UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025042100.upa.cvt Date: 0000Z 21 APR 25 Searching for KIAD... Searching the city database file for: KIAD ... Date:0000Z 21 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 1014 98 21.6 5.6 35 16.0 12.7 45 5 293.6 294.6 285.3 309.9 5.62 1 1000 212 20.6 5.6 37 15.0 12.3 50 9 293.8 294.8 285.4 310.3 5.70 2 925 877 14.2 4.2 51 10.0 8.9 90 7 293.8 294.8 285.4 310.1 5.59 3 906 1052 13.0 4.0 54 9.0 8.2 165 8 294.3 295.4 285.6 310.7 5.63 4 894 1165 14.2 7.2 63 7.0 10.2 222 10 296.7 298.0 287.9 317.6 7.14 5 875 1346 13.4 9.4 77 4.0 11.0 244 13 297.7 299.2 289.5 322.5 8.49 6 852 1570 12.2 9.3 82 2.9 10.4 245 14 298.7 300.3 290.0 324.1 8.66 7 850 1590 12.2 9.2 82 3.0 10.4 250 14 298.9 300.5 290.0 324.2 8.62 8 835 1739 11.2 8.3 82 2.9 9.5 268 18 299.4 300.9 289.9 323.7 8.25 9 802 2076 10.4 5.6 72 4.8 7.7 284 23 302.0 303.3 289.8 323.3 7.13 10 795 2149 9.8 5.6 75 4.2 7.4 285 24 302.1 303.5 289.9 323.6 7.19 11 775 2360 8.6 0.6 57 8.0 4.5 296 23 303.1 304.0 288.3 318.7 5.16 12 759 2532 7.2 0.2 61 7.0 3.6 303 23 303.4 304.3 288.3 318.9 5.12 13 738 2763 6.2 -2.8 52 9.0 1.8 309 25 304.7 305.5 288.0 317.6 4.22 14 704 3148 2.8 -4.2 60 7.0 -0.4 279 27 305.1 305.8 287.9 317.3 3.98 15 700 3194 2.6 -4.4 60 7.0 -0.6 275 27 305.4 306.1 287.9 317.5 3.94 16 696 3240 2.6 -6.4 51 9.0 -1.4 275 27 305.9 306.5 287.6 316.4 3.40 17 686 3357 3.8 -18.2 18 22.0 -3.7 275 26 308.5 308.7 286.4 312.8 1.33 18 683 3393 4.0 -14.0 26 18.0 -2.9 276 27 309.1 309.4 287.2 315.2 1.89 19 674 3500 3.4 -9.6 38 13.0 -2.1 277 31 309.6 310.1 288.2 318.3 2.74 20 668 3573 3.0 -10.0 38 13.0 -2.4 278 34 309.9 310.4 288.2 318.5 2.67 21 664 3621 3.0 -15.0 25 18.0 -3.7 279 36 310.5 310.8 287.5 316.3 1.79 22 662 3646 2.8 -15.2 25 18.0 -3.8 280 37 310.5 310.8 287.5 316.3 1.77 23 653 3756 2.2 -14.8 27 17.0 -4.1 284 36 311.0 311.4 287.8 317.1 1.86 24 615 4235 -2.3 -19.3 26 17.0 -7.8 291 33 311.3 311.5 287.3 315.7 1.35 25 582 4669 -6.3 -15.3 49 9.0 -9.4 281 34 311.5 311.9 288.1 318.0 2.00 26 578 4723 -6.7 -16.7 45 10.0 -10.0 279 34 311.7 312.0 287.9 317.5 1.79 27 553 5066 -8.9 -13.5 69 4.6 -10.5 272 38 313.0 313.5 289.0 321.0 2.44 28 550 5108 -9.1 -17.1 52 8.0 -11.7 271 39 313.3 313.6 288.5 319.3 1.82 29 548 5136 -9.1 -18.1 48 9.0 -11.9 271 39 