UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025121500.upa.cvt Date: 0000Z 15 DEC 25 Searching for VTBC... Searching the city database file for: VTBC ... Date:0000Z 15 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 1011 4 24.0 23.0 94 1.0 23.3 50 5 296.2 299.4 296.1 347.4 17.76 1 1000 101 23.0 18.0 73 5.0 19.6 35 14 296.1 298.5 292.7 333.9 13.09 2 936 676 20.2 17.6 85 2.6 18.4 62 14 299.0 301.4 294.0 338.7 13.65 3 926 769 20.8 17.6 82 3.2 18.6 65 13 300.5 303.0 294.6 341.0 13.80 4 925 778 20.8 17.6 82 3.2 18.6 65 13 300.6 303.1 294.6 341.1 13.82 5 850 1508 17.6 14.5 82 3.1 15.5 85 11 304.6 306.9 294.6 341.3 12.31 6 828 1732 17.0 12.9 77 4.1 14.3 98 9 306.2 308.4 294.4 340.4 11.37 7 774 2304 12.6 10.6 88 2.0 11.3 120 6 307.5 309.4 294.1 339.0 10.43 8 760 2458 13.2 8.3 72 4.9 10.2 116 6 309.7 311.4 293.7 337.5 9.08 9 700 3146 8.8 5.4 79 3.4 6.8 95 6 312.2 313.8 293.6 337.2 8.06 10 678 3410 8.0 3.0 71 5.0 5.1 98 7 314.2 315.5 293.4 336.2 7.02 11 590 4541 0.0 -2.4 84 2.4 -1.2 147 6 317.6 318.7 293.1 335.1 5.44 12 584 4623 0.0 -2.7 82 2.7 -1.4 151 6 318.6 319.6 293.3 335.8 5.38 13 576 4734 0.8 -11.2 40 12.0 -4.3 152 6 320.8 321.3 291.7 330.1 2.82 14 545 5177 -1.1 -15.1 34 14.0 -6.5 82 3 323.6 324.1 292.0 331.0 2.17 15 500 5860 -5.5 -13.5 53 8.0 -8.7 270 3 326.3 326.9 293.2 335.5 2.70 16 445 6762 -11.3 -16.2 67 4.9 -13.1 273 8 330.1 330.6 293.9 338.5 2.43 17 429 7041 -12.7 -21.7 47 9.0 -15.5 272 9 331.8 332.1 293.7 337.4 1.57 18 400 7570 -16.5 -24.5 50 8.0 -18.7 270 12 333.5 333.8 293.9 338.3 1.31 19 391 7741 -17.9 -24.9 54 7.0 -19.8 333.9 334.2 294.0 338.6 1.30 20 370 8152 -19.7 -44.7 9 25.0 -23.4 336.8 336.9 293.7 337.6 0.19 21 360 8355 -21.1 -32.1 37 11.0 -23.4 337.6 337.7 294.4 340.3 0.72 22 344 8689 -22.9 -35.9 29 13.0 -25.2 339.6 339.7 294.7 341.6 0.52 TRP WND Sounding variables and indices 1000-500 mb thick: 5759.00 m Freezing level: 562.95 mb = 4920.77 m = 16144.06 ft Wetbulb zero: 606.84 mb = 4312.40 m = 14148.13 ft Precipitable water: 1.93 inches Sfc-500 mean rel hum: 71.00 % Est. max temperature: 31.78 C = 89.20 F Sfc-Lift cond lev (LCL): 996.78 mb = 129.01 m = 423.25 ft T: 22.86 C 700-500 lapse rate: 5.27 C/km ThetaE index: 13.58 C Layer 1000.0- 936.0 mb Conv cond level (CCL): 806.70 mb = 1953.43 m = 6408.83 ft Mean mixing ratio: 13.67 g/kg Conv temperature: 34.54 C = 94.17 F Cap Strength: 3.39 C Lifted Index: 2.16 C Risk: None Lifted Index @700 mb: 1.81 C Showalter Index: 0.75 C Risk: Thunderstorms probable Total Totals