UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025120912.upa.cvt Date: 1200Z 9 DEC 25 Searching for KOAK... Searching the city database file for: KOAK ... Date:1200Z 9 DEC 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 1025 3 4.2 3.6 96 0.6 3.9 165 3 275.4 276.2 275.9 288.4 4.83 1 1021 36 6.6 4.5 86 2.1 5.6 148 3 278.1 279.0 277.7 292.2 5.17 2 1015 86 7.2 4.7 84 2.5 6.0 121 4 279.2 280.1 278.4 293.6 5.27 3 1001 203 6.2 4.3 88 1.9 5.3 59 5 279.3 280.2 278.4 293.5 5.20 4 1000 211 6.4 4.4 87 2.0 5.4 55 5 279.5 280.4 278.6 293.9 5.24 5 998 227 6.2 4.0 86 2.2 5.1 54 6 279.5 280.4 278.4 293.5 5.10 6 993 269 7.8 4.1 77 3.7 6.0 52 7 281.5 282.4 279.4 295.8 5.17 7 989 302 7.2 4.0 80 3.2 5.6 50 8 281.2 282.1 279.3 295.5 5.15 8 981 369 8.0 3.6 74 4.4 5.8 46 9 282.7 283.6 279.9 296.8 5.05 9 979 386 10.4 3.4 62 7.0 6.9 44 9 285.3 286.1 281.0 299.3 4.99 10 976 412 10.8 2.8 58 8.0 6.8 43 9 285.9 286.8 281.1 299.5 4.79 11 975 420 11.8 2.8 54 9.0 7.3 42 9 287.0 287.9 281.6 300.7 4.80 12 971 455 12.8 1.8 47 11.0 7.3 40 10 288.4 289.2 281.8 301.2 4.48 13 967 490 14.8 2.8 44 12.0 8.6 38 10 290.7 291.6 283.2 304.7 4.84 14 964 516 15.4 1.4 39 14.0 8.3 36 10 291.6 292.4 283.1 304.3 4.39 15 961 542 15.8 2.8 42 13.0 9.0 34 10 292.3 293.1 284.0 306.4 4.87 16 938 748 14.8 3.8 48 11.0 9.0 19 12 293.3 294.2 284.9 308.8 5.36 17 936 766 15.0 4.0 48 11.0 9.1 18 12 293.7 294.6 285.1 309.5 5.45 18 933 793 15.0 3.0 44 12.0 8.7 16 12 293.9 294.8 284.8 308.8 5.09 19 930 820 15.8 -2.2 29 18.0 7.2 14 13 295.0 295.6 283.5 305.4 3.49 20 925 866 16.0 -3.0 27 19.0 7.0 10 13 295.7 296.3 283.6 305.6 3.31 21 920 912 17.0 -7.0 19 24.0 6.4 5 14 297.2 297.6 283.2 304.6 2.45 22 908 1024 16.4 -2.6 27 19.0 7.2 1 14 297.7 298.3 284.6 308.1 3.47 23 900 1099 16.6 -8.4 17 25.0 5.8 359 13 298.6 299.0 283.6 305.5 2.25 24 879 1299 15.6 -2.4 29 18.0 6.8 355 15 299.6 300.3 285.5 310.6 3.64 25 876 1328 15.6 -4.4 25 20.0 6.2 355 15 299.9 300.5 285.1 309.5 3.14 26 870 1386 15.4 0.4 36 15.0 7.6 355 16 300.3 301.1 286.7 313.9 4.52 27 869 1396 15.4 1.4 39 14.0 8.0 355 16 300.4 301.3 287.1 315.0 4.87 28 865 1435 15.8 -0.2 34 16.0 7.6 355 17 301.2 302.0 286.9 314.4 4.36 29 850 1583 14.6 0.6 38 14.0 7.3 355 20 301.4 302.3 287.3 315.6 4.70 30 845 1633 14.4 1.4 41 13.0 7.5 354 20 301.7 302.7 287.7 316.8 5.01 31 823 1855 13.6 -8.4 21 22.0 3.9 350 21 303.2 303.6 285.7 310.9 2.46 32 820 1886 13.8 -16.2 11 30.0 2.5 350 21 303.7 304.0 284.5 307.9 1.31 33 809 1999 12.6 -7.4 24 20.0 3.7 350 20 303.6 304.1 286.1 312.0 2.71 34 802 2072 12.2 -7.8 24 20.0 3.4 350 19 303.9 304.4 286.1 312.2 2.65 35 798 2114 12.0 -11.0 19 23.0 2.5 350 19 304.2 304.5 285.5 310.7 2.07 36 795 2145 12.0 -16.0 13 28.0 1.5 350 19 304.5 304.7 284.9 308.9 1.38 37 780 2305 11.4 -8.6 24 20.0 2.7 350 21 305.5 306.0 286.6 313.5 2.56 38 755 2576 10.8 -11.2 20 22.0 1.6 348 22 307.7 308.1 286.9 314.6 2.15 39 700 3201 6.2 -13.8 22 20.0 -1.6 340 16 309.4 309.7 287.2 315.4 1.88 40 671 3545 3.6 -15.4 23 19.0 -3.4 331 18 310.2 310.5 287.3 315.8 1.72 41 651 3790 2.2 -19.8 18 22.0 -5.1 321 16 311.3 311.5 287.2 315.4 1.22 42 648 3827 2.4 -27.6 9 30.0 -6.0 320 16 312.0 312.1 286.8 314.1 0.61 43 635 3990 1.2 -23.8 13 25.0 -6.3 315 15 312.4 312.6 287.2 315.4 0.88 44 629 4066 1.8 -33.2 5 35.0 -6.8 312 14 313.9 314.0 287.2 315.3 0.37 45 614 4260 1.2 -29.8 8 31.0 -7.1 306 13 315.4 315.5 287.8 317.3 0.53 46 560 4991 -5.5 -24.5 21 19.0 -10.8 302 12 315.9 316.1 288.5 319.1 0.94 47 548 5160 -6.9 -24.9 22 18.0 -11.8 288 11 316.2 316.4 288.5 319.4 0.92 48 531 5405 -8.3 -28.3 18 20.0 -13.2 287 12 317.4 317.5 288.7 319.9 0.70 49 529 5434 -8.1 -34.1 10 26.0 -13.6 287 13 318.0 318.1 288.6 319.4 0.40 50 526 5478 -8.3 -40.3 6 32.0 -14.2 287 13 318.3 318.3 288.5 319.1 0.22 51 515 5642 -8.7 -46.7 3 38.0 -14.7 289 14 319.7 319.7 288.8 320.1 0.11 52 500 5870 -10.5 -46.5 3 36.0 -16.0 280 18 320.2 320.3 288.9 320.7 0.12 53 442 6803 -18.1 -47.1 6 29.0 -21.8 293 16 322.1 322.2 289.5 322.6 0.12 54 426 7077 -20.5 -37.5 20 17.0 -23.2 292 13 322.5 322.6 289.9 323.8 0.36 55 400 7540 -23.1 -41.1 18 18.0 -25.5 275 10 325.0 325.0 290.6 326.0 0.26 56 300 9580 -40.1 -64.1 6 24.0 -41.0 250 4 328.8 328.9 291.4 328.9 0.02 57 250 10790 -50.5 -60.5 30 10.0 -50.8 65 2 331.0 331.0 292.0 331.2 0.04 58 200 12210 -62.5 -70.5 33 8.0 -62.6 300 4 333.8 333.8 292.7 333.8 0.01 59 150 13940 -71.1 -79.1 30 8.0 -71.1 315 49 347.6 347.6 296.1 347.6 0.01 60 143 14224 -72.7 -79.7 34 7.0 -72.7 330 51 349.6 349.6 296.5 349.6 0.00 61 100 16360 -67.9 -86.9 5 19.0 -68.0 305 33 396.5 396.5 304.8 396.5 0.00 62 88 17128 -66.9 -86.9 4 20.0 -67.0 323 25 413.3 413.3 306.9 413.3 0.00 63 80 17700 -68.7 -87.7 5 