UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025122412.upa.cvt Date: 1200Z 24 DEC 25 Searching for KIAD... Searching the city database file for: KIAD ... Date:1200Z 24 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 12.4 3.4 54 9.0 7.9 320 9 284.9 285.7 280.7 298.5 4.84 1 1000 157 12.0 1.0 47 11.0 6.8 320 16 285.1 285.9 279.9 296.8 4.11 2 992 224 11.8 0.8 47 11.0 6.6 320 22 285.6 286.3 280.1 297.2 4.08 3 927 786 6.8 -1.2 57 8.0 3.2 315 39 286.1 286.7 280.0 296.9 3.77 4 925 804 6.6 -2.4 53 9.0 2.7 315 39 286.1 286.7 279.6 296.0 3.46 5 915 893 5.8 -2.2 56 8.0 2.3 315 40 286.1 286.7 279.7 296.3 3.55 6 888 1137 4.0 -6.0 48 10.0 0.0 319 43 286.7 287.2 279.0 294.7 2.75 7 879 1220 3.6 -9.4 38 13.0 -1.2 320 44 287.1 287.5 278.3 293.4 2.13 8 875 1257 3.6 -10.4 35 14.0 -1.4 320 45 287.5 287.9 278.3 293.4 1.98 9 866 1341 3.2 -12.8 30 16.0 -2.2 320 48 288.0 288.2 278.1 292.9 1.65 10 858 1417 4.2 -22.8 12 27.0 -3.1 320 50 289.8 289.9 277.7 292.0 0.71 11 855 1445 5.4 320 51 291.3 12 850 1493 5.2 -42.8 2 48.0 -3.7 320 52 291.6 291.6 277.6 291.9 0.10 13 837 1618 4.8 322 52 292.5 14 757 2427 -0.9 -40.9 3 40.0 -7.9 320 53 294.8 294.8 279.2 295.3 0.14 15 743 2577 0.2 -37.8 4 38.0 -7.2 316 57 297.6 297.6 280.6 298.3 0.20 16 726 2762 -0.3 -42.3 2 42.0 -7.8 310 61 299.0 299.0 281.1 299.5 0.13 17 705 2996 0.0 314 65 301.9 18 700 3053 -0.3 -47.3 1 47.0 -8.1 315 66 302.2 302.2 282.4 302.4 0.08 19 632 3861 -6.9 -49.9 2 43.0 -12.8 315 69 303.6 303.6 282.9 303.8 0.06 20 622 3985 -7.1 -40.1 5 33.0 -12.7 315 71 304.7 304.8 283.5 305.4 0.19 21 613 4099 -6.7 -27.7 17 21.0 -11.7 315 73 306.5 306.6 284.8 308.6 0.64 22 599 4279 -7.5 -22.5 29 15.0 -11.6 315 77 307.6 307.8 285.7 311.1 1.05 23 591 4384 -7.7 -25.7 22 18.0 -12.2 314 76 308.5 308.7 285.8 311.2 0.80 24 580 4529 -8.9 -27.9 20 19.0 -13.3 313 75 308.8 308.9 285.7 311.1 0.66 25 562 4773 -11.1 -26.1 28 15.0 -14.6 311 73 309.0 309.2 285.9 311.7 0.81 26 541 5064 -13.1 -30.1 23 17.0 -16.6 310 74 310.0 310.1 286.0 312.0 0.58 27 518 5394 -15.5 -25.5 42 10.0 -17.8 310 78 311.0 311.2 286.8 314.1 0.93 28 500 5660 -17.1 -28.1 38 11.0 -19.4 310 74 312.2 312.3 287.0 314.8 0.76 29 498 5690 -17.3 -28.3 38 11.0 -19.6 310 74 312.3 312.4 287.1 314.9 0.75 30 495 5735 -17.3 -32.3 26 15.0 -20.0 309 73 312.8 312.9 286.9 314.6 0.51 31 476 6027 -19.1 -33.1 28 14.0 -21.5 306 72 