UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025122100.upa.cvt Date: 0000Z 21 DEC 25 Searching for KIAD... Searching the city database file for: KIAD ... Date:0000Z 21 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 5.0 -4.0 52 9.0 1.5 155 8 277.4 277.9 274.2 285.3 2.81 1 1004 131 5.4 -4.6 48 10.0 1.5 163 11 278.2 278.7 274.5 285.8 2.70 2 1000 158 5.4 -4.6 48 10.0 1.5 170 14 278.5 279.0 274.6 286.2 2.71 3 982 306 4.8 -5.2 48 10.0 1.0 180 24 279.4 279.8 275.0 286.8 2.64 4 963 466 5.4 -7.6 39 13.0 0.5 193 28 281.6 282.0 275.6 288.0 2.24 5 936 698 3.8 -8.2 41 12.0 -0.6 210 33 282.2 282.6 275.9 288.6 2.20 6 925 794 3.4 -9.6 38 13.0 -1.2 215 34 282.8 283.1 275.9 288.6 1.99 7 916 873 3.2 -11.8 32 15.0 -1.8 218 37 283.4 283.7 275.8 288.3 1.69 8 906 962 3.2 -12.8 30 16.0 -2.1 222 37 284.3 284.5 276.1 288.9 1.57 9 901 1007 4.2 -19.8 15 24.0 -2.6 225 37 285.7 285.9 275.9 288.4 0.88 10 897 1043 6.2 -33.8 4 40.0 -2.6 226 36 288.2 288.2 276.1 289.0 0.24 11 894 1070 6.2 -32.8 4 39.0 -2.5 228 36 288.4 288.5 276.3 289.3 0.27 12 884 1163 7.8 -32.2 4 40.0 -1.6 232 35 291.0 291.1 277.6 292.0 0.29 13 850 1484 5.8 -19.2 15 25.0 -1.9 245 31 292.2 292.4 279.2 295.3 0.98 14 844 1542 5.6 -17.4 17 23.0 -1.7 245 31 292.6 292.8 279.6 296.2 1.15 15 838 1600 6.0 -17.0 17 23.0 -1.5 245 31 293.6 293.8 280.1 297.4 1.20 16 783 2152 2.2 -19.8 18 22.0 -4.4 260 32 295.3 295.5 280.7 298.5 1.01 17 757 2425 1.4 -10.6 40 12.0 -3.1 251 30 297.3 297.7 283.1 304.2 2.25 18 720 2826 -1.5 -10.5 50 9.0 -4.8 259 33 298.4 298.8 283.7 305.7 2.38 19 714 2893 -0.3 -8.3 55 8.0 -3.5 262 33 300.4 301.0 285.0 309.2 2.86 20 705 2994 -0.7 -8.7 55 8.0 -3.9 267 32 301.1 301.6 285.2 309.7 2.81 21 700 3051 -0.5 -9.5 51 9.0 -4.0 270 35 301.9 302.4 285.4 310.2 2.66 22 678 3307 0.0 -13.0 37 13.0 -4.8 270 37 305.3 305.6 286.0 311.8 2.07 23 659 3534 -0.9 -15.9 31 15.0 -6.1 270 39 306.7 307.1 286.1 312.1 1.68 24 652 3619 -1.5 -15.5 34 14.0 -6.4 270 40 307.0 307.3 286.2 312.6 1.75 25 613 4107 -5.5 -17.5 38 12.0 -9.4 266 40 307.9 308.2 286.4 313.0 1.58 26 607 4184 -5.9 -16.9 41 11.0 -9.5 263 40 308.3 308.6 286.6 313.7 1.68 27 601 4262 -6.1 -12.1 62 6.0 -8.3 261 40 308.9 309.4 287.8 316.9 2.51 28 581 4526 -7.3 -12.3 67 5.0 -9.2 252 40 310.5 311.0 288.3 318.7 2.56 29 560 4812 -9.5 -12.9 76 3.4 -10.7 250 43 311.2 311.7 288.5 319.3 2.53 30 548 4979 -10.1 -14.7 69 4.6 -11.7 251 46 312.4 312.9 288.6 319.7 2.23 31 525 5308 -12.7 -16.6 73 3.9 -13.9 255 52 313.2 313.5 288.6 319.7 1.99 32 520 5381 -12.9 -17.9 66 5.0 -14.5 256 53 313.8 314.1 288.6 319.7 1.80 33 517 5426 -13.1 -17.8 68 4.7 -14.5 257 54 314.0 314.4 288.8 320.1 1.82 34 513 5485 -13.3 -20.3 56 7.0 -15.3 258 55 314.5 314.8 288.6 319.5 1.48 35 508 5559 -13.7 -20.7 55 7.0 -15.7 258 57 314.9 315.2 288.6 319.8 1.45 36 507 5574 -13.5 -23.5 43 10.0 -16.1 259 57 315.3 315.5 288.5 319.2 1.13 37 504 5619 -13.9 -22.9 47 9.0 -16.3 259 58 315.4 315.6 288.6 319.4 1.20 38 500 5680 -14.1 -25.1 39 11.0 -16.8 260 59 315.8 316.0 288.5 319.3 1.00 39 497 5726 -14.1 -31.1 22 17.0 -17.6 260 60 316.4 316.5 288.2 318.4 0.57 40 496 5741 -14.1 -31.1 22 17.0 -17.6 260 60 316.6 316.7 288.3 318.6 0.57 41 488 5864 -14.5 -27.5 32 13.0 -17.5 260 62 317.6 317.7 288.9 320.4 0.82 42 470 6148 -16.5 -25.5 46 9.0 -18.7 260 65 318.5 318.7 289.4 322.0 1.02 43 466 6213 -16.9 -26.9 42 10.0 -19.2 261 65 318.8 319.0 289.3 321.9 0.91 44 463 6261 -17.1 -27.1 42 10.0 -19.4 261 64 319.1 319.3 289.5 322.3 0.90 45 462 6277 -17.1 -24.1 55 7.0 -18.8 261 64 319.3 319.6 289.8 323.4 1.18 46 460 6310 -17.3 -25.3 50 8.0 -19.2 261 64 319.5 319.7 289.7 323.2 1.06 47 427 6863 -22.3 -28.3 58 6.0 -23.5 264 62 320.0 320.1 289.7 323.0 0.87 48 408 7196 -24.5 -31.5 52 7.0 -25.7 262 62 321.3 321.5 289.9 323.7 0.67 49 400 7340 -25.7 -32.7 52 7.0 -26.8 260 62 321.6 321.7 289.9 323.8 0.61 50 397 7394 -26.3 -32.3 57 6.0 -27.3 260 63 321.5 321.6 289.9 323.8 0.64 51 391 7504 -26.7 -35.7 42 9.0 -28.0 260 64 322.4 322.5 290.0 324.1 0.47 52 390 7523 -26.9 -34.9 47 8.0 -28.1 260 64 322.4 322.5 290.0 324.2 0.51 53 388 7560 -26.9 -36.9 38 10.0 -28.3 260 64 322.8 322.9 290.1 324.4 0.42 54 381 7690 -27.9 -32.9 62 5.0 -28.7 260 66 323.2 323.3 290.4 325.5 0.63 55 379 7728 -28.1 -34.1 56 6.0 -29.0 260 66 323.4 323.5 290.4 325.5 0.56 56 300 9360 -40.7 -49.7 37 9.0 -41.2 265 80 328.0 328.0 291.3 328.5 0.14 57 250 10570 -50.5 -59.5 34 9.0 -50.7 260 87 331.0 331.0 292.0 331.2 0.05 58 200 11990 -61.3 -69.3 34 8.0 -61.4 265 91 335.7 335.7 293.3 335.8 0.02 59 181 12606 -64.9 -71.9 37 7.0 -65.0 265 83 339.5 339.5 294.2 339.6 0.01 60 171 12955 -63.3 -76.1 16 12.7 -63.4 265 98 347.7 347.7 296.1 347.7 0.01 61 150 13770 -59.7 -85.7 2 26.0 -59.9 275 65 367.2 367.2 300.1 367.2 0.00 62 100 16290 -64.3 -87.3 3 23.0 -64.5 255 68 403.5 403.5 305.7 403.5 0.00 63 84 17343 -68.7 -87.7 5 19.0 -68.8 281 51 415.2 415.2 307.2 415.2 0.00 64 81 17561 -68.7 -88.7 4 20.0 -68.8 289 44 419.5 419.5 307.7 419.5 0.00 65 80 17635 -66.9 -87.9 4 21.0 -67.1 292 41 424.7 424.7 308.3 424.7 0.00 66 76 17943 -68.9 -87.9 5 19.0 -69.0 304 31 426.8 426.8 308.5 426.8 0.00 67 70 18440 -64.1 -88.1 2 24.0 -64.4 255 18 447.3 447.3 310.6 447.3 0.00 68 69 18528 -63.5 -87.5 2 24.0 -63.8 272 21 450.4 450.4 310.9 450.4 0.00 69 67 18708 -64.3 -88.3 2 24.0 -64.6 268 22 452.5 452.5 311.1 452.5 0.00 70 64 18989 -62.3 -88.3 2 26.0 -62.6 242 19 462.8 462.8 312.0 462.8 0.00 71 58 19594 -63.1 -88.1 2 25.0 -63.4 228 18 474.2 474.2 313.0 474.2 0.00 72 50 20510 -60.7 -87.7 2 27.0 -61.2 235 35 500.4 500.4 315.0 500.5 0.00 73 45 21166 -60.3 -87.3 2 27.0 -60.9 242 30 516.7 516.7 316.1 516.7 0.00 74 40 21898 -61.5 -88.5 2 27.0 -62.1 247 25 531.4 531.4 317.0 531.4 0.00 75 36 22555 -58.5 -87.5 1 29.0 -59.5 260 25 555.4 555.4 318.4 555.5 0.01 76 32 23290 -61.3 -88.3 2 27.0 -62.0 272 16 567.0 567.0 319.0 567.0 0.00 77 30 23690 -61.9 -87.9 2 26.0 -62.6 260 14 575.9 575.9 319.5 575.9 0.01 78 27 24340 -63.1 -89.1 2 26.0 -63.8 235 18 590.1 590.1 320.2 590.2 0.01 79 27 24340 -61.7 -88.7 2 27.0 -62.5 235 18 594.1 594.1 320.3 594.1 0.01 80 25 24814 -63.5 -89.5 2 26.0 -64.2 223 24 602.1 602.1 320.7 602.2 0.01 81 24 25067 -60.9 -88.9 1 28.0 -61.9 219 27 616.7 616.7 321.3 616.8 0.01 82 22 25608 -60.5 -88.5 1 28.0 -61.6 225 34 633.5 633.5 322.0 633.5 0.01 83 22 25608 -60.5 -88.5 1 28.0 -61.6 225 34 633.5 633.5 322.0 633.5 0.01 84 20 26200 -61.5 -88.5 2 27.0 -62.6 230 30 647.9 647.9 322.6 648.0 0.01 85 17 27213 -59.1 -87.1 1 28.0 -60.7 208 20 686.4 686.5 324.0 686.5 0.01 86 15 27994 -61.1 -89.1 1 28.0 -62.6 210 20 704.8 704.8 324.6 704.9 0.01 87 14 28427 -57.1 -87.1 1 30.0 -59.5 255 31 732.4 732.4 325.4 732.5 0.01 88 12 29396 -60.1 -88.1 1 28.0 -62.1 291 33 754.8 754.8 326.1 754.9 0.01 89 10 30540 -57.7 -86.7 1 29.0 -60.6 270 32 804.2 804.2 327.4 804.4 0.02 90 9.2 31065 -58.7 -87.7 1 29.0 -61.5 819.8 819.8 327.7 819.9 0.02 91 8.7 31416 -58.3 -87.3 1 29.0 -61.3 834.5 834.5 328.1 834.7 0.02 92 8.2 31792 -54.7 -85.7 1 31.0 -59.0 863.0 863.0 328.7 863.3 0.03 93 7.6 32280 -52.7 -84.7 1 32.0 -58.0 890.0 890.0 329.2 890.4 0.04 94 7.5 32366 -52.5 -84.5 1 32.0 -57.9 894.2 894.2 329.3 894.6 0.04 TRP 181 12606 -64.9 -71.9 37 7.0 -65.0 265 83 339.5 339.5 294.2 339.6 0.01 WND 171 12955 -63.3 -76.1 16 12.7 -63.4 265 98 347.7 347.7 296.1 347.7 0.01 Sounding variables and indices 1000-500 mb thick: 5522.00 m Freezing level: 739.14 mb = 2618.31 m = 8590.15 ft Freezing level: 678.00 mb = 3306.58 m = 10848.24 ft Freezing level: 678.00 mb = 3306.58 m = 10848.24 ft Wetbulb zero: 949.73 mb = 579.18 m = 1900.18 ft Precipitable water: 0.43 inches Sfc-500 mean rel hum: 41.71 % Est. max temperature: 19.50 C = 67.10 F Sfc-Lift cond lev (LCL): 877.91 mb = 1219.27 m = 4000.17 ft T: 7.45 C 700-500 lapse rate: 5.17 C/km ThetaE index: 0.47 C Layer 901.0- 897.0 mb Conv cond level (CCL): 472.95 mb = 6100.99 m = 20016.12 ft Mean mixing ratio: 2.29 g/kg Conv temperature: 46.02 C = 114.83 F Cap Strength: 23.63 C Lifted Index: 23.91 C Risk: None Lifted Index @300 mb: 28.60 C Lifted Index @700 mb: 16.71 C Showalter Index: 18.22 C Risk: None Total Totals Index: 14.80 C Risk: None Vertical Totals Index: 19.90 C Cross Totals Index: -5.10 C K Index: -8.30 Risk: None Sweat Index: 178.35 Risk: None Energy Index: 5.02 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 21.05 J/kg Max Up Vert Vel: 6.49 m/s Conv Inhibition (B-): 58834.48 J/kg Cap Strength: 23.61 C Lift Cond Lev (LCL): 796.45 mb = 2013.84 m = 6607.02 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 282 at 29 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 98 155 8 -3.4 7.3 | 112 34 -31.7 13.1 1 1000 158 170 14 -2.4 13.8 | 123 37 -30.8 19.7 2 982 305 180 24 0.0 24.0 | 136 41 -28.4 29.9 3 946 610 205 32 13.5 29.0 | 157 38 -14.8 34.9 4 925 794 215 34 19.5 27.9 | 165 35 -8.9 33.7 5 911 914 220 38 24.4 29.1 | 174 35 -3.9 35.0 6 878 1219 235 34 27.9 19.5 | 179 25 -0.5 25.4 7 850 1484 245 31 28.1 13.1 | 179 19 -0.3 19.0 8 814 1829 245 31 28.1 13.1 | 179 19 -0.3 19.0 9 784 2134 260 32 31.5 5.6 | 195 12 3.2 11.4 10 755 2438 250 30 28.2 10.3 | 179 16 -0.2 16.1 11 727 2743 255 33 31.9 8.5 | 194 15 3.5 14.4 12 700 3048 270 32 32.0 -0.0 | 212 