UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025041800.upa.cvt Date: 0000Z 18 APR 25 Searching for U9231... Searching the city database file for: U9231 ... Date:0000Z 18 APR 25 Station: U9231 WMO ident: 29231 Latitude: 58.30 Longitude: 82.88 ------------------------------------------------------------------------------- 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 42 280 1 SFC 996 73 -6.5 -8.8 84 2.3 -7.2 280 1 267.0 267.3 266.2 272.3 1.97 2 925 640 -10.1 -12.4 83 2.3 -10.7 290 5 269.0 269.2 267.0 273.4 1.59 3 850 1296 -15.5 -17.8 82 2.3 -16.0 300 9 269.9 270.1 266.7 273.0 1.11 4 758 2147 -22.1 -24.5 81 2.4 -22.5 300 14 271.8 271.9 267.2 273.8 0.69 5 700 2728 -24.1 -28.8 65 4.7 -24.7 300 17 275.8 275.9 269.5 277.3 0.51 6 675 2992 -25.1 -30.0 64 4.9 -25.7 297 18 277.6 277.6 270.5 279.0 0.47 7 586 4005 -30.9 -35.9 61 5.0 -31.3 284 23 282.3 282.3 273.0 283.2 0.30 8 500 5110 -39.1 -45.1 53 6.0 -39.4 270 29 285.4 285.4 274.5 285.8 0.14 9 462 5648 -42.9 -48.9 52 6.0 -43.1 261 30 287.2 287.2 275.3 287.5 0.10 10 411 6430 -46.9 -52.9 50 6.0 -47.1 248 31 291.8 291.8 277.6 292.0 0.07 11 400 6610 -47.5 -53.5 50 6.0 -47.7 245 31 293.3 293.3 278.4 293.5 0.07 12 356 7373 -49.5 -57.5 39 8.0 -49.7 240 29 300.5 300.5 281.6 300.7 0.05 13 300 8500 -45.3 -59.3 19 14.0 -45.7 235 27 321.5 321.5 289.3 321.7 0.04 14 273 9140 -43.1 -61.1 12 18.0 -43.7 238 27 333.5 333.5 292.7 333.6 0.04 15 250 9740 -42.7 -62.7 9 20.0 -43.5 240 27 342.6 342.6 295.0 342.7 0.03 16 200 11240 -42.3 -65.3 6 23.0 -43.3 240 25 365.8 365.8 299.8 365.9 0.03 17 186 11732 -42.1 -65.1 6 23.0 -43.2 240 24 373.8 373.8 301.2 373.9 0.03 18 150 13180 -44.9 -67.9 6 23.0 -45.9 240 23 392.7 392.7 304.2 392.8 0.03 19 100 15870 -46.7 -69.7 6 23.0 -47.9 255 21 437.5 437.5 309.6 437.7 0.03 20 98 16004 -46.5 -69.5 6 23.0 -47.8 256 21 440.4 440.4 309.9 440.6 0.03 21 77 17593 -49.3 -73.3 4 24.0 -50.5 262 18 466.0 466.0 312.3 466.2 0.02 22 70 18220 -47.3 -71.3 5 24.0 -48.9 265 17 483.2 483.2 313.7 483.4 0.04 23 50 20430 -49.9 -72.9 5 23.0 -51.5 275 15 525.9 525.9 316.7 526.1 0.04 24 45 21122 -50.7 -73.7 5 23.0 -52.4 277 15 540.0 540.0 317.5 540.3 0.04 25 30 23770 -51.5 -73.5 6 22.0 -53.7 285 15 604.2 604.3 320.8 604.7 0.06 26 20 26400 -52.1 -74.1 5 22.0 -54.9 295 11 676.7 676.7 323.7 677.4 0.08 27 17 27450 -53.1 -75.1 5 22.0 -55.9 705.7 705.7 324.6 706.4 0.08 28 13 29196 -48.7 -70.7 6 22.0 -53.5 777.2 777.3 326.7 779.3 0.21 29 10 30917 -49.9 -72.9 5 23.0 -55.2 833.3 833.4 328.1 835.3 0.20 TRP 356 7373 -49.5 -57.5 39 8.0 -49.7 240 29 300.5 300.5 281.6 300.7 0.05 WND Sounding variables and indices 1000-500 mb thick: 5068.00 m