UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025122012.upa.cvt Date: 1200Z 20 DEC 25 Searching for VVNB... Searching the city database file for: VVNB ... Date:1200Z 20 DEC 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 1016 6 23.8 18.8 74 5.0 20.4 155 3 295.6 298.0 292.9 334.6 13.56 1 1000 142 22.8 18.4 76 4.4 19.8 145 7 296.0 298.4 293.0 334.6 13.43 2 925 816 17.2 16.4 95 0.8 16.7 90 1 296.9 299.2 292.7 333.8 12.78 3 859 1445 12.4 11.5 94 0.9 11.9 112 1 298.2 300.0 290.9 327.3 9.97 4 850 1534 11.8 10.6 92 1.2 11.1 115 1 298.5 300.2 290.6 326.2 9.48 5 824 1794 11.8 7.2 73 4.6 9.1 144 2 301.2 302.6 290.0 324.2 7.75 6 762 2442 6.4 3.5 82 2.9 4.8 216 4 302.1 303.3 289.2 321.5 6.47 7 759 2475 6.2 0.2 65 6.0 3.2 220 4 302.3 303.2 288.0 317.7 5.12 8 750 2573 7.2 -12.8 23 20.0 -0.6 231 5 304.4 304.7 285.5 310.4 1.90 9 733 2761 7.2 -12.8 23 20.0 -0.6 252 6 306.4 306.8 286.2 312.6 1.95 10 715 2966 6.2 -14.8 21 21.0 -1.7 275 6 307.5 307.8 286.4 313.0 1.69 11 701 3128 7.6 -26.4 7 34.0 -2.6 294 7 310.8 310.9 286.4 312.9 0.63 12 700 3140 7.4 -26.6 7 34.0 -2.8 295 7 310.7 310.8 286.3 312.8 0.62 13 578 4694 0.8 -45.2 2 46.0 -8.4 275 15 320.4 320.5 289.0 320.9 0.12 14 500 5840 -7.3 -33.3 10 26.0 -13.3 260 21 324.1 324.2 290.5 325.8 0.46 15 400 7540 -20.3 -40.3 15 20.0 -23.4 295 44 328.6 328.7 291.6 329.7 0.28 16 380 7915 -23.7 -41.7 17 18.0 -26.1 291 45 329.0 329.0 291.7 330.0 0.26 17 374 8031 -23.5 -50.5 6 27.0 -26.3 289 45 330.7 330.8 292.0 331.1 0.10 18 302 9554 -34.3 -64.3 3 30.0 -35.8 271 50 336.4 336.4 293.4 336.5 0.02 19 300 9600 -34.1 -64.1 3 30.0 -35.7 270 50 337.3 337.3 293.7 337.4 0.02 20 283 10007 -35.3 -65.3 3 30.0 -36.8 268 53 341.3 341.3 294.7 341.4 0.02 21 250 10860 -41.5 -67.5 4 26.0 -42.4 265 60 344.4 344.4 295.4 344.4 0.02 22 233 11334 -43.5 -71.5 3 28.0 -44.3 267 64 348.3 348.3 296.3 348.4 0.01 23 200 12340 -51.3 -74.4 5 23.1 -51.7 270 73 351.6 351.6 297.0 351.6 0.01 24 150 14150 -65.9 -79.9 12 14.0 -66.0 260 68 356.6 356.6 298.0 356.6 0.00 25 147 14272 -67.1 -80.1 14 13.0 -67.2 260 67 356.5 356.6 298.0 356.6 0.00 26 117 15629 -72.9 -85.9 12 13.0 -72.9 266 58 369.9 369.9 300.5 369.9 0.00 27 100 16540 -77.1 -89.1 13 12.0 -77.1 270 52 378.8 378.8 302.1 378.8 0.00 TRP WND 200 12340 -51.3 -74.4 5 23.1 -51.7 270 73 351.6 351.6 297.0 351.6 0.01 Sounding variables and indices 1000-500 mb thick: 5698.00 m Freezing level: 570.30 mb = 4807.58 m = 15772.72 ft Wetbulb zero: 751.37 mb = 2557.68 m = 8391.24 ft Precipitable water: 1.17 inches Sfc-500 mean rel hum: 39.96 % Est. max temperature: 26.30 C = 79.34 F Sfc-Lift cond lev (LCL): 944.37 mb = 636.86 m = 2089.41 ft T: 18.69 C 700-500 lapse rate: 5.44 C/km ThetaE index: 24.17 C Layer 925.0- 