UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025042612.upa.cvt Date: 1200Z 26 APR 25 Searching for U4688... Searching the city database file for: U4688 ... Date:1200Z 26 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 133 SFC 928 738 0.2 -6.8 59 7.0 -2.3 40 1 279.3 279.7 274.7 286.2 2.47 2 925 764 1.4 -6.6 55 8.0 -1.6 40 3 280.7 281.2 275.6 287.9 2.52 3 908 912 4.8 -5.2 48 10.0 0.8 38 4 285.7 286.2 278.6 294.0 2.85 4 883 1136 2.8 -9.2 41 12.0 -1.6 35 5 285.9 286.3 277.8 292.3 2.15 5 850 1439 0.2 -10.8 43 11.0 -3.6 30 7 286.4 286.7 277.7 292.2 1.97 6 700 2964 -13.1 -17.1 72 4.0 -14.1 265 5 288.0 288.2 277.8 292.3 1.43 7 674 3250 -15.9 -19.2 76 3.3 -16.7 271 6 288.0 288.2 277.5 291.7 1.24 8 669 3306 -15.9 -19.1 76 3.2 -16.6 272 6 288.6 288.8 277.9 292.4 1.26 9 608 4022 -18.1 -34.1 23 16.0 -20.4 288 9 294.1 294.1 279.2 295.2 0.35 10 584 4322 -18.3 -30.3 34 12.0 -20.3 295 10 297.2 297.3 280.9 299.0 0.53 11 500 5460 -26.9 -39.9 28 13.0 -28.2 320 15 300.2 300.3 281.8 301.1 0.24 12 400 7030 -40.1 -51.1 30 11.0 -40.6 325 15 302.9 302.9 282.7 303.2 0.09 13 300 8920 -56.1 -65.1 31 9.0 -56.2 320 17 306.3 306.3 284.0 306.3 0.02 14 278 9403 -59.5 -68.5 30 9.0 -59.6 320 17 308.1 308.1 284.6 308.2 0.01 15 263 9752 -60.5 -68.5 34 8.0 -60.6 320 17 311.6 311.6 285.9 311.6 0.01 16 250 10070 -59.1 -67.1 35 8.0 -59.2 320 17 318.2 318.2 288.2 318.3 0.02 17 218 10936 -54.9 -62.9 36 8.0 -55.1 326 11 337.4 337.4 293.7 337.6 0.04 18 209 11207 -53.1 -62.1 33 9.0 -53.3 328 9 344.3 344.3 295.4 344.5 0.04 19 200 11490 -53.7 -62.7 32 9.0 -53.9 330 7 347.7 347.7 296.2 347.9 0.04 20 150 13350 -51.3 -64.3 20 13.0 -51.7 310 3 381.7 381.7 302.5 381.9 0.04 21 126 14480 -51.1 -66.1 15 15.0 -51.7 2 3 401.6 401.6 305.5 401.8 0.04 22 100 15980 -51.1 -68.1 11 17.0 -51.8 70 3 429.0 429.0 308.7 429.2 0.04 23 70 18300 -50.9 -70.9 8 20.0 -52.0 115 5 475.5 475.5 313.1 475.7 0.04 24 50 20480 -50.9 -72.9 6 22.0 -52.4 75 5 523.5 523.5 316.5 523.8 0.04 25 46 21022 -51.3 -73.3 6 22.0 -52.8 69 5 535.2 535.2 317.2 535.5 0.04 26 30 23800 -51.3 -74.3 5 23.0 -53.5 40 5 604.8 604.8 320.9 605.2 0.05 27 29 24022 -51.3 -74.3 5 23.0 -53.5 49 5 610.7 610.7 321.1 611.1 0.06 28 28 24252 -51.5 -74.5 5 23.0 -53.8 58 5 616.3 616.3 321.3 616.7 0.06 29 25 24994 -51.1 -74.1 5 23.0 -53.7 87 5 637.7 637.8 322.2 638.3 0.07 30 21 26138 -49.9 -73.9 4 24.0 -53.2 132 5 674.0 674.0 323.6 674.6 0.08 31 20 26460 -48.1 -73.1 4 25.0 -52.0 145 5 688.9 689.0 324.1 689.8 0.10 32 10 31050 -44.3 -70.3 4 26.0 -52.0 70 7 854.2 854.3 328.5 857.3 0.29 33 9.5 31394 -43.7 -69.7 4 26.0 -51.8 869.1 869.3 328.9 872.7 0.34 34 8.3 32305 -42.3 -69.3 4 27.0 -51.7 908.8 909.0 329.7 913.4 0.41 TRP 263 9752 -60.5 -68.5 34 8.0 -60.6 320 17 311.6 311.6 285.9 311.6 0.01 WND Sounding variables and indices 1000-500 mb thick: 5327.00 m Freezing level: 847.74 mb = 1461.93 m = 4796.31 ft Wetbulb zero: Below ground Precipitable water: 0.24 inches Sfc-500 