UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025101600.upa.cvt Date: 0000Z 16 OCT 25 Searching for VTBC... Searching the city database file for: VTBC ... Date:0000Z 16 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 1009 4 24.0 23.2 95 0.8 23.5 20 3 296.4 299.6 296.3 348.4 18.02 1 1005 39 23.8 23.2 96 0.6 23.4 22 4 296.5 299.8 296.4 348.8 18.09 2 1001 75 25.6 22.9 85 2.7 23.6 24 5 298.7 301.9 296.8 350.6 17.83 3 1000 84 25.6 22.9 85 2.7 23.6 25 5 298.8 302.0 296.8 350.8 17.85 4 989 182 26.2 23.1 83 3.1 23.9 29 8 300.3 303.6 297.5 354.0 18.28 5 984 227 26.0 23.0 84 3.0 23.8 31 9 300.5 303.9 297.5 354.2 18.26 6 925 771 23.4 20.1 82 3.3 21.1 55 12 303.2 306.2 296.9 351.3 16.22 7 850 1506 19.2 15.5 79 3.7 16.7 95 12 306.3 308.7 295.7 345.7 13.14 8 825 1763 17.8 13.3 75 4.5 14.8 97 11 307.4 309.6 295.0 342.8 11.72 9 776 2284 13.8 12.6 92 1.2 13.0 96 10 308.5 310.8 295.4 344.6 11.90 10 731 2788 12.2 7.9 75 4.3 9.5 82 9 312.1 313.8 294.4 340.5 9.19 11 713 2997 12.8 4.8 58 8.0 8.0 76 8 315.0 316.5 294.0 338.8 7.59 12 700 3152 11.6 4.6 62 7.0 7.5 85 7 315.3 316.8 294.1 339.3 7.62 13 600 4423 2.6 -1.1 77 3.7 0.6 90 11 319.1 320.3 293.9 338.0 5.89 14 500 5880 -5.5 -7.7 84 2.2 -6.5 85 9 326.3 327.2 294.5 340.6 4.29 15 457 6582 -9.3 -12.3 79 3.0 -10.5 83 9 330.1 330.7 294.6 341.2 3.26 16 445 6787 -10.7 -12.5 87 1.8 -11.5 83 9 330.8 331.5 294.8 342.1 3.29 17 430 7051 -12.3 -16.9 69 4.6 -14.0 82 9 332.1 332.5 294.4 340.3 2.37 18 400 7600 -16.5 -19.3 79 2.8 -17.4 80 9 333.5 334.0 294.5 340.9 2.08 19 393 7732 -17.5 -19.6 84 2.1 -18.2 86 10 333.9 334.3 294.6 341.2 2.06 20 387 7848 -16.7 -25.7 46 9.0 -19.1 86 9 336.4 336.7 294.6 340.9 1.22 21 344 8721 -22.9 -28.9 58 6.0 -24.3 92 7 339.6 339.8 295.1 343.4 1.02 22 331 9002 -25.3 -33.3 47 8.0 -26.8 94 6 340.0 340.2 295.0 342.7 0.70 23 327 9091 -25.5 -38.5 29 13.0 -27.6 95 6 340.9 341.0 295.0 342.6 0.42 24 324 9157 -25.7 -30.6 63 4.9 -26.7 95 6 341.6 341.8 295.5 345.0 0.92 25 311 9453 -27.9 -34.9 51 7.0 -29.1 71 7 342.5 342.6 295.5 345.0 0.63 26 300 9710 -30.3 -35.3 62 5.0 -31.1 50 7 342.7 342.8 295.6 345.1 0.63 27 285 10073 -33.5 -37.6 67 4.1 -34.1 50 8 343.2 343.3 295.6 345.2 0.53 28 282 10147 -34.1 -40.1 55 6.0 -34.8 50 8 343.3 343.4 295.5 345.0 0.41 29 279 10222 -34.5 -37.3 76 2.8 -34.9 50 9 343.8 343.9 295.7 346.0 0.56 30 267 10528 -36.9 -43.9 48 7.0 -37.6 50 10 344.7 344.7 295.7 345.8 0.29 31 260 10711 -38.3 -41.5 72 3.2 -38.7 53 10 345.2 345.3 295.9 346.8 0.39 32 254 