UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025042712.upa.cvt Date: 1200Z 27 APR 25 Searching for KOAK... Searching the city database file for: KOAK ... Date:1200Z 27 APR 25 Station: KOAK WMO ident: 72493 Latitude: 37.73 Longitude: -122.22 Elevation: 3.00 ------------------------------------------------------------------------------- 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 3 11.0 8.6 85 2.4 9.7 250 3 283.0 284.2 282.2 302.1 6.92 1 1000 121 10.2 8.1 87 2.1 9.0 245 5 283.4 284.5 282.2 302.1 6.78 2 975 331 8.2 7.7 97 0.5 7.9 258 7 283.4 284.6 282.2 302.1 6.77 3 967 399 8.0 6.6 91 1.4 7.3 254 7 283.9 285.0 281.9 301.4 6.33 4 952 528 6.6 6.6 100 0.0 6.6 245 6 283.7 284.8 282.0 301.5 6.43 5 925 764 5.0 5.0 100 0.0 5.0 230 4 284.4 285.4 281.7 300.9 5.91 6 883 1142 3.0 2.9 99 0.1 2.9 256 4 286.2 287.1 281.8 301.2 5.34 7 875 1216 3.2 2.0 92 1.2 2.6 269 5 287.1 288.0 282.0 301.4 5.05 8 850 1451 2.0 0.5 90 1.5 1.3 300 9 288.2 289.1 282.0 301.6 4.67 9 822 1721 1.4 -1.6 80 3.0 0.1 321 13 290.4 291.1 282.3 302.4 4.14 10 821 1731 1.6 -1.4 80 3.0 0.3 322 13 290.7 291.4 282.5 302.9 4.20 11 805 1890 1.0 -1.0 86 2.0 0.1 327 15 291.7 292.5 283.2 304.5 4.41 12 788 2061 0.8 -2.5 79 3.3 -0.7 319 16 293.3 294.0 283.4 305.1 4.04 13 761 2341 -0.7 -2.9 85 2.2 -1.7 335 18 294.6 295.3 284.0 306.6 4.06 14 750 2457 -1.1 -4.3 79 3.2 -2.5 345 18 295.4 296.0 284.0 306.4 3.70 15 743 2532 -0.7 -5.6 69 4.9 -2.7 344 18 296.6 297.2 284.1 306.8 3.39 16 700 3005 -4.7 -7.0 84 2.3 -5.6 340 21 297.3 297.9 284.2 307.0 3.23 17 674 3302 -7.5 -7.7 98 0.2 -7.6 348 23 297.4 298.0 284.2 307.0 3.18 18 629 3837 -11.1 -11.1 100 0.0 -11.1 346 30 299.2 299.7 284.2 307.2 2.60 19 626 3874 -9.9 -10.3 97 0.4 -10.1 348 31 301.0 301.5 285.1 309.6 2.79 20 598 4226 -11.7 -12.7 92 1.0 -12.1 355 34 302.9 303.3 285.4 310.4 2.41 21 593 4290 -12.1 -12.8 95 0.7 -12.3 355 34 303.1 303.6 285.5 310.7 2.41 22 565 4660 -13.9 -17.3 75 3.4 -14.9 349 37 305.2 305.6 285.6 310.8 1.74 23 555 4795 -14.9 -17.5 81 2.6 -15.6 347 38 305.6 305.9 285.8 311.2 1.74 24 549 4878 -14.7 -19.3 68 4.6 -16.0 345 39 306.8 307.1 285.9 311.7 1.51 25 537 5045 -15.5 -21.5 60 6.0 -17.0 345 38 307.8 308.0 286.0 312.0 1.28 26 501 5565 -19.9 -24.3 68 4.4 -20.8 345 34 308.6 308.8 286.1 312.1 1.07 27 500 5580 -19.9 -24.2 69 4.3 -20.8 345 34 308.8 309.0 286.2 312.4 1.08 28 485 5805 -21.9 -24.5 79 2.6 -22.4 