UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025042523.upa.cvt Date: 2300Z 25 APR 25 Searching for HKNC... Searching the city database file for: HKNC ... Date:2300Z 25 APR 25 Station: HKNC WMO ident: 63741 Latitude: -1.30 Longitude: 36.75 Elevation: 1798.00 ------------------------------------------------------------------------------- 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 823 1798 16.6 15.0 90 1.6 15.5 80 3 306.4 308.8 295.7 345.8 13.14 1 794 2101 13.6 13.5 99 0.1 13.6 81 3 306.3 308.6 295.1 343.4 12.35 2 730 2802 9.6 7.8 89 1.8 8.5 84 4 309.4 311.1 293.6 337.3 9.14 3 706 3078 8.6 5.6 81 3.0 6.8 86 4 311.2 312.8 293.4 336.3 8.11 4 688 3291 9.0 -6.0 34 15.0 1.8 87 5 314.0 314.7 290.4 325.4 3.55 5 674 3461 8.2 -1.8 49 10.0 2.9 87 5 315.0 315.9 291.9 330.8 4.98 6 663 3596 8.6 -8.4 29 17.0 0.8 88 5 316.9 317.5 290.8 326.9 3.06 7 656 3684 8.4 -13.6 19 22.0 -0.7 88 5 317.6 318.0 290.1 324.4 2.04 8 629 4028 5.2 -2.8 56 8.0 1.1 90 5 317.8 318.8 292.7 333.7 4.95 9 616 4199 5.8 -19.2 15 25.0 -3.3 91 5 320.4 320.7 290.3 325.1 1.36 10 608 4306 5.2 -21.8 12 27.0 -4.1 91 6 320.9 321.1 290.2 324.7 1.10 11 589 4564 4.4 -15.6 22 20.0 -3.6 92 6 322.9 323.3 291.6 329.5 1.93 12 522 5530 -4.1 -14.1 46 10.0 -8.0 97 7 324.0 324.5 292.3 332.3 2.46 13 509 5728 -6.1 -9.6 76 3.5 -7.6 98 7 323.9 324.7 293.3 336.0 3.63 14 493 5977 -7.7 -12.2 70 4.5 -9.5 99 7 325.0 325.6 293.1 335.2 3.04 15 475 6267 -7.5 -30.5 14 23.0 -13.3 100 8 328.7 328.8 292.0 331.0 0.64 16 461 6499 -9.3 -21.3 37 12.0 -13.2 102 8 329.3 329.6 293.0 334.6 1.51 17 444 6789 -9.9 -30.9 16 21.0 -15.1 103 8 332.1 332.2 292.9 334.5 0.65 18 400 7584 -16.1 -33.1 22 17.0 -19.7 107 9 334.1 334.2 293.4 336.3 0.59 19 367 8226 -20.9 -38.9 18 18.0 -23.9 110 10 336.0 336.1 293.7 337.4 0.36 20 353 8513 -20.7 -48.7 6 28.0 -24.4 112 10 340.0 340.1 294.4 340.6 0.13 21 256 10809 -37.7 -53.7 17 16.0 -38.8 123 13 347.6 347.7 296.2 348.1 0.10 22 234 11421 -43.1 -58.1 18 15.0 -43.8 127 14 348.5 348.5 296.4 348.8 0.06 23 209 12175 -47.7 -66.7 9 19.0 -48.3 131 14 352.8 352.8 297.3 352.9 0.02 24 183 13037 -55.5 -65.5 28 10.0 -55.7 136 16 353.8 353.8 297.5 353.9 0.03 25 171 13465 -59.5 -62.5 68 3.0 -59.6 139 16 354.1 354.1 297.5 354.3 0.05 26 158 13955 -63.9 -68.2 56 4.3 -64.0 141 17 354.7 354.7 297.7 354.8 0.02 27 108 16191 -81.1 -87.1 36 6.0 -81.1 156 20 363.0 363.0 299.2 363.0 0.00 28 105 16349 -82.5 -88.5 35 6.0 -82.5 157 20 363.2 363.2 299.3 