UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025120612.upa.cvt Date: 1200Z 6 DEC 25 Searching for KIAD... Searching the city database file for: KIAD ... Date:1200Z 6 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 1004 98 -0.9 -2.3 90 1.4 -1.4 250 2 271.9 272.5 271.5 280.6 3.21 1 1000 117 -1.1 -2.5 90 1.4 -1.6 215 3 272.0 272.6 271.5 280.6 3.18 2 984 246 -1.9 -2.5 96 0.6 -2.1 222 3 272.5 273.0 271.9 281.3 3.23 3 976 311 -1.7 -2.2 96 0.5 -1.9 225 3 273.3 273.9 272.5 282.4 3.33 4 953 501 0.2 -1.8 86 2.0 -0.6 215 4 277.1 277.7 275.0 286.8 3.51 5 938 628 -0.5 -3.0 83 2.5 -1.5 218 4 277.7 278.2 274.9 286.7 3.26 6 925 740 -1.3 -3.2 87 1.9 -2.0 265 4 278.0 278.5 275.1 287.0 3.26 7 894 1010 -3.9 -3.9 100 0.0 -3.9 260 7 278.0 278.6 275.0 286.9 3.20 8 873 1198 -5.3 -5.4 99 0.1 -5.3 260 11 278.5 279.0 274.9 286.6 2.92 9 871 1216 -3.5 -8.5 68 5.0 -5.2 260 11 280.5 280.9 275.2 287.1 2.31 10 866 1261 -1.5 -11.5 46 10.0 -4.7 263 12 283.1 283.4 275.8 288.4 1.83 11 862 1298 -1.3 -11.3 46 10.0 -4.6 266 14 283.6 284.0 276.2 289.1 1.87 12 857 1345 -1.5 -12.5 43 11.0 -5.0 270 15 283.9 284.2 276.1 288.9 1.70 13 852 1391 -1.3 -14.3 36 13.0 -5.3 274 16 284.6 284.8 276.1 289.0 1.48 14 850 1410 -1.1 -16.1 31 15.0 -5.5 275 17 285.0 285.2 276.0 288.8 1.28 15 846 1448 0.0 -25.0 13 25.0 -6.0 277 18 286.5 286.6 275.8 288.4 0.59 16 843 1476 0.0 -25.0 13 25.0 -6.0 278 19 286.8 286.9 276.0 288.7 0.60 17 805 1844 -1.7 -19.7 24 18.0 -6.6 265 22 288.8 289.0 277.6 291.9 0.99 18 800 1894 -2.1 -15.1 36 13.0 -6.1 262 22 288.9 289.2 278.3 293.4 1.48 19 784 2054 -3.5 -12.5 50 9.0 -6.4 254 23 289.1 289.4 278.9 294.7 1.86 20 772 2175 -4.5 -14.5 46 10.0 -7.5 249 24 289.3 289.6 278.7 294.1 1.61 21 749 2413 -6.7 -11.3 70 4.6 -8.2 246 24 289.4 289.8 279.4 295.8 2.15 22 744 2465 -6.9 -10.7 74 3.8 -8.2 246 24 289.7 290.1 279.8 296.5 2.27 23 736 2549 -7.3 -11.9 70 4.6 -8.8 252 26 290.2 290.6 279.7 296.4 2.08 24 726 2656 -8.1 -11.4 77 3.3 -9.2 259 28 290.5 290.9 280.0 297.0 2.20 25 722 2698 -8.1 -12.0 73 3.9 -9.4 262 28 290.9 291.3 280.1 297.2 2.11 26 706 2873 -7.9 -16.9 48 9.0 -10.5 262 33 293.0 293.3 280.2 297.4 1.44 27 704 2895 -7.7 -19.7 38 12.0 -10.9 261 34 293.5 293.7 280.0 297.0 1.14 28 700 2939 -7.7 -22.7 29 15.0 -11.3 260 35 294.0 294.1 279.9 296.7 0.88 29 698 2961 -7.7 -24.7 24 17.0 -11.6 