UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025042012.upa.cvt Date: 1200Z 20 APR 25 Searching for VVNB... Searching the city database file for: VVNB ... Date:1200Z 20 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 1006 6 28.6 24.3 78 4.3 25.4 115 1 301.2 304.8 298.4 358.3 19.35 1 1000 56 28.2 24.2 79 4.0 25.2 130 7 301.4 304.9 298.4 358.5 19.35 2 955 464 24.2 23.0 93 1.2 23.3 165 14 301.3 304.7 298.1 356.8 18.83 3 925 746 26.2 22.4 80 3.8 23.4 190 19 306.1 309.6 299.2 362.5 18.75 4 916 833 26.6 21.6 74 5.0 22.9 193 19 307.4 310.7 299.0 361.8 18.01 5 896 1028 26.0 19.0 65 7.0 21.0 201 19 308.7 311.6 297.9 356.1 15.62 6 850 1491 22.4 17.6 74 4.8 19.0 220 19 309.6 312.5 297.8 355.5 15.07 7 815 1856 20.2 15.2 73 5.0 16.7 222 21 311.0 313.6 297.1 352.2 13.45 8 801 2006 20.2 12.2 60 8.0 14.8 223 21 312.6 314.7 296.0 347.2 11.22 9 728 2823 13.6 7.6 67 6.0 9.9 228 25 314.0 315.7 294.8 342.1 9.04 10 700 3153 11.0 8.5 85 2.5 9.4 230 27 314.7 316.6 295.7 345.8 10.01 11 675 3456 8.8 7.3 90 1.5 7.9 231 27 315.5 317.3 295.6 345.4 9.56 12 667 3554 8.0 6.5 90 1.5 7.1 231 27 315.7 317.4 295.3 344.3 9.15 13 560 4979 0.4 -3.9 73 4.3 -1.8 237 28 322.9 323.9 294.2 339.6 5.12 14 500 5880 -5.3 -5.7 97 0.4 -5.5 240 29 326.6 327.6 295.1 343.2 5.01 15 494 5975 -5.7 -6.1 97 0.4 -5.9 240 29 327.2 328.2 295.2 343.6 4.92 16 471 6350 -6.9 -10.3 77 3.4 -8.4 240 30 330.2 331.0 295.0 342.8 3.71 17 446 6775 -9.1 -11.8 81 2.7 -10.2 240 31 332.6 333.3 295.4 344.6 3.48 18 407 7478 -14.7 -15.7 92 1.0 -15.1 240 33 334.2 334.8 295.3 343.9 2.77 19 401 7591 -15.7 -17.8 84 2.1 -16.4 240 33 334.3 334.8 295.0 342.6 2.35 20 400 7610 -15.5 -20.5 65 5.0 -17.1 240 33 334.8 335.2 294.7 341.5 1.87 21 399 7629 -14.9 -23.9 46 9.0 -17.5 240 33 335.9 336.1 294.6 340.9 1.39 22 390 7801 -15.3 -37.3 13 22.0 -19.7 241 33 337.5 337.6 294.1 339.1 0.40 23 389 7821 -15.5 -33.5 20 18.0 -19.4 241 33 337.5 337.6 294.3 339.7 0.58 24 388 7840 -15.7 -22.7 55 7.0 -17.8 242 33 337.5 337.8 295.1 343.3 1.59 25 381 7977 -17.1 -25.1 50 8.0 -19.3 243 33 337.4 337.7 294.8 342.2 1.31 26 374 8116 -18.1 -42.1 10 24.0 -22.0 244 33 337.9 337.9 294.0 338.9 0.25 27 371 8176 -18.5 -33.5 26 15.0 -21.7 244 32 338.1 338.3 294.4 340.5 0.61 28 365 8297 -19.3 -44.3 9 25.0 -23.1 245 32 338.7 338.7 294.2 339.5 0.20 29 355 8503 -20.5 -42.5 12 22.0 -23.9 246 32 339.7 339.8 294.5 340.8 0.25 30 353 8545 -20.9 -28.9 49 8.0 -22.8 247 32 339.8 340.0 295.1 343.5 0.99 31 352 8566 -20.7 -39.7 17 19.0 -23.9 247 32 340.3 340.4 294.7 341.7 0.34 32 327 9107 -24.5 -48.5 9 24.0 -27.4 251 32 342.3 342.3 295.0 342.9 0.14 33 326 9129 -24.5 -29.0 66 4.5 -25.5 