UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025041600.upa.cvt Date: 0000Z 16 APR 25 Searching for KIAD... Searching the city database file for: KIAD ... Date:0000Z 16 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 ------------------------------------------------------------------------------- 0 1000 57 280 14 SFC 996 98 13.6 -1.4 35 15.0 6.7 280 14 287.1 287.7 280.0 297.0 3.46 2 927 688 7.8 -4.2 42 12.0 2.7 289 26 287.1 287.6 279.5 295.8 3.02 3 925 706 7.6 -3.4 46 11.0 2.9 290 27 287.1 287.6 279.7 296.4 3.21 4 850 1394 0.8 -5.2 64 6.0 -1.6 285 35 287.0 287.5 279.4 295.8 3.05 5 796 1917 -4.1 -6.6 83 2.5 -5.0 290 36 287.2 287.7 279.4 295.7 2.93 6 739 2498 -8.9 -8.9 100 0.0 -8.9 295 42 288.1 288.6 279.5 295.8 2.64 7 704 2872 -11.1 -11.5 97 0.4 -11.2 302 44 289.7 290.1 279.7 296.4 2.25 8 700 2916 -11.7 -12.5 94 0.8 -11.9 305 45 289.5 289.9 279.4 295.7 2.09 9 698 2938 -11.7 -12.6 93 0.9 -12.0 305 45 289.8 290.1 279.5 296.0 2.08 10 696 2960 -11.9 -13.1 91 1.2 -12.3 305 45 289.8 290.1 279.4 295.8 2.00 11 689 3037 -11.5 -14.3 80 2.8 -12.3 304 46 291.1 291.4 279.8 296.6 1.83 12 662 3343 -12.7 -18.7 61 6.0 -14.2 300 50 293.1 293.3 280.1 297.1 1.32 13 592 4186 -17.9 -21.2 75 3.3 -18.6 301 48 296.5 296.8 281.4 300.3 1.19 14 584 4288 -16.9 -21.9 65 5.0 -18.0 300 48 298.9 299.1 282.4 302.5 1.13 15 570 4470 -17.9 -22.7 66 4.8 -19.0 300 48 299.8 300.0 282.7 303.2 1.08 16 556 4656 -18.7 -24.7 59 6.0 -19.9 300 47 301.0 301.1 283.0 304.0 0.93 17 549 4750 -19.1 -28.1 45 9.0 -20.7 300 47 301.6 301.7 283.0 303.9 0.69 18 543 4832 -19.3 -29.3 41 10.0 -21.1 300 47 302.3 302.4 283.1 304.4 0.62 19 524 5096 -20.9 -30.9 40 10.0 -22.5 298 45 303.5 303.6 283.5 305.3 0.55 20 509 5309 -22.7 -29.7 53 7.0 -23.9 296 44 303.8 303.9 283.8 305.9 0.64 21 504 5382 -22.9 -34.9 33 12.0 -24.6 296 43 304.4 304.5 283.7 305.8 0.39 22 500 5440 -23.3 -36.3 29 13.0 -25.0 295 43 304.6 304.7 283.7 305.8 0.34 23 488 5617 -24.9 -34.9 39 10.0 -26.2 295 43 304.8 304.9 283.8 306.2 0.40 24 485 5662 -24.7 -40.7 21 16.0 -26.5 295 44 305.6 305.6 284.0 306.4 0.23 25 477 5783 -25.5 -37.5 32 12.0 -26.9 295 45 306.0 306.1 284.2 307.2 0.32 26 471 5874 -26.1 -39.1 28 13.0 -27.6 295 47 306.4 306.5 284.3 307.4 0.27 27 446 6265 -29.7 -44.7 22 15.0 -31.0 293 50 306.7 306.7 284.3 307.3 0.16 28 400 7030 -36.5 -47.5 31 11.0 -37.2 285 50 307.6 307.6 284.6 308.0 0.13 29 387 7258 -38.7 -49.7 30 11.0 -39.3 287 50 307.6 307.6 284.5 308.0 0.11 30 381 7365 -39.7 -48.7 38 9.0 -40.2 288 50 307.6 307.7 284.6 308.1 0.12 