UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025120900.upa.cvt Date: 0000Z 9 DEC 25 Searching for U2820... Searching the city database file for: U2820 ... Date:0000Z 9 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 ------------------------------------------------------------------------------- 0 1000 99 135 3 SFC 999 107 -0.7 -1.6 94 0.9 -1.0 135 3 272.5 273.1 272.2 281.7 3.40 2 925 720 -3.9 -5.4 89 1.5 -4.4 200 19 275.3 275.8 272.9 283.0 2.76 3 923 737 -3.9 -5.4 89 1.5 -4.4 201 19 275.5 276.0 273.0 283.1 2.77 4 878 1132 -2.7 -3.6 94 0.9 -3.1 225 18 280.7 281.3 276.7 290.1 3.33 5 850 1389 -3.3 -4.1 94 0.8 -3.6 240 17 282.7 283.3 277.7 292.1 3.32 6 700 2904 -10.5 -12.7 84 2.2 -11.2 220 21 290.9 291.2 280.0 297.0 2.05 7 695 2959 -10.7 -12.8 84 2.1 -11.3 220 21 291.2 291.6 280.2 297.4 2.05 8 570 4451 -21.5 -24.3 78 2.8 -22.0 229 25 295.5 295.7 280.7 298.5 0.94 9 500 5410 -25.1 -29.2 69 4.1 -25.8 235 27 302.4 302.6 283.2 304.7 0.68 10 430 6486 -30.1 -34.4 66 4.3 -30.6 238 27 309.4 309.5 285.7 311.1 0.48 11 349 7919 -43.9 -47.2 70 3.3 -44.0 242 30 309.8 309.8 285.4 310.4 0.16 12 300 8910 -52.1 -55.1 70 3.0 -52.2 245 33 311.9 311.9 286.1 312.2 0.07 13 276 9445 -56.3 -59.5 67 3.2 -56.3 240 39 313.4 313.4 286.6 313.5 0.05 14 250 10070 -59.5 -62.9 64 3.4 -59.6 235 46 317.6 317.6 288.0 317.7 0.03 15 226 10716 -62.3 -65.5 65 3.2 -62.3 240 43 322.6 322.6 289.6 322.7 0.03 16 200 11490 -62.5 -65.8 64 3.3 -62.6 245 40 333.8 333.8 292.7 333.9 0.03 17 181 12089 -62.5 -65.8 64 3.3 -62.6 255 40 343.5 343.5 295.2 343.6 0.03 18 150 13220 -62.7 -66.2 63 3.5 -62.7 285 35 362.1 362.1 299.1 362.2 0.03 19 139 13689 -62.9 -66.6 61 3.7 -63.0 286 36 369.7 369.7 300.5 369.8 0.04 20 100 15700 -66.7 -70.6 58 3.9 -66.8 290 38 398.9 398.9 305.0 399.0 0.03 21 70 17830 -71.1 -75.3 54 4.2 -71.2 300 46 432.3 432.3 309.1 432.4 0.02 22 62 18543 -72.7 -77.3 50 4.6 -72.8 302 48 444.0 444.0 310.3 444.1 0.02 23 50 19800 -73.3 -78.1 48 4.8 -73.3 305 52 470.8 470.8 312.7 470.9 0.02 24 42 20819 -73.9 -78.7 48 4.8 -74.0 493.3 493.3 314.5 493.5 0.02 TRP 181 12089 -62.5 -65.8 64 3.3 -62.6 255 40 343.5 343.5 295.2 343.6 0.03 WND Sounding variables and indices 1000-500 mb thick: 5311.00 m Freezing level: Surface below freezing Wetbulb zero: Below ground Precipitable water: 0.48 inches Sfc-500 mean rel hum: 84.45 % Est. max temperature: 9.51 C = 49.11 F Sfc-Lift cond lev (LCL): 984.88 mb = 220.39 m = 723.05 ft T: -1.29 C 700-500 lapse rate: 5.83 C/km Conv cond level (CCL): 781.74 mb = 2042.24 m = 6700.18 ft Mean mixing ratio: 3.03 g/kg Conv temperature: 12.98 C = 55.36 F Cap Strength: 11.76 C Lifted