UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025101812.upa.cvt Date: 1200Z 18 OCT 25 Searching for FK870... Searching the city database file for: FK870 ... Date:1200Z 18 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 83 1 920 -10522 SFC 893 -5875 28.2 19.2 58 9.0 21.7 70 6 311.3 314.3 298.7 359.9 15.88 3 850 1539 22.8 15.8 65 7.0 17.9 60 13 310.0 312.6 296.8 350.9 13.40 4 775 2332 15.2 10.7 74 4.5 12.3 80 11 310.2 312.1 294.8 342.2 10.49 5 700 3187 10.0 3.0 62 7.0 6.0 90 26 313.6 314.9 293.0 334.8 6.80 6 500 5900 -5.7 -13.7 53 8.0 -8.9 70 18 326.1 326.6 293.1 335.1 2.65 7 400 7610 -16.7 -22.7 60 6.0 -18.4 100 15 333.3 333.6 294.0 338.8 1.54 8 300 9720 -31.9 -37.9 55 6.0 -32.7 65 14 340.4 340.5 294.8 342.3 0.49 9 250 10980 -41.1 -50.1 37 9.0 -41.7 55 7 345.0 345.0 295.7 345.6 0.16 10 200 12450 -53.3 -64.3 25 11.0 -53.5 110 18 348.4 348.4 296.3 348.5 0.03 11 150 14240 -68.5 -77.5 26 9.0 -68.5 120 23 352.1 352.1 297.1 352.1 0.01 12 100 16590 -77.7 -84.7 31 7.0 -77.7 100 19 377.6 377.6 301.9 377.6 0.00 13 96 16825 -77.3 85 21 382.8 14 87 17392 -76.7 51 24 395.0 15 79 17947 -77.3 16 28 404.8 16 75 18245 -78.7 358 30 407.9 17 70 18640 -77.3 15 23 419.0 18 68 18806 -76.7 25 24 423.8 19 55 20047 -67.9 101 34 470.5 20 53 20269 -66.7 114 36 478.3 21 50 20620 -66.9 135 39 485.8 22 43 21537 -63.5 100 28 515.6 23 37 22464 -61.1 100 36 544.4 24 30 23770 -59.5 100 47 582.4 25 27 24432 -57.5 96 46 605.9 26 20 26342 -54.3 670.0 27 17 27392 -50.9 712.7 28 13 29161 -45.1 789.7 29 12 29698 -43.5 813.6 30 11 30282 -44.1 831.9 TRP 775 2332 15.2 10.7 74 4.5 12.3 80 11 310.2 312.1 294.8 342.2 10.49 WND Sounding variables and indices 1000-500 mb thick: 5817.00 m Freezing level: 572.61 mb = 4915.03 m = 16125.22 ft Wetbulb zero: 619.42 mb = 4173.10 m = 13691.09 ft Precipitable water: 1.37 inches Sfc-500 mean rel hum: 61.60 % Est. max temperature: 28.50 C = 83.30 F Sfc-Lift cond lev (LCL): 783.54 mb = 2238.21 m = 7343.12 ft T: 16.10 C 700-500 lapse rate: 5.79 C/km ThetaE index: 25.08 C Layer 850.0- 500.0 mb Conv cond level (CCL): 753.91 mb = 2564.01 m = 8412.00 ft Mean mixing ratio: 13.26 g/kg Conv temperature: 28.03 C = 82.45 F Cap Strength: 0.37 C Lifted Index: -3.02 C Risk: Severe thunderstorms possible Lifted Index @300 mb: -3.97 C Lifted Index @700 mb: -0.80 C Showalter Index: -3.08 C Risk: Severe thunderstorms possible Total Totals Index: 50.00 C Risk: Scattered heavy thunderstorms Vertical Totals Index: 28.50 C Cross