UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025120512.upa.cvt Date: 1200Z 5 DEC 25 Searching for FK870... Searching the city database file for: FK870 ... Date:1200Z 5 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 58 1 920 -10545 SFC 891 -5550 31.0 14.0 36 17.0 19.3 110 7 314.4 316.5 296.5 349.6 11.35 3 850 1523 24.2 12.2 47 12.0 16.3 55 12 311.5 313.5 295.3 344.0 10.56 4 738 2735 12.4 7.4 72 5.0 9.3 70 9 311.5 313.1 294.0 338.6 8.79 5 700 3176 8.2 5.2 81 3.0 6.4 90 7 311.6 313.1 293.3 336.1 7.95 6 500 5880 -4.1 -35.1 7 31.0 -11.5 95 18 328.0 328.1 291.6 329.5 0.39 7 400 7610 -15.5 -34.5 18 19.0 -19.5 70 10 334.8 334.9 293.5 336.8 0.51 8 300 9700 -31.7 -43.7 30 12.0 -33.0 15 1 340.7 340.8 294.7 341.8 0.27 9 250 10960 -41.7 -56.7 18 15.0 -42.5 95 4 344.1 344.1 295.4 344.4 0.07 10 200 12440 -53.3 -66.3 19 13.0 -53.6 180 20 348.4 348.4 296.3 348.5 0.03 11 150 14230 -68.1 -78.1 23 10.0 -68.2 240 28 352.8 352.8 297.3 352.8 0.01 12 100 16580 -81.1 -89.1 25 8.0 -81.1 270 27 371.0 371.0 300.8 371.0 0.00 13 86 17450 -81.3 245 30 387.0 14 83 17654 -81.9 239 30 389.7 15 82 17723 -81.9 237 30 391.1 16 78 18011 -80.3 229 31 400.0 17 70 18638 -78.3 211 33 416.9 18 50 20600 -76.1 155 39 464.2 19 36 22579 -60.7 92 43 549.7 20 34 22935 -61.1 90 47 557.7 21 30 23720 -58.3 85 57 585.7 22 29 23933 -58.3 87 57 591.4 23 28 24154 -58.9 89 58 595.7 TRP 738 2735 12.4 7.4 72 5.0 9.3 70 9 311.5 313.1 294.0 338.6 8.79 WND Sounding variables and indices 1000-500 mb thick: 5822.00 m Freezing level: 566.67 mb = 4978.67 m = 16334.01 ft Wetbulb zero: 628.30 mb = 4044.38 m = 13268.81 ft Precipitable water: 1.10 inches Sfc-500 mean rel hum: 50.55 % Est. max temperature: 28.22 C = 82.79 F Sfc-Lift cond lev (LCL): 696.03 mb = 3221.75 m = 10569.92 ft T: 7.99 C 700-500 lapse rate: 4.55 C/km ThetaE index: 20.11 C Layer 850.0- 400.0 mb Conv cond level (CCL): 709.95 mb = 3058.34 m = 10033.79 ft Mean mixing ratio: 10.44 g/kg Conv temperature: 28.28 C = 82.91 F Cap Strength: -0.47 C Lifted Index: 0.98 C Risk: Showers probable Lifted Index @300 mb: -0.08 C Lifted Index @700 mb: -0.76 C Showalter Index: 1.10 C Risk: Showers probable Total Totals Index: 44.60 C Risk: Scattered moderate thunderstorms Vertical Totals Index: 28.30 C Cross Totals Index: 16.30 C K Index: 37.50 Risk: > 80 % chance of thunderstorms Sweat Index: 188.40 Risk: None Energy Index: -2.73 Risk: Severe Thunderstorms probable Parcel Indices Parcel: using 100 mb layer CAPE (B+): 64.00 J/kg Max Up Vert Vel: 11.31 m/s Conv Inhibition (B-): 190.14 J/kg Cap Strength: 2.20 C Lift Cond Lev (LCL): 704.92 mb = 3117.59 m = 10228.18 ft Lev Free Conv (LFC): 699.92 mb = 3176.92 m = 10422.84 ft Equ Level (EL): 569.92 mb = 4828.15 m = 15840.18 ft B at Equ Level: 53.59 J/kg Max Parcel Lev (MPL): 389.92 mb = 7795.43 m = 25575.24 ft Wind level data Storm motion: 109 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 ---------------------------------------------------------- 0 891 -5550 110 7 -6.6 2.4 | 151 0 -0.1 0.2 1 850 1523 55 12 -9.8 -6.9 | 20 10 -3.4 -9.1 2 738 2735 70 9 -8.5 -3.1 | 21 6 -2.0 -5.3 3 700 3176 90 7 -7.0 0.0 | 14 2 -0.5 -2.2 4 500 5880 95 18 -17.9 1.6 | 87 11 -11.5 -0.6 5 400 7610 70 10 -9.4 -3.4 | 28 6 -2.9 -5.6 6 300 9700 15 1 -0.3 -1.0 | 297 7 6.2 -3.2 7 250 10960 95 4 -4.0 0.3 | 307 3 2.5 -1.9 8 200 12440 180 20 0.0 20.0 | 200 19 6.5 17.8 9 150 14230 240 28 24.2 14.0 | 249 33 30.7 11.8 10 100 16580 270 27 27.0 -0.0 | 274 34 33.5 -2.2 11 50 20600 155 39 -16.5 35.3 | 163 35 -10.0 33.1 12 44 21336 100 27 -26.6 4.7 | 97 20 -20.1 2.5 13 30 23720 85 57 -56.8 -5.0 | 82 51 -50.3 -7.2 14 26 24384 95 59 -58.8 5.1 | 93 52 -52.3 2.9 Wind Parameters Mean winds (0-6000m): 78.8 at 9.1 knts Storm direction: 108.8 at 6.8 knts Shear (0-3000m) pos: 0.0 neg: 0.7 tot: 0.7 10-3/s Storm rel Dir Shear (0-3000m): -106.8 deg Storm rel helicity (0-3000m) pos: 0.0 neg: -0.6 tot: -0.6 m^2/s^2 ave: -0.2 10^-3 m/s^2 rel: -0.34 Storm rel vorticity (0-3000m) horiz: 0.7 stream: -0.2 10^-3/s Energy-Hel index: 0.00 Bulk Rich Number: 67.46 Bulk Shear: 0.95 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 92 7 18 2| 0.0 0.6 0.6| 0.0 -0.0 -0.0 -0.1 -0.68| 0.6 -0.4 1000 91 7 22 2| 0.0 0.6 0.6| 0.0 -0.1 -0.1 -0.1 -0.50| 0.6 -0.3 1500 91 7 26 2| 0.0 0.6 0.6| 0.0 -0.1 -0.1 -0.1 -0.41| 0.6 -0.3 2000 90 8 29 2| 0.0 0.6 0.6| 0.0 -0.2 -0.2 -0.1 -0.37| 0.7 -0.2 2500 89 8 31 3| 0.0 0.7 0.7| 0.0 -0.4 -0.4 -0.2 -0.35| 0.7 -0.2 3000 88 8 32 3| 0.0 0.7 0.7| 0.0 -0.6 -0.6 -0.2 -0.34| 0.7 -0.2 4000 85 8 33 3| 0.0 0.7 0.7| 0.0 -1.1 -1.1 -0.3 -0.34| 0.7 -0.2 5000 82 9 33 4| 0.0 0.7 0.7| 0.0 -2.1 -2.1 -0.4 -0.35| 0.7 -0.2 6000 79 9 32 5| 0.0 0.7 0.7| 0.0 -3.5 -3.5 -0.6 -0.37| 0.7 -0.3 Wrote GIF file: /home/apache/climate/data/raob//FK870/skewt/FK870.skewt.20251205.12.gif