UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025043018.upa.cvt Date: 1800Z 30 APR 25 Searching for ETHA... Searching the city database file for: ETHA ... Date:1800Z 30 APR 25 Station: ETHA WMO ident: 10954 Latitude: 47.83 Longitude: 10.87 Elevation: 757.00 ------------------------------------------------------------------------------- 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 164 SFC 934 757 20.8 4.8 35 16.0 11.8 50 9 299.7 300.8 287.7 316.9 5.78 2 925 841 19.8 3.8 35 16.0 11.0 35 7 299.6 300.5 287.3 315.7 5.43 3 850 1560 12.8 1.8 47 11.0 7.0 40 5 299.6 300.5 287.1 314.9 5.13 4 700 3149 0.0 -7.0 59 7.0 -3.0 235 11 302.5 303.1 286.2 312.4 3.23 5 500 5750 -18.9 -30.9 34 12.0 -21.1 320 7 310.0 310.1 286.0 312.0 0.58 6 400 7370 -30.5 -38.5 45 8.0 -31.4 355 7 315.3 315.4 287.6 316.6 0.34 7 300 9350 -45.9 -52.9 45 7.0 -46.2 25 11 320.7 320.7 289.0 321.0 0.09 8 250 10540 -54.9 -62.9 36 8.0 -55.1 30 11 324.4 324.5 290.2 324.6 0.03 9 200 11930 -64.5 -71.5 38 7.0 -64.6 35 23 330.6 330.6 291.9 330.7 0.01 10 197 12022 -65.1 -72.1 37 7.0 -65.1 30 19 331.1 331.1 292.0 331.1 0.01 11 150 13710 -58.3 -84.3 2 26.0 -58.5 335 15 369.6 369.6 300.5 369.6 0.00 12 100 16260 -58.3 -86.3 2 28.0 -58.7 290 21 415.1 415.1 307.2 415.1 0.00 TRP 197 12022 -65.1 -72.1 37 7.0 -65.1 30 19 331.1 331.1 292.0 331.1 0.01 WND Sounding variables and indices 1000-500 mb thick: 5586.00 m Freezing level: 700.00 mb = 3149.00 m = 10331.24 ft Wetbulb zero: 744.57 mb = 2643.81 m = 8673.80 ft Precipitable water: 0.61 inches Sfc-500 mean rel hum: 47.66 % Est. max temperature: 21.88 C = 71.38 F Sfc-Lift cond lev (LCL): 735.86 mb = 2740.08 m = 8989.64 ft T: 3.29 C 700-500 lapse rate: 7.27 C/km ThetaE index: 4.93 C Layer 925.0- 400.0 mb Conv cond level (CCL): 691.21 mb = 3246.67 m = 10651.69 ft Mean mixing ratio: 5.26 g/kg Conv temperature: 23.78 C = 74.81 F Cap Strength: 2.23 C Lifted Index: 0.18 C Risk: Showers probable Lifted Index @300 mb: 4.18 C Lifted Index @700 mb: 1.62 C Showalter Index: 0.42 C Risk: Thunderstorms probable Total Totals Index: 52.40 C Risk: Scattered heavy thunderstorms Vertical Totals Index: 31.70 C Cross Totals Index: 20.70 C K Index: 26.50 Risk: 40-60 % chance of thunderstorms Sweat Index: 106.60 Risk: None Energy Index: -0.56 Risk: Scattered severe thunderstorms Parcel Indices Parcel: using 100 mb layer CAPE (B+): 0.81 J/kg Max Up Vert Vel: 1.28 m/s Conv Inhibition (B-): 7325.61 J/kg Cap Strength: 2.23 C Lift Cond Lev (LCL): 722.99 mb = 2884.51 m = 9463.49 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 316 at 6 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 ---------------------------------------------------------- 0 934 757 50 9 -6.9 -5.8 | 83 11 -11.1 -1.4 1 925 841 35 7 -4.0 -5.7 | 81 8 -8.2 -1.4 2 850 1560 40 5 -3.2 -3.8 | 94 7 -7.4 0.5 3 700 3149 235 11 9.0 6.3 | 204 12 4.8 10.7 4 500 5750 320 7 4.5 -5.4 | 341 1 0.3 -1.0 5 400 7370 355 7 0.6 -7.0 | 54 4 -3.6 -2.6 6 300 9350 25 11 -4.6 -10.0 | 58 10 -8.8 -5.6 7 250 10540 30 11 -5.5 -9.5 | 62 11 -9.7 -5.2 8 200 11930 35 23 -13.2 -18.8 | 50 23 -17.4 -14.5 9 197 12022 30 19 -9.5 -16.5 | 49 18 -13.7 -12.1 10 150 13710 335 15 6.3 -13.6 | 347 9 2.2 -9.2 11 100 16260 290 21 19.7 -7.2 | 280 16 15.6 -2.8 Wind Parameters Mean winds (0-6000m): 286.4 at 8.0 knts Storm direction: 316.4 at 6.0 knts Shear (0-3000m) pos: 0.5 neg: 3.4 tot: 3.9 10-3/s Storm rel Dir Shear (0-3000m): 135.7 deg Storm rel helicity (0-3000m) pos: 10.6 neg: -26.1 tot: -15.5 m^2/s^2 ave: -5.2 10^-3 m/s^2 rel: -0.43 Storm rel vorticity (0-3000m) horiz: 5.6 stream: -2.4 10^-3/s Energy-Hel index: 0.00 Bulk Rich Number: 0.04 Bulk Shear: 19.67 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 38 7 84 8| 0.0 3.6 3.6| 2.2 -0.8 1.4 2.8 0.18| 4.2 0.7 1000 36 6 86 8| 0.0 2.6 2.6| 3.8 -3.8 -0.0 -0.0 -0.02| 3.6 -0.1 1500 20 6 77 7| 0.0 3.8 3.8| 3.8 -8.7 -4.9 -3.3 -0.37| 4.6 -1.7 2000 354 7 55 4| 0.0 4.4 4.4| 3.8 -14.0 -10.2 -5.1 -0.53| 5.5 -2.9 2500 295 8 247 3| 0.0 4.1 4.1| 5.1 -26.1 -21.0 -8.4 -0.54| 6.1 -3.3 3000 264 8 216 6| 0.5 3.4 3.9| 10.6 -26.1 -15.5 -5.2 -0.43| 5.6 -2.4 4000 266 8 220 7| 1.1 2.5 3.6| 16.1 -26.1 -10.0 -2.5 -0.28| 4.9 -1.4 5000 271 8 225 6| 1.2 2.0 3.3| 17.9 -26.1 -8.3 -1.7 -0.18| 4.4 -0.8 6000 286 8 239 4| 1.2 1.7 2.9| 18.7 -26.1 -7.4 -1.2 -0.13| 3.9 -0.5 Wrote GIF file: /home/apache/climate/data/raob//ETHA/skewt/ETHA.skewt.20250430.18.gif