UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025041523.upa.cvt Date: 2300Z 15 APR 25 Searching for HKNC... Searching the city database file for: HKNC ... Date:2300Z 15 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 824 1798 16.6 14.8 89 1.8 15.4 0 0 306.2 308.7 295.6 345.2 12.96 1 795 2101 14.2 13.8 97 0.4 14.0 1 0 306.8 309.2 295.4 344.7 12.58 2 757 2511 11.0 10.9 99 0.1 10.9 3 1 307.7 309.7 294.5 340.6 10.89 3 706 3092 11.0 2.0 54 9.0 5.9 6 2 313.9 315.1 292.7 333.6 6.27 4 664 3599 7.4 0.4 61 7.0 3.6 9 3 315.4 316.5 292.9 334.2 5.94 5 656 3698 6.6 -1.4 57 8.0 2.4 9 3 315.6 316.6 292.3 332.3 5.27 6 617 4199 5.0 -10.0 33 15.0 -1.7 11 3 319.3 319.9 291.4 328.9 2.90 7 574 4784 1.4 -10.6 40 12.0 -3.8 14 4 321.8 322.4 292.2 331.7 2.97 8 561 4968 0.6 -26.4 11 27.0 -7.5 15 4 323.0 323.1 290.5 325.8 0.79 9 549 5141 -0.9 -9.9 50 9.0 -4.9 16 5 323.2 323.8 292.8 334.1 3.28 10 535 5347 -1.5 -25.5 14 24.0 -8.8 17 5 324.9 325.0 291.2 328.1 0.90 11 511 5711 -3.5 -25.5 16 22.0 -10.1 19 6 326.7 326.9 291.7 330.1 0.94 12 489 6057 -5.1 -16.1 42 11.0 -9.3 21 6 328.9 329.4 293.4 336.6 2.23 13 422 7197 -13.1 -18.1 66 5.0 -14.8 26 8 332.8 333.3 294.4 340.5 2.18 14 400 7603 -15.9 -22.9 55 7.0 -18.0 29 8 334.3 334.6 294.3 339.8 1.52 15 383 7930 -16.7 -35.7 18 19.0 -20.5 30 9 337.4 337.5 294.1 339.3 0.48 16 349 8622 -21.5 -32.5 36 11.0 -23.8 34 10 340.1 340.2 295.0 342.8 0.71 17 335 8923 -22.7 -39.7 20 17.0 -25.5 36 10 342.4 342.5 295.3 343.8 0.36 18 292 9914 -31.1 -42.1 33 11.0 -32.5 41 12 344.2 344.3 295.6 345.5 0.32 19 257 10806 -38.1 -49.1 31 11.0 -39.0 46 14 346.7 346.7 296.0 347.4 0.17 20 200 12481 -52.1 -64.1 22 12.0 -52.4 56 16 350.3 350.3 296.7 350.4 0.03 21 177 13260 -58.7 -61.0 75 2.3 -58.7 61 18 351.9 351.9 297.1 352.1 0.06 22 138 14777 -71.5 -75.5 55 4.0 -71.5 71 21 355.3 355.3 297.8 355.3 0.01 23 96 16847 -85.5 -91.5 33 6.0 -85.5 85 25 366.8 366.8 300.0 366.8 0.00 24 81 17803 -76.3 -79.5 60 3.2 -76.3 163 19 403.9 403.9 305.7 404.0 0.01 25 70 18650 -73.9 -78.9 46 5.0 -73.9 230 14 426.3 426.3 308.4 426.3 0.01 26 62 19358 -73.3 -81.3 28 8.0 -73.3 252 18 442.7 442.7 310.1 442.7 0.01 27 59 19650 -69.7 -78.7 26 9.0 -69.8 260 20 457.1 457.1 311.5 457.2 0.01 28 50 20640 -67.5 -86.5 5 19.0 -67.7 290 26 484.4 484.4 313.8 484.4 0.00 29 44 21416 -65.5 -93.5 1 28.0 -65.8 291 26 507.3 507.3 315.5 507.4 0.00 30 37 22464 -68.5 -95.5 1 27.0 -68.8 293 26 525.4 525.4 316.6 525.4 0.00 31 30 23750 -59.9 -89.9 1 30.0 -60.8 295 26 581.3 581.3 319.8 581.4 0.00 TRP 96 16847 -85.5 -91.5 33 6.0 -85.5 85 25 366.8 366.8 300.0 366.8 0.00 WND Sounding variables and indices Freezing level: 556.20 mb = 5037.38 m = 16526.63 ft Wetbulb zero: 633.20 mb = 3987.53 m = 13082.29 ft Precipitable water: 0.89 inches Sfc-500 mean rel hum: 52.79 % Est. max temperature: 24.92 C = 76.86 F Sfc-Lift cond lev (LCL): 802.42 mb = 2022.34 m = 6634.88 ft T: 14.82 C 700-500 lapse rate: 5.44 C/km ThetaE index: 11.57 C Layer 795.0- 664.0 mb Conv cond level (CCL): 761.45 mb = 2461.84 m = 8076.81 ft Mean mixing ratio: 11.18 g/kg Conv temperature: 17.88 C = 64.18 F Cap Strength: 2.48 C Lifted Index: 1.78 C Risk: Showers probable Lifted Index @300 mb: 3.61 C Lifted Index @700 mb: 2.28 C Parcel Indices Parcel: using 100 mb layer CAPE (B+): 21.29 J/kg Max Up Vert Vel: 6.53 m/s Conv Inhibition (B-): 0.00 J/kg Cap Strength: 2.31 C Lift Cond Lev (LCL): 758.39 mb = 2495.58 m = 8187.50 ft Lev Free Conv (LFC): 753.39 mb = 2550.73 m = 8368.44 ft Equ Level (EL): 743.39 mb = 2661.98 m = 8733.41 ft B at Equ Level: 19.50 J/kg Max Parcel Lev (MPL): 703.39 mb = 3122.23 m = 10243.41 ft Wind level data Storm motion: 115 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 ---------------------------------------------------------- 0 824 1798 0 0 -0.0 -0.0 | 295 9 8.5 -4.0 1 96 16847 85 25 -24.9 -2.2 | 69 18 -16.4 -6.1 2 70 18650 230 14 10.7 9.0 | 255 20 19.2 5.0 3 50 20640 290 26 24.4 -8.9 | 291 35 32.9 -12.9 4 30 23750 295 26 23.6 -11.0 | 295 35 32.1 -15.0 Wind Parameters Mean winds (0-6000m): 85.0 at 12.5 knts Storm direction: 115.0 at 9.4 knts Storm rel Dir Shear (0-3000m): 110.0 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.20250415.23.gif