UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025121700.upa.cvt Date: 0000Z 17 DEC 25 Searching for VTBC... Searching the city database file for: VTBC ... Date:0000Z 17 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 22.0 89 2.0 22.6 40 4 296.3 299.3 295.4 344.5 16.70 1 1000 93 25.2 19.2 69 6.0 21.1 45 9 298.4 300.9 294.2 339.4 14.14 2 994 146 25.8 18.8 65 7.0 20.9 45 10 299.5 302.0 294.3 340.0 13.87 3 925 777 22.0 17.2 74 4.8 18.7 45 14 301.8 304.3 294.7 341.5 13.47 4 850 1505 16.4 13.8 85 2.6 14.7 70 11 303.3 305.5 293.9 338.2 11.75 5 849 1515 16.4 13.8 85 2.6 14.7 67 11 303.4 305.6 293.9 338.4 11.76 6 832 1688 18.2 9.2 56 9.0 12.6 57 10 307.1 308.7 292.7 333.8 8.81 7 717 2944 9.8 4.8 71 5.0 6.9 53 8 311.2 312.6 292.9 334.5 7.54 8 708 3049 10.2 3.2 62 7.0 6.2 55 8 312.8 314.1 292.8 334.0 6.82 9 700 3144 10.0 2.0 57 8.0 5.5 60 8 313.6 314.8 292.6 333.4 6.33 10 681 3373 9.6 -0.4 50 10.0 4.2 56 6 315.6 316.6 292.5 332.9 5.46 11 629 4025 3.8 -3.2 60 7.0 0.3 67 2 316.2 317.1 292.2 331.6 4.81 12 609 4287 2.6 -5.4 56 8.0 -1.3 80 2 317.8 318.6 292.1 331.3 4.20 13 603 4367 3.0 -12.0 32 15.0 -3.3 84 1 319.1 319.6 291.0 327.5 2.53 14 567 4863 -0.9 -9.9 50 9.0 -4.8 176 3 320.2 320.8 291.9 330.7 3.18 15 543 5207 -2.1 -19.1 26 17.0 -8.0 206 7 322.8 323.1 291.2 328.1 1.55 16 542 5222 -1.7 -24.7 15 23.0 -8.7 207 7 323.4 323.6 290.8 326.8 0.95 17 503 5813 -5.3 -51.3 1 46.0 -12.8 229 7 326.0 326.0 290.6 326.3 0.07 18 500 5860 -5.7 -51.7 1 46.0 -13.0 230 6 326.1 326.1 290.7 326.3 0.06 19 461 6489 -10.1 -50.1 2 40.0 -16.2 234 7 328.3 328.3 291.3 328.6 0.08 20 400 7570 -14.9 -59.9 1 45.0 -20.0 245 10 335.6 335.6 293.3 335.7 0.03 21 387 7820 -15.7 -59.7 1 44.0 -20.7 337.8 337.8 293.8 337.9 0.03 22 362 8320 -19.3 -59.3 2 40.0 -23.5 339.5 339.5 294.2 339.6 0.04 23 356 8444 -19.3 -55.3 3 36.0 -23.5 341.1 341.1 294.6 341.3 0.06 TRP WND Sounding variables and indices 1000-500 mb thick: 5767.00 m Freezing level: 575.31 mb = 4748.40 m = 15578.56 ft Wetbulb zero: 625.66 mb = 4068.21 m = 13346.97 ft Precipitable water: 1.60 inches Sfc-500 mean rel hum: 54.59 % Est. max temperature: 30.84 C = 87.50 F Sfc-Lift cond lev (LCL): 981.32 mb = 258.70 m = 848.75 ft T: 25.12 C 700-500 lapse rate: 5.78 C/km ThetaE index: 6.99 C Layer 708.0- 567.0 mb Conv cond level (CCL): 786.85 mb = 2159.05 m = 7083.40 ft Mean mixing ratio: 13.79 g/kg Conv temperature: 36.38 C = 97.48 F Cap Strength: 3.59 C Lifted Index: 0.73 C Risk: Showers probable Lifted Index @700 mb: 2.07 C Showalter Index: 1.84 