UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025121806.upa.cvt Date: 0600Z 18 DEC 25 Searching for ETHA... Searching the city database file for: ETHA ... Date:0600Z 18 DEC 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 194 SFC 935 757 1.0 0.6 97 0.4 0.8 230 3 279.5 280.2 277.3 291.3 4.27 2 925 843 7.0 2.0 70 5.0 4.6 265 3 286.5 287.3 281.3 300.0 4.78 3 850 1536 4.0 0.1 76 3.9 2.2 0 0 290.3 291.1 282.8 303.4 4.53 4 700 3088 -6.7 -7.6 93 0.9 -7.1 255 15 295.1 295.6 283.1 304.3 3.08 5 500 5650 -21.3 -27.3 58 6.0 -22.4 280 7 307.1 307.2 285.2 309.8 0.81 6 400 7260 -33.5 -43.5 36 10.0 -34.3 180 3 311.4 311.5 286.1 312.2 0.20 TRP WND Sounding variables and indices 1000-500 mb thick: 5456.00 m Freezing level: 793.93 mb = 2116.19 m = 6942.79 ft Wetbulb zero: 814.55 mb = 1876.50 m = 6156.42 ft Precipitable water: 0.56 inches Sfc-500 mean rel hum: 78.29 % Est. max temperature: 13.60 C = 56.49 F Sfc-Lift cond lev (LCL): 929.10 mb = 807.61 m = 2649.60 ft T: 4.53 C 700-500 lapse rate: 5.70 C/km ThetaE index: 0.00 C Layer 935.0- -0.0 mb Conv cond level (CCL): 935.00 mb = 757.00 m = 2483.57 ft Mean mixing ratio: 4.61 g/kg Conv temperature: 1.65 C = 34.97 F Cap Strength: 2.62 C Lifted Index: 6.69 C Risk: None Lifted Index @700 mb: 1.95 C Showalter Index: 5.28 C Risk: None Total Totals Index: 46.70 C Risk: Scattered moderate thunderstorms Vertical Totals Index: 25.30 C Cross Totals Index: 21.40 C K Index: 24.50 Risk: 20-40 % chance of thunderstorms Sweat Index: 8.20 Risk: None Energy Index: 1.30 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 15.67 J/kg Max Up Vert Vel: 5.60 m/s Conv Inhibition (B-): 957.37 J/kg Cap Strength: 6.41 C Lift Cond Lev (LCL): 828.38 mb = 1741.95 m = 5714.98 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 290 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 ---------------------------------------------------------- 0 935 757 230 3 2.3 1.9 | 140 5 -3.3 4.0 1 925 843 265 3 3.0 0.3 | 131 3 -2.6 2.3 2 850 1536 0 0 -0.0 -0.0 | 110 6 -5.6 2.0 3 700 3088 255 15 14.5 3.9 | 236 11 8.9 5.9 4 500 5650 280 7 6.9 -1.2 | 238 2 1.3 0.8 5 400 7260 180 3 0.0 3.0 | 132 8 -5.6 5.0 Wind Parameters Mean winds (0-6000m): 260.0 at 7.9 knts Storm direction: 290.0 at 6.0 knts Shear (0-3000m) pos: 1.1 neg: 2.5 tot: 3.6 10-3/s Storm rel Dir Shear (0-3000m): 101.0 deg Storm rel helicity (0-3000m) pos: 2.5 neg: -24.6 tot: -22.0 m^2/s^2 ave: -7.3 10^-3 m/s^2 rel: -0.63 Storm rel vorticity (0-3000m) horiz: 4.9 stream: -3.1 10^-3/s Energy-Hel index: 0.00 Bulk Rich Number: 3.58 Bulk Shear: 4.38 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 ------------------------------------------------------------------------------- 500 272 2 120 4| 3.4 0.0 3.4| 0.0 -2.6 -2.6 -5.1 -0.56| 4.7 -2.6 1000 271 2 116 5| 2.2 0.0 2.2| 0.8 -5.1 -4.3 -4.3 -0.50| 3.9 -1.9 1500 295 3 107 3| 1.5 1.8 3.3| 0.8 -9.8 -9.0 -6.0 -0.66| 4.5 -3.0 2000 275 4 141 2| 1.1 2.9 4.0| 0.8 -15.8 -15.0 -7.5 -0.73| 5.3 -3.8 2500 256 6 186 4| 0.9 3.0 3.9| 1.1 -24.6 -23.4 -9.4 -0.70| 5.5 -3.9 3000 257 7 202 4| 1.1 2.5 3.6| 2.5 -24.6 -22.0 -7.3 -0.63| 4.9 -3.1 4000 259 8 216 4| 1.2 1.9 3.1| 3.6 -24.6 -20.9 -5.2 -0.54| 4.2 -2.3 5000 261 8 219 4| 1.2 1.4 2.5| 3.6 -25.1 -21.4 -4.3 -0.51| 3.7 -1.9 6000 260 8 213 4| 1.0 1.1 2.0| 3.6 -30.3 -26.7 -4.4 -0.54| 3.7 -2.0 Wrote GIF file: /home/apache/climate/data/raob//ETHA/skewt/ETHA.skewt.20251218.06.gif