UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025120500.upa.cvt Date: 0000Z 5 DEC 25 Searching for U4688... Searching the city database file for: U4688 ... Date:0000Z 5 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 -21 1 925 542 SFC 899 743 -29.1 -31.7 78 2.6 -29.3 30 1 251.6 251.6 250.7 252.4 0.30 3 887 837 -30.3 -33.8 71 3.5 -30.5 17 3 251.3 251.4 250.4 252.0 0.25 4 850 1139 -25.3 -28.8 73 3.5 -25.6 335 11 259.6 259.7 257.8 260.8 0.42 5 806 1531 -18.5 -21.8 75 3.3 -19.1 13 15 270.9 271.0 266.8 273.2 0.83 6 702 2561 -19.1 -22.2 76 3.1 -19.7 113 25 281.1 281.3 273.3 283.8 0.92 7 700 2582 -19.3 -22.4 76 3.1 -19.8 115 25 281.1 281.3 273.3 283.8 0.90 8 576 4007 -27.3 -30.3 76 3.0 -27.7 127 27 287.9 288.0 276.4 289.6 0.53 9 500 5020 -29.7 -33.0 73 3.3 -30.1 135 29 296.8 296.9 280.6 298.4 0.47 10 480 5310 -31.5 -34.6 74 3.1 -31.9 139 32 298.1 298.2 281.1 299.5 0.42 11 468 5490 -30.1 -33.4 73 3.3 -30.5 141 35 302.0 302.1 282.8 303.6 0.49 12 400 6590 -38.5 -41.7 72 3.2 -38.7 155 48 305.0 305.0 283.7 305.8 0.25 13 317 8151 -49.8 -53.0 69 3.2 -49.9 145 93 310.2 310.3 285.5 310.6 0.09 14 306 8381 -51.5 -54.7 68 3.2 -51.6 145 92 311.0 311.0 285.8 311.3 0.07 15 300 8510 -50.7 -54.1 67 3.4 -50.8 145 91 313.9 313.9 286.8 314.2 0.08 16 292 8686 -50.9 -54.2 68 3.3 -51.0 146 90 316.0 316.1 287.5 316.4 0.08 17 272 9143 -54.5 -58.0 65 3.5 -54.6 150 86 317.3 317.3 287.9 317.5 0.06 18 250 9680 -56.3 -59.6 66 3.3 -56.3 155 81 322.4 322.4 289.5 322.6 0.05 19 226 10318 -59.1 -62.7 63 3.6 -59.2 150 77 327.5 327.5 291.0 327.7 0.04 20 200 11090 -56.7 -60.1 65 3.4 -56.8 160 66 343.0 343.0 295.1 343.2 0.06 21 197 11185 -56.5 -59.9 65 3.4 -56.6 160 65 344.8 344.8 295.5 345.0 0.06 22 180 11751 -58.7 -62.4 62 3.7 -58.7 160 62 350.2 350.2 296.7 350.4 0.05 23 170 12110 -56.3 -59.8 65 3.5 -56.4 160 59 360.0 360.0 298.8 360.3 0.07 24 150 12900 -56.9 -60.5 64 3.6 -57.0 160 54 372.0 372.1 301.0 372.4 0.07 25 100 15460 -57.3 -61.1 62 3.8 -57.5 185 54 417.0 417.0 307.4 417.5 0.10 26 79 16949 -56.3 -60.0 63 3.7 -56.5 192 58 448.2 448.2 310.8 449.0 0.15 27 70 17710 -58.9 -62.9 60 4.0 -59.1 195 60 458.4 458.4 311.7 459.0 0.12 28 69 17800 -59.1 -63.0 60 3.9 -59.3 195 60 459.8 459.9 311.8 460.5 0.12 29 50 19830 -56.5 -60.3 62 3.8 -56.8 200 62 510.3 510.4 315.8 511.8 0.23 30 43 20789 -55.3 -59.2 62 3.9 -55.7 201 69 535.8 535.9 317.4 537.8 0.30 31 37 21743 -57.5 -61.5 60 4.0 -57.9 203 77 553.7 553.7 318.4 555.5 0.26 32 35 22097 -54.3 -58.6 59 4.3 -54.9 203 79 570.9 571.0 319.3 573.7 0.40 33 30 23090 -51.9 -56.6 57 4.7 -52.8 205 87 603.2 603.4 320.9 607.6 0.60 34 26 24020 -50.5 -55.5 55 5.0 -51.7 205 92 632.3 632.6 322.2 638.5 0.79 35 22 25099 -54.5 -60.5 47 6.0 -55.6 205 98 651.4 651.6 322.9 655.4 0.50 36 20 25710 -54.1 -61.1 42 7.0 -55.5 205 101 670.6 670.8 323.6 674.8 0.51 37 15 27571 -50.5 -59.5 34 9.0 -53.1 740.0 740.4 325.8 747.7 0.84 TRP 226 10318 -59.1 -62.7 63 3.6 -59.2 150 77 327.5 327.5 291.0 327.7 0.04 WND 317 8151 -49.8 -53.0 69 3.2 -49.9 145 93 310.2 310.3 285.5 310.6 0.09 Sounding variables and indices 1000-500 mb thick: 5041.00 m Freezing level: Surface below freezing Wetbulb zero: