UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025120812.upa.cvt Date: 1200Z 8 DEC 25 Searching for U2820... Searching the city database file for: U2820 ... Date:1200Z 8 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 1005 113 -3.1 -4.6 89 1.5 -3.6 135 9 269.7 270.1 269.2 276.9 2.70 1 1000 152 -3.5 -5.4 87 1.9 -4.1 135 11 269.6 270.1 269.0 276.6 2.55 2 976 344 -5.1 -7.2 85 2.1 -5.8 154 18 269.9 270.3 268.7 276.1 2.28 3 939 648 -3.3 -4.7 90 1.4 -3.8 183 29 274.8 275.2 272.7 282.6 2.87 4 925 767 -3.9 -5.5 89 1.6 -4.5 195 33 275.3 275.8 272.8 282.9 2.74 5 850 1428 -8.5 -10.3 87 1.8 -9.1 215 29 277.2 277.6 272.9 283.0 2.05 6 845 1474 -8.7 -10.6 86 1.9 -9.3 216 29 277.5 277.8 273.0 283.2 2.01 7 828 1631 -7.9 -9.6 88 1.7 -8.4 218 28 280.0 280.3 274.7 286.3 2.23 8 825 1660 -5.7 -7.4 88 1.7 -6.3 219 28 282.6 283.0 276.7 290.2 2.65 9 796 1941 -4.9 -5.6 95 0.7 -5.2 223 27 286.3 286.9 279.3 295.4 3.16 10 700 2942 -9.5 -11.4 86 1.9 -10.1 240 23 292.0 292.4 280.8 298.8 2.28 11 518 5203 -24.5 -27.4 77 2.9 -25.0 231 34 300.1 300.3 282.4 302.7 0.78 12 500 5460 -26.7 -29.6 76 2.9 -27.1 230 35 300.5 300.6 282.4 302.7 0.66 13 400 7020 -39.9 -43.3 70 3.4 -40.1 215 31 303.1 303.2 283.0 303.9 0.21 14 325 8405 -52.1 -55.3 68 3.2 -52.2 219 35 304.9 304.9 283.4 305.1 0.07 15 300 8920 -55.9 -59.2 66 3.3 -55.9 220 36 306.6 306.6 284.1 306.7 0.04 16 252 10011 -63.1 -66.5 63 3.4 -63.1 225 52 311.5 311.5 285.9 311.6 0.02 17 250 10060 -62.9 -66.3 63 3.4 -62.9 225 52 312.6 312.6 286.2 312.6 0.02 18 200 11420 -65.1 -68.6 62 3.5 -65.1 240 38 329.7 329.7 291.6 329.7 0.02 19 198 11481 -65.3 -68.8 62 3.5 -65.3 241 38 330.3 330.3 291.8 330.4 0.02 20 174 12272 -63.5 -67.2 61 3.7 -63.6 257 37 345.7 345.7 295.7 345.8 0.03 21 150 13180 -65.5 -69.3 59 3.8 -65.5 275 35 357.2 357.3 298.2 357.3 0.02 22 126 14238 -66.1 -70.0 58 3.9 -66.1 284 35 374.4 374.4 301.4 374.5 0.02 23 113 14892 -69.7 -74.0 53 4.3 -69.7 289 36 379.6 379.6 302.2 379.6 0.02 24 100 15620 -69.5 -74.0 52 4.5 -69.5 295 36 393.4 393.4 304.3 393.5 0.02 25 73 17491 -69.7 -74.5 49 4.8 -69.8 299 36 430.1 430.1 308.9 430.2 0.02 26 70 17740 -70.7 -75.4 50 4.7 -70.8 300 36 433.1 433.1 309.2 433.2 0.02 27 56 19053 -73.9 -78.9 46 5.0 -73.9 454.4 454.4 311.3 454.5 0.01 TRP 252 10011 -63.1 -66.5 63 3.4 -63.1 225 52 311.5 311.5 285.9 311.6 0.02 WND Sounding variables and indices 1000-500 mb thick: 5308.00 m Freezing level: Surface below freezing Wetbulb zero: Below ground Precipitable water: 0.45 inches Sfc-500 mean rel hum: 85.04 % Est. max temperature: 4.36 C = 39.84 F Sfc-Lift cond lev (LCL): 981.41 mb = 299.94 m = 984.05 ft T: -4.74 C 700-500 lapse rate: 6.83 C/km ThetaE index: 0.83 C Layer 1000.0- 939.0 mb