UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025120900.upa.cvt Date: 0000Z 9 DEC 25 Searching for KIAD... Searching the city database file for: KIAD ... Date:0000Z 9 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 1015 98 -1.9 -15.9 33 14.0 -5.5 5 11 270.1 270.3 266.8 273.2 1.09 1 1010 135 -2.5 -18.5 28 16.0 -6.3 7 13 269.9 270.0 266.3 272.4 0.88 2 1000 208 -3.3 -19.3 28 16.0 -7.0 10 18 269.9 270.0 266.2 272.2 0.83 3 925 817 -9.1 -18.1 48 9.0 -11.1 30 14 270.0 270.2 266.5 272.8 0.99 4 916 892 -9.9 -18.9 48 9.0 -11.8 34 13 269.9 270.1 266.4 272.6 0.94 5 893 1088 -11.1 -17.1 61 6.0 -12.4 61 14 270.7 270.9 267.3 273.8 1.12 6 883 1174 -11.5 -22.5 40 11.0 -13.6 73 14 271.1 271.2 266.8 273.2 0.71 7 877 1227 -11.5 -25.5 30 14.0 -13.9 80 14 271.7 271.7 266.9 273.3 0.55 8 866 1324 -10.5 -40.5 7 30.0 -14.1 78 14 273.7 273.7 267.4 274.1 0.13 9 850 1467 -10.3 -42.3 5 32.0 -14.0 75 13 275.4 275.4 268.5 275.7 0.11 10 841 1549 -9.9 -44.9 4 35.0 -13.8 68 10 276.6 276.6 269.2 276.9 0.08 11 832 1632 -10.1 -46.1 3 36.0 -14.0 63 9 277.3 277.3 269.6 277.5 0.07 12 822 1725 -10.7 -46.7 3 36.0 -14.5 57 8 277.6 277.6 269.8 277.8 0.07 13 811 1829 -11.5 -45.5 4 34.0 -15.2 50 7 277.8 277.8 269.9 278.1 0.08 14 808 1857 -11.5 -28.5 23 17.0 -14.3 45 8 278.1 278.2 270.8 279.5 0.45 15 795 1981 -12.1 -20.1 51 8.0 -13.8 23 11 278.8 278.9 272.1 281.6 0.97 16 794 1991 -12.1 -21.1 47 9.0 -14.0 21 11 278.9 279.0 272.0 281.5 0.89 17 792 2010 -11.5 -21.5 43 10.0 -13.6 17 12 279.7 279.8 272.5 282.3 0.87 18 790 2030 -11.3 -20.3 47 9.0 -13.3 14 12 280.1 280.3 272.9 283.0 0.96 19 787 2059 -11.7 -20.7 47 9.0 -13.6 9 13 280.0 280.1 272.8 282.8 0.93 20 779 2137 -11.7 -16.5 68 4.8 -12.9 355 15 280.8 281.0 273.9 284.8 1.35 21 778 2147 -11.5 -15.4 73 3.9 -12.5 354 15 281.1 281.4 274.3 285.5 1.48 22 773 2196 -11.1 -14.6 75 3.5 -12.1 352 15 282.1 282.3 274.9 286.7 1.59 23 761 2317 -11.3 -14.0 80 2.7 -12.1 346 14 283.1 283.4 275.7 288.1 1.70 24 753 2398 -10.1 -12.5 83 2.4 -10.8 342 14 285.3 285.6 277.2 291.0 1.94 25 751 2418 -10.1 -12.4 83 2.3 -10.8 341 14 285.5 285.8 277.3 291.3 1.96 26 730 2636 -11.5 -12.7 91 1.2 -11.9 314 11 286.3 286.6 277.7 292.1 1.97 27 700 2957 -13.3 -14.7 89 1.4 -13.7 280 13 287.8 288.1 278.1 293.0 1.74 28 668 3312 -15.1 -17.0 85 1.9 -15.6 279 20 289.6 289.9 278.7 294.2 1.51 29 574 4442 -22.9 -25.3 81 2.4 -23.3 260 16 293.3 293.5 279.6 296.0 0.85 30 548 4780 -25.7 -27.4 86 1.7 -25.9 264 15 293.9 294.0 279.7 296.2 0.74 31 539 4900 -26.5 -28.7 82 2.2 -26.8 260 14 294.3 294.5 279.8 296.5 0.66 32 500 5440 -29.5 -32.4 76 2.9 -29.9 255 20 297.1 297.2 280.8 298.7 0.50 33 491 5569 -30.1 -33.3 74 3.2 -30.4 241 22 297.9 