UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025121200.upa.cvt Date: 0000Z 12 DEC 25 Searching for VTBC... Searching the city database file for: VTBC ... Date:0000Z 12 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 1009 4 23.0 21.0 89 2.0 21.6 30 4 295.4 298.2 294.4 340.5 15.70 1 1000 84 23.6 21.3 87 2.3 22.0 35 9 296.8 299.7 295.1 343.4 16.15 2 994 137 24.4 20.6 79 3.8 21.7 36 11 298.1 300.9 295.1 343.2 15.55 3 929 727 20.0 19.2 95 0.8 19.5 49 19 299.4 302.2 295.3 343.9 15.25 4 925 764 20.0 19.0 94 1.0 19.3 50 19 299.8 302.5 295.3 344.0 15.12 5 866 1334 17.6 17.6 100 0.0 17.6 78 18 303.0 305.7 295.9 346.7 14.78 6 850 1494 16.8 16.6 99 0.2 16.7 85 18 303.7 306.4 295.7 345.7 14.12 7 700 3130 8.6 8.6 100 0.0 8.6 130 18 312.0 313.9 295.0 343.0 10.08 8 591 4516 1.4 1.4 100 0.0 1.4 135 15 319.1 320.5 294.8 342.0 7.19 9 569 4822 0.6 -3.0 77 3.6 -1.3 116 11 321.7 322.7 294.1 339.2 5.40 10 543 5196 -2.3 -2.5 99 0.2 -2.4 110 10 322.5 323.7 294.7 341.6 5.87 11 511 5678 -4.3 -6.8 83 2.5 -5.5 113 10 325.8 326.7 294.5 340.7 4.50 12 500 5850 -5.7 -8.0 84 2.3 -6.8 115 10 326.1 326.9 294.3 340.1 4.19 13 462 6464 -11.1 -12.3 91 1.2 -11.6 132 8 326.8 327.5 293.7 337.7 3.22 14 461 6481 -10.1 -19.1 48 9.0 -13.1 133 8 328.3 328.6 293.0 334.6 1.83 15 456 6565 -8.7 -21.7 34 13.0 -12.9 137 8 331.0 331.3 293.4 336.3 1.48 16 419 7217 -12.3 -28.3 25 16.0 -16.5 168 5 334.5 334.7 293.8 337.8 0.89 17 406 7457 -14.3 -31.3 22 17.0 -18.3 180 4 335.0 335.1 293.7 337.5 0.69 18 400 7570 -15.3 -30.3 27 15.0 -18.8 185 3 335.1 335.3 293.8 338.0 0.77 19 387 7818 -17.5 -30.5 31 13.0 -20.5 200 3 335.4 335.6 293.9 338.3 0.78 20 374 8073 -19.9 -24.0 70 4.1 -21.0 227 4 335.5 335.8 294.5 340.8 1.47 21 373 8093 -20.3 -24.8 67 4.5 -21.5 229 4 335.2 335.5 294.4 340.2 1.37 22 367 8213 -19.9 -34.9 25 15.0 -22.8 241 4 337.3 337.4 294.1 339.4 0.54 23 333 8928 -23.9 -46.9 10 23.0 -26.8 316 5 341.4 341.4 294.8 342.0 0.17 24 300 9680 -29.9 -47.9 16 18.0 -31.8 200 5 343.2 343.3 295.3 343.9 0.17 25 297 9751 -30.5 -49.5 14 19.0 -32.4 203 5 343.4 343.4 295.3 344.0 0.14 26 292 9872 -31.1 -40.1 41 9.0 -32.3 208 6 344.2 344.3 295.7 345.8 0.40 27 288 9969 -31.7 -47.7 19 16.0 -33.3 212 7 344.7 344.7 295.6 345.4 0.18 28 250 10950 -40.3 -49.3 38 9.0 -40.9 240 16 346.2 346.2 295.9 346.9 0.17 29 244 11115 -41.9 -48.9 46 7.0 -42.4 238 18 346.2 346.2 296.0 346.9 0.18 30 237 11311 -43.7 -52.7 36 9.0 -44.2 236 20 346.3 346.4 295.9 346.9 0.12 31 222 11747 -47.3 -49.6 77 2.3 -47.4 230 24 347.3 347.4 296.2 348.1 0.19 32 216 11928 -48.1 -60.1 24 12.0 -48.5 228 26 348.8 348.9 296.4 349.1 0.05 33 213 12020 -48.9 -60.9 23 12.0 -49.3 227 27 349.0 349.0 296.4 349.2 0.05 34 200 12430 -52.9 -58.9 48 6.0 -53.1 225 31 349.0 349.0 296.5 349.3 0.07 35 189 12792 -56.3 -59.5 67 3.2 -56.4 220 30 349.2 349.2 296.5 349.5 0.07 36 174 13311 -61.3 -67.3 45 6.0 -61.4 212 29 349.3 349.3 296.5 349.4 0.03 37 173 13347 -61.7 -69.7 34 8.0 -61.8 211 29 349.2 349.2 296.5 349.3 0.02 38 170 13455 -61.3 -78.3 9 17.0 -61.4 209 29 351.7 351.7 297.0 351.7 0.01 39 150 14220 -67.9 -76.9 27 9.0 -67.9 180 21 353.1 353.1 297.3 353.2 0.01 40 132 14978 -74.1 -80.1 39 6.0 -74.1 158 33 355.2 355.2 297.7 355.2 0.00 41 112 15928 -77.7 -90.7 11 13.0 -77.7 117 29 365.6 365.6 299.8 365.6 0.00 42 100 16570 -81.9 -90.9 20 9.0 -81.9 65 21 369.5 369.5 300.5 369.5 0.00 43 89 17215 -87.3 -93.3 32 6.0 -87.3 60 22 371.2 371.2 300.8 371.2 0.00 44 77 18009 -85.3 -93.3 22 8.0 -85.3 75 27 391.1 391.1 303.9 391.1 0.00 45 71 18460 -81.9 -90.9 20 9.0 -81.9 90 18 407.5 407.5 306.2 407.5 0.00 46 70 18540 -79.9 -89.9 17 10.0 -79.9 95 13 413.4 413.4 306.9 413.5 0.00 47 62 19242 -69.9 -88.9 5 19.0 -70.0 160 10 450.2 450.2 310.8 450.2 0.00 48 56 19850 -67.3 -88.3 4 21.0 -67.5 201 7 469.4 469.4 312.6 469.4 0.00 49 54 20068 -69.1 -89.1 4 20.0 -69.2 161 6 470.2 470.2 312.7 470.2 0.00 50 50 20530 -66.3 -89.3 3 23.0 -66.5 75 4 487.2 487.2 314.0 487.3 0.00 51 49 20653 -66.1 -89.1 3 23.0 -66.4 73 5 490.5 490.5 314.2 490.6 0.00 52 42 21580 -69.7 -90.7 3 21.0 -69.9 63 17 503.7 503.7 315.2 503.8 0.00 53 30 23630 -60.7 -87.7 2 27.0 -61.6 105 42 579.2 579.2 319.6 579.2 0.01 54 26 24527 -57.7 -85.7 2 28.0 -59.0 109 40 611.9 611.9 321.2 611.9 0.01 TRP 89 17215 -87.3 -93.3 32 6.0 -87.3 60 22 371.2 371.2 300.8 371.2 0.00 WND Sounding variables and indices 1000-500 mb thick: 5766.00 m Freezing level: 563.62 mb = 4899.22 m = 16073.35 ft Wetbulb zero: 579.59 mb = 4672.96 m = 15331.06 ft Precipitable water: 2.34 inches Sfc-500 mean rel hum: 95.18 % Est. max temperature: 30.93 C = 87.68 F Sfc-Lift cond lev (LCL): 980.25 mb = 258.29 m = 847.39 ft T: 23.49 C 700-500 lapse rate: 5.26 C/km ThetaE index: 7.55 C Layer 850.0- 543.0 mb Conv cond level (CCL): 894.58 mb = 1053.08 m = 3454.95 ft Mean mixing ratio: 15.41 g/kg Conv temperature: 29.00 C = 84.21 F Cap Strength: 0.76 C Lifted Index: -0.39 C Risk: Thunderstorms probable Lifted Index @300 mb: 2.07 C Lifted Index @700 mb: -0.15 C Showalter Index: -1.15 C Risk: Thunderstorms probable Total Totals Index: 44.80 C Risk: Scattered moderate thunderstorms Vertical Totals Index: 22.50 C Cross Totals Index: 22.30 C K Index: 39.10 Risk: > 80 % chance of thunderstorms Sweat Index: 245.20 Risk: None Energy Index: -1.19 Risk: Scattered severe thunderstorms Parcel Indices Parcel: using 100 mb layer CAPE (B+): 66.06 J/kg Max Up Vert Vel: 11.49 m/s Conv Inhibition (B-): 32.60 J/kg Cap Strength: 0.77 C Lift Cond Lev (LCL): 930.19 mb = 715.51 m = 2347.44 ft Lev Free Conv (LFC): 725.19 mb = 2832.13 m = 9291.64 ft Equ Level (EL): 575.19 mb = 4734.46 m = 15532.82 ft B at Equ Level: 30.99 J/kg Max Parcel Lev (MPL): 345.19 mb = 8663.35 m = 28422.71 ft Wind level data Storm motion: 133 at 12 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 1009 4 30 4 -2.0 -3.5 | 330 13 6.7 -11.6 1 1000 84 35 9 -5.2 -7.4 | 347 16 3.5 -15.5 2 975 