UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025042100.upa.cvt Date: 0000Z 21 APR 25 Searching for SBTT... Searching the city database file for: SBTT ... Date:0000Z 21 APR 25 Station: SBTT WMO ident: 82411 Latitude: -4.25 Longitude: -69.94 Elevation: 85.00 ------------------------------------------------------------------------------- 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 65 150 2 SFC 998 85 29.0 23.0 70 6.0 24.6 150 2 302.3 305.6 297.8 355.6 18.00 2 925 758 24.4 21.8 85 2.6 22.5 360 1 304.3 307.6 298.3 358.1 18.05 3 850 1497 20.0 15.3 74 4.7 16.8 80 4 307.1 309.5 295.8 346.2 12.97 4 701 3129 9.2 6.8 85 2.4 7.8 70 7 312.5 314.2 294.3 340.0 8.88 5 700 3141 9.2 6.7 84 2.5 7.7 70 7 312.7 314.4 294.3 340.0 8.83 6 646 3803 5.8 0.8 70 5.0 3.1 78 6 316.1 317.3 293.3 336.0 6.29 7 632 3982 5.8 -5.2 45 11.0 0.4 80 6 318.1 318.9 292.1 331.4 4.11 8 623 4100 5.8 -15.2 20 21.0 -2.6 78 10 319.4 319.7 290.5 325.7 1.88 9 599 4421 4.2 -5.8 48 10.0 -0.7 82 16 321.1 321.9 293.0 334.7 4.14 10 581 4668 2.6 -12.4 32 15.0 -3.7 91 19 322.1 322.6 291.9 330.6 2.54 11 577 4724 2.2 -5.8 55 8.0 -1.7 92 19 322.2 323.1 293.4 336.4 4.30 12 541 5242 -0.5 -11.5 43 11.0 -5.3 98 24 325.0 325.6 293.0 334.9 2.93 13 532 5376 -1.7 -6.4 70 4.7 -4.0 100 25 325.1 326.0 294.3 339.9 4.46 14 513 5666 -1.9 -35.9 5 34.0 -10.1 103 28 328.3 328.4 291.6 329.6 0.35 15 500 5870 -3.1 -28.1 12 25.0 -10.3 100 28 329.3 329.4 292.3 332.0 0.76 16 487 6078 -4.1 -19.1 30 15.0 -9.5 105 22 330.5 330.9 293.5 336.6 1.73 17 477 6241 -4.5 -30.5 11 26.0 -11.5 105 20 332.0 332.1 292.9 334.3 0.63 18 449 6714 -7.9 -26.9 20 19.0 -13.3 105 16 333.5 333.7 293.6 337.0 0.94 19 430 7048 -10.3 -17.3 56 7.0 -12.9 103 14 334.6 335.1 295.0 342.7 2.29 20 411 7394 -12.9 -22.9 43 10.0 -16.0 82 13 335.6 335.9 294.6 340.9 1.48 21 400 7600 -14.3 -21.3 55 7.0 -16.5 70 13 336.4 336.8 295.0 342.7 1.75 22 391 7772 -15.5 -20.4 66 4.9 -17.1 70 13 337.0 337.4 295.3 344.0 1.93 23 384 7908 -16.1 -24.1 50 8.0 -18.4 70 13 338.0 338.3 295.1 343.2 1.42 24 360 8390 -20.3 -24.5 69 4.2 -21.4 84 13 338.7 339.0 295.3 344.0 1.46 25 348 8641 -21.9 -27.9 58 6.0 -23.4 101 13 339.8 340.0 295.3 343.9 1.11 26 341 8790 -21.7 -40.7 16 19.0 -24.8 103 14 342.0 342.1 295.1 343.3 0.32 27 333 8965 -22.9 -44.9 12 22.0 -26.0 105 16 342.7 342.8 295.2 343.6 0.21 28 316 9346 -26.1 -49.1 10 23.0 -28.7 109 20 343.5 343.5 295.3 344.0 0.14 29 300 9720 -29.3 -49.3 13 20.0 -31.4 105 17 344.1 344.1 295.4 344.7 0.14 30 282 10161 -32.9 -48.9 19 