UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025042100.upa.cvt Date: 0000Z 21 APR 25 Searching for U2820... Searching the city database file for: U2820 ... Date:0000Z 21 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 81 90 3 SFC 996 113 2.6 2.3 98 0.3 2.5 90 3 276.1 276.8 275.8 288.4 4.53 2 986 195 2.0 2.0 100 0.0 2.0 93 4 276.3 277.0 275.9 288.4 4.48 3 946 529 1.6 1.6 100 0.0 1.6 107 6 279.1 279.9 277.4 291.6 4.54 4 941 571 0.4 0.4 100 0.0 0.4 109 6 278.3 279.1 276.6 289.9 4.18 5 925 709 0.8 0.8 100 0.0 0.8 115 7 280.1 280.9 277.8 292.2 4.38 6 910 841 1.8 1.8 100 0.0 1.8 136 7 282.5 283.3 279.4 295.8 4.79 7 871 1194 0.8 0.8 100 0.0 0.8 193 6 285.0 285.8 280.5 298.1 4.65 8 850 1391 2.4 2.4 100 0.0 2.4 225 5 288.7 289.6 283.0 303.9 5.35 9 839 1494 2.8 2.8 100 0.0 2.8 225 6 290.2 291.1 283.8 306.1 5.58 10 500 5430 -20.3 -26.3 59 6.0 -21.5 245 29 308.3 308.5 285.8 311.3 0.89 11 493 5534 -22.1 -28.1 58 6.0 -23.2 245 30 307.3 307.5 285.3 309.9 0.77 12 438 6395 -28.1 -36.1 46 8.0 -29.1 248 37 310.3 310.4 285.9 311.7 0.40 13 400 7040 -33.9 -42.9 40 9.0 -34.7 250 42 310.9 311.0 285.9 311.7 0.22 14 320 8556 -46.7 -55.7 35 9.0 -47.0 246 47 313.7 313.7 286.7 313.9 0.06 15 300 8980 -49.3 -59.3 30 10.0 -49.6 245 48 315.9 315.9 287.4 316.0 0.04 16 266 9756 -54.9 -64.9 28 10.0 -55.1 245 48 318.7 318.7 288.3 318.8 0.02 17 260 9901 -55.3 -65.3 28 10.0 -55.5 245 48 320.2 320.2 288.8 320.3 0.02 18 254 10049 -56.1 -66.1 27 10.0 -56.2 245 48 321.2 321.2 289.1 321.3 0.02 19 250 10150 -56.1 -66.1 27 10.0 -56.2 245 46 322.7 322.7 289.6 322.7 0.02 20 217 11057 -56.9 -66.9 27 10.0 -57.1 248 41 334.8 334.8 293.0 334.8 0.02 21 200 11580 -54.9 -64.9 28 10.0 -55.1 250 38 345.8 345.8 295.7 346.0 0.03 22 189 11941 -52.7 -62.7 29 10.0 -52.9 254 37 355.0 355.0 297.7 355.2 0.04 23 150 13430 -51.7 -61.7 29 10.0 -52.1 270 33 381.0 381.0 302.5 381.3 0.06 24 100 16040 -54.3 -64.3 28 10.0 -54.7 280 27 422.8 422.8 308.1 423.2 0.07 25 70 18320 -54.3 -64.3 28 10.0 -54.9 285 23 468.2 468.2 312.5 468.8 0.10 26 50 20460 -54.5 -65.5 25 11.0 -55.3 305 19 515.0 515.1 316.0 515.8 0.11 27 44 21275 -56.3 -67.3 24 11.0 -57.1 529.8 529.9 316.9 530.5 0.10 TRP 254 10049 -56.1 -66.1 27 10.0 -56.2 245 48 321.2 321.2 289.1 321.3 0.02 WND Sounding variables and indices 1000-500 mb thick: 5349.00 m Freezing level: 797.91 mb = 1970.97 m = 6466.35 ft Wetbulb zero: 800.28 mb = 1853.12 m = 6079.71 ft Precipitable water: 0.76 inches Sfc-500 mean rel hum: 84.47 % Est. max temperature: 15.72 C = 60.30 F Sfc-Lift cond lev (LCL): 991.28 mb = 151.76 m = 497.90 ft T: 2.32 C 700-500 lapse rate: 5.87 C/km ThetaE index: 