UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025122700.upa.cvt Date: 0000Z 27 DEC 25 Searching for KIAD... Searching the city database file for: KIAD ... Date:0000Z 27 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 1002 98 2.0 -6.0 55 8.0 -0.9 160 10 275.0 275.4 272.2 281.7 2.43 1 1000 104 1.8 -7.2 51 9.0 -1.3 170 9 275.0 275.3 271.8 281.1 2.22 2 934 649 -2.5 -8.5 63 6.0 -4.5 198 32 276.0 276.3 272.3 282.0 2.15 3 925 726 -2.1 -9.1 59 7.0 -4.4 205 37 277.2 277.5 272.9 283.0 2.07 4 916 804 -1.7 -10.7 50 9.0 -4.6 209 41 278.3 278.7 273.2 283.6 1.84 5 906 891 -0.7 -16.7 29 16.0 -5.1 214 46 280.3 280.4 273.2 283.6 1.14 6 905 900 -0.3 -17.3 26 17.0 -5.0 214 46 280.8 280.9 273.4 284.0 1.09 7 903 918 0.2 -14.8 31 15.0 -4.3 215 47 281.4 281.7 274.2 285.4 1.34 8 901 936 0.8 -15.2 29 16.0 -4.0 216 48 282.2 282.5 274.6 286.1 1.30 9 897 972 0.8 -14.2 32 15.0 -3.8 218 49 282.6 282.8 275.0 286.8 1.42 10 893 1007 1.0 -23.0 15 24.0 -5.0 220 50 283.2 283.3 274.1 285.2 0.67 11 890 1035 1.2 -12.8 34 14.0 -3.3 221 50 283.6 283.9 275.8 288.4 1.60 12 887 1062 1.0 -10.0 44 11.0 -2.8 222 51 283.7 284.1 276.5 289.6 2.01 13 881 1116 1.2 -10.8 40 12.0 -2.9 225 52 284.5 284.8 276.7 290.0 1.90 14 878 1144 1.6 -4.4 64 6.0 -0.8 226 53 285.2 285.7 278.7 294.2 3.14 15 877 1153 1.8 -2.7 72 4.5 -0.1 227 53 285.5 286.1 279.4 295.7 3.57 16 876 1162 2.4 1.2 92 1.2 1.8 227 54 286.2 287.0 281.2 299.7 4.76 17 874 1181 3.2 2.7 97 0.5 2.9 228 54 287.2 288.1 282.3 302.3 5.32 18 868 1237 3.6 3.4 99 0.2 3.5 232 55 288.2 289.2 283.1 304.2 5.63 19 864 1274 6.6 5.4 92 1.2 5.9 236 55 291.7 292.9 285.4 310.4 6.52 20 855 1361 8.6 6.9 89 1.7 7.6 245 55 294.7 296.0 287.3 315.8 7.31 21 850 1409 8.2 6.9 91 1.3 7.5 250 55 294.7 296.1 287.4 316.0 7.36 22 819 1716 7.4 7.4 100 0.0 7.4 259 56 297.0 298.5 288.8 320.1 7.91 23 701 2985 0.8 0.8 100 0.0 0.8 280 46 303.2 304.3 289.0 320.7 5.79 24 700 2997 0.8 0.8 100 0.0 0.8 280 46 303.4 304.4 289.0 320.9 5.80 25 628 3860 -5.5 -5.5 100 0.0 -5.5 287 51 305.7 306.5 288.2 318.2 4.04 26 627 3873 -5.9 -11.9 63 6.0 -8.1 287 52 305.4 305.9 286.4 313.1 2.45 27 626 3885 -5.9 -13.9 53 8.0 -8.7 287 52 305.6 305.9 286.1 312.2 2.08 28 623 3923 -5.7 -13.7 53 8.0 -8.5 287 53 306.2 306.6 286.4 313.0 2.13 29 617 3999 -5.5 -14.5 49 9.0 -8.6 288 54 307.3 307.7 286.6 313.7 2.01 30 616 4012 -5.5 -15.5 45 10.0 -8.9 288 55 307.4 307.8 286.5 313.4 1.86 31 611 4076 -5.7 -19.7 32 14.0 -9.9 288 56 307.9 308.2 286.1 312.2 1.31 32 607 4128 -5.5 -15.5 45 10.0 -8.9 289 57 308.7 309.1 287.0 314.8 1.88 33 599 4232 -5.9 -15.9 45 10.0 -9.2 290 60 309.4 309.8 287.2 315.4 1.85 34 569 4633 -8.9 -16.9 52 8.0 -11.5 284 63 310.5 310.8 287.5 316.3 1.79 35 551 4881 -10.9 -20.9 44 10.0 -13.7 280 64 311.0 311.2 287.2 315.3 1.31 36 526 5237 -14.1 -22.1 51 8.0 -16.2 285 66 311.3 311.5 287.2 315.4 1.24 37 522 5295 -14.5 -27.5 32 13.0 -17.4 285 66 311.5 311.6 286.8 314.1 0.77 38 516 5382 -15.3 -28.3 32 13.0 -18.0 287 67 311.6 311.7 286.8 314.0 0.72 39 510 5471 -15.9 -34.9 18 19.0 -19.2 288 67 311.9 312.0 286.5 313.2 0.39 40 500 5620 -17.1 -36.1 18 19.0 -20.2 290 68 312.2 312.3 286.5 313.4 0.35 41 499 5635 -17.3 -36.3 17 19.0 -20.4 290 68 312.1 312.2 286.5 313.3 0.34 42 483 5877 -19.5 -36.5 21 17.0 -22.1 290 70 312.3 312.4 286.6 313.6 0.35 43 470 6079 -20.5 -44.5 10 24.0 -23.4 290 71 313.5 313.6 286.8 314.1 0.16 44 467 6126 -19.5 -52.5 4 33.0 -22.8 290 72 315.4 315.4 287.3 315.6 0.06 45 442 6533 -20.5 -56.5 2 36.0 -23.8 290 80 319.1 319.1 288.5 319.3 0.04 46 400 7260 -26.7 -58.7 3 32.0 -28.9 285 86 320.3 320.3 288.9 320.4 0.03 47 361 7989 -32.5 -59.5 5 27.0 -34.0 286 94 322.1 322.1 289.4 322.2 0.03 48 345 8307 -33.3 -64.3 3 31.0 -34.8 287 95 325.2 325.2 290.3 325.3 0.02 49 300 9270 -41.3 -63.3 7 22.0 -42.1 285 96 327.2 327.2 290.9 327.3 0.03 50 293 9430 -42.9 -64.9 7 22.0 -43.6 286 98 327.1 327.1 290.9 327.2 0.02 51 279 9758 -45.7 -63.7 11 18.0 -46.2 288 101 327.7 327.7 291.1 327.8 0.03 52 270 9976 -47.5 -59.5 24 12.0 -47.9 289 103 328.1 328.2 291.2 328.3 0.05 53 258 10275 -50.1 -63.1 20 13.0 -50.4 287 101 328.6 328.6 291.3 328.7 0.03 54 256 10326 -50.5 -66.5 13 16.0 -50.8 287 101 328.8 328.8 291.4 328.8 0.02 55 250 10480 -51.3 -65.3 17 14.0 -51.6 285 99 329.8 329.8 291.7 329.9 0.02 56 244 10638 -52.7 -63.7 25 11.0 -52.9 286 98 330.0 330.0 291.7 330.1 0.03 57 216 11417 -58.5 -71.5 17 13.0 -58.6 288 95 332.7 332.7 292.4 332.8 0.01 58 200 11900 -60.1 -74.1 14 14.0 -60.2 290 93 337.6 337.6 293.7 337.6 0.01 59 186 12351 -61.3 -75.3 14 14.0 -61.4 295 87 342.7 342.7 295.0 342.8 0.01 60 151 13649 -59.9 -84.6 3 24.7 -60.2 290 111 366.1 366.1 299.9 366.1 0.00 61 150 13690 -59.9 -84.9 2 25.0 -60.1 290 110 366.9 366.9 300.0 366.9 0.00 62 100 16190 -63.5 -87.5 2 24.0 -63.7 290 71 405.0 405.0 305.9 405.0 0.00 63 77 17782 -67.7 -88.7 3 21.0 -67.8 280 40 427.7 427.7 308.6 427.7 0.00 64 73 18105 -65.5 -88.5 3 23.0 -65.7 280 44 439.0 439.0 309.8 439.0 0.00 65 72 18189 -66.3 -89.3 3 23.0 -66.5 280 45 439.0 439.0 309.8 439.0 0.00 66 70 18360 -65.1 -89.1 2 24.0 -65.3 290 44 445.1 445.1 310.4 445.1 0.00 67 68 18536 -64.7 -88.7 2 24.0 -65.0 294 44 449.7 449.7 310.8 449.7 0.00 68 68 18536 -64.5 -88.5 2 24.0 -64.7 294 44 450.1 450.1 310.8 450.1 0.00 69 50 20390 -69.5 -90.5 3 21.0 -69.6 300 39 479.7 479.7 313.4 479.7 0.00 70 49 20511 -69.5 -90.5 3 21.0 -69.6 314 36 482.5 482.5 313.7 482.5 0.00 71 46 20890 -67.5 -90.5 2 23.0 -67.7 301 34 496.1 496.1 314.7 496.1 0.00 72 43 21294 -70.1 -91.1 3 21.0 -70.3 305 32 499.4 499.4 314.9 499.4 0.00 73 42 21435 -68.7 -91.7 2 23.0 -68.9 298 34 506.2 506.2 315.4 506.2 0.00 74 41 21580 -66.5 -90.5 2 24.0 -66.8 288 36 515.2 515.2 316.0 515.2 0.00 75 40 21729 -66.7 -90.7 2 24.0 -67.0 288 37 518.4 518.4 316.2 518.4 0.00 76 40 21729 -64.3 -90.3 2 26.0 -64.7 288 37 524.4 524.4 316.6 524.4 0.00 77 39 21885 -63.9 -89.9 2 26.0 -64.4 293 37 529.2 529.2 316.9 529.2 0.00 78 38 22043 -65.3 -90.3 2 25.0 -65.7 288 37 529.6 529.6 316.9 529.6 0.00 79 33 22907 -63.5 -89.5 2 26.0 -64.1 289 41 556.2 556.2 318.4 556.2 0.00 80 31 23289 -65.5 -90.5 2 25.0 -66.0 287 41 560.8 560.8 318.7 560.8 0.00 81 30 23490 -63.1 -91.1 1 28.0 -63.7 275 39 572.6 572.6 319.3 572.6 0.00 82 29 23699 -61.9 -89.9 1 28.0 -62.7 268 40 581.5 581.5 319.8 581.5 0.00 83 27 24140 -62.7 -89.7 1 27.0 -63.4 256 44 591.3 591.3 320.2 591.3 0.00 84 24 24872 -59.1 -89.1 1 30.0 -60.3 270 56 622.0 622.0 321.6 622.0 0.01 85 21 25706 -60.7 -88.7 1 28.0 -61.9 255 54 641.4 641.4 322.3 641.4 0.01 86 20 26010 -60.1 -89.1 1 29.0 -61.4 265 52 652.2 652.2 322.7 652.3 0.01 87 17 27026 -59.9 -88.9 1 29.0 -61.4 270 62 683.9 683.9 323.9 683.9 0.01 88 17 27026 -58.1 -88.1 1 30.0 -59.9 270 62 689.7 689.7 324.1 689.7 0.01 89 16 27410 -56.5 -87.5 1 31.0 -58.7 265 56 706.9 706.9 324.7 707.0 0.01 90 15 27819 -57.1 -88.1 1 31.0 -59.3 262 61 718.1 718.1 325.0 718.2 0.01 91 15 27819 -55.9 -86.9 1 31.0 -58.5 262 61 722.1 722.1 325.1 722.2 0.01 92 13 28729 -56.9 -87.9 1 31.0 -59.5 250 69 748.8 748.8 325.9 748.9 0.01 93 