UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025042112.upa.cvt Date: 1200Z 21 APR 25 Searching for VVNB... Searching the city database file for: VVNB ... Date:1200Z 21 APR 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 1007 6 26.0 22.7 82 3.3 23.6 155 3 298.6 301.7 296.5 349.5 17.50 1 1000 69 25.2 22.2 83 3.0 23.0 155 7 298.4 301.5 296.2 348.1 17.09 2 948 539 24.0 19.4 75 4.6 20.8 172 12 301.7 304.5 295.8 346.3 15.12 3 925 756 26.4 17.4 58 9.0 20.1 180 15 306.3 308.8 296.0 347.3 13.64 4 918 823 26.6 17.6 58 9.0 20.3 182 15 307.2 309.8 296.4 349.1 13.93 5 850 1500 22.8 16.8 69 6.0 18.6 205 17 310.0 312.7 297.4 353.6 14.31 6 832 1687 22.0 13.0 57 9.0 16.0 209 18 311.1 313.2 295.7 346.0 11.39 7 764 2421 16.2 13.3 83 2.9 14.3 227 22 312.5 314.9 297.0 351.5 12.67 8 735 2750 14.6 8.6 67 6.0 10.8 235 24 314.2 316.1 295.3 344.1 9.59 9 700 3162 11.8 6.9 72 4.9 8.8 245 27 315.6 317.3 295.2 343.6 8.96 10 620 4165 4.4 1.8 83 2.6 2.9 247 30 318.2 319.6 294.5 340.6 7.05 11 561 4974 -0.3 -1.8 90 1.5 -1.1 248 32 321.9 323.1 294.6 341.3 5.99 12 552 5104 -0.5 -5.2 70 4.7 -2.9 249 33 323.2 324.1 294.0 338.6 4.71 13 525 5504 -2.7 -5.7 80 3.0 -4.2 249 34 325.2 326.1 294.6 340.9 4.77 14 512 5703 -3.5 -14.5 42 11.0 -7.8 250 34 326.5 327.0 293.0 334.8 2.43 15 500 5890 -4.9 -13.9 49 9.0 -8.5 250 35 327.1 327.6 293.3 336.0 2.61 16 498 5922 -4.9 -16.9 38 12.0 -9.4 250 35 327.4 327.8 292.9 334.5 2.04 17 473 6327 -6.9 -10.7 74 3.8 -8.5 248 34 329.8 330.5 294.8 342.0 3.58 18 469 6393 -7.5 -14.5 57 7.0 -10.2 247 34 329.9 330.4 294.1 339.0 2.65 19 467 6426 -7.5 -25.5 22 18.0 -12.8 247 34 330.3 330.5 292.8 334.0 1.03 20 465 6460 -7.7 -22.7 29 15.0 -12.4 247 34 330.4 330.7 293.1 335.2 1.33 21 462 6510 -8.1 -11.6 76 3.5 -9.6 246 34 330.6 331.2 294.8 342.2 3.41 22 457 6595 -8.5 -20.5 37 12.0 -12.5 246 33 331.1 331.4 293.6 336.9 1.64 23 452 6681 -8.9 -15.9 57 7.0 -11.6 245 33 331.6 332.1 294.4 340.1 2.45 24 439 6907 -10.7 -20.7 44 10.0 -14.0 244 33 332.1 332.5 293.9 338.1 1.68 25 437 6942 -10.9 -13.5 81 2.6 -11.9 244 33 332.3 332.9 295.0 343.0 3.09 26 433 7013 -11.5 -12.1 95 0.6 -11.8 244 32 332.4 333.1 295.4 344.4 3.49 27 424 7174 -11.7 -28.7 23 17.0 -16.2 243 32 334.2 334.3 293.6 337.3 0.84 28 422 7211 -11.9 -23.9 36 12.0 -15.5 242 32 334.4 334.6 294.1 339.1 1.31 29 421 7229 -12.3 -14.3 85 2.0 -13.1 242 32 334.1 334.7 295.4 344.5 3.00 30 404 7544 -13.7 -32.7 18 19.0 -18.1 240 31 336.2 336.3 294.0 338.5 0.61 31 401 7601 -14.1 -25.1 39 11.0 -17.2 240 