298.0 281.1 299.4 0.47 34 480 5730 -31.1 -34.0 76 2.9 -31.4 244 24 298.6 298.7 281.4 300.1 0.45 35 442 6307 -36.1 -38.4 79 2.3 -36.3 247 30 299.4 299.5 281.5 300.5 0.31 36 401 6973 -42.1 -46.0 66 3.9 -42.3 235 35 300.1 300.1 281.6 300.6 0.15 37 400 6990 -42.3 -46.2 66 3.9 -42.5 235 35 300.0 300.0 281.5 300.5 0.15 38 395 7075 -43.1 -46.4 70 3.3 -43.3 234 35 300.1 300.1 281.5 300.6 0.15 39 393 7109 -43.5 -47.8 62 4.3 -43.7 234 36 300.0 300.0 281.5 300.4 0.13 40 383 7282 -44.9 -46.7 82 1.8 -45.0 233 36 300.3 300.4 281.7 300.9 0.15 41 377 7388 -45.9 -48.6 74 2.7 -46.0 232 37 300.4 300.4 281.7 300.8 0.12 42 369 7531 -46.9 -47.9 89 1.0 -46.9 231 38 300.9 300.9 281.9 301.4 0.14 43 367 7567 -47.1 -49.1 80 2.0 -47.1 230 38 301.1 301.1 282.0 301.5 0.12 44 365 7603 -47.5 -48.7 87 1.2 -47.6 230 38 301.0 301.1 282.0 301.5 0.13 45 364 7621 -47.7 -49.3 83 1.6 -47.7 230 40 301.0 301.0 282.0 301.4 0.12 46 363 7639 -47.7 -49.7 80 2.0 -47.8 230 41 301.2 301.3 282.0 301.6 0.11 47 361 7676 -47.7 -55.7 39 8.0 -47.9 230 42 301.7 301.7 282.1 301.9 0.06 48 359 7712 -47.7 -66.7 9 19.0 -48.0 231 43 302.2 302.2 282.3 302.3 0.01 49 356 7768 -47.5 -60.5 21 13.0 -47.8 231 44 303.2 303.2 282.7 303.3 0.03 50 349 7899 -47.5 -60.5 21 13.0 -47.8 232 48 304.9 304.9 283.4 305.0 0.03 51 342 8034 -46.7 -69.7 6 23.0 -47.1 233 52 307.8 307.8 284.5 307.8 0.01 52 312 8647 -44.1 -71.1 3 27.0 -44.7 238 69 319.6 319.6 288.6 319.6 0.01 53 300 8910 -44.9 -69.9 4 25.0 -45.4 245 74 322.1 322.1 289.4 322.1 0.01 54 286 9228 -45.5 -70.5 4 25.0 -46.0 247 76 325.6 325.6 290.5 325.7 0.01 55 269 9638 -42.5 -74.5 2 32.0 -43.3 257 79 335.8 335.8 293.3 335.8 0.01 56 257 9945 -43.7 -75.7 2 32.0 -44.5 257 85 338.4 338.4 293.9 338.4 0.01 57 250 10130 -42.7 -76.7 1 34.0 -43.5 255 90 342.6 342.6 295.0 342.6 0.00 58 200 11610 -49.7 -79.7 2 30.0 -50.2 260 93 354.1 354.1 297.5 354.1 0.00 59 150 13470 -56.1 -85.1 1 29.0 -56.4 255 90 373.4 373.4 301.2 373.4 0.00 60 131 14324 -58.5 -85.8 2 27.3 -58.8 255 109 383.9 383.9 302.9 383.9 0.00 61 100 16000 -63.3 -87.3 2 24.0 -63.5 260 93 405.4 405.4 305.9 405.4 0.00 62 98 16124 -63.9 -86.9 3 23.0 -64.1 260 93 406.6 406.6 306.1 406.6 0.00 63 86 16926 -63.9 -87.9 2 24.0 -64.1 264 89 422.1 422.1 308.0 422.1 0.00 64 79 17449 -61.7 -87.7 2 26.0 -62.0 265 74 437.0 437.0 309.6 437.0 0.00 65 71 18104 -66.3 -89.3 3 23.0 -66.5 265 72 440.8 440.8 310.0 440.8 0.00 66 70 18190 -65.7 -89.7 2 24.0 -65.9 265 74 443.8 443.8 310.3 443.8 0.00 67 68 18367 -63.3 -89.3 2 26.0 -63.6 261 70 452.7 452.7 311.1 452.7 0.00 68 64 18741 -60.3 -89.3 1 29.0 -60.7 267 59 467.2 467.2 312.4 467.2 0.00 69 60 19140 -62.1 -89.1 2 27.0 -62.5 266 50 471.9 471.9 312.8 