UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025102812.upa.cvt Date: 1200Z 28 OCT 25 Searching for U2820... Searching the city database file for: U2820 ... Date:1200Z 28 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 -29 SFC 983 112 6.8 6.1 95 0.7 6.5 20 1 281.3 282.4 280.4 297.9 6.01 2 925 609 3.2 0.9 85 2.3 2.1 165 7 282.6 283.3 279.0 294.9 4.41 3 882 993 0.4 -1.3 88 1.7 -0.3 188 9 283.6 284.2 278.9 294.7 3.94 4 850 1289 -0.7 -2.9 85 2.2 -1.6 205 11 285.4 286.0 279.4 295.8 3.63 5 828 1498 -1.5 -3.4 87 1.9 -2.3 202 12 286.7 287.3 280.0 297.0 3.59 6 700 2813 -10.5 -13.5 79 3.0 -11.4 185 15 290.9 291.2 279.8 296.6 1.93 7 611 3843 -18.7 -20.6 85 1.9 -19.1 183 16 293.0 293.2 279.8 296.7 1.21 8 572 4331 -21.7 -23.5 85 1.8 -22.1 182 16 295.0 295.2 280.6 298.2 1.00 9 548 4646 -23.1 -27.3 68 4.2 -23.8 181 16 297.0 297.1 281.1 299.4 0.74 10 502 5281 -28.1 -35.1 51 7.0 -28.9 180 17 298.4 298.5 281.2 299.7 0.38 11 500 5310 -28.1 -35.1 51 7.0 -28.9 180 17 298.8 298.8 281.4 300.1 0.39 12 434 6314 -35.7 -43.7 44 8.0 -36.2 190 23 301.5 301.5 282.2 302.1 0.18 13 400 6880 -38.7 -47.7 38 9.0 -39.2 195 27 304.7 304.7 283.5 305.2 0.13 14 375 7319 -40.9 -49.9 37 9.0 -41.3 196 28 307.5 307.5 284.5 307.8 0.11 15 300 8790 -53.3 -61.3 37 8.0 -53.4 200 33 310.2 310.2 285.4 310.3 0.03 16 280 9231 -56.3 -64.3 36 8.0 -56.4 200 31 312.1 312.1 286.1 312.2 0.02 17 259 9725 -56.7 -64.7 36 8.0 -56.8 193 30 318.5 318.5 288.3 318.6 0.02 18 250 9950 -55.5 -63.5 36 8.0 -55.6 190 29 323.6 323.6 289.9 323.7 0.03 19 230 10482 -53.5 -61.5 37 8.0 -53.7 188 27 334.4 334.4 292.9 334.6 0.04 20 200 11380 -52.7 -62.7 29 10.0 -52.9 185 23 349.3 349.3 296.5 349.5 0.04 21 175 12243 -51.1 -63.1 23 12.0 -51.5 197 22 365.5 365.6 299.8 365.8 0.05 22 150 13240 -52.7 -66.7 17 14.0 -53.1 210 21 379.3 379.3 302.2 379.4 0.03 23 111 15170 -55.9 -72.9 10 17.0 -56.3 407.4 407.4 306.2 407.5 0.02 TRP 280 9231 -56.3 -64.3 36 8.0 -56.4 200 31 312.1 312.1 286.1 312.2 0.02 WND Sounding variables and indices 1000-500 mb thick: 5339.00 m Freezing level: 870.36 mb = 1100.64 m = 3610.98 ft Wetbulb zero: 887.80 mb = 940.16 m = 3084.47 ft Precipitable water: 0.52 inches Sfc-500 mean rel hum: 80.50 % Est. max temperature: 11.87 C = 53.36 F Sfc-Lift cond lev (LCL): 972.56 mb = 199.33 m = 653.96 ft T: 6.17 C 700-500 lapse rate: 7.05 C/km ThetaE index: 3.19 C Layer 925.0- 850.0 mb Conv cond level (CCL): 899.64 mb = 833.29 m = 2733.85 ft Mean mixing ratio: 4.76 g/kg Conv temperature: 