13 28729 -55.3 -87.3 1 32.0 -58.3 250 69 754.3 754.4 326.1 754.5 0.01 94 13 28729 -55.7 -87.7 1 32.0 -58.6 250 69 753.0 753.0 326.0 753.1 0.01 95 12 29240 -54.3 -86.3 1 32.0 -57.8 252 73 775.4 775.4 326.6 775.5 0.02 96 10 30410 -54.3 -86.3 1 32.0 -58.2 255 83 816.9 816.9 327.7 817.1 0.02 97 10 30410 -53.9 -86.9 1 33.0 -57.9 255 83 818.4 818.4 327.7 818.5 0.02 98 10 30410 -53.5 -86.5 1 33.0 -57.7 255 83 819.8 819.9 327.7 820.0 0.02 99 9.2 30945 -54.9 -86.9 1 32.0 -58.8 834.3 834.3 328.1 834.5 0.02 100 8.9 31158 -53.1 -86.1 1 33.0 -57.8 849.2 849.2 328.4 849.4 0.03 101 8.4 31528 -55.9 -86.9 1 31.0 -59.7 852.3 852.4 328.4 852.6 0.02 102 8.2 31682 -53.3 -86.3 1 33.0 -58.1 868.5 868.5 328.8 868.8 0.03 103 7.3 32435 -50.7 -84.7 1 34.0 -57.0 908.5 908.5 329.6 908.9 0.04 TRP 186 12351 -61.3 -75.3 14 14.0 -61.4 295 87 342.7 342.7 295.0 342.8 0.01 WND 151 13649 -59.9 -84.6 3 24.7 -60.2 290 111 366.1 366.1 299.9 366.1 0.00 Sounding variables and indices 1000-500 mb thick: 5516.00 m Freezing level: 972.37 mb = 332.24 m = 1090.00 ft Freezing level: 903.80 mb = 910.88 m = 2988.41 ft Freezing level: 690.86 mb = 3106.64 m = 10192.26 ft Wetbulb zero: Below ground Precipitable water: 0.81 inches Sfc-500 mean rel hum: 71.23 % Est. max temperature: 21.72 C = 71.10 F Sfc-Lift cond lev (LCL): 884.57 mb = 1083.76 m = 3555.59 ft T: 1.08 C 700-500 lapse rate: 6.82 C/km ThetaE index: 1.55 C Layer 893.0- 890.0 mb Conv cond level (CCL): 502.66 mb = 5580.08 m = 18307.12 ft Mean mixing ratio: 2.05 g/kg Conv temperature: 39.14 C = 102.44 F Cap Strength: 25.17 C Lifted Index: 25.13 C Risk: None Lifted Index @300 mb: 31.89 C Lifted Index @700 mb: 21.87 C Showalter Index: 1.57 C Risk: Showers probable Total Totals Index: 49.30 C Risk: Scattered heavy thunderstorms Vertical Totals Index: 25.30 C Cross Totals Index: 24.00 C K Index: 32.20 Risk: 60-80 % chance of thunderstorms Sweat Index: 372.15 Risk: Showers and thunderstorms possible Energy Index: -0.45 Risk: Scattered severe thunderstorms Parcel Indices Parcel: using 100 mb layer CAPE (B+): 18.66 J/kg Max Up Vert Vel: 6.11 m/s Conv Inhibition (B-): 61436.91 J/kg Cap Strength: 25.13 C Lift Cond Lev (LCL): 835.78 mb = 1548.57 m = 5080.55 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 303 at 40 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 