314.1 314.2 287.4 315.9 0.49 32 440 6605 -24.3 -35.3 35 11.0 -25.9 309 72 314.7 314.8 287.5 316.2 0.43 33 426 6839 -26.3 -33.3 52 7.0 -27.3 308 75 315.1 315.2 287.8 317.0 0.54 34 424 6873 -26.5 -34.5 47 8.0 -27.6 307 75 315.2 315.3 287.8 317.0 0.48 35 408 7149 -28.7 -35.7 51 7.0 -29.6 306 79 315.9 316.0 287.9 317.5 0.45 36 400 7290 -30.1 -35.1 62 5.0 -30.7 305 81 315.9 316.0 287.9 317.6 0.48 37 388 7506 -32.1 -34.9 76 2.8 -32.4 305 82 316.0 316.1 288.0 317.8 0.51 38 385 7561 -32.3 -37.3 61 5.0 -32.9 305 83 316.4 316.5 288.1 317.9 0.40 39 374 7765 -33.7 -40.7 49 7.0 -34.4 306 84 317.2 317.3 288.2 318.3 0.29 40 367 7897 -34.7 -39.7 60 5.0 -35.2 306 85 317.6 317.7 288.3 318.8 0.33 41 362 7993 -35.1 -42.1 49 7.0 -35.7 306 85 318.3 318.4 288.5 319.3 0.26 42 350 8228 -36.5 -44.5 43 8.0 -37.1 307 87 319.5 319.6 288.8 320.3 0.21 43 336 8510 -38.7 -44.7 53 6.0 -39.1 309 89 320.3 320.3 289.0 321.1 0.21 44 320 8843 -41.1 -48.1 47 7.0 -41.5 310 91 321.4 321.5 289.3 322.0 0.15 45 318 8886 -41.5 -47.5 52 6.0 -41.9 311 92 321.5 321.5 289.4 322.1 0.16 46 305 9168 -43.1 -51.1 41 8.0 -43.5 315 103 323.1 323.1 289.8 323.5 0.11 47 301 9257 -42.3 -50.3 41 8.0 -42.8 315 109 325.4 325.5 290.5 325.9 0.13 48 300 9280 -42.3 -50.3 41 8.0 -42.8 315 111 325.7 325.8 290.6 326.2 0.13 49 278 9791 -46.1 -56.1 31 10.0 -46.4 317 124 327.4 327.4 291.0 327.7 0.07 50 266 10083 -48.5 -57.5 34 9.0 -48.8 318 131 328.1 328.1 291.2 328.3 0.06 51 263 10157 -48.9 -58.9 30 10.0 -49.2 319 133 328.6 328.6 291.4 328.8 0.05 52 261 10208 -48.3 -62.3 18 14.0 -48.7 319 134 330.2 330.2 291.8 330.3 0.03 53 253 10412 -49.7 -64.7 16 15.0 -50.0 320 140 331.0 331.1 292.0 331.1 0.03 54 251 10464 -50.2 -65.2 15 15.0 -50.5 320 141 331.0 331.0 292.0 331.1 0.02 55 250 10490 -50.5 -65.5 15 15.0 -50.8 320 141 331.0 331.0 292.0 331.1 0.02 56 238 10807 -53.5 -63.5 28 10.0 -53.7 319 138 331.2 331.2 292.0 331.3 0.03 57 234 10916 -54.3 -64.3 28 10.0 -54.5 318 137 331.6 331.6 292.2 331.7 0.03 58 215 11454 -56.3 -69.3 18 13.0 -56.5 314 127 336.6 336.6 293.5 336.6 0.02 59 200 11910 -58.5 -70.5 20 12.0 -58.6 310 118 340.1 340.1 294.4 340.2 0.01 60 182 12500 -61.7 -74.7 16 13.0 -61.8 305 123 344.2 344.2 295.3 344.2 0.01 61 150 13700 -61.7 -81.7 5 20.0 -61.9 305 104 363.8 363.8 299.4 363.8 0.00 62 100 16190 -66.5 -88.5 3 22.0 -66.6 315 84 399.2 399.2 305.1 399.2 0.00 