UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025120712.upa.cvt Date: 1200Z 7 DEC 25 Searching for KIAD... Searching the city database file for: KIAD ... Date:1200Z 7 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 1009 98 -4.3 -5.0 95 0.7 -4.6 0 0 268.2 268.6 268.1 275.2 2.61 1 1005 126 -3.1 -3.7 96 0.6 -3.3 62 0 269.7 270.1 269.5 277.4 2.89 2 1001 155 -2.5 -3.5 93 1.0 -2.9 124 1 270.6 271.1 270.2 278.5 2.94 3 1000 162 -1.7 -3.2 89 1.5 -2.3 140 1 271.5 271.9 270.9 279.6 3.01 4 997 186 0.0 -3.1 80 3.1 -1.2 121 2 273.4 273.9 272.1 281.7 3.05 5 994 210 1.0 -3.5 72 4.5 -0.7 101 3 274.6 275.1 272.8 282.8 2.96 6 973 382 1.0 -4.0 69 5.0 -0.9 16 7 276.3 276.8 273.6 284.4 2.92 7 925 787 -2.3 -5.0 82 2.7 -3.3 340 9 277.0 277.4 273.9 284.9 2.84 8 914 882 -3.1 -5.3 85 2.2 -3.9 325 9 277.1 277.6 274.0 284.9 2.81 9 894 1057 -3.5 -5.4 87 1.9 -4.2 287 12 278.4 278.9 274.8 286.4 2.86 10 850 1455 -5.1 -6.5 90 1.4 -5.6 240 21 280.8 281.3 275.9 288.6 2.76 11 846 1492 -5.3 -6.7 90 1.4 -5.8 240 21 281.0 281.4 276.0 288.7 2.73 12 839 1557 -4.9 -7.8 80 2.9 -5.9 239 20 282.1 282.5 276.3 289.3 2.53 13 832 1623 -4.5 -13.5 49 9.0 -7.2 238 18 283.2 283.4 275.6 287.9 1.62 14 829 1651 -3.9 -21.9 23 18.0 -8.2 238 18 284.1 284.2 274.8 286.5 0.80 15 822 1718 -3.5 -29.5 11 26.0 -8.7 237 16 285.2 285.3 274.8 286.5 0.40 16 813 1805 -3.1 -32.1 9 29.0 -8.7 235 14 286.5 286.6 275.4 287.5 0.32 17 808 1854 -2.9 -32.9 8 30.0 -8.6 236 13 287.2 287.3 275.7 288.2 0.30 18 774 2193 -4.5 -33.5 8 29.0 -9.9 251 17 289.1 289.1 276.7 290.0 0.29 19 769 2244 -4.3 -41.3 4 37.0 -10.1 252 17 289.8 289.8 276.8 290.3 0.13 20 764 2296 -4.5 -34.5 8 30.0 -10.0 253 18 290.1 290.2 277.2 291.0 0.27 21 700 2977 -9.7 -27.7 22 18.0 -13.3 265 22 291.7 291.8 278.4 293.5 0.56 22 686 3132 -10.1 -33.1 13 23.0 -14.1 267 23 293.0 293.0 278.7 294.1 0.34 23 632 3758 -13.5 -41.5 7 28.0 -17.2 274 30 296.1 296.1 279.8 296.6 0.16 24 622 3879 -13.9 -38.9 10 25.0 -17.4 273 32 297.0 297.0 280.3 297.7 0.21 25 616 3953 -14.3 -30.3 24 16.0 -17.2 273 33 297.3 297.4 280.9 299.0 0.50 26 610 4026 -14.9 -27.9 32 13.0 -17.4 272 34 297.5 297.6 281.1 299.5 0.63 27 586 4328 -17.7 -26.7 45 9.0 -19.4 270 40 297.6 297.8 281.3 300.0 0.73 28 585 4340 -17.9 -24.9 54 7.0 -19.3 270 40 297.5 297.7 281.5 300.3 0.87 29 583 4366 -17.7 -21.6 72 3.9 -18.6 270 41 298.1 298.3 282.1 301.8 1.17 30 580 4405 -17.1 -20.2 77 3.1 -17.9 270 41 299.2 299.5 282.7 303.4 1.32 31 566 4588 -16.5 -20.4 72 3.9 -17.4 270 45 302.0 302.3 283.9 306.3 1.33 32 554 4748 -17.1 -21.9 66 4.8 -18.2 270 47 303.2 303.4 284.2 307.0 1.19 33 504 5451 -20.5 -23.4 78 2.9 -21.1 265 72 307.3 307.6 285.7 311.1 1.15 34 500 5510 -20.9 -23.5 80 2.6 -21.5 265 74 307.6 307.8 285.8 311.3 1.15 35 497 5555 -21.3 -23.7 81 2.4 -21.8 265 75 307.6 307.8 285.8 311.3 1.14 36 473 5920 -23.7 -27.3 72 3.6 -24.4 262 80 309.0 309.2 286.0 311.9 0.86 37 445 6366 -26.7 -29.1 80 2.4 -27.1 259 89 310.7 310.8 286.5 313.3 0.77 38 421 6765 -29.7 -34.0 66 4.3 -30.3 257 98 311.8 311.9 286.6 313.6 0.51 39 403 7077 -32.1 -35.8 70 3.7 -32.5 255 106 312.6 312.7 286.8 314.2 0.45 40 400 7130 -32.5 -35.2 77 2.7 -32.8 255 107 312.7 312.8 286.9 314.4 0.48 41 394 7236 -33.3 -35.2 83 1.9 -33.5 255 108 313.1 313.2 287.0 314.8 0.49 42 388 7344 -34.1 -36.7 77 2.6 -34.4 255 110 313.4 313.5 287.1 314.9 0.42 43 387 7362 -34.1 -35.5 87 1.4 -34.3 255 110 313.6 313.7 287.2 315.3 0.48 44 384 7416 -34.1 -35.2 90 1.1 -34.2 255 111 314.3 314.4 287.5 316.1 0.50 45 381 7471 -34.5 -35.5 91 1.0 -34.6 255 112 314.5 314.6 287.5 316.2 0.49 46 380 7489 -34.3 -36.9 77 2.6 -34.6 255 112 315.0 315.1 287.6 316.5 0.42 47 379 7508 -34.3 -35.5 89 1.2 -34.4 255 112 315.2 315.3 287.8 317.0 0.49 48 376 7563 -34.9 -36.8 83 1.9 -35.1 255 113 315.2 315.2 287.6 316.7 0.43 49 372 7638 -35.1 -41.1 54 6.0 -35.6 255 114 315.9 315.9 287.7 316.9 0.28 50 371 7657 -35.1 -42.1 49 7.0 -35.7 255 114 316.1 316.2 287.8 317.0 0.25 51 370 7675 -34.9 -47.9 25 13.0 -35.8 256 113 316.6 316.6 287.8 317.1 0.14 52 369 7694 -34.9 -46.9 28 12.0 -35.8 256 113 316.9 316.9 287.9 317.4 0.15 53 347 8120 -38.3 -46.3 43 8.0 -38.8 263 108 317.9 317.9 288.2 318.5 0.17 54 345 8159 -38.3 -46.3 43 8.0 -38.8 264 107 318.4 318.4 288.4 319.1 0.17 55 300 9110 -43.1 -61.1 12 18.0 -43.7 260 119 324.6 324.6 290.2 324.8 0.03 56 250 10320 -49.1 -65.1 14 16.0 -49.5 265 132 333.1 333.1 292.6 333.2 0.02 57 226 10976 -52.0 -68.9 11 16.9 -52.3 265 145 338.4 338.4 293.9 338.5 0.02 58 200 11760 -55.5 -73.5 9 18.0 -55.8 265 139 344.9 344.9 295.5 344.9 0.01 59 150 13600 -56.7 -84.7 2 28.0 -57.0 255 117 372.4 372.4 301.0 372.4 0.00 60 100 16120 -62.5 -86.5 3 24.0 -62.7 270 82 407.0 407.0 306.1 407.0 0.00 61 92 16634 -64.5 -87.5 3 23.0 -64.7 271 81 412.8 412.8 306.9 412.8 0.00 62 86 17050 -62.3 -87.3 2 25.0 -62.6 275 77 425.3 425.3 308.3 425.3 0.00 63 77 17731 -64.3 -87.3 3 23.0 -64.5 251 61 434.8 434.8 309.3 434.8 0.00 64 71 18232 -61.9 -87.9 2 26.0 -62.2 263 58 450.1 450.1 310.8 450.1 0.00 65 70 18320 -62.3 -88.3 2 26.0 -62.6 280 55 451.1 451.1 311.0 451.1 0.00 66 64 18870 -64.1 -88.1 2 24.0 -64.4 285 50 458.9 458.9 311.7 458.9 0.00 67 59 19370 -62.1 -88.1 2 26.0 -62.5 269 42 474.2 474.2 313.0 474.2 0.00 68 51 20268 -62.5 -88.5 2 26.0 -62.9 272 32 493.4 493.4 314.5 493.4 0.00 69 50 20390 -63.7 -88.7 2 25.0 -64.1 270 28 493.4 493.4 314.5 493.4 0.00 70 47 20768 -65.3 -90.3 2 25.0 -65.6 266 26 498.3 498.3 314.8 498.4 0.00 71 44 21173 -62.9 -88.9 2 26.0 -63.4 262 24 513.7 513.7 315.9 513.7 0.00 72 42 21458 -64.5 -89.5 2 25.0 -64.9 259 24 516.6 516.6 316.1 516.6 0.00 73 38 22069 -65.3 -90.3 2 25.0 -65.7 261 29 529.6 529.6 316.9 529.6 0.00 74 35 22576 -60.9 -88.9 1 28.0 -61.6 273 28 553.7 553.7 318.3 553.7 0.00 75 34 22755 -62.5 -88.5 2 26.0 -63.1 262 25 554.1 554.1 318.3 554.1 0.00 76 33 22940 -60.9 -88.9 1 28.0 -61.7 254 25 563.1 563.1 318.8 563.1 0.00 77 31 23327 -63.5 -89.5 2 26.0 -64.1 253 32 566.2 566.2 319.0 566.2 0.00 78 30 23530 -59.9 -88.9 1 29.0 -60.8 280 41 581.3 581.3 319.8 581.4 0.00 79 27 24190 -57.7 -86.7 1 29.0 -59.0 302 21 605.3 605.3 320.9 605.4 0.01 80 25 24673 -58.9 -87.9 1 29.0 -60.1 296 22 615.3 615.3 321.3 615.4 0.01 81 25 24673 -57.3 -87.3 1 30.0 -58.7 296 22 619.9 619.9 321.5 620.0 0.01 82 23 25198 -58.1 -87.1 1 29.0 -59.5 290 9 632.5 632.5 322.0 632.6 0.01 83 20 26080 -56.5 -86.5 1 30.0 -58.4 195 4 663.2 663.2 323.2 663.3 0.01 84 15 27919 -53.3 -85.3 1 32.0 -56.5 358 10 730.7 730.8 325.4 730.9 0.02 85 15 27919 -53.9 -84.9 1 31.0 -56.9 358 10 728.7 728.8 325.3 728.9 0.02 86 14 28364 -51.3 -84.3 1 33.0 -55.3 311 11 752.1 752.1 326.0 752.3 0.02 87 13 28846 -51.5 -84.5 1 33.0 -55.6 244 12 767.5 767.5 326.4 767.7 0.02 88 13 28846 -49.9 -83.9 1 34.0 -54.6 244 12 773.0 773.1 326.5 773.3 0.03 89 12 29372 -47.5 -82.5 1 35.0 -53.4 201 12 799.4 799.5 327.3 799.8 0.04 90 11 29946 -48.1 -82.1 1 34.0 -54.0 1 3 817.4 817.4 327.7 817.8 0.04 91 11 29946 -47.9 -82.9 1 35.0 -53.9 1 3 818.1 818.2 327.7 818.5 0.04 92 10 30580 -44.1 -81.1 1 37.0 -52.2 85 7 854.9 855.0 328.5 855.5 0.06 93 9.5 30925 -42.9 -79.9 1 37.0 -51.8 97 7 872.1 872.1 328.9 872.8 0.07 94 8.2 31910 -46.5 -81.5 1 35.0 -54.2 130 5 895.4 895.4 329.4 896.0 0.06 95 7.0 32960 -46.7 -82.7 1 36.0 -55.0 165 4 936.0 936.0 330.1 936.6 0.06 96 6.6 33350 -46.5 -82.5 1 36.0 -55.2 952.7 952.8 330.4 953.4 0.07 TRP 200 11760 -55.5 -73.5 9 18.0 -55.8 265 139 344.9 344.9 295.5 344.9 0.01 WND 226 10976 -52.0 -68.9 11 16.9 -52.3 265 145 338.4 338.4 293.9 338.5 0.02 Sounding variables and indices 1000-500 mb thick: 5348.00 m Freezing level: Surface below freezing Freezing level: 997.00 mb = 186.03 m = 610.32 ft Freezing level: 958.45 mb = 504.84 m = 1656.29 ft Wetbulb zero: Below ground Precipitable water: 0.32 inches Sfc-500 mean rel hum: 46.35 % Est. max temperature: 7.88 C = 46.18 F Sfc-Lift cond lev (LCL): 997.71 mb = 180.37 m = 591.74 ft T: -0.40 C 700-500 lapse rate: 4.42 C/km ThetaE index: 2.81 C Layer 832.0- 813.0 mb Conv cond level (CCL): 719.12 mb = 2767.05 m = 9078.13 ft Mean mixing ratio: 2.89 g/kg Conv temperature: 18.86 C = 65.95 