UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025120812.upa.cvt Date: 1200Z 8 DEC 25 Searching for KIAD... Searching the city database file for: KIAD ... Date:1200Z 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 1011 98 2.8 -3.2 65 6.0 0.5 360 9 275.1 275.6 273.1 283.3 2.98 1 1000 175 1.6 -4.4 64 6.0 -0.6 350 16 274.8 275.2 272.5 282.3 2.75 2 979 346 0.0 -5.0 69 5.0 -1.8 357 23 274.8 275.3 272.5 282.2 2.69 3 939 679 -1.9 -6.9 69 5.0 -3.6 6 22 276.2 276.6 272.9 282.9 2.42 4 925 798 -3.1 -7.5 72 4.4 -4.6 360 21 276.1 276.5 272.7 282.7 2.35 5 914 893 -3.7 -7.1 77 3.4 -4.8 356 19 276.5 276.9 273.1 283.3 2.45 6 895 1059 -4.5 -6.1 89 1.6 -5.1 348 18 277.3 277.8 273.9 284.9 2.70 7 856 1409 -6.1 -6.5 97 0.4 -6.2 321 18 279.2 279.7 275.0 286.9 2.74 8 851 1455 -4.7 -6.0 91 1.3 -5.2 316 18 281.1 281.6 276.3 289.2 2.87 9 850 1464 -4.9 -6.1 91 1.2 -5.3 315 18 281.0 281.5 276.2 289.1 2.85 10 836 1595 -4.1 -5.9 87 1.8 -4.8 310 17 283.2 283.7 277.4 291.6 2.94 11 826 1690 -4.5 -6.4 87 1.9 -5.2 306 17 283.7 284.2 277.6 291.9 2.86 12 823 1718 -3.5 -8.5 68 5.0 -5.3 305 17 285.1 285.5 277.7 292.2 2.44 13 820 1747 -3.3 -9.3 63 6.0 -5.4 303 16 285.6 286.0 277.8 292.3 2.30 14 737 2581 -10.1 -11.3 91 1.2 -10.5 270 19 287.0 287.4 278.4 293.5 2.18 15 719 2771 -10.7 -11.1 97 0.4 -10.8 276 21 288.4 288.8 279.1 295.1 2.28 16 710 2868 -11.1 -12.4 90 1.3 -11.5 278 23 289.0 289.4 279.1 295.2 2.08 17 700 2977 -11.7 -12.2 96 0.5 -11.9 280 25 289.5 289.9 279.5 295.9 2.14 18 694 3043 -11.9 -12.1 98 0.2 -12.0 279 27 290.0 290.4 279.8 296.5 2.18 19 668 3334 -12.5 -13.8 90 1.3 -12.9 272 34 292.5 292.9 280.7 298.5 1.97 20 655 3484 -12.5 -14.3 86 1.8 -13.0 269 38 294.2 294.5 281.4 300.1 1.93 21 636 3707 -13.9 -15.8 86 1.9 -14.5 265 42 295.1 295.4 281.5 300.5 1.75 22 629 3791 -14.7 -17.6 79 2.9 -15.4 264 40 295.1 295.4 281.3 299.8 1.52 23 604 4097 -16.3 -31.3 26 15.0 -18.8 262 33 296.7 296.8 280.6 298.2 0.46 24 600 4146 -16.5 -32.5 24 16.0 -19.1 261 31 297.0 297.1 280.6 298.4 0.42 25 544 4875 -21.3 -37.3 22 16.0 -23.4 250 37 299.8 299.8 281.6 300.7 0.28 26 538 4956 -21.9 -35.9 27 14.0 -23.7 251 38 300.0 300.0 281.8 301.1 0.33 27 536 4984 -21.9 -33.9 33 12.0 -23.6 252 39 300.3 300.4 282.0 301.7 0.41 28 530 5066 -22.7 -34.7 33 12.0 -24.3 253 40 300.3 300.4 282.0 301.6 0.38 29 527 5108 -23.1 -32.1 44 9.0 -24.4 254 41 300.3 300.4 282.1 302.0 0.49 30 522 5177 -23.7 -33.7 39 10.0 -25.1 255 42 300.4 300.5 282.1 301.8 0.42 31 521 5191 -23.9 -31.9 48 8.0 -25.1 255 42 300.3 300.4 282.2 302.0 0.51 32 520 5205 -24.1 -28.8 65 4.7 -24.9 255 42 300.3 300.4 282.4 302.5 0.68 33 506 5404 -25.3 -28.7 73 3.4 -25.8 259 46 301.2 301.3 282.8 