UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025121812.upa.cvt Date: 1200Z 18 DEC 25 Searching for U9839... Searching the city database file for: U9839 ... Date:1200Z 18 DEC 25 Station: U9839 WMO ident: 29839 Latitude: 53.50 Longitude: 83.83 ------------------------------------------------------------------------------- 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 ------------------------------------------------------------------------------- SFC 1008 149 -14.7 -18.7 72 4.0 -15.4 220 3 257.9 258.0 257.2 260.2 0.87 1 1000 209 -15.5 -19.0 74 3.5 -16.1 220 7 257.6 257.8 257.1 260.0 0.85 2 925 795 -17.9 -20.7 79 2.8 -18.3 245 23 261.0 261.1 259.6 263.2 0.79 3 880 1167 -19.7 -22.8 76 3.1 -20.1 245 25 262.9 263.0 260.9 264.8 0.69 4 850 1425 -19.3 -22.0 79 2.7 -19.7 245 27 265.9 266.1 263.3 268.1 0.77 5 775 2112 -19.1 -21.4 82 2.3 -19.5 250 29 273.3 273.4 268.5 275.8 0.89 6 704 2821 -22.5 -24.3 85 1.8 -22.8 255 31 277.1 277.2 270.8 279.4 0.76 7 700 2863 -22.3 -24.0 86 1.7 -22.6 255 31 277.8 277.9 271.2 280.1 0.78 8 663 3262 -22.7 -24.2 88 1.5 -22.9 254 32 281.7 281.8 273.5 284.1 0.81 9 660 3295 -22.7 -26.4 72 3.7 -23.2 254 32 282.1 282.2 273.5 284.1 0.67 10 549 4624 -31.5 -34.6 74 3.1 -31.8 251 34 286.9 286.9 275.6 288.0 0.37 11 500 5280 -35.7 -39.9 65 4.2 -36.0 250 35 289.5 289.6 276.8 290.3 0.24 12 400 6790 -46.7 -52.7 50 6.0 -46.9 255 35 294.3 294.3 278.9 294.6 0.07 13 385 7042 -47.9 -53.9 50 6.0 -48.1 256 35 296.0 296.0 279.6 296.2 0.06 14 320 8233 -57.9 -63.9 46 6.0 -58.0 263 35 298.2 298.2 280.6 298.3 0.02 15 300 8640 -57.7 -63.7 46 6.0 -57.8 265 35 304.0 304.0 283.0 304.1 0.02 16 278 9122 -56.7 -63.7 41 7.0 -56.8 312.1 312.2 286.1 312.2 0.03 TRP WND Sounding variables and indices 1000-500 mb thick: 5071.00 m Freezing level: Surface below freezing Wetbulb zero: Below ground Precipitable water: 0.15 inches Sfc-500 mean rel hum: 77.13 % Est. max temperature: -7.44 C = 18.60 F Sfc-Lift cond lev (LCL): 944.45 mb = 638.56 m = 2094.98 ft T: -17.26 C 700-500 lapse rate: 5.54 C/km ThetaE index: 0.25 C Layer 1000.0- 925.0 mb Conv cond level (CCL): 633.23 mb = 3594.06 m = 11791.40 ft Mean mixing ratio: 0.82 g/kg Conv temperature: 10.66 C = 51.18 F Cap Strength: 21.27 C Lifted Index: 22.82 C Risk: None Lifted Index @300 mb: 29.94 C Lifted Index @700 mb: 15.00 C Showalter Index: 17.72 C Risk: None Total Totals Index: 30.10 C Risk: None Vertical Totals Index: 16.40 C Cross Totals Index: 13.70 C K Index: -7.30 Risk: None Sweat Index: 124.89 Risk: None Energy Index: 4.74 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 9.87 J/kg Max Up Vert Vel: 4.44 m/s Conv Inhibition (B-): 7015.82 J/kg Cap Strength: 22.53 C Lift Cond Lev (LCL): 908.64 mb = 928.08 m = 3044.83 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 280 at 22 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 1008 149 220 3 1.9 2.3 | 108 21 -19.9 6.3 1 1000 209 220 7 4.5 5.4 | 118 20 -17.3 9.4 2 925 795 245 23 20.8 9.7 | 176 14 -1.0 13.7 3 850 1425 245 27 24.5 11.4 | 190 16 2.7 15.4 4 700 2863 255 31 29.9 8.0 | 214 15 8.1 12.0 5 500 5280 250 35 32.9 12.0 | 215 19 11.1 16.0 6 400 6790 255 35 33.8 9.1 | 223 18 12.0 13.1 7 300 8640 265 35 34.9 3.1 | 242 15 13.1 7.1 Wind Parameters Mean winds (0-6000m): 250.4 at 29.6 knts Storm direction: 280.4 at 22.2 knts Shear (0-3000m) pos: 5.0 neg: 0.0 tot: 5.0 10-3/s Storm rel Dir Shear (0-3000m): 106.7 deg Storm rel helicity (0-3000m) pos: 129.9 neg: 0.0 tot: 129.9 m^2/s^2 ave: 43.3 10^-3 m/s^2 rel: 0.93 Storm rel vorticity (0-3000m) horiz: 5.5 stream: 5.2 10^-3/s Energy-Hel index: 0.01 Bulk Rich Number: 0.22 Bulk Shear: 44.91 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 ------------------------------------------------------------------------------- 500 233 12 133 17| 16.7 0.0 16.7| 74.0 0.0 74.0 148.1 0.94| 17.3 16.2 1000 242 18 153 14| 11.6 0.0 11.6| 98.5 0.0 98.5 98.5 0.94| 12.1 11.4 1500 243 21 166 14| 8.6 0.0 8.6|108.3 0.0 108.3 72.2 0.94| 9.0 8.4 2000 245 22 174 14| 6.8 0.0 6.8|117.0 0.0 117.0 58.5 0.94| 7.3 6.9 2500 247 24 181 14| 5.8 0.0 5.8|125.8 0.0 125.8 50.3 0.94| 6.3 6.0 3000 248 25 187 13| 5.0 0.0 5.0|129.9 0.0 129.9 43.3 0.93| 5.5 5.2 4000 250 27 194 14| 3.7 0.3 4.0|130.4 0.0 130.4 32.6 0.88| 4.4 3.9 5000 250 28 200 15| 3.0 0.4 3.4|130.5 -0.1 130.4 26.1 0.83| 3.7 3.1 6000 250 30 203 15| 2.5 0.3 2.9|137.7 -0.1 137.6 22.9 0.83| 3.3 2.7 Wrote GIF file: /home/apache/climate/data/raob//U9839/skewt/U9839.skewt.20251218.12.gif