1002 98 160 10 -3.4 9.4 | 130 48 -36.7 30.9 1 1000 104 170 9 -1.6 8.9 | 131 46 -34.8 30.3 2 975 305 175 18 -1.6 17.9 | 139 53 -34.8 39.4 3 939 610 195 30 7.8 29.0 | 153 57 -25.5 50.5 4 925 726 205 37 15.6 33.5 | 162 58 -17.6 55.0 5 904 914 215 47 27.0 38.5 | 174 60 -6.3 60.0 6 870 1219 230 55 42.1 35.4 | 189 58 8.9 56.8 7 850 1409 250 55 51.7 18.8 | 205 44 18.4 40.3 8 838 1524 250 55 51.7 18.8 | 205 44 18.4 40.3 9 807 1829 265 57 56.8 5.0 | 222 35 23.5 26.5 10 778 2134 270 55 55.0 -0.0 | 225 31 21.7 21.5 11 749 2438 280 52 51.2 -9.0 | 235 22 17.9 12.5 12 722 2743 275 50 49.8 -4.4 | 224 24 16.5 17.1 13 700 2997 280 46 45.3 -8.0 | 222 18 12.0 13.5 14 695 3048 280 46 45.3 -8.0 | 222 18 12.0 13.5 15 643 3658 285 47 45.4 -12.2 | 232 15 12.1 9.3 16 595 4267 290 61 57.3 -20.9 | 269 24 24.0 0.6 17 550 4877 280 64 63.0 -11.1 | 251 32 29.7 10.4 18 500 5620 290 68 63.9 -23.3 | 273 31 30.6 -1.8 19 469 6096 290 71 66.7 -24.3 | 275 34 33.4 -2.8 20 431 6706 290 84 78.9 -28.7 | 279 46 45.7 -7.2 21 400 7260 285 86 83.1 -22.3 | 271 50 49.8 -0.8 22 380 7620 285 93 89.8 -24.1 | 273 57 56.5 -2.6 23 305 9144 290 97 91.2 -33.2 | 281 59 57.9 -11.7 24 300 9270 285 96 92.7 -24.8 | 273 60 59.4 -3.4 25 266 10058 290 104 97.7 -35.6 | 282 66 64.4 -14.1 26 250 10480 285 99 95.6 -25.6 | 274 62 62.3 -4.1 27 200 11900 290 93 87.4 -31.8 | 281 55 54.1 -10.3 28 186 12351 295 87 78.8 -36.8 | 289 48 45.6 -15.3 29 173 12802 300 89 77.1 -44.5 | 298 49 43.8 -23.0 30 165 13106 290 81 76.1 -27.7 | 278 43 42.8 -6.2 31 157 13411 280 91 89.6 -15.8 | 264 57 56.3 5.7 32 151 13649 290 111 104.3 -38.0 | 283 73 71.0 -16.5 33 150 13690 290 110 103.4 -37.6 | 283 72 70.1 -16.1 34 142 14021 290 111 104.3 -38.0 | 283 73 71.0 -16.5 35 129 14630 300 93 80.5 -46.5 | 298 53 47.3 -25.0 36 123 14935 295 81 73.4 -34.2 | 288 42 40.1 -12.7 37 117 15240 285 89 86.0 -23.0 | 272 53 52.7 -1.5 38 111 15545 285 100 96.6 -25.9 | 274 63 63.3 -4.4 39 100 16190 290 71 66.7 -24.3 | 275 34 33.4 -2.8 40 96 16459 290 71 66.7 -24.3 | 275 34 33.4 -2.8 41 78 17678 280 39 38.4 -6.8 | 199 16 5.1 14.7 42 71 18288 280 46 45.3 -8.0 | 222 18 12.0 13.5 43 70 18360 290 44 41.3 -15.0 | 231 10 8.1 6.4 44 67 18593 295 44 39.9 -18.6 | 246 7 6.6 2.9 45 61 19202 280 41 40.4 -7.1 | 206 16 7.1 14.4 46 58 19507 300 44 38.1 -22.0 | 276 5 4.8 -0.5 47 50 20390 300 39 