UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025100712.upa.cvt Date: 1200Z 7 OCT 25 Searching for VTBC... Searching the city database file for: VTBC ... Date:1200Z 7 OCT 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 1008 4 26.0 25.0 94 1.0 25.3 150 2 298.5 302.1 298.1 357.3 20.16 1 1000 76 27.6 24.1 81 3.5 25.0 185 4 300.8 304.3 298.2 357.4 19.23 2 996 112 27.4 23.5 79 3.9 24.5 187 5 300.9 304.3 297.8 355.6 18.61 3 927 744 21.8 21.5 98 0.3 21.6 196 5 301.4 304.7 297.4 353.5 17.68 4 925 763 21.8 21.3 97 0.5 21.5 195 5 301.6 304.8 297.3 353.2 17.50 5 850 1497 18.4 16.8 90 1.6 17.3 280 5 305.4 308.1 296.3 348.2 14.31 6 737 2710 11.6 10.4 92 1.2 10.9 344 5 310.7 312.8 295.3 343.8 10.82 7 700 3141 9.6 8.0 90 1.6 8.6 355 6 313.1 315.0 295.0 343.0 9.67 8 651 3741 6.0 5.4 96 0.6 5.6 5 6 315.6 317.3 295.0 342.8 8.68 9 613 4233 3.8 -1.2 70 5.0 1.1 2 7 318.6 319.7 293.6 336.9 5.73 10 601 4394 3.2 1.2 87 2.0 2.1 1 7 319.7 321.0 294.8 342.0 6.97 11 522 5529 -2.3 -6.7 72 4.4 -4.4 1 6 326.2 327.1 294.6 341.0 4.44 12 500 5870 -4.9 -7.4 83 2.5 -6.1 10 3 327.1 327.9 294.7 341.7 4.39 13 490 6028 -5.7 -10.1 71 4.4 -7.7 360 2 328.0 328.7 294.4 340.2 3.62 14 487 6076 -6.1 -7.7 88 1.6 -6.8 357 2 328.1 328.9 295.0 342.8 4.40 15 466 6420 -7.7 -12.0 71 4.3 -9.5 12 5 330.2 330.9 294.7 341.4 3.27 16 441 6846 -11.1 -12.0 93 0.9 -11.5 35 9 331.2 331.9 295.0 343.0 3.46 17 440 6863 -11.1 -12.0 93 0.9 -11.5 36 10 331.4 332.1 295.1 343.3 3.47 18 419 7238 -12.3 -17.0 68 4.7 -14.0 56 13 334.5 335.0 295.0 343.0 2.41 19 418 7256 -12.3 -17.3 66 5.0 -14.1 57 14 334.8 335.2 295.0 343.1 2.36 20 400 7590 -15.3 -19.3 71 4.0 -16.6 75 17 335.1 335.5 294.9 342.5 2.08 21 380 7976 -17.7 -20.9 76 3.2 -18.7 78 16 336.9 337.3 295.2 343.7 1.90 22 332 8977 -23.3 -29.3 58 6.0 -24.6 88 14 342.5 342.7 295.8 346.3 1.02 23 320 9246 -25.9 -30.9 63 5.0 -26.9 89 15 342.5 342.7 295.7 345.9 0.91 24 300 9710 -29.7 -40.7 34 11.0 -31.2 85 21 343.5 343.6 295.5 345.0 0.36 25 296 9805 -30.5 -39.5 41 9.0 -31.7 84 22 343.7 343.8 295.6 345.4 0.42 26 289 9975 -31.7 -46.7 21 15.0 -33.3 81 23 344.4 344.4 295.6 345.2 0.20 27 281 10172 -33.5 -40.5 49 7.0 -34.4 78 24 344.5 344.6 295.8 346.1 0.40 28 277 10272 -34.3 -46.3 29 12.0 -35.5 76 25 344.8 344.9 295.7 345.7 0.22 29 268 10502 -36.1 -46.1 35 10.0 -37.0 73 27 345.5 345.5 295.8 346.4 0.23 30 264 10606 -37.1 -44.1 48 7.0 -37.8 71 28 345.5 345.5 295.9 346.6 0.29 31 263 10632 -37.3 -40.1 75 2.8 -37.6 71 28 345.6 345.7 296.0 347.3 0.44 32 260 10711 -38.1 -44.1 53 6.0 -38.7 