31 336.4 336.7 294.6 341.0 1.24 32 400 7620 -13.9 -33.9 17 20.0 -18.3 240 31 336.9 337.0 294.1 339.0 0.54 33 398 7658 -13.5 -41.5 7 28.0 -18.7 241 31 337.9 338.0 294.0 338.9 0.25 34 395 7715 -13.9 -38.9 10 25.0 -18.8 242 31 338.1 338.2 294.2 339.4 0.33 35 388 7851 -15.1 -40.1 10 25.0 -19.7 245 30 338.3 338.4 294.2 339.5 0.30 36 375 8107 -17.1 -20.9 72 3.8 -18.3 251 29 339.0 339.4 295.7 345.9 1.93 37 367 8268 -17.3 -31.3 28 14.0 -20.5 255 29 340.8 341.0 295.2 343.7 0.76 38 335 8943 -23.1 -40.1 20 17.0 -25.8 271 26 341.9 341.9 295.1 343.2 0.35 39 317 9344 -26.1 -34.1 47 8.0 -27.6 280 25 343.1 343.3 295.7 345.7 0.67 40 301 9716 -29.1 -38.1 42 9.0 -30.4 289 23 344.0 344.1 295.7 345.9 0.48 41 300 9740 -29.3 -37.3 46 8.0 -30.6 290 23 344.1 344.2 295.8 346.1 0.52 42 299 9764 -29.3 -32.6 73 3.3 -29.9 289 23 344.4 344.6 296.1 347.6 0.83 43 284 10129 -31.5 -33.3 84 1.8 -31.8 278 22 346.4 346.5 296.5 349.5 0.81 44 255 10883 -36.5 -39.9 71 3.4 -36.9 254 19 349.8 349.9 297.0 351.7 0.47 45 250 11020 -37.9 -41.4 70 3.5 -38.3 250 19 349.7 349.8 296.9 351.4 0.41 46 242 11242 -39.7 -44.0 63 4.3 -40.1 250 18 350.3 350.4 297.0 351.6 0.32 47 200 12510 -50.5 -54.0 66 3.5 -50.7 250 13 352.8 352.8 297.4 353.3 0.12 48 196 12642 -51.5 -54.7 68 3.2 -51.6 251 13 353.3 353.3 297.4 353.7 0.12 49 155 14129 -63.3 -67.4 57 4.1 -63.4 259 11 357.7 357.7 298.2 357.8 0.03 50 150 14330 -65.1 -69.8 52 4.7 -65.1 260 11 357.9 357.9 298.3 358.0 0.02 51 143 14618 -66.9 -72.9 42 6.0 -67.0 278 11 359.7 359.7 298.7 359.8 0.01 52 135 14963 -68.3 -81.3 14 13.0 -68.4 299 11 363.2 363.2 299.3 363.2 0.00 53 100 16710 -78.9 -85.9 31 7.0 -78.9 50 11 375.3 375.3 301.5 375.3 0.00 TRP WND Sounding variables and indices 1000-500 mb thick: 5821.00 m Freezing level: 564.77 mb = 4922.41 m = 16149.44 ft Wetbulb zero: 576.96 mb = 4747.20 m = 15574.61 ft Precipitable water: 2.23 inches Sfc-500 mean rel hum: 72.97 % Est. max temperature: 37.20 C = 98.95 F Sfc-Lift cond lev (LCL): 960.19 mb = 426.82 m = 1400.32 ft T: 24.29 C 700-500 lapse rate: 6.12 C/km ThetaE index: 10.89 C Layer 735.0- 561.0 mb Conv cond level (CCL): 764.53 mb = 2415.23 m = 7923.89 ft Mean mixing ratio: 15.36 g/kg Conv temperature: 39.97 C = 103.94 F Cap Strength: 6.16 C Lifted Index: -1.11 C Risk: Thunderstorms probable Lifted Index @300 mb: 0.39 C Lifted Index @700 mb: 1.88 C Showalter Index: -3.22 C Risk: Severe thunderstorms possible Total Totals Index: 49.40 C Risk: Scattered heavy thunderstorms Vertical Totals Index: 