313.6 313.9 288.5 319.2 1.68 30 540 5250 -9.9 -17.9 52 8.0 -12.4 270 41 314.0 314.3 288.6 319.7 1.73 31 537 5293 -9.9 -21.9 37 12.0 -13.3 271 42 314.5 314.7 288.3 318.6 1.23 32 517 5584 -12.1 -28.1 25 16.0 -15.8 273 47 315.3 315.4 288.0 317.8 0.73 33 515 5614 -12.1 -25.1 33 13.0 -15.4 273 48 315.6 315.8 288.4 318.9 0.97 34 511 5673 -11.3 -29.3 21 18.0 -15.4 274 49 317.3 317.4 288.6 319.6 0.66 35 501 5825 -11.9 -23.9 36 12.0 -15.1 275 52 318.3 318.6 289.4 322.2 1.11 36 500 5840 -11.9 -23.9 36 12.0 -15.1 275 52 318.5 318.7 289.5 322.3 1.11 37 498 5871 -12.1 -25.1 33 13.0 -15.4 274 52 318.7 318.8 289.4 322.1 1.00 38 493 5948 -12.7 -26.7 30 14.0 -16.1 273 52 318.8 319.0 289.3 321.9 0.87 39 472 6278 -15.7 -23.7 50 8.0 -17.7 274 50 319.1 319.3 289.8 323.2 1.20 40 468 6342 -16.1 -21.1 65 5.0 -17.5 275 49 319.4 319.7 290.2 324.6 1.52 41 463 6423 -16.5 -21.1 68 4.6 -17.8 277 47 319.9 320.2 290.3 325.1 1.53 42 460 6472 -16.1 -20.8 67 4.7 -17.4 278 46 321.0 321.3 290.7 326.4 1.58 43 454 6571 -16.7 -20.5 72 3.8 -17.8 280 44 321.4 321.8 290.9 327.1 1.65 44 437 6857 -18.7 -23.7 65 5.0 -20.0 286 39 322.4 322.7 290.8 326.9 1.29 45 423 7099 -20.7 -24.2 73 3.5 -21.5 291 37 322.9 323.1 290.9 327.3 1.28 46 414 7258 -21.7 -25.8 69 4.1 -22.7 292 39 323.6 323.8 291.0 327.5 1.13 47 400 7510 -23.9 -26.9 76 3.0 -24.5 295 42 323.9 324.1 291.0 327.6 1.06 48 380 7883 -26.7 -28.8 82 2.1 -27.1 294 44 325.0 325.2 291.2 328.3 0.93 49 373 8018 -27.5 -30.5 76 3.0 -28.0 294 45 325.7 325.9 291.3 328.6 0.81 50 362 8233 -29.1 -31.5 80 2.4 -29.5 293 47 326.4 326.5 291.5 329.1 0.76 51 356 8352 -29.9 -33.4 71 3.5 -30.4 293 49 326.8 327.0 291.5 329.2 0.64 52 351 8453 -30.7 -33.4 77 2.7 -31.1 292 50 327.1 327.2 291.6 329.5 0.65 53 350 8473 -30.7 -34.4 70 3.7 -31.2 292 50 327.4 327.5 291.6 329.5 0.59 54 343 8617 -31.9 -35.0 74 3.1 -32.3 292 51 327.6 327.7 291.6 329.7 0.57 55 334 8805 -33.5 -40.5 49 7.0 -34.3 291 53 327.9 328.0 291.5 329.2 0.33 56 300 9550 -39.7 -43.0 71 3.3 -40.0 290 61 329.4 329.5 291.9 330.5 0.29 57 250 10770 -50.5 -53.5 70 3.0 -50.6 285 68 331.0 331.0 292.1 331.4 0.10 58 219 11620 -56.0 -63.1 40 7.2 -56.1 275 79 335.3 335.3 293.2 335.5 0.04 59 200 12190 -59.7 -69.7 26 10.0 -59.8 285 64 338.2 338.2 293.9 338.3 0.02 60 150 13920 -74.3 -78.4 53 4.1 -74.3 275 