UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025120312.upa.cvt Date: 1200Z 3 DEC 25 Searching for U4688... Searching the city database file for: U4688 ... Date:1200Z 3 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 175 1 925 725 60 1 SFC 923 740 -34.5 -37.3 76 2.8 -34.6 60 1 244.2 244.2 243.8 244.6 0.17 3 850 1334 -21.9 -25.3 74 3.4 -22.4 170 13 263.2 263.3 260.9 264.8 0.57 4 843 1395 -20.7 -24.2 73 3.5 -21.2 170 13 265.1 265.2 262.4 266.9 0.64 5 816 1637 -17.1 -20.5 75 3.4 -17.7 168 12 271.4 271.5 267.4 274.0 0.92 6 792 1860 -17.7 -20.9 76 3.2 -18.3 166 12 273.1 273.2 268.5 275.7 0.91 7 700 2769 -25.1 -28.2 75 3.1 -25.5 160 9 274.7 274.8 268.8 276.3 0.54 8 578 4127 -36.3 -39.2 74 2.9 -36.5 188 17 277.1 277.1 269.8 277.7 0.22 9 523 4815 -39.7 -42.8 72 3.1 -39.9 203 21 281.0 281.0 272.1 281.5 0.17 10 500 5120 -42.3 -45.1 74 2.8 -42.4 210 23 281.5 281.5 272.3 281.9 0.14 11 400 6590 -52.9 -55.9 70 3.0 -52.9 205 35 286.2 286.2 274.8 286.4 0.05 12 379 6936 -55.5 -58.7 67 3.2 -55.5 204 35 287.3 287.3 275.3 287.4 0.04 13 357 7317 -55.3 -58.5 67 3.2 -55.4 203 34 292.5 292.5 278.0 292.6 0.04 14 300 8410 -62.1 -65.1 67 3.0 -62.1 200 33 297.8 297.8 280.4 297.9 0.02 15 285 8728 -63.1 -66.3 65 3.2 -63.1 200 31 300.8 300.8 281.7 300.8 0.02 16 265 9183 -58.7 -62.1 65 3.4 -58.7 197 28 313.5 313.5 286.6 313.7 0.03 17 250 9550 -59.3 -62.7 65 3.4 -59.3 195 25 317.9 317.9 288.1 318.0 0.03 18 200 10950 -57.7 -61.0 66 3.3 -57.8 180 21 341.4 341.4 294.7 341.6 0.05 19 150 12760 -57.7 -61.1 65 3.4 -57.8 195 31 370.7 370.7 300.7 371.0 0.07 20 147 12887 -56.9 -60.2 66 3.3 -57.0 195 31 374.2 374.2 301.4 374.6 0.08 21 102 15177 -60.5 -64.0 63 3.5 -60.6 185 33 408.5 408.5 306.3 408.9 0.07 22 100 15300 -60.1 -63.7 63 3.6 -60.2 185 33 411.6 411.6 306.7 412.0 0.07 23 70 17520 -60.5 -64.1 62 3.6 -60.6 200 50 455.0 455.0 311.4 455.5 0.10 24 59 18586 -60.3 -64.0 62 3.7 -60.5 195 52 478.2 478.2 313.4 478.9 0.12 25 52 19381 -56.5 -60.0 65 3.5 -56.8 191 54 504.6 504.7 315.4 506.1 0.23 26 50 19630 -56.7 -60.2 64 3.5 -57.0 190 54 509.9 509.9 315.7 511.3 0.23 27 40 21048 -55.1 -58.9 63 3.8 -55.6 190 66 547.5 547.6 318.1 549.8 0.34 28 32 22494 -48.3 -52.2 64 3.9 -49.3 190 77 601.8 602.2 321.0 608.8 0.96 29 31 22703 -47.3 -51.2 64 3.9 -48.4 188 68 609.9 610.4 321.4 618.1 1.11 30 30 22920 -47.5 -51.4 64 3.9 -48.6 185 58 615.1 615.6 321.6 623.5 1.12 31 29 23143 -48.7 -52.7 63 4.0 -49.7 617.8 618.2 321.7 625.3 1.00 TRP 285 8728 -63.1 -66.3 65 3.2 -63.1 200 31 300.8 300.8 281.7 300.8 0.02 WND 32 22494 -48.3 -52.2 64 3.9 -49.3 190 77 601.8 602.2 321.0 608.8 0.96 Sounding variables and indices 1000-500 mb thick: 4945.00 m Freezing level: Surface below freezing Wetbulb zero: Below ground Precipitable water: 0.10 inches Sfc-500 mean rel hum: 74.61 % Est. max temperature: -5.94 C = 21.31 F Sfc-Lift cond lev (LCL): 879.71 mb = 1086.37 m = 