UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025120612.upa.cvt Date: 1200Z 6 DEC 25 Searching for U2820... Searching the city database file for: U2820 ... Date:1200Z 6 DEC 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 1012 105 0.4 -0.7 92 1.1 -0.0 250 1 272.6 273.2 272.5 282.3 3.59 1 1000 200 -0.9 -2.5 89 1.6 -1.5 290 1 272.2 272.8 271.6 280.9 3.18 2 941 686 -4.3 -5.5 91 1.2 -4.7 313 4 273.6 274.0 271.7 281.0 2.69 3 939 703 -2.9 -4.2 91 1.3 -3.4 314 4 275.2 275.7 273.1 283.4 2.98 4 925 823 -2.9 -4.1 91 1.2 -3.3 320 5 276.3 276.9 273.9 284.8 3.05 5 850 1489 -6.9 -10.0 79 3.1 -7.9 295 9 278.9 279.3 273.9 284.9 2.10 6 824 1731 -8.1 -12.0 73 3.9 -9.2 299 10 280.1 280.5 274.3 285.5 1.85 7 758 2377 -9.7 -14.3 69 4.6 -11.0 310 14 285.2 285.5 276.7 290.1 1.66 8 700 2989 -11.9 -21.9 43 10.0 -14.2 320 17 289.3 289.5 277.7 292.2 0.95 9 684 3166 -12.5 -26.5 30 14.0 -15.2 319 18 290.6 290.7 277.9 292.6 0.64 10 680 3210 -12.7 -26.7 30 14.0 -15.4 319 18 290.8 290.9 278.0 292.8 0.63 11 601 4138 -20.1 -26.1 59 6.0 -21.2 313 22 292.7 292.9 279.1 295.1 0.76 12 595 4212 -20.3 -26.3 59 6.0 -21.4 313 23 293.3 293.5 279.4 295.7 0.75 13 553 4750 -24.1 -33.1 43 9.0 -25.3 309 25 295.0 295.1 279.7 296.4 0.43 14 524 5141 -25.1 -35.1 39 10.0 -26.3 307 27 298.4 298.5 281.2 299.6 0.37 15 500 5480 -27.7 -41.7 25 14.0 -29.0 305 29 299.3 299.3 281.3 299.9 0.20 16 463 6027 -32.3 -48.3 19 16.0 -33.3 305 35 300.2 300.2 281.5 300.6 0.10 17 428 6579 -34.5 -52.5 14 18.0 -35.5 305 41 304.2 304.2 283.2 304.5 0.07 18 412 6845 -35.5 -50.5 20 15.0 -36.4 305 44 306.3 306.3 284.0 306.6 0.09 19 400 7050 -37.5 -50.5 25 13.0 -38.2 305 46 306.3 306.3 284.0 306.6 0.09 20 336 8230 -47.3 -57.3 31 10.0 -47.6 296 52 308.5 308.5 284.8 308.7 0.05 21 325 8450 -48.9 -58.9 30 10.0 -49.1 294 53 309.3 309.3 285.1 309.4 0.04 22 300 8970 -54.3 -64.3 28 10.0 -54.5 290 56 308.8 308.8 284.9 308.9 0.02 23 290 9185 -56.7 -66.7 27 10.0 -56.8 291 56 308.4 308.4 284.7 308.5 0.02 24 250 10110 -63.1 -73.1 25 10.0 -63.1 295 54 312.3 312.3 286.1 312.3 0.01 25 218 10936 -68.9 -77.9 26 9.0 -68.9 290 58 315.8 315.8 287.3 315.8 0.00 26 209 11187 -68.1 -77.1 26 9.0 -68.2 285 62 320.8 320.8 289.0 320.8 0.01 27 202 11390 -67.5 -76.5 27 9.0 -67.5 289 59 324.9 324.9 290.3 325.0 0.01 28 200 11450 -67.5 -76.5 27 9.0 -67.5 290 58 325.9 325.9 290.5 325.9 0.01 29 189 11791 -69.3 -78.3 26 9.0 -69.4 289 54 328.3 328.3 291.2 328.3 0.00 30 178 12153 -65.5 -74.5 28 9.0 -65.5 288 49 340.2 340.2 294.4 340.2 0.01 31 150 13200 -64.5 -73.5 28 9.0 -64.6 285 36 359.0 359.0 298.5 359.0 0.01 32 113 14941 -64.1 -74.1 24 10.0 -64.2 282 33 390.0 390.0 303.8 390.1 0.01 33 100 15690 -65.3 -75.3 24 10.0 -65.4 280 31 401.6 401.6 305.4 401.6 0.01 34 70 17820 -67.5 -78.5 19 11.0 -67.7 260 35 440.0 440.0 309.9 440.0 0.01 35 65 18266 -67.9 -78.9 19 11.0 -68.0 448.5 448.5 310.7 448.6 0.01 36 54 19368 -72.5 -84.5 15 12.0 -72.6 462.4 462.4 312.0 462.4 0.01 TRP 218 10936 -68.9 -77.9 26 9.0 -68.9 290 58 315.8 315.8 287.3 315.8 0.00 WND 209 11187 -68.1 -77.1 26 9.0 -68.2 285 62 320.8 320.8 289.0 320.8 0.01 