UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025121912.upa.cvt Date: 1200Z 19 DEC 25 Searching for KIAD... Searching the city database file for: KIAD ... Date:1200Z 19 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 ------------------------------------------------------------------------------- 0 1000 -30 SFC 986 98 15.0 14.0 94 1.0 14.4 155 12 289.3 291.1 288.1 318.1 10.24 2 925 628 12.4 12.3 99 0.1 12.3 190 41 292.0 293.7 288.6 319.7 9.76 3 882 1027 10.6 10.6 100 0.0 10.6 206 52 294.1 295.8 288.8 320.3 9.13 4 863 1209 10.4 9.7 95 0.7 10.0 214 56 295.8 297.3 289.1 321.2 8.79 5 850 1336 9.6 8.9 95 0.7 9.2 215 56 296.2 297.7 288.9 320.7 8.45 6 819 1644 7.6 7.5 99 0.1 7.5 221 58 297.2 298.7 288.9 320.5 7.96 7 763 2226 4.8 4.6 99 0.2 4.7 224 60 300.3 301.6 289.0 321.0 6.98 8 756 2301 5.0 3.1 87 1.9 4.0 222 60 301.3 302.5 288.8 320.2 6.34 9 740 2476 4.0 0.7 79 3.3 2.3 219 60 302.1 303.1 288.2 318.5 5.44 10 701 2915 0.4 -0.3 95 0.7 0.0 210 62 302.8 303.8 288.4 318.9 5.34 11 700 2926 0.4 -0.3 95 0.7 0.0 210 62 302.9 303.9 288.5 319.1 5.35 12 666 3324 -1.9 -3.3 90 1.4 -2.6 210 60 304.7 305.5 288.2 318.5 4.50 13 660 3397 -2.3 -4.6 84 2.3 -3.3 210 59 305.0 305.8 288.0 317.7 4.12 14 654 3469 -2.5 -4.5 86 2.0 -3.4 210 59 305.6 306.4 288.2 318.5 4.19 15 644 3592 -2.7 -6.2 77 3.5 -4.2 210 58 306.7 307.4 288.2 318.3 3.73 16 642 3616 -2.7 -6.8 73 4.1 -4.5 210 58 307.0 307.7 288.1 318.2 3.58 17 632 3741 -3.3 -6.6 78 3.3 -4.7 211 58 307.7 308.4 288.5 319.2 3.69 18 609 4034 -5.5 -7.7 84 2.2 -6.4 213 59 308.4 309.1 288.6 319.5 3.52 19 593 4242 -7.5 -7.8 98 0.3 -7.6 215 60 308.5 309.1 288.6 319.7 3.58 20 583 4375 -7.1 -10.0 80 2.9 -8.2 215 63 310.4 311.0 288.8 320.2 3.07 21 577 4456 -7.5 -10.7 78 3.2 -8.7 215 65 310.9 311.4 288.8 320.3 2.93 22 574 4496 -7.7 -11.0 77 3.3 -8.9 215 66 311.1 311.7 288.8 320.3 2.88 23 573 4510 -7.9 -11.3 77 3.4 -9.2 215 67 311.0 311.6 288.8 320.1 2.81 24 566 4606 -7.3 -16.3 49 9.0 -10.3 215 70 312.8 313.2 288.4 319.0 1.89 25 563 4647 -7.5 -16.5 48 9.0 -10.5 215 71 313.1 313.4 288.5 319.2 1.87 26 540 4971 -10.3 -18.3 52 8.0 -12.8 215 78 313.5 313.8 288.4 319.0 1.67 27 516 5320 -12.7 -23.7 39 11.0 -15.6 215 76 314.7 314.9 288.2 318.4 1.09 28 500 5560 -14.7 -22.7 51 8.0 -16.8 215 75 315.1 315.4 288.5 319.3 1.23 29 469 6038 -19.1 -24.0 65 4.9 -20.3 219 73 315.5 315.7 288.6 319.4 1.17 30 466 6086 -19.3 -24.3 65 5.0 -20.5 220 73 315.8 316.0 288.6 319.7 1.15 31 463 6134 -19.3 -27.3 49 8.0 -21.0 220 73 316.4 316.6 288.5 319.4 0.88 32 461 6166 -19.5 -29.5 41 10.0 -21.5 219 74 316.5 316.7 288.4 319.0 0.72 33 459 6198 -19.7 -28.7 45 9.0 -21.5 219 74 316.7 316.8 288.5 319.4 0.78 34 