UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025120800.upa.cvt Date: 0000Z 8 DEC 25 Searching for KIAD... Searching the city database file for: KIAD ... Date:0000Z 8 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 1008 98 3.2 -0.6 76 3.8 1.6 165 6 275.7 276.3 274.3 285.6 3.63 1 1004 126 3.8 -0.8 72 4.6 1.9 172 6 276.6 277.2 274.8 286.5 3.59 2 1000 155 3.6 -0.9 72 4.5 1.7 180 7 276.8 277.4 274.9 286.6 3.58 3 958 502 1.0 -1.1 86 2.1 0.1 216 10 277.5 278.2 275.5 287.7 3.68 4 949 578 0.8 -2.1 81 2.9 -0.4 226 9 278.1 278.7 275.5 287.6 3.45 5 940 654 1.8 -3.2 69 5.0 -0.2 234 10 279.9 280.4 276.0 288.8 3.21 6 925 784 0.6 -3.3 75 3.9 -0.9 245 11 279.9 280.5 276.1 289.0 3.23 7 923 801 0.6 -3.1 76 3.7 -0.9 248 11 280.1 280.7 276.3 289.3 3.29 8 910 915 1.0 -3.9 70 4.9 -0.9 265 14 281.6 282.2 276.9 290.5 3.14 9 877 1212 0.0 -7.0 59 7.0 -2.6 284 23 283.6 284.0 277.2 291.0 2.57 10 871 1267 0.4 -6.6 59 7.0 -2.3 287 24 284.6 285.0 277.8 292.3 2.67 11 862 1350 0.4 -6.6 59 7.0 -2.3 290 25 285.4 285.9 278.3 293.2 2.70 12 850 1462 -0.5 -5.5 69 5.0 -2.4 295 27 285.6 286.1 278.7 294.2 2.98 13 793 2012 -5.5 -7.1 88 1.6 -6.1 289 24 286.0 286.5 278.7 294.2 2.83 14 791 2031 -5.3 -7.5 84 2.2 -6.1 288 23 286.4 286.9 278.8 294.4 2.75 15 787 2071 -3.7 -8.7 68 5.0 -5.5 287 23 288.6 289.0 279.5 295.9 2.51 16 783 2112 -3.5 -10.5 58 7.0 -5.9 286 22 289.2 289.6 279.4 295.7 2.19 17 778 2162 -3.7 -10.7 58 7.0 -6.1 285 22 289.5 289.9 279.5 296.0 2.17 18 767 2274 -4.5 -10.5 63 6.0 -6.5 285 23 289.8 290.2 279.8 296.5 2.24 19 764 2305 -4.7 -11.7 58 7.0 -7.0 285 24 289.9 290.3 279.6 296.0 2.04 20 758 2367 -5.1 -12.1 58 7.0 -7.4 285 24 290.2 290.5 279.6 296.1 1.99 21 743 2524 -6.5 -10.1 76 3.6 -7.7 285 26 290.3 290.7 280.2 297.4 2.38 22 730 2662 -7.3 -13.3 62 6.0 -9.2 285 26 290.9 291.2 279.8 296.5 1.88 23 704 2943 -9.5 -12.7 77 3.2 -10.5 289 32 291.5 291.9 280.3 297.6 2.04 24 700 2987 -9.5 -12.3 80 2.8 -10.4 290 33 292.0 292.3 280.6 298.3 2.12 25 674 3279 -10.9 -13.4 82 2.5 -11.6 290 37 293.6 293.9 281.2 299.7 2.02 26 646 3604 -12.5 -16.5 72 4.0 -13.6 286 41 295.3 295.6 281.5 300.4 1.63 27 635 3736 -13.1 -18.1 66 5.0 -14.4 284 43 296.1 296.4 281.6 300.6 1.45 28 595 4228 -16.9 -19.3 82 2.4 -17.5 276 47 297.3 297.5 282.0 301.6 1.39 29 590 4292 -17.1 -21.7 67 4.6 -18.1 275 48 297.8 298.0 281.9 301.4 1.14 30 588 4317 -16.3 -30.3 29 14.0 -18.8 275 48 299.0 299.1 281.6 300.7 0.52 31 587 4330 -16.3 -29.3 32 13.0 -18.7 275 48 299.1 299.2 281.8 301.0 0.58 32 580 4420 -16.7 -35.7 18 19.0 -19.6 274 48 299.7 299.7 281.7 300.8 0.31 33 565 4617 -17.9 -38.9 14 21.0 -20.7 272 49 300.5 300.6 281.9 301.3 0.23 34 507 5419 -23.9 -41.9 17 18.0 -25.8 268 57 302.7 302.7 282.7 303.4 0.19 35 