UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025042823.upa.cvt Date: 2300Z 28 APR 25 Searching for HKNC... Searching the city database file for: HKNC ... Date:2300Z 28 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 821 1798 18.0 15.8 87 2.2 16.5 120 3 308.0 310.7 296.6 350.0 13.89 1 793 2093 15.4 15.0 97 0.4 15.1 118 3 308.3 310.9 296.5 349.7 13.65 2 716 2948 9.8 9.3 97 0.5 9.5 111 4 311.3 313.3 295.0 343.1 10.33 3 700 3135 9.2 8.6 96 0.6 8.8 110 4 312.7 314.6 295.2 343.8 10.08 4 668 3523 9.4 1.4 57 8.0 4.9 107 4 317.1 318.3 293.6 337.3 6.35 5 663 3585 8.8 -0.2 53 9.0 3.9 106 4 317.1 318.2 293.1 335.3 5.69 6 630 4004 5.4 -0.6 65 6.0 2.2 103 5 317.9 319.0 293.4 336.5 5.82 7 616 4187 4.6 -7.4 41 12.0 -1.0 101 5 319.0 319.7 291.9 330.7 3.56 8 587 4579 3.6 -20.4 15 24.0 -4.9 98 5 322.3 322.5 290.8 326.7 1.29 9 546 5162 0.0 -23.0 16 23.0 -7.5 93 6 324.8 325.0 291.3 328.6 1.10 10 500 5860 -5.3 -9.0 75 3.7 -7.0 88 6 326.6 327.3 294.2 339.6 3.87 11 485 6098 -6.5 -13.5 58 7.0 -9.3 86 7 328.0 328.5 293.7 337.5 2.78 12 473 6294 -7.7 -11.9 72 4.2 -9.5 84 7 328.8 329.5 294.3 339.9 3.25 13 461 6493 -8.1 -24.1 26 16.0 -12.9 82 7 330.8 331.0 293.0 335.0 1.18 14 442 6819 -10.1 -31.1 16 21.0 -15.3 80 7 332.2 332.4 293.0 334.6 0.65 15 428 7067 -11.3 -17.3 61 6.0 -13.5 78 7 333.8 334.2 294.8 341.9 2.30 16 413 7340 -11.9 -26.9 28 15.0 -16.1 75 8 336.4 336.6 294.4 340.2 1.02 17 400 7584 -13.7 -27.7 30 14.0 -17.4 73 8 337.2 337.4 294.5 340.8 0.98 18 374 8091 -17.3 -33.3 23 16.0 -20.8 69 8 339.0 339.1 294.6 341.3 0.62 19 355 8479 -20.7 -27.7 53 7.0 -22.4 66 9 339.5 339.7 295.2 343.6 1.11 20 300 9703 -29.3 -43.3 25 14.0 -31.0 55 10 344.1 344.1 295.6 345.2 0.28 21 290 9944 -31.3 -37.3 55 6.0 -32.2 52 10 344.6 344.7 295.9 346.7 0.53 22 276 10293 -33.7 -50.7 16 17.0 -35.2 49 11 346.0 346.1 295.8 346.6 0.13 23 257 10789 -37.9 -45.9 43 8.0 -38.7 45 11 347.0 347.0 296.2 348.0 0.24 24 250 10979 -39.5 -45.5 53 6.0 -40.0 43 11 347.3 347.4 296.3 348.4 0.26 25 230 11546 -42.9 -56.9 20 14.0 -43.6 37 12 350.5 350.6 296.8 350.9 0.08 26 159 13923 -63.7 -70.7 38 7.0 -63.8 13 14 354.4 354.4 297.6 354.5 0.02 27 110 16090 -81.1 -88.1 30 7.0 -81.1 349 17 361.1 361.1 298.9 361.1 0.00 28 100 16624 -82.9 -89.9 29 7.0 -82.9 343 18 367.6 367.6 300.1 367.6 0.00 29 84 17604 -79.5 -83.7 50 4.2 -79.5 332 19 393.3 393.3 304.3 393.3 0.00 30 70 18650 -75.1 -80.1 45 5.0 -75.2 320 20 423.7 423.7 308.2 423.8 0.01 31 64 19172 -74.1 -81.1 33 7.0 -74.2 305 23 436.9 436.9 309.6 437.0 0.01 32 58 19760 -64.3 -77.3 15 13.0 -64.6 289 26 471.5 471.5 312.8 471.6 0.02 33 50 20660 -68.5 -92.5 2 24.0 -68.7 265 30 482.1 482.1 313.6 482.1 0.00 34 44 21430 -71.5 -97.5 1 26.0 -71.6 270 37 492.7 492.7 314.4 492.7 0.00 35 30 23790 -58.1 -88.1 1 30.0 -59.2 40 3 586.2 586.3 320.0 586.3 0.01 36 28 24226 -59.5 -89.5 1 30.0 -60.5 49 11 594.0 594.0 320.3 594.1 0.00 37 20 26380 -51.5 -83.5 1 32.0 -54.5 90 49 678.5 678.5 323.7 678.7 0.02 TRP 44 21430 -71.5 -97.5 1 26.0 -71.6 270 37 492.7 492.7 314.4 492.7 0.00 WND Sounding variables and indices Freezing level: 546.00 mb = 5162.27 m = 16936.37 ft Wetbulb zero: 620.54 mb = 4127.35 m = 13541.01 ft Precipitable water: 1.01 inches Sfc-500 mean rel hum: 60.52 % Est. max temperature: 26.16 C = 79.09 F Sfc-Lift cond lev (LCL): 794.75 mb = 2074.01 m = 6804.43 ft T: 15.57 C 700-500 lapse rate: 5.32 C/km ThetaE index: 6.98 C Layer 793.0- 700.0 mb Conv cond level (CCL): 760.06 mb = 2447.97 m = 8031.31 ft Mean mixing ratio: 12.54 g/kg Conv temperature: 19.46 C = 67.02 F Cap Strength: 1.29 C Lifted Index: -1.45 C Risk: Thunderstorms probable Lifted Index @300 mb: 0.48 C Lifted Index @700 mb: -0.66 C Parcel Indices Parcel: using 100 mb layer CAPE (B+): 92.65 J/kg Max Up Vert Vel: 13.61 m/s Conv Inhibition (B-): 0.06 J/kg Cap Strength: 0.99 C Lift Cond Lev (LCL): 763.05 mb = 2415.15 m = 7923.61 ft Lev Free Conv (LFC): 748.05 mb = 2581.40 m = 8469.06 ft Equ Level (EL): 688.05 mb = 3277.80 m = 10753.82 ft B at Equ Level: 28.18 J/kg Max Parcel Lev (MPL): 248.05 mb = 11032.21 m = 36194.47 ft Wind level data Storm motion: 353 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 ---------------------------------------------------------- 0 821 1798 120 3 -2.6 1.5 | 160 11 -3.6 10.1 1 70 18650 320 20 12.9 -15.3 | 300 14 11.9 -6.8 2 50 20660 265 30 29.9 2.6 | 249 31 28.9 11.2 3 44 21430 270 37 37.0 -0.0 | 257 37 36.0 8.6 4 30 23790 40 3 -1.9 -2.3 | 155 7 -2.9 6.3 5 20 26380 90 49 -49.0 0.0 | 100 51 -50.0 8.6 Wind Parameters Mean winds (0-6000m): 323.4 at 11.5 knts Storm direction: 353.4 at 8.6 knts Storm rel Dir Shear (0-3000m): -115.4 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.20250428.23.gif