UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025102112.upa.cvt Date: 1200Z 21 OCT 25 Searching for U3921... Searching the city database file for: U3921 ... Date:1200Z 21 OCT 25 Station: U3921 WMO ident: 23921 Latitude: 60.68 Longitude: 60.43 ------------------------------------------------------------------------------- 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 ------------------------------------------------------------------------------- SFC 1015 90 3.8 -3.2 60 7.0 1.1 220 3 275.8 276.3 273.4 284.0 2.97 1 1000 211 4.4 -2.6 60 7.0 1.5 215 3 277.5 278.1 274.7 286.3 3.15 2 985 334 4.4 -2.6 60 7.0 1.5 223 6 278.8 279.3 275.5 287.7 3.20 3 925 843 1.4 -2.4 76 3.8 -0.2 255 21 280.7 281.3 276.9 290.4 3.46 4 892 1135 0.2 -2.4 83 2.6 -0.9 264 25 282.4 283.0 277.9 292.5 3.59 5 850 1520 -0.9 -4.0 79 3.1 -2.1 275 31 285.2 285.8 279.0 294.8 3.34 6 723 2796 -7.5 -11.4 74 3.9 -8.8 262 31 291.5 291.9 280.5 298.1 2.21 7 700 3047 -9.3 -12.8 76 3.5 -10.4 260 31 292.2 292.5 280.6 298.3 2.04 8 624 3925 -15.3 -17.9 80 2.6 -16.0 260 33 295.1 295.4 281.2 299.7 1.50 9 565 4670 -18.5 -21.1 80 2.6 -19.1 260 34 299.8 300.0 282.9 303.8 1.26 10 500 5570 -24.7 -28.0 74 3.3 -25.2 260 36 302.9 303.1 283.6 305.4 0.76 11 442 6456 -31.1 -34.5 72 3.4 -31.5 305.7 305.8 284.3 307.3 0.46 TRP WND Sounding variables and indices 1000-500 mb thick: 5359.00 m Freezing level: 884.36 mb = 1204.63 m = 3952.16 ft Wetbulb zero: 930.51 mb = 794.92 m = 2607.97 ft Precipitable water: 0.51 inches Sfc-500 mean rel hum: 76.28 % Est. max temperature: 12.26 C = 54.06 F Sfc-Lift cond lev (LCL): 910.78 mb = 967.31 m = 3173.56 ft T: 0.89 C 700-500 lapse rate: 6.10 C/km ThetaE index: 0.00 C Layer 1015.0- 0.0 mb Conv cond level (CCL): 753.01 mb = 2475.34 m = 8121.10 ft Mean mixing ratio: 3.28 g/kg Conv temperature: 17.99 C = 64.38 F Cap Strength: 11.25 C Lifted Index: 12.78 C Risk: None Lifted Index @700 mb: 7.38 C Showalter Index: 7.98 C Risk: None Total Totals Index: 44.50 C Risk: Scattered moderate thunderstorms Vertical Totals Index: 23.80 C Cross Totals Index: 20.70 C K Index: 16.30 Risk: < 20 % chance of thunderstorms Sweat Index: 98.00 Risk: None Energy Index: 2.19 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 15.45 J/kg Max Up Vert Vel: 5.56 m/s Conv Inhibition (B-): 1868.78 J/kg Cap Strength: 12.68 C Lift Cond Lev (LCL): 882.47 mb = 1220.40 m = 4003.89 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 292 at 22 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 1015 90 220 3 1.9 2.3 | 120 21 -18.1 10.6 1 1000 211 215 3 1.7 2.5 | 120 21 -18.3 10.7 2 925 843 255 21 20.3 5.4 | 181 14 0.2 13.7 3 850 1520 275 31 30.9 -2.7 | 243 12 10.8 5.6 4 700 3047 260 31 30.5 5.4 | 218 17 10.5 13.7 5 500 5570 260 36 35.5 6.3 | 227 21 15.4 14.5 Wind Parameters Mean winds (0-6000m): 262.4 at 28.9 knts Storm direction: 292.4 at 21.7 knts Shear (0-3000m) pos: 5.0 neg: 1.3 tot: 6.4 10-3/s Storm rel Dir Shear (0-3000m): 97.5 deg Storm rel helicity (0-3000m) pos: 129.8 neg: -23.2 tot: 106.6 m^2/s^2 ave: 35.5 10^-3 m/s^2 rel: 0.62 Storm rel vorticity (0-3000m) horiz: 7.1 stream: 4.4 10^-3/s Energy-Hel index: 0.01 Bulk Rich Number: 0.22 Bulk Shear: 70.04 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 ------------------------------------------------------------------------------- 500 233 7 131 19| 11.3 0.0 11.3| 55.5 0.0 55.5 111.1 0.93| 12.0 11.1 1000 253 14 150 14| 11.6 0.0 11.6|103.0 0.0 103.0 103.0 0.92| 12.9 11.9 1500 262 18 171 11| 10.1 0.0 10.1|129.8 0.0 129.8 86.6 0.94| 11.5 10.8 2000 266 22 188 10| 7.5 0.7 8.2|129.8 -7.5 122.3 61.2 0.81| 9.3 7.6 2500 266 23 199 10| 6.0 1.1 7.1|129.8 -15.6 114.3 45.7 0.70| 8.0 5.6 3000 265 25 205 11| 5.0 1.3 6.4|129.8 -23.2 106.6 35.5 0.62| 7.1 4.4 4000 264 27 210 13| 3.8 1.1 4.8|135.9 -23.2 112.7 28.2 0.62| 5.6 3.5 5000 263 28 214 14| 3.0 0.9 4.0|142.0 -23.2 118.8 23.8 0.62| 4.7 2.9 6000 NO DATA | 3.0 0.9 4.0| | Wrote GIF file: /home/apache/climate/data/raob//U3921/skewt/U3921.skewt.20251021.12.gif