71 28 345.5 345.6 295.9 346.7 0.29 33 258 10764 -38.1 -41.4 71 3.3 -38.5 71 28 346.3 346.4 296.1 347.9 0.39 34 253 10899 -39.3 -45.3 53 6.0 -39.8 74 27 346.5 346.5 296.1 347.5 0.26 35 250 10980 -40.1 -46.1 53 6.0 -40.6 75 27 346.4 346.5 296.1 347.4 0.24 36 249 11007 -40.3 -45.2 59 4.9 -40.7 75 27 346.5 346.6 296.1 347.6 0.27 37 245 11117 -41.1 -51.1 33 10.0 -41.8 76 28 347.0 347.0 296.1 347.6 0.14 38 238 11313 -42.9 -46.8 65 3.9 -43.2 78 28 347.1 347.2 296.2 348.1 0.24 39 215 11989 -48.1 -55.1 44 7.0 -48.4 83 31 349.3 349.3 296.5 349.7 0.10 40 200 12460 -52.5 -57.4 55 4.9 -52.7 80 35 349.6 349.6 296.6 350.0 0.08 41 192 12722 -54.9 -56.8 79 1.9 -54.9 76 35 349.9 349.9 296.7 350.3 0.09 42 183 13027 -57.9 -67.9 27 10.0 -58.0 71 35 349.9 349.9 296.6 349.9 0.02 43 181 13096 -58.3 -75.3 10 17.0 -58.5 70 35 350.3 350.3 296.7 350.3 0.01 44 176 13271 -59.9 -64.0 59 4.1 -60.0 67 35 350.5 350.5 296.8 350.7 0.04 45 150 14250 -67.9 -75.9 31 8.0 -67.9 65 46 353.1 353.1 297.3 353.2 0.01 46 133 14963 -73.5 -80.5 33 7.0 -73.5 69 47 355.5 355.5 297.8 355.5 0.00 47 108 16158 -80.9 -85.9 43 5.0 -80.9 363.3 363.3 299.4 363.3 0.00 TRP WND Sounding variables and indices 1000-500 mb thick: 5794.00 m Freezing level: 555.04 mb = 5054.33 m = 16582.24 ft Wetbulb zero: 575.85 mb = 4738.44 m = 15545.89 ft Precipitable water: 2.50 inches Sfc-500 mean rel hum: 87.01 % Est. max temperature: 32.54 C = 90.58 F Sfc-Lift cond lev (LCL): 993.95 mb = 129.84 m = 425.98 ft T: 27.24 C 700-500 lapse rate: 5.31 C/km ThetaE index: 20.45 C Layer 996.0- 601.0 mb Conv cond level (CCL): 928.48 mb = 730.08 m = 2395.24 ft Mean mixing ratio: 18.10 g/kg Conv temperature: 28.94 C = 84.10 F Cap Strength: 0.19 C Lifted Index: -3.51 C Risk: Severe thunderstorms possible Lifted Index @300 mb: -3.73 C Lifted Index @700 mb: -2.20 C Showalter Index: -1.29 C Risk: Thunderstorms probable Total Totals Index: 45.00 C Risk: Scattered moderate thunderstorms Vertical Totals Index: 23.30 C Cross Totals Index: 21.70 C K Index: 38.50 Risk: > 80 % chance of thunderstorms Sweat Index: 214.60 Risk: None Energy Index: -1.34 Risk: Scattered severe thunderstorms Parcel Indices Parcel: using 100 mb layer CAPE (B+): 1450.99 J/kg Max Up Vert Vel: 53.87 m/s Conv Inhibition (B-): 0.34 J/kg Cap Strength: 0.19 C Lift Cond Lev (LCL): 931.89 mb = 697.83 m = 2289.45 ft Lev Free Conv (LFC): 916.89 mb = 839.47 m = 2754.14 ft Equ Level (EL): 136.89 mb = 14792.46 m = 48531.09 ft B at Equ Level: 1444.93 J/kg Wind level data Storm motion: 9 