UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025042700.upa.cvt Date: 0000Z 27 APR 25 Searching for U4688... Searching the city database file for: U4688 ... Date:0000Z 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 106 SFC 926 736 5.6 -7.4 39 13.0 0.6 40 1 284.9 285.4 277.6 291.8 2.36 2 925 745 4.2 -8.8 38 13.0 -0.5 40 1 283.6 284.0 276.5 289.8 2.12 3 896 1005 0.8 -11.2 40 12.0 -3.2 14 3 282.7 283.0 275.6 288.0 1.81 4 850 1431 -2.5 -12.5 46 10.0 -5.6 330 5 283.5 283.8 275.9 288.6 1.72 5 766 2245 -7.9 -19.9 37 12.0 -10.8 335 6 286.3 286.4 276.3 289.4 1.03 6 710 2827 -13.3 -19.3 61 6.0 -14.7 339 7 286.6 286.8 276.7 290.1 1.17 7 703 2903 -13.9 -19.9 60 6.0 -15.3 340 7 286.7 286.9 276.7 290.1 1.12 8 700 2935 -13.9 -20.9 55 7.0 -15.4 340 7 287.1 287.3 276.7 290.2 1.03 9 595 4152 -19.1 -30.1 37 11.0 -20.9 330 6 294.7 294.8 279.7 296.4 0.53 10 568 4495 -20.7 -31.7 37 11.0 -22.4 328 6 296.8 296.9 280.6 298.3 0.47 11 500 5420 -28.5 -38.5 38 10.0 -29.5 320 5 298.3 298.3 281.0 299.2 0.27 12 400 6990 -40.5 -52.5 26 12.0 -41.0 320 19 302.4 302.4 282.4 302.6 0.07 13 316 8548 -53.5 -63.5 28 10.0 -53.7 316 21 305.4 305.4 283.6 305.5 0.02 14 300 8880 -55.5 -65.5 28 10.0 -55.6 315 21 307.1 307.1 284.2 307.2 0.02 15 265 9657 -59.7 -69.7 26 10.0 -59.8 320 23 312.1 312.1 286.1 312.1 0.01 16 250 10020 -58.1 -68.1 27 10.0 -58.2 325 21 319.7 319.7 288.6 319.8 0.02 17 200 11460 -51.9 -63.9 22 12.0 -52.2 340 9 350.6 350.6 296.8 350.7 0.04 18 174 12363 -49.9 -64.9 16 15.0 -50.4 9 7 368.1 368.1 300.2 368.3 0.04 19 150 13330 -50.1 -68.1 10 18.0 -50.7 40 5 383.7 383.7 302.9 383.9 0.03 20 100 15970 -50.5 -73.5 5 23.0 -51.4 60 3 430.2 430.2 308.9 430.2 0.02 21 70 18290 -50.9 -75.9 4 25.0 -52.0 125 5 475.5 475.5 313.1 475.6 0.02 22 52 20224 -50.5 -75.5 4 25.0 -52.0 107 7 518.6 518.6 316.2 518.8 0.03 23 50 20480 -50.1 -75.1 4 25.0 -51.7 105 7 525.4 525.4 316.6 525.6 0.03 24 48 20747 -49.7 -74.7 4 25.0 -51.5 100 7 532.5 532.5 317.1 532.7 0.03 25 46 21026 -50.1 -75.1 4 25.0 -51.8 95 7 538.1 538.1 317.4 538.3 0.03 26 42 21619 -51.9 -76.9 3 25.0 -53.5 85 6 547.8 547.8 318.0 548.0 0.03 27 32 23381 -52.5 -77.5 3 25.0 -54.4 53 5 590.5 590.5 320.2 590.7 0.03 28 30 23800 -50.9 -75.9 4 25.0 -53.2 45 5 605.9 605.9 320.9 606.2 0.04 29 25 24983 -49.9 -74.9 4 25.0 -52.8 85 6 641.2 641.2 322.4 641.6 0.06 30 20 26440 -48.3 -73.3 4 25.0 -52.2 135 7 688.3 688.4 324.1 689.1 0.09 31 18 27133 -48.1 -74.1 3 26.0 -52.4 129 7 710.0 710.1 324.8 710.8 0.09 32 12 29800 -48.7 -73.7 4 25.0 -53.9 106 8 795.2 795.3 327.1 796.6 0.15 33 10 31010 -44.1 -70.1 4 26.0 -51.9 95 9 854.9 855.1 328.5 858.1 0.30 34 10 31010 -43.7 -69.7 4 26.0 -51.7 95 9 856.4 856.6 328.6 859.8 0.32 35 9.4 31426 -43.5 -69.5 4 26.0 -51.8 872.5 872.7 329.0 876.3 0.35 TRP 265 9657 -59.7 -69.7 26 10.0 -59.8 320 23 312.1 312.1 286.1 312.1 0.01 WND Sounding variables and indices 1000-500 mb thick: 5314.00 m Freezing level: 884.85 mb = 1108.62 m = 3637.15 ft Wetbulb zero: 925.46 mb = 740.97 m = 2430.98 ft Precipitable