UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025042000.upa.cvt Date: 0000Z 20 APR 25 Searching for U4688... Searching the city database file for: U4688 ... Date:0000Z 20 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 172 SFC 931 742 -4.5 -12.5 54 8.0 -6.8 20 1 274.2 274.5 270.3 278.6 1.57 2 925 793 -5.7 -16.7 42 11.0 -8.4 35 1 273.5 273.7 269.1 276.7 1.12 3 909 929 -6.5 -16.5 45 10.0 -9.0 67 2 274.0 274.2 269.5 277.3 1.16 4 850 1453 -5.5 -15.5 45 10.0 -8.2 190 5 280.4 280.6 273.6 284.3 1.34 5 809 1842 -3.5 -13.5 46 10.0 -6.6 195 7 286.5 286.8 277.4 291.4 1.67 6 707 2902 -5.3 -28.3 14 23.0 -10.4 209 11 295.8 295.9 280.2 297.5 0.52 7 700 2980 -6.3 -29.3 14 23.0 -11.1 210 11 295.5 295.6 280.0 297.1 0.48 8 681 3193 -8.1 -32.1 13 24.0 -12.6 205 11 295.8 295.9 280.0 297.1 0.38 9 526 5133 -23.5 -43.5 14 20.0 -25.5 155 9 300.0 300.0 281.5 300.5 0.15 10 500 5500 -27.1 -46.1 15 19.0 -28.6 145 9 300.0 300.0 281.5 300.4 0.12 11 405 6985 -40.5 -57.5 14 17.0 -41.1 74 5 301.3 301.3 282.0 301.4 0.04 12 400 7070 -40.5 -57.5 14 17.0 -41.1 70 5 302.4 302.4 282.4 302.5 0.04 13 305 8873 -50.9 -65.9 15 15.0 -51.1 326 28 312.1 312.1 286.1 312.2 0.02 14 300 8980 -51.7 -66.7 15 15.0 -52.0 320 29 312.5 312.5 286.2 312.5 0.02 15 250 10140 -60.1 -72.1 19 12.0 -60.2 325 31 316.7 316.7 287.7 316.8 0.01 16 248 10190 -60.3 -72.3 19 12.0 -60.4 325 31 317.1 317.1 287.8 317.2 0.01 17 218 11005 -53.7 -65.7 22 12.0 -53.9 328 24 339.3 339.3 294.1 339.4 0.03 18 200 11560 -52.7 -64.7 22 12.0 -53.0 330 19 349.3 349.3 296.5 349.5 0.03 19 161 12954 -50.9 -64.9 17 14.0 -51.4 319 14 374.7 374.7 301.4 374.9 0.04 20 150 13410 -52.1 -66.1 17 14.0 -52.5 315 13 380.3 380.3 302.3 380.5 0.04 21 100 16050 -52.5 -68.5 13 16.0 -53.1 300 11 426.3 426.3 308.4 426.5 0.04 22 70 18360 -51.9 -68.9 11 17.0 -52.8 290 7 473.4 473.4 313.0 473.7 0.05 23 60 19359 -51.9 -68.9 11 17.0 -52.9 253 6 494.7 494.7 314.6 495.1 0.06 24 50 20540 -52.3 -69.3 11 17.0 -53.5 210 5 520.2 520.2 316.4 520.7 0.07 25 30 23840 -52.9 -69.9 11 17.0 -54.6 315 3 600.4 600.5 320.7 601.2 0.10 26 20 26450 -52.7 -69.7 11 17.0 -55.1 45 7 674.9 674.9 323.6 676.2 0.16 27 11 30302 -53.7 -71.7 9 18.0 -57.2 797.1 797.2 327.2 799.2 0.22 TRP 248 10190 -60.3 -72.3 19 12.0 -60.4 325 31 317.1 317.1 287.8 317.2 0.01 WND Sounding variables and indices 1000-500 mb thick: 5328.00 m Freezing level: Surface below freezing Wetbulb zero: Below ground Precipitable water: 0.14 inches Sfc-500 mean rel hum: 24.27 % Est. max temperature: 9.90 C = 49.82 F Sfc-Lift cond lev (LCL): 820.07 mb = 1734.87 m = 5691.75 ft T: -4.05 C 700-500 lapse rate: 8.25 C/km ThetaE index: 1.95 C Layer 925.0- 909.0 mb Conv cond level (CCL): 544.92 mb = 4867.75 m = 15970.13 