Index: 43.10 C Risk: None Vertical Totals Index: 23.10 C Cross Totals Index: 20.00 C K Index: 34.20 Risk: 60-80 % chance of thunderstorms Sweat Index: 199.00 Risk: None Energy Index: -1.15 Risk: Scattered severe thunderstorms Parcel Indices Parcel: using 100 mb layer CAPE (B+): 18.08 J/kg Max Up Vert Vel: 6.01 m/s Conv Inhibition (B-): 637.43 J/kg Cap Strength: 3.32 C Lift Cond Lev (LCL): 911.96 mb = 900.54 m = 2954.50 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 121 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 1011 4 50 5 -3.8 -3.2 | 351 6 0.9 -6.0 1 1000 101 35 14 -8.0 -11.5 | 13 15 -3.3 -14.3 2 977 305 45 15 -10.6 -10.6 | 24 15 -5.9 -13.4 3 943 610 60 14 -12.1 -7.0 | 37 12 -7.4 -9.8 4 925 778 65 13 -11.8 -5.5 | 40 11 -7.0 -8.3 5 911 914 70 14 -13.2 -4.8 | 48 11 -8.4 -7.6 6 850 1508 85 11 -11.0 -1.0 | 59 7 -6.2 -3.8 7 848 1524 85 11 -11.0 -1.0 | 59 7 -6.2 -3.8 8 789 2134 125 6 -4.9 3.4 | 164 1 -0.2 0.6 9 708 3048 100 6 -5.9 1.0 | 33 2 -1.2 -1.8 10 700 3146 95 6 -6.0 0.5 | 28 3 -1.2 -2.3 11 657 3658 100 7 -6.9 1.2 | 53 3 -2.1 -1.6 12 587 4572 150 6 -3.0 5.2 | 216 3 1.7 2.4 13 565 4877 155 5 -2.1 4.5 | 237 3 2.6 1.7 14 524 5486 0 0 -0.0 -0.0 | 301 6 4.7 -2.8 15 500 5860 270 3 3.0 -0.0 | 290 8 7.7 -2.8 16 485 6096 275 5 5.0 -0.4 | 289 10 9.7 -3.3 17 400 7570 270 12 12.0 -0.0 | 280 17 16.7 -2.8 18 397 7620 270 12 12.0 -0.0 | 280 17 16.7 -2.8 Wind Parameters Mean winds (0-6000m): 90.9 at 7.4 knts Storm direction: 120.9 at 5.5 knts Shear (0-3000m) pos: 1.2 neg: 0.3 tot: 1.5 10-3/s Storm rel Dir Shear (0-3000m): 43.0 deg Storm rel helicity (0-3000m) pos: 44.7 neg: -0.3 tot: 44.4 m^2/s^2 ave: 14.8 10^-3 m/s^2 rel: 0.48 Storm rel vorticity (0-3000m) horiz: 5.7 stream: 2.7 10^-3/s Energy-Hel index: 0.01 Bulk Rich Number: 1.34 Bulk Shear: 13.51 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 44 14 21 13| 9.6 0.0 9.6| 26.8 0.0 26.8 53.6 0.59| 15.1 8.9 1000 54 14 30 13| 4.7 0.0 4.7| 37.7 0.0 37.7 37.7 0.63| 10.1 6.3 1500 62 13 37 11| 2.6 0.0 2.6| 41.2 0.0 41.2 27.4 0.59| 8.0 4.7 2000 68 12 41 10| 1.8 0.0 1.8| 44.5 0.0 44.5 22.3 0.56| 7.6 4.3 2500 73 11 44 8| 1.4 0.2 1.6| 44.7 -0.1 44.6 17.9 0.52| 6.6 3.4 3000 77 10 45 7| 1.2 0.3 1.5| 44.7 -0.3 44.4 14.8 0.48| 5.7 2.7 4000 82 9 46 6| 1.1 0.3 1.4| 46.2 -0.4 45.8 11.4 0.50| 4.8 2.4 5000 89 8 52 5| 1.1 0.5 1.6| 49.1 -0.4 48.7 9.7 0.55| 4.6 2.5 6000 91 7 44 4| 0.9 0.9 1.8| 50.3 -8.1 42.2 7.0 0.39| 4.7 1.8 Wrote GIF file: /home/apache/climate/data/raob//VTBC/skewt/VTBC.skewt.20251215.00.gif