UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025122500.upa.cvt Date: 0000Z 25 DEC 25 Searching for VVNB... Searching the city database file for: VVNB ... Date:0000Z 25 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 1020 6 18.0 10.0 59 8.0 13.3 35 5 289.5 290.8 285.7 310.9 7.57 1 1000 173 16.0 8.0 59 8.0 11.5 30 19 289.1 290.3 284.7 308.2 6.74 2 925 829 10.2 6.5 78 3.7 8.2 25 29 289.7 290.9 284.7 308.4 6.57 3 903 1029 9.0 5.8 80 3.2 7.3 24 24 290.5 291.6 284.9 308.8 6.41 4 886 1188 11.0 6.3 73 4.7 8.4 22 21 294.2 295.4 286.6 313.7 6.77 5 851 1524 9.4 9.4 100 0.0 9.4 20 13 295.9 297.5 289.1 321.2 8.73 6 850 1534 9.4 9.4 100 0.0 9.4 20 13 296.0 297.6 289.2 321.3 8.74 7 794 2101 9.0 7.8 92 1.2 8.3 345 13 301.4 302.9 290.6 326.3 8.39 8 700 3135 2.6 1.2 90 1.4 1.8 280 13 305.4 306.5 289.8 323.5 5.97 9 665 3546 -0.9 -0.9 100 0.0 -0.9 280 17 305.9 306.9 289.5 322.4 5.39 10 659 3619 -1.1 -2.5 90 1.4 -1.8 280 18 306.5 307.4 289.2 321.4 4.83 11 655 3667 -0.9 -3.8 81 2.9 -2.3 280 19 307.3 308.1 289.0 320.9 4.41 12 654 3679 -0.7 -4.8 74 4.1 -2.6 280 19 307.6 308.4 288.9 320.4 4.09 13 650 3729 2.6 -16.4 23 19.0 -4.3 280 19 311.9 312.2 287.8 317.3 1.63 14 649 3741 4.6 -26.4 8 31.0 -4.6 280 20 314.3 314.4 287.6 316.7 0.68 15 646 3779 6.0 280 20 316.3 16 644 3804 6.2 280 20 316.8 17 633 3945 6.2 280 22 318.4 18 500 5840 -3.7 -44.7 2 41.0 -11.7 280 42 328.5 328.6 291.5 329.1 0.14 19 485 6080 -4.9 -47.9 2 43.0 -12.6 279 43 329.9 329.9 291.8 330.3 0.10 20 427 7065 -13.5 -37.5 11 24.0 -18.2 276 45 331.2 331.3 292.4 332.6 0.36 21 400 7560 -15.5 -56.5 2 41.0 -20.4 275 46 334.8 334.9 293.0 335.0 0.05 22 385 7848 -17.1 -58.1 2 41.0 -21.7 273 46 336.4 336.4 293.4 336.6 0.04 23 334 8898 -25.7 -49.7 9 24.0 -28.3 266 47 338.6 338.6 294.1 339.1 0.12 24 300 9670 -30.1 -53.1 9 23.0 -32.1 260 48 343.0 343.0 295.1 343.3 0.09 25 284 10058 -32.5 -54.5 9 22.0 -34.3 262 49 344.9 345.0 295.6 345.3 0.08 26 250 10940 -40.7 -56.7 16 16.0 -41.6 265 52 345.6 345.6 295.7 345.9 0.07 27 239 11243 -43.5 -57.5 20 14.0 -44.2 266 53 345.8 345.8 295.8 346.1 0.07 28 215 11943 -49.5 -65.5 14 16.0 -49.9 268 56 347.1 347.1 296.0 347.2 0.03 29 200 12410 -53.9 -63.9 28 10.0 -54.1 270 58 347.4 347.4 296.1 347.6 0.04 30 197 12507 -54.7 -62.7 37 8.0 -54.9 270 59 347.6 347.7 296.1 347.8 0.04 31 156 13962 -64.9 -73.9 28 9.0 -65.0 266 71 354.3 354.3 297.5 354.3 0.01 32 150 14200 -66.9 -73.9 37 7.0 -67.0 265 73 354.8 354.8 297.7 354.9 0.01 33 146 14363 -68.5 -74.5 42 6.0 -68.5 266 74 354.8 354.8 297.7 354.9 0.01 34 133 14916 -72.8 -78.8 40 6.0 -72.9 270 77 356.7 356.7 298.1 356.7 0.01 35 125 15278 -75.7 -81.7 38 6.0 -75.7 268 71 357.9 357.9 298.3 357.9 0.00 36 113 15858 -78.1 -86.1 26 8.0 -78.1 265 60 363.9 363.9 299.4 363.9 0.00 37 100 16560 -76.3 -90.3 9 14.0 -76.3 280 40 380.3 380.3 302.3 380.3 0.00 TRP 113 15858 -78.1 -86.1 26 8.0 -78.1 265 60 363.9 363.9 299.4 363.9 0.00 WND 133 14916 -72.8 -78.8 40 6.0 -72.9 270 77 356.7 356.7 298.1 356.7 0.01 Sounding variables and indices 1000-500 mb thick: 5667.00 m Freezing level: 674.00 mb = 