UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025121712.upa.cvt Date: 1200Z 17 DEC 25 Searching for KIAD... Searching the city database file for: KIAD ... Date:1200Z 17 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 1006 98 -1.9 -8.9 59 7.0 -4.1 180 5 270.8 271.1 268.7 276.1 1.93 1 1000 136 -1.5 -10.5 50 9.0 -4.2 210 7 271.6 271.9 268.9 276.4 1.71 2 990 216 -1.5 -11.5 46 10.0 -4.5 217 13 272.4 272.7 269.2 276.9 1.60 3 985 257 0.4 -12.6 37 13.0 -3.5 221 16 274.7 275.0 270.5 278.9 1.47 4 979 306 1.2 -11.8 37 13.0 -2.9 225 20 276.0 276.3 271.4 280.5 1.58 5 971 372 3.0 -7.0 48 10.0 -0.6 223 21 278.5 278.9 274.0 285.1 2.32 6 969 389 4.6 -3.4 56 8.0 1.4 222 21 280.3 280.8 276.1 288.9 3.06 7 967 406 6.8 -1.2 57 8.0 3.3 222 21 282.6 283.3 278.1 292.9 3.62 8 963 440 8.0 0.0 57 8.0 4.4 220 22 284.2 284.9 279.3 295.4 3.97 9 959 474 8.2 0.2 57 8.0 4.5 219 22 284.7 285.4 279.6 296.2 4.04 10 925 772 7.4 1.4 66 6.0 4.5 225 18 286.9 287.7 281.3 299.9 4.57 11 911 898 7.0 2.0 70 5.0 4.6 251 18 287.7 288.6 282.0 301.5 4.85 12 908 925 7.4 2.4 71 5.0 4.9 256 18 288.4 289.3 282.5 302.7 5.01 13 882 1163 6.0 2.0 75 4.0 4.1 283 24 289.4 290.2 282.9 303.7 5.01 14 850 1465 3.8 2.1 89 1.7 2.9 285 31 290.1 291.1 283.5 305.2 5.24 15 823 1726 1.8 1.6 99 0.2 1.7 285 44 290.7 291.6 283.7 305.7 5.22 16 815 1805 2.6 0.9 89 1.7 1.8 285 48 292.4 293.3 284.1 306.9 5.01 17 801 1945 1.6 0.2 90 1.4 1.0 277 42 292.8 293.6 284.1 306.8 4.85 18 798 1975 2.4 -2.1 72 4.5 0.4 275 41 293.9 294.7 283.8 306.0 4.11 19 797 1985 4.2 -4.8 52 9.0 0.3 274 40 295.9 296.5 283.8 306.0 3.35 20 796 1995 4.4 -5.6 48 10.0 0.1 274 39 296.3 296.8 283.7 305.8 3.16 21 794 2016 6.0 -8.0 36 14.0 0.2 272 38 298.2 298.7 283.9 306.2 2.63 22 792 2037 5.8 -8.2 36 14.0 0.1 271 37 298.2 298.7 283.8 306.1 2.60 23 790 2057 7.4 -13.6 21 21.0 -0.4 270 36 300.1 300.4 283.5 305.4 1.69 24 787 2089 8.2 -16.8 15 25.0 -0.6 268 34 301.3 301.5 283.6 305.5 1.30 25 782 2141 9.0 -19.0 12 28.0 -0.5 265 32 302.7 302.9 283.9 306.2 1.09 26 781 2152 9.0 -19.0 12 28.0 -0.5 265 32 302.8 303.0 284.0 306.3 1.09 27 700 3047 2.6 -23.4 13 26.0 -5.1 245 36 305.4 305.5 284.6 308.1 0.83 28 669 3412 0.0 -27.0 11 27.0 -7.1 246 38 306.4 306.5 284.8 308.5 0.63 29 617 4056 -3.5 -35.5 6 32.0 -10.2 256 41 309.6 309.6 285.5 310.7 0.30 