UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025050623.upa.cvt Date: 2300Z 6 MAY 25 Searching for HKNC... Searching the city database file for: HKNC ... Date:2300Z 6 MAY 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 824 1798 15.6 14.8 95 0.8 15.1 0 0 305.2 307.6 295.3 343.9 12.96 1 795 2101 14.2 14.0 99 0.2 14.1 358 0 306.8 309.2 295.6 345.2 12.75 2 664 3594 4.8 4.1 95 0.7 4.4 348 1 312.5 314.0 293.4 336.6 7.76 3 623 4111 2.2 1.0 92 1.2 1.5 344 1 315.3 316.5 293.3 336.1 6.62 4 617 4189 2.4 1.2 92 1.2 1.7 344 1 316.4 317.7 293.8 337.8 6.78 5 581 4673 0.0 -1.3 91 1.3 -0.7 341 1 319.0 320.2 293.9 338.3 6.00 6 500 5866 -4.3 -11.3 58 7.0 -7.3 332 2 327.8 328.4 294.0 338.7 3.23 7 495 5945 -4.5 -10.5 63 6.0 -7.1 332 2 328.5 329.2 294.4 340.3 3.47 8 476 6252 -7.1 -10.3 78 3.2 -8.5 330 2 329.0 329.7 294.7 341.4 3.67 9 442 6826 -10.7 -20.7 44 10.0 -14.0 325 3 331.5 331.8 293.7 337.4 1.66 10 423 7163 -12.7 -15.9 77 3.2 -13.9 323 3 333.1 333.6 294.8 342.2 2.62 11 384 7894 -17.9 -19.0 91 1.1 -18.3 318 3 335.6 336.1 295.1 343.5 2.22 12 360 8375 -20.3 -35.3 25 15.0 -23.2 314 4 338.7 338.8 294.5 340.7 0.53 13 334 8926 -24.1 -30.1 58 6.0 -25.4 310 4 340.8 341.0 295.4 344.3 0.94 14 312 9421 -26.9 -36.9 38 10.0 -28.6 306 4 343.6 343.7 295.7 345.6 0.52 15 283 10115 -33.7 -38.7 61 5.0 -34.4 301 5 343.6 343.7 295.6 345.4 0.48 16 257 10784 -39.3 -48.3 38 9.0 -40.0 295 5 344.9 344.9 295.7 345.7 0.19 17 237 11334 -43.3 -54.3 29 11.0 -43.9 291 5 346.9 347.0 296.0 347.4 0.10 18 200 12453 -53.3 -58.3 54 5.0 -53.5 281 6 348.4 348.4 296.3 348.7 0.07 19 175 13299 -60.5 -66.5 45 6.0 -60.6 274 7 350.1 350.1 296.7 350.2 0.03 20 163 13738 -63.7 -72.7 28 9.0 -63.8 270 7 351.9 351.9 297.0 351.9 0.01 21 124 15365 -76.5 -82.5 38 6.0 -76.5 255 8 357.3 357.3 298.1 357.3 0.00 22 111 15998 -79.7 -85.7 36 6.0 -79.7 249 9 362.7 362.7 299.2 362.8 0.00 23 101 16543 -72.7 -77.4 49 4.7 -72.8 244 9 386.2 386.2 303.2 386.2 0.01 24 89 17281 -75.3 -84.3 23 9.0 -75.3 237 9 395.2 395.2 304.5 395.2 0.00 25 79 17967 -78.3 -87.3 22 9.0 -78.3 230 10 402.7 402.7 305.6 402.7 0.00 26 75 18267 -73.5 -81.5 28 8.0 -73.6 256 10 418.8 418.8 307.6 418.8 0.01 27 70 18670 -74.1 -84.1 20 10.0 -74.2 290 9 425.9 425.9 308.4 425.9 0.00 28 56 19985 -72.1 -92.1 3 20.0 -72.2 273 14 458.5 458.5 311.6 458.5 0.00 29 50 20670 -63.7 -91.7 1 28.0 -64.1 265 17 493.4 493.4 314.5 493.4 0.00 30 34 23054 -57.5 -87.5 1 30.0 -58.6 171 10 567.2 567.2 319.0 567.2 0.01 31 30 23830 -63.1 -92.1 1 29.0 -63.7 140 8 572.6 572.6 319.3 572.6 0.00 32 29 24040 -63.3 -91.3 1 28.0 -64.0 135 11 577.6 577.6 319.5 577.7 0.00 33 20 26390 -53.9 -84.9 1 31.0 -56.3 80 47 671.2 671.2 323.4 671.3 0.01 TRP 79 17967 -78.3 -87.3 22 9.0 -78.3 230 10 402.7 402.7 305.6 402.7 0.00 WND Sounding variables and indices Freezing level: 581.00 mb = 4672.71 m = 15330.23 ft Wetbulb zero: 591.24 mb = 4532.13 m = 14869.03 ft Precipitable water: 1.21 inches Sfc-500 mean rel hum: 88.99 % Est. max temperature: 22.07 C = 71.72 F Sfc-Lift cond lev (LCL): 814.40 mb = 1897.03 m = 6223.78 ft T: 15.14 C 700-500 lapse rate: 4.38 C/km Conv cond level (CCL): 765.06 mb = 2419.00 m = 7936.27 ft Mean mixing ratio: 11.75 g/kg Conv temperature: 18.32 C = 64.97 F Cap Strength: 0.19 C Lifted Index: 1.19 C Risk: Showers probable Lifted Index @300 mb: 2.57 C Lifted Index @700 mb: -1.08 C Parcel Indices Parcel: using 100 mb layer CAPE (B+): 121.21 J/kg Max Up Vert Vel: 15.57 m/s Conv Inhibition (B-): 0.36 J/kg Cap Strength: 0.89 C Lift Cond Lev (LCL): 769.27 mb = 2373.53 m = 7787.08 ft Lev Free Conv (LFC): 754.27 mb = 2536.80 m = 8322.72 ft Equ Level (EL): 534.27 mb = 5339.01 m = 17516.23 ft B at Equ Level: 120.37 J/kg Max Parcel Lev (MPL): 334.27 mb = 8920.16 m = 29265.26 ft Wind level data Storm motion: 260 at 4 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 ---------------------------------------------------------- 0 824 1798 0 0 -0.0 -0.0 | 80 4 -3.7 -0.7 1 79 17967 230 10 7.7 6.4 | 214 7 4.0 5.8 2 70 18670 290 9 8.5 -3.1 | 308 6 4.8 -3.7 3 50 20670 265 17 16.9 1.5 | 266 13 13.2 0.8 4 30 23830 140 8 -5.1 6.1 | 122 10 -8.8 5.5 5 20 26390 80 47 -46.3 -8.2 | 80 51 -50.0 -8.8 Wind Parameters Mean winds (0-6000m): 230.0 at 5.0 knts Storm direction: 260.0 at 3.8 knts Storm rel Dir Shear (0-3000m): -35.0 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.20250506.23.gif