UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025041800.upa.cvt Date: 0000Z 18 APR 25 Searching for KIAD... Searching the city database file for: KIAD ... Date:0000Z 18 APR 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 1011 98 16.4 -2.6 27 19.0 7.7 145 4 288.6 289.2 280.3 297.7 3.12 1 1004 151 16.2 -6.8 20 23.0 6.5 142 3 289.0 289.4 279.4 295.8 2.28 2 1000 182 15.8 -7.2 20 23.0 6.2 140 3 289.0 289.3 279.3 295.5 2.22 3 926 827 9.8 -7.2 29 17.0 2.9 213 6 289.2 289.7 279.7 296.3 2.40 4 925 836 9.8 -8.2 27 18.0 2.7 215 6 289.3 289.7 279.5 295.9 2.22 5 866 1379 5.6 -9.4 33 15.0 -0.1 258 14 290.5 290.8 280.0 296.9 2.16 6 857 1464 5.0 -12.0 28 17.0 -1.0 262 15 290.7 291.0 279.6 296.1 1.78 7 850 1531 5.2 -13.8 24 19.0 -1.3 270 21 291.6 291.9 279.7 296.3 1.55 8 837 1657 4.4 -15.6 22 20.0 -2.1 280 19 292.0 292.3 279.6 296.2 1.35 9 817 1853 4.4 -33.6 4 38.0 -4.1 296 17 294.1 294.1 279.1 295.0 0.27 10 816 1863 4.4 -34.6 4 39.0 -4.1 297 17 294.2 294.2 279.1 295.0 0.25 11 805 1973 4.4 -31.6 5 36.0 -4.0 304 17 295.3 295.4 279.7 296.4 0.34 12 775 2281 2.0 -31.0 7 33.0 -5.6 315 15 296.0 296.0 280.1 297.2 0.37 13 744 2609 0.6 -33.4 6 34.0 -6.8 312 16 297.9 298.0 280.8 298.9 0.31 14 734 2718 1.0 -33.0 6 34.0 -6.5 310 18 299.5 299.6 281.6 300.6 0.32 15 700 3097 -1.5 -32.5 7 31.0 -8.3 305 18 300.8 300.9 282.2 302.0 0.36 16 671 3432 -3.9 -28.9 12 25.0 -9.7 305 22 301.8 301.9 282.8 303.5 0.52 17 661 3551 -4.5 -20.5 27 16.0 -9.1 305 24 302.4 302.6 283.8 306.1 1.13 18 632 3902 -7.5 -21.5 32 14.0 -11.3 309 26 302.9 303.1 284.0 306.4 1.08 19 607 4214 -9.9 -24.9 28 15.0 -13.5 314 27 303.7 303.8 284.0 306.4 0.83 20 591 4420 -11.3 -24.3 33 13.0 -14.4 314 28 304.4 304.5 284.3 307.3 0.90 21 587 4472 -10.9 -35.9 11 25.0 -15.3 313 28 305.4 305.5 284.0 306.5 0.30 22 586 4485 -10.7 -39.7 7 29.0 -15.4 313 28 305.8 305.8 284.0 306.5 0.21 23 575 4631 -10.9 -42.9 5 32.0 -15.7 312 29 307.2 307.2 284.5 307.8 0.15 24 568 4725 -11.7 -32.7 16 21.0 -15.7 311 29 307.4 307.4 284.9 308.8 0.43 25 543 5068 -13.5 -47.5 4 34.0 -17.9 311 32 309.2 309.2 285.1 309.6 0.10 26 532 5224 -14.7 -33.7 18 19.0 -18.1 312 33 309.6 309.7 285.7 311.0 0.42 27 516 5454 -16.7 -37.7 14 21.0 -19.9 314 35 309.9 309.9 285.7 310.9 0.29 28 506 5601 -17.3 -49.3 4 32.0 -20.8 314 36 310.9 310.9 285.8 311.2 0.08 29 500 5690 -17.9 -40.9 11 23.0 -21.1 315 37 311.2 311.3 286.0 312.0 0.21 30 497 5735 -18.3 -37.3 17 19.0 -21.2 316 37 311.3 311.3 286.2 312.4 0.31 31 463 6258 -22.3 -44.3 12 22.0 -24.8 319 38 312.6 312.7 286.5 313.2 0.16 32 413 7083 -29.7 -50.7 11 21.0 -31.3 312 38 313.5 313.5 286.7 313.8 0.09 33 400 7310 -31.7 -46.7 21 15.0 -32.9 310 37 313.8 313.8 286.8 314.3 0.14 34 384 7597 -34.5 -45.5 32 11.0 -35.3 310 37 313.8 313.8 286.9 314.4 0.17 35 377 7725 -35.5 -44.5 39 