33.8 -19.5 | 194 2 0.5 2.0 48 50 20422 320 37 23.8 -28.3 | 54 12 -9.5 -6.9 49 47 20726 300 35 30.3 -17.5 | 143 5 -3.0 4.0 50 43 21336 305 32 26.2 -18.4 | 114 8 -7.1 3.1 51 41 21641 285 37 35.7 -9.6 | 192 12 2.5 11.9 52 39 21946 295 37 33.5 -15.6 | 182 6 0.3 5.8 53 37 22250 275 36 35.9 -3.1 | 188 19 2.6 18.3 54 32 23165 295 43 39.0 -18.2 | 240 7 5.7 3.3 55 30 23490 275 39 38.9 -3.4 | 197 19 5.6 18.1 56 27 24079 255 42 40.6 10.9 | 193 33 7.3 32.4 57 26 24384 260 50 49.2 8.7 | 208 34 16.0 30.2 58 25 24689 265 58 57.8 5.1 | 223 36 24.5 26.5 59 22 25298 280 50 49.2 -8.7 | 231 20 16.0 12.8 60 21 25603 255 57 55.1 14.8 | 211 42 21.8 36.2 61 20 25908 255 48 46.4 12.4 | 201 36 13.1 33.9 62 20 26010 265 52 51.8 4.5 | 215 32 18.5 26.0 63 17 27127 270 63 63.0 -0.0 | 234 37 29.7 21.5 64 16 27432 265 56 55.8 4.9 | 220 35 22.5 26.4 65 15 28042 260 63 62.0 10.9 | 222 43 28.8 32.4 66 14 28346 270 60 60.0 -0.0 | 231 34 26.7 21.5 67 13 28651 250 68 63.9 23.3 | 214 54 30.6 44.7 68 10 30410 255 83 80.2 21.5 | 228 64 46.9 43.0 Wind Parameters Mean winds (0-6000m): 272.8 at 52.8 knts Storm direction: 302.8 at 39.6 knts Shear (0-3000m) pos: 8.9 neg: 0.0 tot: 8.9 10-3/s Storm rel Dir Shear (0-3000m): 92.4 deg Storm rel helicity (0-3000m) pos: 1221.3 neg: -27.9 tot: 1193.4 m^2/s^2 ave: 397.8 10^-3 m/s^2 rel: 0.72 Storm rel vorticity (0-3000m) horiz: 20.3 stream: 14.6 10^-3/s Energy-Hel index: 0.14 Bulk Rich Number: 0.04 Bulk Shear: 418.25 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 ------------------------------------------------------------------------------- 500 183 19 142 52| 22.6 0.0 22.6|291.1 0.0 291.1 582.2 0.91| 23.6 21.4 1000 203 31 157 54| 24.8 0.0 24.8|768.1 0.0 768.1 768.1 0.95| 27.9 26.5 1500 221 39 171 51| 19.5 0.0 19.5|1082.1 0.01082.1 721.4 0.90| 28.5 25.6 2000 235 43 182 46| 15.3 0.0 15.3|1190.5 0.01190.5 595.3 0.86| 25.5 22.0 2500 245 45 190 41| 11.6 0.0 11.6|1220.1 -10.81209.3 483.7 0.79| 22.7 18.1 3000 251 45 195 37| 8.9 0.0 8.9|1221.3 -27.91193.4 397.8 0.72| 20.3 14.6 4000 261 46 204 31| 8.2 0.0 8.2|1275.5 -27.91247.6 311.9 0.73| 17.0 12.5 5000 268 50 215 28| 6.6 1.0 7.6|1316.5 -84.41232.1 246.4 0.63| 15.5 9.8 6000 273 53 226 27| 6.1 0.9 7.0|1393.8 -84.41309.3 218.2 0.64| 13.9 8.9 Wrote GIF file: /home/apache/climate/data/raob//KIAD/skewt/KIAD.skewt.20251227.00.gif