46 342.1 342.1 294.8 342.1 0.01 61 100 16390 -63.9 -87.9 2 24.0 -64.1 275 30 404.3 404.3 305.7 404.3 0.00 62 95 16702 -66.1 -88.1 3 22.0 -66.2 278 28 405.9 405.9 306.0 405.9 0.00 63 91 16963 -65.1 -88.1 3 23.0 -65.3 271 32 412.9 412.9 306.9 412.9 0.00 64 82 17593 -66.9 -88.9 3 22.0 -67.1 258 39 421.7 421.7 307.9 421.7 0.00 65 80 17742 -64.7 -88.7 2 24.0 -64.9 255 40 429.3 429.3 308.7 429.3 0.00 66 70 18550 -67.7 -89.7 3 22.0 -67.8 320 27 439.5 439.6 309.8 439.6 0.00 67 69 18637 -67.9 -89.9 3 22.0 -68.1 307 38 440.9 440.9 310.0 440.9 0.00 68 66 18906 -64.9 -88.9 2 24.0 -65.1 317 25 453.1 453.1 311.1 453.1 0.00 69 65 18999 -64.9 -89.9 2 25.0 -65.1 296 25 455.1 455.1 311.3 455.1 0.00 70 63 19192 -60.7 -87.7 2 27.0 -61.1 255 24 468.4 468.4 312.5 468.4 0.00 71 61 19393 -59.7 -87.7 1 28.0 -60.2 271 24 475.0 475.0 313.1 475.0 0.00 72 54 20151 -62.5 -88.5 2 26.0 -62.9 277 6 485.4 485.4 313.9 485.4 0.00 73 52 20385 -59.9 -87.9 1 28.0 -60.4 258 14 496.7 496.7 314.7 496.7 0.00 74 50 20630 -59.9 -87.9 1 28.0 -60.5 305 5 502.3 502.3 315.1 502.3 0.00 75 49 20756 -59.5 -87.5 1 28.0 -60.1 283 9 506.2 506.2 315.4 506.2 0.00 76 47 21016 -60.7 -87.7 2 27.0 -61.3 309 4 509.4 509.4 315.6 509.4 0.00 77 42 21721 -57.9 -86.9 1 29.0 -58.7 307 9 533.0 533.0 317.1 533.0 0.00 78 38 22350 -59.3 -87.3 1 28.0 -60.1 18 11 544.9 544.9 317.8 544.9 0.01 79 33 23241 -55.7 -86.7 1 31.0 -57.1 79 10 576.9 576.9 319.5 576.9 0.01 80 30 23850 -54.5 -85.5 1 31.0 -56.2 125 5 596.1 596.1 320.5 596.1 0.01 81 29 24068 -54.3 -85.3 1 31.0 -56.1 115 4 602.4 602.4 320.7 602.5 0.01 82 27 24525 -55.5 -85.5 1 30.0 -57.2 126 6 611.5 611.5 321.1 611.6 0.01 83 25 25019 -53.7 -85.7 1 32.0 -55.8 206 7 630.3 630.3 321.9 630.3 0.01 84 25 25019 -53.7 -85.7 1 32.0 -55.8 206 7 630.3 630.3 321.9 630.3 0.01 85 24 25282 -53.5 -85.5 1 32.0 -55.7 246 5 638.2 638.3 322.2 638.3 0.01 86 23 25555 -54.7 -85.7 1 31.0 -56.8 288 2 642.5 642.5 322.4 642.6 0.01 87 21 26143 -51.3 -84.3 1 33.0 -54.3 327 10 669.7 669.7 323.4 669.9 0.02 88 20 26460 -51.3 -84.3 1 33.0 -54.4 345 14 679.1 679.2 323.7 679.3 0.02 89 19 26793 -51.7 -84.7 1 33.0 -54.8 348 14 687.9 687.9 324.0 688.1 0.02 90 17 27519 -49.7 -83.7 1 34.0 -53.7 39 10 716.6 716.6 325.0 716.8 0.02 91 14 28785 -51.7 -84.7 1 33.0 -55.6 341 8 750.7 750.7 326.0 750.9 