UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025122300.upa.cvt Date: 0000Z 23 DEC 25 Searching for KIAD... Searching the city database file for: KIAD ... Date:0000Z 23 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 1021 98 3.6 -7.4 44 11.0 -0.3 140 6 275.1 275.5 271.8 281.1 2.14 1 1016 136 5.2 -9.8 33 15.0 0.1 147 7 277.1 277.4 272.4 282.2 1.78 2 1005 222 5.8 -9.2 33 15.0 0.5 163 10 278.6 278.9 273.4 284.0 1.89 3 1000 261 5.6 -9.4 33 15.0 0.4 170 11 278.8 279.1 273.5 284.1 1.87 4 941 755 1.8 -10.2 41 12.0 -2.2 213 15 279.8 280.1 274.1 285.1 1.87 5 925 893 1.6 -13.4 32 15.0 -3.1 225 17 280.9 281.2 274.1 285.2 1.47 6 921 928 1.6 -13.4 32 15.0 -3.1 225 17 281.3 281.5 274.3 285.6 1.47 7 880 1292 -0.9 -17.9 26 17.0 -5.5 229 15 282.4 282.6 274.3 285.6 1.06 8 858 1494 -2.3 -17.3 31 15.0 -6.4 241 15 283.0 283.2 274.8 286.4 1.15 9 852 1549 -2.7 -20.7 24 18.0 -7.2 244 15 283.1 283.3 274.4 285.7 0.86 10 850 1568 -2.5 -21.5 22 19.0 -7.2 245 15 283.5 283.7 274.5 286.0 0.81 11 827 1785 -2.9 -25.9 15 23.0 -8.0 270 16 285.3 285.4 275.1 287.1 0.56 12 819 1862 -2.5 -32.5 8 30.0 -8.3 275 17 286.6 286.6 275.4 287.5 0.30 13 806 1989 -2.1 -26.1 14 24.0 -7.6 275 19 288.3 288.4 276.7 290.1 0.56 14 798 2069 -2.3 -16.3 33 14.0 -6.4 275 21 288.9 289.1 278.1 293.0 1.34 15 780 2249 -3.7 -11.7 54 8.0 -6.4 279 23 289.3 289.6 279.2 295.2 2.00 16 774 2310 -4.1 -11.1 58 7.0 -6.5 281 24 289.5 289.9 279.4 295.8 2.11 17 771 2341 -4.1 -11.1 58 7.0 -6.5 282 25 289.8 290.2 279.6 296.1 2.12 18 768 2372 -4.1 -8.2 73 4.1 -5.6 283 25 290.1 290.6 280.5 298.1 2.68 19 757 2485 -4.3 -7.0 81 2.7 -5.3 284 27 291.1 291.7 281.3 299.9 2.98 20 755 2506 -4.3 -7.3 80 3.0 -5.4 283 27 291.4 291.9 281.3 300.0 2.92 21 748 2579 -4.7 -7.9 78 3.2 -5.9 280 29 291.7 292.2 281.3 300.0 2.82 22 735 2717 -5.3 -6.5 91 1.2 -5.8 276 31 292.5 293.1 282.1 301.9 3.20 23 724 2835 -5.7 -8.4 81 2.7 -6.7 281 34 293.3 293.8 282.0 301.7 2.80 24 709 2999 -6.5 -8.3 87 1.8 -7.2 293 37 294.2 294.7 282.5 302.8 2.88 25 700 3099 -6.9 -9.2 84 2.3 -7.7 300 39 294.8 295.3 282.6 303.0 2.72 26 662 3534 -9.1 -12.2 78 3.1 -10.1 302 40 297.1 297.5 283.0 304.0 2.26 27 634 3868 -10.5 -13.1 81 2.6 -11.3 302 45 299.2 299.6 283.8 306.0 2.20 28 585 4483 -14.7 -15.4 94 0.7 -14.9 305 58 301.3 301.6 284.4 307.4 1.97 29 577 4588 -14.7 -15.2 96 0.5 -14.9 305 62 302.5 302.8 284.9 308.8 2.03 30 573 4641 -14.7 -15.5 94 0.8 -14.9 305 63 303.1 303.4 285.1 309.4 2.00 31 562 4788 -14.5 -17.4 79 2.9 -15.3 305 68 305.0 305.3 285.5 310.5 1.74 32 558 4842 -14.5 -18.0 75 3.5 -15.5 305 70 305.6 305.9 285.7 310.9 1.66 33 552 4924 -15.1 -18.6 75 3.5 -16.1 305 72 305.9 306.1 285.7 311.0 1.60 34 539 5105 -15.7 -17.7 85 2.0 -16.3 305 78 307.2 