UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025121012.upa.cvt Date: 1200Z 10 DEC 25 Searching for U4688... Searching the city database file for: U4688 ... Date:1200Z 10 DEC 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 115 1 925 670 45 1 SFC 916 739 -32.5 -35.0 78 2.5 -32.6 45 1 246.8 246.8 246.2 247.4 0.21 3 895 903 -32.9 -36.4 71 3.5 -33.1 19 4 248.0 248.0 247.3 248.5 0.19 4 850 1271 -28.1 -31.8 71 3.7 -28.4 320 11 256.7 256.8 255.1 257.6 0.31 5 772 1969 -19.1 -22.6 74 3.5 -19.7 5 10 273.6 273.7 268.6 275.9 0.81 6 710 2582 -23.9 -27.1 75 3.2 -24.3 43 9 274.9 275.0 269.1 276.6 0.58 7 700 2685 -24.3 -27.5 75 3.2 -24.7 50 9 275.6 275.7 269.5 277.3 0.57 8 681 2887 -23.1 -26.3 75 3.2 -23.6 53 10 279.1 279.2 271.8 281.1 0.66 9 548 4451 -33.1 -36.2 74 3.1 -33.4 75 16 285.1 285.2 274.6 286.1 0.32 10 500 5090 -38.3 -41.4 73 3.1 -38.5 85 19 286.3 286.4 275.1 287.0 0.20 11 439 5974 -44.3 -47.5 70 3.2 -44.4 111 20 289.6 289.6 276.7 290.0 0.12 12 400 6590 -49.5 -52.7 69 3.2 -49.6 130 21 290.7 290.7 277.1 290.9 0.07 13 340 7632 -58.9 -62.2 65 3.3 -58.9 124 25 291.7 291.7 277.6 291.8 0.03 14 303 8349 -62.9 -66.1 65 3.2 -62.9 120 27 295.8 295.8 279.5 295.9 0.02 15 300 8410 -62.7 -65.9 65 3.2 -62.7 120 27 297.0 297.0 280.0 297.0 0.02 16 295 8513 -62.7 -65.9 65 3.2 -62.7 122 27 298.4 298.4 280.7 298.5 0.02 17 250 9540 -59.3 -62.8 64 3.5 -59.3 140 31 317.9 317.9 288.1 318.0 0.03 18 200 10960 -53.7 -57.3 65 3.6 -53.8 165 35 347.7 347.7 296.2 348.1 0.08 19 176 11784 -51.5 -54.9 67 3.4 -51.7 169 35 364.3 364.3 299.6 364.9 0.13 20 150 12820 -51.5 -55.0 66 3.5 -51.7 175 35 381.3 381.4 302.6 382.0 0.15 21 101 15386 -52.1 -55.7 65 3.6 -52.4 185 46 425.8 425.9 308.5 426.9 0.20 22 100 15450 -52.3 -56.0 64 3.7 -52.5 185 46 426.7 426.7 308.6 427.7 0.19 23 76 17217 -54.3 -58.2 62 3.9 -54.6 457.3 457.4 311.6 458.4 0.19 TRP 303 8349 -62.9 -66.1 65 3.2 -62.9 120 27 295.8 295.8 279.5 295.9 0.02 WND Sounding variables and indices 1000-500 mb thick: 4975.00 m Freezing level: Surface below freezing Wetbulb zero: Below ground Precipitable water: 0.10 inches Sfc-500 mean rel hum: 73.53 % Est. max temperature: -6.24 C = 20.77 F Sfc-Lift cond lev (LCL): 877.80 mb = 1041.49 m = 3416.92 ft T: -31.09 C 700-500 lapse rate: 5.82 C/km ThetaE index: 0.00 C Layer 916.0- 0.0 mb Conv cond level (CCL): 916.00 mb = 739.17 m = 2425.07 ft Mean mixing ratio: 0.29 g/kg Conv temperature: -31.78 C = -25.20 F Cap Strength: 25.47 C Lifted Index: 25.78 C Risk: None Lifted Index @300 mb: 29.74 C Lifted Index @700 mb: 18.92 C Showalter Index: 23.61 C Risk: None Total Totals Index: 16.70 C Risk: None Vertical Totals Index: 10.20 C Cross Totals Index: 6.50 C K Index: -24.80 Risk: None Sweat Index: 41.00 Risk: None Energy Index: 6.40 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 69.92 J/kg Max Up Vert Vel: 11.83 m/s Conv Inhibition (B-): 32218.71 J/kg Cap Strength: 25.75 C Lift Cond Lev (LCL): 821.76 mb = 1516.12 m = 4974.07 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 111 at 11 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 ---------------------------------------------------------- 0 916 739 45 1 -0.7 -0.7 | 296 10 9.2 -4.4 1 850 1271 320 11 7.1 -8.4 | 306 21 17.0 -12.2 2 700 2685 50 9 -6.9 -5.8 | 342 10 3.0 -9.5 3 500 5090 85 19 -18.9 -1.7 | 59 11 -9.0 -5.4 4 400 6590 130 21 -16.1 13.5 | 148 12 -6.2 9.8 5 303 8349 120 27 -23.4 13.5 | 126 17 -13.5 9.8 6 300 8410 120 27 -23.4 13.5 | 126 17 -13.5 9.8 7 250 9540 140 31 -19.9 23.7 | 153 22 -10.0 20.0 8 200 10960 165 35 -9.1 33.8 | 182 30 0.9 30.1 9 150 12820 175 35 -3.1 34.9 | 192 32 6.9 31.1 10 100 15450 185 46 4.0 45.8 | 198 44 13.9 42.1 Wind Parameters Mean winds (0-6000m): 80.7 at 14.1 knts Storm direction: 110.7 at 10.6 knts Shear (0-3000m) pos: 3.1 neg: 1.8 tot: 4.9 10-3/s Storm rel Dir Shear (0-3000m): 77.8 deg Storm rel helicity (0-3000m) pos: 69.0 neg: -11.2 tot: 57.9 m^2/s^2 ave: 19.3 10^-3 m/s^2 rel: 0.50 Storm rel vorticity (0-3000m) horiz: 5.7 stream: 2.8 10^-3/s Energy-Hel index: 0.02 Bulk Rich Number: 1.76 Bulk Shear: 39.77 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 ------------------------------------------------------------------------------- 500 325 6 303 16| 0.0 10.6 10.6| 11.0 -11.2 -0.2 -0.3 0.11| 12.9 1.4 1000 331 8 308 18| 2.3 5.3 7.6| 32.2 -11.2 21.1 21.1 0.31| 9.2 2.8 1500 342 9 314 17| 3.3 3.5 6.8| 49.0 -11.2 37.8 25.2 0.40| 8.0 3.2 2000 353 9 319 17| 3.4 2.6 6.1| 56.0 -11.2 44.9 22.4 0.41| 7.3 3.0 2500 8 9 326 15| 3.2 2.1 5.4| 62.4 -11.2 51.3 20.5 0.46| 6.3 2.9 3000 22 10 334 14| 3.1 1.8 4.9| 69.0 -11.2 57.9 19.3 0.50| 5.7 2.8 4000 47 11 351 12| 3.1 1.3 4.4| 83.7 -11.2 72.5 18.1 0.57| 5.0 2.9 5000 64 13 9 9| 2.9 1.1 4.0|106.3 -11.2 95.2 19.0 0.65| 4.9 3.2 6000 81 14 34 7| 2.7 0.9 3.6|129.6 -12.1 117.5 19.6 0.69| 4.9 3.4 Wrote GIF file: /home/apache/climate/data/raob//U4688/skewt/U4688.skewt.20251210.12.gif