260 35 294.2 294.3 279.8 296.6 0.74 30 696 2984 -7.9 -16.9 48 9.0 -10.5 261 35 294.2 294.5 280.8 298.7 1.46 31 694 3006 -7.9 -17.9 44 10.0 -10.7 261 35 294.5 294.7 280.7 298.6 1.35 32 692 3028 -8.1 -16.1 53 8.0 -10.4 261 35 294.5 294.8 281.0 299.3 1.57 33 670 3279 -9.1 -21.1 37 12.0 -12.1 264 36 296.1 296.3 281.1 299.4 1.06 34 655 3455 -8.5 -29.5 17 21.0 -12.8 265 41 298.7 298.8 281.5 300.4 0.51 35 644 3586 -8.5 -36.5 8 28.0 -13.4 265 47 300.1 300.2 281.8 301.0 0.26 36 639 3647 -8.9 -29.9 16 21.0 -13.2 265 50 300.4 300.5 282.2 302.0 0.50 37 637 3671 -8.7 -38.7 7 30.0 -13.6 265 51 300.9 300.9 282.0 301.6 0.21 38 633 3720 -8.7 -41.7 5 33.0 -13.8 265 52 301.4 301.4 282.1 301.9 0.16 39 624 3831 -8.7 -37.7 8 29.0 -13.7 264 54 302.6 302.7 282.8 303.5 0.24 40 593 4224 -11.1 -40.1 7 29.0 -15.6 260 63 304.3 304.3 283.4 305.0 0.20 41 559 4675 -14.9 -39.9 10 25.0 -18.5 260 63 305.0 305.0 283.7 305.7 0.21 42 552 4770 -15.7 -31.7 24 16.0 -18.6 260 63 305.1 305.2 284.1 306.8 0.49 43 543 4894 -16.5 -35.5 18 19.0 -19.5 260 63 305.6 305.7 284.1 306.8 0.34 44 529 5090 -18.1 -34.1 23 16.0 -20.7 257 67 306.0 306.1 284.3 307.4 0.40 45 526 5132 -18.5 -31.5 31 13.0 -20.7 256 67 306.0 306.1 284.5 307.8 0.52 46 521 5204 -18.7 -27.7 45 9.0 -20.5 255 69 306.6 306.8 285.0 309.1 0.75 47 500 5510 -19.9 -31.9 34 12.0 -22.0 250 74 308.8 308.9 285.5 310.6 0.53 48 493 5614 -20.3 -33.3 30 13.0 -22.4 252 75 309.5 309.6 285.7 311.2 0.47 49 477 5858 -21.9 -33.9 33 12.0 -23.8 256 76 310.5 310.6 286.1 312.1 0.46 50 450 6284 -24.7 -40.7 21 16.0 -26.6 259 79 312.2 312.2 286.4 313.1 0.24 51 428 6646 -27.3 -45.3 16 18.0 -29.0 256 84 313.4 313.4 286.7 314.0 0.16 52 410 6954 -29.1 -45.1 20 16.0 -30.6 258 92 314.9 315.0 287.3 315.6 0.17 53 404 7059 -30.1 -41.1 33 11.0 -31.2 259 95 315.0 315.0 287.4 315.9 0.26 54 400 7130 -30.5 -37.5 50 7.0 -31.3 260 97 315.3 315.4 287.6 316.7 0.38 55 399 7148 -30.7 -36.7 56 6.0 -31.4 260 97 315.3 315.4 287.7 316.8 0.41 56 300 9120 -41.9 -51.9 33 10.0 -42.4 255 143 326.3 326.3 290.7 326.7 0.11 57 252 10278 -50.3 -61.3 26 11.0 -50.6 260 162 330.5 330.5 291.9 330.7 0.04 58 250 10330 -50.7 -61.7 26 11.0 -51.0 260 161 330.7 330.7 291.9 330.8 0.04 59 238 10649 -52.7 -64.7 22 12.0 -52.9 260 149 332.4 332.4 292.4 332.5 0.03 60 200 11770 -53.1 -78.1 3 25.0 -53.4 260 132 348.7 348.7 296.3 