UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025101200.upa.cvt Date: 0000Z 12 OCT 25 Searching for U2820... Searching the city database file for: U2820 ... Date:0000Z 12 OCT 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 -23 SFC 984 109 4.8 3.8 93 1.0 4.3 250 3 279.2 280.1 278.3 293.2 5.10 2 925 610 1.2 -0.2 90 1.4 0.6 290 23 280.5 281.2 277.6 291.9 4.07 3 850 1286 -2.9 -4.4 89 1.5 -3.5 285 25 283.1 283.7 277.8 292.3 3.24 4 843 1351 -3.3 -4.7 90 1.4 -3.8 285 25 283.4 283.9 277.9 292.4 3.20 5 804 1725 -4.1 -5.7 89 1.6 -4.7 282 23 286.4 286.9 279.2 295.3 3.10 6 700 2806 -9.7 -13.3 75 3.6 -10.8 275 17 291.7 292.1 280.3 297.6 1.96 7 689 2928 -10.7 -14.4 74 3.7 -11.8 274 17 292.0 292.3 280.2 297.5 1.82 8 578 4249 -20.5 -23.3 78 2.8 -21.1 266 14 295.5 295.7 280.8 298.7 1.01 9 500 5300 -29.7 -32.3 78 2.6 -30.0 260 11 296.8 296.9 280.7 298.5 0.51 10 415 6599 -40.5 -42.4 82 1.9 -40.6 277 18 299.2 299.2 281.3 299.9 0.22 11 400 6850 -41.1 -43.0 82 1.9 -41.2 280 19 301.6 301.6 282.3 302.3 0.21 12 399 6867 -41.1 -43.0 82 1.9 -41.2 280 19 301.8 301.8 282.4 302.5 0.21 13 372 7340 -43.5 -46.4 73 2.9 -43.6 285 15 304.7 304.7 283.5 305.3 0.16 14 363 7505 -42.5 -45.7 71 3.2 -42.7 276 15 308.2 308.2 284.9 308.8 0.18 15 300 8790 -43.1 -51.1 41 8.0 -43.5 205 15 324.6 324.6 290.3 325.1 0.12 16 250 10020 -41.3 -56.3 18 15.0 -42.1 235 17 344.7 344.7 295.5 345.0 0.07 17 241 10270 -41.5 -57.5 16 16.0 -42.3 240 16 348.0 348.0 296.3 348.3 0.07 18 222 10827 -44.1 -62.1 12 18.0 -44.8 251 15 352.3 352.3 297.1 352.4 0.04 19 200 11530 -44.1 -64.1 9 20.0 -44.9 265 13 362.9 362.9 299.3 363.1 0.03 20 150 13450 -46.3 -70.3 5 24.0 -47.2 265 23 390.3 390.3 303.8 390.4 0.02 21 120 14924 -48.9 -73.9 4 25.0 -49.8 276 16 411.2 411.2 306.7 411.3 0.01 22 104 15850 -55.7 -79.7 3 24.0 -56.2 283 12 415.4 415.4 307.2 415.5 0.01 23 100 16100 -55.1 -79.1 4 24.0 -55.6 285 11 421.3 421.3 307.9 421.3 0.01 24 94 16495 -53.5 -77.5 4 24.0 -54.2 288 11 431.9 431.9 309.0 432.0 0.01 25 86 17062 -56.9 -79.9 4 23.0 -57.4 293 11 436.2 436.2 309.5 436.2 0.01 26 85 17135 -57.1 -80.1 4 23.0 -57.6 294 11 437.3 437.3 309.6 437.3 0.01 27 70 18360 -57.5 -80.5 4 23.0 -58.0 305 11 461.4 461.4 311.9 461.4 0.01 28 50 20470 -60.5 -83.5 3 23.0 -61.0 340 7 500.9 500.9 315.0 501.0 0.01 29 31 23428 -62.9 -84.9 4 22.0 -63.5 3 16 567.8 567.8 319.0 567.9 0.01 30 30 23630 -62.1 -84.1 4 22.0 -62.8 5 17 575.3 575.3 319.5 575.4 0.01 31 20 26130 -62.5 -84.5 4 22.0 -63.4 355 11 644.9 644.9 322.5 645.0 0.02 32 18 26776 -64.9 -86.9 3 22.0 -65.7 657.0 657.0 323.0 657.1 0.01 33 13 28780 -60.9 -83.9 3 23.0 -62.6 735.0 735.0 325.5 735.2 0.03 TRP 372 7340 -43.5 -46.4 73 2.9 -43.6 285 15 304.7 304.7 283.5 305.3 0.16 WND Sounding variables and indices 1000-500 mb thick: 5323.00 m Freezing level: 903.05 mb = 807.85 m = 2650.41 ft Wetbulb zero: 913.92 mb = 706.31 m = 2317.25 ft Precipitable water: 0.50 inches Sfc-500 mean rel hum: 81.93 % Est. max temperature: 9.58 C = 49.25 F Sfc-Lift