19.0 -68.8 316 18 421.0 421.0 307.9 421.0 0.00 64 70 18500 -67.7 -88.7 3 21.0 -67.8 335 13 439.5 439.6 309.8 439.6 0.00 65 60 19434 -67.1 -89.1 3 22.0 -67.3 310 8 460.7 460.7 311.8 460.7 0.00 66 57 19747 -64.5 -88.5 2 24.0 -64.8 330 18 473.4 473.4 312.9 473.4 0.00 67 53 20193 -65.9 -88.9 3 23.0 -66.1 33 17 480.1 480.1 313.5 480.1 0.00 68 53 20193 -64.3 -88.3 2 24.0 -64.6 33 17 483.8 483.8 313.8 483.8 0.00 69 51 20428 -65.1 -89.1 2 24.0 -65.4 37 12 487.3 487.3 314.0 487.3 0.00 70 50 20550 -63.9 -88.9 2 25.0 -64.3 350 14 492.9 492.9 314.4 492.9 0.00 71 47 20928 -64.1 -89.1 2 25.0 -64.5 10 16 501.2 501.2 315.0 501.2 0.00 72 45 21195 -62.9 -88.9 2 26.0 -63.3 18 18 510.4 510.4 315.7 510.4 0.00 73 44 21334 -60.3 -88.3 1 28.0 -60.9 20 18 520.1 520.1 316.3 520.1 0.00 74 43 21477 -59.7 -87.7 1 28.0 -60.4 25 21 525.0 525.0 316.6 525.0 0.00 75 38 22243 -62.5 -88.5 2 26.0 -63.0 70 10 536.7 536.7 317.3 536.7 0.00 76 33 23118 -59.7 -87.7 1 28.0 -60.6 61 19 566.2 566.2 319.0 566.3 0.01 77 31 23507 -61.7 -88.7 2 27.0 -62.4 56 29 571.1 571.1 319.2 571.1 0.00 78 30 23710 -60.9 -87.9 2 27.0 -61.7 50 35 578.6 578.6 319.6 578.7 0.01 79 25 24845 -60.1 -88.1 1 28.0 -61.2 93 24 611.9 611.9 321.2 611.9 0.01 80 23 25365 -60.9 -87.9 2 27.0 -62.0 69 17 624.3 624.3 321.7 624.3 0.01 81 21 25932 -59.3 -88.3 1 29.0 -60.7 57 23 645.6 645.6 322.5 645.6 0.01 82 20 26240 -56.1 -87.1 1 31.0 -58.1 75 25 664.5 664.5 323.2 664.5 0.01 83 19 26565 -55.5 -86.5 1 31.0 -57.7 52 30 676.1 676.1 323.6 676.2 0.01 84 16 27654 -56.9 -85.9 1 29.0 -59.1 76 26 705.6 705.6 324.6 705.7 0.02 85 14 28504 -53.7 -84.7 1 31.0 -56.9 80 18 743.9 744.0 325.8 744.1 0.02 86 12 29484 -57.5 -86.5 1 29.0 -60.0 91 19 764.0 764.0 326.3 764.2 0.02 87 12 29484 -56.7 -86.7 1 30.0 -59.5 91 19 766.9 766.9 326.4 767.0 0.02 88 11 30033 -58.1 -87.1 1 29.0 -60.7 55 19 781.1 781.1 326.8 781.2 0.02 89 11 30033 -55.9 -86.9 1 31.0 -59.1 55 19 789.1 789.1 327.0 789.2 0.02 90 10 30640 -54.9 -84.9 1 30.0 -58.6 55 18 814.6 814.6 327.6 814.9 0.03 91 9.5 30967 -55.5 -85.5 1 30.0 -59.2 61 19 824.4 824.4 327.8 824.6 0.03 92 8.0 32065 -54.1 -85.1 1 31.0 -58.7 83 21 871.5 871.5 328.8 871.8 0.04 93 7.9 32146 -53.9 -84.9 1 31.0 -58.6 85 21 875.4 875.4 329.0 875.8 0.04 94 7.7 32310 -55.3 -85.3 1 30.0 -59.6 88 21 876.2 876.3 329.0 876.6 0.04 95 7.2 32739 -54.1 -85.1 