3440.65 m = 11288.09 ft Freezing level: 653.15 mb = 3689.80 m = 12105.50 ft Freezing level: 549.71 mb = 5131.80 m = 16836.41 ft Wetbulb zero: 676.66 mb = 3406.98 m = 11177.62 ft Precipitable water: 1.07 inches Sfc-500 mean rel hum: 84.54 % Est. max temperature: 23.47 C = 74.24 F Sfc-Lift cond lev (LCL): 905.31 mb = 1008.21 m = 3307.74 ft T: 9.13 C 700-500 lapse rate: 2.33 C/km ThetaE index: 9.60 C Layer 700.0- 646.0 mb Conv cond level (CCL): 705.32 mb = 3072.79 m = 10081.22 ft Mean mixing ratio: 6.74 g/kg Conv temperature: 33.71 C = 92.67 F Cap Strength: 16.20 C Lifted Index: 19.51 C Risk: None Lifted Index @300 mb: 24.55 C Lifted Index @700 mb: 7.44 C Showalter Index: 11.98 C Risk: None Total Totals Index: 26.20 C Risk: None Vertical Totals Index: 13.10 C Cross Totals Index: 13.10 C K Index: 21.10 Risk: 20-40 % chance of thunderstorms Sweat Index: 180.80 Risk: None Energy Index: 1.74 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 0.66 J/kg Max Up Vert Vel: 1.15 m/s Conv Inhibition (B-): 13182.18 J/kg Cap Strength: 19.41 C Lift Cond Lev (LCL): 883.37 mb = 1212.72 m = 3978.70 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 336 at 17 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 1020 6 35 5 -2.9 -4.1 | 140 15 -9.7 11.4 1 1000 173 30 19 -9.5 -16.5 | 86 16 -16.3 -1.0 2 925 829 25 29 -12.3 -26.3 | 60 22 -19.0 -10.8 3 850 1534 20 13 -4.4 -12.2 | 106 12 -11.2 3.2 4 700 3135 280 13 12.8 -2.3 | 204 15 6.0 13.2 5 500 5840 280 42 41.4 -7.3 | 257 36 34.6 8.2 6 400 7560 275 46 45.8 -4.0 | 254 41 39.0 11.4 7 300 9670 260 48 47.3 8.3 | 240 47 40.5 23.8 8 250 10940 265 52 51.8 4.5 | 246 49 45.0 20.0 9 200 12410 270 58 58.0 -0.0 | 253 53 51.2 15.5 10 150 14200 265 73 72.7 6.4 | 252 69 65.9 21.8 11 133 14916 270 77 77.0 -0.0 | 258 72 70.2 15.5 12 113 15858 265 60 59.8 5.2 | 249 57 53.0 20.7 13 100 16560 280 40 39.4 -6.9 | 255 34 32.6 8.5 Wind Parameters Mean winds (0-6000m): 306.3 at 22.5 knts Storm direction: 336.3 at 16.9 knts Shear (0-3000m) pos: 0.0 neg: 2.6 tot: 2.6 10-3/s Storm rel Dir Shear (0-3000m): 66.4 deg Storm rel helicity (0-3000m) pos: 57.1 neg: -93.8 tot: -36.7 m^2/s^2 ave: -12.2 10^-3 m/s^2 rel: -0.03 Storm rel vorticity (0-3000m) horiz: 10.3 stream: -0.4 10^-3/s Energy-Hel index: 0.00 Bulk Rich Number: 0.01 Bulk Shear: 97.81 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 29 18 88 16| 0.0 19.7 19.7| 0.0 -73.4 -73.4 -146.7 -0.95| 19.9-18.9 1000 27 23 75 18| 0.0 10.3 10.3| 9.4 -93.4 -84.0 -84.0 -0.73| 14.3-10.5 1500 26 21 76 17| 0.0 3.0 3.0| 43.1 -93.4 -50.3 -33.5 -0.29| 13.4 -3.9 2000 23 19 80 14| 0.0 2.6 2.6| 47.8 -93.4 -45.6 -22.8 -0.20| 11.9 -2.4 2500 17 18 81 12| 0.0 2.6 2.6| 54.7 -93.4 -38.7 -15.5 -0.06| 11.0 -0.7 3000 11 17 82 10| 0.0 2.6 2.6| 57.1 -93.8 -36.7 -12.2 -0.03| 10.3 -0.4 4000 351 17 70 4| 0.0 3.2 3.2| 91.3 -94.7 -3.4 -0.8 0.08| 9.2 0.7 5000 324 19 273 4| 0.0 3.6 3.6|131.1 -94.7 36.5 7.3 0.15| 8.4 1.2 6000 306 23 259 12| 0.0 3.8 3.8|163.7 -95.7 68.1 11.3 0.17| 7.8 1.4 Wrote GIF file: /home/apache/climate/data/raob//VVNB/skewt/VVNB.skewt.20251225.00.gif