345 33 309.0 309.2 286.2 312.6 1.08 29 484 5820 -22.1 -24.6 80 2.5 -22.6 345 33 309.0 309.2 286.2 312.5 1.08 30 478 5911 -22.7 -26.1 74 3.4 -23.4 345 33 309.3 309.5 286.2 312.5 0.95 31 467 6082 -24.1 -26.6 80 2.5 -24.6 345 32 309.6 309.8 286.3 312.8 0.93 32 452 6319 -25.9 -30.2 67 4.3 -26.6 348 35 310.3 310.4 286.2 312.6 0.69 33 426 6744 -29.3 -32.2 76 2.9 -29.7 354 40 311.3 311.4 286.5 313.3 0.60 34 421 6828 -30.3 -33.6 73 3.3 -30.7 355 41 311.0 311.1 286.4 312.9 0.53 35 416 6913 -30.9 -33.1 81 2.2 -31.2 356 42 311.3 311.4 286.5 313.3 0.57 36 414 6947 -31.1 -34.4 73 3.3 -31.5 357 43 311.5 311.6 286.5 313.2 0.50 37 403 7137 -32.7 -34.2 86 1.5 -32.9 359 45 311.8 311.9 286.6 313.6 0.52 38 401 7172 -32.9 -34.7 84 1.8 -33.1 360 46 312.0 312.1 286.6 313.8 0.50 39 400 7190 -33.1 -35.1 82 2.0 -33.3 360 46 312.0 312.1 286.6 313.7 0.48 40 396 7261 -33.3 -37.9 63 4.6 -33.8 360 46 312.6 312.7 286.7 313.9 0.37 41 392 7332 -33.9 -37.4 71 3.5 -34.3 360 46 312.7 312.8 286.8 314.1 0.39 42 391 7350 -33.9 -38.9 61 5.0 -34.4 360 46 313.0 313.0 286.8 314.2 0.34 43 389 7386 -34.3 -38.3 67 4.0 -34.7 360 46 312.9 313.0 286.8 314.2 0.36 44 386 7440 -34.3 -41.3 49 7.0 -34.9 360 46 313.6 313.6 286.9 314.6 0.27 45 385 7458 -34.3 -42.3 44 8.0 -35.0 360 46 313.8 313.9 287.0 314.7 0.24 46 382 7513 -34.9 -41.9 49 7.0 -35.5 360 46 313.7 313.8 286.9 314.6 0.25 47 380 7550 -35.1 -45.1 35 10.0 -35.8 360 46 313.9 314.0 286.9 314.6 0.18 48 360 7924 -38.5 -46.5 43 8.0 -39.0 2 46 314.3 314.3 287.1 314.9 0.16 49 354 8040 -39.5 -50.5 30 11.0 -40.1 3 46 314.4 314.5 287.1 314.8 0.11 50 329 8537 -43.7 -53.7 32 10.0 -44.1 2 48 315.3 315.3 287.3 315.6 0.08 51 319 8744 -45.7 -53.7 40 8.0 -46.0 360 49 315.4 315.4 287.3 315.7 0.08 52 314 8849 -46.7 -51.7 57 5.0 -46.9 358 49 315.4 315.4 287.3 315.8 0.10 53 312 8891 -47.1 -50.5 68 3.4 -47.2 358 50 315.4 315.4 287.3 315.9 0.12 54 306 9020 -48.3 -51.6 69 3.3 -48.4 356 50 315.5 315.5 287.4 315.9 0.11 55 300 9150 -49.3 -52.7 67 3.4 -49.4 355 52 315.9 315.9 287.5 316.2 0.10 56 298 9194 -49.7 -52.9 69 3.2 -49.8 355 52 315.9 315.9 287.5 316.3 0.09 57 273 9762 -53.7 -58.7 54 5.0 -53.8 355 53 318.1 318.1 288.2 318.3 0.05 58 250 10330 -52.1 -70.1 10 18.0 -52.4 360 49 328.6 328.6 291.3 328.7 0.01 59 200 11780 -51.5 -79.5 2 28.0 -51.9 335 34 351.2 351.2 296.9 351.2 0.00 60 150 13640 -53.3 -82.3 2 29.0 -53.8 310 19 378.2 378.2 301.9 378.3 