307.6 286.4 312.9 1.76 35 537 5133 -15.7 -18.7 78 3.0 -16.5 305 79 307.6 307.9 286.3 312.8 1.63 36 527 5274 -16.7 -19.2 81 2.5 -17.4 304 79 308.0 308.3 286.5 313.2 1.59 37 513 5477 -17.1 -21.7 67 4.6 -18.3 302 76 309.9 310.2 286.8 314.2 1.31 38 509 5536 -17.1 -21.1 71 4.0 -18.1 301 75 310.6 310.9 287.2 315.2 1.39 39 507 5565 -17.1 -22.1 65 5.0 -18.3 301 74 311.0 311.2 287.2 315.2 1.28 40 505 5595 -16.7 -21.7 65 5.0 -18.0 301 73 311.8 312.0 287.5 316.2 1.33 41 500 5670 -17.3 -22.3 65 5.0 -18.6 300 72 311.9 312.2 287.5 316.2 1.28 42 491 5805 -18.5 -21.9 75 3.4 -19.3 300 72 312.1 312.4 287.6 316.6 1.35 43 488 5851 -18.9 -23.7 66 4.8 -20.0 300 73 312.2 312.4 287.4 316.0 1.16 44 483 5927 -19.3 -22.7 74 3.4 -20.1 300 75 312.6 312.8 287.7 316.9 1.28 45 479 5989 -19.5 -23.9 68 4.4 -20.5 300 76 313.1 313.3 287.8 317.0 1.16 46 476 6036 -19.7 -26.7 54 7.0 -21.2 300 77 313.4 313.6 287.6 316.5 0.90 47 473 6082 -20.1 -25.1 64 5.0 -21.2 300 78 313.5 313.7 287.8 317.0 1.05 48 469 6145 -20.3 -28.3 49 8.0 -21.9 300 78 314.0 314.1 287.6 316.7 0.79 49 464 6224 -20.9 -27.9 53 7.0 -22.3 300 79 314.2 314.4 287.8 317.1 0.83 50 458 6320 -21.5 -30.5 44 9.0 -23.1 300 79 314.6 314.7 287.7 316.9 0.66 51 449 6466 -22.7 -31.7 44 9.0 -24.2 300 80 314.9 315.0 287.8 317.0 0.60 52 443 6564 -23.5 -31.5 48 8.0 -24.9 300 81 315.1 315.2 287.8 317.3 0.62 53 438 6647 -24.1 -35.1 36 11.0 -25.7 300 82 315.4 315.5 287.8 316.9 0.44 54 429 6797 -25.3 -37.3 32 12.0 -26.9 300 83 315.7 315.8 287.8 317.0 0.36 55 400 7300 -29.5 -40.5 34 11.0 -30.7 305 81 316.6 316.7 288.0 317.7 0.28 56 300 9280 -45.5 -58.5 22 13.0 -45.9 300 90 321.2 321.2 289.2 321.4 0.05 57 250 10460 -56.1 -62.1 47 6.0 -56.2 295 94 322.7 322.7 289.6 322.8 0.04 58 236 10825 -58.7 -65.7 40 7.0 -58.8 300 100 324.1 324.1 290.0 324.2 0.02 59 220 11267 -57.9 -70.5 19 12.5 -58.1 305 108 331.8 331.8 292.2 331.9 0.01 60 200 11870 -56.9 -76.9 6 20.0 -57.1 305 97 342.7 342.7 295.0 342.7 0.01 61 150 13690 -58.7 -83.7 3 25.0 -58.9 300 90 368.9 368.9 300.4 369.0 0.00 62 100 16210 -62.1 -88.1 2 26.0 -62.3 305 71 407.7 407.7 306.2 407.7 0.00 63 72 18220 -66.7 -87.7 4 21.0 -66.9 324 59 438.1 438.1 309.7 438.2 0.00 64 70 18390 -67.9 -87.9 4 20.0 -68.1 315 40 439.1 439.1 309.8 439.1 0.00 65 67 18652 -69.3 -89.3 4 20.0 -69.4 309 41 441.6 441.6 310.0 441.6 0.00 66 63 19020 -67.9 -88.9 3 21.0 -68.1 303 45 452.6 452.6 311.1 452.6 0.00 67 60 19313 -68.1 -90.1 3 22.0 -68.2 298 49 458.5 458.5 311.6 458.5 0.00 68 60 19313 -66.1 -89.1 3 23.0 -66.3 298 49 462.9 462.9 312.0 463.0 0.00 69 57 19624 -64.9 -88.9 2 24.0 -65.2 298 49 472.5 472.5 312.8 472.5 0.00 70 55 19841 -66.1 -89.1 3 23.0 -66.4 303 44 474.6 474.6 313.0 474.6 0.00 71 51 20300 -65.1 -89.1 2 24.0 -65.4 295 36 487.3 487.3 314.0 487.3 0.00 72 50 20420 -65.9 -89.9 2 24.0 -66.2 285 34 488.2 488.2 314.1 488.2 0.00 73 47 20794 -67.9 -89.9 3 22.0 -68.1 282 32 492.1 492.1 314.4 492.1 0.00 74 43 21333 -64.9 -89.9 2 25.0 -65.3 290 34 512.2 512.2 315.8 512.2 0.00 75 41 21622 -67.1 -90.1 2 23.0 -67.4 300 30 513.7 513.7 315.9 513.7 0.00 76 40 21772 -65.1 -90.1 2 25.0 -65.5 289 30 522.4 522.4 316.5 522.4 0.00 77 38 22084 -66.5 -90.5 2 24.0 -66.8 280 32 526.5 526.5 316.7 526.5 0.00 78 37 22246 -64.5 -90.5 2 26.0 -65.0 285 35 535.7 535.7 317.3 535.7 0.00 79 31 23328 -64.3 -90.3 2 26.0 -64.8 289 28 564.0 564.0 318.9 564.1 0.00 80 31 23328 -62.7 -89.7 1 27.0 -63.3 289 28 568.4 568.4 319.0 568.4 0.00 81 30 23530 -63.1 -90.1 1 27.0 -63.7 250 17 572.6 572.6 319.3 572.6 0.00 82 28 23952 -64.5 -90.5 2 26.0 -65.1 242 18 580.1 580.1 319.7 580.2 0.00 83 25 24647 -62.3 -89.3 2 27.0 -63.1 279 35 605.6 605.6 320.9 605.6 0.01 84 25 24647 -62.7 -89.7 1 27.0 -63.5 279 35 604.4 604.4 320.8 604.4 0.00 85 24 24899 -60.7 -89.7 1 29.0 -61.7 269 35 617.3 617.3 321.4 617.4 0.01 86 23 25163 -60.5 -89.5 1 29.0 -61.6 256 34 625.5 625.5 321.7 625.5 0.01 87 22 25439 -61.7 -89.7 1 28.0 -62.7 255 34 629.9 629.9 321.9 629.9 0.01 88 20 26030 -60.3 -89.3 1 29.0 -61.6 250 37 651.6 651.6 322.7 651.6 0.01 89 14 28268 -57.9 -87.9 1 30.0 -60.1 256 44 729.7 729.7 325.4 729.8 0.01 90 13 28734 -60.1 -89.1 1 29.0 -62.0 263 45 737.7 737.7 325.6 737.8 0.01 91 11 29786 -56.5 -87.5 1 31.0 -59.5 279 48 786.9 786.9 326.9 787.0 0.02 92 10 30390 -57.1 -87.1 1 30.0 -60.2 275 50 806.4 806.4 327.4 806.6 0.02 93 9.2 30916 -58.1 -88.1 1 30.0 -61.0 271 56 822.0 822.1 327.8 822.2 0.02 94 8.3 31567 -56.1 -87.1 1 31.0 -59.9 267 63 854.5 854.5 328.5 854.7 0.02 95 7.8 31965 -52.5 -85.5 1 33.0 -57.8 265 67 884.2 884.2 329.1 884.6 0.03 96 7.0 32660 -54.9 -85.9 1 31.0 -59.6 260 75 902.1 902.1 329.5 902.4 0.03 97 6.6 33037 -54.3 -86.3 1 32.0 -59.4 919.9 920.0 329.8 920.3 0.03 98 6.4 33235 -51.7 -84.7 1 33.0 -58.0 939.1 939.1 330.1 939.6 0.05 TRP 236 10825 -58.7 -65.7 40 7.0 -58.8 300 100 324.1 324.1 290.0 324.2 0.02 WND 220 11267 -57.9 -70.5 19 12.5 -58.1 305 108 331.8 331.8 292.2 331.9 0.01 Sounding variables and indices 1000-500 mb thick: 5409.00 m Freezing level: 894.76 mb = 1161.23 m = 3809.75 ft Wetbulb zero: Below ground Precipitable water: 0.42 inches Sfc-500 mean rel hum: 61.68 % Est. max temperature: 11.16 C = 52.09 F Sfc-Lift cond lev (LCL): 860.56 mb = 1470.07 m = 4823.01 ft T: -2.14 C 700-500 lapse rate: 4.05 C/km ThetaE index: 0.66 C Layer 852.0- 850.0 mb Conv cond level (CCL): 491.49 mb = 5797.97 m = 19021.98 ft Mean mixing ratio: 1.82 g/kg Conv temperature: 40.80 C = 105.45 F Cap