1 31.0 -59.0 96 22 898.1 898.2 329.4 898.5 0.04 96 7.0 32920 -54.3 -85.3 1 31.0 -59.2 100 22 904.6 904.6 329.5 905.0 0.04 97 6.7 33200 -55.1 -86.1 1 31.0 -59.9 912.6 912.7 329.7 913.0 0.04 98 6.4 33494 -53.1 -85.1 1 32.0 -58.8 933.2 933.2 330.1 933.6 0.04 99 5.3 34706 -54.3 -85.3 1 31.0 -60.1 979.5 979.5 330.8 980.0 0.05 TRP 143 14224 -72.7 -79.7 34 7.0 -72.7 330 51 349.6 349.6 296.5 349.6 0.00 WND Sounding variables and indices 1000-500 mb thick: 5659.00 m Freezing level: 604.33 mb = 4391.23 m = 14406.76 ft Wetbulb zero: 727.16 mb = 2886.56 m = 9470.24 ft Precipitable water: 0.53 inches Sfc-500 mean rel hum: 24.81 % Est. max temperature: 28.93 C = 84.08 F Sfc-Lift cond lev (LCL): 1015.54 mb = 81.08 m = 266.00 ft T: 7.15 C 700-500 lapse rate: 6.26 C/km ThetaE index: 4.09 C Layer 933.0- 925.0 mb Conv cond level (CCL): 570.76 mb = 4839.73 m = 15878.18 ft Mean mixing ratio: 4.95 g/kg Conv temperature: 44.93 C = 112.87 F Cap Strength: 18.00 C Lifted Index: 18.02 C Risk: None Lifted Index @300 mb: 20.11 C Lifted Index @700 mb: 15.26 C Showalter Index: 8.41 C Risk: None Total Totals Index: 36.20 C Risk: None Vertical Totals Index: 25.10 C Cross Totals Index: 11.10 C K Index: 5.70 Risk: None Sweat Index: 65.20 Risk: None Energy Index: 1.23 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 89.99 J/kg Max Up Vert Vel: 13.42 m/s Conv Inhibition (B-): 60742.07 J/kg Cap Strength: 18.04 C Lift Cond Lev (LCL): 861.64 mb = 1467.96 m = 4816.10 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 5 at 11 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 1025 3 165 3 -0.8 2.9 | 181 14 0.2 14.3 1 1000 211 55 5 -4.1 -2.9 | 160 9 -3.1 8.5 2 989 305 50 8 -6.1 -5.1 | 140 8 -5.2 6.2 3 954 610 30 11 -5.5 -9.5 | 112 5 -4.5 1.8 4 925 866 10 13 -2.3 -12.8 | 42 2 -1.3 -1.4 5 920 914 5 14 -1.2 -13.9 | 6 3 -0.3 -2.6 6 887 1219 355 13 1.1 -13.0 | 307 3 2.1 -1.6 7 850 1583 355 20 1.7 -19.9 | 342 9 2.7 -8.6 8 825 1829 350 21 3.6 -20.7 | 334 10 4.6 -9.3 9 796 2134 350 19 3.3 -18.7 | 330 8 4.3 -7.3 10 767 2438 350 22 3.8 -21.7 | 335 11 4.8 -10.3 11 740 2743 345 22 5.7 -21.3 | 326 12 6.7 -9.9 12 700 3201 340 16 5.5 -15.0 | 300 7 6.4 -3.7 13 687 3353 340 20 6.8 -18.8 | 314 11 7.8 -7.4 14 661 3658 325 17 9.8 -13.9 | 283 11 10.7 -2.6 15 612 4267 305 13 10.6 -7.5 | 251 12 11.6 3.9 16 589 4572 320 