UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025043012.upa.cvt Date: 1200Z 30 APR 25 Searching for U3921... Searching the city database file for: U3921 ... Date:1200Z 30 APR 25 Station: U3921 WMO ident: 23921 Latitude: 60.68 Longitude: 60.43 ------------------------------------------------------------------------------- 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 58 220 9 SFC 996 91 8.4 1.4 61 7.0 5.1 220 9 281.9 282.6 278.5 293.7 4.25 2 925 694 3.2 -2.8 65 6.0 0.7 215 17 282.6 283.2 277.7 292.1 3.36 3 865 1234 -1.3 -4.2 81 2.9 -2.4 223 27 283.4 283.9 277.9 292.6 3.23 4 850 1374 -2.3 -4.9 82 2.6 -3.3 225 29 283.7 284.3 278.0 292.6 3.12 5 814 1717 -4.3 -7.2 80 2.9 -5.4 231 29 285.1 285.6 278.2 293.0 2.73 6 700 2892 -10.7 -15.0 71 4.3 -11.9 250 29 290.6 290.9 279.4 295.8 1.70 7 663 3307 -13.3 -18.3 66 5.0 -14.6 250 30 292.3 292.5 279.7 296.4 1.36 8 500 5390 -28.1 -36.1 46 8.0 -29.0 250 36 298.8 298.8 281.3 300.0 0.35 9 400 6950 -40.3 -52.3 27 12.0 -40.8 245 44 302.6 302.6 282.5 302.9 0.08 10 358 7697 -45.9 -58.9 22 13.0 -46.2 247 48 304.9 304.9 283.4 305.0 0.04 11 314 8557 -52.7 -64.7 22 12.0 -52.9 249 52 307.0 307.0 284.2 307.1 0.02 12 300 8850 -54.3 -66.3 22 12.0 -54.5 250 54 308.8 308.8 284.9 308.9 0.02 13 282 9243 -56.3 -68.3 21 12.0 -56.4 250 50 311.4 311.5 285.9 311.5 0.01 14 250 10010 -52.9 -64.9 22 12.0 -53.1 255 46 327.4 327.4 291.0 327.5 0.02 15 229 10582 -49.7 -62.7 20 13.0 -50.1 253 46 340.6 340.6 294.5 340.8 0.04 16 200 11470 -49.5 -63.5 18 14.0 -49.9 250 46 354.4 354.4 297.6 354.5 0.04 17 150 13360 -47.9 -64.9 12 17.0 -48.6 260 33 387.5 387.5 303.5 387.7 0.04 18 110 15404 -47.3 -67.3 8 20.0 -48.3 249 21 424.6 424.6 308.3 424.8 0.04 19 101 15965 -49.7 -69.7 8 20.0 -50.6 245 17 430.5 430.5 308.9 430.6 0.03 20 100 16030 -49.7 -69.7 8 20.0 -50.6 245 17 431.7 431.7 309.0 431.9 0.03 21 70 18380 -47.9 -68.9 7 21.0 -49.4 250 23 481.9 481.9 313.6 482.2 0.05 22 62 19180 -46.5 -68.5 6 22.0 -48.4 248 20 502.0 502.1 315.1 502.4 0.06 23 53 20210 -50.1 -73.1 5 23.0 -51.7 246 16 516.7 516.7 316.1 517.0 0.04 24 50 20590 -49.7 -73.7 4 24.0 -51.4 245 15 526.4 526.4 316.7 526.6 0.04 25 30 23930 -50.3 -75.3 4 25.0 -52.7 355 9 607.5 607.5 321.0 607.9 0.05 26 20 26590 -49.1 -74.1 4 25.0 -52.7 685.9 685.9 324.0 686.6 0.08 27 19 26927 -48.9 -73.9 4 25.0 -52.7 696.6 696.7 324.3 697.4 0.09 TRP 282 9243 -56.3 -68.3 21 12.0 -56.4 250 50 311.4 311.5 285.9 311.5 0.01 WND Sounding variables and indices 1000-500 mb thick: 5332.00 m Freezing level: 882.33 mb = 1078.33 m = 3537.77 ft Wetbulb zero: 911.29 mb = 814.32 m = 2671.63 ft Precipitable water: 0.44 inches Sfc-500 mean rel hum: 65.88 % Est. max temperature: 10.42 C = 50.75 F Sfc-Lift cond lev (LCL): 894.92 mb = 960.46 m = 3151.06 ft T: 0.98 C 700-500 lapse rate: 6.97 C/km ThetaE index: 1.65 C Layer 925.0- 