303.5 0.71 34 500 5490 -25.1 -28.2 75 3.1 -25.6 260 47 302.4 302.6 283.4 304.9 0.75 35 492 5608 -24.5 -27.4 77 2.9 -25.0 262 49 304.6 304.7 284.3 307.3 0.82 36 473 5895 -25.9 -29.5 72 3.6 -26.5 262 54 306.3 306.4 284.8 308.6 0.70 37 457 6144 -27.7 -30.8 75 3.1 -28.2 255 59 307.1 307.2 285.0 309.2 0.64 38 435 6498 -30.5 -33.1 78 2.6 -30.8 251 64 307.9 308.0 285.2 309.7 0.54 39 400 7090 -35.5 -38.8 72 3.3 -35.8 245 72 308.9 308.9 285.3 310.0 0.33 40 395 7177 -36.3 -39.6 71 3.3 -36.6 245 72 308.9 309.0 285.3 310.0 0.31 41 376 7516 -39.1 -44.1 59 5.0 -39.4 248 76 309.6 309.6 285.4 310.3 0.20 42 375 7534 -39.3 -43.8 62 4.5 -39.6 248 76 309.6 309.6 285.4 310.3 0.21 43 374 7552 -39.3 -45.3 53 6.0 -39.7 249 77 309.8 309.8 285.5 310.5 0.18 44 370 7625 -40.1 -44.2 65 4.1 -40.4 250 78 309.7 309.7 285.5 310.4 0.20 45 362 7774 -41.5 -44.9 69 3.4 -41.7 250 81 309.8 309.8 285.5 310.5 0.19 46 359 7830 -42.1 -46.5 62 4.4 -42.3 250 82 309.7 309.7 285.4 310.3 0.16 47 357 7868 -42.3 -49.3 46 7.0 -42.6 250 82 309.9 310.0 285.4 310.4 0.12 48 352 7962 -43.3 -47.7 62 4.4 -43.5 250 84 309.8 309.9 285.4 310.4 0.15 49 346 8077 -44.5 -48.4 65 3.9 -44.7 250 86 309.7 309.8 285.4 310.2 0.14 50 344 8116 -44.7 -50.7 51 6.0 -44.9 250 87 310.0 310.0 285.4 310.4 0.11 51 328 8432 -47.5 -51.1 66 3.6 -47.6 250 93 310.4 310.4 285.6 310.8 0.11 52 326 8472 -47.7 -52.2 60 4.5 -47.9 250 93 310.6 310.7 285.7 311.0 0.09 53 324 8513 -47.9 -51.7 65 3.8 -48.0 250 94 310.9 310.9 285.8 311.3 0.10 54 323 8533 -47.9 -51.8 64 3.9 -48.0 250 95 311.2 311.2 285.9 311.6 0.10 55 322 8553 -47.1 -60.1 21 13.0 -47.4 250 95 312.6 312.6 286.3 312.7 0.04 56 300 9020 -47.5 -65.5 11 18.0 -47.9 250 107 318.4 318.4 288.2 318.5 0.02 57 253 10142 -48.6 -73.2 4 24.5 -49.1 250 124 332.6 332.6 292.4 332.7 0.01 58 250 10220 -48.7 -73.7 4 25.0 -49.1 250 122 333.7 333.7 292.7 333.7 0.01 59 200 11680 -52.1 -79.1 2 27.0 -52.5 250 110 350.3 350.3 296.7 350.3 0.00 60 150 13520 -57.3 -84.3 2 27.0 -57.6 255 114 371.4 371.4 300.8 371.4 0.00 61 100 16050 -59.1 -86.1 2 27.0 -59.5 265 66 413.5 413.5 306.9 413.5 0.00 62 93 16502 -60.1 -87.1 2 27.0 -60.4 257 60 420.2 420.2 307.7 420.2 0.00 63 81 17349 -65.9 -87.9 3 22.0 -66.1 250 66 425.3 425.3 308.3 425.3 0.00 64 71 18153 -62.3 -88.3 2 26.0 -62.6 260 48 449.3 449.3 310.8 449.3 0.00 65 70 18240 -62.5 -88.5 2 26.0 -62.8 260 47 450.7 450.7 310.9 450.7 0.00 66 67 18510 -62.9 -88.9 2 26.0 -63.2 267 48 455.5 455.5 311.4 455.5 0.00 67 65 18697 -61.7 -88.7 2 27.0 -62.1 268 46 462.1 462.1 312.0 462.1 0.00 68 64 18793 -62.1 -89.1 2 27.0 -62.4 269 45 463.3 463.3 312.1 463.3 0.00 69 59 19295 -61.7 -89.7 1 28.0 -62.1 260 47 475.1 475.1 