30 603 4238 -4.5 -26.5 16 22.0 -10.2 259 41 310.5 310.6 286.4 312.9 0.73 31 590 4409 -5.7 -28.7 14 23.0 -11.3 261 42 311.0 311.1 286.4 313.1 0.61 32 545 5025 -11.3 -30.3 19 19.0 -15.3 265 43 311.5 311.6 286.5 313.4 0.56 33 500 5680 -16.9 -32.9 24 16.0 -19.8 265 40 312.4 312.5 286.8 314.1 0.48 34 496 5740 -17.3 -31.3 28 14.0 -19.9 266 40 312.7 312.8 286.9 314.6 0.56 35 489 5846 -18.3 -33.3 26 15.0 -20.9 267 40 312.7 312.8 286.9 314.4 0.47 36 484 5922 -18.9 -36.9 19 18.0 -21.7 268 40 312.9 313.0 286.8 314.1 0.33 37 469 6155 -20.7 -31.7 37 11.0 -22.6 270 40 313.5 313.6 287.2 315.5 0.57 38 467 6187 -20.7 -34.7 27 14.0 -22.9 269 40 313.9 314.0 287.2 315.4 0.43 39 463 6250 -21.3 -35.3 27 14.0 -23.5 269 40 313.9 314.0 287.2 315.3 0.41 40 448 6492 -23.5 -35.5 32 12.0 -25.2 267 39 314.1 314.2 287.3 315.6 0.41 41 446 6524 -23.5 -39.5 22 16.0 -25.6 267 39 314.5 314.6 287.2 315.5 0.28 42 417 7011 -26.7 -51.7 8 25.0 -28.7 260 41 316.5 316.5 287.7 316.8 0.08 43 413 7081 -27.1 -47.1 13 20.0 -29.0 259 42 316.9 316.9 287.9 317.4 0.13 44 403 7257 -28.3 -52.3 8 24.0 -30.2 256 43 317.5 317.5 288.1 317.8 0.08 45 400 7310 -28.3 -53.3 7 25.0 -30.2 255 44 318.2 318.2 288.2 318.5 0.07 46 383 7619 -30.1 -55.1 7 25.0 -31.8 245 47 319.8 319.8 288.8 320.0 0.06 47 369 7882 -32.7 -57.7 6 25.0 -34.1 241 47 319.8 319.8 288.7 320.0 0.04 48 345 8351 -36.5 -58.5 8 22.0 -37.5 242 49 320.8 320.8 289.0 321.0 0.04 49 322 8824 -40.9 -54.9 21 14.0 -41.5 244 51 321.2 321.2 289.2 321.4 0.07 50 302 9256 -44.5 -56.5 25 12.0 -44.9 249 54 322.0 322.0 289.5 322.3 0.06 51 300 9300 -44.9 -55.9 28 11.0 -45.3 250 54 322.1 322.1 289.5 322.3 0.07 52 292 9480 -46.5 -53.5 45 7.0 -46.8 251 54 322.3 322.3 289.6 322.6 0.09 53 290 9525 -46.7 -53.7 45 7.0 -47.0 251 54 322.6 322.7 289.7 323.0 0.09 54 287 9594 -47.3 -50.3 71 3.0 -47.4 251 54 322.7 322.8 289.8 323.3 0.13 55 284 9664 -47.9 -49.8 81 1.9 -48.0 252 53 322.9 322.9 289.8 323.4 0.14 56 282 9710 -48.3 -50.6 77 2.3 -48.4 252 53 322.9 323.0 289.8 323.4 0.13 57 250 10490 -55.5 -59.1 64 3.6 -55.6 255 52 323.6 323.6 289.9 323.8 0.05 58 200 11890 -57.9 -76.9 7 19.0 -58.1 260 62 341.1 341.1 294.6 341.1 0.01 59 150 13730 -56.9 -84.9 2 28.0 -57.2 270 48 372.0 372.0 300.9 372.1 0.00 60 100 16260 -61.7 -86.7 2 25.0 -61.9 270 49 408.5 408.5 306.3 408.5 0.00 