Totals Index: 21.50 C K Index: 37.30 Risk: > 80 % chance of thunderstorms Sweat Index: 253.60 Risk: None Energy Index: -3.11 Risk: Severe Thunderstorms probable Parcel Indices Parcel: using 100 mb layer CAPE (B+): 1096.98 J/kg Max Up Vert Vel: 46.84 m/s Conv Inhibition (B-): 79.41 J/kg Cap Strength: 0.91 C Lift Cond Lev (LCL): 762.12 mb = 2472.99 m = 8113.37 ft Lev Free Conv (LFC): 737.12 mb = 2753.07 m = 9032.27 ft Equ Level (EL): 167.12 mb = 13567.44 m = 44512.05 ft B at Equ Level: 1094.28 J/kg Max Parcel Lev (MPL): 97.12 mb = 16757.79 m = 54978.95 ft Wind level data Storm motion: 94 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 -5875 70 6 -5.6 -2.1 | 339 3 1.0 -2.5 1 850 1539 60 13 -11.3 -6.5 | 34 8 -4.7 -7.0 2 775 2332 80 11 -10.8 -1.9 | 61 5 -4.2 -2.4 3 700 3187 90 26 -26.0 0.0 | 89 19 -19.4 -0.5 4 500 5900 70 18 -16.9 -6.2 | 57 12 -10.3 -6.6 5 400 7610 100 15 -14.8 2.6 | 105 8 -8.2 2.2 6 300 9720 65 14 -12.7 -5.9 | 44 9 -6.1 -6.4 7 250 10980 55 7 -5.7 -4.0 | 349 5 0.9 -4.5 8 200 12450 110 18 -16.9 6.2 | 119 12 -10.3 5.7 9 150 14240 120 23 -19.9 11.5 | 130 17 -13.3 11.0 10 100 16590 100 19 -18.7 3.3 | 103 12 -12.1 2.8 11 74 18288 355 30 2.6 -29.9 | 343 32 9.2 -30.3 12 70 18640 15 23 -6.0 -22.2 | 358 23 0.6 -22.7 13 50 20620 135 39 -27.6 27.6 | 142 34 -21.0 27.1 14 45 21336 100 26 -25.6 4.5 | 102 19 -19.0 4.1 15 30 23770 100 47 -46.3 8.2 | 101 40 -39.7 7.7 16 26 24384 95 45 -44.8 3.9 | 95 38 -38.2 3.5 Wind Parameters Mean winds (0-6000m): 63.9 at 8.8 knts Storm direction: 93.9 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): 40.9 deg Storm rel helicity (0-3000m) pos: 2.0 neg: 0.0 tot: 2.0 m^2/s^2 ave: 0.7 10^-3 m/s^2 rel: 0.79 Storm rel vorticity (0-3000m) horiz: 0.5 stream: 0.4 10^-3/s Energy-Hel index: 0.01 Bulk Rich Number: 1170.13 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 64 6 341 3| 0.0 0.5 0.5| 0.3 0.0 0.3 0.7 0.97| 0.5 0.5 1000 65 6 346 3| 0.0 0.5 0.5| 0.7 0.0 0.7 0.7 0.94| 0.5 0.5 1500 65 7 350 3| 0.0 0.5 0.5| 1.0 0.0 1.0 0.7 0.91| 0.5 0.4 2000 65 7 354 3| 0.0 0.5 0.5| 1.3 0.0 1.3 0.7 0.87| 0.5 0.4 2500 65 7 358 3| 0.0 0.5 0.5| 1.6 0.0 1.6 0.7 0.83| 0.5 0.4 3000 65 7 1 4| 0.0 0.5 0.5| 2.0 0.0 2.0 0.7 0.79| 0.5 0.4 4000 65 8 7 4| 0.0 0.5 0.5| 2.5 0.0 2.5 0.6 0.71| 0.5 0.4 5000 64 8 13 4| 0.0 0.5 0.5| 3.1 0.0 3.1 0.6 0.64| 0.5 0.3 6000 64 9 17 5| 0.0 0.5 0.5| 3.5 0.0 3.5 0.6 0.58| 0.5 0.3 Wrote GIF file: /home/apache/climate/data/raob//FK870/skewt/FK870.skewt.20251018.12.gif