UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025122312.upa.cvt Date: 1200Z 23 DEC 25 Searching for KIAD... Searching the city database file for: KIAD ... Date:1200Z 23 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 1012 98 3.2 -1.4 72 4.6 1.3 170 4 275.4 276.0 273.9 284.7 3.40 1 1004 157 3.6 -4.4 56 8.0 0.5 193 5 276.4 276.9 273.5 284.1 2.74 2 1000 187 3.4 -4.6 56 8.0 0.4 205 6 276.5 277.0 273.5 284.1 2.71 3 956 550 1.2 -7.8 51 9.0 -2.0 215 25 277.9 278.3 273.5 284.2 2.22 4 946 635 1.0 -9.0 47 10.0 -2.4 221 28 278.5 278.9 273.6 284.3 2.04 5 925 815 1.4 -10.6 40 12.0 -2.6 230 27 280.7 281.1 274.6 286.0 1.84 6 923 832 1.4 -10.6 40 12.0 -2.6 231 26 280.9 281.2 274.7 286.2 1.84 7 907 974 2.6 -5.4 56 8.0 -0.5 242 22 283.6 284.0 277.4 291.6 2.81 8 895 1082 2.0 -4.0 64 6.0 -0.4 254 21 284.0 284.6 278.2 293.1 3.17 9 893 1100 2.0 -3.0 69 5.0 -0.1 256 21 284.2 284.8 278.6 294.0 3.43 10 886 1164 3.2 2.2 93 1.0 2.7 264 20 286.1 287.0 281.5 300.4 5.06 11 883 1191 3.4 2.6 94 0.8 3.0 267 19 286.6 287.5 281.9 301.3 5.23 12 850 1500 1.8 1.8 100 0.0 1.8 275 22 288.0 288.9 282.4 302.6 5.13 13 846 1538 1.6 1.6 100 0.0 1.6 276 23 288.2 289.1 282.4 302.7 5.08 14 805 1940 2.4 2.4 100 0.0 2.4 278 33 293.2 294.2 285.2 309.6 5.66 15 700 3062 -1.7 -1.7 100 0.0 -1.7 285 50 300.6 301.5 287.1 315.1 4.83 16 681 3281 -2.5 -2.5 100 0.0 -2.5 285 53 302.1 302.9 287.5 316.2 4.67 17 621 4008 -6.5 -7.4 93 0.9 -6.9 285 62 305.6 306.2 287.6 316.5 3.53 18 608 4173 -7.7 -7.7 100 0.0 -7.7 282 59 306.0 306.7 287.8 317.0 3.52 19 560 4809 -11.1 -11.6 96 0.5 -11.3 289 60 309.3 309.8 288.2 318.3 2.81 20 558 4837 -11.3 -12.1 94 0.8 -11.6 289 60 309.4 309.9 288.1 318.0 2.71 21 552 4920 -11.9 -13.4 89 1.5 -12.4 290 60 309.6 310.1 287.9 317.5 2.46 22 528 5259 -14.3 -14.7 97 0.4 -14.5 291 64 310.7 311.2 288.2 318.2 2.32 23 500 5670 -17.5 -18.3 93 0.8 -17.7 295 62 311.7 312.0 287.9 317.6 1.81 24 495 5745 -18.1 -18.6 96 0.5 -18.3 295 61 311.9 312.2 288.0 317.7 1.78 25 493 5775 -18.3 -19.6 89 1.3 -18.7 295 61 312.0 312.3 287.9 317.4 1.64 26 476 6036 -20.3 -22.1 85 1.8 -20.7 295 59 312.7 312.9 287.8 317.2 1.37 27 474 6068 -20.7 -23.8 76 3.1 -21.4 295 58 312.5 312.8 287.6 316.5 1.18 28 461 6273 -22.3 -24.4 83 2.1 -22.8 294 58 313.0 313.3 287.7 316.9 1.15 29 451 6434 -23.3 -26.0 78 2.7 -23.8 292 