water: 0.19 inches Sfc-500 mean rel hum: 42.95 % Est. max temperature: 6.56 C = 43.81 F Sfc-Lift cond lev (LCL): 757.22 mb = 2333.65 m = 7656.23 ft T: -8.72 C 700-500 lapse rate: 5.88 C/km ThetaE index: 3.84 C Layer 925.0- 850.0 mb Conv cond level (CCL): 681.54 mb = 3135.05 m = 10285.47 ft Mean mixing ratio: 1.79 g/kg Conv temperature: 8.92 C = 48.05 F Cap Strength: 8.58 C Lifted Index: 8.80 C Risk: None Lifted Index @300 mb: 13.21 C Lifted Index @700 mb: 2.66 C Showalter Index: 8.80 C Risk: None Total Totals Index: 42.00 C Risk: None Vertical Totals Index: 26.00 C Cross Totals Index: 16.00 C K Index: 6.50 Risk: None Sweat Index: 15.00 Risk: None Energy Index: 2.20 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 4.96 J/kg Max Up Vert Vel: 3.15 m/s Conv Inhibition (B-): 67506.78 J/kg Cap Strength: 8.79 C Lift Cond Lev (LCL): 733.27 mb = 2580.14 m = 8464.93 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 359 at 5 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 ---------------------------------------------------------- 0 926 736 40 1 -0.6 -0.8 | 170 4 -0.8 4.3 1 925 745 40 1 -0.6 -0.8 | 170 4 -0.8 4.3 2 850 1431 330 5 2.5 -4.3 | 252 2 2.4 0.8 3 700 2935 340 7 2.4 -6.6 | 303 3 2.3 -1.5 4 500 5420 320 5 3.2 -3.8 | 248 3 3.1 1.3 5 400 6990 320 19 12.2 -14.6 | 308 15 12.1 -9.5 6 300 8880 315 21 14.8 -14.8 | 304 18 14.7 -9.8 7 265 9657 320 23 14.8 -17.6 | 311 19 14.7 -12.5 8 250 10020 325 21 12.0 -17.2 | 315 17 11.9 -12.1 9 200 11460 340 9 3.1 -8.5 | 319 4 3.0 -3.4 10 150 13330 40 5 -3.2 -3.8 | 111 4 -3.3 1.3 11 100 15970 60 3 -2.6 -1.5 | 143 5 -2.7 3.6 12 70 18290 125 5 -4.1 2.9 | 152 9 -4.2 8.0 13 50 20480 105 7 -6.8 1.8 | 135 10 -6.9 6.9 14 30 23800 45 5 -3.5 -3.5 | 113 4 -3.7 1.6 15 20 26440 135 7 -4.9 4.9 | 153 11 -5.1 10.0 16 10 31010 95 9 -9.0 0.8 | 123 11 -9.1 5.9 Wind Parameters Mean winds (0-6000m): 328.6 at 6.8 knts Storm direction: 358.6 at 5.1 knts Shear (0-3000m) pos: 0.3 neg: 0.8 tot: 1.1 10-3/s Storm rel Dir Shear (0-3000m): 112.5 deg Storm rel helicity (0-3000m) pos: 2.7 neg: -1.1 tot: 1.6 m^2/s^2 ave: 0.5 10^-3 m/s^2 rel: 0.40 Storm rel vorticity (0-3000m) horiz: 1.5 stream: 0.6 10^-3/s Energy-Hel index: 0.00 Bulk Rich Number: 1.56 Bulk Shear: 3.17 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 ------------------------------------------------------------------------------- 500 360 2 178 3| 0.0 3.4 3.4| 0.6 -0.4 0.2 0.4 0.23| 3.7 0.9 1000 336 4 217 2| 0.0 2.6 2.6| 1.5 -0.4 1.1 1.1 0.46| 3.1 1.4 1500 335 4 236 2| 0.3 1.8 2.0| 2.0 -0.4 1.6 1.1 0.52| 2.3 1.2 2000 336 5 251 2| 0.4 1.3 1.7| 2.5 -0.4 2.1 1.0 0.57| 1.9 1.1 2500 337 5 263 2| 0.3 1.1 1.4| 2.7 -0.7 2.0 0.8 0.51| 1.7 0.9 3000 337 5 268 2| 0.3 0.8 1.1| 2.7 -1.1 1.6 0.5 0.40| 1.5 0.6 4000 335 6 270 2| 0.2 0.6 0.8| 2.7 -2.0 0.7 0.2 0.24| 1.3 0.3 5000 333 6 268 2| 0.2 0.7 0.9| 5.0 -2.5 2.5 0.5 0.30| 1.4 0.4 6000 329 7 282 3| 0.1 1.3 1.5| 12.5 -2.5 10.0 1.7 0.33| 1.9 0.6 Wrote GIF file: /home/apache/climate/data/raob//U4688/skewt/U4688.skewt.20250427.00.gif