UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025120212.upa.cvt Date: 1200Z 2 DEC 25 Searching for U4688... Searching the city database file for: U4688 ... Date:1200Z 2 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 198 SFC 926 744 -33.7 -36.6 75 2.9 -33.8 160 1 244.8 244.8 244.3 245.3 0.18 2 925 752 -32.5 -36.2 70 3.7 -32.7 165 1 246.1 246.1 245.5 246.6 0.19 3 879 1115 -28.3 -32.2 69 3.9 -28.6 271 7 254.1 254.1 252.8 254.9 0.29 4 850 1358 -22.9 -26.5 72 3.6 -23.3 340 11 262.2 262.2 259.9 263.6 0.52 5 813 1687 -17.3 -20.5 76 3.2 -17.9 16 13 271.5 271.6 267.4 274.1 0.92 6 776 2037 -14.7 -17.8 77 3.1 -15.4 53 16 277.9 278.1 272.0 281.4 1.21 7 700 2809 -19.1 -22.0 78 2.9 -19.6 135 21 281.3 281.5 273.5 284.1 0.94 8 500 5230 -35.1 -38.1 74 3.0 -35.3 145 29 290.2 290.3 277.3 291.2 0.29 9 442 6084 -40.1 -43.2 72 3.1 -40.3 148 32 294.3 294.4 279.1 295.0 0.19 10 400 6760 -46.1 -49.1 71 3.0 -46.2 150 35 295.1 295.1 279.3 295.5 0.11 11 307 8458 -61.9 -64.8 68 2.9 -61.9 159 56 296.1 296.1 279.6 296.2 0.02 12 300 8600 -62.5 -65.5 67 3.0 -62.5 160 58 297.2 297.2 280.1 297.3 0.02 13 291 8788 -63.6 -66.6 67 3.0 -63.6 160 60 298.3 298.3 280.6 298.4 0.02 14 266 9335 -66.7 -69.7 66 3.0 -66.7 155 50 301.5 301.5 282.0 301.6 0.01 15 250 9710 -66.9 -69.9 66 3.0 -66.9 155 44 306.6 306.6 284.1 306.7 0.01 16 231 10186 -67.7 -70.9 64 3.2 -67.7 155 47 312.4 312.4 286.2 312.4 0.01 17 200 11060 -63.7 -67.1 63 3.4 -63.7 155 52 331.9 331.9 292.3 332.0 0.02 18 187 11475 -60.7 -64.1 64 3.4 -60.7 343.2 343.2 295.1 343.3 0.04 TRP 266 9335 -66.7 -69.7 66 3.0 -66.7 155 50 301.5 301.5 282.0 301.6 0.01 WND 291 8788 -63.6 -66.6 67 3.0 -63.6 160 60 298.3 298.3 280.6 298.4 0.02 Sounding variables and indices 1000-500 mb thick: 5032.00 m Freezing level: Surface below freezing Wetbulb zero: Below ground Precipitable water: 0.13 inches Sfc-500 mean rel hum: 75.26 % Est. max temperature: -1.30 C = 29.66 F Sfc-Lift cond lev (LCL): 881.16 mb = 1097.30 m = 3600.02 ft T: -28.50 C 700-500 lapse rate: 6.61 C/km ThetaE index: 0.00 C Layer 926.0-2035380315314230741112602740391936.0 mb Conv cond level (CCL): 926.00 mb = 744.31 m = 2441.92 ft Mean mixing ratio: 0.39 g/kg Conv temperature: -28.70 C = -19.67 F Cap Strength: 22.13 C Lifted Index: 27.11 C Risk: None Lifted Index @300 mb: 28.36 C Lifted Index @700 mb: 22.13 C Showalter Index: 21.95 C Risk: None Total Totals Index: 20.80 C Risk: None Vertical Totals Index: 12.20 C Cross Totals Index: 8.60 C K Index: -17.20 Risk: None Sweat Index: 51.00 Risk: None Energy Index: 5.97 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 90.36 J/kg Max Up Vert Vel: 13.44 m/s Conv Inhibition (B-): 11952.79 J/kg Cap Strength: 26.97 C Lift Cond Lev (LCL): 836.03 mb = 1480.54 m = 4857.34 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 171 at 17 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 ---------------------------------------------------------- 0 926 744 160 1 -0.3 0.9 | 352 16 2.2 -16.0 1 925 752 165 1 -0.3 1.0 | 352 16 2.3 -15.9 2 850 1358 340 11 3.8 -10.3 | 347 28 6.3 -27.2 3 700 2809 135 21 -14.8 14.8 | 80 12 -12.3 -2.1 4 500 5230 145 29 -16.6 23.8 | 116 16 -14.1 6.9 5 400 6760 150 35 -17.5 30.3 | 132 20 -14.9 13.4 6 300 8600 160 58 -19.8 54.5 | 155 41 -17.3 37.6 7 291 8788 160 60 -20.5 56.4 | 156 43 -18.0 39.5 8 266 9335 155 50 -21.1 45.3 | 147 34 -18.6 28.4 9 250 9710 155 44 -18.6 39.9 | 145 28 -16.0 23.0 10 200 11060 155 52 -22.0 47.1 | 147 36 -19.4 30.2 Wind Parameters Mean winds (0-6000m): 141.4 at 22.8 knts Storm direction: 171.4 at 17.1 knts Shear (0-3000m) pos: 4.0 neg: 0.0 tot: 4.0 10-3/s Storm rel Dir Shear (0-3000m): 103.3 deg Storm rel helicity (0-3000m) pos: 311.5 neg: -22.9 tot: 288.6 m^2/s^2 ave: 96.2 10^-3 m/s^2 rel: 0.63 Storm rel vorticity (0-3000m) horiz: 11.8 stream: 7.4 10^-3/s Energy-Hel index: 0.17 Bulk Rich Number: 0.90 Bulk Shear: 100.66 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 ------------------------------------------------------------------------------- 500 303 5 341 21| 10.3 0.0 10.3| 12.3 -22.9 -10.6 -21.2 -0.24| 15.6 -3.7 1000 353 8 352 25| 7.4 0.0 7.4|115.5 -22.9 92.6 92.6 0.34| 15.6 5.3 1500 25 11 4 27| 5.8 0.0 5.8|219.8 -22.9 196.9 131.3 0.54| 15.5 8.3 2000 80 13 27 22| 5.1 0.0 5.1|293.8 -22.9 270.9 135.5 0.60| 16.2 9.8 2500 117 14 44 15| 4.4 0.0 4.4|305.4 -22.9 282.5 113.0 0.62| 13.8 8.5 3000 126 16 53 13| 4.0 0.0 4.0|311.5 -22.9 288.6 96.2 0.63| 11.8 7.4 4000 134 18 69 11| 3.4 0.0 3.4|324.5 -22.9 301.6 75.4 0.64| 9.4 6.0 5000 138 21 82 11| 3.1 0.0 3.1|338.6 -22.9 315.7 63.1 0.65| 7.9 5.2 6000 141 23 94 12| 2.9 0.0 2.9|354.1 -22.9 331.2 55.2 0.66| 7.0 4.6 Wrote GIF file: /home/apache/climate/data/raob//U4688/skewt/U4688.skewt.20251202.12.gif