58 313.8 313.9 287.8 317.2 1.02 30 427 6831 -26.7 -27.4 94 0.7 -26.8 292 60 314.4 314.5 287.9 317.6 0.95 31 426 6848 -26.9 -27.6 94 0.7 -27.1 292 60 314.3 314.5 287.9 317.5 0.93 32 425 6865 -26.7 -28.1 88 1.4 -26.9 293 61 314.8 315.0 288.1 317.8 0.89 33 418 6985 -27.7 -28.7 91 1.0 -27.9 295 63 315.0 315.2 288.1 317.9 0.86 34 413 7071 -28.3 -31.7 73 3.4 -28.8 296 64 315.3 315.4 287.9 317.6 0.65 35 409 7141 -28.7 -33.1 66 4.4 -29.3 297 65 315.7 315.8 288.0 317.7 0.57 36 408 7159 -28.7 -32.8 68 4.1 -29.3 298 66 315.9 316.0 288.1 318.0 0.59 37 400 7300 -29.9 -35.9 56 6.0 -30.7 300 68 316.1 316.2 288.0 317.7 0.45 38 398 7336 -29.9 -35.9 56 6.0 -30.7 300 69 316.6 316.7 288.2 318.2 0.45 39 396 7372 -30.1 -43.1 27 13.0 -31.4 300 69 316.8 316.8 287.9 317.6 0.21 40 391 7462 -30.9 -44.9 24 14.0 -32.1 300 70 316.9 316.9 287.9 317.5 0.18 41 376 7739 -32.7 -44.7 29 12.0 -33.7 300 73 318.1 318.1 288.3 318.8 0.19 42 370 7852 -33.5 -41.5 44 8.0 -34.3 299 74 318.5 318.5 288.6 319.5 0.27 43 368 7890 -33.9 -41.9 44 8.0 -34.6 299 74 318.4 318.5 288.5 319.4 0.26 44 362 8006 -34.7 -40.7 54 6.0 -35.3 299 75 318.9 318.9 288.7 320.0 0.30 45 342 8401 -37.9 -45.9 43 8.0 -38.5 297 77 319.7 319.8 288.9 320.4 0.18 46 331 8625 -39.9 -44.5 61 4.6 -40.2 297 78 320.0 320.0 289.0 320.8 0.22 47 328 8687 -40.3 -45.3 59 5.0 -40.6 297 78 320.3 320.3 289.0 321.0 0.20 48 303 9223 -44.9 -47.6 74 2.7 -45.0 295 81 321.2 321.2 289.3 321.8 0.17 49 300 9290 -45.5 -48.2 74 2.7 -45.6 295 81 321.2 321.3 289.3 321.8 0.16 50 295 9401 -46.5 -49.5 71 3.0 -46.6 292 82 321.4 321.4 289.3 321.9 0.14 51 294 9423 -46.7 -52.7 50 6.0 -46.9 291 82 321.4 321.4 289.3 321.8 0.10 52 293 9445 -46.7 -53.7 45 7.0 -47.0 290 82 321.7 321.7 289.4 322.0 0.09 53 291 9490 -46.9 -50.9 64 4.0 -47.1 291 82 322.0 322.1 289.5 322.5 0.12 54 290 9513 -47.3 -53.3 50 6.0 -47.5 291 83 321.8 321.8 289.4 322.2 0.09 55 274 9882 -50.5 -55.0 59 4.5 -50.7 297 86 322.4 322.4 289.6 322.7 0.08 56 267 10049 -51.5 -57.5 49 6.0 -51.7 300 88 323.4 323.4 289.9 323.6 0.06 57 250 10470 -54.5 -61.5 42 7.0 -54.6 305 99 325.0 325.0 290.3 325.2 0.04 58 214 11449 -61.5 -64.0 72 2.5 -61.5 305 118 329.0 329.0 291.5 329.1 0.03 59 213 11478 -61.7 -64.1 73 2.4 -61.7 305 118 329.1 329.1 291.5 329.2 0.03 60 200 11870 -58.5 -77.5 7 19.0 -58.7 310 110 340.1 340.1 