UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025121800.upa.cvt Date: 0000Z 18 DEC 25 Searching for LFBD... Searching the city database file for: LFBD ... Date:0000Z 18 DEC 25 Station: LFBD WMO ident: 7510 Latitude: 44.83 Longitude: -0.70 Elevation: 61.00 ------------------------------------------------------------------------------- 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 1015 61 9.6 9.3 98 0.3 9.5 145 13 281.5 282.8 281.9 301.4 7.25 1 1000 176 11.0 9.7 92 1.3 10.3 160 19 284.1 285.5 283.4 305.1 7.57 2 925 828 9.8 5.2 73 4.6 7.3 215 29 289.3 290.4 284.0 306.4 6.00 3 850 1524 5.8 -1.2 61 7.0 2.5 225 25 292.2 293.0 283.1 304.3 4.12 4 700 3082 -2.5 -16.5 33 14.0 -7.0 290 9 299.7 300.0 283.2 304.5 1.50 5 500 5680 -16.1 -17.7 87 1.6 -16.6 330 11 313.4 313.8 288.6 319.7 1.90 6 400 7330 -26.9 -41.9 23 15.0 -28.6 340 33 320.0 320.1 289.0 320.9 0.24 7 300 9330 -42.5 -54.5 26 12.0 -43.0 340 60 325.5 325.5 290.5 325.8 0.08 8 250 10540 -53.7 -57.8 61 4.1 -53.8 350 66 326.2 326.2 290.7 326.5 0.06 9 220 11345 -60.0 -64.0 59 4.0 -60.0 345 81 328.7 328.7 291.4 328.8 0.03 10 200 11930 -64.7 -68.6 58 3.9 -64.7 360 64 330.3 330.3 291.8 330.4 0.02 11 178 12633 -69.7 -74.2 52 4.5 -69.7 0 44 333.3 333.3 292.6 333.3 0.01 12 150 13670 -63.3 -75.3 18 12.0 -63.4 310 27 361.0 361.0 298.9 361.1 0.01 13 100 16150 -63.9 -85.9 3 22.0 -64.1 300 17 404.3 404.3 305.7 404.3 0.00 TRP 178 12633 -69.7 -74.2 52 4.5 -69.7 0 44 333.3 333.3 292.6 333.3 0.01 WND 220 11345 -60.0 -64.0 59 4.0 -60.0 345 81 328.7 328.7 291.4 328.8 0.03 Sounding variables and indices 1000-500 mb thick: 5504.00 m Freezing level: 745.18 mb = 2612.72 m = 8571.82 ft Wetbulb zero: 809.87 mb = 1912.06 m = 6273.08 ft Precipitable water: 0.75 inches Sfc-500 mean rel hum: 60.58 % Est. max temperature: 19.72 C = 67.50 F Sfc-Lift cond lev (LCL): 1010.43 mb = 95.85 m = 314.47 ft T: 10.02 C 700-500 lapse rate: 5.23 C/km ThetaE index: 2.15 C Layer 850.0- 700.0 mb Conv cond level (CCL): 847.36 mb = 1548.93 m = 5081.74 ft Mean mixing ratio: 6.78 g/kg Conv temperature: 20.44 C = 68.79 F Cap Strength: 3.93 C Lifted Index: 9.13 C Risk: None Lifted Index @300 mb: 14.32 C Lifted Index @700 mb: 3.93 C Showalter Index: 9.95 C Risk: None Total Totals Index: 36.80 C Risk: None Vertical Totals Index: 21.90 C Cross Totals Index: 14.90 C K Index: 6.70 Risk: None Sweat Index: 61.00 Risk: None Energy Index: 3.11 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 14.45 J/kg Max Up Vert Vel: 5.38 m/s Conv Inhibition (B-): 10371.20 J/kg Cap Strength: 9.00 C Lift Cond Lev (LCL): 924.13 mb = 835.78 m = 2742.04 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 281 at 12 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 1015 61 145 13 -7.5 10.6 | 125 23 -18.8 13.0 1 1000 176 160 19 -6.5 17.9 | 138 27 -17.9 20.2 2 925 828 215 29 16.6 23.8 | 191 27 5.3 26.1 3 850 1524 225 25 17.7 17.7 | 197 21 6.3 20.0 4 700 3082 290 9 8.5 -3.1 | 75 3 -2.9 -0.8 5 500 5680 330 11 5.5 -9.5 | 39 9 -5.9 -7.2 6 400 7330 340 33 11.3 -31.0 | 0 29 -0.1 -28.7 7 300 9330 340 60 20.5 -56.4 | 350 55 9.1 -54.1 8 250 10540 350 66 11.5 -65.0 | 360 63 0.1 -62.7 9 220 11345 345 81 21.0 -78.2 | 353 77 9.6 -75.9 10 200 11930 360 64 -0.0 -64.0 | 10 63 -11.4 -61.7 11 178 12633 0 44 -0.0 -44.0 | 15 43 -11.4 -41.7 12 150 13670 310 27 20.7 -17.4 | 328 18 9.3 -15.0 13 100 16150 300 17 14.7 -8.5 | 332 7 3.3 -6.2 Wind Parameters Mean winds (0-6000m): 251.5 at 15.5 knts Storm direction: 281.5 at 11.6 knts Shear (0-3000m) pos: 3.6 neg: 0.0 tot: 3.6 10-3/s Storm rel Dir Shear (0-3000m): -49.3 deg Storm rel helicity (0-3000m) pos: 259.9 neg: -0.3 tot: 259.6 m^2/s^2 ave: 86.5 10^-3 m/s^2 rel: 0.59 Storm rel vorticity (0-3000m) horiz: 10.9 stream: 6.5 10^-3/s Energy-Hel index: 0.02 Bulk Rich Number: 0.21 Bulk Shear: 69.50 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 ------------------------------------------------------------------------------- 500 174 20 149 26| 19.3 0.0 19.3|138.3 0.0 138.3 276.6 0.94| 21.6 20.4 1000 197 24 170 26| 13.9 0.0 13.9|225.2 0.0 225.2 225.2 0.93| 17.7 16.5 1500 206 25 179 24| 8.9 0.0 8.9|237.0 0.0 237.0 158.0 0.87| 13.4 11.7 2000 213 24 185 23| 6.6 0.0 6.6|255.7 0.0 255.7 127.8 0.79| 12.5 9.9 2500 218 23 188 20| 5.0 0.0 5.0|259.9 0.0 259.9 104.0 0.71| 11.7 8.3 3000 221 21 187 18| 3.6 0.0 3.6|259.9 -0.3 259.6 86.5 0.59| 10.9 6.5 4000 229 18 189 14| 2.9 0.0 2.9|259.9 -2.1 257.8 64.5 0.54| 8.6 4.6 5000 239 16 194 11| 2.4 0.0 2.4|259.9 -3.1 256.8 51.4 0.51| 7.1 3.6 6000 251 15 205 8| 2.5 0.0 2.5|260.1 -14.2 245.9 41.0 0.41| 6.5 2.7 Wrote GIF file: /home/apache/climate/data/raob//LFBD/skewt/LFBD.skewt.20251218.00.gif