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 U2820... Searching the city database file for: U2820 ... Date:1200Z 17 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 1005 113 17.2 2.2 36 15.0 9.6 90 5 289.9 290.7 282.5 302.8 4.46 1 1000 155 17.0 2.0 36 15.0 9.4 95 5 290.1 290.9 282.5 302.9 4.42 2 974 379 16.8 1.8 36 15.0 9.2 114 4 292.1 292.9 283.5 305.2 4.47 3 925 815 12.8 -0.2 41 13.0 6.5 150 3 292.4 293.1 283.1 304.3 4.07 4 850 1514 5.6 -4.4 49 10.0 1.3 180 1 292.0 292.6 282.0 301.6 3.24 5 784 2167 -0.9 -7.9 59 7.0 -3.6 168 3 291.9 292.4 281.3 299.9 2.69 6 700 3068 -2.7 -7.7 68 5.0 -4.7 150 5 299.5 300.1 284.9 308.8 3.06 7 699 3079 -2.7 -7.7 68 5.0 -4.7 150 5 299.6 300.2 284.9 309.0 3.06 8 672 3391 -3.1 -10.1 58 7.0 -5.8 157 5 302.6 303.0 285.6 310.8 2.64 9 628 3923 -6.5 -19.5 35 13.0 -10.3 169 5 304.6 304.8 284.9 308.8 1.30 10 555 4876 -12.9 -33.9 15 21.0 -16.7 191 5 308.0 308.1 285.1 309.3 0.39 11 500 5660 -19.9 -43.9 10 24.0 -22.7 210 5 308.8 308.8 285.1 309.3 0.16 12 480 5959 -22.5 -47.5 8 25.0 -25.0 222 6 309.2 309.2 285.2 309.6 0.11 13 436 6652 -29.1 -52.1 9 23.0 -30.7 250 10 309.4 309.5 285.2 309.7 0.07 14 400 7260 -32.5 -52.5 12 20.0 -33.7 275 13 312.7 312.8 286.4 313.0 0.07 15 336 8469 -40.7 -61.7 9 21.0 -41.4 302 19 317.5 317.5 288.0 317.6 0.03 16 300 9230 -47.1 -69.1 6 22.0 -47.5 320 23 319.0 319.0 288.4 319.0 0.01 17 250 10410 -57.5 -78.5 5 21.0 -57.6 320 29 320.6 320.6 288.9 320.6 0.00 18 227 11010 -62.5 -82.5 5 20.0 -62.6 315 31 321.9 321.9 289.3 321.9 0.00 19 211 11464 -58.3 -79.3 5 21.0 -58.5 301 30 335.3 335.3 293.2 335.3 0.00 20 200 11800 -58.7 -79.7 5 21.0 -58.9 290 29 339.8 339.8 294.3 339.8 0.00 21 150 13640 -52.5 -74.5 5 22.0 -52.9 300 35 379.6 379.6 302.2 379.7 0.01 22 142 13994 -51.9 -73.9 5 22.0 -52.4 301 35 386.7 386.7 303.3 386.7 0.01 23 102 16114 -55.9 -76.9 6 21.0 -56.3 305 33 417.3 417.4 307.4 417.4 0.01 24 100 16240 -55.1 -77.1 5 22.0 -55.6 305 33 421.3 421.3 307.9 421.3 0.01 25 70 18530 -53.5 -75.5 5 22.0 -54.4 325 21 469.9 469.9 312.7 470.0 0.02 26 54 20216 -50.5 -72.5 6 22.0 -52.0 321 13 513.0 513.1 315.9 513.3 0.04 27 50 20720 -50.3 -72.3 6 22.0 -51.9 320 11 524.9 525.0 316.6 525.2 0.04 28 35 23046 -50.1 -73.1 5 23.0 -52.2 330 8 581.8 581.9 319.8 582.2 0.06 29 30 24060 -46.7 -69.7 6 23.0 -50.0 335 7 617.3 617.4 321.4 618.1 0.11 30 28 24518 -45.7 -68.7 6 23.0 -49.4 329 8 632.4 632.5 322.0 633.4 0.13 31 20 26750 -47.5 -70.5 5 23.0 -51.5 300 11 690.8 690.8 324.1 692.0 0.14 32 14 29095 -49.9 -72.9 5 23.0 -54.2 756.8 756.9 326.1 758.2 0.14 TRP 227 11010 -62.5 -82.5 5 20.0 -62.6 315 31 321.9 321.9 289.3 321.9 0.00 WND Sounding variables and indices 1000-500 mb thick: 5505.00 m Freezing level: 793.14 mb = 2076.32 m = 6811.98 ft Wetbulb zero: 832.24 mb = 1684.53 m = 5526.61 ft Precipitable water: 0.53 inches Sfc-500 mean rel hum: 41.03 % Est. max temperature: 19.31 C = 66.76 F Sfc-Lift