63 93 16629 -68.1 -89.1 3 21.0 -68.2 312 86 404.5 404.5 305.8 404.5 0.00 64 79 17621 -63.9 -87.9 2 24.0 -64.1 308 71 432.5 432.5 309.1 432.5 0.00 65 73 18105 -64.9 -87.9 3 23.0 -65.1 291 45 440.2 440.2 309.9 440.2 0.00 66 70 18360 -67.1 -89.1 3 22.0 -67.2 270 40 440.8 440.8 310.0 440.8 0.00 67 66 18712 -69.5 -89.5 4 20.0 -69.6 267 41 443.1 443.1 310.2 443.1 0.00 68 65 18803 -68.1 -89.1 3 21.0 -68.2 266 42 448.1 448.1 310.7 448.1 0.00 69 58 19480 -70.9 -89.9 4 19.0 -71.0 310 18 456.6 456.6 311.5 456.6 0.00 70 56 19688 -68.7 -89.7 3 21.0 -68.9 294 25 466.2 466.2 312.3 466.2 0.00 71 51 20243 -71.3 -91.3 4 20.0 -71.4 300 35 472.8 472.8 312.8 472.8 0.00 72 50 20360 -70.5 -90.5 4 20.0 -70.6 305 36 477.4 477.4 313.2 477.4 0.00 73 47 20729 -67.7 -89.7 3 22.0 -67.9 316 40 492.6 492.6 314.4 492.6 0.00 74 45 20991 -67.9 -90.9 2 23.0 -68.1 324 43 498.3 498.3 314.8 498.3 0.00 75 44 21127 -64.7 -89.7 2 25.0 -65.1 325 38 509.3 509.3 315.6 509.3 0.00 76 42 21410 -66.1 -90.1 2 24.0 -66.4 331 26 512.7 512.7 315.8 512.7 0.00 77 41 21557 -62.3 -89.3 2 27.0 -62.8 340 18 525.7 525.7 316.6 525.7 0.00 78 40 21709 -63.1 -90.1 1 27.0 -63.6 323 18 527.4 527.4 316.8 527.4 0.00 79 39 21866 -60.9 -88.9 1 28.0 -61.6 283 24 536.8 536.8 317.3 536.8 0.00 80 36 22359 -63.9 -89.9 2 26.0 -64.4 279 29 541.5 541.5 317.6 541.5 0.00 81 33 22894 -62.3 -90.3 1 28.0 -63.0 295 31 559.3 559.3 318.6 559.4 0.00 82 30 23480 -64.1 -90.1 2 26.0 -64.7 290 39 569.9 569.9 319.2 569.9 0.00 83 29 23688 -64.3 -90.3 2 26.0 -64.8 283 41 574.9 574.9 319.4 574.9 0.00 84 28 23904 -63.1 -91.1 1 28.0 -63.8 282 38 584.0 584.0 319.9 584.0 0.00 85 27 24130 -60.7 -89.7 1 29.0 -61.6 281 33 596.9 596.9 320.5 596.9 0.00 86 26 24367 -59.3 -88.3 1 29.0 -60.4 266 35 607.3 607.3 320.9 607.4 0.01 87 23 25134 -60.7 -88.7 1 28.0 -61.8 253 34 624.9 624.9 321.7 624.9 0.01 88 22 25413 -58.9 -88.9 1 30.0 -60.3 254 31 638.2 638.2 322.2 638.3 0.01 89 20 26010 -60.9 -89.9 1 29.0 -62.1 265 44 649.8 649.8 322.7 649.8 0.01 90 19 26330 -58.3 -88.3 1 30.0 -59.9 266 46 667.4 667.4 323.3 667.5 0.01 91 18 26669 -59.5 -88.5 1 29.0 -61.0 267 48 674.1 674.1 323.6 674.1 0.01 92 18 26669 -58.9 -88.9 1 30.0 -60.5 267 48 675.9 676.0 323.6 676.0 0.01 93 17 27029 -55.9 -87.9 1 32.0 -58.2 269 51 696.7 696.7 324.3 696.8 0.01 94 17 27029 -56.5 -87.5 1 31.0 -58.7 269 51 694.8 694.8 324.3 694.9 