452 6312 -20.5 -34.5 27 14.0 -22.8 217 75 317.1 317.2 288.3 318.7 0.45 35 450 6344 -20.9 -34.9 27 14.0 -23.2 217 76 317.0 317.1 288.3 318.5 0.44 36 449 6361 -20.7 -41.7 13 21.0 -23.5 217 76 317.4 317.5 288.2 318.2 0.22 37 436 6576 -22.3 -44.3 12 22.0 -24.9 214 79 318.1 318.1 288.3 318.7 0.17 38 400 7200 -28.1 -44.1 20 16.0 -29.7 205 86 318.5 318.5 288.5 319.2 0.19 39 346 8223 -37.3 -47.3 35 10.0 -38.0 205 92 319.5 319.5 288.8 320.1 0.15 40 338 8384 -38.1 -51.1 24 13.0 -38.8 205 94 320.5 320.6 289.0 320.9 0.10 41 327 8612 -39.9 -52.9 24 13.0 -40.6 205 96 321.1 321.1 289.2 321.4 0.09 42 326 8632 -40.1 -53.1 24 13.0 -40.8 205 97 321.1 321.1 289.2 321.4 0.08 43 323 8696 -40.3 -54.3 21 14.0 -41.0 205 97 321.7 321.7 289.3 322.0 0.07 44 319 8781 -40.9 -50.9 33 10.0 -41.4 205 99 322.0 322.0 289.5 322.4 0.11 45 318 8802 -41.1 -44.6 69 3.5 -41.3 205 99 322.0 322.1 289.6 322.9 0.23 46 317 8823 -41.3 -42.1 92 0.8 -41.3 205 99 322.0 322.1 289.7 323.1 0.30 47 316 8845 -41.1 -43.0 82 1.9 -41.2 205 99 322.6 322.7 289.9 323.6 0.27 48 313 8910 -41.1 -43.3 79 2.2 -41.3 205 100 323.5 323.5 290.1 324.5 0.27 49 312 8932 -40.9 -43.8 73 2.9 -41.1 205 100 324.1 324.1 290.3 325.0 0.25 50 311 8953 -39.9 -56.9 15 17.0 -40.7 205 101 325.8 325.8 290.6 326.0 0.06 51 310 8976 -39.7 -52.7 24 13.0 -40.4 205 101 326.3 326.4 290.7 326.7 0.09 52 309 8998 -39.1 -54.1 19 15.0 -39.9 205 101 327.5 327.5 291.1 327.8 0.08 53 306 9065 -39.3 -52.3 24 13.0 -40.1 205 102 328.1 328.1 291.3 328.5 0.10 54 302 9155 -40.3 -53.3 24 13.0 -41.0 206 102 327.9 328.0 291.2 328.3 0.09 55 300 9200 -40.5 -55.5 18 15.0 -41.2 210 100 328.3 328.3 291.3 328.6 0.07 56 296 9292 -40.7 -61.7 9 21.0 -41.5 211 102 329.3 329.3 291.5 329.4 0.03 57 264 10066 -45.0 -66.0 8 21.0 -45.6 215 119 333.9 333.9 292.8 334.0 0.02 58 250 10430 -47.1 -68.1 7 21.0 -47.6 215 117 336.0 336.0 293.3 336.1 0.02 59 203 11775 -55.3 -73.3 9 18.0 -55.5 220 109 343.7 343.7 295.2 343.8 0.01 60 200 11870 -54.3 -75.3 6 21.0 -54.6 220 109 346.8 346.8 295.9 346.8 0.01 61 150 13720 -55.9 -83.9 2 28.0 -56.2 225 108 373.8 373.8 301.2 373.8 0.00 62 100 16250 -63.7 -87.7 2 24.0 -63.9 240 84 404.7 404.7 305.8 404.7 0.00 63 97 16437 -62.5 -87.5 2 25.0 -62.7 240 84 410.5 410.5 306.6 410.5 0.00 64 86 17176 -65.3 -87.3 3 22.0 -65.5 240 58 419.3 419.3 307.6 419.3 0.00 65 83 17393 -63.5 -87.5 2 24.0 -63.7 229 45 427.2 427.2 308.5 427.2 0.00 66 79 17695 -65.3 -87.3 3 22.0 -65.5 216 48 429.6 429.6 308.8 429.6 0.00 67 71 18352 -60.9 -86.9 2 26.0 -61.3 244 54 452.3 452.3 311.1 452.3 0.00 68 70 18440 -61.9 -87.9 2 26.0 -62.2 250 40 452.0 452.0 311.0 452.0 0.00 69 65 18900 -62.1 -87.1 2 25.0 -62.4 245 43 461.2 461.2 