13 8.4 -10.0 | 261 9 9.3 1.4 17 567 4877 310 12 9.2 -7.7 | 250 11 10.2 3.7 18 545 5182 285 11 10.6 -2.8 | 234 14 11.6 8.5 19 505 5791 290 15 14.1 -5.1 | 247 16 15.1 6.2 20 500 5870 280 18 17.7 -3.1 | 246 20 18.7 8.2 21 485 6096 280 17 16.7 -3.0 | 245 20 17.7 8.4 22 466 6401 280 20 19.7 -3.5 | 249 22 20.7 7.9 23 429 7010 300 14 12.1 -7.0 | 252 14 13.1 4.4 24 412 7315 260 10 9.8 1.7 | 220 17 10.8 13.1 25 400 7540 275 10 10.0 -0.9 | 226 15 10.9 10.5 26 396 7620 270 10 10.0 -0.0 | 224 16 11.0 11.4 27 379 7925 310 11 8.4 -7.1 | 245 10 9.4 4.3 28 363 8230 340 12 4.1 -11.3 | 269 5 5.1 0.1 29 348 8534 330 12 6.0 -10.4 | 262 7 7.0 1.0 30 319 9144 285 8 7.7 -2.1 | 223 13 8.7 9.3 31 300 9580 250 4 3.8 1.4 | 200 14 4.7 12.7 32 267 10363 0 0 -0.0 -0.0 | 185 11 1.0 11.4 33 250 10790 65 2 -1.8 -0.8 | 175 11 -0.9 10.5 34 200 12210 300 4 3.5 -2.0 | 205 10 4.4 9.4 35 172 13106 250 10 9.4 3.4 | 215 18 10.4 14.8 36 164 13411 285 9 8.7 -2.3 | 227 13 9.7 9.0 37 150 13940 315 49 34.6 -34.6 | 303 43 35.6 -23.3 38 148 14021 310 47 36.0 -30.2 | 297 41 37.0 -18.8 39 143 14224 330 51 25.5 -44.2 | 321 42 26.5 -32.8 40 141 14326 325 51 29.3 -41.8 | 315 43 30.2 -30.4 41 134 14630 340 25 8.6 -23.5 | 322 15 9.5 -12.1 42 127 14935 310 17 13.0 -10.9 | 268 14 14.0 0.4 43 121 15240 295 20 18.1 -8.5 | 261 19 19.1 2.9 44 115 15545 290 28 26.3 -9.6 | 266 27 27.3 1.8 45 104 16154 335 30 12.7 -27.2 | 319 21 13.6 -15.8 46 100 16360 305 33 27.0 -18.9 | 285 29 28.0 -7.6 47 98 16459 295 23 20.8 -9.7 | 266 22 21.8 1.7 48 93 16764 305 33 27.0 -18.9 | 285 29 28.0 -7.6 49 84 17374 335 19 8.0 -17.2 | 303 11 9.0 -5.8 50 80 17678 315 18 12.7 -12.7 | 276 14 13.7 -1.4 51 76 17983 335 20 8.5 -18.1 | 306 12 9.4 -6.8 52 73 18288 325 21 12.0 -17.2 | 294 14 13.0 -5.8 53 70 18500 335 13 5.5 -11.8 | 274 6 6.5 -0.4 54 69 18593 350 18 3.1 -17.7 | 327 8 4.1 -6.4 55 62 19202 310 12 9.2 -7.7 | 250 11 10.2 3.7 56 59 19507 310 7 5.4 -4.5 | 223 9 6.3 6.9 57 56 19812 335 21 8.9 -19.0 | 308 12 9.8 -7.7 58 54 20117 30 19 -9.5 -16.5 | 59 10 -8.5 -5.1 59 51 20422 40 12 -7.7 -9.2 | 108 7 -6.8 2.2 60 50 20550 350 14 2.4 -13.8 | 305 4 3.4 -2.4 61 49 20726 360 11 -0.0 -11.0 | 249 1 1.0 0.4 62 46 21031 15 19 -4.9 -18.4 | 30 8 -4.0 -7.0 63 44 21336 20 18 -6.2 -16.9 | 43 8 -5.2 -5.5 64 42 21641 30 25 -12.5 -21.7 | 48 15 -11.5 -10.3 65 40 21946 65 17 -15.4 -7.2 | 106 15 -14.4 4.2 66 38 22250 70 10 -9.4 -3.4 | 133 12 -8.4 8.0 67 34 22860 40 20 -12.9 -15.3 | 72 13 -11.9 -3.9 68 33 23165 65 19 -17.2 -8.0 | 102 17 -16.3 3.3 69 30 23710 50 35 -26.8 -22.5 | 67 28 -25.9 -11.1 70 27 24384 65 34 -30.8 -14.4 | 84 30 -29.9 -3.0 71 26 24689 90 26 -26.0 0.0 | 114 28 -25.0 11.4 72 24 24994 95 22 -21.9 1.9 | 122 25 -21.0 13.3 73 23 25298 70 16 -15.0 -5.5 | 113 15 -14.1 5.9 74 22 25603 65 19 -17.2 -8.0 | 102 17 -16.3 3.3 75 20 26213 50 27 -20.7 -17.4 | 73 21 -19.7 -6.0 76 20 26240 75 25 -24.1 -6.5 | 102 24 -23.2 4.9 77 19 26518 45 31 -21.9 -21.9 | 63 23 -21.0 -10.5 78 18 26822 90 24 -24.0 0.0 | 116 26 -23.0 11.4 79 17 27432 65 26 -23.6 -11.0 | 91 23 -22.6 0.4 80 15 28042 95 25 -24.9 2.2 | 120 28 -23.9 13.6 81 14 28651 75 16 -15.5 -4.1 | 117 16 -14.5 7.2 82 13 28956 120 12 -10.4 6.0 | 151 20 -9.4 17.4 83 12 29261 95 17 -16.9 1.5 | 129 21 -16.0 12.9 84 12 29566 90 20 -20.0 0.0 | 121 22 -19.0 11.4 85 11 29870 55 17 -13.9 -9.8 | 97 13 -13.0 1.6 86 11 30175 55 20 -16.4 -11.5 | 90 15 -15.4 -0.1 87 10 30640 55 18 -14.7 -10.3 | 94 14 -13.8 1.0 88 7 32920 100 22 -21.7 3.8 | 126 26 -20.7 15.2 Wind Parameters Mean winds (0-6000m): 334.8 at 15.2 knts Storm direction: 4.8 at 11.4 knts Shear (0-3000m) pos: 0.0 neg: 3.7 tot: 3.7 10-3/s Storm rel Dir Shear (0-3000m): 132.8 deg Storm rel helicity (0-3000m) pos: 5.1 neg: -49.1 tot: -44.0 m^2/s^2 ave: -14.7 10^-3 m/s^2 rel: -0.50 Storm rel vorticity (0-3000m) horiz: 7.2 stream: -3.6 10^-3/s Energy-Hel index: 0.00 Bulk Rich Number: 2.94 Bulk Shear: 30.66 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 53 6 151 9| 0.0 12.4 12.4| 0.0 -26.0 -26.0 -52.1 -0.72| 13.7 -9.9 1000 28 9 133 5| 0.0 8.5 8.5| 0.0 -31.7 -31.7 -31.7 -0.76| 11.3 -8.5 1500 13 11 110 2| 0.0 7.3 7.3| 2.7 -32.7 -30.0 -20.0 -0.55| 10.0 -5.5 2000 5 13 4 2| 0.0 5.9 5.9| 3.2 -37.0 -33.8 -16.9 -0.52| 8.6 -4.5 2500 0 15 346 4| 0.0 5.1 5.1| 5.1 -38.4 -33.3 -13.3 -0.46| 7.6 -3.5 3000 357 16 338 5| 0.0 3.7 3.7| 5.1 -49.1 -44.0 -14.7 -0.50| 7.2 -3.6 4000 350 16 320 6| 0.0 2.2 2.2| 8.5 -79.1 -70.6 -17.6 -0.53| 7.3 -3.9 5000 343 16 303 6| 0.2 1.6 1.8| 12.6 -95.9 -83.3 -16.7 -0.52| 6.9 -3.5 6000 335 15 288 8| 0.2 1.8 1.9| 27.2-106.9 -79.7 -13.3 -0.43| 6.7 -2.9 Wrote GIF file: /home/apache/climate/data/raob//KOAK/skewt/KOAK.skewt.20251209.12.gif