UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025042711.upa.cvt Date: 1100Z 27 APR 25 Searching for YBBN... Searching the city database file for: YBBN ... Date:1100Z 27 APR 25 Station: YBBN WMO ident: 94578 Latitude: -27.38 Longitude: 153.10 Elevation: 5.00 ------------------------------------------------------------------------------- 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 5 21.8 12.8 57 9.0 16.2 260 12 294.1 295.8 288.9 320.6 9.23 1 1006 40 22.6 11.6 50 11.0 15.8 260 14 295.2 296.8 288.7 319.9 8.55 2 1000 92 22.2 11.2 50 11.0 15.4 260 16 295.4 296.9 288.6 319.6 8.37 3 925 764 17.2 10.2 63 7.0 13.0 250 32 296.9 298.4 289.2 321.5 8.47 4 850 1479 11.4 7.2 75 4.2 9.0 265 29 298.1 299.5 288.8 320.1 7.51 5 818 1798 8.6 5.4 80 3.2 6.8 266 29 298.4 299.7 288.3 318.7 6.89 6 790 2086 8.0 -3.0 46 11.0 2.8 261 30 300.8 301.5 286.2 312.5 3.88 7 750 2512 5.4 -5.6 45 11.0 0.5 257 29 302.4 303.1 286.3 312.7 3.36 8 741 2611 5.0 -6.0 45 11.0 0.1 260 28 303.0 303.7 286.5 313.2 3.29 9 700 3073 2.2 -13.8 29 16.0 -3.7 275 24 304.9 305.3 285.7 310.9 1.88 10 655 3607 0.0 -21.0 19 21.0 -6.5 251 25 308.3 308.5 286.0 311.9 1.09 11 527 5310 -11.9 -20.9 47 9.0 -14.5 262 42 313.8 314.0 288.2 318.4 1.37 12 500 5710 -14.7 -33.7 18 19.0 -18.3 265 50 315.1 315.2 287.6 316.7 0.44 13 494 5801 -15.1 -35.1 16 20.0 -18.7 266 50 315.7 315.8 287.8 317.1 0.39 14 440 6662 -21.5 -39.5 18 18.0 -24.0 276 70 318.3 318.3 288.5 319.3 0.28 15 435 6746 -18.9 -49.9 5 31.0 -22.5 277 73 322.6 322.6 289.6 322.9 0.09 16 409 7204 -18.7 -57.7 2 39.0 -22.7 280 86 328.6 328.6 291.3 328.7 0.04 17 406 7259 -17.3 -59.3 1 42.0 -21.7 280 86 331.1 331.1 292.0 331.2 0.03 18 400 7370 -17.5 -59.5 1 42.0 -21.8 280 88 332.2 332.2 292.3 332.4 0.03 19 353 8307 -17.9 -61.9 1 44.0 -22.5 265 105 343.8 343.8 295.3 343.9 0.03 20 300 9500 -28.1 -61.1 3 33.0 -30.6 270 123 345.8 345.8 295.7 345.9 0.03 21 295 9621 -29.3 -61.3 3 32.0 -31.6 273 124 345.7 345.8 295.7 345.9 0.03 22 291 9719 -30.0 -61.7 3 31.8 -32.2 275 125 346.1 346.1 295.8 346.3 0.03 23 250 10790 -37.5 -66.5 3 29.0 -38.8 275 122 350.3 350.3 296.7 350.4 0.02 24 225 11508 -42.3 -71.3 3 29.0 -43.3 277 123 353.7 353.7 297.4 353.7 0.01 25 200 12290 -49.3 -74.3 4 25.0 -49.8 280 124 354.7 354.7 297.7 354.7 0.01 26 172 13258 -58.1 -79.1 5 21.0 -58.3 273 119 355.8 355.8 297.8 355.8 0.00 27 155 13908 -61.7 -80.7 6 19.0 -61.9 272 107 360.4 360.4 298.8 360.4 0.00 28 150 14110 -62.9 -81.9 6 19.0 -63.0 275 96 361.7 361.7 299.0 361.7 0.00 29 100 16550 -74.3 -87.3 12 13.0 -74.3 285 57 384.2 384.2 302.9 384.2 0.00 30 99 16608 -74.3 -87.3 12 13.0 -74.3 280 58 385.3 385.3 303.1 385.3 0.00 31 85 17501 -71.3 -88.3 6 17.0 -71.3 279 38 408.5 408.5 306.3 408.5 0.00 32 75 18238 -72.5 -89.5 6 17.0 -72.6 273 19 420.9 420.9 307.8 420.9 0.00 33 70 18650 -65.1 -89.1 2 24.0 -65.3 270 8 445.1 445.1 310.4 445.1 0.00 34 69 18738 -63.9 -88.9 2 25.0 -64.1 263 8 449.5 449.5 310.8 449.5 0.00 35 59 19687 -67.1 -89.1 3 22.0 -67.3 181 10 462.9 462.9 312.0 462.9 0.00 36 50 20690 -64.1 -89.1 2 25.0 -64.4 95 11 492.4 492.4 314.4 492.4 0.00 37 39 22220 -61.7 -88.7 2 27.0 -62.3 534.8 534.8 317.2 534.8 0.00 38 36 22721 -57.7 -86.7 1 29.0 -58.7 557.5 557.5 318.5 557.5 0.01 39 31 23662 -58.9 -86.9 2 28.0 -59.9 578.6 578.6 319.6 578.7 0.01 TRP 99 16608 -74.3 -87.3 12 13.0 -74.3 280 58 385.3 385.3 303.1 385.3 0.00 WND 291 9719 -30.0 -61.7 3 31.8 -32.2 275 125 346.1 346.1 295.8 346.3 0.03 Sounding variables and indices 1000-500 mb thick: 5618.00 m Freezing level: 655.00 mb = 3607.02 m = 11833.92 ft Wetbulb zero: 739.53 mb = 2626.98 m = 8618.61 ft Precipitable water: 0.90 inches Sfc-500 mean rel hum: 44.76 % Est. max temperature: 25.63 C = 78.13 F Sfc-Lift cond lev (LCL): 884.25 mb = 1144.99 m = 3756.50 ft T: 14.11 C 700-500 lapse rate: 6.41 C/km ThetaE index: 9.03 C Layer 850.0- 750.0 mb Conv cond level (CCL): 785.62 mb = 2131.14 m = 6991.83 ft Mean mixing ratio: 8.44 g/kg Conv temperature: 28.64 C = 83.56 F Cap Strength: 2.38 C Lifted Index: 1.33 C Risk: Showers probable Lifted Index @300 mb: 18.35 C Lifted Index @700 mb: 1.51 C Showalter Index: 1.63 C Risk: Showers probable Total Totals Index: 48.00 C Risk: Scattered moderate thunderstorms Vertical Totals Index: 26.10 C Cross Totals Index: 21.90 C K Index: 17.30 Risk: < 20 % chance of thunderstorms Sweat Index: 194.40 Risk: None Energy Index: -0.63 Risk: Scattered severe thunderstorms Parcel Indices Parcel: using 100 mb layer CAPE (B+): 4.24 J/kg Max Up Vert Vel: 2.91 m/s Conv Inhibition (B-): 30563.85 J/kg Cap Strength: 2.32 C Lift Cond Lev (LCL): 841.40 mb = 1563.50 m = 5129.53 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 290 at 24 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 5 260 12 11.8 2.1 | 133 15 -11.2 10.4 1 1000 92 260 16 15.8 2.8 | 147 13 -7.3 11.1 2 976 305 245 31 28.1 13.1 | 193 22 5.1 21.4 3 925 764 250 32 30.1 10.9 | 200 21 7.0 19.3 4 909 914 255 34 32.8 8.8 | 210 20 9.8 17.1 5 850 1479 265 29 28.9 2.5 | 208 12 5.9 10.9 6 845 1524 270 29 29.0 -0.0 | 216 10 6.0 8.3 7 785 2134 260 30 29.5 5.2 | 206 15 6.5 13.5 8 756 2438 255 30 29.0 7.8 | 200 17 5.9 16.1 9 702 3048 275 24 23.9 -2.1 | 188 6 0.9 6.2 10 700 3073 275 24 23.9 -2.1 | 188 