311.9 461.2 0.00 70 61 19291 -64.9 -88.9 2 24.0 -65.1 254 45 463.4 463.4 312.1 463.4 0.00 71 56 19818 -60.9 -87.9 2 27.0 -61.4 265 47 484.0 484.0 313.8 484.0 0.00 72 51 20398 -63.3 -88.3 2 25.0 -63.7 252 35 491.5 491.5 314.3 491.5 0.00 73 50 20520 -62.3 -88.3 2 26.0 -62.7 235 37 496.7 496.7 314.7 496.7 0.00 74 49 20645 -61.1 -88.1 2 27.0 -61.6 236 37 502.4 502.4 315.1 502.4 0.00 75 43 21453 -62.9 -88.9 2 26.0 -63.4 252 25 517.1 517.1 316.1 517.1 0.00 76 42 21599 -61.5 -88.5 2 27.0 -62.1 243 25 524.0 524.0 316.5 524.1 0.00 77 40 21901 -62.5 -88.5 2 26.0 -63.0 244 16 528.9 528.9 316.9 528.9 0.00 78 39 22058 -61.1 -88.1 2 27.0 -61.7 243 16 536.3 536.3 317.3 536.3 0.00 79 38 22219 -62.3 -88.3 2 26.0 -62.9 240 18 537.2 537.2 317.3 537.2 0.00 80 36 22555 -59.1 -87.1 1 28.0 -60.0 235 21 553.9 553.9 318.3 553.9 0.01 81 31 23486 -62.1 -89.1 2 27.0 -62.8 242 22 570.0 570.0 319.2 570.0 0.00 82 30 23690 -60.5 -88.5 1 28.0 -61.4 230 24 579.7 579.7 319.6 579.7 0.01 83 25 24833 -57.3 -87.3 1 30.0 -58.7 280 21 619.9 619.9 321.5 620.0 0.01 84 20 26230 -61.1 -88.1 2 27.0 -62.3 280 17 649.1 649.2 322.6 649.2 0.01 85 19 26548 -61.3 -88.3 2 27.0 -62.5 292 17 658.1 658.1 323.0 658.2 0.01 86 16 27620 -58.9 -87.9 1 29.0 -60.7 283 16 699.1 699.1 324.4 699.2 0.01 87 14 28454 -60.9 -87.9 2 27.0 -62.5 258 20 719.5 719.5 325.0 719.6 0.01 88 13 28915 -60.7 -88.7 1 28.0 -62.4 268 18 735.6 735.7 325.6 735.7 0.01 89 12 29419 -55.3 -86.3 1 31.0 -58.5 266 20 771.8 771.8 326.5 772.0 0.02 90 10 30580 -56.3 -86.3 1 30.0 -59.6 260 32 809.4 809.4 327.5 809.6 0.02 91 9.0 31248 -56.9 -86.9 1 30.0 -60.3 831.8 831.9 328.0 832.0 0.02 92 8.2 31845 -51.9 -84.9 1 33.0 -57.3 874.0 874.1 328.9 874.4 0.04 93 7.4 32512 -50.9 -83.9 1 33.0 -57.1 904.2 904.2 329.5 904.6 0.05 94 7.2 32691 -49.3 -83.3 1 34.0 -56.2 917.8 917.9 329.8 918.4 0.05 TRP 203 11775 -55.3 -73.3 9 18.0 -55.5 220 109 343.7 343.7 295.2 343.8 0.01 WND 264 10066 -45.0 -66.0 8 21.0 -45.6 215 119 333.9 333.9 292.8 334.0 0.02 Sounding variables and indices 1000-500 mb thick: 5590.00 m Freezing level: 694.09 mb = 2995.30 m = 9826.97 ft Wetbulb zero: 699.36 mb = 2933.32 m = 9623.63 ft Precipitable water: 1.20 inches Sfc-500 mean rel hum: 82.99 % Est. max temperature: 22.33 C = 72.19 F Sfc-Lift cond lev (LCL): 971.58 mb = 220.30 m = 722.78 ft T: 14.40 C 700-500 lapse rate: 5.73 C/km ThetaE index: 2.55 C Layer 756.0- 701.0 mb Conv cond level (CCL): 922.98 mb = 646.30 m = 2120.39 ft Mean mixing ratio: 9.79 g/kg Conv temperature: 17.76 C = 63.97 F Cap Strength: 2.97 C Lifted Index: 2.04 C Risk: None Lifted Index @300 mb: 6.82 C Lifted Index @700 mb: 0.26 C Showalter Index: 1.28 C Risk: Showers