294.4 340.1 0.00 61 150 13690 -57.3 -83.3 2 26.0 -57.6 310 111 371.4 371.4 300.8 371.4 0.00 62 100 16230 -62.3 -87.3 2 25.0 -62.5 305 80 407.4 407.4 306.2 407.4 0.00 63 97 16418 -63.3 -87.3 2 24.0 -63.5 305 80 409.0 409.0 306.4 409.0 0.00 64 94 16612 -61.7 -86.7 2 25.0 -62.0 307 74 415.8 415.8 307.2 415.8 0.00 65 85 17231 -65.3 -87.3 3 22.0 -65.5 292 61 420.7 420.7 307.8 420.7 0.00 66 79 17677 -65.7 -87.7 3 22.0 -65.9 275 55 428.7 428.7 308.7 428.7 0.00 67 78 17755 -63.3 -87.3 2 24.0 -63.6 280 55 435.3 435.3 309.4 435.3 0.00 68 75 17997 -62.3 -86.3 3 24.0 -62.6 295 55 442.3 442.3 310.1 442.3 0.00 69 70 18420 -66.3 -87.3 4 21.0 -66.5 290 57 442.5 442.5 310.1 442.6 0.00 70 66 18775 -69.3 -88.3 5 19.0 -69.4 290 60 443.5 443.5 310.2 443.5 0.00 71 63 19053 -69.7 -88.7 5 19.0 -69.8 294 58 448.6 448.6 310.7 448.6 0.00 72 54 19968 -71.9 -89.9 5 18.0 -72.0 310 39 463.7 463.7 312.1 463.7 0.00 73 53 20078 -70.7 -90.7 4 20.0 -70.8 306 38 469.0 469.0 312.5 469.0 0.00 74 53 20078 -68.3 -89.3 3 21.0 -68.5 306 38 474.6 474.6 313.0 474.6 0.00 75 52 20193 -66.9 -88.9 3 22.0 -67.1 302 36 480.4 480.4 313.5 480.4 0.00 76 50 20430 -67.9 -88.9 3 21.0 -68.1 295 31 483.5 483.5 313.7 483.5 0.00 77 47 20800 -68.9 -89.9 3 21.0 -69.1 295 42 489.7 489.7 314.2 489.7 0.00 78 46 20928 -68.5 -89.5 3 21.0 -68.7 295 46 493.7 493.7 314.5 493.7 0.00 79 44 21196 -64.3 -88.3 2 24.0 -64.7 300 45 510.3 510.3 315.7 510.3 0.00 80 37 22239 -70.1 -90.1 4 20.0 -70.3 292 40 521.3 521.3 316.4 521.3 0.00 81 36 22401 -69.3 -90.3 3 21.0 -69.5 296 41 527.5 527.5 316.8 527.5 0.00 82 35 22570 -67.1 -89.1 3 22.0 -67.4 300 41 537.5 537.5 317.3 537.5 0.00 83 32 23108 -68.3 -90.3 3 22.0 -68.6 275 34 548.2 548.2 318.0 548.2 0.00 84 31 23300 -65.1 -89.1 2 24.0 -65.6 278 30 561.9 561.9 318.8 561.9 0.00 85 30 23500 -63.1 -88.1 2 25.0 -63.7 290 22 572.6 572.6 319.3 572.7 0.01 86 29 23709 -63.1 -88.1 2 25.0 -63.7 290 24 578.2 578.2 319.6 578.2 0.01 87 28 23924 -64.5 -89.5 2 25.0 -65.1 291 23 580.1 580.1 319.7 580.2 0.00 88 25 24617 -64.5 -89.5 2 25.0 -65.1 275 18 599.2 599.3 320.6 599.3 0.01 89 23 25130 -61.5 -88.5 2 27.0 -62.5 263 32 622.5 622.5 321.6 622.6 0.01 90 22 25405 -62.3 -87.3 2 25.0 -63.2 264 35 628.1 628.1 321.8 628.2 0.01 91 21 25695 -58.9 -86.9 2 28.0 -60.3 265 37 646.8 646.8 322.6 646.9 0.01 92 20 26000 -60.1 -87.1 2 27.0 -61.4 265 31 652.2 652.2 322.7 652.3 0.01 93 16 27392 -60.1 -88.1 1 28.0 -61.7 270 47 695.2 695.2 324.3 695.3 0.01 94 13 28706 -53.9 -84.9 1 31.0 -57.3 268 44 759.2 759.2 326.2 759.4 0.02 95 11 29776 -54.9 -85.9 1 31.0 -58.4 263 62 792.7 792.7 327.1 792.9 0.02 96 10 30380 -58.3 -86.3 2 28.0 -61.0 260 69 801.9 801.9 327.3 802.1 0.02 97 9.5 30704 -56.9 -86.9 1 30.0 -60.1 261 73 819.1 819.1 327.7 819.3 0.02 98 9.0 31044 -59.1 -87.1 1 28.0 -61.8 261 76 823.4 823.4 327.8 823.6 0.02 99 8.1 31703 -60.3 -88.3 1 28.0 -62.9 263 84 843.8 843.8 328.2 844.0 0.02 100 7.1 32530 -57.1 -87.1 1 30.0 -61.0 265 93 889.4 889.4 329.2 889.7 0.03 101 7.0 32620 -56.1 -87.1 1 31.0 -60.3 265 94 897.1 897.2 329.4 897.4 0.03 TRP 213 11478 -61.7 -64.1 73 2.4 -61.7 305 118 329.1 329.1 291.5 329.2 0.03 WND 214 11449 -61.5 -64.0 72 2.5 -61.5 305 118 329.0 329.0 291.5 329.1 0.03 Sounding variables and indices 1000-500 mb thick: 5483.00 m Freezing level: 743.54 mb = 2596.59 m = 8518.90 ft Wetbulb zero: 993.03 mb = 243.45 m = 798.71 ft Precipitable water: 0.84 inches Sfc-500 mean rel hum: 89.33 % Est. max temperature: 15.33 C = 59.59 F Sfc-Lift cond lev (LCL): 942.40 mb = 665.23 m = 2182.49 ft T: 1.07 C 700-500 lapse rate: 6.06 C/km ThetaE index: 0.69 C Layer 1004.0-1000.0 mb Conv cond level (CCL): 523.95 mb = 5316.91 m = 17443.71 ft Mean mixing ratio: 2.33 g/kg Conv temperature: 38.78 C = 101.80 F Cap Strength: 22.36 C Lifted Index: 22.62 C Risk: None Lifted Index @300 mb: 25.79 C Lifted Index @700 mb: 17.41 C Showalter Index: 9.67 C Risk: None Total Totals Index: 38.60 C Risk: None Vertical Totals Index: 19.30 C Cross Totals Index: 19.30 C K Index: 21.10 Risk: 20-40 % chance of thunderstorms Sweat Index: 127.60 Risk: None Energy Index: 3.11 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 21.43 J/kg Max Up Vert Vel: 6.55 m/s Conv Inhibition (B-): 63619.09 J/kg Cap Strength: 22.56 C Lift Cond Lev (LCL): 833.04 mb = 1662.88 m = 5455.57 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 312 at 33 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 1012 98 170 4 -0.7 3.9 | 136 37 -25.3 26.4 1 1000 187 205 6 2.5 5.4 | 142 36 -22.1 27.9 2 985 305 195 12 3.1 11.6 | 148 40 -21.5 34.1 3 949 610 220 28 18.0 21.4 | 171 44 -6.6 43.9 4 925 815 230 27 20.7 17.4 | 174 40 -3.9 39.8 5 914 914 235 23 18.8 13.2 | 171 36 -5.8 35.7 6 880 1219 270 19 19.0 -0.0 | 166 23 -5.6 22.5 7 850 1500 275 22 21.9 -1.9 | 173 21 -2.7 20.6 8 816 1829 280 33 32.5 -5.7 | 205 19 7.9 16.7 9 786 2134 275 33 32.9 -2.9 | 203 21 8.3 19.6 10 756 2438 285 38 36.7 -9.8 | 224 17 12.1 12.6 11 728 2743 285 42 40.6 -10.9 | 234 20 15.9 11.6 12 700 3062 285 50 48.3 -12.9 | 248 26 23.7 9.5 13 648 3658 285 59 57.0 -15.3 | 257 33 32.4 7.2 14 623 3962 285 62 59.9 -16.0 | 260 36 35.3 6.4 15 599 4267 280 57 56.1 -9.9 | 248 34 31.5 12.6 16 554 4877 290 60 56.4 -20.5 | 266 32 31.8 2.0 17 533 5182 290 64 60.1 -21.9 | 269 36 35.5 0.6 18 500 5670 295 62 56.2 -26.2 | 277 32 31.6 -3.7 19 472 6096 295 58 52.6 -24.5 | 274 28 27.9 -2.0 20 434 6706 290 58 54.5 -19.8 | 265 30 29.9 2.6 21 400 7300 300 68 58.9 -34.0 | 289 36 34.3 -11.5 22 382 7620 300 73 63.2 -36.5 | 290 41 38.6 -14.0 23 306 9144 295 80 72.5 -33.8 | 283 49 47.9 -11.3 24 300 9290 295 81 73.4 -34.2 | 284 50 48.8 -11.8 25 293 9449 290 82 77.1 -28.0 | 276 53 52.4 -5.6 26 254 10363 305 91 74.5 -52.2 | 301 58 49.9 -29.7 27 250 10470 305 99 81.1 -56.8 | 301 66 56.5 -34.3 28 214 11449 305 118 96.7 -67.7 | 302 85 72.0 -45.2 29 213 11478 305 118 96.7 -67.7 | 302 85 72.0 -45.2 30 209 11582 305 118 96.7 -67.7 | 302 85 72.0 -45.2 31 200 11870 310 110 84.3 -70.7 | 309 77 59.6 -48.2 32 173 12802 310 96 73.5 -61.7 | 309 63 48.9 -39.2 33 150 13690 310 111 85.0 -71.3 | 309 78 60.4 -48.9 34 149 13716 305 116 95.0 -66.5 | 302 83 70.4 -44.1 35 129 14630 310 85 65.1 -54.6 | 308 52 40.5 -32.2 36 117 15240 295 104 94.3 -44.0 | 287 73 69.6 -21.5 37 100 16230 305 80 65.5 -45.9 | 300 47 40.9 -23.4 38 96 16459 305 80 65.5 -45.9 | 300 47 40.9 -23.4 39 92 16764 310 68 52.1 -43.7 | 308 35 27.5 -21.2 40 79 17678 275 55 54.8 -4.8 | 240 35 30.2 17.7 41 75 17983 295 55 49.8 -23.2 | 272 25 25.2 -0.8 42 72 18288 290 57 53.6 -19.5 | 264 29 28.9 3.0 43 70 18420 290 57 53.6 -19.5 | 264 29 28.9 3.0 44 65 18898 290 61 57.3 -20.9 | 267 33 32.7 1.6 45 55 19812 315 42 29.7 -29.7 | 325 9 5.1 -7.2 46 50 20422 295 32 29.0 -13.5 | 206 10 4.4 9.0 47 50 20430 295 31 28.1 -13.1 | 200 10 3.5 9.4 48 45 21031 295 49 44.4 -20.7 | 265 20 19.8 1.8 49 43 21336 305 41 33.6 -23.5 | 277 9 9.0 -1.0 50 41 21641 290 33 31.0 -11.3 | 210 13 6.4 11.2 51 39 21946 285 39 37.7 -10.1 | 227 18 13.0 12.4 52 35 22555 300 42 36.4 -21.0 | 263 12 11.8 1.5 53 33 22860 300 26 22.5 -13.0 | 167 10 -2.1 9.5 54 32 23165 270 36 36.0 -0.0 | 207 25 11.4 22.5 55 30 23500 290 22 20.7 -7.5 | 165 15 -3.9 15.0 56 29 23774 290 24 22.6 -8.2 | 172 14 -2.1 14.3 57 26 24384 295 20 18.1 -8.5 | 155 15 -6.5 14.0 58 25 24689 270 18 18.0 -0.0 | 164 23 -6.6 22.5 59 22 25298 260 37 36.4 6.4 | 202 31 11.8 28.9 60 21 25603 270 32 32.0 -0.0 | 198 24 7.4 22.5 61 20 25908 255 49 47.3 12.7 | 213 42 22.7 35.2 62 20 26000 265 31 30.9 2.7 | 194 26 6.3 25.2 63 18 26518 265 31 30.9 2.7 | 194 26 6.3 25.2 64 18 26822 260 52 51.2 9.0 | 220 41 26.6 31.5 65 16 27432 270 47 47.0 -0.0 | 225 32 22.4 22.5 66 14 28042 285 49 47.3 -12.7 | 247 25 22.7 9.8 67 13 28651 270 41 41.0 -0.0 | 216 28 16.4 22.5 68 13 28956 260 55 54.2 9.6 | 223 44 29.5 32.0 69 11 29566 270 64 64.0 -0.0 | 240 45 39.4 22.5 70 11 29870 260 61 60.1 10.6 | 227 48 35.5 33.1 71 10 30380 260 69 68.0 12.0 | 232 55 43.3 34.5 72 7 32620 265 94 93.6 8.2 | 246 76 69.0 30.7 Wind Parameters Mean winds (0-6000m): 282.4 at 44.4 knts Storm direction: 312.4 at 33.3 knts Shear (0-3000m) pos: 5.9 neg: 3.1 tot: 9.0 10-3/s Storm rel Dir Shear (0-3000m): 112.6 deg Storm rel helicity (0-3000m) pos: 448.2 neg: -36.0 tot: 412.3 m^2/s^2 ave: 137.4 10^-3 m/s^2 rel: 0.60 Storm rel vorticity (0-3000m) horiz: 14.8 stream: 8.9 10^-3/s Energy-Hel index: 0.05 Bulk Rich Number: 0.09 Bulk Shear: 241.84 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 ------------------------------------------------------------------------------- 500 209 14 153 39| 25.7 0.0 25.7|264.0 0.0 264.0 528.0 0.90| 27.8 25.1 1000 224 20 163 38| 10.7 0.0 10.7|295.1 -22.8 272.3 272.3 0.55| 23.1 12.8 1500 240 20 167 33| 9.2 0.0 9.2|323.8 -33.1 290.8 193.8 0.51| 19.3 9.8 2000 254 23 175 29| 6.9 2.0 8.9|362.1 -36.0 326.2 163.1 0.54| 17.0 9.2 2500 262 26 182 26| 7.1 1.6 8.7|405.8 -36.0 369.9 147.9 0.58| 15.6 9.1 3000 269 29 190 23| 5.9 3.1 9.0|448.2 -36.0 412.3 137.4 0.60| 14.8 8.9 4000 276 36 211 22| 4.5 3.5 8.0|492.1 -62.4 429.7 107.4 0.54| 12.9 7.0 5000 279 41 224 23| 4.1 2.8 6.9|587.8 -92.7 495.1 99.0 0.53| 12.0 6.4 6000 282 44 235 23| 3.1 2.4 5.5|630.7-102.6 528.1 88.0 0.52| 10.9 5.6 Wrote GIF file: /home/apache/climate/data/raob//KIAD/skewt/KIAD.skewt.20251223.12.gif