UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025101800.upa.cvt Date: 0000Z 18 OCT 25 Searching for VTBC... Searching the city database file for: VTBC ... Date:0000Z 18 OCT 25 Station: VTBC WMO ident: 48480 Latitude: 12.60 Longitude: 102.12 Elevation: 4.00 ------------------------------------------------------------------------------- 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 1008 4 26.0 23.9 88 2.1 24.5 0 0 298.5 301.9 297.4 353.4 18.84 1 1001 67 26.4 23.6 85 2.8 24.3 31 7 299.5 302.9 297.5 354.0 18.63 2 1000 76 26.4 23.6 85 2.8 24.3 35 8 299.5 303.0 297.5 354.1 18.65 3 970 346 26.0 22.6 82 3.4 23.5 36 27 301.8 305.1 297.7 355.2 18.08 4 925 764 23.2 20.9 87 2.3 21.6 50 22 303.0 306.2 297.4 353.6 17.06 5 888 1120 20.8 19.5 92 1.3 19.9 67 19 304.1 307.1 297.2 352.6 16.28 6 850 1499 19.2 16.5 84 2.7 17.4 80 18 306.3 308.9 296.3 348.4 14.03 7 748 2588 12.0 10.4 90 1.6 11.0 80 14 309.8 311.9 294.9 342.4 10.65 8 700 3144 9.8 6.6 80 3.2 7.9 70 18 313.3 315.0 294.4 340.6 8.77 9 680 3385 9.0 4.5 73 4.5 6.3 72 18 315.1 316.5 294.2 339.5 7.79 10 646 3808 7.2 -7.8 33 15.0 0.2 75 19 317.7 318.3 291.3 328.4 3.29 11 625 4080 5.2 -6.8 42 12.0 -0.5 75 20 318.4 319.1 291.8 330.4 3.67 12 622 4119 4.8 0.0 71 4.8 2.2 75 20 318.4 319.6 293.9 338.1 6.16 13 615 4211 4.4 -4.6 52 9.0 -0.1 75 20 319.0 319.8 292.6 333.3 4.42 14 601 4399 3.4 -1.2 72 4.6 1.0 75 21 319.9 321.0 294.0 338.7 5.84 15 579 4701 2.2 -4.8 60 7.0 -1.3 73 21 321.9 322.8 293.6 337.1 4.63 16 547 5158 -1.1 -3.6 83 2.5 -2.4 72 17 323.3 324.3 294.5 340.8 5.37 17 500 5870 -5.3 -7.8 83 2.5 -6.5 75 16 326.6 327.4 294.5 340.8 4.26 18 498 5902 -5.5 -7.8 84 2.3 -6.6 75 16 326.7 327.6 294.6 341.0 4.27 19 490 6029 -6.1 -8.5 83 2.4 -7.2 75 17 327.5 328.3 294.6 341.3 4.11 20 479 6207 -6.5 -14.5 53 8.0 -9.6 73 18 329.1 329.6 293.9 338.1 2.60 21 469 6372 -6.9 -11.4 70 4.5 -8.8 69 17 330.6 331.3 294.8 342.3 3.41 22 463 6473 -7.1 -16.1 49 9.0 -10.5 66 17 331.6 332.1 294.3 339.8 2.35 23 444 6798 -9.9 -14.3 70 4.4 -11.6 59 16 332.1 332.6 294.8 341.9 2.85 24 431 7028 -10.3 -21.3 40 11.0 -13.9 53 15 334.4 334.7 294.4 340.2 1.62 25 429 7064 -10.9 -17.9 56 7.0 -13.4 53 15 334.1 334.5 294.7 341.8 2.18 26 400 7600 -13.9 -27.9 30 14.0 -17.6 40 13 336.9 337.1 294.4 340.5 0.96 27 396 7676 -14.5 -29.5 27 15.0 -18.3 43 13 337.1 337.3 294.4 340.2 0.84 28 386 7869 -15.9 -27.9 35 12.0 -19.0 54 12 337.7 338.0 294.7 341.4 1.00 29 383 7928 -16.7 -21.7 65 5.0 -18.3 58 12 337.4 337.8 295.2 343.8 1.76 30 343 8748 -22.1 -35.1 30 13.0 -24.6 106 9 340.9 341.0 295.1 343.1 0.56 31 335 8921 -23.3 -30.3 53 7.0 -24.8 116 8 341.6 341.8 295.5 345.1 0.92 32 332 8986 -23.7 -38.7 24 15.0 -26.2 120 8 341.9 342.0 295.1 343.5 0.41 33 319 9277 -25.7 -29.7 69 4.0 -26.6 111 7 343.1 343.3 296.0 346.9 1.02 34 311 9461 -26.7 -32.7 57 6.0 -27.9 81 7 344.2 344.4 296.0 347.2 0.79 35 308 9531 -26.5 -36.5 38 10.0 -28.2 70 7 345.4 345.5 296.1 347.6 0.55 36 303 9649 -27.5 -39.5 31 12.0 -29.3 51 7 345.6 345.7 296.0 347.3 0.41 37 300 9720 -28.1 -37.1 42 9.0 -29.6 40 7 345.8 345.9 296.1 347.9 0.53 38 283 10135 -31.9 -35.0 74 3.1 -32.4 21 6 346.1 346.3 296.4 348.8 0.69 39 273 10389 -33.7 -37.5 69 3.8 -34.3 9 6 347.1 347.2 296.5 349.3 0.56 40 270 10466 -34.3 -44.3 36 10.0 -35.4 5 5 347.3 347.4 296.3 348.5 0.28 41 261 10702 -35.9 -44.9 39 9.0 -36.8 353 5 348.4 348.4 296.5 349.5 0.27 42 252 10945 -38.1 -49.1 31 11.0 -39.0 334 7 348.6 348.7 296.5 349.3 0.17 43 250 11000 -38.5 -48.5 34 10.0 -39.3 330 7 348.8 348.9 296.5 349.6 0.19 44 216 11986 -47.3 -56.3 35 9.0 -47.7 310 5 350.1 350.1 296.7 350.4 0.09 45 205 12329 -50.3 -54.9 58 4.6 -50.5 294 6 350.6 350.7 296.8 351.1 0.11 46 200 12490 -51.7 -57.7 49 6.0 -51.9 280 8 350.9 350.9 296.9 351.2 0.08 47 164 13739 -62.7 -67.5 52 4.8 -62.8 245 8 352.9 352.9 297.3 353.1 0.03 48 150 14280 -67.7 -72.1 53 4.4 -67.7 260 7 353.5 353.5 297.4 353.5 0.02 49 141 14650 -70.9 -75.9 47 5.0 -70.9 273 10 354.2 354.2 297.5 354.2 0.01 50 110 16081 -82.3 -86.5 48 4.2 -82.3 322 19 358.8 358.8 298.5 358.8 0.00 51 102 16501 -85.1 -87.6 64 2.5 -85.1 349 21 361.3 361.3 299.0 361.3 0.00 52 101 16555 -85.3 -87.9 63 2.6 -85.3 10 20 361.9 361.9 299.1 361.9 0.00 53 100 16610 -84.5 -87.3 61 2.8 -84.5 15 21 364.5 364.5 299.5 364.5 0.00 54 91 17139 -78.3 -85.3 31 7.0 -78.3 40 24 386.7 386.7 303.3 386.7 0.00 55 82 17725 -82.7 -88.7 35 6.0 -82.7 69 28 389.4 389.4 303.7 389.4 0.00 56 71 18547 -73.3 -87.3 10 14.0 -73.3 110 22 425.8 425.8 308.4 425.9 0.00 57 70 18630 -73.9 -87.9 10 14.0 -74.0 115 19 426.3 426.3 308.4 426.3 0.00 58 65 19064 -73.1 -88.1 8 15.0 -73.2 98 22 437.2 437.2 309.6 437.2 0.00 59 59 19641 -67.3 -90.3 2 23.0 -67.5 76 25 462.5 462.5 312.0 462.5 0.00 60 56 19956 -68.1 -90.1 3 22.0 -68.3 71 26 467.6 467.6 312.4 467.6 0.00 61 50 20640 -66.9 -90.9 2 24.0 -67.1 75 27 485.8 485.8 313.9 485.8 0.00 62 45 21279 -65.7 -90.7 2 25.0 -66.0 80 25 503.6 503.6 315.2 503.6 