348.7 0.00 61 150 13620 -54.7 -84.7 1 30.0 -55.1 265 105 375.8 375.8 301.6 375.8 0.00 62 100 16170 -64.3 -87.3 3 23.0 -64.5 270 84 403.5 403.5 305.7 403.5 0.00 63 91 16747 -63.3 -87.3 2 24.0 -63.5 270 73 416.5 416.5 307.3 416.5 0.00 64 80 17530 -67.5 -87.5 4 20.0 -67.7 273 64 423.5 423.5 308.1 423.5 0.00 65 76 17840 -65.7 -87.7 3 22.0 -65.9 274 67 433.5 433.5 309.2 433.5 0.00 66 74 18001 -66.3 -88.3 3 22.0 -66.5 275 69 435.6 435.6 309.4 435.6 0.00 67 70 18340 -63.1 -88.1 2 25.0 -63.4 285 48 449.4 449.4 310.8 449.4 0.00 68 62 19082 -65.1 -89.1 2 24.0 -65.4 272 45 460.8 460.8 311.8 460.8 0.00 69 59 19385 -63.7 -88.7 2 25.0 -64.0 285 44 470.6 470.6 312.7 470.6 0.00 70 53 20037 -66.5 -89.5 3 23.0 -66.7 267 34 478.7 478.7 313.4 478.7 0.00 71 50 20390 -65.9 -89.9 2 24.0 -66.2 270 33 488.2 488.2 314.1 488.2 0.00 72 43 21310 -63.3 -89.3 2 26.0 -63.7 289 34 516.1 516.1 316.1 516.1 0.00 73 41 21602 -64.9 -89.9 2 25.0 -65.3 272 29 519.2 519.2 316.2 519.2 0.00 74 37 22233 -60.9 -88.9 1 28.0 -61.6 283 26 544.9 544.9 317.8 545.0 0.00 75 33 22946 -59.9 -87.9 1 28.0 -60.7 277 19 565.7 565.7 318.9 565.7 0.01 76 31 23336 -59.7 -88.7 1 29.0 -60.6 264 15 576.5 576.5 319.5 576.5 0.00 77 30 23540 -61.3 -88.3 2 27.0 -62.1 285 20 577.5 577.5 319.5 577.6 0.01 78 29 23751 -61.3 -88.3 2 27.0 -62.1 287 20 583.2 583.2 319.8 583.2 0.01 79 28 23969 -59.9 -87.9 1 28.0 -60.9 289 21 592.9 592.9 320.3 593.0 0.01 80 26 24431 -60.9 -88.9 1 28.0 -61.9 263 10 602.8 602.8 320.7 602.8 0.01 81 25 24677 -58.5 -88.5 1 30.0 -59.8 255 16 616.5 616.5 321.3 616.5 0.01 82 24 24934 -56.7 -86.7 1 30.0 -58.3 305 20 629.0 629.0 321.9 629.0 0.01 83 23 25204 -57.5 -87.5 1 30.0 -59.0 319 15 634.3 634.3 322.1 634.4 0.01 84 20 26090 -56.1 -86.1 1 30.0 -58.1 345 17 664.5 664.5 323.2 664.5 0.01 85 15 27930 -54.1 -85.1 1 31.0 -57.1 345 10 728.1 728.1 325.3 728.2 0.02 86 14 28373 -54.5 -85.5 1 31.0 -57.5 329 6 741.2 741.2 325.7 741.4 0.02 87 12 29377 -47.7 -82.7 1 35.0 -53.5 41 14 798.7 798.8 327.2 799.1 0.04 88 12 29377 -48.5 -82.5 1 34.0 -54.0 41 14 795.9 795.9 327.1 796.2 0.04 89 11 29953 -46.3 -82.3 1 36.0 -53.0 67 15 823.9 824.0 327.8 824.3 0.04 90 10 30590 -43.7 -81.7 1 38.0 -52.0 100 14 856.4 856.4 328.5 856.9 0.05 91 9.8 30726 -42.1 -80.1 1 38.0 -51.3 101 14 867.4 867.4 328.8 868.1 0.07 92 8.9 31371 -46.3 -82.3 1 