9.0 -36.2 311 39 314.1 314.2 287.0 314.8 0.19 36 354 8161 -38.3 -53.3 19 15.0 -39.1 314 46 316.1 316.1 287.5 316.4 0.08 37 343 8377 -40.3 -50.3 33 10.0 -40.8 316 49 316.2 316.2 287.6 316.6 0.11 38 342 8397 -40.3 -52.3 27 12.0 -40.9 316 50 316.5 316.5 287.7 316.8 0.09 39 327 8701 -42.5 -50.5 41 8.0 -42.9 319 55 317.5 317.6 288.1 318.0 0.11 40 318 8889 -44.1 -53.1 36 9.0 -44.5 321 59 317.9 317.9 288.2 318.2 0.09 41 317 8910 -44.1 -55.1 28 11.0 -44.5 321 60 318.1 318.2 288.2 318.4 0.07 42 315 8953 -43.9 -60.9 14 17.0 -44.4 322 62 319.0 319.0 288.5 319.1 0.03 43 314 8974 -43.5 -60.5 14 17.0 -44.0 322 63 319.8 319.9 288.7 320.0 0.04 44 309 9082 -43.7 -54.7 29 11.0 -44.2 324 68 321.0 321.1 289.2 321.3 0.07 45 308 9104 -43.9 -55.9 25 12.0 -44.3 324 69 321.1 321.1 289.2 321.3 0.06 46 300 9280 -45.5 -55.5 32 10.0 -45.9 320 83 321.2 321.2 289.2 321.5 0.07 47 295 9392 -46.9 -56.9 31 10.0 -47.2 320 86 320.8 320.8 289.0 321.0 0.06 48 291 9482 -47.7 -56.7 35 9.0 -48.0 320 88 320.9 320.9 289.1 321.1 0.06 49 281 9712 -48.7 -54.7 50 6.0 -48.9 320 94 322.7 322.7 289.7 323.0 0.08 50 280 9736 -49.1 -54.1 56 5.0 -49.3 320 94 322.4 322.5 289.6 322.8 0.09 51 276 9830 -49.7 -55.7 49 6.0 -49.9 320 95 322.9 322.9 289.8 323.2 0.07 52 274 9878 -50.1 -56.1 49 6.0 -50.3 319 96 323.0 323.0 289.8 323.3 0.07 53 272 9926 -50.5 -57.5 43 7.0 -50.7 319 96 323.1 323.1 289.8 323.3 0.06 54 266 10071 -51.7 -56.7 55 5.0 -51.8 318 97 323.4 323.4 289.9 323.7 0.07 55 262 10169 -52.5 -58.5 48 6.0 -52.7 317 98 323.6 323.7 289.9 323.9 0.05 56 258 10268 -53.3 -61.3 37 8.0 -53.5 316 99 323.9 323.9 290.0 324.0 0.04 57 250 10470 -55.1 -62.1 42 7.0 -55.2 315 100 324.1 324.2 290.0 324.3 0.04 58 220 11270 -62.4 -68.5 44 6.0 -62.5 320 107 324.9 324.9 290.3 325.0 0.02 59 219 11298 -62.7 -68.7 44 6.0 -62.7 320 107 324.9 324.9 290.3 325.0 0.02 60 200 11860 -59.5 -83.5 3 24.0 -59.7 325 75 338.5 338.5 294.0 338.5 0.00 61 150 13670 -57.5 -83.5 2 26.0 -57.8 290 56 371.0 371.0 300.8 371.0 0.00 62 100 16220 -59.3 -87.3 1 28.0 -59.6 290 51 413.2 413.2 306.9 413.2 0.00 63 93 16674 -58.5 -86.5 2 28.0 -58.9 293 48 423.4 423.4 308.1 423.4 0.00 64 86 17162 -61.5 -87.5 2 26.0 -61.8 300 45 426.9 426.9 308.5 426.9 0.00 65 82 17458 -59.9 -86.9 2 27.0 -60.3 300 51 436.1 436.1 309.5 436.1 0.00 66 75 18012 -61.9 -87.9 2 26.0 -62.2 302 34 443.1 443.1 310.2 443.1 0.00 67 70 18440 -59.9 -87.9 1 28.0 -60.3 300 30 456.2 456.2 311.4 456.2 0.00 68 66 18809 -58.3 -86.3 2 28.0 -58.9 296 31 467.5 467.5 312.4 467.5 0.00 69 64 19002 -59.5 -87.5 1 28.0 -60.0 295 26 469.0 469.0 312.5 469.0 0.00 70 63 19101 -58.3 -87.3 1 29.0 -58.9 290 22 473.7 473.7 313.0 473.7 0.00 71 58 19619 -60.3 -87.3 2 27.0 -60.8 326 14 480.5 480.5 313.5 480.6 0.00 72 56 19839 -58.5 -87.5 1 29.0 -59.1 338 12 489.5 489.5 314.2 