27.70 C Cross Totals Index: 21.70 C K Index: 39.60 Risk: > 80 % chance of thunderstorms Sweat Index: 391.99 Risk: Showers and thunderstorms possible Energy Index: -3.42 Risk: Severe Thunderstorms probable Parcel Indices Parcel: using 100 mb layer CAPE (B+): 147.92 J/kg Max Up Vert Vel: 17.20 m/s Conv Inhibition (B-): 377.11 J/kg Cap Strength: 6.16 C Lift Cond Lev (LCL): 883.91 mb = 1155.98 m = 3792.55 ft Lev Free Conv (LFC): 638.91 mb = 3916.92 m = 12850.65 ft Equ Level (EL): 398.91 mb = 7640.67 m = 25067.50 ft B at Equ Level: 144.57 J/kg Max Parcel Lev (MPL): 248.91 mb = 11049.81 m = 36252.21 ft Wind level data Storm motion: 266 at 18 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 1007 6 155 3 -1.3 2.7 | 95 20 -19.5 1.6 1 1000 69 155 7 -3.0 6.3 | 104 22 -21.2 5.2 2 925 756 180 15 0.0 15.0 | 127 23 -18.3 13.9 3 850 1500 205 17 7.2 15.4 | 142 18 -11.1 14.3 4 700 3162 245 27 24.5 11.4 | 211 12 6.2 10.3 5 500 5890 250 35 32.9 12.0 | 233 18 14.6 10.8 6 400 7620 240 31 26.8 15.5 | 211 17 8.6 14.4 7 300 9740 290 23 21.6 -7.9 | 340 10 3.3 -9.0 8 250 11020 250 19 17.9 6.5 | 176 5 -0.4 5.4 9 200 12510 250 13 12.2 4.4 | 119 7 -6.1 3.3 10 150 14330 260 11 10.8 1.9 | 96 7 -7.4 0.8 11 100 16710 50 11 -8.4 -7.1 | 73 28 -26.7 -8.2 Wind Parameters Mean winds (0-6000m): 236.4 at 24.4 knts Storm direction: 266.4 at 18.3 knts Shear (0-3000m) pos: 4.5 neg: 0.0 tot: 4.5 10-3/s Storm rel Dir Shear (0-3000m): 107.3 deg Storm rel helicity (0-3000m) pos: 162.8 neg: 0.0 tot: 162.8 m^2/s^2 ave: 54.3 10^-3 m/s^2 rel: 0.90 Storm rel vorticity (0-3000m) horiz: 6.3 stream: 5.7 10^-3/s Energy-Hel index: 0.11 Bulk Rich Number: 2.07 Bulk Shear: 71.62 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 ------------------------------------------------------------------------------- 500 164 9 110 22| 9.5 0.0 9.5| 51.4 0.0 51.4 102.8 0.92| 10.0 9.2 1000 176 12 119 22| 6.8 0.0 6.8| 84.2 0.0 84.2 84.2 0.92| 8.0 7.4 1500 185 13 125 21| 5.2 0.0 5.2|102.9 0.0 102.9 68.6 0.87| 7.1 6.2 2000 193 15 131 20| 4.8 0.0 4.8|123.2 0.0 123.2 61.6 0.88| 6.6 5.8 2500 202 16 138 18| 4.6 0.0 4.6|143.1 0.0 143.1 57.2 0.89| 6.4 5.7 3000 211 17 146 17| 4.5 0.0 4.5|162.8 0.0 162.8 54.3 0.90| 6.3 5.7 4000 224 20 162 14| 3.8 0.0 3.8|175.5 0.0 175.5 43.9 0.89| 5.3 4.8 5000 231 22 176 13| 3.4 0.0 3.4|183.7 0.0 183.7 36.7 0.88| 4.6 4.0 6000 236 24 189 13| 3.0 0.0 3.0|191.2 -1.9 189.3 31.6 0.85| 4.1 3.5 Wrote GIF file: /home/apache/climate/data/raob//VVNB/skewt/VVNB.skewt.20250421.12.gif