAD/skewt/KIAD.skewt.20251231.00.gif