Strength: 23.15 C Lifted Index: 23.17 C Risk: None Lifted Index @300 mb: 26.14 C Lifted Index @700 mb: 12.53 C Showalter Index: 22.00 C Risk: None Total Totals Index: 10.60 C Risk: None Vertical Totals Index: 14.80 C Cross Totals Index: -4.20 C K Index: -9.00 Risk: None Sweat Index: 229.39 Risk: None Energy Index: 6.30 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 9.08 J/kg Max Up Vert Vel: 4.26 m/s Conv Inhibition (B-): 63670.30 J/kg Cap Strength: 23.16 C Lift Cond Lev (LCL): 782.85 mb = 2220.38 m = 7284.64 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 325 at 30 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 1021 98 140 6 -3.9 4.6 | 144 36 -21.4 29.3 1 1000 261 170 11 -1.9 10.8 | 151 40 -19.5 35.5 2 995 305 180 11 0.0 11.0 | 154 40 -17.6 35.7 3 958 610 200 13 4.4 12.2 | 160 39 -13.1 36.9 4 925 893 225 17 12.0 12.0 | 171 37 -5.6 36.7 5 923 914 225 17 12.0 12.0 | 171 37 -5.6 36.7 6 888 1219 225 15 10.6 10.6 | 169 36 -7.0 35.3 7 850 1568 245 15 13.6 6.3 | 173 31 -4.0 31.0 8 822 1829 275 16 15.9 -1.4 | 176 23 -1.6 23.3 9 791 2134 275 22 21.9 -1.9 | 191 23 4.3 22.7 10 761 2438 285 26 25.1 -6.7 | 203 19 7.5 17.9 11 732 2743 275 32 31.9 -2.8 | 213 26 14.3 21.9 12 700 3099 300 39 33.8 -19.5 | 252 17 16.2 5.2 13 677 3353 305 39 31.9 -22.4 | 261 15 14.4 2.3 14 651 3658 300 41 35.5 -20.5 | 257 18 17.9 4.2 15 601 4267 305 52 42.6 -29.8 | 282 26 25.0 -5.2 16 555 4877 305 71 58.2 -40.7 | 292 44 40.6 -16.1 17 533 5182 305 81 66.4 -46.5 | 294 53 48.8 -21.8 18 500 5670 300 72 62.4 -36.0 | 284 46 44.8 -11.3 19 492 5791 300 72 62.4 -36.0 | 284 46 44.8 -11.3 20 472 6096 300 78 67.5 -39.0 | 286 52 50.0 -14.3 21 416 7010 300 84 72.7 -42.0 | 287 58 55.2 -17.3 22 400 7300 305 81 66.4 -46.5 | 294 53 48.8 -21.8 23 382 7620 310 78 59.8 -50.1 | 301 49 42.2 -25.5 24 349 8230 310 75 57.5 -48.2 | 301 46 39.9 -23.5 25 306 9144 300 91 78.8 -45.5 | 289 65 61.2 -20.8 26 300 9280 300 90 77.9 -45.0 | 289 64 60.4 -20.3 27 250 10460 295 94 85.2 -39.7 | 283 69 67.6 -15.1 28 236 10825 300 100 86.6 -50.0 | 290 74 69.0 -25.3 29 220 11267 305 108 88.5 -61.9 | 298 80 70.9 -37.3 30 209 11582 305 108 88.5 -61.9 | 298 80 70.9 -37.3 31 200 11870 305 97 79.5 -55.6 | 297 69 61.9 -31.0 32 164 13106 300 85 73.6 -42.5 | 288 59 56.0 -17.8 33 150 13690 300 90 77.9 -45.0 | 289 64 60.4 -20.3 34 129 14630 300 94 81.4 -47.0 | 289 68 63.8 -22.3 35 117 15240 305 74 60.6 -42.4 | 292 47 43.0 -17.8 36 106 15850 300 90 77.9 -45.0 | 289 64 60.4 -20.3 37 100 16210 305 71 58.2 -40.7 | 292 44 40.6 -16.1 38 96 16459 305 71 58.2 -40.7 | 292 44 40.6 -16.1 39 91 16764 310 83 63.6 -53.4 | 302 54 46.0 -28.7 40 79 17678 310 73 55.9 -46.9 | 300 44 38.3 -22.3 41 75 17983 320 71 45.6 -54.4 | 317 41 28.1 -29.7 42 71 18288 325 55 31.5 -45.1 | 326 25 14.0 -20.4 43 70 18390 315 40 28.3 -28.3 | 289 11 10.7 -3.6 44 68 18593 310 40 30.6 -25.7 | 275 13 13.1 -1.0 45 58 19507 295 51 46.2 -21.6 | 264 29 28.6 3.1 46 53 20117 310 39 29.9 -25.1 | 272 12 12.3 -0.4 47 50 20420 285 34 32.8 -8.8 | 224 22 15.3 15.9 48 45 21031 280 31 30.5 -5.4 | 214 23 13.0 19.3 49 43 21336 290 34 31.9 -11.6 | 228 19 14.4 13.0 50 41 21641 300 30 26.0 -15.0 | 221 13 8.4 9.7 51 39 21946 275 30 29.9 -2.6 | 209 25 12.3 22.1 52 37 22250 285 35 33.8 -9.1 | 226 23 16.2 15.6 53 35 22555 300 33 28.6 -16.5 | 233 14 11.0 8.2 54 32 23165 300 23 19.9 -11.5 | 190 13 2.3 13.2 55 30 23470 280 32 31.5 -5.6 | 216 24 13.9 19.1 56 30 23530 250 17 16.0 5.8 | 177 31 -1.6 30.5 57 27 24079 240 18 15.6 9.0 | 177 34 -2.0 33.7 58 26 24384 275 30 29.9 -2.6 | 209 25 12.3 22.1 59 25 24689 280 36 35.5 -6.3 | 224 26 17.9 18.4 60 23 25298 250 34 31.9 11.6 | 202 39 14.4 36.3 61 20 25908 270 36 36.0 -0.0 | 217 31 18.4 24.7 62 20 26030 250 37 34.8 12.7 | 205 41 17.2 37.3 63 19 26213 245 33 29.9 13.9 | 198 41 12.3 38.6 64 18 26822 260 32 31.5 5.6 | 205 33 13.9 30.2 65 17 27127 270 37 37.0 -0.0 | 218 31 19.4 24.7 66 16 27432 270 39 39.0 -0.0 | 221 33 21.4 24.7 67 14 28346 255 44 42.5 11.4 | 215 44 24.9 36.1 68 11 29566 280 47 46.3 -8.2 | 240 33 28.7 16.5 69 10 30390 275 50 49.8 -4.4 | 238 38 32.2 20.3 70 7 32660 260 75 73.9 13.0 | 236 68 56.3 37.7 Wind Parameters Mean winds (0-6000m): 294.5 at 40.4 knts Storm direction: 324.5 at 30.3 knts Shear (0-3000m) pos: 7.7 neg: 0.0 tot: 7.7 10-3/s Storm rel Dir Shear (0-3000m): 108.4 deg Storm rel helicity (0-3000m) pos: 388.8 neg: -14.7 tot: 374.1 m^2/s^2 ave: 124.7 10^-3 m/s^2 rel: 0.71 Storm rel vorticity (0-3000m) horiz: 12.0 stream: 8.5 10^-3/s Energy-Hel index: 0.01 Bulk Rich Number: 0.03 Bulk Shear: 276.58 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 ------------------------------------------------------------------------------- 500 181 11 154 39| 11.4 0.0 11.4|115.5 0.0 115.5 231.1 0.89| 12.9 11.5 1000 204 13 161 39| 8.4 0.0 8.4|191.9 -9.5 182.4 182.4 0.82| 11.1 9.1 1500 215 14 165 37| 6.2 0.0 6.2|214.3 -14.7 199.6 133.0 0.69| 9.8 6.8 2000 231 15 170 34| 6.7 0.0 6.7|256.4 -14.7 241.7 120.9 0.65| 10.4 6.8 2500 247 17 176 31| 7.0 0.0 7.0|299.4 -14.7 284.7 113.9 0.67| 10.3 7.0 3000 260 20 184 28| 7.7 0.0 7.7|388.8 -14.7 374.1 124.7 0.71| 12.0 8.5 4000 280 25 200 22| 7.0 0.0 7.0|434.4 -18.0 416.4 104.1 0.68| 10.9 7.4 5000 291 33 226 19| 7.0 1.6 8.6|520.5 -18.0 502.5 100.5 0.59| 11.7 6.9 6000 295 40 248 21| 5.8 1.4 7.3|543.9-126.6 417.3 69.6 0.46| 11.4 5.2 Wrote GIF file: /home/apache/climate/data/raob//KIAD/skewt/KIAD.skewt.20251223.00.gif