UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025101200.upa.cvt Date: 0000Z 12 OCT 25 Searching for SBTT... Searching the city database file for: SBTT ... Date:0000Z 12 OCT 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 ------------------------------------------------------------------------------- SFC 1000 85 27.0 22.0 74 5.0 23.4 350 3 300.1 303.2 296.5 349.6 16.87 1 925 771 23.0 21.1 89 1.9 21.6 335 3 302.8 306.0 297.5 354.0 17.28 2 861 1395 18.8 18.8 100 0.0 18.8 342 3 304.7 307.7 297.2 352.6 16.06 3 850 1506 18.4 17.1 92 1.3 17.5 360 3 305.4 308.1 296.4 349.1 14.59 4 713 2998 10.2 7.3 82 2.9 8.4 76 5 312.1 313.9 294.3 340.0 9.04 5 700 3152 10.0 5.6 74 4.4 7.3 75 4 313.6 315.1 294.1 339.0 8.18 6 622 4128 5.8 -3.2 52 9.0 1.1 32 7 319.5 320.5 293.1 335.2 4.86 7 512 5693 -4.9 -9.3 71 4.4 -6.8 38 4 324.9 325.6 293.6 337.2 3.69 8 508 5755 -5.1 -11.1 63 6.0 -7.7 39 3 325.3 326.0 293.4 336.2 3.23 9 500 5880 -6.1 -10.2 73 4.1 -7.9 40 3 325.6 326.3 293.7 337.4 3.52 10 487 6085 -7.7 -9.3 88 1.6 -8.4 73 4 326.1 326.9 294.1 339.1 3.88 11 478 6230 -8.3 -13.1 68 4.8 -10.2 79 4 327.1 327.7 293.6 337.0 2.92 12 470 6361 -9.1 -11.5 83 2.4 -10.1 83 5 327.7 328.4 294.1 339.1 3.38 13 465 6443 -9.5 -17.5 52 8.0 -12.3 85 5 328.2 328.6 293.2 335.4 2.08 14 418 7258 -14.7 -15.8 91 1.1 -15.1 110 6 331.7 332.2 294.6 340.9 2.67 15 400 7590 -16.1 -20.2 71 4.1 -17.4 120 7 334.1 334.5 294.6 340.9 1.92 16 311 9441 -28.1 -31.0 76 2.9 -28.7 91 9 342.2 342.4 295.7 345.7 0.93 TRP WND Sounding variables and indices 1000-500 mb thick: 5795.00 m Freezing level: 562.37 mb = 4976.71 m = 16327.60 ft Wetbulb zero: 606.36 mb = 4333.17 m = 14216.28 ft Precipitable water: 2.23 inches Sfc-500 mean rel hum: 75.34 % Est. max temperature: 32.27 C = 90.09 F Sfc-Lift cond lev (LCL): 930.10 mb = 722.63 m = 2370.79 ft T: 23.28 C 700-500 lapse rate: 5.90 C/km ThetaE index: 18.79 C Layer 861.0- 512.0 mb Conv cond level (CCL): 881.00 mb = 1195.15 m = 3921.06 ft Mean mixing ratio: 17.07 g/kg Conv temperature: 30.96 C = 87.73 F Cap Strength: 1.32 C Lifted Index: -3.98 C Risk: Severe thunderstorms possible Lifted Index @700 mb: -1.21 C Showalter Index: -2.84 C Risk: Severe thunderstorms possible Total Totals Index: 47.70 C Risk: Scattered moderate thunderstorms Vertical Totals Index: 24.50 C Cross Totals Index: 23.20 C K Index: 37.20 Risk: > 80 % chance of