3564.18 ft T: -27.15 C 700-500 lapse rate: 7.32 C/km ThetaE index: 0.00 C Layer 923.0--21495.8 mb Conv cond level (CCL): 923.00 mb = 740.20 m = 2428.46 ft Mean mixing ratio: 0.46 g/kg Conv temperature: -26.72 C = -16.10 F Cap Strength: 18.67 C Lifted Index: 18.79 C Risk: None Lifted Index @300 mb: 27.76 C Lifted Index @700 mb: 14.96 C Showalter Index: 13.75 C Risk: None Total Totals Index: 37.40 C Risk: None Vertical Totals Index: 20.40 C Cross Totals Index: 17.00 C K Index: -8.00 Risk: None Sweat Index: 49.00 Risk: None Energy Index: 3.68 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 85.74 J/kg Max Up Vert Vel: 13.10 m/s Conv Inhibition (B-): 45795.58 J/kg Cap Strength: 18.74 C Lift Cond Lev (LCL): 848.70 mb = 1345.23 m = 4413.44 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 226 at 13 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 ---------------------------------------------------------- 0 923 740 60 1 -0.9 -0.5 | 47 14 -10.5 -9.8 1 850 1334 170 13 -2.3 12.8 | 107 12 -11.9 3.5 2 700 2769 160 9 -3.1 8.5 | 86 13 -12.7 -0.8 3 500 5120 210 23 11.5 19.9 | 190 11 1.8 10.7 4 400 6590 205 35 14.8 31.7 | 193 23 5.1 22.5 5 300 8410 200 33 11.3 31.0 | 184 22 1.6 21.8 6 285 8728 200 31 10.6 29.1 | 183 20 0.9 19.9 7 250 9550 195 25 6.5 24.1 | 168 15 -3.2 14.9 8 200 10950 180 21 0.0 21.0 | 141 15 -9.7 11.7 9 150 12760 195 31 8.0 29.9 | 175 21 -1.6 20.7 10 100 15300 185 33 2.9 32.9 | 164 25 -6.8 23.6 11 70 17520 200 50 17.1 47.0 | 191 38 7.4 37.7 12 50 19630 190 54 9.4 53.2 | 180 44 -0.3 43.9 13 32 22494 190 77 13.4 75.8 | 183 67 3.7 66.6 14 30 22920 185 58 5.1 57.8 | 175 49 -4.6 48.5 Wind Parameters Mean winds (0-6000m): 196.2 at 17.8 knts Storm direction: 226.2 at 13.4 knts Shear (0-3000m) pos: 3.1 neg: 0.5 tot: 3.7 10-3/s Storm rel Dir Shear (0-3000m): 73.0 deg Storm rel helicity (0-3000m) pos: 88.8 neg: -14.4 tot: 74.4 m^2/s^2 ave: 24.8 10^-3 m/s^2 rel: 0.63 Storm rel vorticity (0-3000m) horiz: 5.1 stream: 3.2 10^-3/s Energy-Hel index: 0.04 Bulk Rich Number: 3.89 Bulk Shear: 22.05 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 ------------------------------------------------------------------------------- 500 167 6 73 11| 11.5 0.0 11.5| 55.3 0.0 55.3 110.6 0.89| 14.8 13.2 1000 167 9 88 12| 6.3 0.0 6.3| 67.2 -4.2 63.0 63.0 0.76| 10.2 7.7 1500 167 10 91 12| 4.2 0.5 4.7| 67.2 -9.3 57.8 38.6 0.63| 7.3 4.6 2000 166 10 91 12| 3.1 0.8 3.9| 67.2 -14.4 52.8 26.4 0.52| 5.9 3.1 2500 166 10 92 12| 3.1 0.6 3.8| 77.5 -14.4 63.1 25.2 0.58| 5.4 3.1 3000 168 10 95 12| 3.1 0.5 3.7| 88.8 -14.4 74.4 24.8 0.63| 5.1 3.2 4000 180 12 108 10| 3.2 0.4 3.5|112.9 -14.4 98.5 24.6 0.71| 5.0 3.6 5000 191 15 128 9| 2.8 0.1 3.0|125.5 -14.4 111.1 22.2 0.67| 4.9 3.3 6000 196 18 149 9| 2.4 0.7 3.1|126.1 -16.4 109.7 18.3 0.58| 4.7 2.7 Wrote GIF file: /home/apache/climate/data/raob//U4688/skewt/U4688.skewt.20251203.12.gif