UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025043000.upa.cvt Date: 0000Z 30 APR 25 Searching for U4688... Searching the city database file for: U4688 ... Date:0000Z 30 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 118 SFC 926 739 -0.5 -2.9 84 2.4 -1.4 10 3 278.7 279.3 275.6 288.0 3.33 2 925 748 -0.7 -3.4 82 2.7 -1.7 10 3 278.6 279.1 275.4 287.5 3.21 3 887 1082 -4.3 -7.4 79 3.1 -5.4 77 4 278.2 278.6 274.1 285.2 2.47 4 850 1418 -5.5 -8.4 80 2.9 -6.5 145 5 280.4 280.8 275.2 287.2 2.38 5 803 1862 -7.1 -10.7 75 3.6 -8.2 174 4 283.3 283.6 276.3 289.4 2.10 6 700 2916 -14.7 -19.4 67 4.7 -15.7 245 3 286.2 286.4 276.5 289.8 1.17 7 645 3526 -18.9 -24.9 59 6.0 -20.0 254 5 288.2 288.4 277.0 290.7 0.79 8 585 4240 -25.3 -31.3 57 6.0 -26.1 264 8 288.9 289.0 276.9 290.5 0.48 9 553 4645 -26.5 -35.5 42 9.0 -27.5 270 10 292.2 292.2 278.3 293.3 0.34 10 535 4882 -28.5 -38.5 38 10.0 -29.5 273 11 292.6 292.6 278.3 293.4 0.26 11 500 5360 -32.3 -40.3 45 8.0 -32.9 280 13 293.7 293.7 278.8 294.4 0.23 12 400 6900 -45.1 -52.1 45 7.0 -45.3 255 15 296.4 296.4 279.8 296.7 0.08 13 380 7242 -47.7 -54.7 44 7.0 -47.9 246 13 297.3 297.3 280.3 297.5 0.06 14 318 8411 -52.3 -60.3 38 8.0 -52.5 215 5 306.5 306.5 284.0 306.6 0.04 15 300 8790 -51.9 -60.9 33 9.0 -52.1 255 5 312.2 312.2 286.2 312.3 0.04 16 250 9970 -50.1 -61.1 26 11.0 -50.4 280 9 331.6 331.6 292.2 331.8 0.04 17 228 10571 -47.7 -60.7 21 13.0 -48.1 280 9 344.1 344.1 295.3 344.3 0.05 18 200 11430 -48.5 -64.5 14 16.0 -49.0 280 9 356.0 356.0 297.9 356.1 0.03 19 150 13330 -49.3 -68.3 9 19.0 -49.9 310 9 385.1 385.1 303.1 385.2 0.03 20 100 15980 -50.5 -71.5 7 21.0 -51.3 330 5 430.2 430.2 308.9 430.3 0.02 21 70 18310 -49.9 -72.9 5 23.0 -51.1 80 5 477.6 477.6 313.2 477.8 0.03 22 50 20510 -50.5 -74.5 4 24.0 -52.1 150 5 524.5 524.5 316.6 524.7 0.03 23 46 21051 -51.3 -75.3 4 24.0 -52.8 142 5 535.2 535.2 317.2 535.4 0.03 24 35 22832 -48.7 -73.7 4 25.0 -51.2 115 4 585.5 585.5 319.9 585.9 0.05 25 30 23840 -50.3 -75.3 4 25.0 -52.7 100 3 607.5 607.5 321.0 607.9 0.05 26 27 24527 -50.7 -75.7 4 25.0 -53.2 625.0 625.0 321.7 625.3 0.05 27 26 24775 -47.7 -73.7 3 26.0 -51.1 640.3 640.3 322.3 640.8 0.07 TRP 318 8411 -52.3 -60.3 38 8.0 -52.5 215 5 306.5 306.5 284.0 306.6 0.04 WND Sounding variables and indices 1000-500 mb thick: 5242.00 m Freezing level: Surface below freezing Wetbulb zero: Below ground Precipitable water: 0.25 inches Sfc-500 mean rel hum: 63.04 % Est. max temperature: 4.70 C = 40.46 F Sfc-Lift cond lev (LCL): 891.82 mb = 1038.72 m = 3407.84 ft T: -3.83 C 700-500 lapse rate: 7.20 C/km ThetaE index: 2.80 C Layer 925.0- 850.0 mb Conv