UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025042900.upa.cvt Date: 0000Z 29 APR 25 Searching for U2820... Searching the city database file for: U2820 ... Date:0000Z 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 40 225 7 SFC 992 106 5.0 2.2 82 2.8 3.7 225 7 278.8 279.6 277.3 291.2 4.52 2 960 374 6.6 2.7 76 3.9 4.7 237 13 283.0 283.9 279.8 296.5 4.84 3 925 679 5.8 1.6 74 4.2 3.8 250 19 285.2 286.0 280.6 298.3 4.64 4 903 876 4.8 0.2 72 4.6 2.7 251 16 286.2 286.9 280.6 298.4 4.29 5 850 1365 0.6 -5.4 64 6.0 -1.8 255 9 286.8 287.3 279.3 295.5 3.00 6 791 1936 -4.9 -9.8 68 4.9 -6.5 259 13 286.9 287.3 278.4 293.6 2.29 7 700 2890 -8.9 -12.8 73 3.9 -10.1 265 19 292.6 293.0 280.8 298.8 2.04 8 695 2946 -9.1 -13.0 73 3.9 -10.3 265 19 293.0 293.4 281.0 299.1 2.02 9 526 5034 -26.1 -30.4 67 4.3 -26.7 257 24 296.9 297.0 280.8 298.8 0.58 10 500 5400 -28.5 -33.2 64 4.7 -29.1 255 25 298.3 298.4 281.3 299.8 0.47 11 427 6510 -35.1 -42.1 49 7.0 -35.6 283 32 303.6 303.7 283.2 304.4 0.22 12 400 6960 -38.9 -46.9 43 8.0 -39.4 295 35 304.4 304.5 283.4 304.9 0.14 13 332 8207 -49.5 -57.5 39 8.0 -49.7 295 35 306.6 306.6 284.1 306.7 0.05 14 300 8860 -55.9 -63.9 36 8.0 -56.0 295 35 306.6 306.6 284.0 306.6 0.02 15 282 9250 -59.5 -67.5 35 8.0 -59.6 295 33 306.9 306.9 284.1 306.9 0.02 16 271 9499 -56.9 -64.9 36 8.0 -57.0 293 34 314.1 314.1 286.8 314.2 0.02 17 250 10010 -56.3 -64.3 36 8.0 -56.4 290 35 322.4 322.4 289.5 322.5 0.03 18 200 11440 -52.9 -61.9 33 9.0 -53.1 295 31 349.0 349.0 296.4 349.2 0.05 19 176 12270 -50.9 -59.9 34 9.0 -51.2 297 29 365.3 365.3 299.8 365.6 0.07 20 150 13310 -51.5 -61.5 29 10.0 -51.9 300 27 381.3 381.3 302.5 381.6 0.06 21 100 15930 -52.5 -63.5 25 11.0 -53.0 310 21 426.3 426.3 308.4 426.7 0.07 22 87 16824 -54.1 -65.1 25 11.0 -54.6 300 17 440.4 440.4 310.0 440.8 0.07 23 70 18220 -52.5 -64.5 22 12.0 -53.2 285 11 472.1 472.1 312.8 472.6 0.09 24 50 20390 -52.7 -64.7 22 12.0 -53.7 255 13 519.3 519.3 316.3 520.1 0.13 25 30 23670 -54.5 -67.5 19 13.0 -55.9 205 11 596.1 596.1 320.5 597.1 0.14 26 22 25663 -54.3 -68.3 16 14.0 -56.1 205 23 651.9 652.0 322.8 653.4 0.18 27 20 26280 -51.1 -65.1 17 14.0 -53.7 205 27 679.8 679.9 323.9 682.3 0.30 28 19 26614 -50.3 -64.3 18 14.0 -53.2 202 26 692.3 692.4 324.3 695.3 0.35 29 14 28610 -49.7 -63.7 18 14.0 -53.4 187 22 757.5 757.7 326.3 762.4 0.52 30 12 29628 -45.7 -60.7 17 15.0 -51.1 179 20 805.8 806.3 327.6 814.8 0.90 31 10 30850 -43.1 -59.1 16 16.0 -50.0 170 17 858.7 859.4 328.9 872.8 1.32 32 9.7 31055 -42.7 -58.7 16 16.0 -49.9 867.7 868.4 329.1 883.2 1.44 TRP 282 9250 -59.5 -67.5 35 8.0 -59.6 295 33 306.9 306.9 284.1 306.9 0.02 WND Sounding variables and indices 1000-500 mb thick: 5360.00 m Freezing level: 843.56 mb = 1427.33 m = 4682.78 ft Wetbulb zero: 871.24 mb = 1165.27 m = 3823.03 ft Precipitable water: 0.51 inches Sfc-500 mean rel hum: 70.20 % Est. max temperature: 12.98 C = 55.37 F Sfc-Lift cond lev (LCL): 950.10 mb = 459.33 m = 1506.98 ft T: 6.38 C 700-500 