0.00 63 42 21703 -61.1 -90.1 1 29.0 -61.7 80 27 525.0 525.0 316.6 525.0 0.00 64 36 22654 -63.7 -90.7 1 27.0 -64.2 80 32 542.0 542.0 317.6 542.0 0.00 65 30 23780 -61.1 -90.1 1 29.0 -61.9 85 46 578.1 578.1 319.6 578.1 0.00 66 27 24437 -59.7 -89.7 1 30.0 -60.7 85 46 599.7 599.7 320.6 599.7 0.00 TRP 101 16555 -85.3 -87.9 63 2.6 -85.3 10 20 361.9 361.9 299.1 361.9 0.00 WND Sounding variables and indices 1000-500 mb thick: 5794.00 m Freezing level: 557.67 mb = 5005.56 m = 16422.25 ft Wetbulb zero: 640.16 mb = 3882.98 m = 12739.28 ft Precipitable water: 2.30 inches Sfc-500 mean rel hum: 77.14 % Est. max temperature: 33.35 C = 92.02 F Sfc-Lift cond lev (LCL): 978.13 mb = 271.85 m = 891.88 ft T: 26.11 C 700-500 lapse rate: 5.54 C/km ThetaE index: 26.76 C Layer 925.0- 625.0 mb Conv cond level (CCL): 890.17 mb = 1098.87 m = 3605.18 ft Mean mixing ratio: 17.77 g/kg Conv temperature: 31.59 C = 88.86 F Cap Strength: 1.36 C Lifted Index: -3.85 C Risk: Severe thunderstorms possible Lifted Index @300 mb: -1.99 C Lifted Index @700 mb: -1.94 C Showalter Index: -1.75 C Risk: Thunderstorms probable Total Totals Index: 46.30 C Risk: Scattered moderate thunderstorms Vertical Totals Index: 24.50 C Cross Totals Index: 21.80 C K Index: 37.80 Risk: > 80 % chance of thunderstorms Sweat Index: 250.00 Risk: None Energy Index: -1.55 Risk: Scattered severe thunderstorms Parcel Indices Parcel: using 100 mb layer CAPE (B+): 1083.24 J/kg Max Up Vert Vel: 46.55 m/s Conv Inhibition (B-): 27.77 J/kg Cap Strength: 1.36 C Lift Cond Lev (LCL): 919.76 mb = 813.53 m = 2669.01 ft Lev Free Conv (LFC): 824.76 mb = 1755.83 m = 5760.54 ft Equ Level (EL): 134.76 mb = 14910.78 m = 48919.28 ft B at Equ Level: 1073.85 J/kg Max Parcel Lev (MPL): 84.76 mb = 17538.46 m = 57540.18 ft Wind level data Storm motion: 99 at 13 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 1008 4 0 0 -0.0 -0.0 | 279 13 13.1 -2.1 1 1000 76 35 8 -4.6 -6.6 | 316 12 8.5 -8.7 2 974 305 35 27 -15.5 -22.1 | 6 24 -2.4 -24.3 3 941 610 40 26 -16.7 -19.9 | 9 22 -3.6 -22.1 4 925 764 50 22 -16.9 -14.1 | 13 17 -3.8 -16.3 5 909 914 60 20 -17.3 -10.0 | 19 13 -4.2 -12.1 6 850 1499 80 18 -17.7 -3.1 | 41 7 -4.6 -5.3 7 847 1524 80 18 -17.7 -3.1 | 41 7 -4.6 -5.3 8 789 2134 90 12 -12.0 0.0 | 333 2 1.1 -2.1 9 708 3048 70 17 -16.0 -5.8 | 20 8 -2.9 -7.9 10 700 3144 70 18 -16.9 -6.2 | 25 9 -3.8 -8.3 11 657 3658 75 19 -18.4 -4.9 | 37 9 -5.3 -7.1 12 587 4572 75 21 -20.3 -5.4 | 44 10 -7.2 -7.6 13 565 4877 70 20 -18.8 -6.8 | 32 11 -5.7 -9.0 14 524 5486 75 12 -11.6 -3.1 | 344 5 1.5 -5.2 15 500 5870 75 16 -15.5 -4.1 | 21 7 -2.4 -6.3 16 486 6096 75 18 -17.4 -4.7 | 32 8 -4.3 -6.8 17 400 7600 40 13 -8.4 -10.0 | 339 13 4.7 -12.1 18 399 7620 40 13 -8.4 -10.0 | 339 13 4.7 -12.1 19 324 9144 130 7 -5.4 4.5 | 253 8 7.7 2.4 20 300 9720 40 7 -4.5 -5.4 | 311 11 8.6 -7.5 21 262 10668 355 5 0.4 -5.0 | 298 15 13.5 -7.1 22 250 11000 330 7 3.5 -6.1 | 296 19 16.6 -8.2 23 209 12192 305 5 4.1 -2.9 | 286 18 17.2 -5.0 24 200 12490 280 8 7.9 -1.4 | 280 21 21.0 -3.5 25 164 13716 245 8 7.3 3.4 | 266 20 20.3 1.2 26 150 14280 260 7 6.9 1.2 | 273 20 20.0 -0.9 27 127 15240 295 15 13.6 -6.3 | 288 28 26.7 -8.5 28 103 16459 335 21 8.9 -19.0 | 314 31 22.0 -21.2 29 101 16555 10 20 -3.5 -19.7 | 336 24 9.6 -21.8 30 100 16610 15 21 -5.4 -20.3 | 341 24 7.7 -22.4 31 74 18288 95 31 -30.9 2.7 | 92 18 -17.8 0.6 32 70 18630 115 19 -17.2 8.0 | 145 7 -4.1 5.9 33 57 19812 70 26 -24.4 -8.9 | 46 16 -11.3 -11.0 34 50 20640 75 27 -26.1 -7.0 | 55 16 -13.0 -9.1 35 45 21336 80 25 -24.6 -4.3 | 61 13 -11.5 -6.5 36 35 22860 80 33 -32.5 -5.7 | 68 21 -19.4 -7.9 37 30 23780 85 46 -45.8 -4.0 | 79 33 -32.7 -6.1 38 26 24384 85 46 -45.8 -4.0 | 79 33 -32.7 -6.1 39 24 24689 85 45 -44.8 -3.9 | 79 32 -31.7 -6.1 Wind Parameters Mean winds (0-6000m): 69.3 at 17.7 knts Storm direction: 99.3 at 13.3 knts Shear (0-3000m) pos: 2.3 neg: 1.0 tot: 3.2 10-3/s Storm rel Dir Shear (0-3000m): 100.6 deg Storm rel helicity (0-3000m) pos: 120.0 neg: -3.4 tot: 116.7 m^2/s^2 ave: 38.9 10^-3 m/s^2 rel: 0.50 Storm rel vorticity (0-3000m) horiz: 10.2 stream: 5.1 10^-3/s Energy-Hel index: 0.80 Bulk Rich Number: 71.42 Bulk Shear: 15.17 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 36 19 354 18| 27.1 0.0 27.1| 91.6 0.0 91.6 183.3 0.81| 29.9 24.2 1000 43 21 4 18| 10.1 0.0 10.1|109.7 0.0 109.7 109.7 0.67| 21.1 14.1 1500 52 20 11 15| 6.2 0.0 6.2|117.4 0.0 117.4 78.3 0.65| 16.0 10.5 2000 58 19 15 13| 3.4 0.0 3.4|117.4 -2.7 114.7 57.4 0.54| 13.4 7.2 2500 62 18 15 11| 2.7 0.3 3.1|118.8 -3.4 115.4 46.2 0.52| 11.4 5.9 3000 64 17 15 10| 2.3 1.0 3.2|120.0 -3.4 116.7 38.9 0.50| 10.2 5.1 4000 67 18 19 10| 2.1 0.7 2.8|127.2 -3.4 123.8 31.0 0.51| 8.1 4.2 5000 68 18 24 10| 1.7 0.6 2.3|128.8 -10.9 117.9 23.6 0.45| 7.0 3.1 6000 69 18 22 9| 1.0 0.8 1.7|136.0 -19.5 116.5 19.4 0.38| 6.8 2.6 Wrote GIF file: /home/apache/climate/data/raob//VTBC/skewt/VTBC.skewt.20251018.00.gif