0.01 95 16 27415 -53.9 -85.9 1 32.0 -56.8 270 53 715.4 715.4 324.9 715.5 0.02 96 15 27827 -55.9 -86.9 1 31.0 -58.5 269 51 722.1 722.1 325.1 722.2 0.01 97 13 28739 -54.7 -86.7 1 32.0 -57.9 266 46 756.4 756.4 326.1 756.6 0.02 98 13 28739 -53.3 -85.3 1 32.0 -56.9 266 46 761.3 761.3 326.3 761.4 0.02 99 12 29252 -54.9 -85.9 1 31.0 -58.2 260 60 773.2 773.2 326.5 773.4 0.02 100 12 29252 -53.7 -85.7 1 32.0 -57.3 260 60 777.5 777.5 326.7 777.7 0.02 101 10 30420 -54.5 -86.5 1 32.0 -58.3 260 57 816.1 816.1 327.6 816.3 0.02 102 8.4 31542 -51.9 -84.9 1 33.0 -57.2 265 69 868.0 868.1 328.8 868.4 0.03 103 8.2 31698 -52.3 -85.3 1 33.0 -57.5 266 70 872.5 872.5 328.9 872.8 0.03 104 7.9 31940 -50.3 -84.3 1 34.0 -56.5 267 73 889.8 889.8 329.2 890.2 0.04 105 7.5 32278 -51.3 -84.3 1 33.0 -57.2 268 76 899.1 899.1 329.4 899.5 0.04 106 7.0 32730 -47.3 -83.3 1 36.0 -55.4 270 81 933.5 933.5 330.1 934.1 0.05 107 6.9 32825 -46.7 -82.7 1 36.0 -55.1 939.9 939.9 330.2 940.5 0.06 108 6.4 33323 -47.9 -82.9 1 35.0 -56.0 955.2 955.2 330.4 955.9 0.06 TRP 182 12500 -61.7 -74.7 16 13.0 -61.8 305 123 344.2 344.2 295.3 344.2 0.01 WND 251 10464 -50.2 -65.2 15 15.0 -50.5 320 141 331.0 331.0 292.0 331.1 0.02 Sounding variables and indices 1000-500 mb thick: 5503.00 m Freezing level: 769.63 mb = 2299.71 m = 7544.90 ft Freezing level: 745.55 mb = 2549.41 m = 8364.10 ft Freezing level: 736.20 mb = 2650.53 m = 8695.85 ft Freezing level: 705.00 mb = 2996.12 m = 9829.67 ft Freezing level: 705.00 mb = 2996.12 m = 9829.67 ft Wetbulb zero: 887.85 mb = 1138.84 m = 3736.30 ft Precipitable water: 0.28 inches Sfc-500 mean rel hum: 25.96 % Est. max temperature: 17.28 C = 63.10 F Sfc-Lift cond lev (LCL): 879.56 mb = 1215.08 m = 3986.45 ft T: 3.62 C 700-500 lapse rate: 6.44 C/km ThetaE index: 4.35 C Layer 888.0- 837.0 mb Conv cond level (CCL): 644.22 mb = 3709.23 m = 12169.24 ft Mean mixing ratio: 3.90 g/kg Conv temperature: 30.88 C = 87.58 F Cap Strength: 13.48 C Lifted Index: 14.05 C Risk: None Lifted Index @300 mb: 20.49 C Lifted Index @700 mb: 10.93 C Showalter Index: 16.89 C Risk: None Total Totals Index: -3.40 C Risk: None Vertical Totals Index: 22.30 C Cross Totals Index: -25.70 C K Index: -67.50 Risk: None Sweat Index: 178.00 Risk: None Energy Index: 4.76 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 2.56 J/kg Max Up Vert Vel: 2.26 