thunderstorms Sweat Index: 214.20 Risk: None Energy Index: -2.31 Risk: Severe Thunderstorms probable Parcel Indices Parcel: using 100 mb layer CAPE (B+): 777.11 J/kg Max Up Vert Vel: 39.42 m/s Conv Inhibition (B-): 16.60 J/kg Cap Strength: 1.32 C Lift Cond Lev (LCL): 909.32 mb = 919.81 m = 3017.72 ft Lev Free Conv (LFC): 834.32 mb = 1664.10 m = 5459.57 ft Wind level data Storm motion: 67 at 4 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 1000 85 350 3 0.5 -3.0 | 289 4 4.2 -1.4 1 1000 83 25 7 -3.0 -6.3 | 351 5 0.7 -4.8 2 975 305 15 12 -3.1 -11.6 | 357 10 0.6 -10.1 3 942 610 10 6 -1.0 -5.9 | 329 5 2.7 -4.4 4 925 771 335 3 1.3 -2.7 | 283 5 5.0 -1.2 5 910 914 265 1 1.0 0.1 | 251 5 4.7 1.6 6 850 1506 360 3 -0.0 -3.0 | 292 4 3.7 -1.5 7 789 2134 60 6 -5.2 -3.0 | 46 2 -1.5 -1.5 8 761 2438 80 7 -6.9 -1.2 | 96 3 -3.2 0.3 9 700 3152 75 4 -3.9 -1.0 | 162 1 -0.2 0.5 10 610 4267 25 8 -3.4 -7.3 | 357 6 0.3 -5.7 11 500 5880 40 3 -1.9 -2.3 | 293 2 1.8 -0.8 12 486 6096 75 4 -3.9 -1.0 | 162 1 -0.2 0.5 13 400 7590 120 7 -6.1 3.5 | 155 6 -2.4 5.0 14 366 8230 65 6 -5.4 -2.5 | 60 2 -1.7 -1.0 15 336 8839 125 11 -9.0 6.3 | 146 9 -5.3 7.8 16 323 9144 95 10 -10.0 0.9 | 111 7 -6.3 2.4 17 296 9754 85 8 -8.0 -0.7 | 101 4 -4.3 0.8 Wind Parameters Mean winds (0-6000m): 37.5 at 5.3 knts Storm direction: 67.5 at 4.0 knts Shear (0-3000m) pos: 1.3 neg: 1.5 tot: 2.8 10-3/s Storm rel Dir Shear (0-3000m): 144.4 deg Storm rel helicity (0-3000m) pos: 10.5 neg: -15.8 tot: -5.4 m^2/s^2 ave: -1.8 10^-3 m/s^2 rel: 0.05 Storm rel vorticity (0-3000m) horiz: 5.4 stream: 0.3 10^-3/s Energy-Hel index: 0.04 Bulk Rich Number: 251.80 Bulk Shear: 3.09 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 16 9 351 8| 0.0 1.8 1.8| 0.9 -6.1 -5.2 -10.4 -0.26| 10.2 -2.6 1000 9 6 329 5| 0.0 3.7 3.7| 1.6 -15.8 -14.2 -14.2 -0.52| 9.1 -4.7 1500 7 5 317 4| 1.1 2.5 3.6| 5.6 -15.8 -10.3 -6.8 -0.28| 7.3 -2.1 2000 15 5 321 4| 1.7 1.9 3.6| 8.4 -15.8 -7.4 -3.7 -0.07| 6.6 -0.5 2500 30 5 339 3| 1.6 1.5 3.1| 10.2 -15.8 -5.6 -2.2 0.03| 6.0 0.2 3000 40 5 350 2| 1.3 1.5 2.8| 10.5 -15.8 -5.4 -1.8 0.05| 5.4 0.3 4000 43 5 357 2| 1.0 0.9 1.9| 10.5 -17.2 -6.8 -1.7 -0.03| 4.7 -0.1 5000 38 6 355 3| 0.8 0.8 1.5| 10.5 -18.9 -8.5 -1.7 -0.06| 4.2 -0.2 6000 37 5 351 3| 0.8 0.6 1.4| 10.5 -20.2 -9.7 -1.6 -0.13| 3.9 -0.5 Wrote GIF file: /home/apache/climate/data/raob//SBTT/skewt/SBTT.skewt.20251012.00.gif