251 32 342.6 342.8 295.9 346.6 1.07 34 323 9196 -24.3 -41.3 19 17.0 -26.9 251 32 343.8 343.9 295.5 345.1 0.32 35 322 9219 -24.5 -38.5 26 14.0 -26.8 251 31 343.8 343.9 295.6 345.5 0.43 36 309 9518 -26.9 -30.4 72 3.5 -27.6 253 31 344.5 344.8 296.3 348.3 0.99 37 302 9682 -28.3 -34.3 56 6.0 -29.4 255 31 344.8 345.0 296.1 347.5 0.69 38 300 9730 -28.5 -40.5 31 12.0 -30.2 255 31 345.2 345.3 295.9 346.7 0.37 39 299 9754 -28.5 -42.5 25 14.0 -30.4 255 31 345.5 345.6 295.9 346.8 0.30 40 280 10217 -32.9 -35.5 77 2.6 -33.3 255 33 345.8 345.9 296.3 348.3 0.66 41 275 10343 -33.9 -37.2 72 3.3 -34.4 255 33 346.1 346.2 296.3 348.3 0.57 42 270 10471 -34.9 -54.9 11 20.0 -36.4 255 33 346.5 346.5 295.9 346.8 0.08 43 262 10679 -36.7 -38.8 81 2.1 -37.0 255 34 346.8 346.9 296.4 348.8 0.51 44 252 10946 -38.5 -42.2 68 3.7 -38.9 255 35 348.0 348.1 296.5 349.5 0.37 45 250 11000 -38.9 -44.9 53 6.0 -39.5 255 35 348.2 348.3 296.5 349.4 0.28 46 249 11028 -39.1 -47.1 42 8.0 -39.8 255 35 348.3 348.4 296.5 349.2 0.22 47 245 11139 -39.9 -40.8 91 0.9 -40.0 256 35 348.8 348.8 296.7 350.5 0.44 48 239 11309 -41.3 -44.7 70 3.4 -41.6 258 35 349.1 349.2 296.7 350.3 0.30 49 233 11482 -42.7 -59.7 14 17.0 -43.5 260 35 349.6 349.6 296.6 349.8 0.05 50 229 11599 -43.3 -46.2 73 2.9 -43.5 261 35 350.4 350.4 297.0 351.5 0.26 51 222 11808 -45.1 -53.1 40 8.0 -45.5 263 35 350.7 350.8 296.9 351.3 0.12 52 217 11960 -46.3 -50.8 60 4.5 -46.6 265 35 351.2 351.2 297.0 351.9 0.17 53 212 12115 -47.3 -64.3 13 17.0 -47.9 266 35 352.0 352.0 297.1 352.1 0.03 54 205 12338 -48.9 -60.9 23 12.0 -49.3 268 35 352.8 352.8 297.3 353.1 0.05 55 201 12467 -50.1 -54.4 60 4.3 -50.3 270 35 352.9 353.0 297.4 353.4 0.12 56 200 12500 -50.3 -55.2 56 4.9 -50.5 270 35 353.1 353.1 297.4 353.6 0.11 57 194 12697 -51.9 -56.9 55 5.0 -52.1 273 35 353.6 353.7 297.5 354.0 0.09 58 150 14310 -64.7 -69.7 50 5.0 -64.8 300 33 358.6 358.6 298.4 358.7 0.02 59 100 16690 -80.1 -86.1 36 6.0 -80.1 345 13 373.0 373.0 301.1 373.0 0.00 TRP WND Sounding variables and indices 1000-500 mb thick: 5824.00 m Freezing level: 555.79 mb = 5042.21 m = 16542.49 ft Wetbulb zero: 581.73 mb = 4668.80 m = 15317.40 ft Precipitable water: 2.47 inches Sfc-500 mean rel hum: 78.06 % Est. max temperature: 36.87 C = 98.37 F Sfc-Lift cond lev (LCL): 945.58 mb = 551.65 m = 1809.84 ft T: 24.82 C 700-500 lapse rate: 5.98 C/km ThetaE index: 20.34 C Layer 916.0- 700.0 mb Conv cond level (CCL): 819.10 mb = 1812.55 m = 5946.62 ft Mean mixing ratio: 18.77 g/kg Conv temperature: 38.24 C = 100.82 F Cap Strength: 4.36 C Lifted Index: -5.38 C Risk: Severe thunderstorms probable Lifted Index @300 mb: -4.79 