UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025043012.upa.cvt Date: 1200Z 30 APR 25 Searching for U4688... Searching the city database file for: U4688 ... Date:1200Z 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 113 SFC 926 737 0.0 0.0 100 0.0 0.0 30 5 279.2 279.9 277.0 290.6 4.13 2 925 746 -0.5 -2.4 87 1.9 -1.3 30 5 278.8 279.4 275.8 288.4 3.46 3 875 1185 -3.1 -6.2 79 3.1 -4.2 119 5 280.6 281.0 275.8 288.3 2.74 4 850 1412 -4.1 -6.8 81 2.7 -5.1 165 5 281.9 282.3 276.4 289.5 2.70 5 825 1647 -5.3 -8.1 81 2.8 -6.2 185 5 283.0 283.4 276.7 290.2 2.51 6 700 2915 -14.5 -18.7 70 4.2 -15.5 295 7 286.4 286.6 276.7 290.2 1.25 7 525 5026 -30.3 -34.9 64 4.6 -30.8 274 12 292.0 292.1 278.3 293.2 0.38 8 500 5370 -33.5 -38.3 62 4.8 -33.9 270 13 292.2 292.2 278.2 293.1 0.28 9 404 6824 -46.5 -51.4 57 4.9 -46.7 299 9 293.7 293.7 278.6 294.0 0.08 10 400 6890 -46.7 -51.6 57 4.9 -46.9 300 9 294.3 294.3 278.9 294.6 0.08 11 320 8352 -52.1 -58.1 48 6.0 -52.2 5 7 306.2 306.2 284.0 306.4 0.05 12 300 8770 -51.9 -57.9 48 6.0 -52.0 350 7 312.2 312.2 286.2 312.4 0.05 13 250 9960 -49.5 -57.5 39 8.0 -49.8 295 11 332.5 332.5 292.4 332.7 0.06 14 218 10855 -48.1 -58.1 31 10.0 -48.5 304 10 347.9 347.9 296.3 348.2 0.07 15 200 11420 -48.5 -59.5 27 11.0 -48.9 310 9 356.0 356.0 298.0 356.2 0.06 16 150 13320 -49.7 -64.7 16 15.0 -50.3 330 5 384.4 384.4 303.0 384.6 0.04 17 100 15950 -50.3 -68.3 10 18.0 -51.1 335 7 430.5 430.5 308.9 430.7 0.04 18 70 18280 -49.5 -68.5 9 19.0 -50.7 260 5 478.5 478.5 313.4 478.8 0.05 19 50 20490 -49.7 -69.7 8 20.0 -51.3 175 3 526.4 526.4 316.7 526.8 0.06 20 30 23830 -50.3 -70.3 8 20.0 -52.6 160 3 607.5 607.5 321.0 608.3 0.10 21 27 24515 -50.9 -70.9 8 20.0 -53.3 121 4 624.4 624.5 321.7 625.2 0.10 22 24 25287 -46.9 -67.9 7 21.0 -50.5 77 4 657.4 657.5 323.0 658.8 0.17 23 20 26490 -48.3 -69.3 7 21.0 -52.0 10 5 688.3 688.4 324.1 689.8 0.17 24 18 27183 -48.7 -69.7 7 21.0 -52.6 708.1 708.2 324.7 709.7 0.18 25 13 29341 -44.9 -67.9 6 23.0 -51.2 790.4 790.5 327.1 793.5 0.32 TRP 320 8352 -52.1 -58.1 48 6.0 -52.2 5 7 306.2 306.2 284.0 306.4 0.05 WND Sounding variables and indices 1000-500 mb thick: 5257.00 m Freezing level: 926.00 mb = 737.24 m = 2418.74 ft Wetbulb zero: 925.98 mb = 737.37 m = 2419.18 ft Precipitable water: 0.29 inches Sfc-500 mean rel hum: 71.86 % Est. max temperature: 4.98 C = 40.96 F Sfc-Lift cond lev (LCL): 925.83 mb = 738.75 m = 2423.69 ft T: -0.09 C 700-500 lapse rate: 7.74 C/km ThetaE index: 2.30 C Layer 925.0- 850.0 mb Conv cond level (CCL): 805.71 mb = 1829.53 m = 6002.32 ft Mean mixing ratio: 2.89 g/kg Conv temperature: 