31 371 7547 -41.1 -50.1 37 9.0 -41.5 289 50 308.1 308.2 284.8 308.5 0.11 32 366 7639 -41.7 -52.7 29 11.0 -42.2 289 50 308.5 308.5 284.9 308.8 0.08 33 357 7807 -43.1 -53.1 32 10.0 -43.5 284 47 308.9 308.9 285.0 309.1 0.08 34 350 7941 -43.7 -56.7 22 13.0 -44.1 275 46 309.8 309.8 285.3 310.0 0.05 35 340 8136 -42.5 -63.5 8 21.0 -43.1 271 52 314.0 314.0 286.8 314.1 0.02 36 300 8980 -43.9 -70.9 3 27.0 -44.5 245 67 323.5 323.5 289.8 323.5 0.01 37 299 9002 -43.7 -71.7 3 28.0 -44.3 245 67 324.1 324.1 290.0 324.1 0.01 38 282 9391 -46.1 -75.1 2 29.0 -46.6 246 75 326.1 326.1 290.6 326.1 0.01 39 263 9854 -44.3 -75.3 2 31.0 -45.0 248 88 335.3 335.3 293.2 335.3 0.01 40 250 10190 -46.3 -76.3 2 30.0 -46.9 250 97 337.2 337.2 293.6 337.3 0.00 41 248 10244 -46.4 -76.4 2 30.0 -47.0 250 97 337.8 337.8 293.8 337.9 0.00 42 223 10952 -47.9 -77.9 2 30.0 -48.4 254 90 346.0 346.0 295.7 346.0 0.00 43 216 11164 -45.9 -78.9 1 33.0 -46.6 256 88 352.2 352.3 297.1 352.3 0.00 44 209 11385 -46.3 -79.3 1 33.0 -47.0 258 85 355.0 355.0 297.7 355.0 0.00 45 200 11680 -44.5 -78.5 1 34.0 -45.4 260 82 362.3 362.3 299.1 362.3 0.00 46 186 12165 -43.3 -78.3 1 35.0 -44.3 251 76 371.8 371.8 300.9 371.9 0.00 47 172 12683 -47.9 -80.9 1 33.0 -48.6 241 69 372.7 372.7 301.0 372.7 0.00 48 158 13240 -48.7 -81.7 1 33.0 -49.4 243 68 380.5 380.5 302.3 380.5 0.00 49 154 13408 -48.1 -81.1 1 33.0 -48.8 244 67 384.3 384.3 302.9 384.3 0.00 50 150 13580 -49.3 -81.3 1 32.0 -50.0 245 67 385.1 385.1 303.1 385.1 0.00 51 130 14510 -54.7 -84.7 1 30.0 -55.1 246 76 391.5 391.5 304.0 391.5 0.00 52 120 15025 -53.3 -84.3 1 31.0 -53.8 251 74 403.2 403.2 305.6 403.2 0.00 53 100 16190 -57.7 -85.7 2 28.0 -58.1 245 59 416.2 416.2 307.3 416.3 0.00 54 93 16643 -60.5 -87.5 2 27.0 -60.8 246 63 419.4 419.4 307.6 419.5 0.00 55 89 16917 -59.5 -86.5 2 27.0 -59.9 249 69 426.8 426.8 308.5 426.8 0.00 56 76 17894 -63.1 -88.1 2 25.0 -63.4 252 46 438.9 438.9 309.8 439.0 0.00 57 73 18141 -63.5 -88.5 2 25.0 -63.8 247 39 443.2 443.2 310.2 443.2 0.00 58 72 18225 -63.3 -89.3 2 26.0 -63.6 246 37 445.4 445.4 310.4 445.4 0.00 59 70 18400 -58.3 -87.3 1 29.0 -58.8 245 32 459.7 459.7 311.7 459.7 0.00 60 69 18491 -58.1 -87.1 1 29.0 -58.6 243 32 462.0 462.0 312.0 462.0 0.00 61 67 18678 -56.7 -86.7 1 30.0 -57.3 239 31 468.9 468.9 312.5 468.9 0.00 62 61 19271 -59.3 -87.3 1 28.0 -59.8 241 38 475.9 475.9 313.1 475.9 0.00 63 58 19591 -54.7 -85.7 1 31.0 -55.6 249 39 493.2 493.2 314.5 493.2 0.00 64 53 20167 -56.5 -86.5 1 30.0 -57.3 245 31 501.9 501.9 315.1 501.9 