lapse rate: 7.81 C/km ThetaE index: 4.82 C Layer 850.0- 700.0 mb Conv cond level (CCL): 845.51 mb = 1407.11 m = 4616.43 ft Mean mixing ratio: 4.59 g/kg Conv temperature: 12.97 C = 55.35 F Cap Strength: 2.72 C Lifted Index: 2.83 C Risk: None Lifted Index @300 mb: 7.13 C Lifted Index @700 mb: 2.51 C Showalter Index: 3.68 C Risk: None Total Totals Index: 52.20 C Risk: Scattered heavy thunderstorms Vertical Totals Index: 29.10 C Cross Totals Index: 23.10 C K Index: 19.80 Risk: < 20 % chance of thunderstorms Sweat Index: 107.00 Risk: None Energy Index: 0.91 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 26.61 J/kg Max Up Vert Vel: 7.30 m/s Conv Inhibition (B-): 60247.15 J/kg Cap Strength: 2.73 C Lift Cond Lev (LCL): 884.60 mb = 1042.18 m = 3419.18 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 289 at 14 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 ---------------------------------------------------------- 0 992 106 225 7 4.9 4.9 | 139 13 -8.5 9.6 1 925 679 250 19 17.9 6.5 | 202 12 4.4 11.2 2 850 1365 255 9 8.7 2.3 | 146 8 -4.7 7.0 3 700 2890 265 19 18.9 1.7 | 221 8 5.5 6.3 4 500 5400 255 25 24.1 6.5 | 224 15 10.7 11.1 5 400 6960 295 35 31.7 -14.8 | 299 21 18.3 -10.1 6 300 8860 295 35 31.7 -14.8 | 299 21 18.3 -10.1 7 282 9250 295 33 29.9 -13.9 | 299 19 16.5 -9.3 8 250 10010 290 35 32.9 -12.0 | 291 21 19.4 -7.3 9 200 11440 295 31 28.1 -13.1 | 300 17 14.7 -8.4 10 150 13310 300 27 23.4 -13.5 | 312 13 9.9 -8.8 11 100 15930 310 21 16.1 -13.5 | 343 9 2.6 -8.8 12 70 18220 285 11 10.6 -2.8 | 123 3 -2.8 1.8 13 50 20390 255 13 12.6 3.4 | 174 8 -0.9 8.0 14 30 23670 205 11 4.6 10.0 | 149 17 -8.8 14.6 15 20 26280 205 27 11.4 24.5 | 176 29 -2.0 29.1 16 10 30850 170 17 -3.0 16.7 | 143 27 -16.4 21.4 Wind Parameters Mean winds (0-6000m): 259.1 at 19.0 knts Storm direction: 289.1 at 14.2 knts Shear (0-3000m) pos: 2.5 neg: 0.0 tot: 2.5 10-3/s Storm rel Dir Shear (0-3000m): 83.3 deg Storm rel helicity (0-3000m) pos: 60.7 neg: -20.1 tot: 40.6 m^2/s^2 ave: 13.5 10^-3 m/s^2 rel: 0.44 Storm rel vorticity (0-3000m) horiz: 5.7 stream: 2.5 10^-3/s Energy-Hel index: 0.01 Bulk Rich Number: 3.05 Bulk Shear: 8.74 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 ------------------------------------------------------------------------------- 500 242 12 166 11| 11.6 0.0 11.6| 36.4 0.0 36.4 72.8 0.99| 11.8 11.8 1000 247 14 178 10| 3.8 0.0 3.8| 41.3 -12.4 28.9 28.9 0.43| 9.8 4.2 1500 249 13 172 9| 2.0 0.0 2.0| 43.8 -20.1 23.7 15.8 0.25| 8.2 2.0 2000 251 13 171 9| 2.3 0.0 2.3| 50.2 -20.1 30.1 15.0 0.34| 7.0 2.4 2500 254 13 176 8| 2.6 0.0 2.6| 56.6 -20.1 36.5 14.6 0.41| 6.3 2.6 3000 257 14 182 8| 2.5 0.0 2.5| 60.7 -20.1 40.6 13.5 0.44| 5.7 2.5 4000 258 16 194 8| 1.9 0.4 2.3| 61.7 -20.1 41.6 10.4 0.41| 4.6 1.9 5000 258 17 203 9| 1.5 0.6 2.1| 61.9 -20.3 41.6 8.3 0.38| 4.0 1.5 6000 259 19 212 10| 2.0 0.5 2.4|101.9 -20.4 81.5 13.6 0.49| 4.2 2.1 Wrote GIF file: /home/apache/climate/data/raob//U2820/skewt/U2820.skewt.20250429.00.gif