UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025042500.upa.cvt Date: 0000Z 25 APR 25 Searching for U2820... Searching the city database file for: U2820 ... Date:0000Z 25 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 ------------------------------------------------------------------------------- SFC 1004 110 -0.3 -3.7 78 3.4 -1.6 90 3 272.5 273.0 271.4 280.4 2.89 1 1000 142 0.2 -3.3 77 3.5 -1.1 95 5 273.4 273.8 272.0 281.5 2.99 2 997 166 0.6 -2.9 77 3.5 -0.7 95 5 274.0 274.5 272.6 282.4 3.09 3 925 763 -3.7 -8.7 68 5.0 -5.3 100 17 275.5 275.9 272.0 281.5 2.14 4 850 1423 -9.3 -13.7 70 4.4 -10.5 95 11 276.4 276.7 271.6 280.9 1.56 5 778 2100 -14.5 -18.9 69 4.4 -15.4 24 7 277.9 278.1 271.8 281.1 1.10 6 766 2218 -13.9 -18.5 68 4.6 -14.9 12 7 279.8 280.0 273.0 283.2 1.16 7 719 2698 -14.7 -21.7 55 7.0 -16.2 321 4 284.0 284.2 275.0 286.9 0.94 8 700 2900 -15.7 -23.7 50 8.0 -17.3 300 3 285.1 285.2 275.4 287.6 0.81 9 585 4235 -21.7 -36.7 24 15.0 -23.5 271 18 293.1 293.2 278.6 294.1 0.28 10 500 5370 -30.1 -44.1 24 14.0 -31.2 245 31 296.3 296.4 280.0 296.9 0.15 11 438 6299 -38.1 -50.1 27 12.0 -38.7 242 36 297.6 297.7 280.4 298.0 0.09 12 400 6920 -42.3 -54.3 26 12.0 -42.7 240 40 300.0 300.0 281.4 300.2 0.06 13 327 8247 -51.5 -63.5 23 12.0 -51.7 240 54 305.1 305.1 283.5 305.2 0.02 14 309 8611 -53.7 -65.7 22 12.0 -53.9 240 58 307.0 307.1 284.2 307.1 0.02 15 300 8800 -53.9 -65.9 22 12.0 -54.1 245 58 309.4 309.4 285.1 309.4 0.02 16 297 8864 -53.9 -65.9 22 12.0 -54.1 246 57 310.3 310.3 285.4 310.3 0.02 17 250 9980 -49.9 -62.9 20 13.0 -50.2 255 40 331.9 331.9 292.3 332.0 0.03 18 225 10672 -48.3 -61.3 21 13.0 -48.7 257 38 344.5 344.5 295.4 344.7 0.04 19 200 11450 -47.5 -61.5 19 14.0 -48.0 260 35 357.6 357.6 298.2 357.8 0.05 20 174 12370 -47.7 -61.7 18 14.0 -48.3 371.8 371.8 300.9 372.0 0.05 TRP 309 8611 -53.7 -65.7 22 12.0 -53.9 240 58 307.0 307.1 284.2 307.1 0.02 WND Sounding variables and indices 1000-500 mb thick: 5228.00 m Freezing level: Surface below freezing Freezing level: 1001.60 mb = 129.23 m = 423.97 ft Freezing level: 986.95 mb = 249.39 m = 818.19 ft Wetbulb zero: Below ground Precipitable water: 0.25 inches Sfc-500 mean rel hum: 50.13 % Est. max temperature: 3.52 C = 38.34 F Sfc-Lift cond lev (LCL): 952.00 mb = 533.92 m = 1751.67 ft T: -2.05 C 700-500 lapse rate: 5.83 C/km ThetaE index: 1.59 C Layer 925.0- 778.0 mb Conv cond level (CCL): 875.63 mb = 1191.08 m = 3907.70 ft Mean mixing ratio: 2.52 g/kg Conv temperature: 3.27 C = 37.89 F Cap Strength: 10.83 C Lifted Index: 12.42 C Risk: None Lifted Index @300 mb: 19.56 C Lifted Index @700 mb: 5.61 C Showalter Index: 13.12 C Risk: None Total Totals Index: 37.20 C Risk: None Vertical Totals Index: 20.80 C Cross Totals Index: 16.40 C K Index: -0.90 Risk: None Sweat Index: 53.00 Risk: None Energy Index: 3.37 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 5.43 J/kg Max Up Vert Vel: 3.29 m/s Conv Inhibition (B-): 8595.93 J/kg Cap Strength: 12.32 C Lift Cond Lev (LCL): 892.40 mb = 1043.01 m = 3421.90 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 265 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 1004 110 90 3 -3.0 0.0 | 86 15 -14.7 -1.0 1 1000 142 95 5 -5.0 0.4 | 88 17 -16.7 -0.5 2 925 763 100 17 -16.7 3.0 | 94 28 -28.4 2.0 3 850 1423 95 11 -11.0 1.0 | 90 23 -22.6 -0.0 4 700 2900 300 3 2.6 -1.5 | 75 9 -9.1 -2.5 5 500 5370 245 31 28.1 13.1 | 234 20 16.4 12.1 6 400 6920 240 40 34.6 20.0 | 230 30 23.0 19.0 7 309 8611 240 58 50.2 29.0 | 234 48 38.5 28.0 8 300 8800 245 58 52.6 24.5 | 240 47 40.9 23.6 9 250 9980 255 40 38.6 10.4 | 251 29 27.0 9.4 10 200 11450 260 35 34.5 6.1 | 257 23 22.8 5.1 Wind Parameters Mean winds (0-6000m): 235.3 at 15.6 knts Storm direction: 265.3 at 11.7 knts Shear (0-3000m) pos: 1.9 neg: 3.3 tot: 5.2 10-3/s Storm rel Dir Shear (0-3000m): -21.8 deg Storm rel helicity (0-3000m) pos: 22.4 neg: -71.7 tot: -49.3 m^2/s^2 ave: -16.4 10^-3 m/s^2 rel: -0.20 Storm rel vorticity (0-3000m) horiz: 7.2 stream: -1.5 10^-3/s Energy-Hel index: 0.00 Bulk Rich Number: 0.08 Bulk Shear: 71.46 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 98 9 91 21| 11.4 0.0 11.4| 11.5 0.0 11.5 22.9 0.20| 11.4 2.2 1000 99 12 92 24| 5.7 0.2 5.9| 15.0 -6.2 8.8 8.8 0.11| 8.5 0.9 1500 97 12 91 24| 3.8 2.2 6.0| 15.0 -32.2 -17.2 -11.5 -0.11| 7.9 -0.9 2000 91 11 88 23| 2.9 3.6 6.5| 15.0 -64.9 -50.0 -25.0 -0.28| 8.1 -2.3 2500 91 10 88 22| 2.3 3.6 5.8| 17.1 -68.5 -51.4 -20.6 -0.24| 7.7 -1.9 3000 94 9 89 21| 1.9 3.3 5.2| 22.4 -71.7 -49.3 -16.4 -0.20| 7.2 -1.5 4000 93 10 89 21| 1.4 4.0 5.4| 22.4 -84.0 -61.5 -15.4 -0.34| 7.0 -2.4 5000 226 12 159 8| 1.1 4.2 5.4| 22.4-107.8 -85.3 -17.1 -0.39| 7.1 -2.8 6000 235 16 188 8| 1.0 4.1 5.0| 22.4-122.8-100.4 -16.7 -0.39| 6.6 -2.6 Wrote GIF file: /home/apache/climate/data/raob//U2820/skewt/U2820.skewt.20250425.00.gif