UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025042912.upa.cvt Date: 1200Z 29 APR 25 Searching for U2820... Searching the city database file for: U2820 ... Date:1200Z 29 APR 25 Station: U2820 WMO ident: 22820 Latitude: 61.82 Longitude: 34.27 ------------------------------------------------------------------------------- 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 26 SFC 990 107 2.6 1.7 94 0.9 2.2 360 7 276.5 277.3 275.9 288.4 4.37 2 952 423 0.0 -2.0 86 2.0 -0.8 12 15 277.0 277.6 274.9 286.6 3.46 3 926 644 -0.5 -2.4 87 1.9 -1.3 20 21 278.7 279.3 275.8 288.3 3.46 4 925 653 -0.5 -2.4 87 1.9 -1.3 20 21 278.8 279.4 275.8 288.4 3.46 5 905 828 0.8 -0.9 88 1.7 0.1 19 19 281.9 282.6 278.1 293.0 3.95 6 850 1330 -1.5 -3.0 89 1.5 -2.1 15 13 284.6 285.2 279.0 294.8 3.60 7 792 1891 -3.5 -4.7 91 1.2 -4.0 6 12 288.2 288.8 280.5 298.1 3.40 8 700 2856 -9.5 -12.0 82 2.5 -10.3 350 9 292.0 292.4 280.7 298.5 2.17 9 687 3000 -10.3 -13.0 81 2.7 -11.1 347 9 292.6 293.0 280.8 298.8 2.04 10 519 5091 -26.1 -31.1 63 5.0 -26.8 306 16 298.0 298.1 281.3 299.8 0.55 11 500 5360 -26.9 -32.9 57 6.0 -27.7 300 17 300.2 300.3 282.1 301.8 0.48 12 460 5957 -31.3 -37.3 55 6.0 -31.9 298 18 302.0 302.1 282.7 303.1 0.34 13 400 6930 -39.9 -46.9 47 7.0 -40.3 295 21 303.1 303.2 282.8 303.6 0.14 14 345 7918 -48.7 -55.7 44 7.0 -48.9 295 21 304.3 304.3 283.2 304.5 0.06 15 300 8820 -55.3 -63.3 36 8.0 -55.4 295 21 307.4 307.4 284.4 307.5 0.03 16 296 8906 -55.9 -63.9 36 8.0 -56.0 295 21 307.7 307.7 284.5 307.8 0.02 17 291 9014 -55.3 -63.3 36 8.0 -55.4 294 22 310.1 310.1 285.4 310.2 0.03 18 250 9990 -52.3 -61.3 33 9.0 -52.5 290 27 328.3 328.3 291.3 328.5 0.04 19 239 10281 -51.1 -59.1 38 8.0 -51.3 291 27 334.4 334.4 293.0 334.6 0.06 20 200 11440 -50.1 -59.1 34 9.0 -50.4 295 25 353.4 353.4 297.4 353.7 0.07 21 173 12388 -49.3 -59.3 30 10.0 -49.7 295 26 369.7 369.7 300.6 370.1 0.07 22 150 13320 -50.1 -60.1 30 10.0 -50.5 295 27 383.7 383.8 302.9 384.1 0.08 23 100 15960 -52.3 -64.3 22 12.0 -52.9 300 23 426.7 426.7 308.5 427.0 0.07 24 70 18270 -51.3 -64.3 20 13.0 -52.2 290 15 474.6 474.7 313.1 475.2 0.10 25 50 20460 -50.9 -64.9 17 14.0 -52.2 275 7 523.5 523.6 316.6 524.3 0.12 26 30 23770 -51.9 -67.9 13 16.0 -53.8 215 15 603.2 603.2 320.8 604.2 0.14 27 23 25502 -51.1 -68.1 11 17.0 -53.7 215 20 653.1 653.2 322.9 654.5 0.17 28 20 26420 -48.1 -66.1 11 18.0 -51.7 215 23 688.9 689.1 324.1 691.2 0.26 29 13 29284 -44.3 -64.3 9 20.0 -50.5 792.4 792.7 327.2 797.6 0.52 TRP 296 8906 -55.9 -63.9 36 8.0 -56.0 295 21 307.7 307.7 284.5 307.8 0.02 WND Sounding variables and indices 1000-500 mb thick: 5334.00 m Freezing level: 952.00 mb = 422.59 m = 1386.43 ft Freezing level: 917.31 mb = 720.41 m = 2363.51 ft Freezing level: 885.87 mb = 1002.78 m = 3289.91 ft Wetbulb zero: 962.18 mb = 336.92 m = 1105.36 ft Precipitable water: 0.52 inches Sfc-500 mean rel hum: 79.71 % Est. max