probable Total Totals Index: 47.90 C Risk: Scattered moderate thunderstorms Vertical Totals Index: 24.30 C Cross Totals Index: 23.60 C K Index: 32.50 Risk: 60-80 % chance of thunderstorms Sweat Index: 293.80 Risk: None Energy Index: -0.30 Risk: Scattered severe thunderstorms Parcel Indices Parcel: using 100 mb layer CAPE (B+): 17.21 J/kg Max Up Vert Vel: 5.87 m/s Conv Inhibition (B-): 56974.68 J/kg Cap Strength: 2.85 C Lift Cond Lev (LCL): 930.05 mb = 582.82 m = 1912.10 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 243 at 45 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 ---------------------------------------------------------- 0 986 98 155 12 -5.1 10.9 | 78 46 -45.5 -9.3 1 962 305 175 27 -2.4 26.9 | 99 43 -42.8 6.7 2 927 610 190 40 6.9 39.4 | 120 39 -33.5 19.2 3 925 628 190 41 7.1 40.4 | 121 39 -33.3 20.2 4 894 914 200 49 16.8 46.0 | 138 35 -23.7 25.9 5 862 1219 215 56 32.1 45.9 | 162 27 -8.3 25.7 6 850 1336 215 56 32.1 45.9 | 162 27 -8.3 25.7 7 800 1829 225 60 42.4 42.4 | 185 22 2.0 22.2 8 771 2134 225 60 42.4 42.4 | 185 22 2.0 22.2 9 743 2438 220 60 38.6 46.0 | 176 26 -1.9 25.8 10 716 2743 215 63 36.1 51.6 | 172 32 -4.3 31.4 11 700 2926 210 62 31.0 53.7 | 164 35 -9.5 33.5 12 638 3658 210 58 29.0 50.2 | 159 32 -11.5 30.0 13 590 4267 215 60 34.4 49.1 | 168 30 -6.0 29.0 14 546 4877 215 78 44.7 63.9 | 186 44 4.3 43.7 15 500 5560 215 75 43.0 61.4 | 184 41 2.6 41.3 16 465 6096 220 73 46.9 55.9 | 190 36 6.5 35.7 17 400 7200 205 86 36.3 77.9 | 176 58 -4.1 57.8 18 377 7620 205 87 36.8 78.8 | 176 59 -3.7 58.7 19 345 8230 205 92 38.9 83.4 | 179 63 -1.6 63.2 20 302 9144 205 103 43.5 93.3 | 182 73 3.1 73.2 21 300 9200 210 100 50.0 86.6 | 188 67 9.5 66.4 22 264 10066 215 119 68.3 97.5 | 200 82 27.8 77.3 23 253 10363 215 119 68.3 97.5 | 200 82 27.8 77.3 24 250 10430 215 117 67.1 95.8 | 199 80 26.7 75.7 25 203 11775 220 109 70.1 83.5 | 205 70 29.6 63.3 26 200 11870 220 109 70.1 83.5 | 205 70 29.6 63.3 27 150 13720 225 108 76.4 76.4 | 213 67 35.9 56.2 28 130 14630 225 108 76.4 76.4 | 213 67 35.9 56.2 29 118 15240 225 95 67.2 67.2 | 210 54 26.7 47.0 30 107 15850 235 78 63.9 44.7 | 224 34 23.4 24.6 31 100 16250 240 84 72.7 42.0 | 236 39 32.3 21.8 32 97 16459 240 84 72.7 42.0 | 236 39 32.3 21.8 33 88 17069 245 65 58.9 27.5 | 248 20 18.5 7.3 34 83 17374 230 45 34.5 28.9 | 146 11 -6.0 8.7 35 79 17678 215 48 27.5 39.3 | 146 23 -12.9 19.1 36 72 18288 240 64 55.4 32.0 | 232 19 15.0 11.8 37 70 18440 250 40 37.6 13.7 | 24 7 -2.9 -6.5 38 68 18593 255 47 45.4 12.2 | 328 9 4.9 -8.0 39 65 18898 245 43 39.0 18.2 | 37 2 -1.5 -2.0 40 56 19812 265 47 46.8 4.1 | 338 17 6.4 -16.1 41 53 20117 270 33 33.0 -0.0 | 