61 95 16576 -62.1 -87.1 2 25.0 -62.3 271 47 413.8 413.8 307.0 413.8 0.00 62 94 16642 -60.5 -86.5 2 26.0 -60.8 271 47 418.2 418.2 307.5 418.2 0.00 63 85 17264 -62.3 -86.3 3 24.0 -62.6 266 34 426.7 426.7 308.5 426.7 0.00 64 73 18188 -68.1 -88.1 4 20.0 -68.2 270 31 433.5 433.5 309.2 433.5 0.00 65 70 18440 -66.7 -88.7 3 22.0 -66.9 285 39 441.7 441.7 310.0 441.7 0.00 66 68 18615 -67.5 -88.5 4 21.0 -67.7 285 39 443.6 443.6 310.3 443.7 0.00 67 65 18887 -66.5 -88.5 3 22.0 -66.7 285 39 451.6 451.6 311.0 451.6 0.00 68 63 19075 -67.7 -88.7 3 21.0 -67.9 291 27 453.0 453.0 311.1 453.0 0.00 69 57 19681 -65.1 -89.1 2 24.0 -65.4 272 32 472.0 472.1 312.8 472.1 0.00 70 56 19788 -65.9 -89.9 2 24.0 -66.1 279 39 472.6 472.6 312.8 472.6 0.00 71 54 20010 -63.7 -89.7 2 26.0 -64.0 290 34 482.6 482.6 313.7 482.6 0.00 72 50 20480 -65.3 -89.3 2 24.0 -65.6 270 29 489.6 489.6 314.2 489.6 0.00 73 49 20603 -65.5 -89.5 2 24.0 -65.8 272 29 492.0 492.0 314.4 492.0 0.00 74 44 21259 -64.1 -89.1 2 25.0 -64.5 276 23 510.8 510.8 315.7 510.8 0.00 75 43 21400 -65.1 -90.1 2 25.0 -65.4 277 23 511.7 511.7 315.8 511.7 0.00 76 41 21692 -62.1 -89.1 2 27.0 -62.6 287 28 526.2 526.2 316.7 526.2 0.00 77 33 23019 -66.5 -91.5 2 25.0 -66.9 310 26 548.2 548.2 318.0 548.2 0.00 78 32 23206 -64.9 -90.9 2 26.0 -65.4 306 25 557.3 557.3 318.5 557.3 0.00 79 32 23206 -64.3 -90.3 2 26.0 -64.8 306 25 558.9 558.9 318.6 559.0 0.00 80 30 23600 -64.7 -90.7 2 26.0 -65.2 295 35 568.3 568.3 319.0 568.3 0.00 81 22 25477 -67.5 -91.5 2 24.0 -68.0 295 44 612.6 612.6 321.2 612.6 0.00 82 21 25757 -66.7 -90.7 2 24.0 -67.2 293 47 623.2 623.2 321.6 623.3 0.00 83 20 26050 -69.5 -91.5 3 22.0 -69.9 300 52 623.4 623.4 321.6 623.5 0.00 84 18 26678 -70.7 -92.7 2 22.0 -71.1 303 54 638.7 638.7 322.3 638.7 0.00 85 17 27024 -64.3 -91.3 1 27.0 -65.2 305 56 669.8 669.8 323.4 669.8 0.01 86 16 27393 -67.1 -91.1 2 24.0 -67.8 296 58 672.3 672.4 323.5 672.4 0.01 87 14 28200 -67.5 -91.5 2 24.0 -68.2 298 66 697.2 697.2 324.3 697.2 0.01 88 12 29144 -61.3 -89.3 1 28.0 -63.0 294 63 750.6 750.6 326.0 750.6 0.01 89 12 29144 -60.9 -88.9 1 28.0 -62.7 294 63 752.0 752.0 326.0 752.1 0.01 90 11 29685 -61.5 -89.5 1 28.0 -63.3 282 61 768.7 768.7 326.4 768.8 0.01 91 11 29685 -60.1 -89.1 1 29.0 -62.2 282 61 773.8 773.8 326.6 773.9 0.01 92 10 30280 -60.9 -88.9 1 28.0 -63.0 275 73 792.2 792.2 327.1 792.3 0.01 93 9.7 30471 -58.7 -87.7 1 29.0 -61.4 274 74 807.4 807.4 327.4 807.6 0.02 94 9.5 30601 -59.3 -88.3 1 29.0 -61.9 274 75 810.0 810.0 327.5 810.1 0.02 95 9.0 30941 -58.9 -87.9 1 29.0 -61.7 272 77 824.2 824.2 327.8 824.3 0.02 96 8.5 31305 -52.7 -85.7 1 33.0 -57.6 270 79 862.0 862.0 328.7 862.3 0.03 97 8.1 31618 -49.5 -83.5 1 34.0 -55.9 269 81 886.6 886.7 329.2 887.1 0.05 98 7.4 32206 -53.3 -84.3 1 31.0 -58.4 267 84 894.4 894.4 329.3 894.8 0.04 99 7.2 32384 -48.7 -83.7 1 35.0 -55.9 266 85 920.3 920.3 329.8 920.8 0.05 100 7.0 32570 -47.8 -82.3 1 34.5 -55.6 265 86 931.4 931.4 330.0 932.1 0.06 101 6.8 32762 -46.9 -80.9 1 34.0 -55.2 943.0 943.0 330.2 943.9 0.08 TRP 73 18188 -68.1 -88.1 4 20.0 -68.2 270 31 433.5 433.5 309.2 433.5 0.00 WND 7.0 32570 -47.8 -82.3 1 34.5 -55.6 265 86 931.4 931.4 330.0 932.1 0.06 Sounding variables and indices 1000-500 mb thick: 5544.00 m Freezing level: Surface below freezing Freezing level: 986.05 mb = 248.15 m = 814.13 ft Freezing level: 669.00 mb = 3411.85 m = 11193.61 ft Wetbulb zero: Below ground Precipitable water: 0.46 inches Sfc-500 mean rel hum: 33.82 % Est. max temperature: 17.33 C = 63.19 F Sfc-Lift cond lev (LCL): 901.05 mb = 987.79 m = 3240.74 ft T: 7.03 C 700-500 lapse rate: 7.41 C/km ThetaE index: 1.15 C Layer 801.0- 794.0 mb Conv cond level (CCL): 1000.00 mb = 136.00 m = 446.19 ft Mean mixing ratio: 3.44 g/kg Conv temperature: -0.97 C = 30.25 F Cap Strength: 19.12 C Lifted Index: 18.24 C Risk: None Lifted Index @300 mb: 21.76 C Lifted Index @700 mb: 17.26 C Showalter Index: 8.54 C Risk: None Total Totals Index: 39.70 C Risk: None Vertical Totals Index: 20.70 C Cross Totals Index: 19.00 C K Index: -3.20 Risk: None Sweat Index: 127.20 Risk: None Energy Index: 2.01 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 77.79 J/kg Max Up Vert Vel: 12.47 m/s Conv Inhibition (B-): 74877.88 J/kg Cap Strength: 19.09 C Lift Cond Lev (LCL): 857.25 mb = 1395.68 m = 4578.95 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 290 at 26 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 1006 98 180 5 0.0 5.0 | 120 28 -24.5 14.1 1 1000 136 210 7 3.5 6.1 | 126 26 -21.0 15.2 2 980 305 225 20 14.1 14.1 | 156 25 -10.4 23.2 3 944 610 215 24 13.8 19.7 | 159 31 -10.8 28.8 4 925 772 225 18 12.7 12.7 | 152 25 -11.8 21.8 5 909 914 255 18 17.4 4.7 | 153 16 -7.1 13.8 6 876 1219 290 25 23.5 -8.6 | 118 1 -1.0 0.5 7 850 1465 285 31 29.9 -8.0 | 259 6 5.4 1.1 8 813 1829 285 49 47.3 -12.7 | 279 23 22.8 -3.6 9 783 2134 265 32 31.9 2.8 | 212 14 7.3 11.9 10 754 2438 260 30 29.5 5.2 | 199 15 5.0 14.3 11 727 2743 250 31 29.1 10.6 | 193 20 4.6 19.7 12 700 3047 245 36 32.6 15.2 | 198 26 8.1 24.3 13 700 3048 240 36 31.2 18.0 | 194 28 6.6 27.1 14 647 3658 250 40 37.6 13.7 | 210 26 13.1 22.8 15 599 4267 260 41 40.4 7.1 | 224 23 15.8 16.2 16 554 4877 265 44 43.8 3.8 | 236 23 19.3 12.9 17 500 5680 265 40 39.8 3.5 | 231 20 15.3 12.6 18 472 6096 270 40 40.0 -0.0 | 240 18 15.5 9.1 19 435 6706 265 38 37.9 3.3 | 227 18 13.3 12.4 20 400 7310 255 44 42.5 11.4 | 221 27 18.0 20.5 21 382 7620 245 47 42.6 19.9 | 212 34 18.1 29.0 22 366 7925 240 47 40.7 23.5 | 206 36 16.2 32.6 23 307 9144 245 53 48.0 22.4 | 217 39 23.5 31.5 24 300 9300 250 54 50.7 18.5 | 224 38 26.2 27.6 25 250 10490 255 52 50.2 13.5 | 229 34 25.7 22.6 26 200 11890 260 62 61.1 10.8 | 241 42 36.5 19.9 27 191 12192 265 64 63.8 5.6 | 249 42 39.2 14.7 28 182 12497 270 60 60.0 -0.0 | 256 37 35.5 9.1 29 173 12802 260 49 48.3 8.5 | 233 30 23.7 17.6 30 150 13716 275 53 52.8 -4.6 | 261 29 28.3 4.5 31 150 13730 270 48 48.0 -0.0 | 249 25 23.5 9.1 32 136 14326 265 48 47.8 4.2 | 240 27 23.3 13.3 33 124 14935 275 52 51.8 -4.5 | 261 28 27.3 4.6 34 118 15240 245 47 42.6 19.9 | 212 34 18.1 29.0 35 107 15850 265 59 58.8 5.1 | 247 37 34.2 14.2 36 100 16260 270 49 49.0 -0.0 | 250 26 24.5 9.1 37 97 16459 270 49 49.0 -0.0 | 250 26 24.5 9.1 38 88 17069 275 41 40.8 -3.6 | 251 17 16.3 5.5 39 83 17374 260 30 29.5 5.2 | 199 15 5.0 14.3 40 79 17678 245 30 27.2 12.7 | 187 22 2.7 21.8 41 73 18188 270 31 31.0 -0.0 | 215 11 6.5 9.1 42 72 18288 275 31 30.9 -2.7 | 225 9 6.3 6.4 43 70 18440 285 39 37.7 -10.1 | 274 13 13.1 -1.0 44 65 18898 285 39 37.7 -10.1 | 274 13 13.1 -1.0 45 62 19202 295 18 16.3 -7.6 | 100 8 -8.2 1.5 46 59 19507 260 21 20.7 3.6 | 163 13 -3.9 12.7 47 56 19812 280 40 39.4 -6.9 | 262 15 14.9 2.1 48 53 20117 295 31 28.1 -13.1 | 318 5 3.6 -4.0 49 50 20422 270 22 22.0 -0.0 | 164 9 -2.5 9.1 50 50 20480 270 29 29.0 -0.0 | 206 10 4.5 9.1 51 46 21031 280 27 26.6 -4.7 | 205 5 2.1 4.4 52 