UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025101312.upa.cvt Date: 1200Z 13 OCT 25 Searching for VVNB... Searching the city database file for: VVNB ... Date:1200Z 13 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 1010 6 26.4 24.4 89 2.0 24.9 155 1 298.7 302.2 297.7 355.3 19.39 1 1000 94 26.0 23.7 87 2.3 24.3 155 3 299.1 302.6 297.5 354.0 18.76 2 925 780 23.0 19.4 80 3.6 20.5 90 13 302.8 305.7 296.4 348.7 15.51 3 850 1515 19.4 15.5 78 3.9 16.7 80 15 306.5 308.9 295.7 346.0 13.14 4 828 1741 18.6 12.6 68 6.0 14.7 83 15 307.9 310.0 294.7 341.7 11.14 5 700 3165 10.4 8.0 85 2.4 8.9 100 13 314.0 315.9 295.3 344.0 9.67 6 639 3923 7.2 2.5 72 4.7 4.5 122 11 318.7 320.1 294.7 341.6 7.19 7 573 4812 0.4 0.0 97 0.4 0.2 148 9 320.8 322.1 294.8 342.3 6.70 8 500 5900 -4.3 -5.6 91 1.3 -5.0 180 7 327.8 328.8 295.4 344.6 5.05 9 400 7620 -14.3 -15.8 88 1.5 -14.9 155 5 336.4 337.0 295.8 346.2 2.79 10 395 7716 -14.5 -16.1 88 1.6 -15.1 154 5 337.4 337.9 296.0 347.1 2.76 11 373 8149 -17.7 -20.4 79 2.7 -18.6 151 6 338.7 339.1 295.7 346.0 2.02 12 300 9750 -28.7 -30.5 84 1.8 -29.0 140 9 344.9 345.1 296.4 348.8 1.01 13 250 11020 -39.1 -43.6 62 4.5 -39.5 165 9 347.9 348.0 296.5 349.2 0.32 14 204 12381 -51.3 -57.3 49 6.0 -51.5 170 13 349.5 349.6 296.6 349.9 0.08 15 200 12510 -52.3 -58.3 48 6.0 -52.5 170 13 349.9 350.0 296.7 350.3 0.07 16 191 12805 -54.9 -59.1 60 4.2 -55.0 162 15 350.4 350.4 296.8 350.7 0.07 17 186 12974 -55.9 -63.9 36 8.0 -56.1 157 16 351.5 351.5 297.0 351.6 0.04 18 173 13429 -60.1 -63.3 66 3.2 -60.2 145 18 351.9 351.9 297.1 352.1 0.04 19 161 13872 -64.3 -68.6 55 4.3 -64.4 132 21 352.1 352.1 297.1 352.2 0.02 20 150 14300 -67.5 -71.9 53 4.4 -67.5 120 23 353.8 353.8 297.5 353.9 0.02 21 143 14586 -69.7 -73.9 54 4.2 -69.7 139 21 354.8 354.8 297.7 354.9 0.01 22 140 14713 -70.5 -76.5 41 6.0 -70.5 148 20 355.6 355.6 297.8 355.6 0.01 23 136 14886 -68.5 -79.5 19 11.0 -68.5 160 19 362.1 362.1 299.1 362.1 0.01 24 100 16680 -79.5 -86.5 30 7.0 -79.5 285 7 374.1 374.1 301.3 374.1 0.00 TRP WND Sounding variables and indices 1000-500 mb thick: 5806.00 m Freezing level: 566.79 mb = 4904.54 m = 16090.82 ft Wetbulb zero: 570.23 mb = 4850.61 m = 15913.88 ft Precipitable water: 2.43 inches Sfc-500 mean rel hum: 82.55 % Est. max temperature: 33.69 C = 92.64 F Sfc-Lift cond lev (LCL): 981.53 mb = 258.00 m = 846.44 ft T: 25.28 C 700-500 lapse rate: 5.37 C/km ThetaE index: 13.62 C Layer 1000.0- 700.0 mb Conv cond level (CCL): 854.10 mb = 1473.16 m = 4833.14 ft Mean mixing ratio: 17.03 g/kg Conv temperature: 33.98 C = 93.17 F Cap Strength: 1.91 C Lifted Index: -1.80 C Risk: Thunderstorms probable Lifted Index @300 mb: -1.00 C Lifted Index @700 mb: -0.52 C Showalter Index: 0.13 C Risk: Thunderstorms probable Total Totals Index: 43.50 C Risk: None Vertical Totals Index: 23.70 C Cross Totals Index: 19.80 C K Index: 36.80 Risk: > 80 % chance of thunderstorms Sweat Index: 223.00 Risk: None Energy Index: -0.31 Risk: Scattered severe thunderstorms Parcel Indices Parcel: using 100 mb layer CAPE (B+): 500.54 J/kg Max Up Vert Vel: 31.64 m/s Conv Inhibition (B-): 76.29 J/kg Cap Strength: 1.91 C Lift Cond Lev (LCL): 919.30 mb = 833.70 m = 2735.19 ft Lev Free Conv (LFC): 724.30 mb = 2875.58 m = 9434.22 ft Equ Level (EL): 184.30 mb = 13031.25 m = 42752.94 ft B at Equ Level: 497.67 J/kg Max Parcel Lev (MPL): 114.30 mb = 15899.85 m = 52164.24 ft Wind level data Storm motion: 134 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 1010 6 155 1 -0.4 0.9 | 311 7 5.6 -4.9 1 1000 94 155 3 -1.3 2.7 | 303 6 4.8 -3.1 2 925 780 90 13 -13.0 0.0 | 50 9 -7.0 -5.8 3 850 1515 80 15 -14.8 -2.6 | 46 12 -8.7 -8.4 4 700 3165 100 13 -12.8 2.3 | 62 8 -6.8 -3.6 5 500 5900 180 7 0.0 7.0 | 259 6 6.0 1.2 6 400 7620 155 5 -2.1 4.5 | 288 4 3.9 -1.3 7 300 9750 140 9 -5.8 6.9 | 193 1 0.3 1.1 8 250 11020 165 9 -2.3 8.7 | 232 5 3.7 2.9 9 200 12510 170 13 -2.3 12.8 | 208 8 3.8 7.0 10 150 14300 120 23 -19.9 11.5 | 112 15 -13.9 5.7 11 100 16680 285 7 6.8 -1.8 | 301 15 12.8 -7.6 Wind Parameters Mean winds (0-6000m): 103.9 at 11.2 knts Storm direction: 133.9 at 8.4 knts Shear (0-3000m) pos: 0.8 neg: 2.5 tot: 3.3 10-3/s Storm rel Dir Shear (0-3000m): 109.5 deg Storm rel helicity (0-3000m) pos: 9.1 neg: -5.0 tot: 4.1 m^2/s^2 ave: 1.4 10^-3 m/s^2 rel: 0.19 Storm rel vorticity (0-3000m) horiz: 4.1 stream: 0.8 10^-3/s Energy-Hel index: 0.02 Bulk Rich Number: 85.09 Bulk Shear: 5.88 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 ------------------------------------------------------------------------------- 500 127 5 325 3| 0.0 8.5 8.5| 1.8 -1.7 0.1 0.2 0.29| 9.8 2.9 1000 97 9 28 5| 0.0 6.8 6.8| 2.3 -3.3 -1.0 -1.0 0.15| 8.7 1.3 1500 91 11 38 7| 0.0 5.1 5.1| 2.3 -5.0 -2.7 -1.8 0.10| 6.5 0.7 2000 88 12 42 8| 0.4 3.8 4.2| 5.0 -5.0 -0.0 -0.0 0.14| 5.3 0.7 2500 88 12 44 9| 0.7 3.0 3.7| 7.3 -5.0 2.3 0.9 0.17| 4.6 0.8 3000 89 12 47 9| 0.8 2.5 3.3| 9.1 -5.0 4.1 1.4 0.19| 4.1 0.8 4000 94 12 52 8| 1.4 1.9 3.2| 14.1 -5.0 9.1 2.3 0.27| 3.8 1.0 5000 100 12 56 7| 1.6 1.5 3.1| 17.0 -5.0 12.0 2.4 0.36| 3.6 1.3 6000 104 11 57 6| 1.5 1.3 2.8| 20.5 -5.0 15.5 2.6 0.39| 3.4 1.3 Wrote GIF file: /home/apache/climate/data/raob//VVNB/skewt/VVNB.skewt.20251013.12.gif