10871 -39.5 -43.6 65 4.1 -39.9 66 8 345.8 345.8 296.0 347.0 0.32 33 250 10980 -39.9 -45.9 53 6.0 -40.4 75 7 346.7 346.8 296.1 347.8 0.25 34 249 11007 -40.1 -54.1 21 14.0 -40.9 74 7 346.8 346.9 296.0 347.3 0.10 35 248 11035 -40.3 -46.3 53 6.0 -40.8 74 7 346.9 347.0 296.2 347.9 0.24 36 203 12364 -50.9 -61.9 26 11.0 -51.2 56 9 350.7 350.7 296.8 350.9 0.05 37 200 12460 -51.7 -60.7 33 9.0 -52.0 60 9 350.9 350.9 296.9 351.1 0.05 38 182 13064 -57.3 -63.3 46 6.0 -57.4 123 6 351.4 351.4 297.0 351.6 0.04 39 150 14260 -66.3 -72.3 43 6.0 -66.4 330 4 355.9 355.9 297.9 355.9 0.01 40 146 14424 -67.9 -73.9 42 6.0 -67.9 352 4 355.9 355.9 297.9 355.9 0.01 41 132 15026 -71.9 -81.9 21 10.0 -71.9 76 6 359.1 359.1 298.5 359.1 0.00 42 111 16032 -79.5 -83.0 56 3.5 -79.5 107 25 363.1 363.1 299.3 363.1 0.00 43 100 16620 -82.9 -87.4 46 4.5 -82.9 105 43 367.6 367.6 300.1 367.6 0.00 44 94 16964 -83.5 -87.8 47 4.3 -83.5 103 45 372.9 372.9 301.1 372.9 0.00 45 94 16964 -83.7 -88.0 47 4.3 -83.7 103 45 372.5 372.5 301.0 372.6 0.00 TRP WND Sounding variables and indices 1000-500 mb thick: 5796.00 m Freezing level: 567.90 mb = 4890.82 m = 16045.80 ft Wetbulb zero: 591.53 mb = 4536.85 m = 14884.50 ft Precipitable water: 2.29 inches Sfc-500 mean rel hum: 77.84 % Est. max temperature: 33.52 C = 92.33 F Sfc-Lift cond lev (LCL): 997.73 mb = 104.12 m = 341.58 ft T: 25.72 C 700-500 lapse rate: 6.27 C/km ThetaE index: 11.41 C Layer 925.0- 776.0 mb Conv cond level (CCL): 862.60 mb = 1378.12 m = 4521.34 ft Mean mixing ratio: 17.21 g/kg Conv temperature: 33.37 C = 92.07 F Cap Strength: 2.03 C Lifted Index: -3.35 C Risk: Severe thunderstorms possible Lifted Index @300 mb: -3.13 C Lifted Index @700 mb: 0.39 C Showalter Index: -0.95 C Risk: Thunderstorms probable Total Totals Index: 45.70 C Risk: Scattered moderate thunderstorms Vertical Totals Index: 24.70 C Cross Totals Index: 21.00 C K Index: 33.20 Risk: 60-80 % chance of thunderstorms Sweat Index: 219.00 Risk: None Energy Index: -1.03 Risk: Scattered severe thunderstorms Parcel Indices Parcel: using 100 mb layer CAPE (B+): 983.70 J/kg Max Up Vert Vel: 44.36 m/s Conv Inhibition (B-): 52.94 J/kg Cap Strength: 2.03 C Lift Cond Lev (LCL): 917.61 mb = 840.77 m = 2758.40 ft Lev Free Conv (LFC): 802.61 mb = 1996.97 m = 6551.65 ft Equ Level (EL): 722.61 mb = 2884.78 m = 9464.39 ft B at Equ Level: 41.02 J/kg Wind level data Storm motion: 111 at 8 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 20 3 -1.0 -2.8 | 312 8 6.3 -5.7 1 1000 84 25 5 -2.1 -4.5 | 325 9 5.2 -7.4 2 975 305 35 11 -6.3 -9.0 | 355 12 1.0 -11.9 3 942 610 50 12 -9.2 -7.7 | 10 11 -1.9 -10.6 4 925 771 55 12 -9.8 -6.9 | 15 10 -2.5 -9.7 5 910 914 60 12 -10.4 -6.0 | 19 9 -3.1 -8.8 6 850 1506 95 12 -12.0 1.0 | 69 5 -4.7 -1.8 7 848 1524 95 12 -12.0 1.0 | 69 5 -4.7 -1.8 8 789 2134 100 10 -9.8 1.7 | 66 3 -2.6 -1.1 9 709 3048 75 8 -7.7 -2.1 | 5 5 -0.4 -4.9 10 700 3152 85 7 -7.0 -0.6 | 355 3 0.3 -3.5 11 658 3658 90 9 -9.0 0.0 | 31 3 -1.7 -2.8 12 588 4572 90 12 -12.0 0.0 | 59 6 -4.7 -2.8 13 566 4877 85 13 -13.0 -1.1 | 55 7 -5.7 -4.0 14 525 5486 80 12 -11.8 -2.1 | 43 7 -4.5 -4.9 15 500 5880 85 9 -9.0 -0.8 | 25 4 -1.7 -3.6 16 486 6096 85 9 -9.0 -0.8 | 25 4 -1.7 -3.6 17 400 7600 80 9 -8.9 -1.6 | 20 5 -1.6 -4.4 18 399 7620 85 10 -10.0 -0.9 | 36 5 -2.7 -3.7 19 324 9144 95 6 -6.0 0.5 | 331 3 1.3 -2.3 20 300 9710 50 7 -5.4 -4.5 | 345 8 1.9 -7.3 21 261 10668 50 10 -7.7 -6.4 | 2 9 -0.4 -9.3 22 250 10980 75 7 -6.8 -1.8 | 354 5 0.5 -4.7 23 208 12192 50 8 -6.1 -5.1 | 352 8 1.2 -8.0 24 200 12460 60 9 -7.8 -4.5 | 4 7 -0.5 -7.3 25 164 13716 195 2 0.5 1.9 | 277 8 7.8 -0.9 26 150 14260 330 4 2.0 -3.5 | 304 11 9.3 -6.3 27 127 15240 110 6 -5.6 2.1 | 296 2 1.7 -0.8 28 103 16459 105 36 -34.8 9.3 | 103 28 -27.5 6.5 29 100 16620 105 43 -41.5 11.1 | 104 35 -34.2 8.3 30 87 17374 100 47 -46.3 8.2 | 98 39 -39.0 5.3 Wind Parameters Mean winds (0-6000m): 81.3 at 10.4 knts Storm direction: 111.3 at 7.8 knts Shear (0-3000m) pos: 1.8 neg: 0.7 tot: 2.5 10-3/s Storm rel Dir Shear (0-3000m): 54.7 deg Storm rel helicity (0-3000m) pos: 43.1 neg: -3.6 tot: 39.6 m^2/s^2 ave: 13.2 10^-3 m/s^2 rel: 0.52 Storm rel vorticity (0-3000m) horiz: 4.7 stream: 2.4 10^-3/s Energy-Hel index: 0.27 Bulk Rich Number: 127.91 Bulk Shear: 7.69 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 35 9 347 10| 9.3 0.0 9.3| 25.1 0.0 25.1 50.1 0.91| 10.5 9.6 1000 47 10 1 10| 5.2 0.0 5.2| 34.3 0.0 34.3 34.3 0.88| 7.5 6.6 1500 59 11 13 9| 4.0 0.0 4.0| 43.1 0.0 43.1 28.7 0.86| 7.1 6.1 2000 69 11 24 7| 2.6 0.0 2.6| 43.1 -0.1 43.1 21.5 0.79| 5.8 4.6 2500 74 11 28 7| 2.1 0.4 2.5| 43.1 -1.5 41.6 16.6 0.64| 5.1 3.3 3000 76 10 27 6| 1.8 0.7 2.5| 43.1 -3.6 39.6 13.2 0.52| 4.7 2.4 4000 79 10 27 5| 1.7 0.6 2.2| 45.6 -4.3 41.3 10.3 0.51| 4.1 2.1 5000 81 10 33 5| 1.4 0.5 1.9| 47.0 -5.5 41.5 8.3 0.47| 3.6 1.7 6000 81 10 34 5| 1.0 0.5 1.5| 47.0 -9.7 37.3 6.2 0.35| 3.4 1.2 Wrote GIF file: /home/apache/climate/data/raob//VTBC/skewt/VTBC.skewt.20251016.00.gif