UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025042423.upa.cvt Date: 2300Z 24 APR 25 Searching for HKNC... Searching the city database file for: HKNC ... Date:2300Z 24 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 823 1798 16.6 15.3 92 1.3 15.7 70 5 306.4 308.9 295.9 346.6 13.41 1 794 2102 14.4 14.1 98 0.3 14.2 72 5 307.2 309.6 295.7 345.9 12.85 2 707 3074 9.2 9.2 100 0.0 9.2 79 6 311.8 313.8 295.2 343.8 10.40 3 700 3157 7.4 7.3 99 0.1 7.3 80 6 310.7 312.4 294.1 339.0 9.21 4 663 3602 4.8 4.8 100 0.0 4.8 83 7 312.6 314.2 293.8 337.9 8.17 5 638 3915 2.4 2.4 100 0.0 2.4 86 7 313.3 314.7 293.2 335.7 7.15 6 616 4197 -0.3 -5.3 69 5.0 -2.6 88 7 313.4 314.2 290.7 326.7 4.18 7 465 6406 -11.1 -11.6 96 0.5 -11.3 105 10 326.2 326.9 293.7 337.6 3.39 8 443 6779 -10.9 -11.4 96 0.5 -11.1 108 10 331.0 331.7 295.1 343.4 3.61 9 380 7943 -18.3 -35.3 21 17.0 -21.7 118 11 336.1 336.2 293.8 338.0 0.50 10 365 8244 -18.7 -25.7 54 7.0 -20.6 120 12 339.5 339.7 295.3 344.2 1.29 11 349 8577 -20.9 -35.9 25 15.0 -23.8 123 12 340.9 341.0 295.0 342.8 0.51 12 322 9169 -23.9 -43.9 14 20.0 -26.8 128 13 344.7 344.7 295.7 345.6 0.24 13 300 9683 -27.9 -51.9 8 24.0 -30.3 132 13 346.1 346.1 295.8 346.5 0.11 14 256 10801 -37.9 -52.9 19 15.0 -38.9 142 15 347.4 347.4 296.1 347.8 0.11 15 250 10964 -39.5 -53.5 21 14.0 -40.4 144 15 347.3 347.4 296.1 347.8 0.10 16 215 11980 -47.3 -56.3 35 9.0 -47.7 153 16 350.5 350.6 296.8 350.9 0.09 17 190 12790 -52.3 -66.3 17 14.0 -52.7 161 17 355.1 355.1 297.7 355.2 0.03 18 184 12996 -54.1 -68.1 16 14.0 -54.4 163 17 355.5 355.5 297.8 355.6 0.02 19 120 15602 -76.3 -84.3 27 8.0 -76.3 189 21 361.0 361.0 298.9 361.0 0.00 20 99 16690 -84.1 -92.1 23 8.0 -84.1 201 22 366.3 366.3 299.9 366.3 0.00 21 93 17036 -84.9 -92.9 23 8.0 -84.9 205 23 371.3 371.3 300.8 371.3 0.00 22 77 18090 -80.5 -85.2 45 4.7 -80.5 225 30 401.1 401.1 305.3 401.1 0.00 23 70 18640 -71.9 -76.0 54 4.1 -71.9 235 33 430.6 430.6 308.9 430.7 0.02 24 63 19255 -74.5 -83.5 24 9.0 -74.6 238 29 438.0 438.0 309.7 438.0 0.01 25 50 20620 -67.5 -81.5 12 14.0 -67.7 245 21 484.4 484.4 313.8 484.5 0.01 26 47 20993 -66.7 -84.7 6 18.0 -67.0 243 21 495.0 495.0 314.6 495.0 0.01 27 42 21671 -67.1 -94.1 1 27.0 -67.4 238 21 510.2 510.2 315.7 510.2 0.00 28 39 22125 -60.3 -89.3 1 29.0 -61.0 235 21 538.3 538.3 317.4 538.3 0.00 29 30 23760 -60.1 -89.1 1 29.0 -61.0 225 21 580.8 580.8 319.7 580.8 0.00 TRP 93 17036 -84.9 -92.9 23 8.0 -84.9 205 23 371.3 371.3 300.8 371.3 0.00 WND Sounding variables and indices Freezing level: 618.44 mb = 4165.85 m = 13667.32 ft Wetbulb zero: 627.43 mb = 4049.23 m = 13284.70 ft Precipitable water: 1.16 inches Sfc-500 mean rel hum: 89.22 % Est. max temperature: 22.02 C = 71.64 F Sfc-Lift cond lev (LCL): 807.43 mb = 1960.04 m = 6430.49 ft T: 15.43 C 700-500 lapse rate: 5.86 C/km ThetaE index: 19.92 C Layer 794.0- 465.0 mb Conv cond level (CCL): 765.62 mb = 2407.15 m = 7897.37 ft Mean mixing ratio: 12.20 g/kg Conv temperature: 18.74 C = 65.73 F Cap Strength: 0.08 C Lifted Index: -3.65 C Risk: Severe thunderstorms possible Lifted Index @300 mb: 3.08 C Lifted Index @700 mb: -1.88 C Parcel Indices Parcel: using 100 mb layer CAPE (B+): 506.55 J/kg Max Up Vert Vel: 31.83 m/s Conv Inhibition (B-): 0.15 J/kg Cap Strength: 0.08 C Lift Cond Lev (LCL): 768.05 mb = 2380.59 m = 7810.24 ft Lev Free Conv (LFC): 753.05 mb = 2545.76 m = 8352.13 ft Equ Level (EL): 373.05 mb = 8080.70 m = 26511.15 ft B at Equ Level: 503.75 J/kg Max Parcel Lev (MPL): 203.05 mb = 12354.30 m = 40532.00 ft Wind level data Storm motion: 225 at 10 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 70 5 -4.7 -1.7 | 53 15 -12.1 -9.2 1 93 17036 205 23 9.7 20.8 | 190 14 2.3 13.4 2 70 18640 235 33 27.0 18.9 | 240 23 19.6 11.5 3 50 20620 245 21 19.0 8.9 | 263 12 11.6 1.4 4 30 23760 225 21 14.8 14.8 | 225 11 7.5 7.4 Wind Parameters Mean winds (0-6000m): 194.7 at 14.0 knts Storm direction: 224.7 at 10.5 knts Storm rel Dir Shear (0-3000m): -7.8 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.20250424.23.gif