UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025101712.upa.cvt Date: 1200Z 17 OCT 25 Searching for VVNB... Searching the city database file for: VVNB ... Date:1200Z 17 OCT 25 Station: VVNB WMO ident: 48820 Latitude: 21.02 Longitude: 105.80 Elevation: 6.00 ------------------------------------------------------------------------------- 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 1012 6 30.2 22.2 62 8.0 24.4 0 0 302.3 305.4 297.1 352.2 16.88 1 1000 111 30.2 21.2 59 9.0 23.7 85 3 303.4 306.3 296.8 351.0 16.05 2 925 803 23.8 19.2 75 4.6 20.5 80 5 303.6 306.5 296.4 349.1 15.31 3 887 1169 20.8 16.6 77 4.2 17.9 82 6 304.2 306.7 295.4 344.5 13.52 4 856 1476 19.2 12.2 64 7.0 14.7 85 7 305.6 307.6 293.6 337.1 10.49 5 850 1537 18.2 15.3 83 2.9 16.3 85 7 305.2 307.6 295.3 344.0 12.97 6 844 1598 17.6 15.6 88 2.0 16.3 87 7 305.2 307.7 295.5 345.1 13.33 7 770 2378 13.0 11.6 91 1.4 12.1 108 9 308.4 310.5 294.9 342.4 11.22 8 769 2389 13.0 11.6 91 1.4 12.1 108 9 308.5 310.6 294.9 342.6 11.23 9 700 3178 10.4 1.4 54 9.0 5.4 130 11 314.0 315.2 292.6 333.1 6.06 10 671 3530 9.0 -2.0 46 11.0 3.2 136 10 316.3 317.2 292.3 332.0 4.92 11 607 4350 2.4 -3.6 65 6.0 -0.6 149 8 317.8 318.8 292.6 333.4 4.83 12 585 4649 2.0 -15.0 27 17.0 -4.7 154 7 320.7 321.1 291.0 327.6 2.04 13 556 5058 -0.5 -4.6 74 4.1 -2.6 161 6 322.5 323.4 294.0 338.5 4.89 14 537 5335 -2.5 -6.3 75 3.8 -4.3 165 5 323.3 324.2 293.8 338.0 4.45 15 518 5621 -3.9 -9.9 63 6.0 -6.5 170 4 325.0 325.7 293.4 336.6 3.48 16 512 5713 -4.3 -14.3 46 10.0 -8.2 172 4 325.6 326.1 292.8 334.0 2.47 17 504 5837 -3.7 -26.7 15 23.0 -10.4 174 3 327.8 328.0 291.9 330.9 0.85 18 500 5900 -3.9 -26.9 15 23.0 -10.6 175 3 328.3 328.5 292.1 331.3 0.84 19 485 6140 -4.9 -31.9 10 27.0 -11.8 161 4 329.9 330.0 292.2 331.9 0.54 20 454 6655 -8.7 -27.7 20 19.0 -13.9 130 6 331.5 331.6 293.0 334.6 0.86 21 442 6862 -8.9 -38.9 7 30.0 -15.2 117 6 333.8 333.8 293.0 334.9 0.30 22 429 7093 -9.9 -24.9 28 15.0 -14.4 103 7 335.3 335.6 294.2 339.6 1.18 23 422 7220 -10.3 -30.3 18 20.0 -15.5 95 8 336.4 336.6 294.1 339.1 0.73 24 400 7630 -12.9 -37.9 10 25.0 -18.0 70 9 338.2 338.3 294.2 339.6 0.36 25 300 9750 -29.9 -46.9 18 17.0 -31.7 90 15 343.2 343.3 295.3 344.0 0.19 26 263 10672 -37.5 -50.5 25 13.0 -38.5 50 11 345.3 345.3 295.7 345.9 0.14 27 252 10965 -38.9 -58.9 10 20.0 -40.0 37 9 347.4 347.5 296.1 347.7 0.05 28 250 11020 -39.5 -62.5 7 23.0 -40.6 35 9 347.3 347.3 296.1 347.5 0.03 29 212 12122 -49.7 -62.7 20 13.0 -50.1 2 18 348.2 348.2 296.3 348.4 0.04 30 200 12500 -52.9 -64.9 22 12.0 -53.2 350 21 349.0 349.0 296.4 349.1 0.03 31 165 13717 -62.3 -71.3 29 9.0 -62.4 7 14 353.0 353.0 297.3 353.1 0.02 32 150 14300 -67.3 -73.3 42 6.0 -67.4 15 11 354.2 354.2 297.5 354.2 0.01 33 146 14462 -68.7 -73.7 48 5.0 -68.7 23 10 354.5 354.5 297.6 354.5 0.01 34 128 15241 -72.5 -81.5 24 9.0 -72.5 64 7 361.2 361.2 299.0 361.2 0.00 35 112 16015 -77.5 -81.9 49 4.4 -77.5 105 4 365.9 365.9 299.8 366.0 0.00 36 100 16660 -79.3 -85.3 37 6.0 -79.3 140 1 374.5 374.5 301.4 374.5 0.00 TRP WND Sounding variables