305 40 18 -11.6 -13.8 | 8 22 -2.9 -21.9 3 942 610 45 20 -14.1 -14.1 | 14 23 -5.5 -22.3 4 925 764 50 19 -14.6 -12.2 | 16 21 -5.9 -20.3 5 909 914 60 17 -14.7 -8.5 | 20 18 -6.0 -16.6 6 850 1494 85 18 -17.9 -1.6 | 44 13 -9.3 -9.7 7 847 1524 85 18 -17.9 -1.6 | 44 13 -9.3 -9.7 8 788 2134 105 21 -20.3 5.4 | 77 12 -11.6 -2.7 9 707 3048 125 17 -13.9 9.8 | 107 6 -5.3 1.6 10 700 3130 130 18 -13.8 11.6 | 124 6 -5.1 3.5 11 656 3658 130 17 -13.0 10.9 | 123 5 -4.3 2.8 12 586 4572 135 15 -10.6 10.6 | 142 3 -1.9 2.5 13 564 4877 110 10 -9.4 3.4 | 9 5 -0.7 -4.7 14 523 5486 110 10 -9.4 3.4 | 9 5 -0.7 -4.7 15 500 5850 115 10 -9.1 4.2 | 6 4 -0.4 -3.9 16 484 6096 115 10 -9.1 4.2 | 6 4 -0.4 -3.9 17 400 7570 185 3 0.3 3.0 | 300 10 8.9 -5.1 18 397 7620 180 3 0.0 3.0 | 301 10 8.7 -5.1 19 323 9144 340 5 1.7 -4.7 | 321 16 10.4 -12.8 20 300 9680 200 5 1.7 4.7 | 288 11 10.4 -3.4 21 260 10668 240 12 10.4 6.0 | 276 19 19.1 -2.1 22 250 10950 240 16 13.9 8.0 | 270 23 22.5 -0.1 23 207 12192 225 29 20.5 20.5 | 247 32 29.2 12.4 24 200 12430 225 31 21.9 21.9 | 246 34 30.6 13.8 25 163 13716 205 28 11.8 25.4 | 230 27 20.5 17.3 26 150 14220 180 21 0.0 21.0 | 214 16 8.7 12.9 27 126 15240 150 37 -18.5 32.0 | 158 26 -9.8 23.9 28 102 16459 90 22 -22.0 0.0 | 59 16 -13.3 -8.1 29 100 16570 65 21 -19.0 -8.9 | 31 20 -10.4 -17.0 30 89 17215 60 22 -19.1 -11.0 | 29 22 -10.4 -19.1 31 73 18288 80 29 -28.6 -5.0 | 57 24 -19.9 -13.1 32 70 18540 95 13 -13.0 1.1 | 32 8 -4.3 -7.0 33 56 19812 210 7 3.5 6.1 | 280 12 12.2 -2.0 34 50 20530 75 4 -3.9 -1.0 | 332 10 4.8 -9.1 35 44 21336 60 13 -11.3 -6.5 | 10 15 -2.6 -14.6 36 34 22860 80 36 -35.5 -6.3 | 62 30 -26.8 -14.4 37 30 23630 105 42 -40.6 10.9 | 95 32 -31.9 2.8 38 25 24384 110 39 -36.6 13.3 | 101 28 -28.0 5.2 39 21 24994 105 32 -30.9 8.3 | 90 22 -22.2 0.2 Wind Parameters Mean winds (0-6000m): 103.1 at 15.8 knts Storm direction: 133.1 at 11.9 knts Shear (0-3000m) pos: 3.1 neg: 0.0 tot: 3.1 10-3/s Storm rel Dir Shear (0-3000m): 135.2 deg Storm rel helicity (0-3000m) pos: 136.0 neg: 0.0 tot: 136.0 m^2/s^2 ave: 45.3 10^-3 m/s^2 rel: 0.75 Storm rel vorticity (0-3000m) horiz: 7.7 stream: 5.7 10^-3/s Energy-Hel index: 0.05 Bulk Rich Number: 1.96 Bulk Shear: 33.65 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 40 14 2 19| 15.9 0.0 15.9| 58.7 0.0 58.7 117.4 0.80| 16.3 13.0 1000 46 17 10 20| 7.2 0.0 7.2| 80.5 0.0 80.5 80.5 0.71| 12.1 8.6 1500 56 17 17 18| 5.5 0.0 5.5|102.3 0.0 102.3 68.2 0.74| 10.3 7.6 2000 66 17 26 17| 5.0 0.0 5.0|121.2 0.0 121.2 60.6 0.77| 9.2 7.1 2500 76 18 35 15| 4.0 0.0 4.0|131.4 0.0 131.4 52.6 0.77| 8.4 6.4 3000 83 18 42 14| 3.1 0.0 3.1|136.0 0.0 136.0 45.3 0.75| 7.7 5.7 4000 96 18 55 11| 2.3 0.0 2.3|139.5 -0.1 139.4 34.9 0.74| 6.2 4.6 5000 102 17 60 9| 1.7 0.8 2.5|140.3 -4.3 136.0 27.2 0.53| 5.9 3.1 6000 103 16 56 8| 1.5 0.6 2.1|140.3 -4.6 135.7 22.6 0.51| 5.0 2.6 Wrote GIF file: /home/apache/climate/data/raob//VTBC/skewt/VTBC.skewt.20251212.00.gif