363.2 0.00 29 96 16847 -83.9 -88.9 41 5.0 -83.9 160 21 369.9 369.9 300.5 369.9 0.00 30 79 17956 -73.9 -76.9 63 3.0 -73.9 225 22 411.8 411.8 306.7 411.9 0.01 31 70 18660 -75.1 -81.1 39 6.0 -75.2 265 23 423.7 423.7 308.2 423.8 0.01 32 57 19857 -73.7 -82.7 24 9.0 -73.7 259 21 452.5 452.5 311.1 452.6 0.01 33 50 20640 -65.1 -83.1 7 18.0 -65.4 255 19 490.1 490.1 314.2 490.1 0.01 TRP 96 16847 -83.9 -88.9 41 5.0 -83.9 160 21 369.9 369.9 300.5 369.9 0.00 WND Sounding variables and indices Freezing level: 554.32 mb = 5064.25 m = 16614.78 ft Wetbulb zero: 659.27 mb = 3642.93 m = 11951.73 ft Precipitable water: 0.81 inches Sfc-500 mean rel hum: 54.90 % Est. max temperature: 24.90 C = 76.83 F Sfc-Lift cond lev (LCL): 803.84 mb = 1996.86 m = 6551.31 ft T: 14.63 C 700-500 lapse rate: 5.78 C/km ThetaE index: 20.47 C Layer 794.0- 674.0 mb Conv cond level (CCL): 755.75 mb = 2512.47 m = 8242.91 ft Mean mixing ratio: 11.17 g/kg Conv temperature: 18.27 C = 64.89 F Cap Strength: 3.38 C Lifted Index: -0.74 C Risk: Thunderstorms probable Lifted Index @300 mb: 4.01 C Lifted Index @700 mb: 0.66 C Parcel Indices Parcel: using 100 mb layer CAPE (B+): 26.94 J/kg Max Up Vert Vel: 7.34 m/s Conv Inhibition (B-): 1.06 J/kg Cap Strength: 3.33 C Lift Cond Lev (LCL): 761.78 mb = 2446.15 m = 8025.34 ft Lev Free Conv (LFC): 736.78 mb = 2724.39 m = 8938.17 ft Equ Level (EL): 716.78 mb = 2952.52 m = 9686.63 ft B at Equ Level: 17.56 J/kg Max Parcel Lev (MPL): 676.78 mb = 3426.66 m = 11242.18 ft Wind level data Storm motion: 182 at 9 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 ---------------------------------------------------------- 0 823 1798 80 3 -3.0 -0.5 | 19 10 -3.3 -9.5 1 96 16847 160 21 -7.2 19.7 | 145 13 -7.5 10.7 2 70 18660 265 23 22.9 2.0 | 287 24 22.6 -7.0 3 50 20640 255 19 18.4 4.9 | 283 18 18.0 -4.1 Wind Parameters Mean winds (0-6000m): 152.2 at 12.0 knts Storm direction: 182.2 at 9.0 knts Storm rel Dir Shear (0-3000m): 25.9 deg Storm rel helicity (0-3000m) pos: 0.0 neg: 0.0 tot: 0.0 m^2/s^2 ave: 0.0 10^-3 m/s^2 rel: 0.00 Storm rel vorticity (0-3000m) horiz: 0.0 stream: 0.0 10^-3/s Energy-Hel index: 0.00 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 NO DATA | | | 1000 NO DATA | | | 1500 NO DATA | | | 2000 NO DATA | | | 2500 NO DATA | | | 3000 NO DATA | | | 4000 NO DATA | | | 5000 NO DATA | | | 6000 NO DATA | | | Wrote GIF file: /home/apache/climate/data/raob//HKNC/skewt/HKNC.skewt.20250425.23.gif