6 0.9 6.2 11 675 3353 255 20 19.3 5.2 | 165 14 -3.7 13.5 12 625 3962 245 33 29.9 13.9 | 197 23 6.9 22.3 13 601 4267 255 36 34.8 9.3 | 214 21 11.7 17.7 14 578 4572 270 38 38.0 -0.0 | 241 17 15.0 8.3 15 514 5486 260 43 42.3 7.5 | 231 25 19.3 15.8 16 500 5710 265 50 49.8 4.4 | 245 30 26.8 12.7 17 475 6096 270 48 48.0 -0.0 | 252 26 25.0 8.3 18 420 7010 280 83 81.7 -14.4 | 276 59 58.7 -6.1 19 400 7370 280 88 86.7 -15.3 | 276 64 63.6 -6.9 20 356 8230 265 104 103.6 9.1 | 258 82 80.6 17.4 21 302 9449 270 124 124.0 -0.0 | 265 101 101.0 8.3 22 300 9500 270 123 123.0 -0.0 | 265 100 100.0 8.3 23 291 9719 275 125 124.5 -10.9 | 271 102 101.5 -2.6 24 290 9754 275 125 124.5 -10.9 | 271 102 101.5 -2.6 25 250 10790 275 122 121.5 -10.6 | 271 99 98.5 -2.3 26 200 12290 280 124 122.1 -21.5 | 278 100 99.1 -13.2 27 160 13716 270 117 117.0 -0.0 | 265 94 94.0 8.3 28 150 14110 275 96 95.6 -8.4 | 270 73 72.6 -0.0 29 145 14326 280 98 96.5 -17.0 | 277 74 73.5 -8.7 30 124 15240 275 56 55.8 -4.9 | 264 33 32.8 3.5 31 112 15850 265 44 43.8 3.8 | 240 24 20.8 12.2 32 102 16459 290 41 38.5 -14.0 | 290 17 15.5 -5.7 33 100 16550 285 57 55.1 -14.8 | 281 33 32.0 -6.4 34 99 16608 280 58 57.1 -10.1 | 273 34 34.1 -1.7 35 96 16764 285 57 55.1 -14.8 | 281 33 32.0 -6.4 36 70 18650 270 8 8.0 -0.0 | 119 17 -15.0 8.3 37 50 20690 95 11 -11.0 1.0 | 105 35 -34.0 9.3 Wind Parameters Mean winds (0-6000m): 259.9 at 32.7 knts Storm direction: 289.9 at 24.5 knts Shear (0-3000m) pos: 3.4 neg: 3.9 tot: 7.3 10-3/s Storm rel Dir Shear (0-3000m): 58.3 deg Storm rel helicity (0-3000m) pos: 101.1 neg: -17.1 tot: 84.0 m^2/s^2 ave: 28.0 10^-3 m/s^2 rel: 0.35 Storm rel vorticity (0-3000m) horiz: 9.1 stream: 3.1 10^-3/s Energy-Hel index: 0.00 Bulk Rich Number: 0.36 Bulk Shear: 11.76 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 ------------------------------------------------------------------------------- 500 249 25 181 17| 0.0 20.5 20.5| 71.2 0.0 71.2 142.3 0.80| 22.2 17.9 1000 250 29 192 18| 2.9 10.2 13.1| 97.6 0.0 97.6 97.6 0.80| 14.3 11.5 1500 254 29 198 17| 3.8 6.8 10.6|100.0 -1.0 98.9 66.0 0.64| 12.1 7.8 2000 257 29 201 16| 2.9 5.7 8.5|101.0 -5.7 95.3 47.6 0.55| 10.1 5.6 2500 257 30 201 16| 2.3 4.7 7.0|101.0 -13.5 87.5 35.0 0.45| 9.0 4.1 3000 258 29 201 15| 3.4 3.9 7.3|101.1 -17.1 84.0 28.0 0.35| 9.1 3.1 4000 257 28 197 15| 2.5 4.9 7.4|147.0 -26.1 121.0 30.2 0.33| 9.6 3.1 5000 259 30 204 16| 3.1 4.2 7.3|223.8 -33.9 190.0 38.0 0.40| 9.7 3.8 6000 260 33 213 17| 3.2 3.9 7.1|288.1 -43.9 244.2 40.7 0.40| 9.4 3.8 Wrote GIF file: /home/apache/climate/data/raob//YBBN/skewt/YBBN.skewt.20250427.11.gif