500 5520 -24.7 -40.7 21 16.0 -26.4 270 59 302.9 303.0 282.9 303.7 0.22 36 483 5770 -26.7 -36.7 38 10.0 -27.9 270 60 303.5 303.5 283.2 304.6 0.34 37 477 5860 -27.3 -43.3 20 16.0 -28.8 270 60 303.8 303.9 283.2 304.4 0.17 38 470 5966 -28.1 -46.1 16 18.0 -29.6 270 61 304.1 304.1 283.2 304.6 0.13 39 443 6387 -30.5 -52.5 10 22.0 -31.9 275 63 306.3 306.3 284.0 306.5 0.07 40 433 6549 -30.5 -56.5 6 26.0 -32.0 274 72 308.3 308.3 284.7 308.4 0.04 41 415 6850 -30.7 -53.7 9 23.0 -32.1 271 92 311.8 311.8 286.1 312.0 0.06 42 405 7022 -31.1 -47.1 19 16.0 -32.4 269 103 313.5 313.5 286.7 314.0 0.14 43 404 7040 -31.1 -41.1 37 10.0 -32.1 269 103 313.7 313.7 286.9 314.6 0.26 44 403 7057 -31.1 -40.1 41 9.0 -32.0 268 103 313.9 314.0 287.1 314.9 0.29 45 401 7092 -31.3 -41.3 37 10.0 -32.3 266 104 314.1 314.1 287.1 315.0 0.26 46 400 7110 -31.3 -41.3 37 10.0 -32.3 265 104 314.3 314.4 287.2 315.2 0.26 47 395 7199 -31.9 -38.9 50 7.0 -32.6 265 105 314.7 314.7 287.3 315.9 0.33 48 394 7217 -32.1 -40.1 45 8.0 -32.9 265 105 314.6 314.7 287.3 315.7 0.30 49 392 7252 -32.1 -45.1 26 13.0 -33.2 265 105 315.1 315.1 287.3 315.7 0.17 50 388 7324 -32.5 -39.5 50 7.0 -33.2 265 105 315.5 315.5 287.6 316.6 0.32 51 384 7397 -33.1 -42.1 40 9.0 -33.9 265 106 315.6 315.7 287.6 316.5 0.25 52 382 7434 -33.3 -40.3 49 7.0 -34.0 265 106 315.8 315.9 287.7 316.9 0.30 53 366 7732 -35.1 -43.1 44 8.0 -35.8 263 108 317.3 317.4 288.2 318.2 0.23 54 361 7828 -35.5 -43.5 44 8.0 -36.1 262 110 318.0 318.1 288.3 318.9 0.23 55 300 9100 -40.1 -57.1 15 17.0 -40.9 250 150 328.8 328.9 291.5 329.1 0.06 56 250 10320 -49.3 -62.3 20 13.0 -49.6 255 144 332.8 332.8 292.5 332.9 0.04 57 220 11149 -54.9 -67.9 19 13.0 -55.1 250 140 336.5 336.5 293.4 336.6 0.02 58 200 11760 -54.5 -76.5 5 22.0 -54.8 255 151 346.5 346.5 295.8 346.5 0.01 59 198 11825 -54.7 -76.8 5 22.1 -54.9 255 152 347.2 347.2 296.0 347.2 0.01 60 150 13590 -59.7 -83.7 3 24.0 -59.9 265 125 367.2 367.2 300.1 367.2 0.00 61 100 16120 -60.3 -87.3 2 27.0 -60.6 260 69 411.2 411.2 306.7 411.2 0.00 62 98 16246 -59.3 -86.3 2 27.0 -59.6 260 69 415.5 415.5 307.2 415.6 0.00 63 91 16707 -61.5 -87.5 2 26.0 -61.8 260 65 420.1 420.1 307.7 420.1 0.00 64 88 16915 -60.5 -87.5 2 27.0 -60.8 260 61 426.1 426.1 308.4 426.1 0.00 65 78 17662 -62.5 -87.5 2 25.0 -62.8 269 50 436.9 436.9 309.6 437.0 0.00 66 76 17822 -60.9 -87.9 2 27.0 -61.3 275 49 443.5 443.5 310.2 443.6 0.00 67 70 18330 -63.3 -88.3 2 25.0 -63.6 300 44 449.0 449.0 310.7 449.0 0.00 68 58 19468 -68.7 -89.7 3 21.0 -68.9 259 39 461.6 461.6 311.9 461.6 0.00 69 56 19678 -67.9 -90.9 2 23.0 -68.1 263 40 468.1 468.1 312.5 468.1 0.00 70 53 20012 -63.5 -89.5 2 26.0 -63.8 261 41 485.7 485.7 313.9 485.7 0.00 71 50 20370 -62.5 -89.5 