UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025042712.upa.cvt Date: 1200Z 27 APR 25 Searching for FK870... Searching the city database file for: FK870 ... Date:1200Z 27 APR 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 75 1 920 -10531 SFC 892 -5714 26.0 20.0 70 6.0 21.6 260 4 309.1 312.2 298.7 359.9 16.73 3 850 1524 21.6 15.6 69 6.0 17.5 135 7 308.8 311.3 296.4 348.9 13.23 4 778 2286 17.0 10.0 63 7.0 12.5 95 13 311.7 313.6 294.9 342.4 9.96 5 700 3178 10.0 6.9 81 3.1 8.1 50 13 313.6 315.3 294.7 341.4 8.96 6 500 5890 -5.7 -8.7 79 3.0 -7.1 85 23 326.1 326.9 294.1 339.3 3.97 7 400 7620 -14.7 -17.1 82 2.4 -15.6 90 14 335.9 336.4 295.4 344.7 2.50 8 300 9730 -29.7 -31.9 81 2.2 -30.1 145 6 343.5 343.7 295.9 346.9 0.88 9 250 11000 -40.3 -42.8 77 2.5 -40.5 195 12 346.2 346.2 296.1 347.6 0.35 10 200 12480 -52.9 -56.0 69 3.1 -53.0 195 9 349.0 349.0 296.5 349.4 0.10 11 150 14280 -66.1 -68.3 74 2.2 -66.1 50 16 356.2 356.2 298.0 356.3 0.03 12 100 16650 -82.5 -82.5 100 0.0 -82.5 180 9 368.3 368.3 300.2 368.3 0.00 13 93 17054 -83.7 194 10 373.7 14 85 17558 -80.7 211 11 389.5 15 79 17976 -76.7 225 12 406.0 16 70 18670 -77.9 245 23 417.7 17 67 18920 -78.9 248 23 420.8 18 57 19865 -68.3 260 21 464.8 19 50 20650 -69.3 270 20 480.2 20 47 21016 -70.1 259 19 486.8 21 35 22803 -59.9 143 14 556.3 22 30 23760 -60.3 75 12 580.3 23 23 25447 -51.5 107 23 651.9 24 20 26350 -53.1 105 32 673.6 25 17 27408 -48.7 102 39 719.8 26 16 27805 -50.5 101 42 726.5 27 14 28677 -49.9 756.8 28 14 28677 -49.3 758.9 29 12 29692 -47.5 799.4 30 12 29692 -47.3 800.2 31 11 30271 -44.3 831.2 32 10 30911 -43.3 857.9 33 10 30911 -43.7 856.4 TRP 778 2286 17.0 10.0 63 7.0 12.5 95 13 311.7 313.6 294.9 342.4 9.96 WND Sounding variables and indices 1000-500 mb thick: 5815.00 m Freezing level: 572.61 mb = 4905.39 m = 16093.60 ft Wetbulb zero: 593.18 mb = 4512.67 m = 14805.16 ft Precipitable water: 1.60 inches Sfc-500 mean rel hum: 75.64 % Est. max temperature: 29.38 C = 84.88 F Sfc-Lift cond lev (LCL): 817.39 mb = 1861.00 m = 6105.57 ft T: 19.57 C 700-500 lapse rate: 5.79 C/km ThetaE index: 20.57 C Layer 850.0- 400.0 mb Conv cond level (CCL): 735.50 mb = 2760.54 m = 9056.78 ft Mean mixing ratio: 13.15 g/kg Conv temperature: 29.52 C = 85.14 F Cap Strength: 2.24 C Lifted Index: -2.61 C Risk: Severe thunderstorms possible Lifted Index @300 mb: -1.07 C Lifted Index @700 mb: -0.45 C Showalter Index: -2.35 C Risk: Severe thunderstorms possible Total Totals Index: 48.60 C Risk: Scattered moderate thunderstorms Vertical Totals Index: 27.30 C Cross Totals Index: 21.30 C K Index: 39.80 Risk: > 80 % chance of thunderstorms Sweat Index: 