cond lev (LCL): 969.02 mb = 233.06 m = 764.64 ft T: 3.91 C 700-500 lapse rate: 8.02 C/km ThetaE index: 1.38 C Layer 925.0- 850.0 mb Conv cond level (CCL): 905.08 mb = 784.06 m = 2572.36 ft Mean mixing ratio: 4.27 g/kg Conv temperature: 6.76 C = 44.16 F Cap Strength: 4.97 C Lifted Index: 4.79 C Risk: None Lifted Index @300 mb: 22.97 C Lifted Index @700 mb: 4.40 C Showalter Index: 4.79 C Risk: None Total Totals Index: 52.10 C Risk: Scattered heavy thunderstorms Vertical Totals Index: 26.80 C Cross Totals Index: 25.30 C K Index: 18.80 Risk: < 20 % chance of thunderstorms Sweat Index: 123.00 Risk: None Energy Index: 1.29 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 10.07 J/kg Max Up Vert Vel: 4.49 m/s Conv Inhibition (B-): 59415.65 J/kg Cap Strength: 4.96 C Lift Cond Lev (LCL): 915.27 mb = 694.54 m = 2278.66 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 306 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 ---------------------------------------------------------- 0 984 109 250 3 2.8 1.0 | 139 11 -7.2 8.4 1 925 610 290 23 21.6 -7.9 | 272 12 11.6 -0.5 2 850 1286 285 25 24.1 -6.5 | 266 14 14.1 0.9 3 700 2806 275 17 16.9 -1.5 | 230 9 6.9 5.9 4 500 5300 260 11 10.8 1.9 | 185 9 0.8 9.3 5 400 6850 280 19 18.7 -3.3 | 245 10 8.7 4.1 6 372 7340 285 15 14.5 -3.9 | 232 6 4.5 3.5 7 300 8790 205 15 6.3 13.6 | 170 21 -3.7 21.0 8 250 10020 235 17 13.9 9.8 | 193 18 3.9 17.1 9 200 11530 265 13 13.0 1.1 | 199 9 2.9 8.5 10 150 13450 265 23 22.9 2.0 | 234 16 12.9 9.4 11 100 16100 285 11 10.6 -2.8 | 188 5 0.6 4.5 12 70 18360 305 11 9.0 -6.3 | 136 1 -1.0 1.1 13 50 20470 340 7 2.4 -6.6 | 96 8 -7.6 0.8 14 30 23630 5 17 -1.5 -16.9 | 50 15 -11.5 -9.6 15 20 26130 355 11 1.0 -11.0 | 68 10 -9.1 -3.6 Wind Parameters Mean winds (0-6000m): 276.3 at 16.6 knts Storm direction: 306.3 at 12.4 knts Shear (0-3000m) pos: 3.6 neg: 1.5 tot: 5.1 10-3/s Storm rel Dir Shear (0-3000m): 84.5 deg Storm rel helicity (0-3000m) pos: 49.2 neg: -28.0 tot: 21.1 m^2/s^2 ave: 7.0 10^-3 m/s^2 rel: 0.34 Storm rel vorticity (0-3000m) horiz: 6.0 stream: 2.0 10^-3/s Energy-Hel index: 0.00 Bulk Rich Number: 4.05 Bulk Shear: 2.48 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 ------------------------------------------------------------------------------- 500 286 13 212 5| 21.3 0.0 21.3| 49.2 0.0 49.2 98.4 0.94| 23.0 21.7 1000 287 18 256 8| 10.7 1.1 11.8| 49.2 -3.1 46.1 46.1 0.82| 12.6 10.4 1500 286 20 260 10| 7.1 1.0 8.1| 49.2 -9.6 39.6 26.4 0.68| 9.3 6.3 2000 285 21 259 10| 5.3 1.2 6.5| 49.2 -16.8 32.3 16.2 0.54| 7.7 4.1 2500 284 21 256 10| 4.3 1.4 5.7| 49.2 -23.4 25.7 10.3 0.42| 6.8 2.8 3000 283 20 252 10| 3.6 1.5 5.1| 49.2 -28.0 21.1 7.0 0.34| 6.0 2.0 4000 280 19 244 9| 2.7 1.5 4.1| 49.2 -34.8 14.4 3.6 0.24| 4.9 1.1 5000 278 17 236 9| 2.1 1.4 3.6| 49.2 -41.4 7.8 1.6 0.15| 4.2 0.6 6000 276 17 229 9| 2.1 1.2 3.3| 60.5 -42.5 18.0 3.0 0.23| 3.9 0.9 Wrote GIF file: /home/apache/climate/data/raob//U2820/skewt/U2820.skewt.20251012.00.gif