16.0 -34.4 76 14 345.1 345.1 295.7 345.7 0.16 31 277 10287 -33.7 -44.7 32 11.0 -34.9 76 15 345.7 345.7 295.9 346.7 0.26 32 274 10363 -34.1 -38.5 64 4.4 -34.7 77 16 346.2 346.3 296.2 348.1 0.50 33 272 10415 -34.7 -41.7 49 7.0 -35.5 77 16 346.0 346.1 296.1 347.5 0.36 34 261 10703 -37.5 -39.8 79 2.3 -37.8 78 19 346.0 346.1 296.1 347.8 0.46 35 258 10783 -37.9 -39.6 84 1.7 -38.1 79 19 346.6 346.7 296.3 348.5 0.48 36 256 10837 -38.3 -41.3 73 3.0 -38.6 79 20 346.8 346.8 296.3 348.4 0.40 37 252 10945 -38.9 -57.9 12 19.0 -40.0 80 21 347.4 347.5 296.1 347.7 0.06 38 250 11000 -39.3 -50.3 30 11.0 -40.1 65 19 347.6 347.7 296.3 348.3 0.15 39 248 11055 -39.7 -50.7 30 11.0 -40.5 66 19 347.8 347.9 296.3 348.5 0.15 40 246 11110 -40.3 -63.3 7 23.0 -41.3 67 20 347.8 347.8 296.1 347.9 0.03 41 237 11363 -41.9 -44.1 79 2.2 -42.1 71 22 349.1 349.1 296.7 350.4 0.32 42 220 11863 -46.1 -49.9 65 3.8 -46.3 68 24 350.1 350.1 296.8 350.9 0.18 43 211 12139 -48.1 -61.1 21 13.0 -48.6 61 24 351.2 351.2 297.0 351.4 0.05 44 200 12490 -50.9 -63.9 20 13.0 -51.2 75 22 352.2 352.2 297.1 352.3 0.04 45 188 12889 -54.5 -70.5 12 16.0 -54.8 82 22 352.6 352.7 297.2 352.7 0.02 46 165 13709 -62.1 -73.1 22 11.0 -62.2 103 15 353.3 353.3 297.4 353.4 0.01 47 152 14210 -66.3 -72.3 43 6.0 -66.4 100 12 354.5 354.5 297.6 354.6 0.01 48 150 14290 -66.7 -73.7 37 7.0 -66.8 100 12 355.2 355.2 297.7 355.2 0.01 49 134 14961 -71.1 -81.1 21 10.0 -71.1 112 8 359.0 359.0 298.5 359.0 0.00 50 100 16650 -79.3 -89.3 18 10.0 -79.3 45 16 374.5 374.5 301.4 374.5 0.00 51 91 17182 -82.1 -90.1 24 8.0 -82.1 15 20 379.2 379.2 302.1 379.2 0.00 52 74 18359 -75.5 -89.5 9 14.0 -75.6 291 15 416.2 416.2 307.3 416.2 0.00 53 70 18680 -76.9 -89.9 11 13.0 -76.9 255 33 419.9 419.9 307.7 419.9 0.00 54 68 18846 -77.5 -90.5 11 13.0 -77.6 255 33 422.1 422.1 308.0 422.1 0.00 55 63 19288 -73.3 -90.3 6 17.0 -73.4 258 30 440.6 440.6 310.0 440.7 0.00 56 55 20081 -73.7 -90.7 6 17.0 -73.8 248 18 457.2 457.2 311.5 457.2 0.00 57 50 20650 -64.7 -90.7 2 26.0 -65.0 265 5 491.0 491.0 314.3 491.0 0.00 58 47 21028 -64.3 -90.3 2 26.0 -64.7 271 13 500.7 500.7 315.0 500.8 0.00 59 40 22012 -65.5 -91.5 2 26.0 -65.8 278 21 521.4 521.4 316.4 521.4 0.00 TRP 91 17182 -82.1 -90.1 24 8.0 -82.1 15 20 379.2 379.2 302.1 379.2 0.00 WND Sounding variables and indices 1000-500 mb thick: 5805.00 m Freezing level: 547.67 mb = 5146.46 m = 16884.51 ft Wetbulb zero: 630.86 mb = 3997.01 m = 13113.40 ft Precipitable water: 2.06 inches Sfc-500 mean rel hum: 64.63 % Est. max