8.61 C = 47.51 F Cap Strength: 3.67 C Lifted Index: 3.93 C Risk: None Lifted Index @300 mb: 10.37 C Lifted Index @700 mb: 1.49 C Showalter Index: 3.87 C Risk: None Total Totals Index: 52.60 C Risk: Scattered heavy thunderstorms Vertical Totals Index: 27.40 C Cross Totals Index: 25.20 C K Index: 21.50 Risk: 20-40 % chance of thunderstorms Sweat Index: 111.00 Risk: None Energy Index: 0.86 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 8.33 J/kg Max Up Vert Vel: 4.08 m/s Conv Inhibition (B-): 10734.57 J/kg Cap Strength: 3.59 C Lift Cond Lev (LCL): 909.34 mb = 746.72 m = 2449.84 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 215 at 11 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 ---------------------------------------------------------- 0 983 112 20 1 -0.3 -0.9 | 34 12 -6.4 -9.5 1 925 609 165 7 -1.8 6.8 | 77 8 -7.9 -1.8 2 850 1289 205 11 4.6 10.0 | 133 2 -1.5 1.4 3 700 2813 185 15 1.3 14.9 | 143 8 -4.8 6.3 4 500 5310 180 17 0.0 17.0 | 144 10 -6.1 8.4 5 400 6880 195 27 7.0 26.1 | 183 18 0.9 17.5 6 300 8790 200 33 11.3 31.0 | 193 23 5.2 22.4 7 280 9231 200 31 10.6 29.1 | 192 21 4.5 20.5 8 250 9950 190 29 5.0 28.6 | 177 20 -1.1 20.0 9 200 11380 185 23 2.0 22.9 | 164 15 -4.1 14.3 10 150 13240 210 21 10.5 18.2 | 205 11 4.4 9.6 Wind Parameters Mean winds (0-6000m): 185.4 at 14.1 knts Storm direction: 215.4 at 10.5 knts Shear (0-3000m) pos: 2.2 neg: 0.9 tot: 3.1 10-3/s Storm rel Dir Shear (0-3000m): 109.2 deg Storm rel helicity (0-3000m) pos: 33.9 neg: -0.5 tot: 33.3 m^2/s^2 ave: 11.1 10^-3 m/s^2 rel: 0.53 Storm rel vorticity (0-3000m) horiz: 4.4 stream: 2.3 10^-3/s Energy-Hel index: 0.00 Bulk Rich Number: 0.56 Bulk Shear: 14.81 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 ------------------------------------------------------------------------------- 500 160 4 57 9| 8.1 0.0 8.1| 27.7 0.0 27.7 55.4 0.75| 12.2 9.1 1000 176 6 70 7| 5.6 0.0 5.6| 32.4 0.0 32.4 32.4 0.69| 8.8 6.1 1500 190 8 80 5| 4.4 0.0 4.4| 33.6 0.0 33.6 22.4 0.66| 7.0 4.6 2000 193 9 93 4| 3.3 0.5 3.8| 33.8 0.0 33.8 16.9 0.61| 5.7 3.5 2500 192 10 107 4| 2.6 0.8 3.5| 33.8 -0.3 33.5 13.4 0.55| 5.0 2.8 3000 190 11 116 5| 2.2 0.9 3.1| 33.9 -0.5 33.3 11.1 0.53| 4.4 2.3 4000 188 12 127 6| 1.7 0.8 2.4| 34.1 -0.5 33.5 8.4 0.51| 3.4 1.7 5000 186 13 132 6| 1.3 0.7 2.0| 34.2 -0.5 33.6 6.7 0.49| 2.8 1.4 6000 185 14 138 7| 1.6 0.6 2.2| 49.0 -0.5 48.4 8.1 0.55| 2.9 1.6 Wrote GIF file: /home/apache/climate/data/raob//U2820/skewt/U2820.skewt.20251028.12.gif