UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025101700.upa.cvt Date: 0000Z 17 OCT 25 Searching for U2271... Searching the city database file for: U2271 ... Date:0000Z 17 OCT 25 Station: U2271 WMO ident: 22271 Latitude: 67.88 Longitude: 44.13 ------------------------------------------------------------------------------- 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 SFC 989 7 4.8 0.8 75 4.0 3.0 225 17 278.8 279.5 276.7 290.1 4.09 2 925 547 -0.3 -4.2 75 3.9 -1.8 230 29 279.0 279.5 275.3 287.5 3.02 3 898 783 -2.3 -5.6 78 3.3 -3.5 232 29 279.3 279.8 275.2 287.2 2.80 4 850 1217 -5.1 -7.4 84 2.3 -5.9 235 29 280.8 281.2 275.7 288.1 2.58 5 837 1338 -6.1 -8.7 82 2.6 -7.0 235 29 281.0 281.4 275.5 287.7 2.36 6 829 1413 -4.7 -7.7 79 3.0 -5.8 235 29 283.2 283.7 277.0 290.6 2.58 7 809 1605 -7.7 -11.5 74 3.8 -8.8 235 29 282.0 282.4 275.5 287.7 1.96 8 700 2717 -14.7 -19.3 68 4.6 -15.7 235 29 286.2 286.4 276.5 289.8 1.18 9 638 3412 -19.5 -24.1 67 4.6 -20.4 232 34 288.4 288.6 277.2 291.1 0.85 10 538 4651 -30.1 -36.1 56 6.0 -30.7 227 44 290.2 290.3 277.3 291.3 0.33 11 500 5170 -32.3 -39.3 50 7.0 -32.9 225 48 293.7 293.7 278.9 294.5 0.25 12 461 5740 -36.1 -44.1 44 8.0 -36.6 220 57 295.8 295.8 279.7 296.4 0.17 13 400 6720 -40.1 -48.1 42 8.0 -40.5 210 73 302.9 302.9 282.7 303.3 0.12 14 337 7878 -45.0 -54.2 35 9.2 -45.4 210 83 311.3 311.4 285.9 311.6 0.07 15 301 8628 -48.3 -58.3 31 10.0 -48.6 210 69 317.0 317.0 287.8 317.2 0.05 16 300 8650 -48.3 -58.3 31 10.0 -48.6 210 68 317.3 317.3 287.9 317.5 0.05 17 292 8828 -48.5 -58.5 30 10.0 -48.8 212 64 319.5 319.5 288.6 319.6 0.05 18 250 9850 -47.7 -58.7 27 11.0 -48.1 225 42 335.2 335.2 293.2 335.4 0.06 19 233 10315 -47.3 -58.3 27 11.0 -47.7 222 37 342.6 342.6 295.0 342.8 0.06 20 200 11320 -49.5 -61.5 23 12.0 -49.9 215 27 354.4 354.4 297.6 354.6 0.05 21 177 12117 -50.3 -62.3 23 12.0 -50.7 238 19 365.7 365.7 299.8 365.9 0.05 22 164 12616 -48.1 -61.1 21 13.0 -48.7 253 13 377.4 377.4 301.9 377.7 0.06 23 150 13200 -49.9 -62.9 20 13.0 -50.4 270 7 384.1 384.1 302.9 384.3 0.05 24 107 15386 -55.3 -68.3 18 13.0 -55.7 262 5 412.8 412.8 306.9 413.0 0.04 25 100 15820 -54.1 -67.1 19 13.0 -54.6 260 5 423.2 423.2 308.1 423.4 0.05 26 70 18100 -56.9 -69.9 18 13.0 -57.4 255 13 462.7 462.7 312.0 462.9 0.04 27 69 18191 -56.3 -69.3 18 13.0 -56.8 256 13 465.9 465.9 312.3 466.1 0.05 28 60 19071 -59.9 -72.9 17 13.0 -60.3 269 11 476.8 476.8 313.2 477.0 0.03 29 50 20210 -59.9 -72.9 17 13.0 -60.4 285 9 502.3 502.3 315.1 502.6 0.04 30 35 22433 -60.9 -73.9 16 13.0 -61.5 553.7 553.7 318.3 554.0 0.05 TRP 301 8628 -48.3 -58.3 31 10.0 -48.6 210 69 317.0 317.0 287.8 317.2 0.05 WND 337 7878 -45.0 -54.2 35 9.2 -45.4 210 83 311.3 311.4 285.9 311.6 0.07 Sounding variables and indices 1000-500 mb thick: 5253.00 m Freezing level: 928.76 mb = 515.24 m = 1690.40 ft Wetbulb zero: 948.93 mb = 340.86 m = 1118.30 ft Precipitable water: 0.35 inches Sfc-500 mean rel hum: 68.20 % Est. max temperature: 6.93 