UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025042712.upa.cvt Date: 1200Z 27 APR 25 Searching for U4688... Searching the city database file for: U4688 ... Date:1200Z 27 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 77 1 925 711 30 5 SFC 922 737 1.6 -4.4 64 6.0 -0.7 30 5 281.2 281.7 276.5 289.7 2.99 3 915 799 2.4 -4.6 60 7.0 -0.4 37 5 282.6 283.2 277.2 291.1 2.96 4 850 1389 -1.9 -9.9 54 8.0 -4.6 105 9 284.2 284.5 276.8 290.3 2.12 5 700 2902 -14.3 -19.3 66 5.0 -15.4 310 23 286.6 286.9 276.7 290.2 1.18 6 644 3526 -19.7 -23.0 75 3.3 -20.3 316 26 287.4 287.6 276.8 290.3 0.93 7 641 3560 -19.9 -23.1 76 3.2 -20.5 317 26 287.6 287.8 276.9 290.5 0.93 8 524 5033 -26.1 -35.1 43 9.0 -27.2 332 34 297.2 297.3 280.7 298.4 0.37 9 506 5285 -28.1 -36.1 46 8.0 -29.0 334 36 297.8 297.8 280.8 298.9 0.35 10 500 5370 -28.7 -36.7 46 8.0 -29.6 335 36 298.0 298.1 281.0 299.2 0.33 11 422 6563 -37.5 -46.5 39 9.0 -38.0 331 35 301.6 301.6 282.2 302.1 0.14 12 400 6930 -40.9 -49.9 37 9.0 -41.3 330 35 301.8 301.9 282.3 302.2 0.10 13 333 8149 -51.7 -59.7 38 8.0 -51.8 330 37 303.3 303.3 282.8 303.4 0.04 14 302 8778 -55.9 -63.9 36 8.0 -56.0 330 38 306.0 306.0 283.8 306.1 0.02 15 300 8820 -55.9 -63.9 36 8.0 -56.0 330 38 306.6 306.6 284.0 306.6 0.02 16 288 9082 -56.3 -64.3 36 8.0 -56.4 327 36 309.6 309.6 285.2 309.7 0.02 17 286 9126 -57.7 -64.7 40 7.0 -57.8 327 36 308.2 308.2 284.7 308.3 0.02 18 277 9329 -58.7 -66.7 35 8.0 -58.8 325 35 309.6 309.6 285.2 309.7 0.02 19 256 9829 -57.9 -65.9 35 8.0 -58.0 333 29 317.8 317.8 288.1 317.9 0.02 20 250 9980 -56.5 -64.5 36 8.0 -56.6 335 27 322.1 322.1 289.4 322.2 0.03 21 225 10652 -52.1 -60.1 38 8.0 -52.3 342 19 338.7 338.7 294.0 338.9 0.05 22 200 11410 -52.3 -61.3 33 9.0 -52.5 350 11 349.9 350.0 296.7 350.2 0.05 23 150 13280 -50.3 -63.3 20 13.0 -50.8 5 7 383.4 383.4 302.8 383.6 0.05 24 124 14525 -49.5 -64.5 16 15.0 -50.2 10 6 406.3 406.3 306.1 406.6 0.05 25 101 15865 -50.7 -67.7 12 17.0 -51.5 15 5 428.5 428.6 308.7 428.8 0.04 26 100 15930 -50.7 -67.7 12 17.0 -51.5 15 5 429.8 429.8 308.9 430.0 0.04 27 77 17629 -50.3 -69.3 9 19.0 -51.4 52 5 464.0 464.0 312.1 464.2 0.04 28 70 18250 -50.3 -70.3 8 20.0 -51.5 65 5 476.8 476.8 313.2 477.0 0.04 29 50 20450 -49.9 -71.9 6 22.0 -51.5 80 9 525.9 525.9 316.7 526.2 0.05 30 46 20995 -49.9 -71.9 6 22.0 -51.7 79 9 538.6 538.6 317.5 538.9 0.05 31 35 22777 -51.3 -73.3 6 22.0 -53.2 77 8 578.7 578.7 319.6 579.1 0.05 32 30 23780 -50.5 -73.5 5 23.0 -52.8 75 7 607.0 607.0 320.9 607.4 0.06 33 28 24228 -50.5 -73.5 5 23.0 -53.0 63 7 619.1 619.1 321.5 619.6 0.07 34 23 25513 -48.1 -72.1 5 24.0 -51.7 29 7 661.9 662.0 323.2 662.8 0.10 35 20 26430 -48.7 -72.7 5 24.0 -52.4 5 7 687.1 687.2 324.0 688.0 0.10 36 16 27898 -48.5 -73.5 4 25.0 -52.9 733.0 733.1 325.5 734.1 0.11 37 15 28322 -48.7 -73.7 4 25.0 -53.2 746.0 746.1 325.8 747.1 0.12 38 12 29802 -44.9 -70.9 4 26.0 -51.7 808.7 808.8 327.5 810.9 0.22 TRP 277 9329 -58.7 -66.7 35 8.0 -58.8 325 35 309.6 309.6 285.2 309.7 0.02 WND Sounding variables and indices 1000-500 mb thick: 5293.00 m Freezing