cond lev (LCL): 802.14 mb = 1982.02 m = 6502.62 ft T: 0.94 C 700-500 lapse rate: 6.64 C/km ThetaE index: 5.30 C Layer 925.0- 700.0 mb Conv cond level (CCL): 656.88 mb = 3569.69 m = 11711.45 ft Mean mixing ratio: 4.26 g/kg Conv temperature: 30.53 C = 86.96 F Cap Strength: 6.94 C Lifted Index: 6.10 C Risk: None Lifted Index @300 mb: 10.54 C Lifted Index @700 mb: 4.34 C Showalter Index: 7.97 C Risk: None Total Totals Index: 41.00 C Risk: None Vertical Totals Index: 25.50 C Cross Totals Index: 15.50 C K Index: 16.10 Risk: < 20 % chance of thunderstorms Sweat Index: 7.00 Risk: None Energy Index: 1.70 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 8.37 J/kg Max Up Vert Vel: 4.09 m/s Conv Inhibition (B-): 49250.95 J/kg Cap Strength: 6.88 C Lift Cond Lev (LCL): 771.82 mb = 2291.19 m = 7516.94 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 202 at 3 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 1005 113 90 5 -5.0 0.0 | 65 7 -6.2 -2.9 1 1000 155 95 5 -5.0 0.4 | 68 7 -6.1 -2.4 2 925 815 150 3 -1.5 2.6 | 84 3 -2.7 -0.3 3 850 1514 180 1 0.0 1.0 | 32 2 -1.2 -1.9 4 700 3068 150 5 -2.5 4.3 | 112 4 -3.7 1.5 5 500 5660 210 5 2.5 4.3 | 223 2 1.3 1.5 6 400 7260 275 13 13.0 -1.1 | 289 12 11.8 -4.0 7 300 9230 320 23 14.8 -17.6 | 326 25 13.6 -20.5 8 250 10410 320 29 18.6 -22.2 | 325 31 17.5 -25.1 9 227 11010 315 31 21.9 -21.9 | 320 32 20.8 -24.8 10 200 11800 290 29 27.3 -9.9 | 296 29 26.1 -12.8 11 150 13640 300 35 30.3 -17.5 | 305 36 29.1 -20.4 12 100 16240 305 33 27.0 -18.9 | 310 34 25.9 -21.8 13 70 18530 325 21 12.0 -17.2 | 332 23 10.9 -20.1 14 50 20720 320 11 7.1 -8.4 | 332 13 5.9 -11.3 15 30 24060 335 7 3.0 -6.3 | 349 9 1.8 -9.2 16 20 26750 300 11 9.5 -5.5 | 315 12 8.4 -8.4 Wind Parameters Mean winds (0-6000m): 172.0 at 4.1 knts Storm direction: 202.0 at 3.1 knts Shear (0-3000m) pos: 0.9 neg: 0.7 tot: 1.5 10-3/s Storm rel Dir Shear (0-3000m): 47.7 deg Storm rel helicity (0-3000m) pos: 4.4 neg: -1.1 tot: 3.3 m^2/s^2 ave: 1.1 10^-3 m/s^2 rel: 0.25 Storm rel vorticity (0-3000m) horiz: 1.9 stream: 0.5 10^-3/s Energy-Hel index: 0.00 Bulk Rich Number: 3.20 Bulk Shear: 2.61 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 ------------------------------------------------------------------------------- 500 109 4 75 5| 3.5 0.0 3.5| 2.8 0.0 2.8 5.6 0.51| 3.7 1.9 1000 123 4 78 4| 2.5 0.0 2.5| 2.9 -0.5 2.4 2.4 0.20| 3.0 0.6 1500 130 3 73 4| 1.8 0.0 1.8| 2.9 -1.1 1.9 1.3 0.02| 2.5 0.1 2000 138 3 73 3| 1.3 0.3 1.7| 3.5 -1.1 2.4 1.2 0.16| 2.2 0.4 2500 143 3 76 3| 1.1 0.6 1.6| 4.1 -1.1 3.0 1.2 0.24| 2.1 0.5 3000 144 3 82 3| 0.9 0.7 1.5| 4.4 -1.1 3.3 1.1 0.25| 1.9 0.5 4000 151 4 94 3| 0.9 0.5 1.4| 5.8 -1.1 4.7 1.2 0.33| 1.7 0.6 5000 160 4 106 3| 0.9 0.4 1.3| 6.9 -1.1 5.8 1.2 0.41| 1.6 0.6 6000 172 4 125 2| 1.1 0.3 1.4| 8.6 -1.1 7.5 1.3 0.45| 1.7 0.7 Wrote GIF file: /home/apache/climate/data/raob//U2820/skewt/U2820.skewt.20250417.12.gif