4.19 C = 39.55 F Cap Strength: 3.66 C Lifted Index: 3.57 C Risk: None Lifted Index @300 mb: 16.55 C Lifted Index @700 mb: 1.83 C Showalter Index: 3.07 C Risk: None Total Totals Index: 56.10 C Risk: Severe Thunderstorms probable Vertical Totals Index: 29.40 C Cross Totals Index: 26.70 C K Index: 18.40 Risk: < 20 % chance of thunderstorms Sweat Index: 165.00 Risk: None Energy Index: 0.73 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 16.98 J/kg Max Up Vert Vel: 5.83 m/s Conv Inhibition (B-): 57726.64 J/kg Cap Strength: 3.63 C Lift Cond Lev (LCL): 839.62 mb = 1508.68 m = 4949.68 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 307 at 7 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 ---------------------------------------------------------- 0 926 737 30 5 -2.5 -4.3 | 88 8 -7.8 -0.3 1 925 746 30 5 -2.5 -4.3 | 88 8 -7.8 -0.3 2 850 1412 165 5 -1.3 4.8 | 143 11 -6.6 8.8 3 700 2915 295 7 6.3 -3.0 | 226 2 1.1 1.0 4 500 5370 270 13 13.0 -0.0 | 243 9 7.7 4.0 5 400 6890 300 9 7.8 -4.5 | 281 3 2.5 -0.5 6 320 8352 5 7 -0.6 -7.0 | 63 7 -5.9 -3.0 7 300 8770 350 7 1.2 -6.9 | 54 5 -4.0 -2.9 8 250 9960 295 11 10.0 -4.6 | 278 5 4.7 -0.7 9 200 11420 310 9 6.9 -5.8 | 318 2 1.6 -1.8 10 150 13320 330 5 2.5 -4.3 | 83 3 -2.8 -0.3 11 100 15950 335 7 3.0 -6.3 | 45 3 -2.3 -2.3 12 70 18280 260 5 4.9 0.9 | 176 5 -0.3 4.9 13 50 20490 175 3 -0.3 3.0 | 142 9 -5.5 7.0 14 30 23830 160 3 -1.0 2.8 | 137 9 -6.3 6.8 15 20 26490 10 5 -0.9 -4.9 | 81 6 -6.1 -0.9 Wind Parameters Mean winds (0-6000m): 277.2 at 8.8 knts Storm direction: 307.2 at 6.6 knts Shear (0-3000m) pos: 1.7 neg: 0.2 tot: 1.9 10-3/s Storm rel Dir Shear (0-3000m): 159.6 deg Storm rel helicity (0-3000m) pos: 48.8 neg: 0.0 tot: 48.8 m^2/s^2 ave: 16.3 10^-3 m/s^2 rel: 0.73 Storm rel vorticity (0-3000m) horiz: 4.8 stream: 3.5 10^-3/s Energy-Hel index: 0.01 Bulk Rich Number: 0.69 Bulk Shear: 24.64 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 79 5 107 11| 7.9 0.0 7.9| 20.3 0.0 20.3 40.6 0.85| 8.9 7.6 1000 142 5 134 12| 5.3 0.0 5.3| 36.2 0.0 36.2 36.2 0.89| 7.4 6.6 1500 184 5 152 10| 3.7 0.0 3.7| 44.2 0.0 44.2 29.5 0.87| 6.4 5.6 2000 222 6 169 8| 2.5 0.0 2.5| 47.8 0.0 47.8 23.9 0.79| 6.1 4.8 2500 262 6 187 5| 2.0 0.0 2.0| 48.5 0.0 48.5 19.4 0.76| 5.4 4.1 3000 274 6 196 4| 1.7 0.2 1.9| 48.8 0.0 48.8 16.3 0.73| 4.8 3.5 4000 277 7 213 4| 1.3 0.6 1.8| 48.8 -0.3 48.5 12.1 0.65| 4.0 2.6 5000 275 8 223 5| 0.9 0.6 1.5| 50.7 -1.2 49.6 9.9 0.60| 3.6 2.1 6000 277 9 230 5| 0.5 0.5 1.0| 53.7 -1.2 52.5 8.8 0.58| 3.3 2.0 Wrote GIF file: /home/apache/climate/data/raob//U4688/skewt/U4688.skewt.20250430.12.gif