UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025120400.upa.cvt Date: 0000Z 4 DEC 25 Searching for KIAD... Searching the city database file for: KIAD ... Date:0000Z 4 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 1008 98 2.6 -3.4 65 6.0 0.3 0 0 275.1 275.6 273.0 283.2 2.95 1 1006 112 4.8 -4.2 52 9.0 1.3 1 1 277.5 277.9 274.1 285.2 2.78 2 1004 126 5.0 -5.0 48 10.0 1.1 2 1 277.8 278.3 274.1 285.2 2.62 3 1000 155 4.8 -4.2 52 9.0 1.3 5 3 278.0 278.4 274.4 285.8 2.80 4 925 785 -0.5 -5.1 71 4.6 -2.2 215 8 278.8 279.3 274.9 286.7 2.82 5 872 1253 -3.9 -6.3 83 2.4 -4.8 271 13 280.0 280.5 275.5 287.7 2.73 6 862 1344 -3.5 -9.5 63 6.0 -5.5 286 18 281.3 281.7 275.4 287.5 2.15 7 860 1363 -3.3 -11.3 54 8.0 -5.8 289 20 281.7 282.1 275.2 287.2 1.87 8 858 1381 -1.3 -30.3 9 29.0 -7.2 292 21 284.0 284.1 274.1 285.2 0.36 9 855 1409 -0.9 -32.9 7 32.0 -7.1 297 22 284.7 284.8 274.3 285.6 0.28 10 850 1456 -1.1 -29.1 10 28.0 -7.0 305 25 285.0 285.1 274.7 286.3 0.41 11 843 1522 -1.3 -18.3 26 17.0 -6.0 300 25 285.5 285.6 276.0 288.7 1.07 12 837 1579 -0.9 -20.9 20 20.0 -6.1 300 24 286.5 286.6 276.2 289.1 0.86 13 834 1607 -0.7 -36.7 5 36.0 -7.2 300 24 287.0 287.0 275.4 287.6 0.20 14 829 1655 -0.5 -26.5 12 26.0 -6.5 300 24 287.7 287.8 276.3 289.3 0.53 15 817 1772 -0.7 -25.7 13 25.0 -6.6 300 23 288.7 288.8 276.9 290.5 0.58 16 814 1801 -0.5 -32.5 7 32.0 -7.0 300 22 289.2 289.2 276.7 290.2 0.31 17 804 1900 -0.3 -30.3 8 30.0 -6.8 299 22 290.4 290.5 277.5 291.7 0.38 18 792 2020 -0.5 -36.5 5 36.0 -7.3 297 21 291.5 291.5 277.7 292.2 0.21 19 774 2204 -0.9 -25.9 13 25.0 -7.0 293 21 292.9 293.1 279.0 294.9 0.60 20 769 2255 -0.9 -16.9 29 16.0 -5.8 291 21 293.5 293.7 280.3 297.6 1.32 21 767 2276 -0.9 -16.9 29 16.0 -5.8 290 21 293.7 293.9 280.4 297.8 1.33 22 761 2339 -1.3 -15.3 34 14.0 -5.8 288 20 293.9 294.2 280.7 298.6 1.53 23 744 2518 -2.3 -17.3 31 15.0 -6.8 280 22 294.8 295.0 280.8 298.9 1.32 24 742 2540 -2.3 -17.3 31 15.0 -6.8 278 22 295.0 295.2 281.0 299.1 1.32 25 730 2669 -1.9 -20.9 22 19.0 -7.2 270 25 296.8 297.0 281.3 299.9 0.99 26 729 2680 -1.7 -21.7 20 20.0 -7.2 269 26 297.1 297.3 281.4 300.1 0.92 27 727 2702 -1.5 -19.5 24 18.0 -6.8 268 26 297.6 297.8 281.8 301.1 1.12 28 725 2724 -0.7 -9.7 51 9.0 -4.1 266 27 298.7 299.2 284.0 306.4 2.52 29 708 2913 -1.9 -9.9 54 8.0 -4.9 265 32 299.4 299.9 284.2 307.2 2.54 30 700 3003 -2.3 -10.3 54 8.0 -5.3 