UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025050423.upa.cvt Date: 2300Z 4 MAY 25 Searching for HKNC... Searching the city database file for: HKNC ... Date:2300Z 4 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 823 1798 17.6 15.9 90 1.7 16.4 170 3 307.4 310.0 296.5 349.5 13.94 1 794 2102 15.4 15.2 99 0.2 15.3 171 3 308.2 310.8 296.6 350.0 13.82 2 677 3429 7.2 7.0 99 0.2 7.1 177 5 313.4 315.2 294.9 342.4 9.33 3 664 3587 6.8 6.0 95 0.8 6.3 178 5 314.7 316.4 294.9 342.4 8.87 4 617 4186 4.2 -3.8 56 8.0 0.1 181 5 318.4 319.3 292.7 333.5 4.68 5 542 5225 -2.5 -7.2 70 4.7 -4.7 185 6 322.5 323.3 293.3 336.0 4.11 6 514 5644 -3.9 -16.9 36 13.0 -8.7 187 7 325.7 326.1 292.4 332.5 1.98 7 490 6019 -6.5 -16.5 45 10.0 -10.2 189 7 327.0 327.4 292.9 334.4 2.15 8 478 6212 -6.9 -23.9 24 17.0 -12.1 190 7 328.8 329.1 292.5 333.0 1.16 9 457 6562 -8.3 -23.3 29 15.0 -12.9 191 8 331.3 331.6 293.3 335.9 1.28 10 440 6854 -10.9 -16.9 61 6.0 -13.1 193 8 331.7 332.1 294.3 339.7 2.31 11 424 7138 -12.3 -25.3 33 13.0 -16.0 194 8 333.4 333.6 293.7 337.6 1.15 12 412 7356 -13.7 -18.3 68 4.6 -15.3 195 8 334.3 334.8 294.8 342.1 2.20 13 400 7580 -14.5 -31.5 22 17.0 -18.5 196 9 336.1 336.3 294.0 338.7 0.69 14 377 8026 -17.5 -38.5 14 21.0 -21.4 199 9 337.9 338.0 294.1 339.3 0.36 15 336 8878 -23.3 -34.3 36 11.0 -25.4 203 10 341.3 341.4 295.2 343.7 0.62 16 307 9531 -28.3 -37.3 42 9.0 -29.7 206 11 343.2 343.3 295.6 345.2 0.51 17 295 9816 -30.5 -33.1 78 2.6 -31.0 207 11 344.0 344.2 296.0 347.1 0.80 18 267 10516 -36.3 -36.3 100 0.0 -36.3 211 12 345.5 345.7 296.2 348.0 0.64 19 257 10779 -38.5 -40.2 84 1.7 -38.7 213 12 346.1 346.2 296.1 347.9 0.45 20 179 13156 -58.9 -63.9 52 5.0 -59.0 226 15 350.4 350.4 296.8 350.6 0.04 21 164 13699 -63.7 -66.8 66 3.1 -63.7 229 15 351.3 351.3 297.0 351.4 0.03 22 111 15984 -82.7 -88.7 35 6.0 -82.7 243 18 357.1 357.1 298.1 357.1 0.00 23 95 16879 -71.1 -72.4 83 1.3 -71.1 249 20 396.1 396.1 304.7 396.2 0.02 24 82 17742 -74.5 -81.5 33 7.0 -74.5 254 21 406.2 406.2 306.0 406.2 0.01 25 70 18660 -75.7 -82.7 32 7.0 -75.7 260 22 422.4 422.4 308.0 422.5 0.01 TRP WND Sounding variables and indices Freezing level: 569.99 mb = 4837.40 m = 15870.53 ft Wetbulb zero: 614.86 mb = 4213.83 m = 13824.74 ft Precipitable water: 1.15 inches Sfc-500 mean rel hum: 77.33 % Est. max temperature: 23.68 C = 74.62 F Sfc-Lift cond lev (LCL): 802.71 mb = 2009.51 m = 6592.80 ft T: 16.07 C 700-500 lapse rate: 5.28 C/km Conv cond level (CCL): 765.44 mb = 2406.84 m = 7896.37 ft Mean mixing ratio: 12.82 g/kg Conv temperature: 19.52 C = 67.13 F Cap Strength: 0.10 C Lifted Index: -1.79 C Risk: Thunderstorms probable Lifted Index @300 mb: -0.24 C Lifted Index @700 mb: -1.18 C Parcel Indices Parcel: using 100 mb layer CAPE (B+): 301.09 J/kg Max Up Vert Vel: 24.54 m/s Conv Inhibition (B-): 0.03 J/kg Cap Strength: 0.10 C Lift Cond Lev (LCL): 767.81 mb = 2381.12 m = 7811.98 ft Lev Free Conv (LFC): 752.81 mb = 2545.31 m = 8350.64 ft Equ Level (EL): 252.81 mb = 10887.48 m = 35719.65 ft B at Equ Level: 300.54 J/kg Max Parcel Lev (MPL): 132.81 mb = 14934.28 m = 48996.40 ft Wind level data Storm motion: 282 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 ---------------------------------------------------------- 0 823 1798 170 3 -0.5 3.0 | 117 11 -9.7 4.9 1 70 18660 260 22 21.7 3.8 | 245 14 12.5 5.8 Wind Parameters Mean winds (0-6000m): 252.2 at 12.5 knts Storm direction: 282.2 at 9.4 knts Storm rel Dir Shear (0-3000m): -72.0 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.20250504.23.gif