Index: 16.48 C Risk: None Lifted Index @300 mb: 20.51 C Lifted Index @700 mb: 9.93 C Showalter Index: 9.57 C Risk: None Total Totals Index: 42.80 C Risk: None Vertical Totals Index: 21.80 C Cross Totals Index: 21.00 C K Index: 15.50 Risk: < 20 % chance of thunderstorms Sweat Index: 61.00 Risk: None Energy Index: 2.57 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 17.81 J/kg Max Up Vert Vel: 5.97 m/s Conv Inhibition (B-): 30080.54 J/kg Cap Strength: 15.78 C Lift Cond Lev (LCL): 929.74 mb = 679.33 m = 2228.74 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 257 at 16 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 ---------------------------------------------------------- 0 999 107 135 3 -2.1 2.1 | 85 18 -17.6 -1.4 1 925 720 200 19 6.5 17.9 | 148 17 -9.0 14.3 2 850 1389 240 17 14.7 8.5 | 171 5 -0.8 5.0 3 700 2904 220 21 13.5 16.1 | 171 13 -2.0 12.6 4 500 5410 235 27 22.1 15.5 | 209 14 6.6 12.0 5 400 6990 240 27 23.4 13.5 | 218 13 7.9 10.0 6 300 8910 245 33 29.9 13.9 | 234 18 14.4 10.4 7 250 10070 235 46 37.7 26.4 | 224 32 22.2 22.9 8 200 11490 245 40 36.3 16.9 | 237 25 20.7 13.4 9 181 12089 255 40 38.6 10.4 | 254 24 23.1 6.8 10 150 13220 285 35 33.8 -9.1 | 304 22 18.3 -12.6 11 100 15700 290 38 35.7 -13.0 | 309 26 20.2 -16.5 12 70 17830 300 46 39.8 -23.0 | 317 36 24.3 -26.5 13 50 19800 305 52 42.6 -29.8 | 321 43 27.1 -33.3 Wind Parameters Mean winds (0-6000m): 227.2 at 21.2 knts Storm direction: 257.2 at 15.9 knts Shear (0-3000m) pos: 3.2 neg: 1.1 tot: 4.3 10-3/s Storm rel Dir Shear (0-3000m): 88.4 deg Storm rel helicity (0-3000m) pos: 114.6 neg: -1.6 tot: 113.0 m^2/s^2 ave: 37.7 10^-3 m/s^2 rel: 0.60 Storm rel vorticity (0-3000m) horiz: 7.1 stream: 4.3 10^-3/s Energy-Hel index: 0.01 Bulk Rich Number: 0.63 Bulk Shear: 28.29 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 ------------------------------------------------------------------------------- 500 191 9 113 15| 14.9 0.0 14.9| 77.4 0.0 77.4 154.9 0.98| 16.4 16.1 1000 202 14 132 14| 9.3 0.0 9.3|109.3 0.0 109.3 109.3 0.83| 14.4 11.9 1500 214 15 142 11| 6.3 0.0 6.3|112.2 0.0 112.2 74.8 0.72| 11.7 8.5 2000 220 16 148 10| 4.7 0.6 5.4|112.4 -0.0 112.4 56.2 0.68| 9.4 6.4 2500 222 17 153 10| 3.8 1.0 4.8|112.4 -0.7 111.7 44.7 0.63| 8.1 5.1 3000 222 17 157 10| 3.2 1.1 4.3|114.6 -1.6 113.0 37.7 0.60| 7.1 4.3 4000 222 19 164 11| 2.8 0.9 3.6|126.0 -1.6 124.4 31.1 0.63| 5.8 3.6 5000 225 20 172 11| 2.5 0.7 3.2|138.2 -1.6 136.5 27.3 0.66| 5.0 3.3 6000 227 21 180 11| 2.2 0.6 2.8|145.4 -1.6 143.8 24.0 0.67| 4.3 2.9 Wrote GIF file: /home/apache/climate/data/raob//U2820/skewt/U2820.skewt.20251209.00.gif