313.1 475.1 0.00 70 57 19510 -59.5 -88.5 1 29.0 -60.0 255 48 484.8 484.8 313.8 484.8 0.00 71 51 20198 -63.7 -89.7 2 26.0 -64.1 257 35 490.6 490.6 314.2 490.6 0.00 72 50 20320 -63.1 -90.1 1 27.0 -63.5 255 36 494.8 494.8 314.6 494.8 0.00 73 47 20700 -64.3 -90.3 2 26.0 -64.7 255 39 500.7 500.7 315.0 500.8 0.00 74 43 21250 -61.1 -89.1 1 28.0 -61.7 266 35 521.5 521.5 316.4 521.5 0.00 75 37 22182 -62.7 -90.7 1 28.0 -63.3 271 33 540.3 540.3 317.5 540.3 0.00 76 33 22894 -59.3 -89.3 1 30.0 -60.2 248 27 567.3 567.3 319.0 567.3 0.00 77 31 23285 -60.3 -89.3 1 29.0 -61.2 265 34 574.8 574.8 319.4 574.9 0.00 78 30 23490 -59.5 -89.5 1 30.0 -60.4 265 37 582.4 582.4 319.8 582.5 0.00 79 27 24152 -59.1 -89.1 1 30.0 -60.2 293 34 601.4 601.4 320.7 601.4 0.01 80 27 24152 -57.9 -88.9 1 31.0 -59.2 293 34 604.7 604.7 320.8 604.8 0.01 81 25 24637 -59.5 -89.5 1 30.0 -60.6 272 26 613.6 613.6 321.2 613.6 0.01 82 20 26050 -55.3 -87.3 1 32.0 -57.5 265 26 666.9 666.9 323.3 667.0 0.01 83 18 26722 -55.9 -87.9 1 32.0 -58.1 269 30 685.4 685.4 324.0 685.5 0.01 84 16 27481 -50.9 -85.9 1 35.0 -54.7 268 24 725.2 725.2 325.2 725.3 0.02 85 14 28348 -52.7 -85.7 1 33.0 -56.2 257 16 747.3 747.3 325.8 747.5 0.02 86 13 28830 -49.9 -84.9 1 35.0 -54.6 280 17 773.0 773.1 326.5 773.2 0.02 87 12 29354 -50.3 -85.3 1 35.0 -55.1 274 10 789.5 789.5 327.0 789.7 0.02 88 10 30550 -48.3 -84.3 1 36.0 -54.5 285 8 839.3 839.3 328.2 839.6 0.03 89 9.7 30751 -47.7 -84.7 1 37.0 -54.3 279 8 848.9 848.9 328.4 849.1 0.03 90 9.4 30958 -49.1 -85.1 1 36.0 -55.2 274 8 851.2 851.2 328.4 851.5 0.03 91 8.6 31546 -46.1 -84.1 1 38.0 -53.9 258 9 884.8 884.8 329.1 885.2 0.04 92 7.9 32109 -48.1 -84.1 1 36.0 -55.3 242 9 898.6 898.6 329.4 899.0 0.04 93 7.2 32723 -46.3 -84.3 1 38.0 -54.7 225 10 930.1 930.2 330.0 930.6 0.04 94 7.0 32910 -47.1 -84.1 1 37.0 -55.2 220 10 934.3 934.4 330.1 934.8 0.05 95 6.8 33101 -48.5 -84.5 1 36.0 -56.1 936.3 936.3 330.1 936.8 0.05 96 6.5 33398 -48.1 -85.1 1 37.0 -56.1 950.1 950.2 330.4 950.6 0.04 TRP 324 8513 -47.9 -51.7 65 3.8 -48.0 250 94 310.9 310.9 285.8 311.3 0.10 WND 253 10142 -48.6 -73.2 4 24.5 -49.1 250 124 332.6 332.6 292.4 332.7 0.01 Sounding variables and indices 1000-500 mb thick: 5315.00 m Freezing level: 979.00 mb = 345.59 m = 1133.80 ft Wetbulb zero: 1006.17 mb = 131.69 m = 432.03 ft Precipitable water: 0.42 inches Sfc-500 mean rel hum: 68.22 % Est. max temperature: 6.67 C = 44.01 F Sfc-Lift cond lev (LCL): 921.15 mb = 831.03 m = 2726.46 ft T: -3.31 C 700-500 lapse rate: 5.33 C/km ThetaE index: 1.06 C Layer 1000.0- 939.0 mb Conv cond level (CCL): 749.48 mb = 2449.67 m = 8036.87 ft Mean mixing ratio: 2.58 g/kg Conv temperature: 14.58 