UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025041712.upa.cvt Date: 1200Z 17 APR 25 Searching for KIAD... Searching the city database file for: KIAD ... Date:1200Z 17 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 1013 98 1.6 -4.4 64 6.0 -0.6 255 3 273.7 274.2 271.8 281.2 2.72 1 1010 120 5.0 -5.0 48 10.0 1.2 268 4 277.4 277.8 273.8 284.6 2.60 2 1009 127 5.0 -5.0 48 10.0 1.2 272 5 277.4 277.9 273.9 284.7 2.61 3 1002 178 5.4 -5.6 45 11.0 1.2 301 8 278.4 278.8 274.3 285.4 2.51 4 1000 193 5.4 -5.6 45 11.0 1.2 310 9 278.5 279.0 274.3 285.6 2.51 5 982 341 4.6 -6.4 45 11.0 0.5 313 13 279.2 279.6 274.6 286.0 2.41 6 942 678 2.2 -8.8 44 11.0 -1.6 338 18 280.1 280.5 274.6 286.1 2.08 7 925 825 1.0 -9.0 47 10.0 -2.4 345 20 280.3 280.7 274.7 286.3 2.09 8 915 912 0.8 -11.2 40 12.0 -3.1 350 24 281.0 281.3 274.6 286.1 1.77 9 909 965 1.2 -14.8 29 16.0 -3.6 346 23 281.9 282.2 274.5 285.9 1.33 10 906 992 1.0 -16.0 27 17.0 -4.0 344 23 282.0 282.2 274.3 285.6 1.21 11 890 1135 0.2 -17.8 24 18.0 -4.8 332 20 282.6 282.8 274.4 285.8 1.06 12 854 1465 -0.9 -16.9 29 16.0 -5.5 308 23 284.8 285.0 275.8 288.4 1.19 13 850 1502 -1.1 -17.1 28 16.0 -5.7 305 24 285.0 285.2 275.9 288.5 1.18 14 826 1730 -2.3 -19.3 26 17.0 -6.8 308 24 286.1 286.2 276.2 289.1 1.00 15 799 1992 -3.5 -30.5 10 27.0 -8.9 313 25 287.5 287.6 276.0 288.7 0.38 16 797 2012 -3.1 -39.1 4 36.0 -9.1 313 25 288.2 288.2 276.0 288.7 0.16 17 780 2183 -2.9 -47.9 2 45.0 -9.2 315 27 290.2 290.2 276.9 290.4 0.06 18 708 2947 -4.5 -37.5 6 33.0 -10.4 315 34 296.5 296.6 280.1 297.3 0.21 19 700 3036 -5.1 -37.1 6 32.0 -10.8 315 35 296.8 296.9 280.3 297.6 0.23 20 669 3390 -7.3 -38.3 6 31.0 -12.5 315 38 298.2 298.3 280.9 299.0 0.21 21 655 3555 -6.9 -46.9 2 40.0 -12.6 315 40 300.5 300.5 281.7 300.8 0.09 22 625 3919 -9.1 -42.1 5 33.0 -14.1 311 39 302.0 302.1 282.4 302.6 0.15 23 525 5239 -19.7 -44.7 9 25.0 -22.5 320 42 304.7 304.8 283.5 305.2 0.14 24 508 5483 -21.1 -47.1 8 26.0 -23.7 317 43 305.9 305.9 283.9 306.3 0.11 25 500 5600 -21.5 -46.5 9 25.0 -24.1 315 44 306.8 306.8 284.3 307.3 0.12 26 468 6085 -24.9 -47.9 10 23.0 -27.0 315 48 308.5 308.5 284.9 308.9 0.11 27 455 6290 -26.1 -45.1 15 19.0 -27.9 314 49 309.5 309.5 285.3 310.0 0.15 28 430 6697 -29.5 -43.5 25 14.0 -30.8 312 51 310.2 310.2 285.6 310.9 0.19 29 400 7210 -33.7 -46.7 26 13.0 -34.6 310 54 311.2 311.2 285.9 311.7 0.14 30 399 7227 -33.9 -46.9 26 13.0 -34.8 310 54 311.2 311.2 285.9 311.7 0.14 31 392 7351 -34.9 -47.9 25 13.0 -35.8 310 55 311.4 311.4 286.0 311.9 0.13 32 380 7566 -36.1 -53.1 16 17.0 -37.0 310 57 312.6 312.6 286.4 312.9 0.07 33 360 7938 -38.5 -52.5 22 14.0 -39.2 310 61 314.3 314.3 286.9 314.6 0.08 34 350 8130 -40.1 -52.1 27 12.0 -40.7 310 63 314.7 314.7 287.1 315.0 0.09 35 327 8589 -43.7 -54.7 29 11.0 -44.1 310 67 315.9 315.9 287.5 316.2 0.07 36 300 9160 -48.3 -62.3 18 14.0 -48.6 305 74 317.3 317.3 287.9 317.4 0.03 37 297 9226 -48.7 -62.7 18 14.0 -49.0 305 74 317.6 317.6 288.0 317.7 0.03 38 284 9519 -51.3 -62.3 26 11.0 -51.5 307 76 318.0 318.0 288.1 318.1 0.03 39 269 9871 -53.3 -66.3 19 13.0 -53.5 308 77 320.0 320.1 288.8 320.1 0.02 40 250 10340 -56.5 -66.5 27 10.0 -56.6 310 79 322.1 322.1 289.4 322.1 0.02 41 247 10416 -56.9 -65.9 31 9.0 -57.1 308 79 322.6 322.6 289.6 322.7 0.02 42 244 10493 -57.3 -66.3 31 9.0 -57.4 305 79 323.1 323.1 289.8 323.2 0.02 43 237 10676 -57.3 -70.3 18 13.0 -57.5 305 80 325.8 325.8 290.5 325.9 0.01 44 234 10756 -57.3 -68.3 23 11.0 -57.5 305 80 327.0 327.0 290.9 327.1 0.02 45 226 10975 -58.1 -71.1 17 13.0 -58.2 305 81 329.1 329.1 291.5 329.1 0.01 46 223 11059 -56.7 -72.7 12 16.0 -56.9 305 81 332.5 332.5 292.4 332.5 0.01 47 212 11379 -55.9 -73.9 9 18.0 -56.1 305 83 338.6 338.6 294.0 338.6 0.01 48 210 11439 -56.1 -75.1 8 19.0 -56.3 305 83 339.2 339.2 294.1 339.2 0.01 49 206 11561 -54.3 -73.3 8 19.0 -54.6 305 84 343.9 343.9 295.3 343.9 0.01 50 203 11655 -54.4 -74.4 7 20.0 -54.7 305 84 345.1 345.1 295.6 345.2 0.01 51 200 11750 -54.5 -75.5 6 21.0 -54.8 310 81 346.5 346.5 295.8 346.5 0.01 52 197 11847 -54.3 -77.3 4 23.0 -54.6 306 83 348.3 348.3 296.3 348.3 0.01 53 172 12724 -51.9 -82.9 1 31.0 -52.4 304 71 366.0 366.0 299.8 366.0 0.00 54 156 13357 -52.5 -83.5 1 31.0 -52.9 298 68 375.4 375.4 301.5 375.4 0.00 55 150 13610 -54.1 -84.1 1 30.0 -54.5 295 67 376.9 376.9 301.8 376.9 0.00 56 148 13696 -54.5 -84.5 1 30.0 -54.9 291 62 377.6 377.6 301.9 377.6 0.00 57 132 14429 -53.3 -85.3 1 32.0 -53.8 302 52 392.3 392.3 304.1 392.3 0.00 58 101 16128 -59.1 -88.1 1 29.0 -59.5 286 41 412.4 412.4 306.8 412.4 0.00 59 100 16190 -58.1 -88.1 1 30.0 -58.5 285 41 415.5 415.5 307.2 415.5 0.00 60 98 16318 -57.3 -87.3 1 30.0 -57.7 285 41 419.4 419.4 307.6 419.4 0.00 61 89 16924 -60.5 -88.5 1 28.0 -60.8 272 36 424.8 424.8 308.3 424.8 0.00 62 78 17745 -61.7 -88.7 2 27.0 -62.0 283 44 438.6 438.6 309.7 438.6 0.00 63 70 18420 -59.7 -87.7 1 28.0 -60.2 305 32 456.7 456.7 311.5 456.7 0.00 64 64 18984 -57.3 -87.3 