UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025041623.upa.cvt Date: 2300Z 16 APR 25 Searching for HKNC... Searching the city database file for: HKNC ... Date:2300Z 16 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 17.6 15.6 88 2.0 16.3 0 0 307.4 310.0 296.3 348.7 13.67 1 794 2103 14.8 14.1 96 0.7 14.3 359 0 307.6 310.0 295.8 346.4 12.85 2 763 2438 13.2 13.2 100 0.0 13.2 357 0 309.4 311.8 296.1 347.7 12.61 3 756 2515 11.2 10.5 95 0.7 10.7 357 1 308.0 310.0 294.4 340.2 10.61 4 663 3602 6.6 -5.4 42 12.0 0.8 353 1 314.6 315.4 290.9 327.0 3.86 5 658 3664 7.0 -5.0 42 12.0 1.1 352 1 315.8 316.5 291.3 328.6 4.01 6 625 4085 5.2 -7.8 38 13.0 -0.8 351 2 318.4 319.1 291.6 329.5 3.40 7 616 4204 4.8 -14.2 24 19.0 -2.9 350 2 319.3 319.7 290.6 326.2 2.07 8 609 4297 4.8 -22.2 12 27.0 -4.4 350 2 320.3 320.5 290.0 324.0 1.06 9 531 5400 -2.3 -14.3 39 12.0 -7.1 345 3 324.6 325.1 292.4 332.7 2.38 10 485 6116 -5.5 -38.5 5 33.0 -12.6 342 3 329.2 329.2 291.8 330.3 0.28 11 471 6345 -7.1 -19.1 38 12.0 -11.3 341 4 330.0 330.3 293.4 336.3 1.79 12 447 6752 -8.7 -19.7 41 11.0 -12.5 339 4 332.9 333.3 294.1 339.3 1.79 13 409 7433 -14.5 -23.5 46 9.0 -17.1 336 5 334.0 334.3 294.1 339.1 1.41 14 400 7602 -15.5 -26.5 38 11.0 -18.4 335 5 334.8 335.1 294.0 338.8 1.10 15 379 8007 -18.1 -39.1 14 21.0 -21.8 333 5 336.6 336.7 293.8 337.9 0.34 16 367 8247 -19.7 -28.7 45 9.0 -21.8 332 5 337.6 337.8 294.6 341.2 0.97 17 323 9186 -25.1 -48.1 10 23.0 -27.9 328 6 342.7 342.7 295.1 343.3 0.15 18 300 9718 -29.3 -51.3 10 22.0 -31.4 325 7 344.1 344.1 295.4 344.6 0.11 19 257 10803 -38.5 -44.5 53 6.0 -39.1 320 8 346.1 346.1 296.0 347.2 0.28 20 238 11328 -42.1 -55.1 23 13.0 -42.8 317 8 348.3 348.4 296.4 348.7 0.09 21 200 12479 -52.7 -53.8 88 1.1 -52.7 311 9 349.3 349.3 296.6 349.8 0.13 22 137 14818 -71.7 -76.7 47 5.0 -71.7 298 12 355.7 355.7 297.8 355.7 0.01 23 128 15217 -73.7 -79.7 39 6.0 -73.7 296 12 359.1 359.1 298.5 359.1 0.01 24 102 16514 -82.7 -88.7 35 6.0 -82.7 288 14 365.9 365.9 299.8 365.9 0.00 25 81 17811 -79.7 -84.3 46 4.6 -79.7 280 15 397.0 397.0 304.8 397.0 0.00 26 75 18255 -72.7 -76.4 57 3.7 -72.8 277 16 420.5 420.5 307.8 420.6 0.02 27 70 18660 -72.5 -79.5 34 7.0 -72.6 275 16 429.3 429.3 308.7 429.3 0.01 28 62 19373 -73.7 -84.7 17 11.0 -73.7 280 20 441.8 441.8 310.1 441.8 0.00 29 50 20640 -71.1 -91.1 4 20.0 -71.2 290 27 475.9 475.9 313.1 476.0 0.00 30 45 21260 -72.9 -98.9 1 26.0 -73.0 286 25 486.1 486.1 314.0 486.1 0.00 31 37 22449 -57.9 -87.9 1 30.0 -58.9 280 20 552.6 552.6 318.2 552.7 0.00 32 32 23352 -63.3 -91.3 1 28.0 -63.9 275 17 561.6 561.6 318.7 561.6 0.00 33 30 23750 -60.9 -89.9 1 29.0 -61.7 230 36 578.6 578.6 319.6 578.6 0.00 TRP 32 23352 -63.3 -91.3 1 28.0 -63.9 275 17 561.6 561.6 318.7 561.6 0.00 WND Sounding variables and indices Freezing level: 556.27 mb = 5042.86 m = 16544.61 ft Wetbulb zero: 638.95 mb = 3904.63 m = 12810.32 ft Precipitable water: 0.83 inches Sfc-500 mean rel hum: 50.54 % Est. max temperature: 23.73 C = 74.71 F Sfc-Lift cond lev (LCL): 799.14 mb = 2047.81 m = 6718.46 ft T: 15.30 C 700-500 lapse rate: 4.75 C/km ThetaE index: 20.70 C Layer 756.0- 658.0 mb Conv cond level (CCL): 758.13 mb = 2491.82 m = 8175.17 ft Mean mixing ratio: 11.55 g/kg Conv temperature: 18.58 C = 65.44 F Cap Strength: 1.67 C Lifted Index: 0.95 C Risk: Showers probable Lifted Index @300 mb: 2.73 C Lifted Index @700 mb: -0.25 C Parcel Indices Parcel: using 100 mb layer CAPE (B+): 18.83 J/kg Max Up Vert Vel: 6.14 m/s Conv Inhibition (B-): 1.01 J/kg Cap Strength: 1.65 C Lift Cond Lev (LCL): 758.08 mb = 2492.42 m = 8177.13 ft Lev Free Conv (LFC): 753.08 mb = 2547.46 m = 8357.69 ft Equ Level (EL): 663.08 mb = 3600.81 m = 11813.52 ft B at Equ Level: 17.32 J/kg Max Parcel Lev (MPL): 613.08 mb = 4242.62 m = 13919.19 ft Wind level data Storm motion: 305 at 6 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 0 0 -0.0 -0.0 | 125 6 -4.9 3.4 1 70 18660 275 16 15.9 -1.4 | 259 11 11.0 2.0 2 50 20640 290 27 25.4 -9.2 | 286 21 20.5 -5.8 3 32 23352 275 17 16.9 -1.5 | 261 12 12.0 2.0 4 30 23750 230 36 27.6 23.1 | 220 35 22.7 26.6 Wind Parameters Mean winds (0-6000m): 275.0 at 8.0 knts Storm direction: 305.0 at 6.0 knts Storm rel Dir Shear (0-3000m): -80.0 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.20250416.23.gif