UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025050212.upa.cvt Date: 1200Z 2 MAY 25 Searching for U4688... Searching the city database file for: U4688 ... Date:1200Z 2 MAY 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 90 1 925 717 20 1 SFC 922 743 -1.1 -2.9 88 1.8 -1.8 20 1 278.4 279.0 275.5 287.7 3.34 3 914 812 0.0 -2.2 85 2.2 -0.9 33 1 280.3 280.9 276.7 290.2 3.55 4 870 1204 -1.7 -6.5 70 4.8 -3.4 106 2 282.5 282.9 276.7 290.2 2.70 5 860 1295 -2.7 -7.7 68 5.0 -4.5 123 3 282.4 282.8 276.4 289.5 2.49 6 850 1387 -3.3 -8.3 68 5.0 -5.0 140 3 282.7 283.1 276.5 289.6 2.40 7 700 2891 -14.9 -19.3 69 4.4 -15.9 45 3 286.0 286.2 276.4 289.6 1.18 8 639 3569 -20.5 -23.5 77 3.0 -21.0 92 4 287.2 287.3 276.6 289.9 0.90 9 541 4773 -29.5 -34.0 65 4.5 -30.0 179 5 290.5 290.5 277.5 291.7 0.40 10 500 5330 -32.1 -39.1 50 7.0 -32.7 220 5 293.9 293.9 279.0 294.8 0.26 11 480 5619 -34.3 -42.3 44 8.0 -34.8 225 5 294.6 294.7 279.2 295.3 0.19 12 400 6880 -43.1 -52.1 37 9.0 -43.4 245 5 299.0 299.0 281.0 299.3 0.08 13 386 7118 -44.9 -53.9 36 9.0 -45.2 247 8 299.7 299.7 281.3 299.9 0.06 14 311 8537 -51.9 -60.9 33 9.0 -52.1 260 23 309.0 309.0 285.0 309.1 0.03 15 309 8579 -52.1 -61.1 33 9.0 -52.2 260 23 309.3 309.3 285.1 309.4 0.03 16 300 8770 -51.7 -60.7 33 9.0 -51.9 260 25 312.5 312.5 286.2 312.6 0.04 17 250 9960 -48.7 -58.7 30 10.0 -49.0 265 27 333.7 333.7 292.7 333.9 0.06 18 242 10172 -48.3 -59.3 27 11.0 -48.7 266 26 337.4 337.4 293.7 337.6 0.05 19 200 11420 -48.1 -62.1 18 14.0 -48.6 270 19 356.6 356.6 298.1 356.8 0.04 20 150 13320 -50.7 -68.7 10 18.0 -51.2 280 15 382.7 382.7 302.7 382.8 0.02 21 100 15970 -50.1 -70.1 8 20.0 -51.0 250 7 430.9 430.9 309.0 431.1 0.03 22 70 18290 -49.7 -71.7 6 22.0 -51.0 270 5 478.1 478.1 313.3 478.3 0.03 23 50 20490 -50.3 -73.3 5 23.0 -51.9 190 5 524.9 524.9 316.6 525.2 0.04 24 30 23840 -49.5 -73.5 4 24.0 -52.1 150 5 609.7 609.7 321.0 610.2 0.06 25 24 25307 -49.3 -73.3 4 24.0 -52.4 111 6 650.5 650.5 322.7 651.1 0.08 26 20 26510 -47.5 -72.5 4 25.0 -51.6 80 7 690.8 690.8 324.1 691.7 0.11 27 14 28874 -46.3 -72.3 4 26.0 -52.0 769.0 769.1 326.5 770.5 0.16 28 13 29370 -42.7 -69.7 4 27.0 -50.1 798.0 798.1 327.3 800.4 0.25 29 11 30493 -44.5 -70.5 4 26.0 -51.7 830.5 830.6 328.0 833.2 0.26 TRP 311 8537 -51.9 -60.9 33 9.0 -52.1 260 23 309.0 309.0 285.0 309.1 0.03 WND Sounding variables and indices 1000-500 mb thick: 5240.00 m Freezing level: Surface below freezing Freezing level: 914.00 mb = 811.99 m = 2663.97 ft Freezing level: 914.00 mb = 811.99 m = 2663.97 ft Wetbulb zero: Below ground Precipitable water: 0.26 inches Sfc-500 mean rel hum: 69.43 % Est. max temperature: 4.71 C = 40.47 F Sfc-Lift cond lev (LCL): 896.28 mb = 967.41 m = 3173.88 ft T: -0.67 C 700-500 lapse rate: 7.05 C/km ThetaE