UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025061823.upa.cvt Date: 2300Z 18 JUN 25 Searching for HKNC... Searching the city database file for: HKNC ... Date:2300Z 18 JUN 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 825 1798 25.0 13.0 47 12.0 16.8 0 0 315.0 317.2 296.8 350.8 11.49 1 665 3616 6.8 2.8 76 4.0 4.5 352 4 314.6 315.9 293.5 336.7 7.06 2 659 3690 7.0 1.0 66 6.0 3.7 352 4 315.6 316.8 293.2 335.4 6.26 3 653 3765 7.4 1.4 66 6.0 4.0 351 4 316.9 318.2 293.7 337.5 6.50 4 618 4213 4.4 -1.6 65 6.0 1.3 349 5 318.5 319.6 293.4 336.2 5.51 5 575 4793 -0.3 -1.7 90 1.4 -1.0 347 6 319.6 320.8 294.0 338.6 5.88 6 524 5525 -5.7 -6.0 98 0.3 -5.8 343 8 321.7 322.7 293.6 337.0 4.67 7 506 5798 -6.3 -6.4 99 0.1 -6.4 342 9 324.3 325.2 294.3 339.7 4.69 8 471 6351 -11.7 -24.7 33 13.0 -15.3 340 10 324.3 324.5 291.2 328.1 1.10 9 461 6515 -10.1 -31.1 16 21.0 -15.2 339 10 328.3 328.4 291.9 330.5 0.62 10 456 6599 -8.1 -29.1 17 21.0 -13.7 338 11 331.8 331.9 292.9 334.6 0.76 11 451 6685 -8.5 -33.5 11 25.0 -14.5 338 11 332.3 332.4 292.9 334.2 0.50 12 400 7601 -15.3 -39.3 11 24.0 -19.7 334 13 335.1 335.2 293.4 336.3 0.32 13 300 9705 -30.5 -53.5 9 23.0 -32.4 323 18 342.4 342.4 295.0 342.8 0.09 14 269 10467 -37.5 -53.5 17 16.0 -38.6 319 20 343.1 343.1 295.1 343.5 0.10 15 256 10806 -40.9 -52.9 26 12.0 -41.6 317 21 342.9 342.9 295.1 343.4 0.11 16 189 12791 -58.1 -59.4 85 1.3 -58.1 306 26 346.3 346.3 295.8 346.6 0.07 17 166 13597 -63.3 -66.9 61 3.6 -63.3 302 29 350.7 350.7 296.8 350.8 0.03 18 162 13747 -62.5 -66.4 59 3.9 -62.6 301 29 354.5 354.5 297.6 354.7 0.03 19 155 14020 -60.9 -69.9 30 9.0 -61.0 299 30 361.8 361.8 299.1 361.8 0.02 20 150 14223 -62.3 -77.3 12 15.0 -62.4 298 30 362.8 362.8 299.2 362.8 0.01 21 119 15610 -74.5 -85.5 17 11.0 -74.5 289 35 365.2 365.2 299.7 365.2 0.00 22 104 16387 -77.9 -86.9 22 9.0 -77.9 284 37 373.0 373.0 301.1 373.0 0.00 23 84 17638 -68.1 -77.1 26 9.0 -68.2 277 41 416.4 416.4 307.3 416.5 0.01 24 73 18473 -71.5 -90.5 4 19.0 -71.6 272 43 426.3 426.3 308.4 426.3 0.00 25 70 18720 -73.3 -93.3 3 20.0 -73.4 270 44 427.6 427.6 308.6 427.6 0.00 26 50 20710 -67.3 -94.3 1 27.0 -67.5 290 17 484.9 484.9 313.8 484.9 0.00 TRP WND Sounding variables and indices Freezing level: 577.74 mb = 4755.72 m = 15602.56 ft Wetbulb zero: 594.47 mb = 4525.14 m = 14846.09 ft Precipitable water: 1.01 inches Sfc-500 mean rel hum: 73.78 % Est. max temperature: 24.67 C = 76.41 F Sfc-Lift cond lev (LCL): 691.66 mb = 3284.36 m = 10775.33 ft T: 10.12 C 700-500 lapse rate: 6.77 C/km Conv cond level (CCL): 665.00 mb = 3615.85 m = 11862.88 ft Mean mixing ratio: 10.23 g/kg Conv temperature: 25.94 C = 78.69 F Cap Strength: 0.47 C Lifted Index: -3.06 C Risk: Severe thunderstorms possible Lifted Index @300 mb: -0.29 C Lifted Index @700 mb: -0.03 C Parcel Indices Parcel: using 100 mb layer CAPE (B+): 391.13 J/kg Max Up Vert Vel: 27.97 m/s Conv Inhibition (B-): 0.86 J/kg Cap Strength: 0.27 C Lift Cond Lev (LCL): 675.73 mb = 3480.94 m = 11420.27 ft Lev Free Conv (LFC): 670.73 mb = 3543.56 m = 11625.73 ft Equ Level (EL): 650.73 mb = 3793.16 m = 12444.59 ft B at Equ Level: 4.31 J/kg Max Parcel Lev (MPL): 140.73 mb = 14605.57 m = 47917.95 ft Wind level data Storm motion: 300 at 16 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 ---------------------------------------------------------- 0 825 1798 0 0 -0.0 -0.0 | 120 16 -14.3 8.2 1 70 18720 270 44 44.0 -0.0 | 254 31 29.7 8.2 2 50 20710 290 17 16.0 -5.8 | 215 3 1.7 2.4 Wind Parameters Mean winds (0-6000m): 270.0 at 22.0 knts Storm direction: 300.0 at 16.5 knts Storm rel Dir Shear (0-3000m): -75.0 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.20250618.23.gif