ft Mean mixing ratio: 1.27 g/kg Conv temperature: 20.28 C = 68.51 F Cap Strength: 16.38 C Lifted Index: 15.98 C Risk: None Lifted Index @300 mb: 22.28 C Lifted Index @700 mb: 15.56 C Showalter Index: 13.43 C Risk: None Total Totals Index: 33.20 C Risk: None Vertical Totals Index: 21.60 C Cross Totals Index: 11.60 C K Index: -16.90 Risk: None Sweat Index: 19.00 Risk: None Energy Index: 3.53 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 28.32 J/kg Max Up Vert Vel: 7.53 m/s Conv Inhibition (B-): 60353.28 J/kg Cap Strength: 16.34 C Lift Cond Lev (LCL): 749.74 mb = 2440.31 m = 8006.18 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 207 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 ---------------------------------------------------------- 0 931 742 20 1 -0.3 -0.9 | 26 7 -3.1 -6.4 1 925 793 35 1 -0.6 -0.8 | 28 7 -3.3 -6.3 2 850 1453 190 5 0.9 4.9 | 75 2 -1.9 -0.5 3 700 2980 210 11 5.5 9.5 | 214 5 2.7 4.1 4 500 5500 145 9 -5.2 7.4 | 104 8 -7.9 1.9 5 400 7070 70 5 -4.7 -1.7 | 46 10 -7.5 -7.1 6 300 8980 320 29 18.6 -22.2 | 330 32 15.9 -27.6 7 250 10140 325 31 17.8 -25.4 | 334 34 15.0 -30.8 8 248 10190 325 31 17.8 -25.4 | 334 34 15.0 -30.8 9 200 11560 330 19 9.5 -16.5 | 343 23 6.7 -21.9 10 150 13410 315 13 9.2 -9.2 | 336 16 6.4 -14.6 11 100 16050 300 11 9.5 -5.5 | 328 13 6.8 -10.9 12 70 18360 290 7 6.6 -2.4 | 334 9 3.8 -7.8 13 50 20540 210 5 2.5 4.3 | 14 1 -0.3 -1.1 14 30 23840 315 3 2.1 -2.1 | 5 8 -0.6 -7.6 15 20 26450 45 7 -4.9 -4.9 | 37 13 -7.7 -10.4 Wind Parameters Mean winds (0-6000m): 177.0 at 8.1 knts Storm direction: 207.0 at 6.1 knts Shear (0-3000m) pos: 1.9 neg: 0.5 tot: 2.4 10-3/s Storm rel Dir Shear (0-3000m): 143.3 deg Storm rel helicity (0-3000m) pos: 12.6 neg: -4.5 tot: 8.0 m^2/s^2 ave: 2.7 10^-3 m/s^2 rel: 0.34 Storm rel vorticity (0-3000m) horiz: 3.3 stream: 1.1 10^-3/s Energy-Hel index: 0.00 Bulk Rich Number: 4.21 Bulk Shear: 6.72 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 ------------------------------------------------------------------------------- 500 121 2 47 6| 4.4 0.0 4.4| 8.7 0.0 8.7 17.3 0.86| 5.5 4.8 1000 188 4 51 3| 3.7 0.0 3.7| 10.2 0.0 10.2 10.2 0.63| 5.4 3.4 1500 194 5 64 2| 3.1 0.0 3.1| 11.0 0.0 11.0 7.4 0.68| 4.3 2.9 2000 199 6 96 1| 2.8 0.0 2.8| 12.0 0.0 12.0 6.0 0.66| 3.8 2.5 2500 203 7 169 1| 2.3 0.2 2.5| 12.6 -1.5 11.1 4.4 0.54| 3.5 1.9 3000 201 7 177 1| 1.9 0.5 2.4| 12.6 -4.5 8.0 2.7 0.34| 3.3 1.1 4000 195 8 163 3| 1.4 0.9 2.3| 12.6 -10.8 1.8 0.4 0.10| 3.1 0.3 5000 186 8 147 3| 1.1 1.1 2.3| 12.6 -20.1 -7.5 -1.5 -0.07| 3.0 -0.2 6000 177 8 130 4| 0.9 1.2 2.1| 12.6 -36.3 -23.7 -4.0 -0.23| 3.0 -0.7 Wrote GIF file: /home/apache/climate/data/raob//U4688/skewt/U4688.skewt.20250420.00.gif