UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025121300.upa.cvt Date: 0000Z 13 DEC 25 Searching for VTBC... Searching the city database file for: VTBC ... Date:0000Z 13 DEC 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 1010 4 24.0 23.0 94 1.0 23.3 60 5 296.3 299.5 296.1 347.6 17.78 1 1009 13 26.2 22.1 78 4.1 23.3 58 5 298.6 301.6 296.1 347.6 16.83 2 1000 93 25.8 20.8 74 5.0 22.2 35 7 299.0 301.8 295.4 344.5 15.65 3 925 778 22.0 18.9 83 3.1 19.8 80 5 301.8 304.6 295.7 346.1 15.02 4 850 1509 17.0 14.4 85 2.6 15.3 80 10 304.0 306.2 294.4 340.3 12.23 5 837 1640 16.0 13.7 86 2.3 14.5 81 11 304.2 306.4 294.2 339.6 11.86 6 782 2214 14.6 6.6 59 8.0 9.8 308.7 310.2 292.4 332.7 7.84 7 770 2344 14.4 0.4 38 14.0 6.8 309.9 310.8 290.5 325.8 5.12 8 736 2723 11.2 1.2 50 10.0 5.8 310.4 311.5 291.2 328.0 5.68 TRP WND Sounding variables and indices Precipitable water: 1.30 inches Sfc-500 mean rel hum: 72.44 % Est. max temperature: 31.38 C = 88.48 F Sfc-Lift cond lev (LCL): 995.80 mb = 130.02 m = 426.56 ft T: 25.59 C ThetaE index: 20.30 C Layer 850.0- 736.0 mb Conv cond level (CCL): 867.72 mb = 1330.58 m = 4365.38 ft Mean mixing ratio: 15.34 g/kg Conv temperature: 31.15 C = 88.08 F Cap Strength: 1.82 C Parcel Indices Parcel: using 100 mb layer CAPE (B+): 7.73 J/kg Max Up Vert Vel: 3.93 m/s Conv Inhibition (B-): 53.53 J/kg Cap Strength: 1.82 C Lift Cond Lev (LCL): 905.81 mb = 959.28 m = 3147.21 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 103 at 6 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 1010 4 60 5 -4.3 -2.5 | 334 4 1.9 -3.9 1 1000 93 35 7 -4.0 -5.7 | 343 7 2.2 -7.2 2 976 305 40 8 -5.1 -6.1 | 352 8 1.1 -7.6 3 943 610 65 7 -6.3 -3.0 | 2 4 -0.1 -4.4 4 925 778 80 5 -4.9 -0.9 | 331 3 1.3 -2.3 5 911 914 80 5 -4.9 -0.9 | 331 3 1.3 -2.3 6 850 1509 80 10 -9.8 -1.7 | 49 5 -3.6 -3.2 7 848 1524 80 10 -9.8 -1.7 | 49 5 -3.6 -3.2 8 789 2134 85 14 -13.9 -1.2 | 71 8 -7.7 -2.6 Wind Parameters Mean winds (0-6000m): 72.9 at 8.5 knts Storm direction: 102.9 at 6.4 knts Shear (0-3000m) pos: 1.1 neg: 1.6 tot: 2.8 10-3/s Storm rel Dir Shear (0-3000m): 96.8 deg Storm rel helicity (0-3000m) pos: 12.4 neg: -1.5 tot: 10.9 m^2/s^2 ave: 5.2 10^-3 m/s^2 rel: 0.40 Storm rel vorticity (0-3000m) horiz: 4.7 stream: 1.9 10^-3/s Energy-Hel index: 0.00 Bulk Rich Number: 3.25 Bulk Shear: 2.38 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 43 7 350 7| 0.0 2.4 2.4| 5.0 0.0 5.0 10.0 0.43| 6.9 3.0 1000 56 7 351 5| 1.6 1.2 2.8| 5.8 -1.5 4.3 4.3 0.19| 5.7 1.1 1500 65 7 2 4| 1.1 2.2 3.2| 8.6 -1.5 7.1 4.7 0.35| 5.3 1.8 2000 71 8 21 4| 1.1 1.6 2.8| 11.7 -1.5 10.2 5.1 0.39| 4.8 1.9 2500 NO DATA | 1.1 1.6 2.8| | 3000 NO DATA | 1.1 1.6 2.8| | 4000 NO DATA | 1.1 1.6 2.8| | 5000 NO DATA | 1.1 1.6 2.8| | 6000 NO DATA | 1.1 1.6 2.8| | Wrote GIF file: /home/apache/climate/data/raob//VTBC/skewt/VTBC.skewt.20251213.00.gif