733.0 mb Conv cond level (CCL): 917.78 mb = 882.61 m = 2895.66 ft Mean mixing ratio: 13.12 g/kg Conv temperature: 25.24 C = 77.43 F Cap Strength: 3.24 C Lifted Index: 1.94 C Risk: Showers probable Lifted Index @300 mb: 3.50 C Lifted Index @700 mb: 1.58 C Showalter Index: 5.81 C Risk: None Total Totals Index: 37.00 C Risk: None Vertical Totals Index: 19.10 C Cross Totals Index: 17.90 C K Index: -4.30 Risk: None Sweat Index: 150.20 Risk: None Energy Index: 0.05 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 90.22 J/kg Max Up Vert Vel: 13.43 m/s Conv Inhibition (B-): 1.70 J/kg Cap Strength: 3.26 C Lift Cond Lev (LCL): 926.95 mb = 797.77 m = 2617.34 ft Lev Free Conv (LFC): 901.95 mb = 1030.51 m = 3380.90 ft Equ Level (EL): 711.95 mb = 3000.78 m = 9844.96 ft B at Equ Level: 89.57 J/kg Max Parcel Lev (MPL): 611.95 mb = 4231.12 m = 13881.47 ft Wind level data Storm motion: 297 at 7 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 1016 6 155 3 -1.3 2.7 | 129 9 -7.1 5.7 1 1000 142 145 7 -4.0 5.7 | 132 13 -9.9 8.8 2 925 816 90 1 -1.0 0.0 | 114 7 -6.8 3.0 3 850 1534 115 1 -0.9 0.4 | 117 8 -6.8 3.4 4 700 3140 295 7 6.3 -3.0 | 262 0 0.5 0.1 5 500 5840 260 21 20.7 3.6 | 246 16 14.8 6.7 6 400 7540 295 44 39.9 -18.6 | 295 37 34.0 -15.6 7 300 9600 270 50 50.0 -0.0 | 266 44 44.2 3.0 8 250 10860 265 60 59.8 5.2 | 261 55 53.9 8.3 9 200 12340 270 73 73.0 -0.0 | 267 67 67.2 3.0 10 150 14150 260 68 67.0 11.8 | 256 63 61.1 14.8 11 100 16540 270 52 52.0 -0.0 | 266 46 46.2 3.0 Wind Parameters Mean winds (0-6000m): 267.3 at 8.8 knts Storm direction: 297.3 at 6.6 knts Shear (0-3000m) pos: 1.3 neg: 0.4 tot: 1.7 10-3/s Storm rel Dir Shear (0-3000m): 67.3 deg Storm rel helicity (0-3000m) pos: 18.4 neg: -11.3 tot: 7.2 m^2/s^2 ave: 2.4 10^-3 m/s^2 rel: 0.26 Storm rel vorticity (0-3000m) horiz: 4.0 stream: 1.0 10^-3/s Energy-Hel index: 0.00 Bulk Rich Number: 4.18 Bulk Shear: 21.61 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 ------------------------------------------------------------------------------- 500 138 5 127 12| 0.0 2.5 2.5| 1.4 -9.8 -8.4 -16.8 -0.35| 7.6 -2.7 1000 138 4 125 10| 0.0 1.3 1.3| 1.8 -11.3 -9.4 -9.4 -0.29| 5.4 -1.5 1500 134 3 122 9| 0.1 0.9 1.0| 2.4 -11.3 -8.8 -5.9 -0.25| 3.7 -0.9 2000 138 2 123 9| 0.7 0.7 1.3| 7.2 -11.3 -4.1 -2.0 -0.04| 3.4 -0.1 2500 160 3 130 9| 1.1 0.5 1.6| 14.8 -11.3 3.5 1.4 0.18| 3.6 0.6 3000 214 3 144 7| 1.3 0.4 1.7| 18.4 -11.3 7.2 2.4 0.26| 4.0 1.0 4000 281 5 147 3| 1.3 0.5 1.8| 18.8 -11.6 7.2 1.8 0.24| 3.8 0.9 5000 276 7 195 2| 1.0 0.9 1.9| 18.8 -15.3 3.4 0.7 0.15| 3.7 0.6 6000 267 9 220 5| 0.8 1.3 2.2| 26.4 -23.4 2.9 0.5 0.11| 3.7 0.4 Wrote GIF file: /home/apache/climate/data/raob//VVNB/skewt/VVNB.skewt.20251220.12.gif