1 27.0 -62.9 255 40 496.2 496.2 314.7 496.2 0.00 72 45 21023 -61.5 -89.5 1 28.0 -62.0 270 42 513.8 513.8 315.9 513.8 0.00 73 43 21304 -62.9 -89.9 1 27.0 -63.4 279 41 517.1 517.1 316.1 517.1 0.00 74 41 21599 -61.3 -89.3 1 28.0 -61.9 270 35 528.2 528.2 316.8 528.2 0.00 75 38 22067 -64.3 -90.3 2 26.0 -64.7 252 25 532.1 532.1 317.1 532.1 0.00 76 30 23530 -59.9 -88.9 1 29.0 -60.8 275 28 581.3 581.3 319.8 581.4 0.00 77 29 23742 -58.9 -88.9 1 30.0 -60.0 284 29 589.8 589.8 320.2 589.8 0.00 78 27 24188 -60.5 -89.5 1 29.0 -61.4 252 25 597.4 597.4 320.5 597.5 0.00 79 25 24671 -56.1 -88.1 1 32.0 -57.8 279 26 623.4 623.4 321.6 623.4 0.01 80 23 25202 -55.3 -87.3 1 32.0 -57.2 277 28 640.8 640.8 322.3 640.8 0.01 81 21 25779 -57.3 -88.3 1 31.0 -59.0 282 11 651.6 651.6 322.7 651.7 0.01 82 20 26090 -52.9 -86.9 1 34.0 -55.6 315 11 674.3 674.3 323.6 674.3 0.01 83 20 26090 -53.5 -87.5 1 34.0 -56.1 315 11 672.4 672.4 323.5 672.5 0.01 84 19 26421 -52.7 -85.7 1 33.0 -55.5 327 13 684.8 684.8 323.9 684.9 0.01 85 17 27137 -54.5 -86.5 1 32.0 -57.1 221 13 701.2 701.2 324.5 701.3 0.01 86 15 27941 -54.3 -87.3 1 33.0 -57.2 260 21 727.4 727.4 325.3 727.5 0.01 87 15 27941 -50.7 -85.7 1 35.0 -54.7 260 21 739.4 739.4 325.6 739.5 0.02 88 14 28390 -51.1 -85.1 1 34.0 -55.2 281 17 752.8 752.8 326.0 752.9 0.02 89 13 28874 -49.7 -84.7 1 35.0 -54.5 276 13 773.7 773.7 326.6 773.9 0.02 90 13 28874 -47.7 -84.7 1 37.0 -53.2 276 13 780.7 780.7 326.8 780.9 0.02 91 12 29403 -47.7 -84.7 1 37.0 -53.5 236 11 798.7 798.8 327.2 799.0 0.03 92 10 30610 -47.1 -84.1 1 37.0 -53.8 5 9 843.7 843.7 328.2 844.0 0.03 93 9.7 30811 -46.7 -83.7 1 37.0 -53.7 20 9 852.6 852.6 328.5 853.0 0.04 94 7.4 32594 -48.5 -84.5 1 36.0 -55.8 157 9 913.9 913.9 329.7 914.3 0.04 95 7.0 32960 -46.9 -84.9 1 38.0 -55.2 185 9 935.2 935.2 330.1 935.6 0.04 96 6.6 33351 -45.9 -83.9 1 38.0 -54.9 955.2 955.3 330.4 955.8 0.05 TRP 220 11149 -54.9 -67.9 19 13.0 -55.1 250 140 336.5 336.5 293.4 336.6 0.02 WND 198 11825 -54.7 -76.8 5 22.1 -54.9 255 152 347.2 347.2 296.0 347.2 0.01 Sounding variables and indices 1000-500 mb thick: 5365.00 m Freezing level: 856.67 mb = 1399.66 m = 4592.01 ft Wetbulb zero: 955.66 mb = 521.49 m = 1710.91 ft Precipitable water: 0.45 inches Sfc-500 mean rel hum: 59.67 % Est. max temperature: 12.99 C = 55.38 F Sfc-Lift cond lev (LCL): 950.38 mb = 566.07 m = 1857.15 ft T: 0.83 C 700-500 lapse rate: 6.00 C/km ThetaE index: 0.84 C Layer 730.0- 704.0 mb Conv cond level (CCL): 806.69 mb = 1876.02 m = 6154.86 ft Mean mixing ratio: 3.46 g/kg Conv temperature: 13.42 C = 56.16 F Cap Strength: 12.96 C Lifted Index: 13.04 C Risk: None Lifted Index @300 mb: 28.99 C Lifted Index @700 mb: 7.47 C Showalter Index: 8.39 C Risk: