UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025101212.upa.cvt Date: 1200Z 12 OCT 25 Searching for U2820... Searching the city database file for: U2820 ... Date:1200Z 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 -14 SFC 985 110 5.6 4.8 95 0.8 5.2 270 1 280.0 280.9 279.1 295.0 5.47 2 984 118 7.0 5.9 93 1.1 6.5 271 1 281.4 282.5 280.3 297.7 5.92 3 925 623 3.6 3.0 96 0.6 3.3 320 9 283.0 283.9 280.1 297.3 5.13 4 907 782 2.4 1.9 96 0.5 2.2 327 9 283.4 284.2 280.0 296.9 4.84 5 874 1082 1.8 1.5 98 0.3 1.7 340 9 285.7 286.6 281.1 299.5 4.88 6 852 1286 -0.7 -1.0 98 0.3 -0.9 349 9 285.2 285.9 280.0 297.0 4.17 7 850 1305 -0.7 -1.0 98 0.3 -0.9 350 9 285.4 286.1 280.1 297.3 4.18 8 700 2829 -10.3 -11.8 89 1.5 -10.8 65 1 291.1 291.5 280.3 297.7 2.21 9 668 3188 -12.5 -14.3 86 1.8 -13.0 61 2 292.5 292.9 280.6 298.3 1.89 10 500 5330 -29.7 -33.8 67 4.1 -30.2 35 9 296.8 296.9 280.6 298.3 0.44 11 494 5416 -30.5 -34.8 66 4.3 -31.0 38 9 296.9 296.9 280.6 298.2 0.40 12 400 6880 -41.1 -48.1 47 7.0 -41.4 85 15 301.6 301.6 282.2 302.0 0.12 13 389 7068 -42.5 -49.5 46 7.0 -42.8 88 13 302.2 302.2 282.4 302.5 0.11 14 363 7531 -45.1 -52.1 45 7.0 -45.3 95 9 304.7 304.7 283.4 305.0 0.09 15 331 8144 -46.1 -54.1 40 8.0 -46.4 122 10 311.5 311.5 285.9 311.8 0.07 16 312 8538 -44.5 -52.5 41 8.0 -44.9 139 11 319.0 319.1 288.5 319.4 0.09 17 300 8800 -44.1 -52.1 41 8.0 -44.5 150 11 323.2 323.2 289.9 323.6 0.10 18 250 10030 -42.9 -51.9 37 9.0 -43.4 175 11 342.3 342.3 295.0 342.8 0.13 19 231 10565 -41.5 -50.5 37 9.0 -42.1 180 10 352.2 352.3 297.3 352.9 0.16 20 200 11540 -42.9 -51.9 37 9.0 -43.5 190 7 364.8 364.9 299.8 365.5 0.16 21 150 13480 -45.1 -55.1 32 10.0 -45.8 215 11 392.3 392.4 304.2 393.0 0.14 22 114 15295 -47.3 -57.3 31 10.0 -48.0 208 6 420.3 420.3 307.9 421.0 0.15 23 100 16150 -51.3 -61.3 29 10.0 -51.9 205 3 428.6 428.6 308.7 429.1 0.10 24 87 17047 -55.1 -65.1 28 10.0 -55.5 252 5 438.4 438.4 309.7 438.8 0.07 25 72 18259 -53.7 -64.7 25 11.0 -54.4 316 7 465.7 465.8 312.3 466.2 0.09 26 70 18440 -53.7 -64.7 25 11.0 -54.4 325 7 469.5 469.5 312.7 470.0 0.09 27 52 20341 -57.7 -68.7 23 11.0 -58.3 356 9 501.8 501.9 315.1 502.3 0.07 28 50 20590 -56.3 -67.3 24 11.0 -57.0 360 9 510.8 510.8 315.7 511.4 0.09 29 49 20718 -55.9 -66.9 24 11.0 -56.6 359 9 514.7 514.7 316.0 515.3 0.10 30 43 21543 -58.5 -69.5 23 11.0 -59.1 351 9 527.9 527.9 316.8 528.4 0.08 31 30 23800 -59.3 -71.3 20 12.0 -60.1 330 9 583.0 583.0 319.8 583.6 0.08 32 26 24696 -59.3 -70.3 23 11.0 -60.2 607.3 607.4 321.0 608.2 0.11 TRP 363 7531 -45.1 -52.1 45 7.0 -45.3 95 9 304.7 304.7 283.4 305.0 0.09 WND Sounding variables and indices 1000-500 mb thick: 5344.00 m Freezing level: 858.16 mb = 1228.90 m = 4031.77 ft Wetbulb zero: 859.50 mb = 1215.83 m = 3988.88 ft Precipitable water: 0.60 inches Sfc-500 mean rel hum: 86.47 % Est. max temperature: 11.56 C = 52.81 F Sfc-Lift cond lev (LCL): 