265 34 299.9 300.4 284.4 307.6 2.49 31 698 3026 -2.5 -9.5 59 7.0 -5.2 265 34 300.0 300.4 284.6 308.1 2.66 32 679 3244 -3.1 -16.1 36 13.0 -7.3 261 38 301.7 302.0 284.1 306.7 1.60 33 670 3350 -3.7 -15.7 39 12.0 -7.6 260 40 302.1 302.5 284.4 307.5 1.68 34 661 3456 -3.7 -22.7 21 19.0 -8.9 258 41 303.3 303.5 284.0 306.4 0.93 35 647 3625 -4.1 -30.1 11 26.0 -10.1 256 44 304.7 304.8 284.0 306.4 0.48 36 641 3699 -4.3 -27.3 15 23.0 -9.9 255 46 305.3 305.4 284.4 307.5 0.64 37 630 3835 -4.9 -23.9 21 19.0 -10.0 254 48 306.1 306.3 284.9 309.1 0.88 38 615 4024 -5.9 -25.9 19 20.0 -10.9 252 52 307.1 307.3 285.2 309.6 0.75 39 610 4088 -5.9 -27.9 16 22.0 -11.2 252 53 307.8 308.0 285.3 310.0 0.63 40 567 4656 -9.5 -34.5 11 25.0 -14.3 241 58 310.1 310.2 285.8 311.4 0.36 41 551 4877 -10.1 -42.1 5 32.0 -15.3 245 64 311.9 312.0 286.2 312.6 0.17 42 544 4976 -9.9 -43.9 4 34.0 -15.2 244 66 313.3 313.3 286.7 313.8 0.14 43 500 5620 -14.9 -43.9 6 29.0 -19.0 240 81 314.9 314.9 287.2 315.5 0.16 44 476 5988 -18.3 -39.3 14 21.0 -21.4 240 81 315.1 315.2 287.5 316.1 0.27 45 424 6839 -24.3 -55.3 4 31.0 -26.8 246 79 318.1 318.1 288.2 318.3 0.05 46 402 7224 -26.9 -54.9 5 28.0 -29.0 250 79 319.6 319.6 288.6 319.8 0.06 47 400 7260 -27.1 -52.1 7 25.0 -29.2 250 79 319.8 319.8 288.8 320.1 0.08 48 393 7387 -27.9 -45.9 16 18.0 -29.6 250 78 320.3 320.4 289.0 320.9 0.16 49 341 8393 -36.3 -52.3 18 16.0 -37.2 257 80 322.2 322.2 289.5 322.5 0.09 50 333 8557 -37.5 -58.5 9 21.0 -38.5 259 81 322.7 322.7 289.6 322.9 0.04 51 300 9270 -43.9 -57.9 20 14.0 -44.4 265 87 323.5 323.5 289.9 323.7 0.05 52 283 9657 -47.3 -58.3 27 11.0 -47.6 265 86 324.0 324.1 290.0 324.3 0.05 53 279 9751 -46.5 -66.5 9 20.0 -47.0 265 86 326.5 326.5 290.7 326.6 0.02 54 258 10265 -49.1 -64.1 16 15.0 -49.4 272 107 330.1 330.1 291.7 330.2 0.03 55 253 10392 -49.7 -70.7 7 21.0 -50.1 274 112 331.0 331.0 292.0 331.1 0.01 56 252 10418 -49.7 -68.7 9 19.0 -50.1 274 113 331.4 331.4 292.1 331.5 0.01 57 250 10470 -50.1 -66.1 14 16.0 -50.4 275 115 331.6 331.6 292.2 331.7 0.02 58 200 11900 -58.9 -68.9 26 10.0 -59.0 265 126 339.5 339.5 294.2 339.6 0.02 59 189 12254 -60.4 -71.2 23 10.8 -60.5 265 131 342.6 342.6 295.0 342.7 0.01 60 163 13169 -64.3 -77.3 15 13.0 -64.4 260 122 350.9 350.9 296.8 350.9 0.01 61 150 13680 -62.5 -83.5 4 21.0 -62.6 265 103 362.4 362.4 299.2 362.4 0.00 62 100 16170 -64.3 -87.3 3 23.0 -64.5 265 74 