0.02 92 11 30379 -43.5 -81.5 1 38.0 -51.5 313 15 834.1 834.1 328.1 834.6 0.05 93 10 31020 -43.7 -81.7 1 38.0 -52.0 5 24 856.4 856.4 328.5 856.9 0.05 94 8.3 32276 -41.1 -81.1 1 40.0 -51.7 279 17 913.5 913.6 329.7 914.2 0.07 95 7.8 32700 -38.7 -79.7 1 41.0 -51.0 250 14 939.5 939.6 330.2 940.5 0.09 96 7.3 33153 -39.7 -79.7 1 40.0 -51.7 219 12 953.4 953.5 330.4 954.5 0.10 97 7.0 33440 -38.7 -79.7 1 41.0 -51.5 200 10 969.1 969.1 330.7 970.2 0.10 98 6.6 33846 -36.9 -78.9 0 42.0 -51.1 993.1 993.1 331.1 994.5 0.12 99 6.3 34170 -32.9 -76.9 0 44.0 -50.0 1023.4 1023.5 331.6 1025.5 0.17 TRP 150 13920 -74.3 -78.4 53 4.1 -74.3 275 46 342.1 342.1 294.8 342.1 0.01 WND 219 11620 -56.0 -63.1 40 7.2 -56.1 275 79 335.3 335.3 293.2 335.5 0.04 Sounding variables and indices 1000-500 mb thick: 5628.00 m Freezing level: 634.42 mb = 3990.20 m = 13091.05 ft Wetbulb zero: 710.68 mb = 3070.77 m = 10074.60 ft Precipitable water: 0.99 inches Sfc-500 mean rel hum: 49.19 % Est. max temperature: 26.23 C = 79.21 F Sfc-Lift cond lev (LCL): 799.29 mb = 2103.83 m = 6902.25 ft T: 10.17 C 700-500 lapse rate: 5.48 C/km ThetaE index: 4.92 C Layer 775.0- 759.0 mb Conv cond level (CCL): 624.43 mb = 4113.55 m = 13495.74 ft Mean mixing ratio: 5.64 g/kg Conv temperature: 39.30 C = 102.73 F Cap Strength: 10.17 C Lifted Index: 10.29 C Risk: None Lifted Index @300 mb: 13.83 C Lifted Index @700 mb: 6.62 C Showalter Index: 2.23 C Risk: Showers probable Total Totals Index: 45.20 C Risk: Scattered moderate thunderstorms Vertical Totals Index: 24.10 C Cross Totals Index: 21.10 C K Index: 26.30 Risk: 40-60 % chance of thunderstorms Sweat Index: 190.40 Risk: None Energy Index: -0.38 Risk: Scattered severe thunderstorms Parcel Indices Parcel: using 100 mb layer CAPE (B+): 0.61 J/kg Max Up Vert Vel: 1.11 m/s Conv Inhibition (B-): 71801.20 J/kg Cap Strength: 9.85 C Lift Cond Lev (LCL): 797.35 mb = 2124.05 m = 6968.57 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 311 at 20 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 1014 98 45 5 -3.5 -3.5 | 117 21 -19.0 9.6 1 1000 212 50 9 -6.9 -5.8 | 108 24 -22.3 7.4 2 989 305 60 7 -6.1 -3.5 | 114 24 -21.5 9.7 3 954 610 70 5 -4.7 -1.7 | 120 23 -20.1 11.5 4 925 877 90 7 -7.0 0.0 | 120 26 -22.4 13.2 5 921 914 95 6 -6.0 0.5 | 123 25 -21.4 