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 1008 4 150 2 -1.0 1.7 | 177 6 -0.3 6.1 1 1000 76 185 4 0.3 4.0 | 187 8 1.0 8.4 2 974 305 200 9 3.1 8.5 | 196 13 3.8 12.9 3 941 610 200 7 2.4 6.6 | 196 11 3.1 11.0 4 925 763 195 5 1.3 4.8 | 192 9 2.0 9.2 5 909 914 205 3 1.3 2.7 | 195 7 2.0 7.1 6 850 1497 280 5 4.9 -0.9 | 238 7 5.6 3.5 7 847 1524 280 5 4.9 -0.9 | 238 7 5.6 3.5 8 788 2134 325 6 3.4 -4.9 | 277 4 4.1 -0.5 9 708 3048 355 5 0.4 -5.0 | 297 1 1.1 -0.6 10 700 3141 355 6 0.5 -6.0 | 322 2 1.2 -1.6 11 657 3658 5 6 -0.5 -6.0 | 354 2 0.2 -1.6 12 587 4572 360 7 -0.0 -7.0 | 345 3 0.7 -2.6 13 565 4877 355 10 0.9 -10.0 | 344 6 1.6 -5.6 14 524 5486 360 6 -0.0 -6.0 | 336 2 0.7 -1.6 15 500 5870 10 3 -0.5 -3.0 | 187 1 0.2 1.5 16 486 6096 355 2 0.2 -2.0 | 200 3 0.9 2.4 17 400 7590 75 17 -16.4 -4.4 | 90 16 -15.7 0.0 18 398 7620 75 16 -15.5 -4.1 | 91 15 -14.8 0.3 19 324 9144 90 14 -14.0 0.0 | 108 14 -13.3 4.4 20 300 9710 85 21 -20.9 -1.8 | 97 20 -20.2 2.6 21 261 10668 70 28 -26.3 -9.6 | 79 26 -25.6 -5.2 22 250 10980 75 27 -26.1 -7.0 | 84 26 -25.4 -2.6 23 208 12192 85 32 -31.9 -2.8 | 93 31 -31.2 1.6 24 200 12460 80 35 -34.5 -6.1 | 87 34 -33.8 -1.7 25 163 13716 60 35 -30.3 -17.5 | 66 32 -29.6 -13.1 26 150 14250 65 46 -41.7 -19.4 | 70 44 -41.0 -15.0 27 127 15240 70 48 -45.1 -16.4 | 75 46 -44.4 -12.0 Wind Parameters Mean winds (0-6000m): 338.9 at 5.9 knts Storm direction: 8.9 at 4.5 knts Shear (0-3000m) pos: 1.2 neg: 0.0 tot: 1.2 10-3/s Storm rel Dir Shear (0-3000m): 118.6 deg Storm rel helicity (0-3000m) pos: 24.9 neg: -1.7 tot: 23.2 m^2/s^2 ave: 7.7 10^-3 m/s^2 rel: 0.48 Storm rel vorticity (0-3000m) horiz: 4.6 stream: 2.2 10^-3/s Energy-Hel index: 0.21 Bulk Rich Number: 75.89 Bulk Shear: 19.12 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 ------------------------------------------------------------------------------- 500 196 7 193 11| 6.8 0.0 6.8| 7.8 -0.3 7.5 15.0 0.33| 9.4 3.1 1000 198 6 194 10| 1.6 0.0 1.6| 9.8 -1.7 8.1 8.1 0.24| 7.5 1.8 1500 211 5 201 10| 2.2 0.0 2.2| 18.9 -1.7 17.3 11.5 0.42| 6.7 2.8 2000 232 5 212 9| 2.0 0.0 2.0| 23.3 -1.7 21.6 10.8 0.49| 5.9 2.9 2500 253 5 225 8| 1.6 0.0 1.6| 24.7 -1.7 23.0 9.2 0.49| 5.2 2.6 3000 273 5 236 7| 1.2 0.0 1.2| 24.9 -1.7 23.2 7.7 0.48| 4.6 2.2 4000 310 6 261 5| 1.0 0.0 1.0| 25.7 -1.7 23.9 6.0 0.50| 3.7 1.9 5000 332 6 284 4| 0.8 0.3 1.1| 25.7 -2.0 23.7 4.7 0.42| 3.4 1.5 6000 339 6 292 3| 0.1 0.3 0.4| 25.8 -2.4 23.4 3.9 0.31| 3.5 1.1 Wrote GIF file: /home/apache/climate/data/raob//VTBC/skewt/VTBC.skewt.20251007.12.gif