F Cap Strength: 20.09 C Lifted Index: 20.15 C Risk: None Lifted Index @300 mb: 29.07 C Lifted Index @700 mb: 10.26 C Showalter Index: 16.35 C Risk: None Total Totals Index: 30.20 C Risk: None Vertical Totals Index: 15.80 C Cross Totals Index: 14.40 C K Index: -8.70 Risk: None Sweat Index: 193.83 Risk: None Energy Index: 4.70 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 19.52 J/kg Max Up Vert Vel: 6.25 m/s Conv Inhibition (B-): 83641.65 J/kg Cap Strength: 19.92 C Lift Cond Lev (LCL): 906.64 mb = 945.88 m = 3103.24 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 296 at 24 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 1009 98 0 0 -0.0 -0.0 | 116 24 -21.8 10.6 1 1000 162 140 1 -0.6 0.8 | 117 25 -22.4 11.4 2 982 305 25 6 -2.5 -5.4 | 102 25 -24.3 5.2 3 946 610 350 8 1.4 -7.9 | 98 21 -20.4 2.7 4 925 787 340 9 3.1 -8.5 | 97 19 -18.7 2.1 5 910 914 320 9 5.8 -6.9 | 103 16 -16.0 3.7 6 876 1219 250 15 14.1 5.1 | 154 17 -7.7 15.7 7 850 1455 240 21 18.2 10.5 | 170 21 -3.6 21.1 8 843 1524 240 21 18.2 10.5 | 170 21 -3.6 21.1 9 810 1829 235 13 10.6 7.5 | 148 21 -11.1 18.1 10 780 2134 250 16 15.0 5.5 | 157 17 -6.7 16.1 11 750 2438 255 20 19.3 5.2 | 171 16 -2.4 15.8 12 721 2743 265 20 19.9 1.7 | 172 12 -1.8 12.3 13 700 2977 265 22 21.9 1.9 | 181 13 0.2 12.5 14 666 3353 270 24 24.0 -0.0 | 192 11 2.2 10.6 15 639 3658 275 28 27.9 -2.4 | 217 10 6.1 8.2 16 590 4267 270 39 39.0 -0.0 | 238 20 17.2 10.6 17 544 4877 270 50 50.0 -0.0 | 249 30 28.2 10.6 18 500 5510 265 74 73.7 6.4 | 252 55 52.0 17.0 19 461 6096 260 83 81.7 14.4 | 247 65 60.0 25.0 20 400 7130 255 107 103.4 27.7 | 245 90 81.6 38.3 21 373 7620 255 114 110.1 29.5 | 246 97 88.4 40.1 22 341 8230 265 106 105.6 9.2 | 257 86 83.8 19.8 23 300 9110 260 119 117.2 20.7 | 252 100 95.4 31.3 24 298 9144 260 118 116.2 20.5 | 252 99 94.4 31.1 25 250 10320 265 132 131.5 11.5 | 259 112 109.7 22.1 26 226 10976 265 145 144.4 12.6 | 259 125 122.7 23.2 27 216 11278 265 145 144.4 12.6 | 259 125 122.7 23.2 28 200 11760 265 139 138.5 12.1 | 259 119 116.7 22.7 29 162 13106 265 132 131.5 11.5 | 259 112 109.7 22.1 30 150 13600 255 117 113.0 30.3 | 246 100 91.3 40.9 31 140 14021 255 116 112.0 30.0 | 246 99 90.3 40.6 32 115 15240 265 94 93.6 8.2 | 255 74 71.9 18.8 33 104 15850 265 76 75.7 6.6 | 252 57 54.0 17.2 34 100 16120 270 82 82.0 -0.0 | 260 61 60.2 10.6 35 95 16459 270 82 82.0 -0.0 | 260 61 60.2 10.6 36 86 17069 275 77 76.7 -6.7 | 266 55 54.9 3.9 37 82 17374 260 55 54.2 9.6 | 238 38 32.4 20.1 38 78 17678 250 60 56.4 20.5 | 228 47 34.6 31.1 39 74 17983 255 66 63.8 17.1 | 237 50 42.0 27.7 40 70 18288 265 56 55.8 4.9 | 246 37 34.0 15.5 41 70 18320 280 55 54.2 -9.6 | 268 32 32.4 