UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025042800.upa.cvt Date: 0000Z 28 APR 25 Searching for U4688... Searching the city database file for: U4688 ... Date:0000Z 28 APR 25 Station: U4688 WMO ident: 24688 Latitude: 63.27 Longitude: 143.15 ------------------------------------------------------------------------------- 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 ------------------------------------------------------------------------------- 0 1000 55 1 925 688 40 1 SFC 919 740 1.4 -7.6 51 9.0 -1.9 40 1 281.3 281.7 275.6 288.0 2.34 3 888 1016 -1.9 -11.9 46 10.0 -5.0 349 14 280.6 280.9 274.3 285.6 1.73 4 850 1361 -6.5 -13.5 58 7.0 -8.5 285 31 279.3 279.6 273.4 283.9 1.58 5 835 1500 -7.5 -21.5 32 14.0 -10.6 279.7 279.8 272.4 282.2 0.82 TRP WND Sounding variables and indices Freezing level: 905.85 mb = 857.17 m = 2812.20 ft Wetbulb zero: Below ground Precipitable water: 0.06 inches Sfc-500 mean rel hum: 49.39 % Est. max temperature: -273.15 C = -459.67 F Sfc-Lift cond lev (LCL): 798.51 mb = -9999.00 m = -9999.00 ft T: -9999.00 C ThetaE index: 5.80 C Layer 888.0- -0.0 mb Conv cond level (CCL): None Cap Strength: 43.98 C Parcel Indices Parcel: using 100 mb layer CAPE (B+): 110745.02 J/kg Max Up Vert Vel: 470.63 m/s Conv Inhibition (B-): 0.00 J/kg Cap Strength: 46.94 C Lift Cond Lev (LCL): 1587.53 mb = -9999.00 m = -9999.00 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 317 at 12 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 ---------------------------------------------------------- 0 919 740 40 1 -0.6 -0.8 | 132 12 -8.9 8.0 1 850 1361 285 31 29.9 -8.0 | 268 22 21.7 0.7 Wind Parameters Mean winds (0-6000m): 286.7 at 16.0 knts Storm direction: 316.7 at 12.0 knts Shear (0-3000m) pos: 0.0 neg: 26.0 tot: 26.0 10-3/s Storm rel Dir Shear (0-3000m): 136.2 deg Storm rel helicity (0-3000m) pos: 0.0 neg: -105.0 tot: -105.0 m^2/s^2 ave: -175.0 10^-3 m/s^2 rel: -0.90 Storm rel vorticity (0-3000m) horiz: 37.8 stream: -33.8 10^-3/s Energy-Hel index: 0.00 Bulk Rich Number: 79435.49 Bulk Shear: 1.39 m/s 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 ------------------------------------------------------------------------------- 500 282 13 216 7| 0.0 26.0 26.0| 0.0 -73.1 -73.1 -146.1 -0.94| 34.8-32.6 1000 NO DATA | 0.0 26.0 26.0| | 1500 NO DATA | 0.0 26.0 26.0| | 2000 NO DATA | 0.0 26.0 26.0| | 2500 NO DATA | 0.0 26.0 26.0| | 3000 NO DATA | 0.0 26.0 26.0| | 4000 NO DATA | 0.0 26.0 26.0| | 5000 NO DATA | 0.0 26.0 26.0| | 6000 NO DATA | 0.0 26.0 26.0| | Wrote GIF file: /home/apache/climate/data/raob//U4688/skewt/U4688.skewt.20250428.00.gif