1 30.0 -57.9 305 26 473.8 473.8 313.0 473.8 0.00 65 59 19496 -59.1 -88.1 1 29.0 -59.6 266 22 480.9 480.9 313.5 480.9 0.00 66 55 19937 -58.3 -88.3 1 30.0 -58.9 291 20 492.5 492.5 314.4 492.5 0.00 67 54 20053 -56.1 -87.1 1 31.0 -56.9 310 21 500.1 500.1 314.9 500.2 0.00 68 50 20540 -58.1 -88.1 1 30.0 -58.8 220 5 506.6 506.6 315.4 506.6 0.00 69 48 20796 -59.1 -88.1 1 29.0 -59.7 348 10 510.1 510.1 315.7 510.1 0.00 70 45 21201 -56.5 -87.5 1 31.0 -57.5 338 8 525.9 525.9 316.6 526.0 0.00 71 43 21488 -57.9 -87.9 1 30.0 -58.7 348 4 529.4 529.4 316.9 529.4 0.00 72 38 22264 -57.9 -87.9 1 30.0 -58.9 223 11 548.4 548.4 318.0 548.5 0.00 73 36 22606 -55.7 -87.7 1 32.0 -57.0 248 13 562.7 562.7 318.8 562.7 0.00 74 30 23760 -57.3 -88.3 1 31.0 -58.5 355 4 588.4 588.4 320.0 588.5 0.01 75 28 24195 -58.7 -88.7 1 30.0 -59.8 64 3 596.3 596.3 320.5 596.3 0.01 76 25 24913 -55.5 -87.5 1 32.0 -57.3 67 10 625.1 625.1 321.7 625.1 0.01 77 22 25729 -55.7 -87.7 1 32.0 -57.6 71 12 647.8 647.8 322.6 647.8 0.01 78 20 26340 -53.1 -87.1 1 34.0 -55.8 65 6 673.6 673.6 323.6 673.7 0.01 79 17 27395 -51.9 -85.9 1 34.0 -55.2 61 11 709.5 709.5 324.7 709.6 0.01 80 15 28210 -51.5 -86.5 1 35.0 -55.2 94 10 736.7 736.7 325.6 736.8 0.01 81 12 29680 -46.3 -84.3 1 38.0 -52.7 116 6 803.7 803.7 327.3 803.9 0.03 82 10 30900 -44.3 -83.3 1 39.0 -52.4 190 7 854.2 854.2 328.5 854.5 0.04 83 10 30900 -44.3 -83.3 1 39.0 -52.4 190 7 854.2 854.2 328.5 854.5 0.04 84 8.0 32400 -42.9 -82.9 0 40.0 -52.7 916.0 916.1 329.7 916.6 0.05 TRP 244 10493 -57.3 -66.3 31 9.0 -57.4 305 79 323.1 323.1 289.8 323.2 0.02 WND 203 11655 -54.4 -74.4 7 20.0 -54.7 305 84 345.1 345.1 295.6 345.2 0.01 Sounding variables and indices 1000-500 mb thick: 5407.00 m Freezing level: 883.45 mb = 1194.57 m = 3919.15 ft Wetbulb zero: Below ground Precipitable water: 0.17 inches Sfc-500 mean rel hum: 15.06 % Est. max temperature: 12.16 C = 53.89 F Sfc-Lift cond lev (LCL): 922.69 mb = 845.04 m = 2772.40 ft T: 0.95 C 700-500 lapse rate: 6.40 C/km ThetaE index: 0.73 C Layer 915.0- 890.0 mb Conv cond level (CCL): 576.86 mb = 4525.84 m = 14848.38 ft Mean mixing ratio: 2.25 g/kg Conv temperature: 31.31 C = 88.36 F Cap Strength: 17.26 C Lifted Index: 17.86 C Risk: None Lifted Index @300 mb: 22.29 C Lifted Index @700 mb: 13.34 C Showalter Index: 15.80 C Risk: None Total Totals Index: 24.80 C Risk: None Vertical Totals Index: 20.40 C Cross Totals Index: 4.40 C K Index: -28.70 Risk: None Sweat Index: 92.00 Risk: None Energy Index: 4.03 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 10.02 J/kg Max Up Vert Vel: 4.48 m/s Conv Inhibition (B-): 66843.95 J/kg Cap Strength: 17.61 C Lift Cond Lev (LCL): 813.35 mb = 1851.64 m = 6074.84 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 347 at 25 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 1013 98 255 3 2.9 0.8 | 174 25 -2.5 24.7 1 1000 193 310 9 6.9 -5.8 | 185 18 1.5 18.1 2 986 305 310 12 9.2 -7.7 | 193 17 3.8 16.2 3 950 610 335 17 7.2 -15.4 | 192 9 1.8 8.5 4 925 825 345 20 5.2 -19.3 | 177 5 -0.2 4.6 5 915 914 350 24 4.2 -23.6 | 104 1 -1.2 0.3 6 881 1219 325 19 10.9 -15.6 | 213 10 5.5 8.4 7 850 1502 305 24 19.7 -13.8 | 235 18 14.3 10.2 8 816 1829 310 24 18.4 -15.4 | 237 16 13.0 8.5 9 785 2134 315 26 18.4 -18.4 | 247 14 13.0 5.6 10 755 2438 315 31 21.9 -21.9 | 263 17 16.5 2.0 11 726 2743 315 33 23.3 -23.3 | 268 18 17.9 0.6 12 700 3036 315 35 24.7 -24.7 | 272 19 19.4 -0.8 13 645 3658 315 41 29.0 -29.0 | 282 24 23.6 -5.1 14 620 3962 310 38 29.1 -24.4 | 271 24 23.7 -0.5 15 596 4267 315 42 29.7 -29.7 | 283 25 24.3 -5.8 16 550 4877 325 40 22.9 -32.8 | 297 20 17.6 -8.8 17 500 5600 315 44 31.1 -31.1 | 286 27 25.7 -7.2 18 467 6096 315 48 33.9 -33.9 | 289 30 28.6 -10.0 19 400 7210 310 54 41.4 -34.7 | 287 38 36.0 -10.8 20 377 7620 310 58 44.4 -37.3 | 289 41 39.0 -13.3 21 301 9144 310 72 55.2 -46.3 | 294 55 49.8 -22.3 22 300 9160 305 74 60.6 -42.4 | 289 58 55.2 -18.5 23 250 10340 310 79 60.5 -50.8 | 296 61 55.1 -26.8 24 244 10493 305 79 64.7 -45.3 | 290 63 59.3 -21.4 25 203 11655 305 84 68.8 -48.2 | 291 68 63.4 -24.2 26 200 11750 310 81 62.0 -52.1 | 296 63 56.7 -28.1 27 196 11887 305 84 68.8 -48.2 | 291 68 63.4 -24.2 28 187 12192 310 73 55.9 -46.9 | 294 56 50.5 -23.0 29 150 13610 295 67 60.7 -28.3 | 275 56 55.3 -4.4 30 148 13716 290 61 57.3 -20.9 | 267 52 51.9 3.1 31 128 14630 305 50 41.0 -28.7 | 278 36 35.6 -4.7 32 116 15240 290 44 41.3 -15.0 | 256 37 36.0 8.9 33 111 15545 280 48 47.3 -8.3 | 250 45 41.9 15.6 34 105 15850 295 45 40.8 -19.0 | 262 36 35.4 4.9 35 101 16154 285 41 39.6 -10.6 | 249 37 34.2 13.3 36 100 16190 285 41 39.6 -10.6 | 249 37 34.2 13.3 37 96 16459 285 41 39.6 -10.6 | 249 37 34.2 13.3 38 91 16764 270 34 34.0 -0.0 | 230 37 28.6 23.9 39 71 18288 290 49 46.0 -16.8 | 260 41 40.7 7.2 40 70 18420 305 32 26.2 -18.4 | 255 22 20.8 5.6 41 65 18898 305 26 21.3 -14.9 | 240 18 15.9 9.0 42 62 19202 305 25 20.5 -14.3 | 238 18 15.1 9.6 43 59 19507 265 22 