C = 44.47 F Sfc-Lift cond lev (LCL): 929.84 mb = 504.89 m = 1656.44 ft T: 0.10 C 700-500 lapse rate: 7.17 C/km ThetaE index: 2.95 C Layer 925.0- 850.0 mb Conv cond level (CCL): 871.38 mb = 1020.82 m = 3349.11 ft Mean mixing ratio: 3.30 g/kg Conv temperature: 6.10 C = 42.98 F Cap Strength: 2.83 C Lifted Index: 5.24 C Risk: None Lifted Index @300 mb: 20.59 C Lifted Index @700 mb: 2.10 C Showalter Index: 5.36 C Risk: None Total Totals Index: 52.10 C Risk: Scattered heavy thunderstorms Vertical Totals Index: 27.20 C Cross Totals Index: 24.90 C K Index: 15.20 Risk: < 20 % chance of thunderstorms Sweat Index: 168.00 Risk: None Energy Index: 1.30 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 2.25 J/kg Max Up Vert Vel: 2.12 m/s Conv Inhibition (B-): 40339.79 J/kg Cap Strength: 4.83 C Lift Cond Lev (LCL): 885.96 mb = 889.75 m = 2919.09 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 258 at 27 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 ---------------------------------------------------------- 0 989 7 225 17 12.0 12.0 | 114 16 -14.6 6.6 1 925 547 230 29 22.2 18.6 | 162 14 -4.4 13.2 2 850 1217 235 29 23.8 16.6 | 166 12 -2.9 11.2 3 700 2717 235 29 23.8 16.6 | 166 12 -2.9 11.2 4 500 5170 225 48 33.9 33.9 | 194 29 7.3 28.5 5 400 6720 210 73 36.5 63.2 | 190 59 9.9 57.8 6 337 7878 210 83 41.5 71.9 | 193 68 14.9 66.5 7 301 8628 210 69 34.5 59.8 | 188 55 7.9 54.3 8 300 8650 210 68 34.0 58.9 | 188 54 7.4 53.5 9 250 9850 225 42 29.7 29.7 | 187 24 3.1 24.3 10 200 11320 215 27 15.5 22.1 | 146 20 -11.1 16.7 11 150 13200 270 7 7.0 -0.0 | 75 20 -19.6 -5.4 12 100 15820 260 5 4.9 0.9 | 78 22 -21.7 -4.6 13 70 18100 255 13 12.6 3.4 | 82 14 -14.0 -2.1 14 50 20210 285 9 8.7 -2.3 | 67 20 -17.9 -7.8 Wind Parameters Mean winds (0-6000m): 228.5 at 36.2 knts Storm direction: 258.5 at 27.2 knts Shear (0-3000m) pos: 2.2 neg: 0.4 tot: 2.6 10-3/s Storm rel Dir Shear (0-3000m): 59.6 deg Storm rel helicity (0-3000m) pos: 53.1 neg: 0.0 tot: 53.1 m^2/s^2 ave: 17.7 10^-3 m/s^2 rel: 0.86 Storm rel vorticity (0-3000m) horiz: 2.9 stream: 2.5 10^-3/s Energy-Hel index: 0.00 Bulk Rich Number: 0.09 Bulk Shear: 24.71 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 ------------------------------------------------------------------------------- 500 228 23 134 14| 11.6 0.0 11.6| 41.1 0.0 41.1 82.3 0.97| 11.6 11.2 1000 230 26 148 13| 6.4 0.0 6.4| 46.6 0.0 46.6 46.6 0.90| 7.1 6.4 1500 232 27 154 13| 4.3 0.0 4.3| 47.4 0.0 47.4 31.6 0.87| 5.0 4.4 2000 233 27 157 12| 3.2 0.0 3.2| 47.4 0.0 47.4 23.7 0.87| 3.7 3.3 2500 233 28 158 12| 2.6 0.0 2.6| 47.4 0.0 47.4 19.0 0.87| 3.0 2.6 3000 233 28 160 12| 2.2 0.4 2.6| 53.1 0.0 53.1 17.7 0.86| 2.9 2.5 4000 233 30 167 13| 1.6 1.3 3.0| 70.9 0.0 70.9 17.7 0.74| 3.2 2.4 5000 231 33 175 15| 1.3 1.9 3.2| 83.4 0.0 83.4 16.7 0.62| 3.4 2.1 6000 228 36 182 19| 1.1 3.0 4.1| 85.9 -10.7 75.2 12.5 0.40| 4.3 1.7 Wrote GIF file: /home/apache/climate/data/raob//U2271/skewt/U2271.skewt.20251017.00.gif