13.7 6 888 1219 250 11 10.3 3.8 | 163 18 -5.1 16.9 7 857 1524 235 15 12.3 8.6 | 172 22 -3.1 21.8 8 850 1590 250 14 13.2 4.8 | 173 18 -2.3 18.0 9 826 1829 280 20 19.7 -3.5 | 204 11 4.3 9.7 10 796 2134 285 24 23.2 -6.2 | 228 10 7.8 7.0 11 767 2438 300 22 19.1 -11.0 | 239 4 3.6 2.2 12 739 2743 310 25 19.2 -16.1 | 308 5 3.7 -2.9 13 700 3194 275 27 26.9 -2.4 | 227 16 11.5 10.8 14 686 3353 275 26 25.9 -2.3 | 224 15 10.5 10.9 15 660 3658 280 38 37.4 -6.6 | 253 23 22.0 6.6 16 635 3962 295 31 28.1 -13.1 | 270 13 12.7 0.1 17 611 4267 290 33 31.0 -11.3 | 263 16 15.6 1.9 18 565 4877 275 35 34.9 -3.1 | 243 22 19.5 10.1 19 544 5182 270 40 40.0 -0.0 | 242 28 24.6 13.2 20 500 5840 275 52 51.8 -4.5 | 257 37 36.4 8.6 21 483 6096 270 53 53.0 -0.0 | 251 40 37.6 13.2 22 428 7010 290 36 33.8 -12.3 | 267 18 18.4 0.9 23 400 7510 295 42 38.1 -17.7 | 281 23 22.6 -4.6 24 394 7620 295 41 37.2 -17.3 | 281 22 21.7 -4.2 25 318 9144 290 57 53.6 -19.5 | 279 39 38.1 -6.3 26 300 9550 290 61 57.3 -20.9 | 280 43 41.9 -7.7 27 250 10770 285 68 65.7 -17.6 | 275 50 50.3 -4.4 28 219 11620 275 79 78.7 -6.9 | 264 64 63.3 6.3 29 210 11887 275 79 78.7 -6.9 | 264 64 63.3 6.3 30 200 12190 285 64 61.8 -16.6 | 274 47 46.4 -3.4 31 150 13920 275 46 45.8 -4.0 | 253 32 30.4 9.2 32 148 14021 285 48 46.4 -12.4 | 269 31 30.9 0.7 33 133 14630 255 68 65.7 17.6 | 239 59 50.3 30.8 34 127 14935 265 74 73.7 6.4 | 251 62 58.3 19.6 35 121 15240 285 63 60.9 -16.3 | 274 46 45.4 -3.1 36 115 15545 290 56 52.6 -19.2 | 279 38 37.2 -6.0 37 104 16154 305 30 24.6 -17.2 | 294 10 9.2 -4.0 38 100 16390 275 30 29.9 -2.6 | 234 18 14.5 10.6 39 99 16459 290 21 19.7 -7.2 | 216 7 4.3 6.0 40 94 16764 275 30 29.9 -2.6 | 234 18 14.5 10.6 41 77 17983 250 43 40.4 14.7 | 222 37 25.0 27.9 42 73 18288 280 41 40.4 -7.1 | 256 26 25.0 6.1 43 70 18550 320 27 17.4 -20.7 | 346 8 1.9 -7.5 44 70 18593 305 40 32.8 -22.9 | 299 20 17.3 -9.8 45 66 18898 320 25 16.1 -19.2 | 354 6 0.7 -6.0 46 63 19202 255 24 23.2 6.2 | 202 21 7.8 19.4 47 60 19507 280 24 23.6 -4.2 | 222 12 8.2 9.0 48 57 19812 310 10 7.7 -6.4 | 131 10 -7.8 6.7 49 54 20117 280 5 4.9 -0.9 | 140 16 -10.5 12.3 50 52 20422 255 15 14.5 3.9 | 177 17 -0.9 17.1 51 50 20630 305 5 4.1 -2.9 | 132 15 -11.3 10.3 52 49 20726 280 10 9.8 -1.7 | 154 13 -5.6 11.4 53 47 21031 310 4 3.1 -2.6 | 