m/s Conv Inhibition (B-): 68695.66 J/kg Cap Strength: 13.76 C Lift Cond Lev (LCL): 828.46 mb = 1701.10 m = 5580.96 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 344 at 45 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 98 320 9 5.8 -6.9 | 170 37 -6.2 36.4 1 1000 157 320 16 10.3 -12.3 | 177 31 -1.7 31.0 2 982 305 320 29 18.6 -22.2 | 197 22 6.6 21.0 3 947 610 315 36 25.5 -25.5 | 217 22 13.4 17.8 4 925 804 315 39 27.6 -27.6 | 225 22 15.6 15.7 5 913 914 315 40 28.3 -28.3 | 227 22 16.3 15.0 6 879 1219 320 44 28.3 -33.7 | 240 19 16.3 9.6 7 850 1493 320 52 33.4 -39.8 | 261 22 21.4 3.4 8 815 1829 325 51 29.3 -41.8 | 265 17 17.2 1.5 9 785 2134 325 52 29.8 -42.6 | 268 18 17.8 0.7 10 756 2438 320 53 34.1 -40.6 | 263 22 22.1 2.7 11 728 2743 310 61 46.7 -39.2 | 263 35 34.7 4.0 12 700 3053 315 66 46.7 -46.7 | 276 35 34.7 -3.4 13 647 3658 315 65 46.0 -46.0 | 275 34 33.9 -2.7 14 598 4267 315 77 54.4 -54.4 | 285 44 42.4 -11.2 15 553 4877 310 72 55.2 -46.3 | 274 43 43.1 -3.0 16 511 5486 310 79 60.5 -50.8 | 279 49 48.5 -7.5 17 500 5660 310 74 56.7 -47.6 | 276 45 44.7 -4.3 18 471 6096 305 71 58.2 -40.7 | 267 46 46.1 2.5 19 452 6401 310 69 52.9 -44.4 | 272 41 40.8 -1.1 20 400 7290 305 81 66.4 -46.5 | 273 54 54.3 -3.2 21 381 7620 305 83 68.0 -47.6 | 274 56 56.0 -4.3 22 320 8839 310 91 69.7 -58.5 | 285 60 57.7 -15.2 23 306 9144 315 101 71.4 -71.4 | 295 66 59.4 -28.2 24 300 9280 315 111 78.5 -78.5 | 298 75 66.5 -35.2 25 251 10464 320 141 90.6 -108.0 | 309 102 78.6 -64.8 26 250 10490 320 141 90.6 -108.0 | 309 102 78.6 -64.8 27 243 10668 320 141 90.6 -108.0 | 309 102 78.6 -64.8 28 200 11910 310 118 90.4 -75.8 | 293 85 78.4 -32.6 29 182 12497 305 114 93.4 -65.4 | 285 84 81.4 -22.1 30 182 12500 305 123 100.8 -70.5 | 287 93 88.7 -27.3 31 165 13106 315 120 84.9 -84.9 | 300 84 72.8 -41.6 32 150 13700 305 104 85.2 -59.7 | 283 75 73.2 -16.4 33 150 13716 310 100 76.6 -64.3 | 288 68 64.6 -21.0 34 117 15240 300 111 96.1 -55.5 | 278 85 84.1 -12.2 35 100 16190 315 84 59.4 -59.4 | 289 50 47.4 -16.1 36 96 16459 315 85 60.1 -60.1 | 289 51 48.1 -16.8 37 87 17069 305 90 73.7 -51.6 | 278 62 61.7 -8.4 38 82 17374 310 83 63.6 -53.4 | 281 53 51.6 -10.1 39 74 17983 305 54 44.2 -31.0 | 249 34 32.2 12.3 40 71 18288 270 31 31.0 -0.0 | 204 47 19.0 43.3 41 70 18360 270 40 40.0 -0.0 | 213 52 28.0 43.3 42 64 18898 265 42 41.8 3.7 | 