None Total Totals Index: 43.40 C Risk: None Vertical Totals Index: 24.20 C Cross Totals Index: 19.20 C K Index: 15.90 Risk: < 20 % chance of thunderstorms Sweat Index: 113.00 Risk: None Energy Index: 2.00 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 21.00 J/kg Max Up Vert Vel: 6.48 m/s Conv Inhibition (B-): 64564.67 J/kg Cap Strength: 12.99 C Lift Cond Lev (LCL): 902.88 mb = 978.23 m = 3209.37 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 306 at 27 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 1008 98 165 6 -1.6 5.8 | 133 32 -23.1 21.6 1 1000 155 180 7 0.0 7.0 | 137 31 -21.5 22.8 2 982 305 190 11 1.9 10.8 | 144 33 -19.6 26.6 3 945 610 230 9 6.9 5.8 | 146 26 -14.6 21.6 4 925 784 245 11 10.0 4.6 | 150 23 -11.6 20.4 5 910 914 265 14 13.9 1.2 | 156 19 -7.6 17.0 6 876 1219 285 23 22.2 -6.0 | 184 10 0.7 9.8 7 850 1462 295 27 24.5 -11.4 | 214 5 2.9 4.4 8 843 1524 290 29 27.3 -9.9 | 224 8 5.7 5.8 9 811 1829 295 26 23.6 -11.0 | 203 5 2.0 4.8 10 780 2134 285 22 21.3 -5.7 | 178 10 -0.3 10.1 11 751 2438 285 25 24.1 -6.5 | 196 10 2.6 9.3 12 722 2743 285 27 26.1 -7.0 | 207 10 4.6 8.8 13 700 2987 290 33 31.0 -11.3 | 245 10 9.5 4.5 14 667 3353 290 38 35.7 -13.0 | 259 14 14.2 2.8 15 640 3658 285 42 40.6 -10.9 | 256 20 19.0 4.9 16 591 4267 275 48 47.8 -4.2 | 246 29 26.3 11.6 17 545 4877 270 49 49.0 -0.0 | 240 32 27.5 15.8 18 523 5182 265 51 50.8 4.4 | 235 36 29.3 20.2 19 500 5520 270 59 59.0 -0.0 | 247 41 37.5 15.8 20 461 6096 270 61 61.0 -0.0 | 248 43 39.5 15.8 21 442 6401 275 63 62.8 -5.5 | 256 42 41.2 10.3 22 406 7010 270 103 103.0 -0.0 | 259 83 81.5 15.8 23 400 7110 265 104 103.6 9.1 | 253 86 82.1 24.8 24 372 7620 265 107 106.6 9.3 | 254 89 85.1 25.1 25 340 8230 255 115 111.1 29.8 | 243 100 89.6 45.5 26 300 9100 250 150 141.0 51.3 | 241 137 119.4 67.1 27 298 9144 255 147 142.0 38.0 | 246 132 120.5 53.8 28 250 10320 255 144 139.1 37.3 | 246 129 117.6 53.0 29 220 11149 250 140 131.6 47.9 | 240 127 110.0 63.6 30 216 11278 250 140 131.6 47.9 | 240 127 110.0 63.6 31 200 11760 255 151 145.9 39.1 | 246 136 124.3 54.8 32 198 11825 255 152 146.8 39.3 | 246 137 125.3 55.1 33 196 11887 255 152 146.8 39.3 | 246 137 125.3 55.1 34 154 13411 265 123 122.5 10.7 | 255 104 101.0 26.5 35 150 13590 265 125 124.5 10.9 | 255 106 103.0 26.7 36 140 14021 265 127 126.5 11.1 | 256 108 105.0 26.8 37 133 14326 270 108 108.0 -0.0 | 260 88 86.5 15.8 38 115 15240 260 98 96.5 17.0 | 246 82 75.0 32.8 39 104 15850 265 90 89.7 7.8 | 251 72 68.1 23.6 40 100 16120 260 69 68.0 12.0 | 239 54 46.4 27.7 41 95 16459 260 69 68.0 12.0 | 239 54 46.4 27.7 42 82 17374 260 53 52.2 9.2 | 231 40 30.7 25.0 43 70 18288 290 45 42.3 -15.4 | 269 21 20.8 0.4 44 70 18330 300 44 38.1 -22.0 | 291 18 16.6 -6.2 45 67 18593 300 45 39.0 -22.5 | 291 19 17.4 -6.7 46 61 19202 255 37 35.7 9.6 | 209 29 14.2 25.3 47 55 19812 265 41 40.8 3.6 | 225 27 19.3 19.3 48 50 20370 255 40 38.6 10.4 | 213 31 17.1 26.1 49 50 20422 250 43 40.4 14.7 | 212 36 18.9 30.5 50 43 21336 280 41 40.4 -7.1 | 245 21 18.9 8.6 51 37 22250 245 21 19.0 8.9 | 174 25 -2.5 24.6 52 33 22860 260 34 33.5 5.9 | 209 25 12.0 21.7 53 30 23470 255 30 29.0 7.8 | 198 25 7.5 23.5 54 30 23530 275 28 27.9 -2.4 | 206 15 6.4 13.3 55 29 23774 285 29 28.0 -7.5 | 218 11 6.5 8.3 56 28 24079 250 23 21.6 7.9 | 180 24 0.1 23.6 57 26 24384 255 29 28.0 7.5 | 196 24 6.5 23.3 58 25 24689 280 26 25.6 -4.5 | 200 12 4.1 11.3 59 24 24994 270 27 27.0 -0.0 | 199 17 5.5 15.8 60 23 25298 280 29 28.6 -5.0 | 213 13 7.0 10.7 61 22 25603 300 13 11.3 -6.5 | 132 14 -10.3 9.3 62 21 25908 270 10 10.0 -0.0 | 144 20 -11.5 15.8 63 20 26090 315 11 7.8 -7.8 | 120 16 -13.7 8.0 64 19 26518 330 14 7.0 -12.1 | 104 15 -14.5 3.6 65 18 26822 255 10 9.7 2.6 | 147 22 -11.9 18.4 66 17 27127 220 13 8.4 10.0 | 153 29 -13.2 25.7 67 16 27432 240 14 12.1 7.0 | 158 25 -9.4 22.8 68 16 27737 260 19 18.7 3.3 | 172 19 -2.8 19.1 69 15 28042 260 22 21.7 3.8 | 180 20 0.1 19.6 70 14 28651 295 14 12.7 -5.9 | 138 13 -8.8 9.8 71 12 29566 225 10 7.1 7.1 | 148 27 -14.5 22.8 72 11 30175 275 15 14.9 -1.3 | 156 16 -6.6 14.5 73 10 30610 5 9 -0.8 -9.0 | 107 23 -22.3 6.8 74 7 32960 185 9 0.8 9.0 | 140 32 -20.7 24.7 Wind Parameters Mean winds (0-6000m): 276.2 at 35.6 knts Storm direction: 306.2 at 26.7 knts Shear (0-3000m) pos: 7.0 neg: 0.6 tot: 7.7 10-3/s Storm rel Dir Shear (0-3000m): 117.0 deg Storm rel helicity (0-3000m) pos: 152.5 neg: -9.4 tot: 143.1 m^2/s^2 ave: 47.7 10^-3 m/s^2 rel: 0.50 Storm rel vorticity (0-3000m) horiz: 10.4 stream: 5.2 10^-3/s Energy-Hel index: 0.02 Bulk Rich Number: 0.13 Bulk Shear: 161.02 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 ------------------------------------------------------------------------------- 500 198 9 143 31| 8.6 0.0 8.6| 61.5 -0.8 60.7 121.4 0.55| 13.3 7.4 1000 234 11 151 26| 11.5 0.0 11.5|103.2 -0.8 102.4 102.4 0.54| 14.5 7.9 1500 266 16 161 18| 11.0 0.0 11.0|120.7 -0.9 119.9 79.9 0.57| 13.6 7.8 2000 277 18 166 14| 8.3 1.6 9.9|120.7 -9.4 111.3 55.7 0.38| 12.2 4.6 2500 279 19 170 13| 6.6 0.8 7.4|130.2 -9.4 120.8 48.3 0.42| 10.6 4.5 3000 281 21 176 12| 7.0 0.6 7.7|152.5 -9.4 143.1 47.7 0.50| 10.4 5.2 4000 283 26 202 11| 5.3 2.0 7.2|159.0 -30.1 128.9 32.2 0.37| 9.8 3.7 5000 279 31 220 14| 4.2 2.6 6.8|159.0 -81.9 77.1 15.4 0.25| 8.9 2.3 6000 276 36 229 18| 4.4 2.1 6.6|243.0 -85.8 157.2 26.2 0.30| 8.5 2.6 Wrote GIF file: /home/apache/climate/data/raob//KIAD/skewt/KIAD.skewt.20251208.00.gif