973.00 mb = 209.76 m = 688.18 ft T: 6.38 C 700-500 lapse rate: 7.76 C/km ThetaE index: 2.48 C Layer 852.0- 850.0 mb Conv cond level (CCL): 920.50 mb = 662.51 m = 2173.58 ft Mean mixing ratio: 5.27 g/kg Conv temperature: 8.71 C = 47.67 F Cap Strength: 1.14 C Lifted Index: 1.04 C Risk: Showers probable Lifted Index @300 mb: 18.28 C Lifted Index @700 mb: 0.58 C Showalter Index: 1.16 C Risk: Showers probable Total Totals Index: 57.70 C Risk: Severe Thunderstorms probable Vertical Totals Index: 29.00 C Cross Totals Index: 28.70 C K Index: 26.50 Risk: 40-60 % chance of thunderstorms Sweat Index: 201.00 Risk: None Energy Index: 0.19 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 11.30 J/kg Max Up Vert Vel: 4.75 m/s Conv Inhibition (B-): 40434.64 J/kg Cap Strength: 1.14 C Lift Cond Lev (LCL): 924.04 mb = 631.46 m = 2071.68 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 48 at 5 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 ---------------------------------------------------------- 0 985 110 270 1 1.0 -0.0 | 235 5 4.5 3.1 1 925 623 320 9 5.8 -6.9 | 292 10 9.2 -3.8 2 850 1305 350 9 1.6 -8.9 | 319 8 5.0 -5.8 3 700 2829 65 1 -0.9 -0.4 | 224 4 2.6 2.7 4 500 5330 35 9 -5.2 -7.4 | 22 5 -1.7 -4.3 5 400 6880 85 15 -14.9 -1.3 | 99 12 -11.5 1.8 6 363 7531 95 9 -9.0 0.8 | 125 7 -5.5 3.9 7 300 8800 150 11 -5.5 9.5 | 171 13 -2.0 12.6 8 250 10030 175 11 -1.0 11.0 | 190 14 2.5 14.0 9 200 11540 190 7 1.2 6.9 | 205 11 4.7 10.0 10 150 13480 215 11 6.3 9.0 | 219 16 9.8 12.1 11 100 16150 205 3 1.3 2.7 | 219 7 4.7 5.8 12 70 18440 325 7 4.0 -5.7 | 290 8 7.5 -2.7 13 50 20590 360 9 -0.0 -9.0 | 330 7 3.5 -5.9 14 30 23800 330 9 4.5 -7.8 | 301 9 8.0 -4.7 Wind Parameters Mean winds (0-6000m): 18.3 at 6.2 knts Storm direction: 48.3 at 4.6 knts Shear (0-3000m) pos: 0.5 neg: 0.0 tot: 0.5 10-3/s Storm rel Dir Shear (0-3000m): -16.0 deg Storm rel helicity (0-3000m) pos: 28.3 neg: -1.3 tot: 27.0 m^2/s^2 ave: 9.0 10^-3 m/s^2 rel: 0.40 Storm rel vorticity (0-3000m) horiz: 4.3 stream: 1.8 10^-3/s Energy-Hel index: 0.00 Bulk Rich Number: 2.46 Bulk Shear: 4.59 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 ------------------------------------------------------------------------------- 500 315 5 273 7| 8.4 0.0 8.4| 16.3 0.0 16.3 32.5 0.85| 9.2 7.9 1000 325 7 289 8| 4.5 0.0 4.5| 24.1 0.0 24.1 24.1 0.86| 6.5 5.6 1500 335 7 299 8| 2.6 0.0 2.6| 28.0 0.0 28.0 18.7 0.78| 5.7 4.4 2000 342 7 303 7| 1.4 0.0 1.4| 28.2 -0.3 27.9 14.0 0.62| 5.2 3.2 2500 343 6 300 6| 0.6 0.0 0.6| 28.2 -1.0 27.2 10.9 0.45| 4.8 2.1 3000 343 6 294 6| 0.5 0.0 0.5| 28.3 -1.3 27.0 9.0 0.40| 4.3 1.8 4000 354 5 296 4| 0.4 0.4 0.8| 28.3 -1.6 26.7 6.7 0.31| 3.7 1.1 5000 6 5 308 4| 0.3 0.7 1.0| 28.3 -2.1 26.2 5.2 0.24| 3.3 0.8 6000 18 6 331 3| 0.7 0.6 1.3| 35.6 -2.3 33.3 5.5 0.32| 3.3 1.1 Wrote GIF file: /home/apache/climate/data/raob//U2820/skewt/U2820.skewt.20251012.12.gif