403.5 403.5 305.7 403.5 0.00 63 91 16747 -62.7 -87.7 2 25.0 -62.9 265 70 417.7 417.7 307.4 417.7 0.00 64 87 17023 -63.7 -87.7 2 24.0 -63.9 265 66 421.1 421.1 307.9 421.1 0.00 65 79 17616 -61.5 -88.5 2 27.0 -61.8 265 57 437.4 437.4 309.6 437.4 0.00 66 75 17936 -63.1 -88.1 2 25.0 -63.4 257 46 440.6 440.6 310.0 440.6 0.00 67 70 18360 -62.5 -88.5 2 26.0 -62.8 270 42 450.7 450.7 310.9 450.7 0.00 68 67 18630 -63.3 -88.3 2 25.0 -63.6 269 41 454.6 454.6 311.3 454.6 0.00 69 62 19109 -60.7 -88.7 1 28.0 -61.2 262 39 470.6 470.6 312.7 470.6 0.00 70 58 19524 -60.5 -88.5 1 28.0 -61.0 256 37 480.1 480.1 313.5 480.1 0.00 71 53 20081 -63.5 -89.5 2 26.0 -63.8 261 31 485.7 485.7 313.9 485.7 0.00 72 50 20440 -62.1 -89.1 2 27.0 -62.6 265 38 497.1 497.1 314.8 497.2 0.00 73 47 20824 -59.5 -88.5 1 29.0 -60.2 268 36 512.3 512.3 315.8 512.3 0.00 74 45 21095 -60.9 -88.9 1 28.0 -61.4 274 31 515.3 515.3 316.0 515.3 0.00 75 42 21526 -58.5 -88.5 1 30.0 -59.3 284 21 531.5 531.5 317.0 531.5 0.00 76 34 22842 -61.7 -89.7 1 28.0 -62.4 252 12 556.2 556.2 318.4 556.2 0.00 77 31 23416 -60.1 -89.1 1 29.0 -61.0 263 13 575.4 575.4 319.5 575.4 0.00 78 30 23620 -61.1 -89.1 1 28.0 -61.9 265 11 578.1 578.1 319.6 578.1 0.00 79 28 24048 -61.5 -90.5 1 29.0 -62.3 249 14 588.5 588.5 320.0 588.5 0.00 80 22 25554 -58.3 -89.3 1 31.0 -59.7 304 15 640.0 640.0 322.3 640.1 0.01 TRP 163 13169 -64.3 -77.3 15 13.0 -64.4 260 122 350.9 350.9 296.8 350.9 0.01 WND 189 12254 -60.4 -71.2 23 10.8 -60.5 265 131 342.6 342.6 295.0 342.7 0.01 Sounding variables and indices 1000-500 mb thick: 5465.00 m Freezing level: 932.08 mb = 725.57 m = 2380.44 ft Wetbulb zero: 972.88 mb = 377.21 m = 1237.57 ft Precipitable water: 0.30 inches Sfc-500 mean rel hum: 30.18 % Est. max temperature: 11.52 C = 52.74 F Sfc-Lift cond lev (LCL): 918.37 mb = 842.12 m = 2762.82 ft T: -0.91 C 700-500 lapse rate: 4.81 C/km ThetaE index: 2.56 C Layer 862.0- 855.0 mb Conv cond level (CCL): 520.11 mb = 5318.80 m = 17449.91 ft Mean mixing ratio: 2.80 g/kg Conv temperature: 41.73 C = 107.11 F Cap Strength: 23.83 C Lifted Index: 24.16 C Risk: None Lifted Index @300 mb: 26.39 C Lifted Index @700 mb: 15.84 C Showalter Index: 24.16 C Risk: None Total Totals Index: -0.40 C Risk: None Vertical Totals Index: 13.80 C Cross Totals Index: -14.20 C K Index: -23.30 Risk: None Sweat Index: 131.00 Risk: None Energy Index: 6.25 