0.00 65 50 20540 -54.3 -85.3 1 31.0 -55.4 280 19 515.5 515.5 316.0 515.5 0.01 66 44 21352 -57.5 -86.5 1 29.0 -58.3 265 5 526.9 526.9 316.7 526.9 0.01 67 39 22113 -57.7 -86.7 1 29.0 -58.6 242 14 544.9 544.9 317.8 544.9 0.01 68 30 23770 -56.9 -87.9 1 31.0 -58.2 225 6 589.5 589.5 320.1 589.6 0.01 69 26 24677 -55.1 -86.1 1 31.0 -56.9 359 0 619.3 619.3 321.5 619.3 0.01 70 24 25187 -55.7 -86.7 1 31.0 -57.5 352 9 631.9 631.9 322.0 631.9 0.01 71 20 26350 -53.9 -85.9 1 32.0 -56.3 35 7 671.2 671.2 323.4 671.3 0.01 72 16 27795 -51.1 -85.1 1 34.0 -54.8 60 12 724.6 724.6 325.2 724.7 0.02 73 14 28672 -47.5 -83.5 1 36.0 -52.9 16 10 765.0 765.0 326.4 765.2 0.03 74 12 29694 -46.7 -82.7 1 36.0 -52.9 290 5 802.3 802.3 327.3 802.6 0.04 75 12 29694 -46.9 -82.9 1 36.0 -53.1 290 5 801.6 801.6 327.3 801.9 0.03 76 11 30276 -43.1 -82.1 1 39.0 -51.4 295 11 835.6 835.6 328.1 836.0 0.04 77 10 30920 -42.5 -81.5 1 39.0 -51.4 265 17 860.9 860.9 328.7 861.4 0.05 78 9.1 31554 -42.9 -81.9 1 39.0 -52.1 274 21 882.9 882.9 329.1 883.4 0.05 79 8.1 32346 -37.7 -79.7 0 42.0 -50.4 286 25 933.4 933.5 330.1 934.3 0.09 80 7.7 32693 -38.7 -80.7 0 42.0 -51.0 291 27 943.0 943.0 330.2 943.8 0.08 81 7.5 32874 -36.5 -79.5 0 43.0 -50.3 293 28 959.0 959.1 330.5 960.1 0.10 82 7.0 33350 -37.7 -79.7 0 42.0 -51.1 300 31 973.2 973.3 330.8 974.3 0.10 83 6.8 33550 -38.1 -80.1 0 42.0 -51.4 979.6 979.7 330.9 980.7 0.10 TRP 350 7941 -43.7 -56.7 22 13.0 -44.1 275 46 309.8 309.8 285.3 310.0 0.05 WND 248 10244 -46.4 -76.4 2 30.0 -47.0 250 97 337.8 337.8 293.8 337.9 0.00 Sounding variables and indices 1000-500 mb thick: 5383.00 m Freezing level: 841.18 mb = 1479.34 m = 4853.42 ft Wetbulb zero: 876.81 mb = 1141.38 m = 3744.63 ft Precipitable water: 0.45 inches Sfc-500 mean rel hum: 65.23 % Est. max temperature: 13.52 C = 56.34 F Sfc-Lift cond lev (LCL): 793.25 mb = 1943.74 m = 6377.01 ft T: -4.32 C 700-500 lapse rate: 4.60 C/km ThetaE index: 1.20 C Layer 927.0- 925.0 mb Conv cond level (CCL): 776.41 mb = 2111.63 m = 6927.83 ft Mean mixing ratio: 3.22 g/kg Conv temperature: 14.04 C = 57.27 F Cap Strength: 8.13 C Lifted Index: 8.20 C Risk: None Lifted Index @300 mb: 19.30 C Lifted Index @700 mb: -0.12 C Showalter Index: 8.61 C Risk: None Total Totals Index: 42.20 C Risk: None Vertical Totals Index: 24.10 C Cross Totals Index: 18.10 C K Index: 18.10 Risk: < 20 % chance of thunderstorms Sweat Index: 113.00 Risk: None Energy Index: 2.03 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 3.78 J/kg Max Up Vert Vel: 2.75 m/s