489.5 0.00 73 54 20067 -59.5 -87.5 1 28.0 -60.1 278 10 492.3 492.3 314.4 492.3 0.00 74 51 20425 -59.1 -88.1 1 29.0 -59.7 275 21 501.4 501.4 315.1 501.4 0.00 75 50 20550 -56.3 -87.3 1 31.0 -57.2 285 21 510.8 510.8 315.7 510.8 0.00 76 49 20679 -55.5 -86.5 1 31.0 -56.5 282 22 515.7 515.7 316.0 515.7 0.00 77 42 21658 -57.1 -86.1 1 29.0 -58.0 291 10 534.9 534.9 317.2 535.0 0.01 TRP 219 11298 -62.7 -68.7 44 6.0 -62.7 320 107 324.9 324.9 290.3 325.0 0.02 WND 220 11270 -62.4 -68.5 44 6.0 -62.5 320 107 324.9 324.9 290.3 325.0 0.02 Sounding variables and indices 1000-500 mb thick: 5508.00 m Freezing level: 720.40 mb = 2869.48 m = 9414.20 ft Wetbulb zero: 868.09 mb = 1358.96 m = 4458.49 ft Precipitable water: 0.23 inches Sfc-500 mean rel hum: 17.33 % Est. max temperature: 18.35 C = 65.04 F Sfc-Lift cond lev (LCL): 758.76 mb = 2451.30 m = 8042.23 ft T: 1.27 C 700-500 lapse rate: 6.32 C/km ThetaE index: 2.19 C Layer 1004.0- 926.0 mb Conv cond level (CCL): 533.20 mb = 5206.39 m = 17081.14 ft Mean mixing ratio: 2.32 g/kg Conv temperature: 37.36 C = 99.24 F Cap Strength: 13.76 C Lifted Index: 13.90 C Risk: None Lifted Index @300 mb: 17.94 C Lifted Index @700 mb: 10.32 C Showalter Index: 13.66 C Risk: None Total Totals Index: 27.20 C Risk: None Vertical Totals Index: 23.10 C Cross Totals Index: 4.10 C K Index: -21.70 Risk: None Sweat Index: 79.00 Risk: None Energy Index: 3.36 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 1.47 J/kg Max Up Vert Vel: 1.71 m/s Conv Inhibition (B-): 29809.38 J/kg Cap Strength: 13.54 C Lift Cond Lev (LCL): 709.51 mb = 2989.15 m = 9806.80 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 337 at 16 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 1011 98 145 4 -2.3 3.3 | 154 20 -8.6 17.8 1 1000 182 140 3 -1.9 2.3 | 154 19 -8.2 16.8 2 985 305 155 4 -1.7 3.6 | 156 20 -8.0 18.1 3 950 610 165 1 -0.3 1.0 | 157 17 -6.6 15.5 4 925 836 215 6 3.4 4.9 | 172 20 -2.9 19.4 5 916 914 220 7 4.5 5.4 | 175 20 -1.8 19.9 6 883 1219 250 13 12.2 4.4 | 197 20 5.9 19.0 7 851 1524 265 15 14.9 1.3 | 209 18 8.6 15.8 8 850 1531 270 21 21.0 -0.0 | 225 21 14.7 14.5 9 819 1829 295 17 15.4 -7.2 | 231 12 9.1 7.3 10 789 2134 315 16 11.3 -11.3 | 237 6 5.0 3.2 11 760 2438 315 14 9.9 -9.9 | 218 6 3.6 4.6 12 731 2743 310 18 13.8 -11.6 | 248 8 7.5 2.9 13 700 3097 305 18 14.7 -10.3 | 244 9 8.4 4.2 14 651 3658 305 25 20.5 -14.3 | 269 14 14.2 0.2 15 601 4267 315 27 19.1 -19.1 | 290 14 12.8 -4.6 16 556 4877 310 30 23.0 -19.3 | 286 17 16.7 -4.8 17 500 5690 315 37 26.2 -26.2 | 300 23 19.9 -11.6 18 473 6096 320 38 24.4 -29.1 | 309 23 18.1 -14.6 19 435 6706 315 40 28.3 -28.3 | 302 26 22.0 -13.8 20 400 7310 310 37 28.3 -23.8 | 293 24 22.0 -9.3 21 382 7620 310 37 28.3 -23.8 | 293 24 22.0 -9.3 22 320 8839 320 57 36.6 -43.7 | 314 42 30.3 -29.1 23 306 9144 325 71 40.7 -58.2 | 322 56 34.4 -43.6 24 300 9280 320 83 53.4 -63.6 | 316 68 47.0 -49.1 25 279 9754 320 95 61.1 -72.8 | 317 80 54.8 -58.3 26 250 10470 315 100 70.7 -70.7 | 311 85 64.4 -56.2 27 220 11270 320 107 68.8 -82.0 | 317 92 62.5 -67.4 28 219 11298 320 107 68.8 -82.0 | 317 92 62.5 -67.4 29 209 11582 320 107 68.8 -82.0 | 317 92 62.5 -67.4 30 200 11860 325 75 43.0 -61.4 | 322 60 36.7 -46.9 31 181 12497 330 62 31.0 -53.7 | 328 46 24.7 -39.2 32 172 12802 315 47 33.2 -33.2 | 305 33 26.9 -18.7 33 150 13670 290 56 52.6 -19.2 | 276 47 46.3 -4.6 34 149 13716 290 50 47.0 -17.1 | 274 41 40.7 -2.6 35 117 15240 300 68 58.9 -34.0 | 290 56 52.6 -19.5 36 100 16220 290 51 47.9 -17.4 | 274 42 41.6 -2.9 37 96 16459 290 51 47.9 -17.4 | 274 42 41.6 -2.9 38 87 17069 300 43 37.2 -21.5 | 283 32 30.9 -7.0 39 79 17678 300 55 47.6 -27.5 | 287 43 41.3 -13.0 40 75 17983 305 34 27.9 -19.5 | 283 22 21.5 -5.0 41 72 18288 275 31 30.9 -2.7 | 244 27 24.6 11.8 42 70 18440 300 30 26.0 -15.0 | 271 20 19.7 -0.5 43 68 18593 285 37 35.7 -9.6 | 260 30 29.4 4.9 44 65 18898 300 29 25.1 -14.5 | 270 19 18.8 0.0 45 62 19202 285 19 18.4 -4.9 | 231 15 12.0 9.6 46 56 19812 345 12 3.1 -11.6 | 132 4 -3.2 2.9 47 54 20117 265 10 10.0 0.9 | 193 16 3.7 15.4 48 51 20422 275 21 20.9 -1.8 | 229 19 14.6 12.7 49 50 20550 285 21 20.3 -5.4 | 237 17 14.0 9.1 50 48 20726 280 23 22.7 -4.0 | 237 19 16.3 10.5 51 45 21031 310 14 10.7 -9.0 | 219 7 4.4 5.5 52 42 21336 290 10 9.4 -3.4 | 196 12 3.1 11.1 53 37 21946 20 8 -2.7 -7.5 | 128 11 -9.0 7.0 Wind Parameters Mean winds (0-6000m): 306.5 at 21.1 knts Storm direction: 336.5 at 15.8 knts Shear (0-3000m) pos: 3.4 neg: 0.5 tot: 3.9 10-3/s Storm rel Dir Shear (0-3000m): 89.4 deg Storm rel helicity (0-3000m) pos: 136.9 neg: -4.3 tot: 132.6 m^2/s^2 ave: 44.2 10^-3 m/s^2 rel: 0.55 Storm rel vorticity (0-3000m) horiz: 8.5 stream: 4.7 10^-3/s Energy-Hel index: 0.00 Bulk Rich Number: 0.02 Bulk Shear: 75.03 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 ------------------------------------------------------------------------------- 500 152 3 156 19| 3.1 0.0 3.1| 5.0 -0.2 4.9 9.7 0.20| 5.0 1.0 1000 200 4 166 19| 5.9 0.0 5.9| 58.8 -0.2 58.6 58.6 0.70| 8.4 5.9 1500 240 8 181 18| 7.9 0.0 7.9|124.5 -0.2 124.3 82.9 0.82| 10.3 8.4 2000 266 10 194 16| 5.2 0.0 5.2|131.4 -0.2 131.2 65.6 0.63| 10.8 6.8 2500 281 11 201 13| 4.1 0.0 4.1|134.2 -2.8 131.4 52.6 0.58| 9.5 5.5 3000 289 12 207 12| 3.4 0.5 3.9|136.9 -4.3 132.6 44.2 0.55| 8.5 4.7 4000 297 15 223 11| 2.9 1.1 4.0|165.1 -4.3 160.8 40.2 0.60| 7.7 4.6 5000 302 18 241 10| 2.6 1.2 3.8|176.1 -7.7 168.4 33.7 0.56| 6.9 3.9 6000 307 21 260 11| 2.7 1.0 3.7|216.9 -7.7 209.2 34.9 0.59| 6.5 3.8 Wrote GIF file: /home/apache/climate/data/raob//KIAD/skewt/KIAD.skewt.20250418.00.gif