UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025041712.upa.cvt Date: 1200Z 17 APR 25 Searching for U4641... Searching the city database file for: U4641 ... Date:1200Z 17 APR 25 Station: U4641 WMO ident: 24641 Latitude: 63.77 Longitude: 121.62 ------------------------------------------------------------------------------- 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 62 195 3 SFC 994 110 0.8 -13.2 34 14.0 -3.3 195 3 274.4 274.7 270.1 278.4 1.39 2 966 340 1.2 -14.8 29 16.0 -3.4 205 10 277.1 277.3 271.5 280.7 1.25 3 925 687 -1.7 -18.7 26 17.0 -6.0 220 21 277.6 277.7 271.4 280.3 0.94 4 909 825 -3.1 -19.1 28 16.0 -7.1 222 21 277.5 277.7 271.3 280.3 0.93 5 850 1351 -8.1 -21.1 34 13.0 -10.9 230 23 277.7 277.8 271.2 280.1 0.83 6 770 2109 -14.5 -21.5 55 7.0 -15.9 250 22 278.7 278.9 271.9 281.4 0.89 7 700 2828 -16.7 -21.5 66 4.8 -17.7 270 21 284.0 284.2 275.0 286.9 0.98 8 682 3024 -16.7 -21.3 67 4.6 -17.7 271 23 286.1 286.3 276.3 289.2 1.02 9 667 3190 -17.9 -22.4 68 4.5 -18.8 272 25 286.6 286.8 276.4 289.5 0.95 10 591 4087 -22.5 -27.0 67 4.5 -23.2 278 35 291.3 291.5 278.4 293.6 0.71 11 500 5290 -32.5 -37.5 61 5.0 -32.9 285 48 293.4 293.5 278.8 294.4 0.30 12 451 6008 -37.3 -42.3 60 5.0 -37.6 290 49 296.2 296.2 280.0 296.9 0.20 13 400 6820 -45.7 -50.7 57 5.0 -45.9 295 50 295.6 295.6 279.5 295.9 0.09 14 389 7005 -47.9 -52.9 56 5.0 -48.0 296 50 295.1 295.1 279.3 295.3 0.07 15 344 7807 -53.9 -58.9 54 5.0 -54.0 300 52 297.5 297.5 280.3 297.6 0.04 16 334 7997 -52.7 -57.7 55 5.0 -52.8 296 51 301.7 301.7 282.1 301.8 0.05 17 300 8690 -53.3 -58.3 54 5.0 -53.4 280 46 310.2 310.2 285.5 310.4 0.05 18 273 9298 -52.7 -57.7 55 5.0 -52.8 283 44 319.6 319.6 288.7 319.8 0.06 19 250 9870 -49.7 -54.7 56 5.0 -49.9 285 42 332.2 332.2 292.4 332.5 0.09 20 220 10711 -48.1 -54.1 50 6.0 -48.4 279 36 347.0 347.0 296.1 347.5 0.11 21 200 11340 -48.7 -54.7 50 6.0 -49.0 275 31 355.7 355.7 297.9 356.1 0.11 22 150 13220 -50.1 -56.1 49 6.0 -50.4 265 29 383.7 383.8 302.9 384.3 0.13 23 103 15686 -49.3 -56.3 44 7.0 -49.8 242 23 428.8 428.9 308.8 429.8 0.18 24 100 15880 -50.9 -57.9 43 7.0 -51.4 240 23 429.4 429.4 308.9 430.2 0.15 25 97 16078 -51.9 -58.9 43 7.0 -52.4 239 23 431.2 431.2 309.0 431.9 0.14 26 72 18016 -49.7 -57.7 39 8.0 -50.5 231 23 474.2 474.3 313.1 475.5 0.22 27 70 18200 -50.5 -58.5 38 8.0 -51.2 230 23 476.3 476.4 313.2 477.5 0.20 28 50 20390 -50.7 -58.7 38 8.0 -51.7 240 21 524.0 524.1 316.6 525.8 0.28 29 30 23680 -53.7 -62.7 32 9.0 -54.9 255 17 598.2 598.3 320.6 600.3 0.28 30 29 23897 -54.5 -63.5 32 9.0 -55.6 256 17 601.9 602.0 320.8 603.8 0.26 31 20 26280 -53.1 -62.1 33 9.0 -54.9 265 15 673.6 673.8 323.7 677.4 0.45 32 15 28142 -52.3 -61.3 33 9.0 -54.6 734.1 734.4 325.7 740.1 0.67 33 12 29601 -48.3 -58.3 31 10.0 -52.0 796.6 797.2 327.4 808.6 1.22 34 10 30800 -49.5 -59.5 30 10.0 -53.3 834.8 835.4 328.4 847.8 1.26 TRP 344 7807 -53.9 -58.9 54 5.0 -54.0 300 52 297.5 297.5 280.3 297.6 0.04 WND Sounding variables and indices 1000-500 mb thick: 5228.00 m Freezing level: 949.03 mb = 483.59 m = 1586.55 ft Wetbulb zero: Below ground