cond level (CCL): 781.68 mb = 2068.86 m = 6787.53 ft Mean mixing ratio: 2.56 g/kg Conv temperature: 4.54 C = 40.18 F Cap Strength: 5.99 C Lifted Index: 6.47 C Risk: None Lifted Index @300 mb: 18.16 C Lifted Index @700 mb: 3.18 C Showalter Index: 6.06 C Risk: None Total Totals Index: 50.70 C Risk: Scattered heavy thunderstorms Vertical Totals Index: 26.80 C Cross Totals Index: 23.90 C K Index: 13.70 Risk: None Sweat Index: 57.00 Risk: None Energy Index: 1.47 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 13.59 J/kg Max Up Vert Vel: 5.21 m/s Conv Inhibition (B-): 43652.16 J/kg Cap Strength: 6.40 C Lift Cond Lev (LCL): 835.16 mb = 1555.57 m = 5103.53 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 295 at 6 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 ---------------------------------------------------------- 0 926 739 10 3 -0.5 -3.0 | 86 6 -6.0 -0.4 1 925 748 10 3 -0.5 -3.0 | 86 6 -6.0 -0.4 2 850 1418 145 5 -2.9 4.1 | 128 11 -8.4 6.6 3 700 2916 245 3 2.7 1.3 | 144 5 -2.8 3.8 4 500 5360 280 13 12.8 -2.3 | 268 7 7.3 0.3 5 400 6900 255 15 14.5 3.9 | 235 11 9.0 6.4 6 318 8411 215 5 2.9 4.1 | 158 7 -2.6 6.6 7 300 8790 255 5 4.8 1.3 | 170 4 -0.7 3.8 8 250 9970 280 9 8.9 -1.6 | 254 4 3.4 0.9 9 200 11430 280 9 8.9 -1.6 | 254 4 3.4 0.9 10 150 13330 310 9 6.9 -5.8 | 337 4 1.4 -3.3 11 100 15980 330 5 2.5 -4.3 | 59 4 -3.0 -1.8 12 70 18310 80 5 -4.9 -0.9 | 99 11 -10.4 1.6 13 50 20510 150 5 -2.5 4.3 | 131 11 -8.0 6.8 14 30 23840 100 3 -3.0 0.5 | 110 9 -8.4 3.0 Wind Parameters Mean winds (0-6000m): 264.6 at 8.1 knts Storm direction: 294.6 at 6.0 knts Shear (0-3000m) pos: 1.4 neg: 0.0 tot: 1.4 10-3/s Storm rel Dir Shear (0-3000m): 104.3 deg Storm rel helicity (0-3000m) pos: 30.0 neg: -0.4 tot: 29.6 m^2/s^2 ave: 9.9 10^-3 m/s^2 rel: 0.66 Storm rel vorticity (0-3000m) horiz: 3.5 stream: 2.3 10^-3/s Energy-Hel index: 0.00 Bulk Rich Number: 0.75 Bulk Shear: 18.13 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 4 98 9| 5.9 0.0 5.9| 10.3 0.0 10.3 20.5 0.64| 6.8 4.3 1000 134 4 122 10| 3.8 0.0 3.8| 22.6 0.0 22.6 22.6 0.76| 5.9 4.5 1500 153 4 130 10| 2.4 0.0 2.4| 25.8 0.0 25.8 17.2 0.72| 4.8 3.5 2000 163 4 134 9| 1.5 0.0 1.5| 26.3 -0.2 26.1 13.1 0.63| 4.2 2.6 2500 177 4 139 9| 1.3 0.0 1.3| 27.7 -0.4 27.3 10.9 0.62| 3.7 2.3 3000 203 4 149 7| 1.4 0.0 1.4| 30.0 -0.4 29.6 9.9 0.66| 3.5 2.3 4000 244 5 171 5| 1.5 0.0 1.5| 35.2 -0.4 34.8 8.7 0.71| 3.2 2.3 5000 264 7 200 3| 1.3 0.1 1.5| 39.3 -2.8 36.5 7.3 0.65| 3.0 1.9 6000 265 8 218 4| 1.1 0.5 1.6| 39.3 -11.2 28.0 4.7 0.46| 2.9 1.3 Wrote GIF file: /home/apache/climate/data/raob//U4688/skewt/U4688.skewt.20250430.00.gif