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 2.89 J/kg Max Up Vert Vel: 2.40 m/s Conv Inhibition (B-): 50170.73 J/kg Cap Strength: 24.14 C Lift Cond Lev (LCL): 864.31 mb = 1323.34 m = 4341.60 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 282 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 1008 98 0 0 -0.0 -0.0 | 102 30 -28.9 6.1 1 1000 155 5 3 -0.3 -3.0 | 96 29 -29.2 3.1 2 982 305 175 4 -0.3 4.0 | 109 31 -29.2 10.1 3 945 610 210 7 3.5 6.1 | 116 28 -25.4 12.1 4 925 785 215 8 4.6 6.6 | 117 27 -24.3 12.6 5 910 914 215 6 3.4 4.9 | 113 28 -25.5 11.0 6 876 1219 265 11 11.0 1.0 | 111 19 -17.9 7.0 7 850 1456 305 25 20.5 -14.3 | 46 12 -8.4 -8.3 8 843 1524 300 25 21.7 -12.5 | 48 10 -7.2 -6.4 9 811 1829 300 22 19.1 -11.0 | 63 11 -9.8 -4.9 10 781 2134 295 21 19.0 -8.9 | 74 10 -9.9 -2.8 11 751 2438 285 20 19.3 -5.2 | 95 10 -9.6 0.9 12 723 2743 265 27 26.9 2.4 | 167 9 -2.0 8.4 13 700 3003 265 34 33.9 3.0 | 209 10 5.0 9.0 14 643 3658 255 45 43.5 11.6 | 219 23 14.6 17.7 15 595 4267 250 57 53.6 19.5 | 224 36 24.7 25.6 16 572 4572 240 56 48.5 28.0 | 210 39 19.6 34.1 17 550 4877 245 64 58.0 27.0 | 221 44 29.1 33.1 18 500 5620 240 81 70.1 40.5 | 222 62 41.3 46.6 19 488 5791 240 83 71.9 41.5 | 222 64 43.0 47.6 20 469 6096 240 80 69.3 40.0 | 221 61 40.4 46.1 21 400 7260 250 79 74.2 27.0 | 234 56 45.3 33.1 22 380 7620 250 75 70.5 25.7 | 233 52 41.6 31.7 23 305 9144 265 85 84.7 7.4 | 256 57 55.8 13.5 24 300 9270 265 87 86.7 7.6 | 257 59 57.8 13.7 25 279 9754 265 86 85.7 7.5 | 257 58 56.8 13.6 26 250 10470 275 115 114.6 -10.0 | 273 86 85.7 -3.9 27 231 10973 270 124 124.0 -0.0 | 266 95 95.1 6.1 28 210 11582 270 115 115.0 -0.0 | 266 86 86.1 6.1 29 200 11900 265 126 125.5 11.0 | 260 98 96.6 17.1 30 189 12254 265 131 130.5 11.4 | 260 103 101.6 17.5 31 182 12497 265 131 130.5 11.4 | 260 103 101.6 17.5 32 163 13169 260 122 120.1 21.2 | 253 95 91.3 27.3 33 157 13411 265 123 122.5 10.7 | 260 95 93.6 16.8 34 150 13680 265 103 102.6 9.0 | 258 75 73.7 15.1 35 142 14021 265 103 102.6 9.0 | 258 75 73.7 15.1 36 128 14630 270 108 108.0 -0.0 | 266 79 79.1 6.1 37 116 15240 265 93 92.6 8.1 | 257 65 63.8 14.2 38 105 15850 265 89 88.7 7.8 | 257 61 59.8 13.8 39 100 16154 270 96 96.0 -0.0 | 265 67 67.1 6.1 40 100 16170 265 74 73.7 6.4 | 254 47 44.8 12.5 41 95 16459 265 74 73.7 6.4 | 254 47 44.8 12.5 42 78 17678 265 56 55.8 4.9 | 248 29 26.9 11.0 43 74 17983 