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 U8661... Searching the city database file for: U8661 ... Date:1200Z 4 DEC 25 Station: U8661 WMO ident: 28661 Latitude: 55.47 Longitude: 65.40 ------------------------------------------------------------------------------- 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 1009 73 1.4 -2.7 74 4.1 -0.2 250 5 273.8 274.4 272.5 282.3 3.10 1 1000 145 0.2 -4.7 70 4.9 -1.6 260 15 273.4 273.8 271.6 280.7 2.69 2 925 764 -4.7 -7.1 83 2.4 -5.5 290 27 274.5 274.9 271.9 281.2 2.42 3 897 1005 -5.9 -8.0 85 2.1 -6.6 295 28 275.7 276.1 272.4 282.2 2.33 4 850 1428 -5.1 -6.5 90 1.4 -5.6 305 31 280.8 281.3 275.9 288.6 2.76 5 778 2122 -5.7 -7.7 86 2.0 -6.4 303 33 287.4 287.8 279.3 295.4 2.75 6 730 2619 -7.3 -9.0 88 1.7 -7.9 301 34 290.9 291.4 280.8 298.7 2.65 7 708 2857 -8.7 -11.0 83 2.3 -9.5 300 35 291.9 292.3 280.8 298.9 2.33 8 700 2945 -9.5 -11.7 84 2.2 -10.2 300 35 292.0 292.4 280.7 298.6 2.23 9 666 3328 -11.5 -13.2 87 1.7 -12.0 301 39 293.9 294.3 281.4 300.2 2.07 10 646 3561 -11.9 -14.8 79 2.9 -12.8 301 41 296.0 296.4 282.1 301.8 1.88 11 600 4121 -16.3 -18.5 83 2.2 -16.9 302 47 297.3 297.5 282.1 301.9 1.48 12 591 4235 -16.7 -19.4 80 2.7 -17.4 303 49 298.1 298.3 282.4 302.5 1.39 13 573 4466 -17.7 -22.7 65 5.0 -18.8 303 51 299.6 299.7 282.6 303.0 1.08 14 500 5470 -25.5 -29.8 67 4.3 -26.2 305 62 301.9 302.1 283.0 304.1 0.65 15 479 5781 -27.7 -30.6 76 2.9 -28.1 314 73 303.0 303.1 283.4 305.0 0.62 16 444 6324 -30.6 -35.9 60 5.2 -31.2 330 93 305.9 306.0 284.3 307.3 0.40 17 419 6735 -32.9 -39.9 50 7.0 -33.6 324 82 308.1 308.2 285.0 309.1 0.28 18 400 7060 -35.7 -43.7 44 8.0 -36.3 320 73 308.6 308.6 285.1 309.3 0.20 19 390 7235 -37.3 -45.3 43 8.0 -37.8 308.7 308.8 285.1 309.4 0.17 20 326 8446 -47.7 -53.7 50 6.0 -47.9 310.6 310.7 285.7 310.9 0.08 TRP WND 444 6324 -30.6 -35.9 60 5.2 -31.2 330 93 305.9 306.0 284.3 307.3 0.40 Sounding variables and indices 1000-500 mb thick: 5325.00 m Freezing level: 996.94 mb = 170.27 m = 558.61 ft Wetbulb zero: Below ground Precipitable water: 0.46 inches Sfc-500 mean rel hum: 79.76 % Est. max temperature: 7.36 C = 45.25 F Sfc-Lift cond lev (LCL): 946.61 mb = 580.61 m = 1904.85 ft T: -3.25 C 700-500 lapse rate: 6.34 C/km ThetaE index: 1.58 C Layer 1000.0- 925.0 mb Conv cond level (CCL): 687.78 mb = 3080.38 m = 10106.10 ft Mean mixing ratio: 2.56 g/kg Conv temperature: 20.25 C = 68.45 F Cap Strength: 16.67 C Lifted Index: 17.55 C Risk: None Lifted Index @700 mb: 12.34 C Showalter Index: 11.75 C Risk: None Total Totals Index: 39.40 C Risk: None Vertical Totals Index: 20.40 C Cross Totals Index: 19.00 C K Index: 11.70 Risk: None Sweat Index: 124.00 Risk: None Energy Index: 3.27 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 4.06 J/kg Max Up Vert Vel: 2.85 m/s Conv Inhibition (B-): 4607.93 J/kg Cap Strength: 17.47 C Lift Cond Lev (LCL): 906.56 mb = 922.22 m = 3025.61 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 334 at 31 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 1009 73 250 5 4.7 1.7 | 163 31 -9.3 29.9 1 1000 145 260 15 14.8 2.6 | 181 31 0.8 30.8 2 925 764 290 27 25.4 -9.2 | 211 22 11.4 18.9 3 850 1428 305 31 25.4 -17.8 | 228 15 11.4 10.4 4 700 2945 300 35 30.3 -17.5 | 237 19 16.3 10.7 5 500 5470 305 62 50.8 -35.6 | 281 38 36.8 -7.4 6 444 6324 330 93 46.5 -80.5 | 328 62 32.5 -52.4 7 400 7060 320 73 46.9 -55.9 | 310 43 32.9 -27.7 Wind Parameters Mean winds (0-6000m): 303.6 at 42.0 knts Storm direction: 333.6 at 31.5 knts Shear (0-3000m) pos: 4.9 neg: 1.0 tot: 5.9 10-3/s Storm rel Dir Shear (0-3000m): 77.8 deg Storm rel helicity (0-3000m) pos: 224.7 neg: 0.0 tot: 224.7 m^2/s^2 ave: 74.9 10^-3 m/s^2 rel: 0.81 Storm rel vorticity (0-3000m) horiz: 7.1 stream: 5.7 10^-3/s Energy-Hel index: 0.01 Bulk Rich Number: 0.04 Bulk Shear: 107.36 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 ------------------------------------------------------------------------------- 500 271 18 188 28| 19.7 0.0 19.7|151.3 0.0 151.3 302.7 0.93| 21.5 20.1 1000 284 22 199 24| 13.2 0.0 13.2|192.1 0.0 192.1 192.1 0.87| 15.6 13.5 1500 292 25 206 21| 9.9 0.0 9.9|206.8 0.0 206.8 137.9 0.84| 12.1 10.1 2000 295 27 211 20| 7.4 0.4 7.8|211.1 0.0 211.1 105.6 0.83| 9.5 7.9 2500 297 28 215 19| 5.9 0.7 6.6|215.2 0.0 215.2 86.1 0.82| 7.9 6.5 3000 298 29 219 19| 4.9 1.0 5.9|224.7 0.0 224.7 74.9 0.81| 7.1 5.7 4000 299 32 228 19| 5.1 0.7 5.8|278.2 0.0 278.2 69.5 0.81| 6.7 5.4 5000 300 36 241 20| 5.2 0.6 5.8|335.4 0.0 335.4 67.1 0.79| 6.5 5.1 6000 304 42 257 22| 6.8 0.5 7.3|681.4 0.0 681.4 113.6 0.80| 8.4 6.8 Wrote GIF file: /home/apache/climate/data/raob//U8661/skewt/U8661.skewt.20251204.12.gif