UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025120712.upa.cvt Date: 1200Z 7 DEC 25 Searching for FK870... Searching the city database file for: FK870 ... Date:1200Z 7 DEC 25 Station: FK870 WMO ident: 64870 ------------------------------------------------------------------------------- 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 67 1 920 -10541 SFC 891 -5550 28.8 7.8 27 21.0 15.7 40 6 312.1 313.5 293.1 335.2 7.47 3 850 1518 22.2 7.2 38 15.0 13.0 35 12 309.4 310.8 292.4 332.5 7.51 4 782 2235 16.8 5.8 48 11.0 10.2 80 15 311.1 312.5 292.8 334.0 7.41 5 700 3167 9.2 2.2 62 7.0 5.3 135 9 312.7 313.9 292.4 332.7 6.42 6 500 5880 -5.5 -28.5 14 23.0 -11.8 80 10 326.3 326.5 291.4 329.0 0.73 7 400 7600 -17.1 -39.1 13 22.0 -21.0 40 11 332.8 332.8 292.8 334.0 0.32 8 300 9700 -30.3 -47.3 17 17.0 -32.1 230 13 342.7 342.7 295.1 343.4 0.18 9 250 10970 -41.3 -55.3 21 14.0 -42.1 265 20 344.7 344.7 295.5 345.0 0.08 10 200 12440 -53.3 -58.2 55 4.9 -53.5 220 30 348.4 348.4 296.3 348.7 0.07 11 150 14230 -69.5 -73.3 58 3.8 -69.5 225 31 350.4 350.4 296.7 350.4 0.01 12 100 16540 -82.1 -84.1 71 2.0 -82.1 210 25 369.1 369.1 300.4 369.1 0.00 13 88 17246 -86.7 282 20 373.6 14 87 17308 -86.9 288 19 374.4 15 84 17501 -83.9 308 18 384.3 16 70 18540 -73.1 50 14 428.0 17 62 19255 -70.9 68 16 448.0 18 60 19449 -71.1 73 16 451.8 19 52 20297 -70.5 94 18 472.0 20 50 20530 -70.7 100 19 476.9 21 47 20897 -70.9 104 22 484.9 22 45 21154 -71.3 106 24 490.0 23 37 22333 -63.9 537.2 TRP 782 2235 16.8 5.8 48 11.0 10.2 80 15 311.1 312.5 292.8 334.0 7.41 WND Sounding variables and indices 1000-500 mb thick: 5813.00 m Freezing level: 574.83 mb = 4864.93 m = 15960.87 ft Wetbulb zero: 637.91 mb = 3915.89 m = 12847.26 ft Precipitable water: 0.87 inches Sfc-500 mean rel hum: 41.49 % Est. max temperature: 28.60 C = 83.48 F Sfc-Lift cond lev (LCL): 654.97 mb = 3703.11 m = 12149.17 ft T: 6.30 C 700-500 lapse rate: 5.42 C/km ThetaE index: 5.02 C Layer 700.0- 400.0 mb Conv cond level (CCL): 593.55 mb = 4497.01 m = 14753.80 ft Mean mixing ratio: 7.48 g/kg Conv temperature: 35.89 C = 96.60 F Cap Strength: 3.62 C Lifted Index: 4.15 C Risk: None Lifted Index @300 mb: 7.82 C Lifted Index @700 mb: 2.08 C Showalter Index: 4.56 C Risk: None Total Totals Index: 40.40 C Risk: None Vertical Totals Index: 27.70 C Cross Totals Index: 12.70 C K Index: 27.90 Risk: 40-60 % chance of thunderstorms Sweat Index: 120.40 Risk: None Energy Index: -0.54 Risk: Scattered severe thunderstorms Parcel Indices Parcel: using 100 mb layer CAPE (B+): 3.21 J/kg Max Up Vert Vel: 2.53 m/s Conv Inhibition (B-): 16590.35 J/kg Cap Strength: 4.15 C Lift Cond Lev (LCL): 670.70 mb = 3511.76 m = 11521.37 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 67 at 6 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 ---------------------------------------------------------- 0 891 -5550 40 6 -3.9 -4.6 | 316 3 2.0 -2.1 1 850 1518 35 12 -6.9 -9.8 | 8 7 -1.0 -7.3 2 782 2235 80 15 -14.8 -2.6 | 89 9 -8.9 -0.1 3 700 3167 135 9 -6.4 6.4 | 177 9 -0.5 8.9 4 500 5880 80 10 -9.8 -1.7 | 101 4 -4.0 0.8 5 400 7600 40 11 -7.1 -8.4 | 11 6 -1.2 -5.9 6 300 9700 230 13 10.0 8.4 | 236 19 15.9 10.9 7 250 10970 265 20 19.9 1.7 | 261 26 25.8 4.2 8 200 12440 220 30 19.3 23.0 | 225 36 25.2 25.5 9 150 14230 225 31 21.9 21.9 | 229 37 27.8 24.4 10 100 16540 210 25 12.5 21.7 | 217 30 18.4 24.2 11 73 18288 25 12 -5.1 -10.9 | 354 8 0.8 -8.4 12 70 18540 50 14 -10.7 -9.0 | 37 8 -4.8 -6.5 13 50 20530 100 19 -18.7 3.3 | 114 14 -12.8 5.8 14 42 21336 110 27 -25.4 9.2 | 121 23 -19.5 11.7 Wind Parameters Mean winds (0-6000m): 37.0 at 8.5 knts Storm direction: 67.0 at 6.4 knts Shear (0-3000m) pos: 0.0 neg: 0.4 tot: 0.4 10-3/s Storm rel Dir Shear (0-3000m): 35.6 deg Storm rel helicity (0-3000m) pos: 1.9 neg: 0.0 tot: 1.9 m^2/s^2 ave: 0.6 10^-3 m/s^2 rel: 0.82 Storm rel vorticity (0-3000m) horiz: 0.4 stream: 0.4 10^-3/s Energy-Hel index: 0.00 Bulk Rich Number: 4.24 Bulk Shear: 0.76 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 38 6 318 3| 0.0 0.4 0.4| 0.3 0.0 0.3 0.6 0.96| 0.4 0.4 1000 38 6 322 3| 0.0 0.4 0.4| 0.6 0.0 0.6 0.6 0.94| 0.4 0.4 1500 38 7 325 3| 0.0 0.4 0.4| 1.0 0.0 1.0 0.6 0.91| 0.4 0.4 2000 38 7 329 3| 0.0 0.4 0.4| 1.3 0.0 1.3 0.6 0.88| 0.4 0.4 2500 38 7 332 3| 0.0 0.4 0.4| 1.6 0.0 1.6 0.6 0.85| 0.4 0.4 3000 38 7 335 4| 0.0 0.4 0.4| 1.9 0.0 1.9 0.6 0.82| 0.4 0.4 4000 37 8 341 4| 0.0 0.4 0.4| 2.5 0.0 2.5 0.6 0.76| 0.4 0.3 5000 37 8 346 4| 0.0 0.4 0.4| 3.1 0.0 3.1 0.6 0.70| 0.4 0.3 6000 37 9 350 4| 0.0 0.4 0.4| 3.7 0.0 3.7 0.6 0.65| 0.4 0.3 Wrote GIF file: /home/apache/climate/data/raob//FK870/skewt/FK870.skewt.20251207.12.gif