C = 58.24 F Cap Strength: 15.78 C Lifted Index: 16.72 C Risk: None Lifted Index @300 mb: 25.37 C Lifted Index @700 mb: 9.02 C Showalter Index: 11.79 C Risk: None Total Totals Index: 39.20 C Risk: None Vertical Totals Index: 20.20 C Cross Totals Index: 19.00 C K Index: 13.60 Risk: None Sweat Index: 83.00 Risk: None Energy Index: 3.29 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 6.29 J/kg Max Up Vert Vel: 3.55 m/s Conv Inhibition (B-): 79532.40 J/kg Cap Strength: 15.73 C Lift Cond Lev (LCL): 887.74 mb = 1122.58 m = 3682.96 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 304 at 22 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 1011 98 360 9 -0.0 -9.0 | 101 19 -18.5 3.4 1 1000 175 350 16 2.8 -15.8 | 78 16 -15.7 -3.3 2 984 305 355 23 2.0 -22.9 | 58 20 -16.5 -10.5 3 947 610 10 22 -3.8 -21.7 | 68 24 -22.3 -9.2 4 925 798 360 21 -0.0 -21.0 | 65 20 -18.5 -8.6 5 911 914 355 19 1.7 -18.9 | 69 18 -16.8 -6.5 6 877 1219 340 16 5.5 -15.0 | 79 13 -13.0 -2.6 7 850 1464 315 18 12.7 -12.7 | 87 6 -5.8 -0.3 8 811 1829 300 16 13.9 -8.0 | 134 6 -4.6 4.4 9 780 2134 275 18 17.9 -1.6 | 177 11 -0.6 10.9 10 750 2438 265 18 17.9 1.6 | 178 14 -0.6 14.0 11 721 2743 275 20 19.9 -1.7 | 188 11 1.4 10.7 12 700 2977 280 25 24.6 -4.3 | 217 10 6.1 8.1 13 639 3658 265 43 42.8 3.7 | 236 29 24.4 16.2 14 589 4267 260 28 27.6 4.9 | 208 20 9.1 17.3 15 543 4877 250 37 34.8 12.7 | 213 30 16.3 25.1 16 500 5490 260 47 46.3 8.2 | 233 35 27.8 20.6 17 479 5791 265 52 51.8 4.5 | 243 37 33.3 17.0 18 459 6096 255 58 56.0 15.0 | 234 47 37.5 27.4 19 400 7090 245 72 65.3 30.4 | 227 63 46.8 42.9 20 387 7315 245 73 66.2 30.9 | 228 64 47.7 43.3 21 370 7620 250 78 73.3 26.7 | 234 67 54.8 39.1 22 324 8513 250 94 88.3 32.1 | 237 83 69.8 44.6 23 300 9020 250 107 100.5 36.6 | 239 96 82.1 49.0 24 294 9144 250 106 99.6 36.3 | 239 95 81.1 48.7 25 253 10142 250 124 116.5 42.4 | 241 112 98.0 54.8 26 250 10220 250 122 114.6 41.7 | 241 110 96.2 54.2 27 245 10363 250 124 116.5 42.4 | 241 112 98.0 54.8 28 200 11680 250 110 103.4 37.6 | 239 99 84.9 50.1 29 150 13520 255 114 110.1 29.5 | 245 101 91.6 41.9 30 132 14326 260 106 104.4 18.4 | 250 91 85.9 30.8 31 114 15240 265 115 114.6 10.0 | 257 99 96.1 22.5 32 100 16050 265 66 65.7 5.8 | 249 51 47.3 18.2 33 98 16154 265 66 65.7 5.8 | 249 51 47.3 18.2 34 89 16764 250 55 51.7 18.8 | 227 46 33.2 31.2 35 77 17678 250 73 68.6 25.0 | 233 63 50.1 37.4 36 73 17983 260 49 48.3 8.5 | 235 36 29.8 20.9 37 70 18240 260 47 46.3 8.2 | 233 35 27.8 20.6 38 69 18288 265 51 50.8 4.4 | 242 36 32.3 16.9 39 63 18898 270 44 44.0 -0.0 | 244 28 25.5 12.4 40 57 19507 255 48 46.4 12.4 | 228 37 27.9 24.9 41 54 19812 265 30 