1.0 42 64 18898 285 50 48.3 -12.9 | 275 27 26.5 -2.3 43 61 19202 275 41 40.8 -3.6 | 250 20 19.1 7.0 44 55 19812 255 45 43.5 11.6 | 224 31 21.7 22.2 45 52 20117 275 38 37.9 -3.3 | 246 18 16.1 7.3 46 50 20390 270 28 28.0 -0.0 | 210 12 6.2 10.6 47 43 21336 260 23 22.7 4.0 | 183 15 0.9 14.6 48 39 21946 255 26 25.1 6.7 | 191 18 3.4 17.3 49 37 22250 270 33 33.0 -0.0 | 227 15 11.2 10.6 50 35 22555 275 28 27.9 -2.4 | 217 10 6.1 8.2 51 33 22860 255 24 23.2 6.2 | 185 17 1.4 16.8 52 32 23165 250 28 26.3 9.6 | 193 21 4.6 20.2 53 30 23470 255 35 33.8 9.1 | 212 23 12.0 19.7 54 30 23530 280 41 40.4 -7.1 | 259 19 18.6 3.5 55 29 23774 275 42 41.8 -3.7 | 251 21 20.1 6.9 56 26 24384 315 12 8.5 -8.5 | 99 13 -13.3 2.1 57 25 24689 295 22 19.9 -9.3 | 125 2 -1.8 1.3 58 24 24994 300 17 14.7 -8.5 | 107 7 -7.0 2.1 59 23 25298 285 5 4.8 -1.3 | 119 19 -16.9 9.3 60 22 25603 295 16 14.5 -6.8 | 118 8 -7.3 3.8 61 21 25908 315 12 8.5 -8.5 | 99 13 -13.3 2.1 62 20 26080 195 4 1.0 3.9 | 125 25 -20.7 14.5 63 20 26213 265 10 10.0 0.9 | 134 16 -11.8 11.5 64 19 26518 215 3 1.7 2.5 | 123 24 -20.0 13.1 65 17 27127 300 17 14.7 -8.5 | 107 7 -7.0 2.1 66 16 27432 345 10 2.6 -9.7 | 93 19 -19.2 0.9 67 15 28042 360 10 -0.0 -10.0 | 92 22 -21.8 0.6 68 12 29261 190 13 2.3 12.8 | 140 30 -19.5 23.4 69 12 29566 215 10 5.7 8.2 | 140 25 -16.0 18.8 70 11 29870 0 0 -0.0 -0.0 | 116 24 -21.8 10.6 71 11 30175 5 10 -0.9 -10.0 | 92 23 -22.6 0.6 72 10 30580 85 7 -7.0 -0.6 | 109 30 -28.7 10.0 73 7 32960 165 4 -1.0 3.9 | 122 27 -22.8 14.5 Wind Parameters Mean winds (0-6000m): 266.0 at 32.3 knts Storm direction: 296.0 at 24.2 knts Shear (0-3000m) pos: 1.8 neg: 3.3 tot: 5.1 10-3/s Storm rel Dir Shear (0-3000m): 68.1 deg Storm rel helicity (0-3000m) pos: 120.4 neg: -96.2 tot: 24.1 m^2/s^2 ave: 8.0 10^-3 m/s^2 rel: 0.21 Storm rel vorticity (0-3000m) horiz: 10.7 stream: 2.3 10^-3/s Energy-Hel index: 0.01 Bulk Rich Number: 0.13 Bulk Shear: 152.58 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 11 5 104 23| 0.0 8.2 8.2| 0.0 -53.5 -53.5 -107.1 -0.61| 13.6 -8.3 1000 338 7 101 19| 0.0 6.5 6.5| 34.9 -54.9 -20.0 -20.0 0.03| 13.9 0.5 1500 279 11 128 14| 0.0 6.5 6.5| 81.7 -66.0 15.7 10.5 0.22| 14.6 3.3 2000 263 12 140 16| 1.1 4.9 6.0| 91.7 -96.2 -4.5 -2.3 0.12| 13.4 1.6 2500 260 13 146 16| 1.5 3.9 5.4|111.5 -96.2 15.3 6.1 0.18| 12.0 2.2 3000 261 15 150 15| 1.8 3.3 5.1|120.4 -96.2 24.1 8.0 0.21| 10.7 2.3 4000 266 18 162 12| 2.1 3.5 5.6|152.2 -96.2 56.0 14.0 0.31| 9.9 3.0 5000 268 24 189 12| 1.6 5.1 6.7|197.6 -96.2 101.4 20.3 0.30| 10.3 3.1 6000 266 32 219 17| 1.4 6.5 7.9|202.7-171.5 31.2 5.2 0.20| 10.9 2.2 Wrote GIF file: /home/apache/climate/data/raob//KIAD/skewt/KIAD.skewt.20251207.12.gif