UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025042812.upa.cvt Date: 1200Z 28 APR 25 Searching for FK870... Searching the city database file for: FK870 ... Date:1200Z 28 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 52 1 920 -10547 SFC 892 -5722 31.6 22.6 59 9.0 24.8 0 0 314.9 318.7 301.6 376.3 19.71 3 850 1527 25.6 15.6 54 10.0 18.6 50 8 313.0 315.5 297.4 353.8 13.23 4 790 2164 19.6 11.6 60 8.0 14.3 65 12 313.2 315.3 296.0 347.0 10.93 5 700 3192 11.6 2.6 54 9.0 6.5 80 31 315.3 316.6 293.3 336.2 6.61 6 500 5910 -6.1 -19.1 35 13.0 -10.5 85 20 325.6 325.9 292.1 331.4 1.69 7 400 7630 -14.1 -22.1 51 8.0 -16.6 110 8 336.7 337.0 294.9 342.5 1.63 8 300 9750 -29.7 -42.7 27 13.0 -31.3 115 3 343.5 343.6 295.4 344.7 0.30 9 250 11020 -39.7 -50.7 30 11.0 -40.5 215 12 347.0 347.1 296.1 347.6 0.15 10 200 12500 -52.7 -63.7 25 11.0 -52.9 165 7 349.3 349.3 296.5 349.5 0.04 11 150 14300 -67.1 -74.1 36 7.0 -67.1 165 14 354.5 354.5 297.6 354.5 0.01 12 100 16640 -80.3 -87.3 30 7.0 -80.3 15 14 372.6 372.6 301.0 372.6 0.00 13 80 17916 -75.5 128 13 407.0 14 75 18290 -75.7 160 12 414.2 15 70 18690 -74.3 195 12 425.4 16 64 19213 -69.9 219 17 446.1 17 50 20670 -70.7 285 29 476.9 18 35 22822 -63.9 295 21 545.8 19 33 23183 -63.3 297 19 556.7 20 32 23372 -63.7 298 19 560.5 21 30 23770 -61.7 300 17 576.4 22 28 24202 -56.9 325 21 601.3 23 26 24673 -54.5 351 24 621.0 24 20 26350 -54.9 85 38 668.1 25 19 26680 -52.5 685.5 26 16 27797 -49.9 728.5 27 14 28682 -43.9 777.2 28 12 29722 -41.7 820.0 29 11 30314 -39.7 847.9 30 11 30314 -39.9 847.2 TRP 790 2164 19.6 11.6 60 8.0 14.3 65 12 313.2 315.3 296.0 347.0 10.93 WND Sounding variables and indices 1000-500 mb thick: 5858.00 m Freezing level: 568.93 mb = 4973.29 m = 16316.36 ft Wetbulb zero: 623.91 mb = 4121.62 m = 13522.22 ft Precipitable water: 1.31 inches Sfc-500 mean rel hum: 49.62 % Est. max temperature: 31.06 C = 87.91 F Sfc-Lift cond lev (LCL): 783.55 mb = 2233.99 m = 7329.27 ft T: 19.06 C 700-500 lapse rate: 6.51 C/km ThetaE index: 44.88 C Layer 850.0- 400.0 mb Conv cond level (CCL): 724.35 mb = 2901.51 m = 9519.26 ft Mean mixing ratio: 13.88 g/kg Conv temperature: 31.47 C = 88.65 F Cap Strength: 0.92 C Lifted Index: -5.30 C Risk: Severe thunderstorms probable Lifted Index @300 mb: -4.64 C Lifted Index @700 mb: -0.67 C Showalter Index: -4.45 C Risk: Severe thunderstorms possible Total Totals Index: 53.40 C Risk: Scattered heavy thunderstorms Vertical Totals Index: 31.70 C Cross Totals Index: 21.70 C K Index: 