7 3.6 5.9 13 700 3051 270 35 35.0 -0.0 | 228 9 6.6 5.9 14 648 3658 270 40 40.0 -0.0 | 243 13 11.6 5.9 15 623 3962 270 40 40.0 -0.0 | 243 13 11.6 5.9 16 599 4267 260 40 39.4 6.9 | 221 17 11.0 12.8 17 576 4572 250 40 37.6 13.7 | 205 22 9.2 19.6 18 554 4877 250 44 41.3 15.0 | 212 25 13.0 20.9 19 500 5680 260 59 58.1 10.2 | 242 34 29.7 16.1 20 473 6096 260 65 64.0 11.3 | 244 40 35.7 17.2 21 418 7010 265 61 60.8 5.3 | 251 34 32.4 11.2 22 400 7340 260 62 61.1 10.8 | 243 37 32.7 16.6 23 384 7620 260 65 64.0 11.3 | 244 40 35.7 17.2 24 309 9144 260 79 77.8 13.7 | 248 53 49.4 19.6 25 300 9360 265 80 79.7 7.0 | 256 53 51.3 12.9 26 258 10363 255 82 79.2 21.2 | 242 58 50.8 27.1 27 250 10570 260 87 85.7 15.1 | 250 61 57.3 21.0 28 235 10973 265 92 91.6 8.0 | 258 65 63.3 13.9 29 200 11990 265 91 90.7 7.9 | 257 64 62.3 13.8 30 184 12497 265 83 82.7 7.2 | 256 56 54.3 13.1 31 181 12606 265 83 82.7 7.2 | 256 56 54.3 13.1 32 171 12955 265 98 97.6 8.5 | 258 71 69.3 14.4 33 167 13106 265 98 97.6 8.5 | 258 71 69.3 14.4 34 150 13770 275 65 64.8 -5.7 | 270 36 36.4 0.2 35 144 14021 275 72 71.7 -6.3 | 271 43 43.4 -0.4 36 137 14326 260 60 59.1 10.4 | 242 35 30.7 16.3 37 124 14935 265 70 69.7 6.1 | 254 43 41.4 12.0 38 118 15240 270 61 61.0 -0.0 | 260 33 32.6 5.9 39 107 15850 260 50 49.2 8.7 | 235 25 20.9 14.6 40 102 16154 245 57 51.7 24.1 | 218 38 23.3 30.0 41 100 16290 255 68 65.7 17.6 | 238 44 37.3 23.5 42 97 16459 255 68 65.7 17.6 | 238 44 37.3 23.5 43 92 16764 260 70 68.9 12.2 | 246 44 40.6 18.0 44 76 17983 305 30 24.6 -17.2 | 18 12 -3.8 -11.3 45 72 18288 290 35 32.9 -12.0 | 323 8 4.5 -6.1 46 70 18440 255 18 17.4 4.7 | 134 15 -11.0 10.5 47 68 18593 285 23 22.2 -6.0 | 89 6 -6.1 -0.1 48 65 18898 240 20 17.3 10.0 | 145 19 -11.0 15.9 49 62 19202 245 17 15.4 7.2 | 135 18 -13.0 13.1 50 59 19507 225 16 11.3 11.3 | 135 24 -17.0 17.2 51 56 19812 235 23 18.8 13.2 | 153 21 -9.5 19.1 52 53 20117 210 24 12.0 20.8 | 148 31 -16.4 26.7 53 51 20422 230 25 19.2 16.1 | 157 24 -9.2 22.0 54 50 20510 235 35 28.7 20.1 | 181 26 0.3 26.0 55 48 20726 235 35 28.7 20.1 | 181 26 0.3 26.0 56 44 21336 245 28 25.4 11.8 | 170 18 -3.0 17.7 57 42 21641 260 26 25.6 4.5 | 165 11 -2.8 10.4 58 40 21946 245 25 22.7 10.6 | 161 17 -5.7 16.4 59 38 22250 270 28 28.0 -0.0 | 176 6 -0.4 5.9 60 36 