index: 0.70 C Layer 870.0- 850.0 mb Conv cond level (CCL): 794.78 mb = 1907.37 m = 6257.71 ft Mean mixing ratio: 2.78 g/kg Conv temperature: 4.22 C = 39.59 F Cap Strength: 1.89 C Lifted Index: 4.27 C Risk: None Lifted Index @300 mb: 16.10 C Lifted Index @700 mb: 0.84 C Showalter Index: 4.44 C Risk: None Total Totals Index: 52.60 C Risk: Scattered heavy thunderstorms Vertical Totals Index: 28.80 C Cross Totals Index: 23.80 C K Index: 16.10 Risk: < 20 % chance of thunderstorms Sweat Index: 83.00 Risk: None Energy Index: 1.00 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 13.73 J/kg Max Up Vert Vel: 5.24 m/s Conv Inhibition (B-): 59559.91 J/kg Cap Strength: 3.75 C Lift Cond Lev (LCL): 818.27 mb = 1681.75 m = 5517.47 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 236 at 3 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 ---------------------------------------------------------- 0 922 743 20 1 -0.3 -0.9 | 47 4 -2.7 -2.5 1 850 1387 140 3 -1.9 2.3 | 99 4 -4.3 0.7 2 700 2891 45 3 -2.1 -2.1 | 50 6 -4.5 -3.7 3 500 5330 220 5 3.2 3.8 | 201 2 0.9 2.2 4 400 6880 245 5 4.5 2.1 | 257 2 2.2 0.5 5 311 8537 260 23 22.7 4.0 | 263 20 20.3 2.4 6 300 8770 260 25 24.6 4.3 | 263 22 22.3 2.7 7 250 9960 265 27 26.9 2.4 | 268 25 24.5 0.7 8 200 11420 270 19 19.0 -0.0 | 276 17 16.6 -1.6 9 150 13320 280 15 14.8 -2.6 | 289 13 12.4 -4.2 10 100 15970 250 7 6.6 2.4 | 259 4 4.2 0.8 11 70 18290 270 5 5.0 -0.0 | 301 3 2.6 -1.6 12 50 20490 190 5 0.9 4.9 | 156 4 -1.5 3.3 13 30 23840 150 5 -2.5 4.3 | 119 6 -4.9 2.7 14 20 26510 80 7 -6.9 -1.2 | 73 10 -9.3 -2.8 Wind Parameters Mean winds (0-6000m): 205.7 at 3.8 knts Storm direction: 235.7 at 2.9 knts Shear (0-3000m) pos: 1.1 neg: 0.5 tot: 1.6 10-3/s Storm rel Dir Shear (0-3000m): 37.7 deg Storm rel helicity (0-3000m) pos: 10.4 neg: -6.2 tot: 4.2 m^2/s^2 ave: 1.4 10^-3 m/s^2 rel: 0.25 Storm rel vorticity (0-3000m) horiz: 2.2 stream: 0.5 10^-3/s Energy-Hel index: 0.00 Bulk Rich Number: 5.83 Bulk Shear: 2.36 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 ------------------------------------------------------------------------------- 500 115 2 78 4| 2.9 0.0 2.9| 3.5 0.0 3.5 6.9 0.88| 3.4 3.0 1000 125 2 87 4| 1.7 0.0 1.7| 4.9 -1.0 3.9 3.9 0.59| 2.8 1.7 1500 115 3 84 5| 1.1 0.6 1.7| 4.9 -3.2 1.7 1.1 0.24| 2.4 0.6 2000 102 3 78 5| 0.8 0.8 1.7| 4.9 -5.7 -0.8 -0.4 0.01| 2.3 0.0 2500 90 3 73 5| 0.9 0.6 1.5| 6.8 -6.2 0.6 0.3 0.09| 2.1 0.2 3000 91 3 73 5| 1.1 0.5 1.6| 10.4 -6.2 4.2 1.4 0.25| 2.2 0.5 4000 116 3 87 5| 1.1 0.4 1.5| 16.7 -6.2 10.5 2.6 0.44| 2.3 1.0 5000 168 4 121 4| 0.9 0.3 1.2| 19.6 -6.2 13.4 2.7 0.53| 2.3 1.2 6000 206 4 159 2| 0.7 0.3 0.9| 20.4 -6.2 14.2 2.4 0.56| 2.0 1.1 Wrote GIF file: /home/apache/climate/data/raob//U4688/skewt/U4688.skewt.20250502.12.gif