Precipitable water: 0.20 inches Sfc-500 mean rel hum: 53.76 % Est. max temperature: 4.11 C = 39.41 F Sfc-Lift cond lev (LCL): 797.97 mb = 1835.44 m = 6021.70 ft T: -12.19 C 700-500 lapse rate: 6.42 C/km ThetaE index: 0.57 C Layer 925.0- 770.0 mb Conv cond level (CCL): 600.35 mb = 3970.45 m = 13026.27 ft Mean mixing ratio: 1.10 g/kg Conv temperature: 17.07 C = 62.73 F Cap Strength: 10.64 C Lifted Index: 11.25 C Risk: None Lifted Index @300 mb: 21.33 C Lifted Index @700 mb: 5.84 C Showalter Index: 11.31 C Risk: None Total Totals Index: 35.80 C Risk: None Vertical Totals Index: 24.40 C Cross Totals Index: 11.40 C K Index: -1.50 Risk: None Sweat Index: 221.39 Risk: None Energy Index: 3.02 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 10.01 J/kg Max Up Vert Vel: 4.47 m/s Conv Inhibition (B-): 68263.65 J/kg Cap Strength: 11.24 C Lift Cond Lev (LCL): 734.35 mb = 2466.68 m = 8092.68 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 301 at 23 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 ---------------------------------------------------------- 0 994 110 195 3 0.8 2.9 | 128 24 -18.6 14.5 1 925 687 220 21 13.5 16.1 | 168 28 -5.9 27.7 2 850 1351 230 23 17.6 14.8 | 176 26 -1.8 26.4 3 700 2828 270 21 21.0 -0.0 | 188 12 1.6 11.6 4 500 5290 285 48 46.4 -12.4 | 272 27 27.0 -0.8 5 400 6820 295 50 45.3 -21.1 | 290 28 25.9 -9.5 6 344 7807 300 52 45.0 -26.0 | 299 29 25.6 -14.4 7 300 8690 280 46 45.3 -8.0 | 262 26 25.9 3.6 8 250 9870 285 42 40.6 -10.9 | 268 21 21.2 0.7 9 200 11340 275 31 30.9 -2.7 | 232 15 11.5 8.9 10 150 13220 265 29 28.9 2.5 | 214 17 9.5 14.1 11 100 15880 240 23 19.9 11.5 | 181 23 0.5 23.1 12 70 18200 230 23 17.6 14.8 | 176 26 -1.8 26.4 13 50 20390 240 21 18.2 10.5 | 177 22 -1.2 22.1 14 30 23680 255 17 16.4 4.4 | 169 16 -3.0 16.0 15 20 26280 265 15 14.9 1.3 | 161 14 -4.4 12.9 Wind Parameters Mean winds (0-6000m): 270.9 at 30.1 knts Storm direction: 300.9 at 22.6 knts Shear (0-3000m) pos: 4.0 neg: 0.0 tot: 4.0 10-3/s Storm rel Dir Shear (0-3000m): 75.5 deg Storm rel helicity (0-3000m) pos: 188.1 neg: 0.0 tot: 188.1 m^2/s^2 ave: 62.7 10^-3 m/s^2 rel: 0.71 Storm rel vorticity (0-3000m) horiz: 7.1 stream: 5.1 10^-3/s Energy-Hel index: 0.01 Bulk Rich Number: 0.12 Bulk Shear: 85.37 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 ------------------------------------------------------------------------------- 500 216 11 147 24| 16.3 0.0 16.3|106.8 0.0 106.8 213.5 0.97| 16.7 16.1 1000 221 16 159 25| 10.2 0.0 10.2|144.1 0.0 144.1 144.1 0.96| 11.1 10.7 1500 225 18 165 25| 7.0 0.0 7.0|162.8 0.0 162.8 108.5 0.90| 8.9 8.0 2000 230 19 169 24| 5.3 0.0 5.3|173.5 0.0 173.5 86.7 0.81| 8.0 6.5 2500 236 20 173 23| 4.2 0.0 4.2|177.9 0.0 177.9 71.1 0.72| 7.5 5.4 3000 242 20 176 21| 4.0 0.0 4.0|188.1 0.0 188.1 62.7 0.71| 7.1 5.1 4000 253 22 187 18| 4.5 0.0 4.5|224.9 0.0 224.9 56.2 0.75| 6.8 5.1 5000 264 26 205 16| 4.7 0.0 4.7|269.6 0.0 269.6 53.9 0.74| 6.7 4.9 6000 271 30 224 15| 4.2 0.0 4.2|312.4 0.0 312.4 52.1 0.75| 6.1 4.6 Wrote GIF file: /home/apache/climate/data/raob//U4641/skewt/U4641.skewt.20250417.12.gif