22555 260 25 24.6 4.3 | 160 11 -3.7 10.2 61 34 22860 290 20 18.8 -6.8 | 84 10 -9.6 -1.0 62 31 23470 265 15 14.9 1.3 | 118 15 -13.4 7.2 63 30 23690 260 14 13.8 2.4 | 120 17 -14.6 8.3 64 28 24079 270 15 15.0 -0.0 | 114 15 -13.4 5.9 65 27 24384 230 19 14.6 12.2 | 143 23 -13.8 18.1 66 23 25298 215 29 16.6 23.8 | 158 32 -11.7 29.6 67 22 25603 225 34 24.0 24.0 | 172 30 -4.3 29.9 68 21 25908 240 25 21.7 12.5 | 160 20 -6.7 18.4 69 20 26200 230 30 23.0 19.3 | 168 26 -5.4 25.2 70 20 26213 230 29 22.2 18.6 | 166 25 -6.1 24.5 71 18 26822 235 30 24.6 17.2 | 171 23 -3.8 23.1 72 17 27127 205 22 9.3 19.9 | 144 32 -19.1 25.8 73 16 27432 215 16 9.2 13.1 | 135 27 -19.2 19.0 74 15 28042 210 20 10.0 17.3 | 142 30 -18.4 23.2 75 14 28346 255 31 29.9 8.0 | 186 14 1.6 13.9 76 14 28651 255 30 29.0 7.8 | 183 14 0.6 13.6 77 13 28956 285 40 38.6 -10.4 | 294 11 10.3 -4.5 78 12 29261 295 35 31.7 -14.8 | 339 10 3.4 -8.9 79 11 30175 270 25 25.0 -0.0 | 150 7 -3.4 5.9 80 10 30540 270 32 32.0 -0.0 | 212 7 3.6 5.9 Wind Parameters Mean winds (0-6000m): 251.7 at 38.6 knts Storm direction: 281.7 at 29.0 knts Shear (0-3000m) pos: 7.1 neg: 0.5 tot: 7.6 10-3/s Storm rel Dir Shear (0-3000m): 117.6 deg Storm rel helicity (0-3000m) pos: 470.9 neg: -11.1 tot: 459.8 m^2/s^2 ave: 153.3 10^-3 m/s^2 rel: 0.63 Storm rel vorticity (0-3000m) horiz: 14.5 stream: 9.2 10^-3/s Energy-Hel index: 0.06 Bulk Rich Number: 0.13 Bulk Shear: 164.71 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 ------------------------------------------------------------------------------- 500 188 23 138 38| 27.9 0.0 27.9|298.3 0.0 298.3 596.7 0.94| 32.0 30.2 1000 206 29 154 36| 17.6 0.0 17.6|418.4 0.0 418.4 418.4 0.87| 25.0 21.7 1500 218 30 162 31| 11.0 0.0 11.0|426.1 -0.5 425.6 283.7 0.73| 20.2 14.8 2000 226 30 167 28| 8.9 0.0 8.9|441.7 -0.5 441.2 220.6 0.71| 17.1 12.1 2500 232 31 170 25| 7.1 0.6 7.8|447.9 -11.1 436.8 174.7 0.63| 14.9 9.4 3000 237 31 174 23| 7.1 0.5 7.6|470.9 -11.1 459.8 153.3 0.63| 14.5 9.2 4000 248 33 186 19| 5.3 0.9 6.2|478.1 -20.9 457.2 114.3 0.58| 11.9 6.9 5000 249 35 193 19| 5.0 1.7 6.8|521.1 -58.7 462.4 92.5 0.46| 11.5 5.3 6000 252 39 205 20| 5.8 1.4 7.2|623.3 -58.7 564.6 94.1 0.49| 11.2 5.5 Wrote GIF file: /home/apache/climate/data/raob//KIAD/skewt/KIAD.skewt.20251221.00.gif