865.0 mb Conv cond level (CCL): 837.06 mb = 1495.39 m = 4906.09 ft Mean mixing ratio: 3.66 g/kg Conv temperature: 10.76 C = 51.37 F Cap Strength: 3.67 C Lifted Index: 6.10 C Risk: None Lifted Index @300 mb: 11.48 C Lifted Index @700 mb: 3.17 C Showalter Index: 6.16 C Risk: None Total Totals Index: 49.00 C Risk: Scattered heavy thunderstorms Vertical Totals Index: 25.80 C Cross Totals Index: 23.20 C K Index: 16.60 Risk: < 20 % chance of thunderstorms Sweat Index: 171.83 Risk: None Energy Index: 1.52 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 3.50 J/kg Max Up Vert Vel: 2.65 m/s Conv Inhibition (B-): 56459.01 J/kg Cap Strength: 6.13 C Lift Cond Lev (LCL): 860.30 mb = 1277.93 m = 4192.63 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 273 at 22 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 ---------------------------------------------------------- 0 996 91 220 9 5.8 6.9 | 116 18 -16.2 8.1 1 925 694 215 17 9.8 13.9 | 141 19 -12.3 15.1 2 850 1374 225 29 20.5 20.5 | 176 22 -1.5 21.7 3 700 2892 250 29 27.3 9.9 | 205 12 5.2 11.1 4 500 5390 250 36 33.8 12.3 | 221 18 11.8 13.5 5 400 6950 245 44 39.9 18.6 | 222 27 17.9 19.8 6 300 8850 250 54 50.7 18.5 | 236 35 28.7 19.6 7 282 9243 250 50 47.0 17.1 | 234 31 25.0 18.3 8 250 10010 255 46 44.4 11.9 | 240 26 22.4 13.1 9 200 11470 250 46 43.2 15.7 | 231 27 21.2 16.9 10 150 13360 260 33 32.5 5.7 | 237 13 10.5 6.9 11 100 16030 245 17 15.4 7.2 | 142 11 -6.6 8.4 12 70 18380 250 23 21.6 7.9 | 177 9 -0.4 9.0 13 50 20590 245 15 13.6 6.3 | 132 11 -8.4 7.5 14 30 23930 355 9 0.8 -9.0 | 70 23 -21.2 -7.8 Wind Parameters Mean winds (0-6000m): 243.1 at 29.4 knts Storm direction: 273.1 at 22.1 knts Shear (0-3000m) pos: 3.2 neg: 1.1 tot: 4.4 10-3/s Storm rel Dir Shear (0-3000m): 90.6 deg Storm rel helicity (0-3000m) pos: 143.5 neg: 0.0 tot: 143.5 m^2/s^2 ave: 47.8 10^-3 m/s^2 rel: 0.86 Storm rel vorticity (0-3000m) horiz: 5.8 stream: 5.0 10^-3/s Energy-Hel index: 0.00 Bulk Rich Number: 0.07 Bulk Shear: 48.39 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 ------------------------------------------------------------------------------- 500 217 12 127 18| 0.0 6.9 6.9| 31.7 0.0 31.7 63.5 0.98| 6.9 6.8 1000 218 16 138 18| 4.4 3.4 7.8| 76.1 0.0 76.1 76.1 0.98| 7.9 7.8 1500 221 20 151 18| 4.9 2.3 7.2|111.4 0.0 111.4 74.2 0.95| 7.7 7.4 2000 225 22 159 18| 4.0 1.7 5.7|124.8 0.0 124.8 62.4 0.91| 6.9 6.2 2500 229 24 166 17| 3.5 1.4 4.9|136.2 0.0 136.2 54.5 0.87| 6.3 5.5 3000 233 25 171 16| 3.2 1.1 4.4|143.5 0.0 143.5 47.8 0.86| 5.8 5.0 4000 238 26 180 15| 2.4 1.2 3.6|149.9 0.0 149.9 37.5 0.84| 4.7 4.0 5000 241 28 189 15| 1.9 1.2 3.1|156.4 0.0 156.4 31.3 0.82| 4.1 3.3 6000 243 29 196 15| 1.6 1.4 3.0|159.9 0.0 159.9 26.7 0.75| 3.8 2.8 Wrote GIF file: /home/apache/climate/data/raob//U3921/skewt/U3921.skewt.20250430.12.gif