471.9 0.00 70 57 19457 -61.1 -89.1 1 28.0 -61.6 261 52 481.1 481.1 313.5 481.1 0.00 71 54 19791 -62.3 -89.3 2 27.0 -62.7 260 48 485.9 485.9 313.9 485.9 0.00 72 52 20025 -59.7 -89.7 1 30.0 -60.3 260 43 497.2 497.2 314.8 497.2 0.00 73 50 20270 -59.5 -88.5 1 29.0 -60.1 260 39 503.3 503.3 315.2 503.3 0.00 74 47 20658 -58.9 -88.9 1 30.0 -59.6 264 37 513.7 513.7 315.9 513.7 0.00 75 40 21664 -62.3 -90.3 1 28.0 -62.9 253 35 529.4 529.4 316.9 529.4 0.00 76 35 22494 -59.9 -89.9 1 30.0 -60.7 265 40 556.3 556.3 318.5 556.3 0.00 77 35 22494 -57.9 -88.9 1 31.0 -58.9 265 40 561.5 561.5 318.7 561.5 0.00 78 32 23056 -60.7 -89.7 1 29.0 -61.5 252 42 568.6 568.6 319.1 568.6 0.00 79 30 23460 -58.9 -89.9 1 31.0 -59.9 260 35 584.1 584.1 319.9 584.1 0.00 80 28 23893 -57.9 -88.9 1 31.0 -59.2 256 38 598.5 598.5 320.5 598.5 0.01 81 27 24121 -58.9 -88.9 1 30.0 -60.0 256 39 601.9 601.9 320.7 602.0 0.01 82 26 24358 -56.3 -88.3 1 32.0 -57.9 260 38 615.9 615.9 321.3 615.9 0.01 83 24 24864 -57.1 -88.1 1 31.0 -58.6 283 29 627.8 627.8 321.8 627.8 0.01 84 22 25414 -56.9 -87.9 1 31.0 -58.6 262 30 644.2 644.2 322.4 644.3 0.01 85 20 26020 -54.3 -87.3 1 33.0 -56.6 250 20 670.0 670.0 323.4 670.0 0.01 86 15 27877 -51.3 -85.3 1 34.0 -55.1 247 27 737.4 737.4 325.6 737.5 0.02 87 15 27877 -51.3 -85.3 1 34.0 -55.1 247 27 737.4 737.4 325.6 737.5 0.02 88 14 28325 -52.3 -86.3 1 34.0 -56.0 265 31 748.7 748.7 325.9 748.8 0.02 89 12 29330 -48.7 -84.7 1 36.0 -54.1 263 36 795.2 795.2 327.1 795.4 0.03 90 10 30530 -48.3 -84.3 1 36.0 -54.5 270 26 839.3 839.3 328.2 839.6 0.03 91 7.9 32066 -52.3 -86.3 1 34.0 -57.6 260 23 881.8 881.8 329.1 882.1 0.03 92 7.1 32758 -50.7 -85.7 1 35.0 -57.1 256 22 915.7 915.8 329.7 916.1 0.04 93 7.0 32850 -51.1 -86.1 1 35.0 -57.3 255 22 917.8 917.8 329.8 918.1 0.03 94 6.9 32944 -51.5 -86.5 1 35.0 -57.6 919.9 920.0 329.8 920.2 0.03 95 6.2 33646 -46.7 -84.7 1 38.0 -55.6 969.1 969.1 330.7 969.6 0.05 TRP 364 7621 -47.7 -49.3 83 1.6 -47.7 230 40 301.0 301.0 282.0 301.4 0.12 WND 131 14324 -58.5 -85.8 2 27.3 -58.8 255 109 383.9 383.9 302.9 383.9 0.00 Sounding variables and indices 1000-500 mb thick: 5232.00 m Freezing level: Surface below freezing Wetbulb zero: Below ground Precipitable water: 0.22 inches Sfc-500 mean rel hum: 63.86 % Est. max temperature: 1.80 C = 35.25 F Sfc-Lift cond lev (LCL): 813.51 mb = 1804.92 m = 5921.58 ft T: -11.32 C 700-500 lapse rate: 6.52 C/km ThetaE index: 0.95 C Layer 1010.0- 925.0 mb Conv cond level (CCL): 555.52 mb = 4680.98 m = 15357.38 ft Mean mixing ratio: 0.91 g/kg Conv temperature: 21.83 C = 71.29 F Cap Strength: 18.60 C Lifted Index: 20.34 C Risk: None Lifted Index @300 mb: 35.12 C Lifted