Conv Inhibition (B-): 2.52 J/kg Cap Strength: 8.21 C Lift Cond Lev (LCL): 781.19 mb = 2063.59 m = 6770.22 ft Lev Free Conv (LFC): 756.19 mb = 2317.96 m = 7604.78 ft Equ Level (EL): 706.19 mb = 2848.29 m = 9344.66 ft B at Equ Level: 3.77 J/kg Max Parcel Lev (MPL): 686.19 mb = 3068.46 m = 10067.00 ft Wind level data Storm motion: 326 at 31 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 ---------------------------------------------------------- 0 996 98 280 14 13.8 -2.4 | 171 23 -3.6 23.1 1 971 305 280 22 21.7 -3.8 | 191 22 4.3 21.7 2 936 610 285 24 23.2 -6.2 | 197 20 5.8 19.3 3 925 706 290 27 25.4 -9.2 | 206 18 8.0 16.3 4 902 914 280 30 29.5 -5.2 | 211 24 12.2 20.3 5 868 1219 285 37 35.7 -9.6 | 229 24 18.3 15.9 6 850 1394 285 35 33.8 -9.1 | 225 23 16.4 16.5 7 804 1829 290 35 32.9 -12.0 | 229 21 15.5 13.5 8 773 2134 290 40 37.6 -13.7 | 240 23 20.2 11.8 9 744 2438 295 42 38.1 -17.7 | 249 22 20.7 7.8 10 716 2743 295 43 39.0 -18.2 | 251 23 21.6 7.3 11 700 2916 305 45 36.9 -25.8 | 271 19 19.5 -0.3 12 660 3353 300 50 43.3 -25.0 | 269 26 25.9 0.5 13 634 3658 305 50 41.0 -28.7 | 278 24 23.6 -3.2 14 585 4267 300 48 41.6 -24.0 | 266 24 24.2 1.5 15 539 4877 300 47 40.7 -23.5 | 265 23 23.3 2.0 16 500 5440 295 43 39.0 -18.2 | 251 23 21.6 7.3 17 497 5486 295 41 37.2 -17.3 | 247 21 19.8 8.2 18 456 6096 295 50 45.3 -21.1 | 261 28 27.9 4.4 19 400 7030 285 50 48.3 -12.9 | 248 33 30.9 12.6 20 367 7620 290 50 47.0 -17.1 | 254 31 29.6 8.4 21 351 7925 280 45 44.3 -7.8 | 237 32 26.9 17.7 22 350 7941 275 46 45.8 -4.0 | 233 36 28.4 21.5 23 306 8839 255 73 70.5 18.9 | 230 69 53.1 44.4 24 300 8980 245 67 60.7 28.3 | 219 69 43.3 53.8 25 293 9144 245 68 61.6 28.7 | 219 70 44.2 54.3 26 250 10190 250 97 91.2 33.2 | 231 94 73.8 58.7 27 248 10244 250 97 91.2 33.2 | 231 94 73.8 58.7 28 244 10363 250 97 91.2 33.2 | 231 94 73.8 58.7 29 200 11680 260 82 80.8 14.2 | 238 75 63.4 39.8 30 194 11887 260 82 80.8 14.2 | 238 75 63.4 39.8 31 177 12497 240 69 59.8 34.5 | 215 73 42.4 60.0 32 150 13580 245 67 60.7 28.3 | 219 69 43.3 53.8 33 147 13716 250 62 58.3 21.2 | 221 62 40.9 46.7 34 127 14630 245 78 70.7 33.0 | 222 79 53.3 58.5 35 116 15240 255 72 69.5 18.6 | 230 68 52.2 44.2 36 100 16190 245 59 53.5 24.9 | 216 62 36.1 50.5 37 96 16459 245 59 53.5 24.9 | 216 62 36.1 50.5 38 87 17069 250 73 68.6 25.0 | 225 72 51.2 50.5 39 83 17374 260 61 60.1 10.6 | 230 56 42.7 36.1 40 71 18288 245 35 31.7 14.8 | 200 43 14.3 40.3 41 70 18400 245 32 29.0 13.5 | 197 41 11.6 39.0 42 65 18898 235 31 25.4 17.8 | 190 44 8.0 43.3 43 59 19507 245 42 38.1 17.7 | 206 48 20.7 43.3 44 56 19812 260 30 29.5 5.2 | 202 33 12.2 30.7 45 51 20422 235 32 26.2 18.4 | 191 45 8.8 43.9 46 50 20540 280 19 18.7 -3.3 | 183 22 1.3 22.2 47 49 20726 275 29 28.9 -2.5 | 207 26 11.5 23.0 48 44 21336 265 5 5.0 0.4 | 154 29 -12.4 26.0 49 42 21641 265 10 10.0 0.9 | 164 27 -7.4 26.4 50 38 22250 235 15 12.3 8.6 | 171 35 -5.1 34.1 51 30 23770 225 6 4.2 4.2 | 156 33 -13.1 29.8 52 27 24384 340 2 0.7 -1.9 | 145 29 -16.7 23.6 53 26 24689 0 0 -0.0 -0.0 | 146 31 -17.4 25.5 54 21 25908 340 21 7.2 -19.7 | 120 12 -10.2 5.8 55 20 26350 35 7 -4.0 -5.7 | 133 29 -21.4 19.8 56 19 26518 15 18 -4.7 -17.4 | 110 24 -22.1 8.1 57 19 26822 15 10 -2.6 -9.7 | 128 26 -20.0 15.9 58 17 27432 30 12 -6.0 -10.4 | 123 28 -23.4 15.1 59 16 27737 50 10 -7.7 -6.4 | 127 31 -25.1 19.1 60 15 28042 85 18 -17.9 -1.6 | 124 43 -35.3 23.9 61 15 28346 115 10 -9.1 4.2 | 138 40 -26.5 29.7 62 13 28956 305 10 8.2 -5.7 | 155 22 -9.2 19.8 63 13 29261 320 10 6.4 -7.7 | 148 21 -11.0 17.9 64 12 29566 300 1 0.9 -0.5 | 147 30 -16.5 25.0 65 12 29870 280 10 9.8 -1.7 | 162 25 -7.5 23.8 66 11 30175 300 10 8.7 -5.0 | 157 22 -8.7 20.5 67 10 30920 265 17 16.9 1.5 | 179 27 -0.5 27.0 68 7 33350 300 31 26.8 -15.5 | 223 14 9.5 10.0 Wind Parameters Mean winds (0-6000m): 295.7 at 41.2 knts Storm direction: 325.7 at 30.9 knts Shear (0-3000m) pos: 4.6 neg: 1.8 tot: 6.3 10-3/s Storm rel Dir Shear (0-3000m): 99.1 deg Storm rel helicity (0-3000m) pos: 227.0 neg: -8.1 tot: 218.9 m^2/s^2 ave: 73.0 10^-3 m/s^2 rel: 0.75 Storm rel vorticity (0-3000m) horiz: 8.7 stream: 6.5 10^-3/s Energy-Hel index: 0.00 Bulk Rich Number: 0.06 Bulk Shear: 61.21 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 ------------------------------------------------------------------------------- 500 282 21 188 22| 10.3 0.0 10.3| 57.8 0.0 57.8 115.6 0.92| 11.0 10.1 1000 283 25 199 21| 5.2 5.3 10.5|111.7 0.0 111.7 111.7 0.80| 12.4 9.9 1500 284 29 209 21| 3.9 3.5 7.4|131.7 -7.2 124.5 83.0 0.72| 10.2 7.3 2000 286 31 215 21| 4.1 2.7 6.8|157.3 -7.2 150.0 75.0 0.73| 9.1 6.6 2500 288 33 221 21| 4.1 2.1 6.3|185.5 -7.2 178.2 71.3 0.75| 8.3 6.3 3000 290 35 228 20| 4.6 1.8 6.3|227.0 -8.1 218.9 73.0 0.75| 8.7 6.5 4000 294 39 242 20| 3.8 1.3 5.1|248.9 -30.3 218.6 54.7 0.62| 7.8 4.8 5000 296 40 247 21| 3.0 1.0 4.1|248.9 -55.6 193.3 38.7 0.51| 6.7 3.5 6000 296 41 249 21| 2.5 1.3 3.8|285.6 -83.5 202.1 33.7 0.44| 6.8 3.0 Wrote GIF file: /home/apache/climate/data/raob//KIAD/skewt/KIAD.skewt.20250416.00.gif