0.00 61 100 16230 -56.5 -85.5 1 29.0 -56.9 265 13 418.6 418.6 307.6 418.6 0.00 62 95 16556 -54.9 -84.9 1 30.0 -55.5 259 12 427.9 427.9 308.6 427.9 0.00 63 80 17645 -58.5 -86.5 2 28.0 -58.9 281 10 442.0 442.0 310.1 442.0 0.00 64 70 18490 -55.7 -85.7 1 30.0 -56.4 220 11 465.2 465.2 312.3 465.2 0.00 65 66 18865 -55.1 -85.1 1 30.0 -55.9 244 10 474.4 474.4 313.0 474.4 0.00 66 57 19793 -58.1 -87.1 1 29.0 -58.7 148 11 487.9 487.9 314.1 487.9 0.00 67 52 20372 -56.7 -86.7 1 30.0 -57.5 217 14 504.2 504.2 315.2 504.2 0.00 68 50 20620 -57.7 -86.7 1 29.0 -58.5 30 5 507.5 507.5 315.5 507.5 0.00 69 44 21426 -59.1 -87.1 1 28.0 -59.8 128 14 523.0 523.0 316.5 523.0 0.00 70 35 22873 -56.3 -86.3 1 30.0 -57.5 136 15 565.7 565.7 318.9 565.7 0.01 71 33 23246 -58.7 -87.7 1 29.0 -59.7 170 14 568.9 568.9 319.1 568.9 0.01 72 30 23850 -55.3 -86.3 1 31.0 -56.8 340 11 593.9 593.9 320.3 593.9 0.01 73 29 24066 -54.9 -85.9 1 31.0 -56.5 32 3 600.8 600.8 320.6 600.8 0.01 74 25 25008 -57.5 -87.5 1 30.0 -58.9 162 10 619.4 619.4 321.5 619.4 0.01 75 25 25008 -55.9 -86.9 1 31.0 -57.6 162 10 623.9 624.0 321.6 624.0 0.01 76 24 25267 -56.7 -86.7 1 30.0 -58.3 232 10 629.0 629.0 321.9 629.0 0.01 77 21 26117 -54.5 -86.5 1 32.0 -56.8 33 15 660.1 660.1 323.0 660.2 0.01 78 20 26430 -53.5 -86.5 1 33.0 -56.1 100 9 672.4 672.4 323.5 672.5 0.01 79 18 27110 -51.5 -85.5 1 34.0 -54.8 73 12 699.3 699.3 324.4 699.4 0.01 80 14 28748 -49.5 -83.5 1 34.0 -54.1 43 7 758.2 758.2 326.1 758.4 0.03 81 13 29234 -49.5 -83.5 1 34.0 -54.4 340 11 774.4 774.4 326.6 774.7 0.03 82 13 29234 -47.3 -83.3 1 36.0 -53.0 340 11 782.0 782.1 326.8 782.3 0.03 83 12 29763 -47.3 -83.3 1 36.0 -53.3 344 11 800.2 800.2 327.3 800.4 0.03 84 11 30342 -44.5 -81.5 1 37.0 -52.1 290 10 830.5 830.5 328.0 830.9 0.05 85 10 30980 -44.5 -81.5 1 37.0 -52.4 360 11 853.4 853.5 328.5 853.9 0.05 86 10 30980 -44.5 -81.5 1 37.0 -52.4 360 11 853.4 853.5 328.5 853.9 0.05 87 9.7 31184 -44.9 -81.9 1 37.0 -52.8 6 10 859.4 859.4 328.6 859.9 0.05 88 9.4 31395 -43.7 -81.7 1 38.0 -52.3 11 9 871.7 871.7 328.8 872.2 0.05 89 9.3 31467 -43.7 -81.7 1 38.0 -52.4 13 9 874.4 874.4 328.9 874.9 0.05 90 9.0 31687 -44.3 -81.3 1 37.0 -52.8 19 8 880.3 880.3 329.0 880.9 0.06 91 8.3 32233 -42.7 -80.7 1 38.0 -52.4 34 6 907.2 907.3 329.6 908.0 0.07 92 8.0 32484 -39.3 -79.3 1 40.0 -51.0 41 5 930.4 930.4 330.0 931.4 0.09 93 7.7 32745 -39.9 -79.9 1 40.0 -51.5 48 