Sounding variables and indices 1000-500 mb thick: 5280.00 m Freezing level: 1008.31 mb = 133.99 m = 439.59 ft Wetbulb zero: Below ground Precipitable water: 0.33 inches Sfc-500 mean rel hum: 60.44 % Est. max temperature: 6.30 C = 43.33 F Sfc-Lift cond lev (LCL): 994.66 mb = 242.83 m = 796.69 ft T: -1.20 C 700-500 lapse rate: 6.34 C/km ThetaE index: 1.44 C Layer 1000.0- 941.0 mb Conv cond level (CCL): 945.38 mb = 649.03 m = 2129.33 ft Mean mixing ratio: 3.00 g/kg Conv temperature: 1.25 C = 34.26 F Cap Strength: 14.28 C Lifted Index: 14.64 C Risk: None Lifted Index @300 mb: 19.04 C Lifted Index @700 mb: 9.29 C Showalter Index: 12.42 C Risk: None Total Totals Index: 38.50 C Risk: None Vertical Totals Index: 20.80 C Cross Totals Index: 17.70 C K Index: 0.80 Risk: None Sweat Index: 47.00 Risk: None Energy Index: 3.18 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 20.16 J/kg Max Up Vert Vel: 6.35 m/s Conv Inhibition (B-): 25720.54 J/kg Cap Strength: 14.65 C Lift Cond Lev (LCL): 940.56 mb = 689.91 m = 2263.45 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 339 at 13 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 1012 105 250 1 0.9 0.3 | 164 13 -3.7 12.6 1 1000 200 290 1 0.9 -0.3 | 163 12 -3.7 11.9 2 925 823 320 5 3.2 -3.8 | 171 9 -1.4 8.4 3 850 1489 295 9 8.2 -3.8 | 203 9 3.5 8.5 4 700 2989 320 17 10.9 -13.0 | 277 6 6.3 -0.7 5 500 5480 305 29 23.8 -16.6 | 283 20 19.1 -4.4 6 400 7050 305 46 37.7 -26.4 | 293 36 33.1 -14.1 7 300 8970 290 56 52.6 -19.2 | 278 48 48.0 -6.9 8 250 10110 295 54 48.9 -22.8 | 283 46 44.3 -10.5 9 218 10936 290 58 54.5 -19.8 | 279 50 49.9 -7.6 10 209 11187 285 62 59.9 -16.0 | 274 55 55.3 -3.8 11 200 11450 290 58 54.5 -19.8 | 279 50 49.9 -7.6 12 150 13200 285 36 34.8 -9.3 | 264 30 30.1 3.0 13 100 15690 280 31 30.5 -5.4 | 255 27 25.9 6.9 14 70 17820 260 35 34.5 6.1 | 238 35 29.8 18.4 Wind Parameters Mean winds (0-6000m): 309.4 at 17.5 knts Storm direction: 339.4 at 13.1 knts Shear (0-3000m) pos: 2.1 neg: 1.1 tot: 3.2 10-3/s Storm rel Dir Shear (0-3000m): 114.9 deg Storm rel helicity (0-3000m) pos: 33.0 neg: -0.6 tot: 32.4 m^2/s^2 ave: 10.8 10^-3 m/s^2 rel: 0.76 Storm rel vorticity (0-3000m) horiz: 3.5 stream: 2.7 10^-3/s Energy-Hel index: 0.00 Bulk Rich Number: 0.64 Bulk Shear: 31.64 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 ------------------------------------------------------------------------------- 500 302 2 166 12| 3.3 0.0 3.3| 4.0 -0.6 3.4 6.9 0.34| 3.5 1.2 1000 314 4 168 10| 1.7 1.6 3.2| 8.6 -0.6 8.1 8.1 0.47| 3.6 1.7 1500 305 5 177 9| 1.1 2.1 3.2| 16.2 -0.6 15.6 10.4 0.62| 3.6 2.3 2000 304 7 185 9| 1.6 1.6 3.2| 22.2 -0.6 21.6 10.8 0.68| 3.5 2.4 2500 307 8 193 8| 2.0 1.3 3.2| 28.0 -0.6 27.4 11.0 0.74| 3.5 2.6 3000 311 9 202 7| 2.1 1.1 3.2| 33.0 -0.6 32.4 10.8 0.76| 3.5 2.7 4000 313 12 225 6| 1.6 1.5 3.1| 35.1 -0.6 34.5 8.6 0.64| 3.3 2.1 5000 311 15 248 7| 1.3 1.7 3.0| 35.2 -1.8 33.4 6.7 0.52| 3.2 1.7 6000 309 17 262 9| 1.1 2.2 3.2| 48.1 -3.0 45.1 7.5 0.45| 3.4 1.5 Wrote GIF file: /home/apache/climate/data/raob//U2820/skewt/U2820.skewt.20251206.12.gif