Conv cond level (CCL): 873.58 mb = 1214.06 m = 3983.09 ft Mean mixing ratio: 2.59 g/kg Conv temperature: 3.87 C = 38.97 F Cap Strength: 17.37 C Lifted Index: 17.40 C Risk: None Lifted Index @300 mb: 19.02 C Lifted Index @700 mb: 13.33 C Showalter Index: 14.82 C Risk: None Total Totals Index: 34.60 C Risk: None Vertical Totals Index: 18.20 C Cross Totals Index: 16.40 C K Index: 6.00 Risk: None Sweat Index: 150.35 Risk: None Energy Index: 4.20 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 28.39 J/kg Max Up Vert Vel: 7.53 m/s Conv Inhibition (B-): 27167.87 J/kg Cap Strength: 17.40 C Lift Cond Lev (LCL): 928.05 mb = 741.00 m = 2431.08 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 254 at 21 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 1005 113 135 9 -6.4 6.4 | 91 27 -26.7 0.6 1 1000 152 135 11 -7.8 7.8 | 94 28 -28.1 2.0 2 925 767 195 33 8.5 31.9 | 156 29 -11.8 26.1 3 850 1428 215 29 16.6 23.8 | 168 18 -3.7 18.0 4 700 2942 240 23 19.9 11.5 | 176 6 -0.4 5.7 5 500 5460 230 35 26.8 22.5 | 201 18 6.4 16.7 6 400 7020 215 31 17.8 25.4 | 172 20 -2.6 19.6 7 300 8920 220 36 23.1 27.6 | 187 22 2.8 21.8 8 252 10011 225 52 36.8 36.8 | 208 35 16.4 31.0 9 250 10060 225 52 36.8 36.8 | 208 35 16.4 31.0 10 200 11420 240 38 32.9 19.0 | 224 18 12.5 13.2 11 150 13180 275 35 34.9 -3.1 | 301 17 14.5 -8.8 12 100 15620 295 36 32.6 -15.2 | 330 24 12.3 -21.0 13 70 17740 300 36 31.2 -18.0 | 336 26 10.8 -23.8 Wind Parameters Mean winds (0-6000m): 224.1 at 28.2 knts Storm direction: 254.1 at 21.2 knts Shear (0-3000m) pos: 4.7 neg: 0.0 tot: 4.7 10-3/s Storm rel Dir Shear (0-3000m): 89.8 deg Storm rel helicity (0-3000m) pos: 297.9 neg: -0.1 tot: 297.8 m^2/s^2 ave: 99.3 10^-3 m/s^2 rel: 0.70 Storm rel vorticity (0-3000m) horiz: 10.0 stream: 7.0 10^-3/s Energy-Hel index: 0.05 Bulk Rich Number: 0.37 Bulk Shear: 77.53 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 ------------------------------------------------------------------------------- 500 166 19 116 28| 22.7 0.0 22.7|183.6 0.0 183.6 367.3 0.97| 25.0 24.2 1000 189 25 139 25| 15.0 0.0 15.0|277.5 0.0 277.5 277.5 0.91| 20.5 18.6 1500 198 26 148 23| 9.8 0.0 9.8|291.8 0.0 291.8 194.6 0.83| 16.1 13.3 2000 204 27 153 21| 7.2 0.0 7.2|295.7 0.0 295.7 147.8 0.78| 13.2 10.2 2500 209 26 157 19| 5.6 0.0 5.6|297.0 0.0 297.0 118.8 0.73| 11.4 8.3 3000 213 26 159 17| 4.7 0.0 4.7|297.9 -0.1 297.8 99.3 0.70| 10.0 7.0 4000 220 26 165 15| 3.5 0.7 4.2|302.7 -0.1 302.6 75.7 0.67| 8.2 5.5 5000 223 27 172 14| 2.8 1.1 3.9|305.8 -0.1 305.7 61.1 0.64| 7.1 4.5 6000 224 28 177 14| 2.4 1.0 3.4|306.2 -19.5 286.7 47.8 0.53| 6.4 3.4 Wrote GIF file: /home/apache/climate/data/raob//U2820/skewt/U2820.skewt.20251208.12.gif