43 21336 275 22 21.9 -1.9 | 160 8 -2.6 7.2 53 39 21946 295 33 29.9 -13.9 | 312 7 5.4 -4.9 54 37 22250 285 22 21.3 -5.7 | 136 5 -3.3 3.4 55 36 22555 325 28 16.1 -22.9 | 31 16 -8.5 -13.8 56 32 23165 305 25 20.5 -14.3 | 38 7 -4.1 -5.2 57 31 23470 315 28 19.8 -19.8 | 24 12 -4.7 -10.7 58 30 23600 295 35 31.7 -14.8 | 308 9 7.2 -5.7 59 29 23774 285 32 30.9 -8.3 | 263 6 6.4 0.8 60 26 24384 300 39 33.8 -19.5 | 318 14 9.2 -10.4 61 25 24689 315 45 31.8 -31.8 | 342 24 7.3 -22.7 62 24 24994 315 42 29.7 -29.7 | 346 21 5.2 -20.6 63 22 25603 290 45 42.3 -15.4 | 290 19 17.8 -6.3 64 20 26050 300 52 45.0 -26.0 | 310 27 20.5 -16.9 65 17 27127 305 56 45.9 -32.1 | 317 31 21.3 -23.0 66 16 27432 295 58 52.6 -24.5 | 299 32 28.0 -15.4 67 15 27737 290 63 59.2 -21.5 | 290 37 34.7 -12.5 68 13 28651 305 69 56.5 -39.6 | 314 44 32.0 -30.5 69 11 29566 285 58 56.0 -15.0 | 281 32 31.5 -5.9 70 10 30175 270 70 70.0 -0.0 | 259 46 45.5 9.1 71 10 30280 275 73 72.7 -6.4 | 267 48 48.2 2.7 72 7 32570 265 86 85.7 7.5 | 255 63 61.1 16.6 Wind Parameters Mean winds (0-6000m): 260.3 at 34.9 knts Storm direction: 290.3 at 26.2 knts Shear (0-3000m) pos: 6.7 neg: 4.8 tot: 11.5 10-3/s Storm rel Dir Shear (0-3000m): 75.1 deg Storm rel helicity (0-3000m) pos: 151.4 neg: -139.6 tot: 11.8 m^2/s^2 ave: 3.9 10^-3 m/s^2 rel: -0.02 Storm rel vorticity (0-3000m) horiz: 19.4 stream: -0.3 10^-3/s Energy-Hel index: 0.07 Bulk Rich Number: 0.98 Bulk Shear: 79.20 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 ------------------------------------------------------------------------------- 500 219 18 150 26| 20.6 0.0 20.6|125.4 0.0 125.4 250.7 0.83| 22.6 18.7 1000 231 19 154 23| 12.0 0.0 12.0|131.0 -22.9 108.1 108.1 0.36| 23.7 8.6 1500 255 22 167 15| 13.4 0.0 13.4|136.1 -23.9 112.2 74.8 0.32| 22.3 7.2 2000 266 27 193 11| 10.1 3.0 13.0|142.5-102.1 40.4 20.2 0.06| 24.1 1.3 2500 265 28 196 12| 8.1 3.9 12.0|142.5-127.4 15.1 6.0 -0.01| 21.1 -0.3 3000 262 29 196 14| 6.7 4.8 11.5|151.4-139.6 11.8 3.9 -0.02| 19.4 -0.3 4000 257 31 201 17| 6.4 3.6 10.0|230.2-139.6 90.7 22.7 0.08| 16.1 1.2 5000 259 34 208 18| 5.7 2.9 8.6|269.4-142.5 126.9 25.4 0.12| 13.7 1.6 6000 260 35 213 18| 4.9 2.4 7.3|283.3-150.4 132.9 22.2 0.12| 11.9 1.5 Wrote GIF file: /home/apache/climate/data/raob//KIAD/skewt/KIAD.skewt.20251217.12.gif