38.30 Risk: > 80 % chance of thunderstorms Sweat Index: 311.20 Risk: Showers and thunderstorms possible Energy Index: -4.31 Risk: Severe Thunderstorms probable Parcel Indices Parcel: using 100 mb layer CAPE (B+): 1647.48 J/kg Max Up Vert Vel: 57.40 m/s Conv Inhibition (B-): 127.70 J/kg Cap Strength: 1.42 C Lift Cond Lev (LCL): 737.91 mb = 2743.89 m = 9002.15 ft Lev Free Conv (LFC): 712.91 mb = 3036.74 m = 9962.95 ft Equ Level (EL): 142.91 mb = 14579.51 m = 47832.46 ft B at Equ Level: 1642.10 J/kg Max Parcel Lev (MPL): 82.91 mb = 17711.93 m = 58109.29 ft Wind level data Storm motion: 82 at 2 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 -5722 0 0 -0.0 -0.0 | 262 2 2.4 0.4 1 850 1527 50 8 -6.1 -5.1 | 38 6 -3.7 -4.8 2 790 2164 65 12 -10.9 -5.1 | 61 10 -8.4 -4.7 3 700 3192 80 31 -30.5 -5.4 | 80 29 -28.1 -5.0 4 500 5910 85 20 -19.9 -1.7 | 85 18 -17.5 -1.4 5 400 7630 110 8 -7.5 2.7 | 121 6 -5.1 3.1 6 300 9750 115 3 -2.7 1.3 | 170 2 -0.3 1.6 7 250 11020 215 12 6.9 9.8 | 222 14 9.3 10.2 8 200 12500 165 7 -1.8 6.8 | 185 7 0.6 7.1 9 150 14300 165 14 -3.6 13.5 | 175 14 -1.2 13.9 10 100 16640 15 14 -3.6 -13.5 | 5 13 -1.2 -13.2 11 70 18690 195 12 3.1 11.6 | 205 13 5.6 11.9 12 50 20670 285 29 28.0 -7.5 | 283 31 30.5 -7.2 13 30 23770 300 17 14.7 -8.5 | 295 19 17.2 -8.1 14 20 26350 85 38 -37.9 -3.3 | 85 36 -35.4 -3.0 Wind Parameters Mean winds (0-6000m): 51.8 at 3.3 knts Storm direction: 81.8 at 2.5 knts Shear (0-3000m) pos: 0.6 neg: 0.0 tot: 0.6 10-3/s Storm rel Dir Shear (0-3000m): 73.3 deg Storm rel helicity (0-3000m) pos: 2.2 neg: 0.0 tot: 2.2 m^2/s^2 ave: 0.7 10^-3 m/s^2 rel: 0.97 Storm rel vorticity (0-3000m) horiz: 0.6 stream: 0.6 10^-3/s Energy-Hel index: 0.01 Bulk Rich Number: 1208.31 Bulk Shear: 1.36 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 ------------------------------------------------------------------------------- 500 114 0 259 2| 0.6 0.0 0.6| 0.4 0.0 0.4 0.7 1.00| 0.6 0.6 1000 110 0 256 2| 0.6 0.0 0.6| 0.7 0.0 0.7 0.7 1.00| 0.6 0.6 1500 104 1 253 2| 0.6 0.0 0.6| 1.1 0.0 1.1 0.7 1.00| 0.6 0.6 2000 97 1 251 2| 0.6 0.0 0.6| 1.4 0.0 1.4 0.7 0.99| 0.6 0.6 2500 90 1 253 1| 0.6 0.0 0.6| 1.8 0.0 1.8 0.7 0.98| 0.6 0.6 3000 82 2 262 1| 0.6 0.0 0.6| 2.2 0.0 2.2 0.7 0.97| 0.6 0.6 4000 67 2 318 1| 0.6 0.0 0.6| 3.2 0.0 3.2 0.8 0.95| 0.6 0.6 5000 57 3 352 1| 0.6 0.0 0.6| 4.3 0.0 4.3 0.9 0.93| 0.6 0.6 6000 52 3 5 2| 0.6 0.0 0.6| 5.6 0.0 5.6 0.9 0.91| 0.6 0.6 Wrote GIF file: /home/apache/climate/data/raob//FK870/skewt/FK870.skewt.20250428.12.gif