and indices 1000-500 mb thick: 5789.00 m Freezing level: 561.80 mb = 4976.01 m = 16325.28 ft Wetbulb zero: 617.34 mb = 4212.10 m = 13819.05 ft Precipitable water: 1.94 inches Sfc-500 mean rel hum: 65.41 % Est. max temperature: 33.26 C = 91.86 F Sfc-Lift cond lev (LCL): 901.60 mb = 1026.36 m = 3367.28 ft T: 21.97 C 700-500 lapse rate: 5.25 C/km ThetaE index: 15.09 C Layer 1000.0- 850.0 mb Conv cond level (CCL): 850.23 mb = 1534.63 m = 5034.80 ft Mean mixing ratio: 15.68 g/kg Conv temperature: 33.12 C = 91.62 F Cap Strength: 1.37 C Lifted Index: -0.99 C Risk: Thunderstorms probable Lifted Index @300 mb: -1.56 C Lifted Index @700 mb: -0.23 C Showalter Index: 1.30 C Risk: Showers probable Total Totals Index: 41.30 C Risk: None Vertical Totals Index: 22.10 C Cross Totals Index: 19.20 C K Index: 28.40 Risk: 40-60 % chance of thunderstorms Sweat Index: 200.60 Risk: None Energy Index: -2.40 Risk: Severe Thunderstorms probable Parcel Indices Parcel: using 100 mb layer CAPE (B+): 404.84 J/kg Max Up Vert Vel: 28.45 m/s Conv Inhibition (B-): 20.83 J/kg Cap Strength: 1.37 C Lift Cond Lev (LCL): 872.30 mb = 1313.26 m = 4308.55 ft Lev Free Conv (LFC): 837.30 mb = 1665.53 m = 5464.28 ft Equ Level (EL): 427.30 mb = 7123.62 m = 23371.17 ft B at Equ Level: 229.31 J/kg Max Parcel Lev (MPL): 117.30 mb = 15746.61 m = 51661.49 ft Wind level data Storm motion: 151 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 1012 6 0 0 -0.0 -0.0 | 331 5 2.5 -4.5 1 1000 111 85 3 -3.0 -0.3 | 5 5 -0.4 -4.8 2 925 803 80 5 -4.9 -0.9 | 24 6 -2.4 -5.4 3 850 1537 85 7 -7.0 -0.6 | 41 7 -4.4 -5.1 4 700 3178 130 11 -8.4 7.1 | 113 6 -5.9 2.5 5 500 5900 175 3 -0.3 3.0 | 304 3 2.3 -1.6 6 400 7630 70 9 -8.5 -3.1 | 38 10 -5.9 -7.6 7 300 9750 90 15 -15.0 0.0 | 70 13 -12.5 -4.5 8 250 11020 35 9 -5.2 -7.4 | 12 12 -2.6 -11.9 9 200 12500 350 21 3.6 -20.7 | 346 26 6.2 -25.2 10 150 14300 15 11 -2.8 -10.6 | 1 15 -0.3 -15.2 11 100 16660 140 1 -0.6 0.8 | 333 4 1.9 -3.8 Wind Parameters Mean winds (0-6000m): 120.7 at 6.9 knts Storm direction: 150.7 at 5.2 knts Shear (0-3000m) pos: 1.7 neg: 0.2 tot: 1.9 10-3/s Storm rel Dir Shear (0-3000m): 133.8 deg Storm rel helicity (0-3000m) pos: 21.5 neg: 0.0 tot: 21.5 m^2/s^2 ave: 7.2 10^-3 m/s^2 rel: 0.96 Storm rel vorticity (0-3000m) horiz: 2.5 stream: 2.4 10^-3/s Energy-Hel index: 0.03 Bulk Rich Number: 130.99 Bulk Shear: 3.09 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 84 3 7 5| 4.3 0.0 4.3| 5.3 0.0 5.3 10.6 0.97| 4.4 4.2 1000 82 4 15 5| 2.1 0.7 2.9| 7.1 0.0 7.1 7.1 0.93| 2.9 2.7 1500 82 5 23 6| 1.9 0.5 2.4| 9.3 0.0 9.3 6.2 0.93| 2.4 2.2 2000 86 5 30 6| 1.8 0.4 2.1| 13.0 0.0 13.0 6.5 0.94| 2.4 2.2 2500 92 6 39 6| 1.7 0.3 2.0| 17.0 0.0 17.0 6.8 0.95| 2.4 2.3 3000 100 7 50 5| 1.7 0.2 1.9| 21.5 0.0 21.5 7.2 0.96| 2.5 2.4 4000 111 8 68 5| 1.0 0.2 1.2| 25.2 0.0 25.2 6.3 0.88| 2.4 2.1 5000 118 7 76 4| 0.6 0.1 0.7| 26.4 0.0 26.4 5.3 0.85| 2.3 1.9 6000 121 7 74 4| 0.3 0.1 0.4| 27.3 -0.0 27.3 4.5 0.82| 2.2 1.8 Wrote GIF file: /home/apache/climate/data/raob//VVNB/skewt/VVNB.skewt.20251017.12.gif