Index @700 mb: 15.16 C Showalter Index: 17.82 C Risk: None Total Totals Index: 6.40 C Risk: None Vertical Totals Index: 19.20 C Cross Totals Index: -12.80 C K Index: -24.50 Risk: None Sweat Index: 46.00 Risk: None Energy Index: 4.90 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 0.22 J/kg Max Up Vert Vel: 0.66 m/s Conv Inhibition (B-): 80343.34 J/kg Cap Strength: 19.93 C Lift Cond Lev (LCL): 788.84 mb = 2040.84 m = 6695.60 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 319 at 12 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 1015 98 5 11 -1.0 -11.0 | 79 9 -8.9 -1.8 1 1000 208 10 18 -3.1 -17.7 | 52 14 -11.1 -8.5 2 988 305 15 17 -4.4 -16.4 | 60 14 -12.3 -7.2 3 950 610 20 15 -5.1 -14.1 | 69 14 -13.1 -4.9 4 925 817 30 14 -7.0 -12.1 | 79 15 -14.9 -2.9 5 913 914 35 13 -7.5 -10.6 | 85 15 -15.4 -1.5 6 878 1219 80 14 -13.8 -2.4 | 107 23 -21.7 6.8 7 850 1467 75 13 -12.6 -3.4 | 106 21 -20.5 5.8 8 844 1524 70 10 -9.4 -3.4 | 108 18 -17.3 5.8 9 811 1829 50 7 -5.4 -4.5 | 109 14 -13.3 4.7 10 779 2134 355 15 1.3 -14.9 | 49 9 -6.6 -5.7 11 749 2438 340 14 4.8 -13.2 | 38 5 -3.1 -4.0 12 720 2743 300 10 8.7 -5.0 | 190 4 0.7 4.2 13 700 2957 280 13 12.8 -2.3 | 215 8 4.9 6.9 14 691 3048 275 14 13.9 -1.2 | 217 10 6.0 8.0 15 663 3353 280 21 20.7 -3.6 | 246 14 12.7 5.5 16 637 3658 275 19 18.9 -1.7 | 236 13 11.0 7.5 17 611 3962 280 20 19.7 -3.5 | 244 13 11.8 5.7 18 586 4267 250 16 15.0 5.5 | 206 16 7.1 14.7 19 562 4572 270 16 16.0 -0.0 | 221 12 8.1 9.2 20 540 4877 260 14 13.8 2.4 | 207 13 5.9 11.6 21 500 5440 255 20 19.3 5.2 | 218 18 11.4 14.4 22 497 5486 240 21 18.2 10.5 | 208 22 10.3 19.7 23 455 6096 250 29 27.3 9.9 | 225 27 19.3 19.1 24 400 6990 235 35 28.7 20.1 | 215 36 20.7 29.3 25 364 7620 230 38 29.1 24.4 | 212 40 21.2 33.6 26 364 7621 230 40 30.6 25.7 | 213 42 22.7 34.9 27 303 8839 240 74 64.1 37.0 | 231 73 56.2 46.2 28 300 8910 245 74 67.1 31.3 | 236 72 59.1 40.5 29 290 9144 245 75 68.0 31.7 | 236 73 60.0 40.9 30 264 9754 260 80 78.8 13.9 | 252 75 70.9 23.1 31 250 10130 255 90 86.9 23.3 | 248 85 79.0 32.5 32 210 11278 260 105 103.4 18.2 | 254 99 95.5 27.4 33 200 11610 260 93 91.6 16.1 | 253 87 83.7 25.3 34 192 11887 260 92 90.6 16.0 | 253 86 82.7 25.2 35 174 12497 250 109 102.4 37.3 | 244 105 94.5 46.5 36 151 13411 260 87 85.7 15.1 | 253 81 77.7 24.3 37 150 13470 255 90 86.9 23.3 | 248 85 79.0 32.5 38 131 14324 255 109 105.3 28.2 | 249 104 97.4 37.4 39 125 14630 255 109 105.3 28.2 | 249 104 97.4 37.4 40 113 15240 260 96 94.5 16.7 | 253 90 86.6 25.9 41 108 15545 260 90 88.6 15.6 | 253 84 80.7 24.8 42 100 16000 260 93 91.6 16.1 | 253 87 83.7 25.3 43 98 16154 260 93 91.6 16.1 | 253 87 83.7 25.3 44 84 