4 938.2 938.2 330.1 939.1 0.09 94 7.2 33206 -38.9 -79.9 1 41.0 -51.4 60 2 960.5 960.5 330.5 961.5 0.09 95 7.0 33400 -36.7 -78.7 0 42.0 -50.7 65 1 977.3 977.4 330.8 978.7 0.12 96 6.9 33500 -36.3 -78.3 1 42.0 -50.7 983.0 983.1 330.9 984.5 0.13 97 6.7 33703 -37.1 -78.1 1 41.0 -51.1 988.0 988.1 331.0 989.6 0.13 98 6.4 34022 -35.1 -78.1 0 43.0 -50.6 1009.5 1009.6 331.4 1011.2 0.14 99 5.9 34590 -33.9 -76.9 1 43.0 -50.7 1038.5 1038.6 331.8 1040.8 0.18 TRP 273 9762 -53.7 -58.7 54 5.0 -53.8 355 53 318.1 318.1 288.2 318.3 0.05 WND Sounding variables and indices 1000-500 mb thick: 5459.00 m Freezing level: 773.60 mb = 2210.25 m = 7251.40 ft Wetbulb zero: 803.25 mb = 1907.02 m = 6256.54 ft Precipitable water: 0.84 inches Sfc-500 mean rel hum: 85.76 % Est. max temperature: 15.60 C = 60.08 F Sfc-Lift cond lev (LCL): 977.85 mb = 306.93 m = 1006.98 ft T: 8.43 C 700-500 lapse rate: 5.90 C/km ThetaE index: 0.69 C Layer 967.0- 952.0 mb Conv cond level (CCL): 952.12 mb = 527.10 m = 1729.29 ft Mean mixing ratio: 6.43 g/kg Conv temperature: 11.69 C = 53.05 F Cap Strength: 8.03 C Lifted Index: 7.97 C Risk: None Lifted Index @300 mb: 10.21 C Lifted Index @700 mb: 3.83 C Showalter Index: 7.97 C Risk: None Total Totals Index: 42.30 C Risk: None Vertical Totals Index: 21.90 C Cross Totals Index: 20.40 C K Index: 20.10 Risk: 20-40 % chance of thunderstorms Sweat Index: 58.00 Risk: None Energy Index: 2.23 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 9.97 J/kg Max Up Vert Vel: 4.47 m/s Conv Inhibition (B-): 0.08 J/kg Cap Strength: 8.01 C Lift Cond Lev (LCL): 951.32 mb = 533.96 m = 1751.81 ft Lev Free Conv (LFC): 946.32 mb = 577.16 m = 1893.55 ft Equ Level (EL): 876.32 mb = 1203.96 m = 3949.94 ft B at Equ Level: 9.12 J/kg Max Parcel Lev (MPL): 836.32 mb = 1581.86 m = 5189.78 ft Wind level data Storm motion: 11 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 1014 3 250 3 2.8 1.0 | 199 18 5.9 17.2 1 1000 121 245 5 4.5 2.1 | 203 20 7.6 18.3 2 978 305 260 7 6.9 1.2 | 210 20 10.0 17.4 3 942 610 240 6 5.2 3.0 | 203 21 8.3 19.1 4 925 764 230 4 3.1 2.6 | 198 20 6.2 18.7 5 908 914 215 3 1.7 2.5 | 195 19 4.8 18.6 6 875 1219 270 5 5.0 -0.0 | 207 18 8.1 16.1 7 850 1451 300 9 7.8 -4.5 | 223 16 10.9 11.6 8 811 1829 330 14 7.0 -12.1 | 248 11 10.1 4.0 9 781 2134 315 17 12.0 -12.0 | 255 16 15.1 4.1 10 751 2438 345 18 4.7 -17.4 | 279 8 7.8 -1.2 11 723 2743 