UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025121012.upa.cvt Date: 1200Z 10 DEC 25 Searching for U4908... Searching the city database file for: U4908 ... Date:1200Z 10 DEC 25 Station: U4908 WMO ident: 24908 Latitude: 60.33 Longitude: 102.27 ------------------------------------------------------------------------------- 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 185 SFC 990 259 -20.5 -22.9 81 2.4 -20.8 225 3 253.4 253.5 253.0 255.0 0.61 2 925 759 -23.1 -26.2 76 3.1 -23.4 280 25 255.7 255.8 254.7 257.0 0.49 3 910 879 -23.7 -26.7 76 3.0 -24.0 279 25 256.3 256.3 255.1 257.6 0.47 4 877 1149 -22.1 -25.1 77 3.0 -22.5 277 24 260.7 260.7 258.9 262.2 0.57 5 850 1379 -23.1 -26.0 77 2.9 -23.5 275 23 261.9 262.0 259.8 263.5 0.54 6 843 1440 -23.5 -26.4 77 2.9 -23.8 276 24 262.1 262.2 259.9 263.6 0.52 7 807 1760 -21.5 -24.2 79 2.7 -21.9 282 26 267.6 267.7 264.3 269.5 0.67 8 700 2798 -26.7 -30.0 74 3.3 -27.1 300 36 272.9 273.0 267.5 274.3 0.45 9 518 4918 -38.5 -41.9 70 3.4 -38.7 309 52 283.2 283.3 273.3 283.8 0.19 10 500 5160 -40.1 -43.5 70 3.4 -40.3 310 54 284.1 284.2 273.8 284.7 0.16 11 400 6650 -49.9 -53.3 67 3.4 -50.0 315 68 290.1 290.1 276.9 290.4 0.07 12 308 8317 -61.3 -64.7 65 3.3 -61.4 325 79 296.6 296.6 279.8 296.7 0.02 13 300 8480 -62.5 -65.8 64 3.3 -62.5 325 75 297.2 297.2 280.1 297.3 0.02 14 251 9566 -67.5 -70.8 63 3.3 -67.5 320 69 305.4 305.4 283.5 305.4 0.01 15 250 9590 -67.7 -70.9 64 3.2 -67.7 320 69 305.4 305.4 283.6 305.5 0.01 16 238 9885 -67.1 -70.4 63 3.3 -67.1 317 64 310.7 310.7 285.6 310.7 0.01 17 200 10940 -63.5 -66.8 64 3.3 -63.6 305 46 332.2 332.2 292.3 332.3 0.02 18 197 11033 -63.1 -66.4 64 3.3 -63.1 306 45 334.3 334.3 292.9 334.4 0.03 19 155 12517 -62.7 -66.2 63 3.5 -62.7 314 33 358.7 358.7 298.5 358.8 0.03 20 150 12720 -63.3 -66.8 62 3.5 -63.3 315 31 361.0 361.0 299.0 361.2 0.03 21 141 13102 -61.1 -64.7 62 3.6 -61.2 310 30 371.3 371.3 300.8 371.5 0.05 22 107 14798 -64.7 -68.6 58 3.9 -64.8 286 24 395.0 395.0 304.5 395.2 0.03 23 100 15210 -64.9 -68.9 58 4.0 -65.0 280 23 402.3 402.3 305.5 402.5 0.04 24 94 15590 -62.3 -66.5 57 4.2 -62.4 278 23 414.6 414.6 307.1 414.9 0.05 25 70 17390 -67.7 -72.1 53 4.4 -67.8 270 23 439.5 439.6 309.8 439.7 0.03 26 68 17564 -68.1 -72.5 53 4.4 -68.2 269 24 442.3 442.4 310.1 442.5 0.03 27 57 18624 -67.5 -72.1 52 4.6 -67.6 261 31 466.6 466.6 312.4 466.8 0.04 28 50 19410 -68.7 -73.4 51 4.7 -68.8 255 36 481.6 481.6 313.6 481.8 0.04 29 42 20453 -69.1 -74.0 49 4.9 -69.2 505.2 505.2 315.4 505.5 0.04 TRP 251 9566 -67.5 -70.8 63 3.3 -67.5 320 69 305.4 305.4 283.5 305.4 0.01 WND 308 8317 -61.3 -64.7 65 3.3 -61.4 325 79 296.6 296.6 279.8 296.7 0.02 Sounding variables and indices 1000-500 mb thick: 4975.00 m Freezing level: Surface below freezing Wetbulb zero: Below ground Precipitable water: 0.10 inches Sfc-500 mean rel hum: 74.35 % Est. max temperature: -11.32 C = 11.63 F Sfc-Lift cond lev (LCL): 951.50 mb = 