36.0 -53.8 103 15 875.4 875.4 329.0 875.9 0.05 93 8.4 31757 -44.3 -81.3 1 37.0 -53.1 105 15 897.9 897.9 329.4 898.5 0.06 94 7.0 32980 -43.5 -81.5 1 38.0 -53.5 110 17 949.2 949.3 330.4 950.0 0.07 95 6.2 33797 -43.1 -81.1 1 38.0 -53.9 984.5 984.5 330.9 985.5 0.09 TRP 238 10649 -52.7 -64.7 22 12.0 -52.9 260 149 332.4 332.4 292.4 332.5 0.03 WND 252 10278 -50.3 -61.3 26 11.0 -50.6 260 162 330.5 330.5 291.9 330.7 0.04 Sounding variables and indices 1000-500 mb thick: 5393.00 m Freezing level: Surface below freezing Freezing level: 955.42 mb = 481.27 m = 1578.95 ft Freezing level: 948.71 mb = 537.67 m = 1763.97 ft Freezing level: 846.00 mb = 1447.68 m = 4749.56 ft Freezing level: 843.00 mb = 1476.12 m = 4842.86 ft Wetbulb zero: Below ground Precipitable water: 0.34 inches Sfc-500 mean rel hum: 43.30 % Est. max temperature: 11.49 C = 52.69 F Sfc-Lift cond lev (LCL): 982.11 mb = 260.91 m = 855.98 ft T: -1.85 C 700-500 lapse rate: 4.75 C/km ThetaE index: 0.59 C Layer 850.0- 843.0 mb Conv cond level (CCL): 899.69 mb = 960.09 m = 3149.87 ft Mean mixing ratio: 3.30 g/kg Conv temperature: 5.18 C = 41.32 F Cap Strength: 18.84 C Lifted Index: 20.28 C Risk: None Lifted Index @300 mb: 29.45 C Lifted Index @700 mb: 11.44 C Showalter Index: 17.23 C Risk: None Total Totals Index: 22.60 C Risk: None Vertical Totals Index: 18.80 C Cross Totals Index: 3.80 C K Index: -12.30 Risk: None Sweat Index: 108.00 Risk: None Energy Index: 4.60 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 28.86 J/kg Max Up Vert Vel: 7.60 m/s Conv Inhibition (B-): 70148.97 J/kg Cap Strength: 20.16 C Lift Cond Lev (LCL): 931.09 mb = 687.61 m = 2255.90 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 289 at 30 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 1004 98 250 2 1.9 0.7 | 111 28 -26.3 10.1 1 1000 117 215 3 1.7 2.5 | 114 29 -26.5 11.9 2 977 305 225 3 2.1 2.1 | 114 29 -26.1 11.6 3 940 610 210 4 2.0 3.5 | 116 29 -26.2 12.9 4 925 740 265 4 4.0 0.3 | 112 26 -24.2 9.8 5 905 914 260 5 4.9 0.9 | 114 25 -23.3 10.3 6 871 1219 260 11 10.8 1.9 | 123 21 -17.4 11.4 7 850 1410 275 17 16.9 -1.5 | 125 14 -11.3 8.0 8 838 1524 280 20 19.7 -3.5 | 125 10 -8.5 6.0 9 806 1829 265 22 21.9 1.9 | 151 13 -6.3 11.4 10 775 2134 250 24 22.6 8.2 | 162 19 -5.7 17.7 11 746 2438 245 24 21.8 10.1 | 162 21 -6.5 19.6 12 718 