C Lifted Index @700 mb: -1.91 C Showalter Index: -4.21 C Risk: Severe thunderstorms possible Total Totals Index: 50.60 C Risk: Scattered heavy thunderstorms Vertical Totals Index: 27.70 C Cross Totals Index: 22.90 C K Index: 42.80 Risk: > 80 % chance of thunderstorms Sweat Index: 377.95 Risk: Showers and thunderstorms possible Energy Index: -2.44 Risk: Severe Thunderstorms probable Parcel Indices Parcel: using 100 mb layer CAPE (B+): 1841.79 J/kg Max Up Vert Vel: 60.69 m/s Conv Inhibition (B-): 157.86 J/kg Cap Strength: 4.33 C Lift Cond Lev (LCL): 912.87 mb = 862.84 m = 2830.79 ft Lev Free Conv (LFC): 737.87 mb = 2707.90 m = 8884.09 ft Equ Level (EL): 147.87 mb = 14393.83 m = 47223.26 ft B at Equ Level: 1836.78 J/kg Wind level data Storm motion: 257 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 1006 6 115 1 -0.9 0.4 | 79 19 -18.3 -3.6 1 1000 56 130 7 -5.4 4.5 | 91 23 -22.7 0.5 2 925 746 190 19 3.3 18.7 | 136 20 -14.1 14.7 3 850 1491 220 19 12.2 14.6 | 154 12 -5.2 10.6 4 700 3153 230 27 20.7 17.4 | 194 14 3.3 13.4 5 500 5880 240 29 25.1 14.5 | 216 13 7.7 10.5 6 400 7610 240 33 28.6 16.5 | 222 17 11.2 12.5 7 300 9730 255 31 29.9 8.0 | 252 13 12.6 4.0 8 250 11000 255 35 33.8 9.1 | 253 17 16.4 5.1 9 200 12500 270 35 35.0 -0.0 | 283 18 17.6 -4.0 10 150 14310 300 33 28.6 -16.5 | 331 23 11.2 -20.5 11 100 16690 345 13 3.4 -12.6 | 40 22 -14.0 -16.5 Wind Parameters Mean winds (0-6000m): 227.1 at 23.8 knts Storm direction: 257.1 at 17.8 knts Shear (0-3000m) pos: 4.6 neg: 0.0 tot: 4.6 10-3/s Storm rel Dir Shear (0-3000m): 111.8 deg Storm rel helicity (0-3000m) pos: 176.2 neg: 0.0 tot: 176.2 m^2/s^2 ave: 58.7 10^-3 m/s^2 rel: 0.83 Storm rel vorticity (0-3000m) horiz: 7.2 stream: 6.0 10^-3/s Energy-Hel index: 1.83 Bulk Rich Number: 27.07 Bulk Shear: 68.04 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 ------------------------------------------------------------------------------- 500 156 10 104 22| 14.7 0.0 14.7| 88.7 0.0 88.7 177.5 0.90| 17.3 15.5 1000 182 14 121 20| 9.7 0.0 9.7|138.5 0.0 138.5 138.5 0.87| 14.2 12.4 1500 194 16 130 18| 6.6 0.0 6.6|150.5 0.0 150.5 100.3 0.80| 11.7 9.3 2000 202 17 137 16| 5.6 0.0 5.6|158.7 0.0 158.7 79.4 0.81| 9.5 7.7 2500 209 18 144 15| 5.0 0.0 5.0|167.2 0.0 167.2 66.9 0.82| 8.1 6.7 3000 213 19 151 14| 4.6 0.0 4.6|176.2 0.0 176.2 58.7 0.83| 7.2 6.0 4000 219 21 162 13| 3.6 0.0 3.6|184.6 0.0 184.6 46.1 0.84| 5.7 4.8 5000 224 23 172 13| 3.0 0.0 3.0|191.3 0.0 191.3 38.3 0.84| 4.8 4.0 6000 227 24 180 12| 2.6 0.0 2.6|197.7 0.0 197.7 33.0 0.85| 4.2 3.5 Wrote GIF file: /home/apache/climate/data/raob//VVNB/skewt/VVNB.skewt.20250420.12.gif