C Risk: Showers probable Total Totals Index: 41.60 C Risk: None Vertical Totals Index: 22.10 C Cross Totals Index: 19.50 C K Index: 27.90 Risk: 40-60 % chance of thunderstorms Sweat Index: 193.60 Risk: None Energy Index: -2.15 Risk: Severe Thunderstorms probable Parcel Indices Parcel: using 100 mb layer CAPE (B+): 11.74 J/kg Max Up Vert Vel: 4.85 m/s Conv Inhibition (B-): 402.85 J/kg Cap Strength: 3.42 C Lift Cond Lev (LCL): 884.38 mb = 1163.61 m = 3817.58 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 86 at 5 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 40 4 -2.6 -3.1 | 312 4 2.9 -2.6 1 1000 93 45 9 -6.4 -6.4 | 8 6 -0.9 -5.9 2 976 305 45 14 -9.9 -9.9 | 25 10 -4.4 -9.5 3 943 610 45 14 -9.9 -9.9 | 25 10 -4.4 -9.5 4 925 777 45 14 -9.9 -9.9 | 25 10 -4.4 -9.5 5 910 914 50 14 -10.7 -9.0 | 31 10 -5.2 -8.6 6 850 1505 70 11 -10.3 -3.8 | 55 6 -4.9 -3.3 7 848 1524 65 11 -10.0 -4.6 | 47 6 -4.5 -4.2 8 789 2134 35 6 -3.4 -4.9 | 336 5 2.0 -4.5 9 708 3048 55 8 -6.6 -4.6 | 14 4 -1.1 -4.2 10 700 3144 60 8 -6.9 -4.0 | 22 4 -1.4 -3.6 11 657 3658 50 3 -2.3 -1.9 | 295 4 3.2 -1.5 12 586 4572 95 1 -1.0 0.1 | 264 5 4.5 0.5 13 565 4877 185 3 0.3 3.0 | 239 7 5.7 3.4 14 524 5486 225 10 7.1 7.1 | 239 15 12.6 7.5 15 500 5860 230 6 4.6 3.9 | 247 11 10.1 4.3 16 485 6096 230 6 4.6 3.9 | 247 11 10.1 4.3 17 400 7570 245 10 9.1 4.2 | 252 15 14.5 4.6 18 397 7620 245 11 10.0 4.6 | 252 16 15.4 5.1 Wind Parameters Mean winds (0-6000m): 55.6 at 7.3 knts Storm direction: 85.6 at 5.5 knts Shear (0-3000m) pos: 1.6 neg: 1.0 tot: 2.6 10-3/s Storm rel Dir Shear (0-3000m): 60.0 deg Storm rel helicity (0-3000m) pos: 23.3 neg: -10.1 tot: 13.1 m^2/s^2 ave: 4.4 10^-3 m/s^2 rel: 0.27 Storm rel vorticity (0-3000m) horiz: 4.6 stream: 1.2 10^-3/s Energy-Hel index: 0.00 Bulk Rich Number: 4.15 Bulk Shear: 2.83 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 45 12 19 8| 10.3 0.0 10.3| 9.9 0.0 9.9 19.9 0.70| 10.6 7.4 1000 46 13 24 9| 5.0 0.0 5.0| 14.5 0.0 14.5 14.5 0.72| 6.4 4.6 1500 51 13 29 9| 2.7 0.0 2.7| 20.0 0.0 20.0 13.3 0.69| 5.8 4.0 2000 52 12 29 8| 2.0 1.5 3.5| 20.0 -8.7 11.2 5.6 0.24| 5.9 1.4 2500 50 11 23 7| 1.6 1.2 2.8| 21.2 -10.1 11.1 4.4 0.21| 5.2 1.1 3000 50 10 21 6| 1.6 1.0 2.6| 23.3 -10.1 13.1 4.4 0.27| 4.6 1.2 4000 51 9 15 5| 1.1 1.1 2.1| 23.8 -14.9 8.9 2.2 0.06| 4.3 0.3 5000 53 7 5 4| 0.9 0.9 1.8| 23.8 -19.4 4.4 0.9 -0.04| 4.1 -0.2 6000 56 7 9 4| 0.6 0.7 1.3| 34.8 -19.9 14.8 2.5 0.03| 4.4 0.1 Wrote GIF file: /home/apache/climate/data/raob//VTBC/skewt/VTBC.skewt.20251217.00.gif