level: 878.72 mb = 1128.13 m = 3701.17 ft Wetbulb zero: Below ground Precipitable water: 0.25 inches Sfc-500 mean rel hum: 59.75 % Est. max temperature: 5.76 C = 42.37 F Sfc-Lift cond lev (LCL): 839.81 mb = 1483.01 m = 4865.47 ft T: -2.67 C 700-500 lapse rate: 5.83 C/km ThetaE index: 0.84 C Layer 850.0- 644.0 mb Conv cond level (CCL): 750.98 mb = 2354.22 m = 7723.72 ft Mean mixing ratio: 2.42 g/kg Conv temperature: 6.11 C = 42.99 F Cap Strength: 6.98 C Lifted Index: 7.08 C Risk: None Lifted Index @300 mb: 11.40 C Lifted Index @700 mb: 0.91 C Showalter Index: 7.29 C Risk: None Total Totals Index: 45.60 C Risk: Scattered moderate thunderstorms Vertical Totals Index: 26.80 C Cross Totals Index: 18.80 C K Index: 11.90 Risk: None Sweat Index: 54.00 Risk: None Energy Index: 1.78 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 7.64 J/kg Max Up Vert Vel: 3.91 m/s Conv Inhibition (B-): 62000.49 J/kg Cap Strength: 6.97 C Lift Cond Lev (LCL): 775.93 mb = 2099.47 m = 6887.95 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 359 at 19 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 ---------------------------------------------------------- 0 922 737 30 5 -2.5 -4.3 | 170 15 -2.7 14.7 1 850 1389 105 9 -8.7 2.3 | 157 23 -8.9 21.4 2 700 2902 310 23 17.6 -14.8 | 256 18 17.4 4.3 3 500 5370 335 36 15.2 -32.6 | 312 20 15.0 -13.6 4 400 6930 330 35 17.5 -30.3 | 303 21 17.3 -11.2 5 300 8820 330 38 19.0 -32.9 | 306 23 18.8 -13.8 6 277 9329 325 35 20.1 -28.7 | 296 22 19.9 -9.6 7 250 9980 335 27 11.4 -24.5 | 296 12 11.2 -5.4 8 200 11410 350 11 1.9 -10.8 | 192 8 1.7 8.2 9 150 13280 5 7 -0.6 -7.0 | 176 12 -0.8 12.1 10 100 15930 15 5 -1.3 -4.8 | 174 14 -1.5 14.2 11 70 18250 65 5 -4.5 -2.1 | 164 18 -4.7 17.0 12 50 20450 80 9 -8.9 -1.6 | 153 20 -9.0 17.5 13 30 23780 75 7 -6.8 -1.8 | 158 19 -6.9 17.3 14 20 26430 5 7 -0.6 -7.0 | 176 12 -0.8 12.1 Wind Parameters Mean winds (0-6000m): 329.5 at 25.4 knts Storm direction: 359.5 at 19.1 knts Shear (0-3000m) pos: 0.9 neg: 5.3 tot: 6.2 10-3/s Storm rel Dir Shear (0-3000m): 104.9 deg Storm rel helicity (0-3000m) pos: 28.4 neg: -76.5 tot: -48.1 m^2/s^2 ave: -16.0 10^-3 m/s^2 rel: -0.11 Storm rel vorticity (0-3000m) horiz: 10.5 stream: -1.1 10^-3/s Energy-Hel index: 0.00 Bulk Rich Number: 0.08 Bulk Shear: 99.83 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 71 7 159 18| 7.0 0.0 7.0| 0.0 -16.4 -16.4 -32.8 -0.53| 7.4 -3.9 1000 82 8 155 20| 3.5 2.7 6.2| 1.2 -47.4 -46.2 -46.2 -0.56| 8.4 -4.7 1500 56 10 147 16| 2.3 5.5 7.8| 1.2 -66.7 -65.5 -43.7 -0.48| 10.3 -4.9 2000 8 13 164 7| 1.8 6.8 8.6| 2.1 -68.9 -66.8 -33.4 -0.21| 12.6 -2.6 2500 330 15 228 10| 1.4 6.4 7.8| 11.7 -76.5 -64.7 -25.9 -0.17| 11.9 -2.1 3000 324 17 239 11| 0.9 5.3 6.2| 28.4 -76.5 -48.1 -16.0 -0.11| 10.5 -1.1 4000 325 20 257 12| 1.2 4.0 5.2| 64.5 -76.5 -11.9 -3.0 0.01| 8.8 0.1 5000 328 23 273 12| 1.4 3.2 4.6| 89.4 -79.8 9.5 1.9 0.07| 7.6 0.5 6000 329 25 283 13| 1.2 2.7 3.9| 89.4 -91.0 -1.7 -0.3 0.04| 6.5 0.3 Wrote GIF file: /home/apache/climate/data/raob//U4688/skewt/U4688.skewt.20250427.12.gif