temperature: 11.22 C = 52.19 F Sfc-Lift cond lev (LCL): 976.31 mb = 219.53 m = 720.22 ft T: 1.67 C 700-500 lapse rate: 6.95 C/km ThetaE index: 1.88 C Layer 952.0- 926.0 mb Conv cond level (CCL): 795.17 mb = 1859.06 m = 6099.21 ft Mean mixing ratio: 3.75 g/kg Conv temperature: 14.07 C = 57.32 F Cap Strength: 8.51 C Lifted Index: 10.05 C Risk: None Lifted Index @300 mb: 13.06 C Lifted Index @700 mb: 6.77 C Showalter Index: 5.78 C Risk: None Total Totals Index: 49.30 C Risk: Scattered heavy thunderstorms Vertical Totals Index: 25.40 C Cross Totals Index: 23.90 C K Index: 19.90 Risk: < 20 % chance of thunderstorms Sweat Index: 49.00 Risk: None Energy Index: 1.43 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 27.43 J/kg Max Up Vert Vel: 7.41 m/s Conv Inhibition (B-): 65762.97 J/kg Cap Strength: 9.66 C Lift Cond Lev (LCL): 914.62 mb = 743.47 m = 2439.18 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 7 at 10 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 ---------------------------------------------------------- 0 990 107 360 7 -0.0 -7.0 | 202 3 1.3 3.2 1 925 653 20 21 -7.2 -19.7 | 32 11 -5.9 -9.6 2 850 1330 15 13 -3.4 -12.6 | 41 3 -2.1 -2.4 3 700 2856 350 9 1.6 -8.9 | 245 3 2.8 1.3 4 500 5360 300 17 14.7 -8.5 | 264 16 16.0 1.7 5 400 6930 295 21 19.0 -8.9 | 266 20 20.3 1.3 6 300 8820 295 21 19.0 -8.9 | 266 20 20.3 1.3 7 296 8906 295 21 19.0 -8.9 | 266 20 20.3 1.3 8 250 9990 290 27 25.4 -9.2 | 268 27 26.6 0.9 9 200 11440 295 25 22.7 -10.6 | 271 24 23.9 -0.4 10 150 13320 295 27 24.5 -11.4 | 273 26 25.7 -1.2 11 100 15960 300 23 19.9 -11.5 | 274 21 21.2 -1.3 12 70 18270 290 15 14.1 -5.1 | 252 16 15.3 5.0 13 50 20460 275 7 7.0 -0.6 | 221 13 8.2 9.6 14 30 23770 215 15 8.6 12.3 | 204 25 9.9 22.5 15 20 26420 215 23 13.2 18.8 | 206 32 14.4 29.0 Wind Parameters Mean winds (0-6000m): 337.0 at 13.7 knts Storm direction: 7.0 at 10.2 knts Shear (0-3000m) pos: 2.3 neg: 2.2 tot: 4.5 10-3/s Storm rel Dir Shear (0-3000m): 58.0 deg Storm rel helicity (0-3000m) pos: 6.0 neg: -2.0 tot: 4.0 m^2/s^2 ave: 1.3 10^-3 m/s^2 rel: 0.13 Storm rel vorticity (0-3000m) horiz: 5.1 stream: 0.6 10^-3/s Energy-Hel index: 0.00 Bulk Rich Number: 2.75 Bulk Shear: 9.96 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 14 13 37 3| 13.8 0.0 13.8| 3.3 0.0 3.3 6.7 0.43| 15.0 6.4 1000 17 16 34 6| 6.9 2.2 9.1| 4.7 0.0 4.7 4.7 0.34| 10.3 3.5 1500 16 15 34 5| 4.6 2.7 7.3| 5.3 -0.4 4.9 3.3 0.28| 8.2 2.3 2000 14 14 32 4| 3.4 2.5 6.0| 5.3 -1.1 4.2 2.1 0.19| 6.7 1.3 2500 12 13 28 3| 2.8 2.4 5.2| 5.3 -1.7 3.6 1.4 0.12| 5.8 0.7 3000 10 13 21 3| 2.3 2.2 4.5| 6.0 -2.0 4.0 1.3 0.13| 5.1 0.6 4000 2 12 338 2| 1.7 2.1 3.8| 7.6 -2.0 5.6 1.4 0.14| 4.5 0.6 5000 349 13 304 4| 1.4 2.2 3.6| 7.6 -6.6 1.0 0.2 0.09| 4.2 0.4 6000 337 14 290 7| 1.1 2.2 3.3| 9.4 -9.2 0.3 0.0 0.07| 3.8 0.3 Wrote GIF file: /home/apache/climate/data/raob//U2820/skewt/U2820.skewt.20250429.12.gif