29.9 2.6 | 217 19 11.4 15.1 42 50 20320 255 36 34.8 9.3 | 217 27 16.3 21.8 43 47 20726 255 39 37.7 10.1 | 220 30 19.2 22.5 44 45 21031 270 36 36.0 -0.0 | 235 21 17.5 12.4 45 42 21336 265 34 33.9 3.0 | 225 22 15.4 15.4 46 40 21641 260 37 36.4 6.4 | 224 26 18.0 18.9 47 38 21946 280 35 34.5 -6.1 | 248 17 16.0 6.4 48 33 22860 245 26 23.6 11.0 | 192 24 5.1 23.4 49 32 23165 265 32 31.9 2.8 | 221 20 13.4 15.2 50 30 23490 265 37 36.9 3.2 | 230 24 18.4 15.7 51 29 23774 260 35 34.5 6.1 | 221 24 16.0 18.5 52 27 24079 295 36 32.6 -15.2 | 281 14 14.1 -2.8 53 26 24384 285 27 26.1 -7.0 | 234 9 7.6 5.4 54 24 24994 255 24 23.2 6.2 | 194 19 4.7 18.6 55 23 25298 275 28 27.9 -2.4 | 223 14 9.4 10.0 56 21 25603 275 19 18.9 -1.7 | 182 11 0.4 10.8 57 20 25908 250 17 16.0 5.8 | 172 18 -2.5 18.3 58 20 26050 265 26 25.9 2.3 | 207 16 7.4 14.7 59 18 26822 270 31 31.0 -0.0 | 225 18 12.5 12.4 60 16 27432 265 24 23.9 2.1 | 200 16 5.4 14.5 61 15 27737 280 22 21.7 -3.8 | 200 9 3.2 8.6 62 15 28042 295 16 14.5 -6.8 | 145 7 -4.0 5.7 63 14 28346 255 16 15.5 4.1 | 170 17 -3.0 16.6 64 13 28651 280 16 15.8 -2.8 | 164 10 -2.7 9.7 65 13 28956 280 18 17.7 -3.1 | 175 9 -0.8 9.3 66 12 29261 300 10 8.7 -5.0 | 127 12 -9.8 7.4 67 12 29566 225 10 7.1 7.1 | 150 23 -11.4 19.5 68 11 29870 215 15 8.6 12.3 | 158 27 -9.9 24.7 69 10 30550 285 8 7.7 -2.1 | 134 15 -10.8 10.4 70 7 32910 220 10 6.4 7.7 | 149 23 -12.1 20.1 Wind Parameters Mean winds (0-6000m): 273.9 at 29.7 knts Storm direction: 303.9 at 22.3 knts Shear (0-3000m) pos: 2.9 neg: 5.4 tot: 8.3 10-3/s Storm rel Dir Shear (0-3000m): 126.5 deg Storm rel helicity (0-3000m) pos: 84.4 neg: -63.5 tot: 20.9 m^2/s^2 ave: 7.0 10^-3 m/s^2 rel: 0.22 Storm rel vorticity (0-3000m) horiz: 11.4 stream: 2.5 10^-3/s Energy-Hel index: 0.00 Bulk Rich Number: 0.04 Bulk Shear: 155.97 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 ------------------------------------------------------------------------------- 500 359 20 67 20| 13.6 0.0 13.6| 19.4 -58.9 -39.6 -79.1 -0.48| 20.5 -9.9 1000 359 20 67 20| 6.8 4.8 11.6| 31.3 -63.5 -32.2 -32.2 -0.27| 15.3 -4.1 1500 349 19 67 16| 4.5 6.9 11.4| 40.6 -63.5 -22.9 -15.3 -0.09| 14.1 -1.3 2000 338 18 68 12| 3.4 7.4 10.8| 55.2 -63.5 -8.4 -4.2 0.09| 13.1 1.1 2500 325 18 72 8| 2.7 6.4 9.2| 60.6 -63.5 -3.0 -1.2 0.11| 11.6 1.2 3000 314 19 80 5| 2.9 5.4 8.3| 84.4 -63.5 20.9 7.0 0.22| 11.4 2.5 4000 292 24 224 5| 2.2 5.2 7.4| 96.8-118.5 -21.8 -5.4 0.10| 11.9 1.1 5000 281 26 221 10| 1.8 5.1 6.9|141.3-137.1 4.2 0.8 0.10| 11.4 1.2 6000 274 30 227 15| 2.2 5.2 7.4|261.8-210.4 51.4 8.6 0.13| 11.7 1.6 Wrote GIF file: /home/apache/climate/data/raob//KIAD/skewt/KIAD.skewt.20251208.12.gif