20 22 -7.5 -20.2 42 51 20422 250 35 32.9 12.0 | 43 11 -7.6 -8.2 43 50 20520 235 37 30.3 21.2 | 96 10 -10.1 1.0 44 46 21031 240 38 32.9 19.0 | 81 8 -7.5 -1.2 45 44 21336 260 25 24.6 4.3 | 45 22 -15.8 -15.8 46 42 21641 240 25 21.7 12.5 | 68 20 -18.8 -7.7 47 40 21946 245 15 13.6 6.3 | 63 30 -26.9 -13.8 48 36 22555 235 21 17.2 12.0 | 71 25 -23.3 -8.1 49 34 22860 250 16 15.0 5.5 | 60 29 -25.4 -14.7 50 33 23165 260 19 18.7 3.3 | 52 28 -21.7 -16.9 51 30 23690 230 24 18.4 15.4 | 78 23 -22.1 -4.8 52 28 24079 230 24 18.4 15.4 | 78 23 -22.1 -4.8 53 27 24384 260 27 26.6 4.7 | 42 21 -13.9 -15.5 54 26 24689 280 27 26.6 -4.7 | 29 28 -13.9 -24.9 55 24 24994 280 15 14.8 -2.6 | 48 34 -25.7 -22.8 56 23 25298 235 12 9.8 6.9 | 67 33 -30.6 -13.3 57 21 25908 260 19 18.7 3.3 | 52 28 -21.7 -16.9 58 20 26230 280 17 16.7 -3.0 | 46 33 -23.7 -23.1 59 19 26518 295 17 15.4 -7.2 | 42 37 -25.0 -27.4 60 18 26822 270 19 19.0 -0.0 | 47 29 -21.5 -20.2 61 17 27127 270 17 17.0 -0.0 | 49 31 -23.5 -20.2 62 17 27432 285 16 15.5 -4.1 | 46 35 -25.0 -24.3 63 15 28042 280 15 14.8 -2.6 | 48 34 -25.7 -22.8 64 14 28346 250 23 21.6 7.9 | 57 23 -18.8 -12.3 65 14 28651 270 16 16.0 -0.0 | 50 32 -24.5 -20.2 66 12 29566 265 21 20.9 1.8 | 47 27 -19.5 -18.3 67 11 29870 280 22 21.7 -3.8 | 38 30 -18.8 -24.0 68 11 30175 235 15 12.3 8.6 | 68 30 -28.2 -11.6 69 10 30580 260 32 31.5 5.6 | 31 17 -8.9 -14.6 Wind Parameters Mean winds (0-6000m): 213.5 at 60.3 knts Storm direction: 243.5 at 45.2 knts Shear (0-3000m) pos: 9.8 neg: 2.7 tot: 12.5 10-3/s Storm rel Dir Shear (0-3000m): 84.7 deg Storm rel helicity (0-3000m) pos: 636.8 neg: -85.0 tot: 551.8 m^2/s^2 ave: 183.9 10^-3 m/s^2 rel: 0.62 Storm rel vorticity (0-3000m) horiz: 15.1 stream: 9.4 10^-3/s Energy-Hel index: 0.07 Bulk Rich Number: 0.08 Bulk Shear: 217.58 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 ------------------------------------------------------------------------------- 500 179 28 100 41| 31.2 0.0 31.2|348.3 0.0 348.3 696.7 0.97| 32.5 31.4 1000 192 37 116 37| 24.3 0.0 24.3|531.9 0.0 531.9 531.9 0.94| 27.4 25.8 1500 202 44 130 31| 18.6 0.0 18.6|607.3 0.0 607.3 404.9 0.93| 22.4 20.8 2000 209 48 141 27| 14.7 0.0 14.7|636.8 0.0 636.8 318.4 0.93| 18.1 16.8 2500 212 50 148 26| 11.7 1.7 13.4|636.8 -31.4 605.4 242.2 0.77| 16.2 12.5 3000 212 52 152 27| 9.8 2.7 12.5|636.8 -85.0 551.8 183.9 0.62| 15.1 9.4 4000 212 54 155 28| 7.7 2.0 9.7|663.6-103.0 560.6 140.1 0.59| 12.2 7.2 5000 213 57 161 30| 7.2 1.7 8.9|776.9-108.0 668.9 133.8 0.59| 11.8 6.9 6000 213 60 167 31| 5.9 1.4 7.3|821.8-118.1 703.7 117.3 0.57| 10.6 6.1 Wrote GIF file: /home/apache/climate/data/raob//KIAD/skewt/KIAD.skewt.20251219.12.gif