Below ground Precipitable water: 0.14 inches Sfc-500 mean rel hum: 75.02 % Est. max temperature: -5.19 C = 22.66 F Sfc-Lift cond lev (LCL): 860.39 mb = 1052.94 m = 3454.49 ft T: -26.73 C 700-500 lapse rate: 4.27 C/km ThetaE index: 0.41 C Layer 887.0- 850.0 mb Conv cond level (CCL): 899.00 mb = 742.74 m = 2436.79 ft Mean mixing ratio: 0.49 g/kg Conv temperature: -26.37 C = -15.46 F Cap Strength: 22.31 C Lifted Index: 28.64 C Risk: None Lifted Index @300 mb: 36.79 C Lifted Index @700 mb: 17.89 C Showalter Index: 29.58 C Risk: None Total Totals Index: 5.30 C Risk: None Vertical Totals Index: 4.40 C Cross Totals Index: 0.90 C K Index: -27.50 Risk: None Sweat Index: 51.00 Risk: None Energy Index: 8.03 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 92.96 J/kg Max Up Vert Vel: 13.64 m/s Conv Inhibition (B-): 59845.89 J/kg Cap Strength: 28.31 C Lift Cond Lev (LCL): 814.22 mb = 1455.83 m = 4776.29 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 163 at 20 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 ---------------------------------------------------------- 0 899 743 30 1 -0.5 -0.9 | 345 21 5.4 -20.4 1 850 1139 335 11 4.6 -10.0 | 340 31 10.5 -29.5 2 700 2582 115 25 -22.7 10.6 | 62 19 -16.8 -8.9 3 500 5020 135 29 -20.5 20.5 | 94 15 -14.6 1.0 4 400 6590 155 48 -20.3 43.5 | 149 28 -14.4 24.0 5 317 8151 145 93 -53.3 76.2 | 140 74 -47.5 56.7 6 300 8510 145 91 -52.2 74.5 | 140 72 -46.3 55.1 7 250 9680 155 81 -34.2 73.4 | 152 61 -28.4 53.9 8 226 10318 150 77 -38.5 66.7 | 145 57 -32.6 47.2 9 200 11090 160 66 -22.6 62.0 | 159 46 -16.7 42.5 10 150 12900 160 54 -18.5 50.7 | 158 34 -12.6 31.3 11 100 15460 185 54 4.7 53.8 | 197 36 10.6 34.3 12 70 17710 195 60 15.5 58.0 | 209 44 21.4 38.5 13 50 19830 200 62 21.2 58.3 | 215 47 27.1 38.8 14 30 23090 205 87 36.8 78.8 | 216 73 42.6 59.4 15 20 25710 205 101 42.7 91.5 | 214 87 48.6 72.0 Wind Parameters Mean winds (0-6000m): 133.2 at 27.1 knts Storm direction: 163.2 at 20.4 knts Shear (0-3000m) pos: 6.3 neg: 1.9 tot: 8.3 10-3/s Storm rel Dir Shear (0-3000m): 90.2 deg Storm rel helicity (0-3000m) pos: 353.2 neg: -28.7 tot: 324.5 m^2/s^2 ave: 108.2 10^-3 m/s^2 rel: 0.69 Storm rel vorticity (0-3000m) horiz: 10.7 stream: 7.4 10^-3/s Energy-Hel index: 0.20 Bulk Rich Number: 0.62 Bulk Shear: 149.23 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 ------------------------------------------------------------------------------- 500 339 7 342 27| 0.0 11.6 11.6| 22.3 -28.7 -6.4 -12.9 -0.06| 14.3 -0.8 1000 3 11 350 31| 6.5 5.8 12.3|136.9 -28.7 108.2 108.2 0.45| 13.9 6.2 1500 42 13 6 30| 8.9 3.9 12.8|265.8 -28.7 237.1 158.1 0.63| 15.1 9.5 2000 89 16 27 22| 8.8 2.9 11.8|336.2 -28.7 307.5 153.7 0.67| 15.0 10.1 2500 102 18 36 20| 7.3 2.3 9.7|344.7 -28.7 316.0 126.4 0.68| 12.4 8.5 3000 108 19 43 18| 6.3 1.9 8.3|353.2 -28.7 324.5 108.2 0.69| 10.7 7.4 4000 117 21 54 16| 5.0 1.5 6.5|369.7 -28.7 341.0 85.3 0.70| 8.6 6.0 5000 124 24 66 15| 5.1 1.2 6.2|414.3 -28.7 385.6 77.1 0.73| 8.1 5.9 6000 133 27 86 14| 5.5 1.0 6.5|476.3 -31.0 445.3 74.2 0.70| 8.2 5.7 Wrote GIF file: /home/apache/climate/data/raob//U4688/skewt/U4688.skewt.20251205.00.gif