340 18 6.2 -16.9 | 275 9 9.3 -0.8 12 700 3005 340 21 7.2 -19.7 | 289 11 10.3 -3.6 13 669 3353 350 23 4.0 -22.7 | 312 10 7.1 -6.5 14 643 3658 335 26 11.0 -23.6 | 298 16 14.1 -7.4 15 618 3962 355 34 3.0 -33.9 | 341 19 6.1 -17.7 16 594 4267 355 34 3.0 -33.9 | 341 19 6.1 -17.7 17 548 4877 345 39 10.1 -37.7 | 328 25 13.2 -21.5 18 500 5580 345 34 8.8 -32.8 | 325 21 11.9 -16.7 19 465 6096 345 32 8.3 -30.9 | 322 19 11.4 -14.8 20 400 7190 360 46 -0.0 -46.0 | 354 30 3.1 -29.9 21 376 7620 360 46 -0.0 -46.0 | 354 30 3.1 -29.9 22 343 8230 5 46 -4.0 -45.8 | 2 30 -0.9 -29.7 23 300 9144 355 51 4.4 -50.8 | 348 35 7.6 -34.7 24 300 9150 355 52 4.5 -51.8 | 348 36 7.6 -35.7 25 287 9449 355 54 4.7 -53.8 | 348 38 7.8 -37.6 26 273 9754 355 54 4.7 -53.8 | 348 38 7.8 -37.6 27 273 9762 355 53 4.6 -52.8 | 348 37 7.7 -36.7 28 250 10330 360 49 -0.0 -49.0 | 355 33 3.1 -32.9 29 237 10668 360 48 -0.0 -48.0 | 354 32 3.1 -31.9 30 226 10973 345 43 11.1 -41.5 | 331 29 14.2 -25.4 31 206 11582 350 31 5.4 -30.5 | 329 17 8.5 -14.4 32 200 11780 335 34 14.4 -30.8 | 310 23 17.5 -14.7 33 197 11887 330 32 16.0 -27.7 | 301 22 19.1 -11.6 34 188 12192 345 28 7.2 -27.0 | 316 15 10.4 -10.9 35 171 12802 310 26 19.9 -16.7 | 271 23 23.0 -0.6 36 150 13640 310 19 14.6 -12.2 | 257 18 17.7 3.9 37 135 14326 300 17 14.7 -8.5 | 247 19 17.8 7.6 38 128 14630 310 14 10.7 -9.0 | 243 16 13.8 7.1 39 117 15240 275 16 15.9 -1.4 | 232 24 19.0 14.8 40 106 15850 305 16 13.1 -9.2 | 247 18 16.2 7.0 41 101 16154 275 11 11.0 -1.0 | 223 21 14.1 15.2 42 100 16230 265 13 13.0 1.1 | 223 24 16.1 17.3 43 96 16459 270 12 12.0 -0.0 | 223 22 15.1 16.1 44 92 16764 235 12 9.8 6.9 | 209 26 12.9 23.0 45 88 17069 265 19 18.9 1.7 | 231 28 22.0 17.8 46 83 17374 285 13 12.6 -3.4 | 231 20 15.7 12.8 47 80 17678 280 10 9.8 -1.7 | 222 19 13.0 14.4 48 76 17983 200 10 3.4 9.4 | 194 26 6.5 25.5 49 72 18288 220 16 10.3 12.3 | 205 31 13.4 28.4 50 70 18490 220 11 7.1 8.4 | 202 27 10.2 24.6 51 69 18593 240 13 11.3 6.5 | 212 27 14.4 22.6 52 66 18898 245 10 9.1 4.2 | 211 24 12.2 20.4 53 63 19202 225 1 0.7 0.7 | 193 17 3.8 16.9 54 57 19812 145 11 -6.3 9.0 | 173 25 -3.2 25.2 55 54 20117 150 17 -8.5 14.7 | 170 31 -5.4 30.9 56 52 20422 230 14 10.7 9.0 | 209 29 13.8 25.1 57 50 20620 30 5 -2.5 -4.3 | 183 12 0.6 11.8 58 49 20726 290 10 9.4 -3.4 | 224 18 12.5 12.7 59 47 21031 85 10 -10.0 -0.9 | 156 17 -6.9 15.3 60 45 21336 125 16 -13.1 9.2 | 158 27 -10.0 25.3 61 43 21641 135 10 -7.1 7.1 | 170 24 -4.0 23.2 62 37 22555 70 10 -9.4 -3.4 | 154 14 -6.3 12.7 63 35 22860 135 15 -10.6 10.6 | 164 28 -7.5 26.8 64 33 23165 155 14 -5.9 12.7 | 174 29 -2.8 28.8 65 32 23470 210 13 6.5 11.3 | 199 29 9.6 27.4 66 30 23850 340 11 3.8 -10.3 | 230 9 6.9 5.8 67 29 24079 35 3 -1.7 -2.5 | 186 14 1.4 13.7 68 28 24384 5 11 -1.0 -11.0 | 202 6 2.1 5.2 69 26 24689 75 11 -10.6 -2.8 | 151 15 -7.5 13.3 70 24 25298 240 10 8.7 5.0 | 209 24 11.8 21.1 71 22 25908 5 14 -1.2 -13.9 | 221 3 1.9 2.2 72 21 26213 45 15 -10.6 -10.6 | 126 9 -7.5 5.5 73 20 26430 100 9 -8.9 1.6 | 162 19 -5.8 17.7 74 20 26518 70 10 -9.4 -3.4 | 154 14 -6.3 12.7 75 19 26822 95 10 -10.0 0.9 | 158 18 -6.9 17.0 76 17 27432 50 14 -10.7 -9.0 | 133 10 -7.6 7.1 77 16 27737 65 11 -10.0 -4.6 | 149 13 -6.9 11.5 78 15 28346 85 1 -1.0 -0.1 | 187 16 2.1 16.1 79 14 28956 25 10 -4.2 -9.1 | 171 7 -1.1 7.1 80 13 29261 340 11 3.8 -10.3 | 230 9 6.9 5.8 81 12 29566 25 11 -4.6 -10.0 | 166 6 -1.5 6.2 82 11 30175 270 10 10.0 -0.0 | 219 21 13.1 16.1 83 10 30980 360 11 -0.0 -11.0 | 211 6 3.1 5.1 84 7 33400 65 1 -0.9 -0.4 | 188 16 2.2 15.7 Wind Parameters Mean winds (0-6000m): 340.9 at 21.9 knts Storm direction: 10.9 at 16.4 knts Shear (0-3000m) pos: 3.4 neg: 0.4 tot: 3.8 10-3/s Storm rel Dir Shear (0-3000m): 90.1 deg Storm rel helicity (0-3000m) pos: 108.8 neg: -29.4 tot: 79.4 m^2/s^2 ave: 26.5 10^-3 m/s^2 rel: 0.48 Storm rel vorticity (0-3000m) horiz: 7.6 stream: 3.7 10^-3/s Energy-Hel index: 0.01 Bulk Rich Number: 0.15 Bulk Shear: 67.00 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 ------------------------------------------------------------------------------- 500 253 6 206 20| 0.0 3.5 3.5| 19.2 -8.0 11.1 22.2 0.36| 6.3 2.3 1000 245 5 203 20| 0.0 0.6 0.6| 24.2 -28.5 -4.2 -4.2 -0.06| 5.8 -0.3 1500 258 5 206 19| 3.2 0.4 3.6| 64.8 -28.5 36.3 24.2 0.39| 7.2 2.8 2000 288 7 216 17| 4.2 0.3 4.5| 86.3 -28.5 57.8 28.9 0.48| 7.7 3.7 2500 305 9 225 15| 4.0 0.3 4.3|102.4 -28.5 73.9 29.6 0.48| 8.3 4.0 3000 317 11 232 13| 3.4 0.4 3.8|108.8 -29.4 79.4 26.5 0.48| 7.6 3.7 4000 331 15 253 11| 4.3 0.3 4.7|173.2 -36.5 136.7 34.2 0.53| 8.6 4.5 5000 339 19 280 10| 3.5 1.0 4.5|173.2 -66.2 107.0 21.4 0.40| 7.7 3.1 6000 341 22 294 11| 2.9 0.7 3.6|173.2 -77.1 96.1 16.0 0.35| 6.9 2.4 Wrote GIF file: /home/apache/climate/data/raob//KOAK/skewt/KOAK.skewt.20250427.12.gif