mean rel hum: 47.35 % Est. max temperature: 7.96 C = 46.33 F Sfc-Lift cond lev (LCL): 831.71 mb = 1609.86 m = 5281.62 ft T: -1.29 C 700-500 lapse rate: 5.53 C/km ThetaE index: 1.81 C Layer 883.0- 700.0 mb Conv cond level (CCL): 719.34 mb = 2749.98 m = 9022.13 ft Mean mixing ratio: 2.25 g/kg Conv temperature: 8.56 C = 47.41 F Cap Strength: 6.70 C Lifted Index: 7.77 C Risk: None Lifted Index @300 mb: 10.09 C Lifted Index @700 mb: 1.18 C Showalter Index: 7.71 C Risk: None Total Totals Index: 43.20 C Risk: None Vertical Totals Index: 27.10 C Cross Totals Index: 16.10 C K Index: 12.30 Risk: None Sweat Index: 29.00 Risk: None Energy Index: 1.84 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 16.72 J/kg Max Up Vert Vel: 5.78 m/s Conv Inhibition (B-): 65024.28 J/kg Cap Strength: 7.71 C Lift Cond Lev (LCL): 743.74 mb = 2487.97 m = 8162.52 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 351 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 ---------------------------------------------------------- 0 928 738 40 1 -0.6 -0.8 | 164 7 -1.8 6.3 1 925 764 40 3 -1.9 -2.3 | 147 6 -3.1 4.8 2 850 1439 30 7 -3.5 -6.1 | 102 5 -4.7 1.0 3 700 2964 265 5 5.0 0.4 | 207 8 3.8 7.5 4 500 5460 320 15 9.6 -11.5 | 298 10 8.5 -4.4 5 400 7030 325 15 8.6 -12.3 | 305 9 7.4 -5.2 6 300 8920 320 17 10.9 -13.0 | 301 11 9.7 -5.9 7 263 9752 320 17 10.9 -13.0 | 301 11 9.7 -5.9 8 250 10070 320 17 10.9 -13.0 | 301 11 9.7 -5.9 9 200 11490 330 7 3.5 -6.1 | 246 3 2.3 1.0 10 150 13350 310 3 2.3 -1.9 | 192 5 1.1 5.2 11 100 15980 70 3 -2.8 -1.0 | 147 7 -4.0 6.1 12 70 18300 115 5 -4.5 2.1 | 148 11 -5.7 9.2 13 50 20480 75 5 -4.8 -1.3 | 134 8 -6.0 5.8 14 30 23800 40 5 -3.2 -3.8 | 126 5 -4.4 3.3 15 20 26460 145 5 -2.9 4.1 | 160 12 -4.1 11.2 16 10 31050 70 7 -6.6 -2.4 | 121 9 -7.8 4.7 Wind Parameters Mean winds (0-6000m): 320.5 at 9.6 knts Storm direction: 350.5 at 7.2 knts Shear (0-3000m) pos: 0.4 neg: 1.2 tot: 1.6 10-3/s Storm rel Dir Shear (0-3000m): 67.5 deg Storm rel helicity (0-3000m) pos: 8.9 neg: -11.8 tot: -2.9 m^2/s^2 ave: -1.0 10^-3 m/s^2 rel: -0.07 Storm rel vorticity (0-3000m) horiz: 3.9 stream: -0.3 10^-3/s Energy-Hel index: 0.00 Bulk Rich Number: 1.42 Bulk Shear: 11.75 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 35 4 134 5| 0.0 5.0 5.0| 0.0 -6.6 -6.6 -13.2 -0.93| 5.0 -4.7 1000 28 5 121 4| 0.0 3.0 3.0| 0.1 -8.3 -8.2 -8.2 -0.63| 4.7 -2.9 1500 15 6 120 3| 0.0 2.0 2.0| 0.9 -8.3 -7.4 -5.0 -0.23| 4.7 -1.1 2000 6 6 128 2| 0.0 1.5 1.5| 0.9 -10.0 -9.1 -4.6 -0.24| 4.6 -1.1 2500 355 6 156 2| 0.0 1.4 1.4| 3.4 -11.8 -8.4 -3.4 -0.20| 4.2 -0.8 3000 332 6 220 2| 0.4 1.2 1.6| 8.9 -11.8 -2.9 -1.0 -0.07| 3.9 -0.3 4000 315 7 240 4| 1.0 0.9 1.9| 21.7 -11.8 10.0 2.5 0.14| 3.7 0.5 5000 320 8 261 4| 1.2 0.7 1.9| 33.6 -11.8 21.9 4.4 0.27| 3.4 0.9 6000 321 10 274 5| 1.1 0.6 1.6| 35.5 -11.8 23.8 4.0 0.28| 2.9 0.8 Wrote GIF file: /home/apache/climate/data/raob//U4688/skewt/U4688.skewt.20250426.12.gif