131 16 -12.4 10.6 54 45 21336 270 9 9.0 -0.0 | 154 15 -6.4 13.2 55 39 22250 355 10 0.9 -10.0 | 102 15 -14.5 3.2 56 37 22555 60 13 -11.3 -6.5 | 104 27 -26.7 6.7 57 35 22860 85 10 -10.0 -0.9 | 116 28 -25.4 12.3 58 32 23470 75 10 -9.7 -2.6 | 113 27 -25.1 10.6 59 30 23774 120 11 -9.5 5.5 | 127 31 -24.9 18.7 60 30 23850 125 5 -4.1 2.9 | 129 25 -19.5 16.0 61 28 24384 100 3 -3.0 0.5 | 127 23 -18.4 13.7 62 26 24689 155 10 -4.2 9.1 | 139 30 -19.6 22.2 63 23 25603 295 2 1.8 -0.8 | 132 18 -13.6 12.3 64 20 26460 345 14 3.6 -13.5 | 88 12 -11.8 -0.4 65 20 26518 25 11 -4.6 -10.0 | 99 20 -20.1 3.2 66 19 26822 345 14 3.6 -13.5 | 88 12 -11.8 -0.4 67 18 27127 20 10 -3.4 -9.4 | 101 19 -18.8 3.8 68 17 27432 50 6 -4.6 -3.9 | 115 22 -20.0 9.3 69 16 27737 15 19 -4.9 -18.4 | 76 21 -20.3 -5.2 70 16 28042 20 10 -3.4 -9.4 | 101 19 -18.8 3.8 71 15 28346 0 0 -0.0 -0.0 | 131 20 -15.4 13.2 72 14 28956 335 10 4.2 -9.1 | 110 12 -11.2 4.1 73 12 29870 275 2 2.0 -0.2 | 134 19 -13.4 13.0 74 11 30175 295 12 10.9 -5.1 | 151 9 -4.5 8.1 75 10 31020 5 24 -2.1 -23.9 | 58 21 -17.5 -10.7 76 7 33440 200 10 3.4 9.4 | 152 26 -12.0 22.6 Wind Parameters Mean winds (0-6000m): 280.5 at 27.0 knts Storm direction: 310.5 at 20.3 knts Shear (0-3000m) pos: 4.3 neg: 1.8 tot: 6.0 10-3/s Storm rel Dir Shear (0-3000m): 117.8 deg Storm rel helicity (0-3000m) pos: 218.6 neg: -34.9 tot: 183.6 m^2/s^2 ave: 61.2 10^-3 m/s^2 rel: 0.42 Storm rel vorticity (0-3000m) horiz: 13.4 stream: 5.7 10^-3/s Energy-Hel index: 0.00 Bulk Rich Number: 0.00 Bulk Shear: 137.42 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 58 7 115 23| 2.2 0.0 2.2| 25.9 -17.5 8.4 16.7 0.15| 8.0 1.2 1000 78 7 118 25| 6.9 0.0 6.9|116.9 -17.5 99.4 99.4 0.61| 12.0 7.3 1500 203 9 150 24| 6.5 0.0 6.5|171.3 -17.5 153.8 102.5 0.58| 14.1 8.2 2000 271 11 163 14| 6.8 0.0 6.8|210.1 -17.5 192.6 96.3 0.64| 14.2 9.1 2500 284 14 168 10| 5.1 0.0 5.1|216.9 -17.5 199.4 79.7 0.62| 13.2 8.2 3000 289 16 176 8| 4.3 1.8 6.0|218.6 -34.9 183.6 61.2 0.42| 13.4 5.7 4000 286 20 205 8| 3.1 2.3 5.4|285.8 -46.4 239.4 59.8 0.42| 13.5 5.7 5000 284 23 222 10| 2.5 3.3 5.7|285.8 -84.0 201.7 40.3 0.30| 12.3 3.7 6000 281 27 234 14| 2.7 3.2 6.0|351.2-119.4 231.7 38.6 0.29| 11.8 3.5 Wrote GIF file: /home/apache/climate/data/raob//KIAD/skewt/KIAD.skewt.20250421.00.gif