551.15 m = 1808.21 ft T: -22.02 C 700-500 lapse rate: 5.67 C/km ThetaE index: 0.00 C Layer 990.0- -0.0 mb Conv cond level (CCL): 660.90 mb = 3202.68 m = 10507.36 ft Mean mixing ratio: 0.53 g/kg Conv temperature: 0.97 C = 33.74 F Cap Strength: 21.89 C Lifted Index: 22.46 C Risk: None Lifted Index @300 mb: 28.65 C Lifted Index @700 mb: 14.88 C Showalter Index: 17.07 C Risk: None Total Totals Index: 31.10 C Risk: None Vertical Totals Index: 17.00 C Cross Totals Index: 14.10 C K Index: -12.30 Risk: None Sweat Index: 100.00 Risk: None Energy Index: 4.52 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 16.75 J/kg Max Up Vert Vel: 5.79 m/s Conv Inhibition (B-): 39377.97 J/kg Cap Strength: 22.25 C Lift Cond Lev (LCL): 896.11 mb = 991.41 m = 3252.61 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 333 at 30 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 ---------------------------------------------------------- 0 990 259 225 3 2.1 2.1 | 158 31 -11.5 28.4 1 925 759 280 25 24.6 -4.3 | 207 25 11.0 21.9 2 850 1379 275 23 22.9 -2.0 | 201 26 9.2 24.3 3 700 2798 300 36 31.2 -18.0 | 245 19 17.5 8.3 4 500 5160 310 54 41.4 -34.7 | 287 29 27.7 -8.4 5 400 6650 315 68 48.1 -48.1 | 302 41 34.4 -21.8 6 308 8317 325 79 45.3 -64.7 | 321 50 31.6 -38.4 7 300 8480 325 75 43.0 -61.4 | 320 46 29.4 -35.1 8 251 9566 320 69 44.4 -52.9 | 311 41 30.7 -26.6 9 250 9590 320 69 44.4 -52.9 | 311 41 30.7 -26.6 10 200 10940 305 46 37.7 -26.4 | 270 24 24.0 -0.1 11 150 12720 315 31 21.9 -21.9 | 242 9 8.3 4.4 12 100 15210 280 23 22.7 -4.0 | 202 24 9.0 22.3 13 70 17390 270 23 23.0 -0.0 | 200 28 9.3 26.3 14 50 19410 255 36 34.8 9.3 | 211 41 21.1 35.6 Wind Parameters Mean winds (0-6000m): 302.5 at 39.5 knts Storm direction: 332.5 at 29.6 knts Shear (0-3000m) pos: 7.1 neg: 0.4 tot: 7.5 10-3/s Storm rel Dir Shear (0-3000m): 97.0 deg Storm rel helicity (0-3000m) pos: 311.1 neg: -16.2 tot: 294.9 m^2/s^2 ave: 98.3 10^-3 m/s^2 rel: 0.84 Storm rel vorticity (0-3000m) horiz: 8.7 stream: 7.4 10^-3/s Energy-Hel index: 0.03 Bulk Rich Number: 0.16 Bulk Shear: 102.91 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 ------------------------------------------------------------------------------- 500 275 14 181 25| 24.1 0.0 24.1|191.2 0.0 191.2 382.3 0.94| 27.0 25.5 1000 277 19 192 25| 12.0 1.2 13.2|191.2 -13.5 177.7 177.7 0.80| 14.7 11.7 1500 277 21 196 25| 9.2 0.8 10.0|218.4 -16.2 202.3 134.8 0.79| 11.5 9.1 2000 280 23 202 24| 8.2 0.6 8.8|254.2 -16.2 238.1 119.0 0.81| 10.2 8.3 2500 285 25 208 22| 7.6 0.5 8.1|289.6 -16.2 273.4 109.4 0.83| 9.6 8.0 3000 289 27 214 21| 7.1 0.4 7.5|311.1 -16.2 294.9 98.3 0.84| 8.7 7.4 4000 294 31 227 20| 6.3 0.3 6.6|354.3 -16.2 338.1 84.5 0.85| 7.6 6.5 5000 299 35 242 19| 5.9 0.2 6.1|402.6 -16.2 386.5 77.3 0.84| 7.0 5.9 6000 303 40 256 20| 5.7 0.2 5.9|458.0 -16.2 441.8 73.6 0.81| 6.7 5.4 Wrote GIF file: /home/apache/climate/data/raob//U4908/skewt/U4908.skewt.20251210.12.gif