UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025042000.upa.cvt Date: 0000Z 20 APR 25 Searching for HKNC... Searching the city database file for: HKNC ... Date:0000Z 20 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 822 1798 16.6 14.8 89 1.8 15.4 0 0 306.5 308.9 295.6 345.5 12.99 1 793 2103 15.8 11.5 76 4.3 13.0 359 0 308.8 310.8 294.7 341.6 10.81 2 745 2628 12.0 11.2 95 0.8 11.5 356 1 310.2 312.3 295.4 344.7 11.29 3 663 3594 7.0 5.2 88 1.8 5.9 351 3 315.1 316.7 294.7 341.4 8.40 4 629 4024 5.0 1.8 80 3.2 3.2 349 3 317.6 318.9 294.2 339.6 6.95 5 616 4194 3.6 1.9 89 1.7 2.7 348 4 317.9 319.3 294.4 340.6 7.15 6 588 4569 0.8 -0.3 92 1.1 0.2 346 4 318.9 320.1 294.1 339.3 6.38 7 556 5018 -0.3 -7.3 59 7.0 -3.6 344 5 322.7 323.5 293.3 335.8 3.98 8 527 5444 -3.1 -4.3 91 1.2 -3.7 342 5 324.3 325.4 294.7 341.7 5.29 9 486 6079 -7.5 -7.8 98 0.3 -7.7 339 6 326.5 327.4 294.6 341.1 4.38 10 474 6274 -7.9 -12.3 71 4.4 -9.7 338 7 328.4 329.0 294.1 339.1 3.14 11 458 6540 -9.1 -11.9 80 2.8 -10.3 336 7 330.1 330.8 294.7 341.6 3.36 12 446 6745 -9.5 -21.5 37 12.0 -13.4 335 7 332.1 332.4 293.7 337.6 1.54 13 422 7170 -12.7 -28.7 25 16.0 -16.8 333 8 333.3 333.5 293.4 336.5 0.85 14 414 7315 -14.1 -18.3 70 4.2 -15.6 332 8 333.4 333.8 294.6 341.1 2.18 15 400 7576 -15.3 -16.1 94 0.8 -15.6 331 9 335.1 335.7 295.4 344.6 2.72 16 388 7805 -16.7 -35.7 18 19.0 -20.5 330 9 336.2 336.3 293.8 338.0 0.47 17 370 8161 -18.1 -25.1 54 7.0 -20.0 328 10 338.9 339.2 295.3 343.9 1.35 18 346 8659 -22.1 -38.1 22 16.0 -24.8 325 11 340.1 340.2 294.7 341.7 0.41 19 311 9433 -28.3 -29.1 93 0.8 -28.5 321 12 342.0 342.2 295.8 346.1 1.11 20 288 9980 -32.3 -34.0 85 1.7 -32.6 317 13 343.8 344.0 295.9 346.7 0.75 21 276 10279 -34.3 -43.3 40 9.0 -35.3 316 13 345.2 345.2 295.8 346.4 0.30 22 257 10774 -38.5 -42.9 63 4.4 -38.9 313 14 346.1 346.2 296.1 347.4 0.34 23 250 10963 -40.1 -43.8 68 3.7 -40.4 312 14 346.4 346.5 296.1 347.7 0.31 24 223 11733 -45.9 -55.9 31 10.0 -46.4 307 16 349.1 349.1 296.5 349.4 0.09 25 188 12845 -55.9 -59.7 62 3.8 -56.0 300 18 350.4 350.4 296.8 350.7 0.07 26 170 13479 -60.1 -68.1 34 8.0 -60.2 296 19 353.6 353.7 297.4 353.8 0.02 27 132 15007 -73.9 -78.8 47 4.9 -73.9 286 22 355.6 355.6 297.8 355.6 0.01 28 103 16427 -81.7 -87.7 35 6.0 -81.7 276 25 366.8 366.8 300.0 366.8 0.00 29 92 17075 -72.5 -75.3 66 2.8 -72.5 271 27 397.0 397.0 304.8 397.1 0.02 30 79 17965 -75.1 -82.1 33 7.0 -75.2 265 29 409.3 409.3 306.4 409.3 0.01 31 70 18660 -78.9 -86.9 26 8.0 -78.9 260 30 415.6 415.6 307.2 415.6 0.00 32 66 18994 -79.9 -87.9 25 8.0 -79.9 420.5 420.5 307.7 420.5 0.00 TRP WND Sounding variables and indices Freezing level: 564.73 mb = 4895.28 m = 16060.44 ft Wetbulb zero: 586.36 mb = 4591.68 m = 15064.38 ft Precipitable water: 1.21 inches Sfc-500 mean rel hum: 85.55 % Est. max temperature: 24.23 C = 75.61 F Sfc-Lift cond lev (LCL): 800.47 mb = 2023.00 m = 6637.06 ft T: 16.01 C 700-500 lapse rate: 5.64 C/km ThetaE index: 3.88 C Layer 793.0- 745.0 mb Conv cond level (CCL): 722.26 mb = 2884.52 m = 9463.55 ft Mean mixing ratio: 11.24 g/kg Conv temperature: 21.37 C = 70.47 F Cap Strength: 0.84 C Lifted Index: -0.59 C Risk: Thunderstorms probable Lifted Index @300 mb: 1.86 C Lifted Index @700 mb: 0.58 C Parcel Indices Parcel: using 100 mb layer CAPE (B+): 41.20 J/kg Max Up Vert Vel: 9.08 m/s Conv Inhibition (B-): 31.76 J/kg Cap Strength: 0.84 C Lift Cond Lev (LCL): 744.74 mb = 2630.62 m = 8630.54 ft Lev Free Conv (LFC): 609.74 mb = 4276.32 m = 14029.75 ft Equ Level (EL): 559.74 mb = 4963.80 m = 16285.25 ft B at Equ Level: 26.23 J/kg Max Parcel Lev (MPL): 389.74 mb = 7771.72 m = 25497.46 ft Wind level data Storm motion: 290 at 11 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 ---------------------------------------------------------- 0 822 1798 0 0 -0.0 -0.0 | 110 11 -10.6 3.8 1 70 18660 260 30 29.5 5.2 | 244 21 19.0 9.1 Wind Parameters Mean winds (0-6000m): 260.0 at 15.0 knts Storm direction: 290.0 at 11.2 knts Storm rel Dir Shear (0-3000m): -65.0 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.20250420.00.gif