temperature: 33.84 C = 92.91 F Sfc-Lift cond lev (LCL): 915.16 mb = 851.43 m = 2793.38 ft T: 23.84 C 700-500 lapse rate: 4.51 C/km ThetaE index: 32.42 C Layer 850.0- 599.0 mb Conv cond level (CCL): 854.54 mb = 1450.43 m = 4758.58 ft Mean mixing ratio: 17.76 g/kg Conv temperature: 33.59 C = 92.47 F Cap Strength: 1.62 C Lifted Index: -2.42 C Risk: Severe thunderstorms possible Lifted Index @300 mb: -4.36 C Lifted Index @700 mb: -3.12 C Showalter Index: 1.27 C Risk: Showers probable Total Totals Index: 41.50 C Risk: None Vertical Totals Index: 23.10 C Cross Totals Index: 18.40 C K Index: 35.90 Risk: > 80 % chance of thunderstorms Sweat Index: 219.60 Risk: None Energy Index: -2.67 Risk: Severe Thunderstorms probable Parcel Indices Parcel: using 100 mb layer CAPE (B+): 1463.86 J/kg Max Up Vert Vel: 54.11 m/s Conv Inhibition (B-): 31.38 J/kg Cap Strength: 1.62 C Lift Cond Lev (LCL): 894.87 mb = 1047.38 m = 3436.25 ft Lev Free Conv (LFC): 819.87 mb = 1802.60 m = 5913.97 ft Equ Level (EL): 139.87 mb = 14705.84 m = 48246.91 ft B at Equ Level: 1451.74 J/kg Max Parcel Lev (MPL): 79.87 mb = 17924.42 m = 58806.44 ft Wind level data Storm motion: 118 at 8 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 ---------------------------------------------------------- 0 998 85 150 2 -1.0 1.7 | 289 7 6.2 -2.2 1 974 305 360 3 -0.0 -3.0 | 314 10 7.2 -6.9 2 941 610 340 3 1.0 -2.8 | 309 11 8.2 -6.7 3 925 758 360 1 -0.0 -1.0 | 304 9 7.2 -4.9 4 909 914 20 1 -0.3 -0.9 | 305 8 6.9 -4.8 5 850 1497 80 4 -3.9 -0.7 | 325 6 3.3 -4.6 6 788 2134 80 8 -7.9 -1.4 | 7 5 -0.7 -5.3 7 761 2438 60 7 -6.1 -3.5 | 351 7 1.1 -7.4 8 700 3141 70 7 -6.6 -2.4 | 354 6 0.6 -6.3 9 633 3962 80 6 -5.9 -1.0 | 345 5 1.3 -4.9 10 609 4267 75 15 -14.5 -3.9 | 43 11 -7.3 -7.8 11 587 4572 90 18 -18.0 0.0 | 70 11 -10.8 -3.9 12 505 5791 105 29 -28.0 7.5 | 100 21 -20.8 3.6 13 500 5870 100 28 -27.6 4.9 | 93 20 -20.4 1.0 14 486 6096 105 21 -20.3 5.4 | 97 13 -13.1 1.5 15 432 7010 105 14 -13.5 3.6 | 88 6 -6.3 -0.3 16 400 7600 70 13 -12.2 -4.4 | 31 10 -5.0 -8.3 17 399 7620 70 13 -12.2 -4.4 | 31 10 -5.0 -8.3 18 367 8230 70 13 -12.2 -4.4 | 31 10 -5.0 -8.3 19 352 8534 100 12 -11.8 2.1 | 69 5 -4.6 -1.8 20 311 9449 110 21 -19.7 7.2 | 105 13 -12.5 3.3 21 300 9720 105 17 -16.4 4.4 | 93 9 -9.2 0.5 22 299 9754 105 16 -15.5 4.1 | 92 8 -8.3 0.2 23 286 10058 75 13 -12.6 -3.4 | 36 9 -5.4 -7.3 24 251 10973 80 21 -20.7 -3.6 | 61 15 -13.5 -7.5 25 250 11000 65 19 -17.2 -8.0 | 40 16 -10.0 -11.9 26 229 11582 75 24 -23.2 -6.2 | 58 19 -16.0 -10.1 27 209 12192 60 24 -20.8 -12.0 | 41 21 -13.6 -15.9 28 200 12490 75 22 -21.3 -5.7 | 56 17 -14.0 -9.6 29 200 12497 65 26 -23.6 -11.0 | 48 22 -16.4 -14.9 30 173 13411 105 16 -15.5 4.1 | 92 8 -8.3 0.2 31 150 14290 100 12 -11.8 2.1 | 69 5 -4.6 -1.8 32 149 14326 90 11 -11.0 0.0 | 44 5 -3.8 -3.9 33 141 14630 105 12 -11.6 3.1 | 80 4 -4.4 -0.8 34 121 15545 125 1 -0.8 0.6 | 298 7 6.4 -3.3 35 103 16459 110 11 -10.3 3.8 | 88 3 -3.1 -0.1 36 100 16650 45 16 -11.3 -11.3 | 15 16 -4.1 -15.2 37 98 16764 55 13 -10.6 -7.5 | 17 12 -3.4 -11.4 38 91 17182 15 20 -5.2 -19.3 | 355 23 2.0 -23.2 39 88 17374 35 24 -13.8 -19.7 | 16 24 -6.6 -23.6 40 83 17678 350 23 4.0 -22.7 | 337 29 11.2 -26.5 41 79 17983 350 13 2.3 -12.8 | 330 19 9.5 -16.7 42 71 18593 255 16 15.5 4.1 | 269 23 22.7 0.2 43 70 18680 255 33 31.9 8.5 | 263 39 39.1 4.6 44 67 18898 255 33 31.9 8.5 | 263 39 39.1 4.6 45 61 19507 260 28 27.6 4.9 | 268 35 34.8 1.0 46 58 19812 230 18 13.8 11.6 | 250 22 21.0 7.7 47 55 20117 250 18 16.9 6.2 | 265 24 24.1 2.3 48 50 20650 265 5 5.0 0.4 | 286 13 12.2 -3.5 49 49 20726 230 14 10.7 9.0 | 254 19 17.9 5.1 50 46 21031 285 12 11.6 -3.1 | 290 20 18.8 -7.0 51 41 21641 285 19 18.4 -4.9 | 289 27 25.6 -8.8 52 38 21946 265 24 23.9 2.1 | 273 31 31.1 -1.8 53 36 22250 275 27 26.9 -2.4 | 280 35 34.1 -6.3 Wind Parameters Mean winds (0-6000m): 88.4 at 10.9 knts Storm direction: 118.4 at 8.2 knts Shear (0-3000m) pos: 1.1 neg: 1.2 tot: 2.3 10-3/s Storm rel Dir Shear (0-3000m): 64.8 deg Storm rel helicity (0-3000m) pos: 16.4 neg: -7.6 tot: 8.8 m^2/s^2 ave: 2.9 10^-3 m/s^2 rel: 0.30 Storm rel vorticity (0-3000m) horiz: 3.6 stream: 1.1 10^-3/s Energy-Hel index: 0.14 Bulk Rich Number: 87.28 Bulk Shear: 16.77 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 ------------------------------------------------------------------------------- 500 359 3 313 10| 0.0 5.1 5.1| 5.4 -2.9 2.5 4.9 0.28| 7.4 2.1 1000 1 2 310 9| 1.3 2.6 3.8| 7.7 -5.1 2.6 2.6 0.21| 5.4 1.1 1500 38 2 316 8| 2.0 1.7 3.7| 11.6 -5.1 6.5 4.3 0.31| 4.9 1.5 2000 61 3 323 7| 1.5 1.4 2.8| 15.8 -5.1 10.7 5.4 0.43| 4.4 1.9 2500 65 4 329 7| 1.2 1.5 2.6| 15.9 -7.6 8.3 3.3 0.30| 4.2 1.2 3000 65 5 333 7| 1.1 1.2 2.3| 16.4 -7.6 8.8 2.9 0.30| 3.6 1.1 4000 68 5 338 6| 1.2 0.9 2.1| 21.2 -8.7 12.4 3.1 0.34| 3.4 1.1 5000 78 8 4 6| 2.4 0.7 3.1| 54.8 -8.7 46.1 9.2 0.49| 4.3 2.1 6000 88 11 41 6| 1.9 0.6 2.5| 82.2 -21.7 60.4 10.1 0.41| 5.0 2.1 Wrote GIF file: /home/apache/climate/data/raob//SBTT/skewt/SBTT.skewt.20250421.00.gif