212 56 29.8 46.9 43 61 19202 265 24 23.9 2.1 | 195 47 11.9 45.4 44 58 19507 315 17 12.0 -12.0 | 180 31 0.0 31.2 45 55 19812 280 30 29.5 -5.2 | 205 42 17.5 38.0 46 50 20360 305 36 29.5 -20.6 | 218 29 17.5 22.6 47 45 21031 325 43 24.7 -35.2 | 238 15 12.6 8.0 48 43 21336 325 30 17.2 -24.6 | 196 19 5.2 18.7 49 41 21641 345 15 3.9 -14.5 | 164 30 -8.1 28.8 50 39 21946 265 27 26.9 2.4 | 198 48 14.9 45.6 51 33 22860 295 31 28.1 -13.1 | 208 34 16.1 30.2 52 30 23480 290 39 36.6 -13.3 | 219 39 24.6 29.9 53 29 23774 280 42 41.4 -7.3 | 219 46 29.3 36.0 54 27 24079 285 33 31.9 -8.5 | 210 40 19.9 34.7 55 26 24384 265 35 34.9 3.1 | 206 52 22.9 46.3 56 22 25298 250 34 31.9 11.6 | 200 58 19.9 54.9 57 21 25603 260 26 25.6 4.5 | 196 50 13.6 47.8 58 20 26010 265 44 43.8 3.8 | 214 57 31.8 47.1 59 16 27432 270 53 53.0 -0.0 | 223 60 41.0 43.3 60 13 28956 265 45 44.8 3.9 | 215 57 32.8 47.2 61 12 29261 260 60 59.1 10.4 | 221 71 47.1 53.7 62 10 30175 260 46 45.3 8.0 | 213 61 33.3 51.2 63 10 30420 260 57 56.1 9.9 | 220 69 44.1 53.2 64 7 32730 270 81 81.0 -0.0 | 238 81 69.0 43.3 Wind Parameters Mean winds (0-6000m): 314.5 at 59.9 knts Storm direction: 344.5 at 44.9 knts Shear (0-3000m) pos: 4.4 neg: 5.9 tot: 10.3 10-3/s Storm rel Dir Shear (0-3000m): 105.3 deg Storm rel helicity (0-3000m) pos: 305.9 neg: -8.6 tot: 297.3 m^2/s^2 ave: 99.1 10^-3 m/s^2 rel: 0.60 Storm rel vorticity (0-3000m) horiz: 12.7 stream: 7.6 10^-3/s Energy-Hel index: 0.00 Bulk Rich Number: 0.02 Bulk Shear: 144.64 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 ------------------------------------------------------------------------------- 500 318 27 194 24| 0.0 27.5 27.5|140.2 0.0 140.2 280.4 0.75| 28.1 21.1 1000 317 33 209 22| 3.6 13.8 17.3|179.5 0.0 179.5 179.5 0.79| 17.9 14.1 1500 318 38 222 20| 5.7 9.2 14.9|230.7 0.0 230.7 153.8 0.80| 15.9 12.7 2000 320 41 232 19| 4.6 6.9 11.5|239.0 0.0 239.0 119.5 0.77| 12.9 10.0 2500 320 44 239 19| 3.7 7.1 10.7|240.0 -7.0 233.0 93.2 0.61| 12.6 7.7 3000 319 47 247 21| 4.4 5.9 10.3|305.9 -8.6 297.3 99.1 0.60| 12.7 7.6 4000 317 52 258 24| 3.3 5.4 8.7|356.0 -13.4 342.6 85.7 0.59| 10.7 6.3 5000 316 57 265 27| 2.7 4.6 7.2|386.2-101.1 285.1 57.0 0.46| 9.9 4.5 6000 314 60 268 31| 2.2 3.7 5.9|413.9-215.2 198.7 33.1 0.33| 9.6 3.2 Wrote GIF file: /home/apache/climate/data/raob//KIAD/skewt/KIAD.skewt.20251224.12.gif