17069 265 88 87.7 7.7 | 258 81 79.7 16.9 45 76 17678 265 65 64.8 5.7 | 255 59 56.8 14.9 46 70 18190 265 74 73.7 6.4 | 257 68 65.8 15.6 47 69 18288 260 72 70.9 12.5 | 251 67 63.0 21.7 48 62 18898 270 54 54.0 -0.0 | 259 47 46.1 9.2 49 59 19202 265 49 48.8 4.3 | 252 43 40.9 13.5 50 57 19507 260 53 52.2 9.2 | 247 48 44.3 18.4 51 50 20270 260 39 38.4 6.8 | 242 34 30.5 16.0 52 46 20726 265 37 36.9 3.2 | 247 31 28.9 12.4 53 44 21031 255 28 27.0 7.2 | 229 25 19.1 16.4 54 42 21336 250 30 28.2 10.3 | 226 28 20.3 19.5 55 38 21946 255 40 38.6 10.4 | 238 36 30.7 19.5 56 36 22250 270 39 39.0 -0.0 | 254 32 31.1 9.2 57 31 23165 250 42 39.5 14.4 | 233 39 31.5 23.6 58 30 23460 260 35 34.5 6.1 | 240 31 26.5 15.3 59 27 24079 255 39 37.7 10.1 | 237 35 29.7 19.3 60 26 24384 260 38 37.4 6.6 | 242 33 29.5 15.8 61 25 24689 290 28 26.3 -9.6 | 271 18 18.4 -0.4 62 21 25603 255 31 29.9 8.0 | 232 28 22.0 17.2 63 20 25908 270 32 32.0 -0.0 | 249 26 24.1 9.2 64 20 26020 250 20 18.8 6.8 | 214 19 10.9 16.0 65 19 26213 250 26 24.4 8.9 | 222 24 16.5 18.1 66 18 26822 245 25 22.7 10.6 | 217 25 14.7 19.8 67 16 27432 270 19 19.0 -0.0 | 230 14 11.1 9.2 68 15 27737 250 24 22.6 8.2 | 220 23 14.6 17.4 69 15 28042 245 30 27.2 12.7 | 221 29 19.3 21.9 70 14 28346 265 31 30.9 2.7 | 243 26 22.9 11.9 71 12 29261 260 37 36.4 6.4 | 241 33 28.5 15.6 72 11 29870 285 29 28.0 -7.5 | 265 20 20.1 1.7 73 11 30175 270 21 21.0 -0.0 | 235 16 13.1 9.2 74 10 30530 270 26 26.0 -0.0 | 243 20 18.1 9.2 75 7 32850 255 22 21.3 5.7 | 222 20 13.3 14.9 Wind Parameters Mean winds (0-6000m): 289.2 at 16.2 knts Storm direction: 319.2 at 12.1 knts Shear (0-3000m) pos: 1.8 neg: 4.0 tot: 5.8 10-3/s Storm rel Dir Shear (0-3000m): 144.2 deg Storm rel helicity (0-3000m) pos: 78.9 neg: -53.8 tot: 25.1 m^2/s^2 ave: 8.4 10^-3 m/s^2 rel: 0.08 Storm rel vorticity (0-3000m) horiz: 11.6 stream: 0.9 10^-3/s Energy-Hel index: 0.00 Bulk Rich Number: 0.00 Bulk Shear: 62.59 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 14 16 62 13| 5.4 0.0 5.4| 13.9 -13.6 0.3 0.6 -0.11| 10.9 -1.2 1000 24 15 72 15| 6.2 0.0 6.2| 49.6 -13.6 36.0 36.0 0.33| 10.9 3.6 1500 38 14 83 17| 3.5 0.0 3.5| 71.0 -14.9 56.1 37.4 0.35| 10.4 3.7 2000 38 13 86 16| 2.6 3.3 6.0| 72.0 -47.5 24.5 12.3 0.01| 11.5 0.2 2500 26 13 79 14| 2.1 3.5 5.6| 72.2 -53.8 18.4 7.4 0.01| 11.6 0.1 3000 14 13 73 12| 1.8 4.0 5.8| 78.9 -53.8 25.1 8.4 0.08| 11.6 0.9 4000 336 15 25 5| 0.9 3.0 3.9| 97.5 -75.9 21.7 5.4 0.06| 10.4 0.7 5000 313 15 287 3| 0.8 2.5 3.3|114.1-104.1 10.0 2.0 0.02| 9.9 0.2 6000 289 16 242 8| 0.5 2.6 3.1|169.5-122.5 47.0 7.8 0.07| 9.8 0.7 Wrote GIF file: /home/apache/climate/data/raob//KIAD/skewt/KIAD.skewt.20251209.00.gif