21.9 1.9 | 213 31 16.5 25.9 44 56 19812 270 20 20.0 -0.0 | 211 28 14.6 23.9 45 53 20117 320 21 13.5 -16.1 | 226 11 8.1 7.8 46 51 20422 350 14 2.4 -13.8 | 164 11 -3.0 10.1 47 50 20540 220 5 3.2 3.8 | 176 28 -2.2 27.8 48 49 20726 350 10 1.7 -9.8 | 165 15 -3.7 14.1 49 44 21336 335 8 3.4 -7.3 | 173 17 -2.0 16.7 50 42 21641 0 0 -0.0 -0.0 | 167 25 -5.4 23.9 51 40 21946 210 10 5.0 8.7 | 179 33 -0.4 32.6 52 36 22555 235 12 9.8 6.9 | 188 31 4.4 30.8 53 35 22860 305 15 12.3 -8.6 | 204 17 6.9 15.3 54 33 23165 360 15 -0.0 -15.0 | 149 10 -5.4 8.9 55 31 23470 25 12 -5.1 -10.9 | 141 17 -10.5 13.1 56 30 23760 355 4 0.3 -4.0 | 166 21 -5.0 20.0 57 29 24079 50 1 -0.8 -0.6 | 165 24 -6.2 23.3 58 27 24384 85 7 -7.0 -0.6 | 152 26 -12.4 23.3 59 22 25603 45 13 -9.2 -9.2 | 135 21 -14.6 14.7 60 21 25908 105 10 -9.7 2.6 | 150 30 -15.0 26.5 61 20 26340 65 6 -5.4 -2.5 | 153 24 -10.8 21.4 62 19 26518 105 1 -1.0 0.3 | 165 25 -6.4 24.2 63 17 27432 60 11 -9.5 -5.5 | 141 24 -14.9 18.4 64 15 28042 75 10 -9.7 -2.6 | 145 26 -15.0 21.3 65 15 28346 105 10 -9.7 2.6 | 150 30 -15.0 26.5 66 13 28956 205 1 0.4 0.9 | 169 25 -5.0 24.8 67 11 30175 60 10 -8.7 -5.0 | 143 24 -14.0 18.9 68 10 30900 190 7 1.2 6.9 | 172 31 -4.2 30.8 Wind Parameters Mean winds (0-6000m): 317.3 at 32.7 knts Storm direction: 347.3 at 24.5 knts Shear (0-3000m) pos: 5.1 neg: 2.2 tot: 7.3 10-3/s Storm rel Dir Shear (0-3000m): 99.3 deg Storm rel helicity (0-3000m) pos: 98.6 neg: -5.4 tot: 93.2 m^2/s^2 ave: 31.1 10^-3 m/s^2 rel: 0.35 Storm rel vorticity (0-3000m) horiz: 10.3 stream: 3.6 10^-3/s Energy-Hel index: 0.00 Bulk Rich Number: 0.17 Bulk Shear: 57.77 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 ------------------------------------------------------------------------------- 500 319 12 189 15| 17.0 0.0 17.0| 35.9 -1.4 34.5 69.0 0.36| 18.9 6.8 1000 334 16 190 10| 10.6 0.0 10.6| 37.4 -5.0 32.4 32.4 0.18| 17.0 3.0 1500 327 18 207 10| 7.1 3.9 11.0| 53.0 -5.4 47.6 31.7 0.22| 15.8 3.5 2000 322 20 218 11| 6.2 2.9 9.1| 64.0 -5.4 58.6 29.3 0.26| 12.9 3.4 2500 320 22 229 11| 6.1 2.4 8.5| 86.3 -5.4 80.8 32.3 0.33| 11.6 3.8 3000 319 24 239 12| 5.1 2.2 7.3| 98.6 -5.4 93.2 31.1 0.35| 10.3 3.6 4000 317 28 254 14| 3.8 2.2 6.0|126.0 -28.4 97.6 24.4 0.31| 9.1 2.8 5000 318 30 264 15| 3.5 1.8 5.3|174.5 -35.0 139.5 27.9 0.35| 8.5 3.0 6000 317 33 270 17| 2.9 2.2 5.2|188.3 -55.1 133.2 22.2 0.30| 7.9 2.3 Wrote GIF file: /home/apache/climate/data/raob//KIAD/skewt/KIAD.skewt.20250417.12.gif