224.20 Risk: None Energy Index: -1.92 Risk: Scattered severe thunderstorms Parcel Indices Parcel: using 100 mb layer CAPE (B+): 640.35 J/kg Max Up Vert Vel: 35.79 m/s Conv Inhibition (B-): 48.85 J/kg Cap Strength: 2.24 C Lift Cond Lev (LCL): 768.84 mb = 2386.39 m = 7829.26 ft Lev Free Conv (LFC): 703.84 mb = 3131.87 m = 10275.04 ft Equ Level (EL): 193.84 mb = 12675.85 m = 41586.92 ft B at Equ Level: 633.52 J/kg Max Parcel Lev (MPL): 113.84 mb = 15892.50 m = 52140.11 ft Wind level data Storm motion: 215 at 4 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 ---------------------------------------------------------- 0 892 -5714 260 4 3.9 0.7 | 326 3 1.7 -2.5 1 850 1524 135 7 -4.9 4.9 | 103 7 -7.2 1.7 2 778 2286 95 13 -13.0 1.1 | 82 15 -15.2 -2.1 3 700 3178 50 13 -10.0 -8.4 | 46 17 -12.2 -11.6 4 500 5890 85 23 -22.9 -2.0 | 78 26 -25.1 -5.2 5 400 7620 90 14 -14.0 0.0 | 79 17 -16.2 -3.2 6 300 9730 145 6 -3.4 4.9 | 107 6 -5.7 1.7 7 250 11000 195 12 3.1 11.6 | 186 8 0.9 8.4 8 200 12480 195 9 2.3 8.7 | 181 5 0.1 5.5 9 150 14280 50 16 -12.3 -10.3 | 47 20 -14.5 -13.5 10 100 16650 180 9 0.0 9.0 | 159 6 -2.2 5.8 11 75 18288 235 13 10.6 7.5 | 243 9 8.4 4.2 12 70 18670 245 23 20.8 9.7 | 251 20 18.6 6.5 13 50 20650 270 20 20.0 -0.0 | 280 18 17.8 -3.2 14 45 21336 250 18 16.9 6.2 | 259 15 14.7 2.9 15 30 23760 75 12 -11.6 -3.1 | 65 15 -13.8 -6.3 16 27 24384 110 12 -11.3 4.1 | 94 14 -13.5 0.9 17 20 26350 105 32 -30.9 8.3 | 99 34 -33.1 5.1 18 15 27432 100 46 -45.3 8.0 | 96 48 -47.5 4.8 Wind Parameters Mean winds (0-6000m): 184.7 at 5.2 knts Storm direction: 214.7 at 3.9 knts Shear (0-3000m) pos: 0.0 neg: 0.7 tot: 0.7 10-3/s Storm rel Dir Shear (0-3000m): -136.2 deg Storm rel helicity (0-3000m) pos: 0.0 neg: -1.6 tot: -1.6 m^2/s^2 ave: -0.5 10^-3 m/s^2 rel: -0.82 Storm rel vorticity (0-3000m) horiz: 0.7 stream: -0.6 10^-3/s Energy-Hel index: 0.00 Bulk Rich Number: 57.94 Bulk Shear: 11.05 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 27 4 31 8| 0.0 0.7 0.7| 0.0 -0.3 -0.3 -0.7 -0.68| 0.7 -0.5 1000 18 4 26 8| 0.0 0.7 0.7| 0.0 -0.6 -0.6 -0.6 -0.68| 0.7 -0.5 1500 6 4 20 8| 0.0 0.7 0.7| 0.0 -0.9 -0.9 -0.6 -0.70| 0.7 -0.5 2000 348 4 10 8| 0.0 0.7 0.7| 0.0 -1.1 -1.1 -0.5 -0.74| 0.7 -0.5 2500 317 4 353 7| 0.0 0.7 0.7| 0.0 -1.3 -1.3 -0.5 -0.79| 0.7 -0.6 3000 272 5 325 4| 0.0 0.7 0.7| 0.0 -1.6 -1.6 -0.5 -0.82| 0.7 -0.6 4000 220 5 243 1| 0.0 0.7 0.7| 0.0 -2.2 -2.2 -0.5 -0.79| 0.8 -0.6 5000 199 5 159 2| 0.0 0.7 0.7| 0.0 -3.2 -3.2 -0.6 -0.75| 0.8 -0.6 6000 185 5 138 3| 0.0 0.7 0.7| 0.0 -4.7 -4.7 -0.8 -0.72| 0.8 -0.6 Wrote GIF file: /home/apache/climate/data/raob//FK870/skewt/FK870.skewt.20250427.12.gif