1.78 C Layer 941.0- 925.0 mb Conv cond level (CCL): 988.03 mb = 178.28 m = 584.91 ft Mean mixing ratio: 4.51 g/kg Conv temperature: 2.75 C = 36.96 F Cap Strength: 7.35 C Lifted Index: 14.72 C Risk: None Lifted Index @300 mb: 17.24 C Lifted Index @700 mb: 9.29 C Showalter Index: 5.99 C Risk: None Total Totals Index: 45.40 C Risk: Scattered moderate thunderstorms Vertical Totals Index: 22.70 C Cross Totals Index: 22.70 C K Index: 23.00 Risk: 20-40 % chance of thunderstorms Sweat Index: 67.80 Risk: None Energy Index: 1.30 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 27.32 J/kg Max Up Vert Vel: 7.39 m/s Conv Inhibition (B-): 0.00 J/kg Cap Strength: 14.56 C Lift Cond Lev (LCL): 944.19 mb = 544.18 m = 1785.36 ft Lev Free Conv (LFC): 939.19 mb = 586.84 m = 1925.30 ft Equ Level (EL): 929.19 mb = 672.76 m = 2207.18 ft B at Equ Level: 27.27 J/kg Max Parcel Lev (MPL): 879.19 mb = 1118.59 m = 3669.87 ft Wind level data Storm motion: 270 at 12 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 ---------------------------------------------------------- 0 996 113 90 3 -3.0 0.0 | 90 15 -15.3 0.1 1 925 709 115 7 -6.3 3.0 | 99 19 -18.6 3.0 2 850 1391 225 5 3.5 3.5 | 112 9 -8.7 3.6 3 500 5430 245 29 26.3 12.3 | 229 19 14.0 12.3 4 400 7040 250 42 39.5 14.4 | 242 31 27.2 14.4 5 300 8980 245 48 43.5 20.3 | 237 37 31.2 20.4 6 254 10049 245 48 43.5 20.3 | 237 37 31.2 20.4 7 250 10150 245 46 41.7 19.4 | 236 35 29.4 19.5 8 200 11580 250 38 35.7 13.0 | 241 27 23.4 13.1 9 150 13430 270 33 33.0 -0.0 | 270 21 20.7 0.1 10 100 16040 280 27 26.6 -4.7 | 288 15 14.3 -4.6 11 70 18320 285 23 22.2 -6.0 | 301 12 10.0 -5.9 12 50 20460 305 19 15.6 -10.9 | 343 11 3.3 -10.8 Wind Parameters Mean winds (0-6000m): 240.3 at 16.3 knts Storm direction: 270.3 at 12.3 knts Shear (0-3000m) pos: 3.4 neg: 0.0 tot: 3.4 10-3/s Storm rel Dir Shear (0-3000m): -45.2 deg Storm rel helicity (0-3000m) pos: 34.9 neg: -0.7 tot: 34.1 m^2/s^2 ave: 28.4 10^-3 m/s^2 rel: 0.50 Storm rel vorticity (0-3000m) horiz: 2.6 stream: 1.3 10^-3/s Energy-Hel index: 0.01 Bulk Rich Number: 0.52 Bulk Shear: 52.35 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 ------------------------------------------------------------------------------- 500 106 5 95 17| 3.8 0.0 3.8| 9.5 0.0 9.5 19.1 0.56| 3.9 2.2 1000 123 6 100 17| 3.4 0.0 3.4| 34.2 0.0 34.2 34.2 0.63| 6.1 3.9 1500 NO DATA | | | 2000 NO DATA | | | 2500 NO DATA | | | 3000 NO DATA | | | 4000 NO DATA | | | 5000 NO DATA | | | 6000 240 16 193 8| 3.3 0.0 3.3| 95.7 -0.7 95.0 50.0 0.77| 4.4 3.4 Wrote GIF file: /home/apache/climate/data/raob//U2820/skewt/U2820.skewt.20250421.00.gif