2743 265 29 28.9 2.5 | 183 12 0.7 12.0 13 700 2939 260 35 34.5 6.1 | 202 17 6.3 15.5 14 663 3353 265 36 35.9 3.1 | 211 15 7.7 12.6 15 637 3658 265 51 50.8 4.4 | 238 27 22.6 13.9 16 588 4267 260 64 63.0 11.1 | 239 40 34.8 20.6 17 543 4877 260 63 62.0 10.9 | 239 39 33.8 20.4 18 502 5486 250 74 69.5 25.3 | 230 54 41.3 34.8 19 500 5510 250 74 69.5 25.3 | 230 54 41.3 34.8 20 461 6096 260 77 75.8 13.4 | 244 53 47.6 22.8 21 424 6706 255 85 82.1 22.0 | 240 62 53.9 31.4 22 400 7130 260 97 95.5 16.8 | 249 72 67.3 26.3 23 373 7620 255 101 97.6 26.1 | 243 78 69.3 35.6 24 341 8230 260 132 130.0 22.9 | 252 107 101.8 32.4 25 300 9120 255 143 138.1 37.0 | 247 119 109.9 46.5 26 299 9144 255 142 137.2 36.8 | 247 118 109.0 46.2 27 252 10278 260 162 159.5 28.1 | 254 137 131.3 37.6 28 250 10330 260 161 158.6 28.0 | 254 136 130.3 37.4 29 249 10363 260 162 159.5 28.1 | 254 137 131.3 37.6 30 238 10649 260 149 146.7 25.9 | 253 124 118.5 35.3 31 216 11278 255 135 130.4 34.9 | 247 111 102.2 44.4 32 200 11770 260 132 130.0 22.9 | 252 107 101.8 32.4 33 170 12802 265 127 126.5 11.1 | 258 100 98.3 20.5 34 155 13411 270 101 101.0 -0.0 | 263 73 72.8 9.4 35 150 13620 265 105 104.6 9.2 | 256 79 76.4 18.6 36 148 13716 265 106 105.6 9.2 | 256 80 77.4 18.7 37 128 14630 270 91 91.0 -0.0 | 261 63 62.8 9.4 38 116 15240 265 76 75.7 6.6 | 251 50 47.5 16.1 39 110 15545 260 71 69.9 12.3 | 242 47 41.7 21.8 40 100 16170 270 84 84.0 -0.0 | 260 57 55.8 9.4 41 95 16459 270 85 85.0 -0.0 | 261 58 56.8 9.4 42 86 17069 270 59 59.0 -0.0 | 253 32 30.8 9.4 43 74 17983 275 69 68.7 -6.0 | 265 41 40.5 3.4 44 71 18288 280 64 63.0 -11.1 | 273 35 34.8 -1.7 45 70 18340 285 48 46.4 -12.4 | 279 18 18.2 -3.0 46 67 18593 290 55 51.7 -18.8 | 292 25 23.5 -9.4 47 64 18898 265 46 45.8 4.0 | 233 22 17.6 13.5 48 58 19507 290 44 41.3 -15.0 | 293 14 13.1 -5.6 49 55 19812 265 35 34.9 3.1 | 208 14 6.7 12.5 50 50 20390 270 33 33.0 -0.0 | 207 11 4.8 9.4 51 50 20422 280 31 30.5 -5.4 | 210 5 2.3 4.1 52 47 20726 275 33 32.9 -2.9 | 215 8 4.7 6.6 53 45 21031 275 34 33.9 -3.0 | 221 9 5.7 6.5 54 43 21336 290 34 31.9 -11.6 | 300 4 3.7 -2.2 55 41 21641 270 29 29.0 -0.0 | 185 9 0.8 9.4 56 35 22555 290 25 23.5 -8.6 | 101 5 -4.7 0.9 57 32 23165 270 16 16.0 -0.0 | 128 15 -12.2 9.4 58 30 23470 260 15 14.8 2.6 | 132 18 -13.4 12.0 59 30 23540 285 20 19.3 -5.2 | 116 10 -8.9 4.3 60 28 24079 290 21 19.7 -7.2 | 105 9 -8.5 2.3 61 26 24384 265 9 9.0 0.8 | 118 22 -19.2 10.2 62 25 24689 255 16 15.5 4.1 | 137 19 -12.8 13.6 63 24 24994 315 21 14.8 -14.8 | 68 14 -13.4 -5.4 64 23 25298 320 12 7.7 -9.2 | 91 20 -20.5 0.2 65 22 25603 275 12 12.0 -1.0 | 117 18 -16.3 8.4 66 21 25908 245 5 4.5 2.1 | 116 26 -23.7 11.6 67 20 26090 345 17 4.4 -16.4 | 74 25 -23.8 -7.0 68 20 26213 330 14 7.0 -12.1 | 83 21 -21.2 -2.7 69 19 26518 345 17 4.4 -16.4 | 74 25 -23.8 -7.0 70 18 26822 290 10 9.4 -3.4 | 108 20 -18.8 6.0 71 17 27127 285 11 10.6 -2.8 | 111 19 -17.6 6.6 72 16 27432 340 9 3.1 -8.5 | 92 25 -25.1 1.0 73 16 27737 10 10 -1.7 -9.8 | 89 30 -29.9 -0.4 74 15 28042 335 10 4.2 -9.1 | 91 24 -24.0 0.4 75 13 28651 325 4 2.3 -3.3 | 103 27 -25.9 6.2 76 13 28956 360 10 -0.0 -10.0 | 89 28 -28.2 -0.6 77 12 29566 55 16 -13.1 -9.2 | 90 41 -41.3 0.3 78 11 29870 70 13 -12.2 -4.4 | 97 41 -40.4 5.0 79 11 30175 60 19 -16.5 -9.5 | 90 45 -44.7 -0.1 80 10 30590 100 14 -13.8 2.4 | 106 44 -42.0 11.9 81 7 32980 110 17 -16.0 5.8 | 109 47 -44.2 15.3 Wind Parameters Mean winds (0-6000m): 258.5 at 39.7 knts Storm direction: 288.5 at 29.7 knts Shear (0-3000m) pos: 5.5 neg: 2.2 tot: 7.6 10-3/s Storm rel Dir Shear (0-3000m): 94.3 deg Storm rel helicity (0-3000m) pos: 124.4 neg: -13.5 tot: 110.9 m^2/s^2 ave: 37.0 10^-3 m/s^2 rel: 0.47 Storm rel vorticity (0-3000m) horiz: 9.3 stream: 4.4 10^-3/s Energy-Hel index: 0.01 Bulk Rich Number: 0.16 Bulk Shear: 183.48 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 ------------------------------------------------------------------------------- 500 218 3 115 29| 0.0 2.8 2.8| 20.0 -0.7 19.3 38.6 0.80| 3.3 2.6 1000 241 4 115 27| 3.5 1.4 4.9| 37.5 -12.9 24.6 24.6 0.32| 5.8 1.8 1500 261 8 117 23| 6.6 0.9 7.5| 53.8 -12.9 40.9 27.3 0.29| 8.5 2.5 2000 262 11 123 20| 4.9 3.3 8.2| 76.2 -12.9 63.3 31.6 0.39| 8.9 3.5 2500 258 14 131 19| 4.6 2.6 7.2| 92.0 -13.5 78.5 31.4 0.40| 8.7 3.5 3000 259 17 138 17| 5.5 2.2 7.6|124.4 -13.5 110.9 37.0 0.47| 9.3 4.4 4000 261 25 163 14| 5.7 2.9 8.6|183.2 -13.5 169.6 42.4 0.45| 10.4 4.7 5000 261 33 195 15| 4.6 3.2 7.8|183.2 -45.3 137.9 27.6 0.37| 9.4 3.5 6000 259 40 212 20| 4.5 3.5 8.0|372.8-109.4 263.4 43.9 0.37| 9.9 3.6 Wrote GIF file: /home/apache/climate/data/raob//KIAD/skewt/KIAD.skewt.20251206.12.gif