UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025120412.upa.cvt Date: 1200Z 4 DEC 25 Searching for LFBD... Searching the city database file for: LFBD ... Date:1200Z 4 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 1004 61 11.4 11.0 97 0.4 11.2 255 7 284.2 285.6 284.1 306.9 8.23 1 1000 79 11.6 9.2 85 2.4 10.3 255 7 284.8 286.0 283.4 305.0 7.31 2 925 724 6.2 4.2 87 2.0 5.2 275 25 285.6 286.6 281.9 301.3 5.59 3 850 1410 0.6 -0.6 92 1.2 0.1 280 27 286.8 287.5 280.9 299.0 4.30 4 700 2940 -9.7 -12.2 82 2.5 -10.5 275 31 291.7 292.1 280.5 298.2 2.14 5 500 5440 -27.5 -30.7 74 3.2 -27.9 260 44 299.5 299.6 282.0 301.5 0.59 6 400 7010 -39.5 -51.5 27 12.0 -40.1 260 33 303.7 303.7 283.0 304.0 0.08 7 303 8846 -53.3 -67.3 17 14.0 -53.5 255 31 309.3 309.3 285.1 309.4 0.01 8 300 8910 -53.3 -67.3 17 14.0 -53.5 255 31 310.2 310.2 285.4 310.3 0.01 9 250 10070 -54.7 -72.7 9 18.0 -54.9 275 38 324.7 324.7 290.2 324.8 0.01 10 200 11500 -55.9 -79.9 3 24.0 -56.1 280 38 344.2 344.2 295.3 344.3 0.00 11 150 13330 -56.7 -86.7 1 30.0 -57.0 280 36 372.4 372.4 301.0 372.4 0.00 12 100 15880 -58.1 -88.1 1 30.0 -58.5 265 35 415.5 415.5 307.2 415.5 0.00 TRP 303 8846 -53.3 -67.3 17 14.0 -53.5 255 31 309.3 309.3 285.1 309.4 0.01 WND Sounding variables and indices 1000-500 mb thick: 5361.00 m Freezing level: 841.26 mb = 1499.13 m = 4918.33 ft Wetbulb zero: 848.89 mb = 1420.34 m = 4659.85 ft Precipitable water: 0.67 inches Sfc-500 mean rel hum: 82.82 % Est. max temperature: 13.89 C = 57.01 F Sfc-Lift cond lev (LCL): 998.05 mb = 95.16 m = 312.20 ft T: 11.46 C 700-500 lapse rate: 7.12 C/km ThetaE index: 8.77 C Layer 1000.0- 500.0 mb Conv cond level (CCL): 918.41 mb = 782.02 m = 2565.66 ft Mean mixing ratio: 6.27 g/kg Conv temperature: 12.92 C = 55.26 F Cap Strength: 0.34 C Lifted Index: -0.51 C Risk: Thunderstorms probable Lifted Index @300 mb: 5.36 C Lifted Index @700 mb: -1.87 C Showalter Index: 2.13 C Risk: Showers probable Total Totals Index: 55.00 C Risk: Severe Thunderstorms probable Vertical Totals Index: 28.10 C Cross Totals Index: 26.90 C K Index: 25.00 Risk: 40-60 % chance of thunderstorms Sweat Index: 218.00 Risk: None Energy Index: 0.43 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 247.01 J/kg Max Up Vert Vel: 22.23 m/s Conv Inhibition (B-): 0.80 J/kg Cap Strength: 0.34 C Lift Cond Lev (LCL): 924.52 mb = 728.21 m = 2389.11 ft Lev Free Conv (LFC): 899.52 mb = 950.61 m = 3118.77 ft Equ Level (EL): 459.52 mb = 6034.00 m = 19796.36 ft B at Equ Level: 246.18 J/kg Max Parcel Lev (MPL): 309.52 mb = 8705.42 m = 28560.75 ft Wind level data Storm motion: 299 at 24 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 1004 61 255 7 6.8 1.8 | 133 20 -14.4 13.6 1 1000 79 255 7 6.8 1.8 | 133 20 -14.4 13.6 2 925 724 275 25 24.9 -2.2 | 201 10 3.7 9.6 3 850 1410 280 27 26.6 -4.7 | 217 9 5.4 7.1 4 700 2940 275 31 30.9 -2.7 | 227 13 9.7 9.1 5 500 5440 260 44 43.3 7.6 | 229 29 22.2 19.4 6 400 7010 260 33 32.5 5.7 | 213 21 11.3 17.5 7 303 8846 255 31 29.9 8.0 | 204 22 8.8 19.8 8 300 8910 255 31 29.9 8.0 | 204 22 8.8 19.8 9 250 10070 275 38 37.9 -3.3 | 243 19 16.7 8.4 10 200 11500 280 38 37.4 -6.6 | 252 17 16.3 5.2 11 150 13330 280 36 35.5 -6.3 | 249 15 14.3 5.5 12 100 15880 265 35 34.9 3.1 | 223 20 13.7 14.8 Wind Parameters Mean winds (0-6000m): 269.0 at 32.3 knts Storm direction: 299.0 at 24.2 knts Shear (0-3000m) pos: 3.6 neg: 0.9 tot: 4.5 10-3/s Storm rel Dir Shear (0-3000m): 94.5 deg Storm rel helicity (0-3000m) pos: 72.5 neg: 0.0 tot: 72.5 m^2/s^2 ave: 24.2 10^-3 m/s^2 rel: 0.76 Storm rel vorticity (0-3000m) horiz: 4.7 stream: 3.6 10^-3/s Energy-Hel index: 0.11 Bulk Rich Number: 5.15 Bulk Shear: 47.93 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 ------------------------------------------------------------------------------- 500 266 13 148 15| 14.2 0.0 14.2| 46.4 0.0 46.4 92.8 0.82| 14.4 11.7 1000 273 19 168 11| 10.1 0.0 10.1| 63.3 0.0 63.3 63.3 0.85| 10.5 9.0 1500 276 21 181 10| 7.3 0.0 7.3| 67.3 0.0 67.3 44.9 0.85| 7.7 6.5 2000 276 23 191 9| 5.5 0.4 5.9| 69.1 0.0 69.1 34.6 0.83| 6.1 5.1 2500 277 24 199 9| 4.4 0.6 5.0| 70.7 0.0 70.7 28.3 0.80| 5.2 4.2 3000 276 25 205 10| 3.6 0.9 4.5| 72.5 0.0 72.5 24.2 0.76| 4.7 3.6 4000 275 28 214 11| 2.7 1.5 4.2| 75.8 0.0 75.8 18.9 0.64| 4.3 2.8 5000 272 30 220 14| 2.2 1.8 4.0| 75.8 -2.7 73.1 14.6 0.52| 4.1 2.2 6000 269 32 222 17| 1.8 1.4 3.2| 75.8 -23.3 52.5 8.8 0.39| 4.0 1.6 Wrote GIF file: /home/apache/climate/data/raob//LFBD/skewt/LFBD.skewt.20251204.12.gif