255 44 42.5 11.4 | 218 22 13.6 17.5 44 71 18288 260 48 47.3 8.3 | 232 23 18.4 14.4 45 70 18360 270 42 42.0 -0.0 | 245 14 13.1 6.1 46 67 18593 270 41 41.0 -0.0 | 243 14 12.1 6.1 47 58 19507 255 37 35.7 9.6 | 204 17 6.8 15.6 48 55 19812 265 33 32.9 2.9 | 204 10 4.0 8.9 49 50 20422 255 28 27.0 7.2 | 172 13 -1.8 13.3 50 50 20440 265 38 37.9 3.3 | 224 13 9.0 9.4 51 48 20726 265 38 37.9 3.3 | 224 13 9.0 9.4 52 45 21031 275 33 32.9 -2.9 | 231 5 4.0 3.2 53 43 21336 270 23 23.0 -0.0 | 136 8 -5.9 6.1 54 39 21946 315 18 12.7 -12.7 | 68 17 -16.2 -6.7 55 37 22250 265 5 5.0 0.4 | 105 25 -23.9 6.5 56 36 22555 215 13 7.5 10.6 | 128 27 -21.4 16.7 57 34 22860 255 12 11.6 3.1 | 118 20 -17.3 9.2 58 32 23165 260 15 14.8 2.6 | 122 17 -14.1 8.7 59 30 23620 265 11 11.0 1.0 | 111 19 -17.9 7.0 60 29 23774 240 15 13.0 7.5 | 130 21 -15.9 13.6 61 26 24079 270 11 11.0 -0.0 | 109 19 -17.9 6.1 62 24 24384 270 21 21.0 -0.0 | 128 10 -7.9 6.1 63 22 24689 300 16 13.9 -8.0 | 83 15 -15.0 -1.9 64 20 24994 340 10 3.4 -9.4 | 83 26 -25.5 -3.3 65 19 25298 25 3 -1.3 -2.7 | 96 30 -30.2 3.4 66 16 25908 290 14 13.2 -4.8 | 95 16 -15.7 1.3 Wind Parameters Mean winds (0-6000m): 251.9 at 39.4 knts Storm direction: 281.9 at 29.5 knts Shear (0-3000m) pos: 4.4 neg: 4.9 tot: 9.2 10-3/s Storm rel Dir Shear (0-3000m): 110.9 deg Storm rel helicity (0-3000m) pos: 149.1 neg: -76.7 tot: 72.4 m^2/s^2 ave: 24.1 10^-3 m/s^2 rel: 0.25 Storm rel vorticity (0-3000m) horiz: 12.4 stream: 3.1 10^-3/s Energy-Hel index: 0.00 Bulk Rich Number: 0.02 Bulk Shear: 182.94 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 ------------------------------------------------------------------------------- 500 195 4 110 30| 0.0 7.1 7.1| 79.1 -19.1 60.0 119.9 0.52| 14.6 7.5 1000 213 6 113 28| 2.8 3.5 6.3| 90.2 -30.2 60.0 60.0 0.34| 11.2 3.8 1500 266 10 110 20| 8.7 2.4 11.1| 92.8 -76.7 16.1 10.7 -0.14| 15.4 -2.1 2000 283 13 101 17| 6.5 2.4 8.9|103.2 -76.7 26.5 13.2 -0.05| 12.6 -0.6 2500 284 15 100 15| 5.2 3.6 8.8|122.1 -76.7 45.4 18.2 0.10| 12.0 1.2 3000 278 17 107 12| 4.4 4.9 9.2|149.1 -76.7 72.4 24.1 0.25| 12.4 3.1 4000 267 24 146 9| 3.3 6.2 9.5|169.3 -76.7 92.6 23.1 0.23| 11.9 2.8 5000 258 31 187 13| 3.5 5.8 9.2|259.6-158.9 100.7 20.1 0.18| 12.3 2.2 6000 252 39 205 20| 2.9 5.8 8.7|270.1-178.2 91.9 15.3 0.15| 11.7 1.8 Wrote GIF file: /home/apache/climate/data/raob//KIAD/skewt/KIAD.skewt.20251204.00.gif