UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025101712.upa.cvt Date: 1200Z 17 OCT 25 Searching for FK870... Searching the city database file for: FK870 ... Date:1200Z 17 OCT 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 86 1 920 -10520 SFC 893 -5874 27.2 19.2 62 8.0 21.4 70 6 310.2 313.2 298.4 358.7 15.88 3 850 1538 21.2 16.2 73 5.0 17.7 70 13 308.4 310.9 296.6 350.0 13.76 4 807 1985 17.4 13.0 75 4.4 14.5 80 13 308.9 311.1 295.4 344.6 11.75 5 700 3184 8.6 5.0 78 3.6 6.5 90 25 312.0 313.5 293.4 336.3 7.84 6 500 5890 -6.1 -9.2 79 3.1 -7.5 135 18 325.6 326.4 293.9 338.3 3.81 7 400 7610 -16.3 -21.3 65 5.0 -17.9 115 8 333.8 334.2 294.3 340.0 1.75 8 300 9700 -32.5 -37.4 62 4.9 -33.2 100 12 339.6 339.7 294.7 341.5 0.51 9 250 10960 -42.5 -46.3 66 3.8 -42.8 65 12 342.9 342.9 295.3 343.8 0.24 10 200 12420 -54.3 -58.5 60 4.2 -54.4 80 17 346.8 346.8 296.0 347.1 0.07 11 150 14200 -69.3 -71.6 72 2.3 -69.3 100 31 350.7 350.7 296.8 350.8 0.02 12 100 16570 -77.7 -80.5 64 2.8 -77.7 15 16 377.6 377.6 301.9 377.6 0.01 13 93 16987 -76.5 350 16 387.9 14 74 18309 -74.7 273 14 417.9 15 59 19629 -73.9 447.6 16 58 19728 -73.9 449.8 17 57 19830 -74.3 451.2 TRP 807 1985 17.4 13.0 75 4.4 14.5 80 13 308.9 311.1 295.4 344.6 11.75 WND Sounding variables and indices 1000-500 mb thick: 5804.00 m Freezing level: 582.99 mb = 4767.10 m = 15639.91 ft Wetbulb zero: 607.28 mb = 4326.74 m = 14195.16 ft Precipitable water: 1.51 inches Sfc-500 mean rel hum: 76.66 % Est. max temperature: 27.70 C = 81.86 F Sfc-Lift cond lev (LCL): 794.87 mb = 2112.96 m = 6932.19 ft T: 16.46 C 700-500 lapse rate: 5.43 C/km ThetaE index: 22.39 C Layer 850.0- 500.0 mb Conv cond level (CCL): 766.67 mb = 2417.37 m = 7930.92 ft Mean mixing ratio: 13.42 g/kg Conv temperature: 27.04 C = 80.68 F Cap Strength: 0.69 C Lifted Index: -3.07 C Risk: Severe thunderstorms possible Lifted Index @300 mb: -3.98 C Lifted Index @700 mb: -1.91 C Showalter Index: -3.13 C Risk: Severe thunderstorms possible Total Totals Index: 49.60 C Risk: Scattered heavy thunderstorms Vertical Totals Index: 27.30 C Cross Totals Index: 22.30 C K Index: 39.90 Risk: > 80 % chance of thunderstorms Sweat Index: 250.40 Risk: None Energy Index: -2.36 Risk: Severe Thunderstorms probable Parcel Indices Parcel: using 100 mb layer CAPE (B+): 1172.23 J/kg Max Up Vert Vel: 48.42 m/s Conv Inhibition (B-): 80.32 J/kg Cap Strength: 1.21 C Lift Cond Lev (LCL): 778.55 mb = 2287.75 m = 7505.66 ft Lev Free Conv (LFC): 753.55 mb = 2562.80 m = 8408.03 ft Equ Level (EL): 163.55 mb = 13664.92 m = 44831.86 ft B at Equ Level: 1171.20 J/kg Max Parcel Lev (MPL): 93.55 mb = 16952.91 m = 55619.11 ft Wind level data Storm motion: 100 at 7 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 ---------------------------------------------------------- 0 893 -5874 70 6 -5.6 -2.1 | 345 3 0.9 -3.2 1 850 1538 70 13 -12.2 -4.4 | 46 8 -5.7 -5.6 2 807 1985 80 13 -12.8 -2.3 | 62 7 -6.3 -3.4 3 700 3184 90 25 -25.0 0.0 | 86 19 -18.5 -1.1 4 500 5890 135 18 -12.7 12.7 | 152 13 -6.2 11.6 5 400 7610 115 8 -7.3 3.4 | 162 2 -0.7 2.2 6 300 9700 100 12 -11.8 2.1 | 100 5 -5.3 0.9 7 250 10960 65 12 -10.9 -5.1 | 35 8 -4.4 -6.2 8 200 12420 80 17 -16.7 -3.0 | 68 11 -10.2 -4.1 9 150 14200 100 31 -30.5 5.4 | 100 24 -24.0 4.2 10 100 16570 15 16 -4.1 -15.5 | 352 17 2.4 -16.6 11 72 18288 265 14 13.9 1.2 | 270 20 20.5 0.1 Wind Parameters Mean winds (0-6000m): 70.0 at 8.8 knts Storm direction: 100.0 at 6.6 knts Shear (0-3000m) pos: 0.0 neg: 0.5 tot: 0.5 10-3/s Storm rel Dir Shear (0-3000m): 38.5 deg Storm rel helicity (0-3000m) pos: 2.5 neg: 0.0 tot: 2.5 m^2/s^2 ave: 0.8 10^-3 m/s^2 rel: 0.88 Storm rel vorticity (0-3000m) horiz: 0.5 stream: 0.4 10^-3/s Energy-Hel index: 0.01 Bulk Rich Number: 1250.49 Bulk Shear: 0.94 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 70 6 347 3| 0.0 0.5 0.5| 0.4 0.0 0.4 0.8 0.99| 0.5 0.5 1000 70 6 351 3| 0.0 0.5 0.5| 0.8 0.0 0.8 0.8 0.97| 0.5 0.5 1500 70 7 355 3| 0.0 0.5 0.5| 1.2 0.0 1.2 0.8 0.95| 0.5 0.5 2000 70 7 359 4| 0.0 0.5 0.5| 1.7 0.0 1.7 0.8 0.93| 0.5 0.5 2500 70 7 3 4| 0.0 0.5 0.5| 2.1 0.0 2.1 0.8 0.91| 0.5 0.4 3000 70 7 6 4| 0.0 0.5 0.5| 2.5 0.0 2.5 0.8 0.88| 0.5 0.4 4000 70 8 13 4| 0.0 0.5 0.5| 3.3 0.0 3.3 0.8 0.83| 0.5 0.4 5000 70 8 18 4| 0.0 0.5 0.5| 4.1 0.0 4.1 0.8 0.78| 0.5 0.4 6000 70 9 23 5| 0.0 0.5 0.5| 5.0 0.0 5.0 0.8 0.74| 0.5 0.4 Wrote GIF file: /home/apache/climate/data/raob//FK870/skewt/FK870.skewt.20251017.12.gif