UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025120412.upa.cvt Date: 1200Z 4 DEC 25 Searching for U4688... Searching the city database file for: U4688 ... Date:1200Z 4 DEC 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 86 1 925 736 SFC 912 820 -31.5 -34.4 75 2.9 -31.7 70 1 248.1 248.1 247.5 248.7 0.23 3 900 899 -32.5 -36.1 70 3.6 -32.7 248.0 248.0 247.3 248.6 0.19 4 879 1040 -30.7 -34.3 71 3.6 -30.9 251.6 251.6 250.6 252.2 0.24 5 850 1244 -26.3 -29.8 72 3.5 -26.6 295 5 258.6 258.7 256.8 259.7 0.38 6 798 1708 -18.1 -21.5 75 3.4 -18.7 272.1 272.2 267.7 274.5 0.86 7 721 2461 -22.5 -25.5 76 3.0 -22.9 275.2 275.3 269.4 277.2 0.67 8 700 2678 -22.3 -25.3 77 3.0 -22.8 65 9 277.8 277.9 271.1 279.9 0.70 9 627 3483 -25.5 -28.7 75 3.2 -25.9 283.0 283.1 273.9 284.8 0.57 10 608 3705 -29.5 -32.8 73 3.3 -29.8 280.9 281.0 272.4 282.2 0.40 11 557 4328 -32.1 -35.1 75 3.0 -32.4 285.0 285.0 274.6 286.1 0.35 12 506 4998 -38.3 -41.5 72 3.2 -38.5 285.4 285.4 274.6 286.0 0.20 13 500 5080 -38.9 -42.2 71 3.3 -39.1 35 13 285.6 285.6 274.7 286.2 0.19 14 473 5459 -40.9 -44.1 71 3.2 -41.1 287.7 287.7 275.7 288.2 0.16 15 453 5750 -45.3 -48.6 69 3.3 -45.4 285.8 285.8 274.6 286.1 0.10 16 400 6580 -45.3 -48.7 69 3.4 -45.4 105 27 296.1 296.1 279.8 296.5 0.11 17 394 6681 -46.9 -50.1 70 3.2 -47.0 295.3 295.3 279.4 295.7 0.10 18 364 7205 -47.5 -51.0 67 3.5 -47.6 301.3 301.3 282.0 301.6 0.10 TRP WND 347 160 77 Sounding variables and indices 1000-500 mb thick: 4994.00 m Freezing level: Surface below freezing Wetbulb zero: Below ground Precipitable water: 0.09 inches Sfc-500 mean rel hum: 74.08 % Est. max temperature: -6.76 C = 19.84 F Sfc-Lift cond lev (LCL): 868.11 mb = 1115.55 m = 3659.89 ft T: -29.07 C 700-500 lapse rate: 6.91 C/km ThetaE index: 0.18 C Layer 900.0- 879.0 mb Conv cond level (CCL): 912.00 mb = 820.03 m = 2690.35 ft Mean mixing ratio: 0.37 g/kg Conv temperature: -29.38 C = -20.89 F Cap Strength: 23.31 C Lifted Index: 23.07 C Risk: None Lifted Index @700 mb: 18.70 C Showalter Index: 21.31 C Risk: None Total Totals Index: 21.70 C Risk: None Vertical Totals Index: 12.60 C Cross Totals Index: 9.10 C K Index: -20.20 Risk: None Sweat Index: 23.00 Risk: None Energy Index: 5.81 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 74.67 J/kg Max Up Vert Vel: 12.22 m/s Conv Inhibition (B-): 5283.69 J/kg Cap Strength: 23.29 C Lift Cond Lev (LCL): 824.31 mb = 1469.78 m = 4822.06 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data ------------------------------------ TRUE/GROUND REL LEV P H DIR SPD U V mb m knt m/s ------------------------------------ 0 347 8551 160 77 -26.3 72.4 1 912 820 70 1 -0.9 -0.3 2 850 1244 295 5 4.5 -2.1 3 700 2678 65 9 -8.2 -3.8 4 500 5080 35 13 -7.5 -10.6 5 400 6580 105 27 -26.1 7.0 Wind Parameters Energy-Hel index: -4.67 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//U4688/skewt/U4688.skewt.20251204.12.gif