Freezing level: Surface below freezing Wetbulb zero: Below ground Precipitable water: 0.18 inches Sfc-500 mean rel hum: 70.52 % Est. max temperature: -3.47 C = 25.75 F Sfc-Lift cond lev (LCL): 960.17 mb = 353.89 m = 1161.04 ft T: -8.28 C 700-500 lapse rate: 6.30 C/km ThetaE index: 0.34 C Layer 850.0- 758.0 mb Conv cond level (CCL): 897.61 mb = 873.22 m = 2864.85 ft Mean mixing ratio: 1.69 g/kg Conv temperature: -4.14 C = 24.55 F Cap Strength: 8.51 C Lifted Index: 10.39 C Risk: None Lifted Index @300 mb: 34.43 C Lifted Index @700 mb: 4.01 C Showalter Index: 10.33 C Risk: None Total Totals Index: 44.90 C Risk: Scattered moderate thunderstorms Vertical Totals Index: 23.60 C Cross Totals Index: 21.30 C K Index: 1.10 Risk: None Sweat Index: 47.00 Risk: None Energy Index: 2.65 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 7.67 J/kg Max Up Vert Vel: 3.92 m/s Conv Inhibition (B-): 79216.24 J/kg Cap Strength: 10.36 C Lift Cond Lev (LCL): 911.42 mb = 754.77 m = 2476.25 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 310 at 14 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 73 280 1 1.0 -0.2 | 132 13 -9.6 8.6 1 925 640 290 5 4.7 -1.7 | 140 9 -5.9 7.1 2 850 1296 300 9 7.8 -4.5 | 147 5 -2.8 4.3 3 700 2728 300 17 14.7 -8.5 | 266 4 4.2 0.3 4 500 5110 270 29 29.0 -0.0 | 245 20 18.4 8.8 5 400 6610 245 31 28.1 13.1 | 219 28 17.5 21.9 6 356 7373 240 29 25.1 14.5 | 212 27 14.5 23.3 7 300 8500 235 27 22.1 15.5 | 205 27 11.5 24.3 8 250 9740 240 27 23.4 13.5 | 210 26 12.8 22.3 9 200 11240 240 25 21.7 12.5 | 207 24 11.1 21.3 10 150 13180 240 23 19.9 11.5 | 205 22 9.3 20.3 11 100 15870 255 21 20.3 5.4 | 214 17 9.7 14.2 12 70 18220 265 17 16.9 1.5 | 212 12 6.4 10.3 13 50 20430 275 15 14.9 -1.3 | 210 9 4.4 7.5 14 30 23770 285 15 14.5 -3.9 | 219 6 3.9 4.9 15 20 26400 295 11 10.0 -4.6 | 172 4 -0.6 4.1 Wind Parameters Mean winds (0-6000m): 279.7 at 18.3 knts Storm direction: 309.7 at 13.7 knts Shear (0-3000m) pos: 1.6 neg: 1.4 tot: 3.1 10-3/s Storm rel Dir Shear (0-3000m): 132.0 deg Storm rel helicity (0-3000m) pos: 11.4 neg: -0.3 tot: 11.2 m^2/s^2 ave: 3.7 10^-3 m/s^2 rel: 0.46 Storm rel vorticity (0-3000m) horiz: 3.2 stream: 1.4 10^-3/s Energy-Hel index: 0.00 Bulk Rich Number: 0.24 Bulk Shear: 32.23 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 ------------------------------------------------------------------------------- 500 288 3 135 11| 3.6 0.0 3.6| 4.4 0.0 4.4 8.8 0.41| 3.7 1.5 1000 292 4 138 10| 3.4 0.0 3.4| 6.2 0.0 6.2 6.2 0.34| 3.5 1.2 1500 296 6 140 8| 3.3 0.0 3.3| 7.5 0.0 7.5 5.0 0.34| 3.3 1.1 2000 298 7 143 7| 2.5 0.7 3.2| 9.2 0.0 9.2 4.6 0.45| 3.2 1.4 2500 298 9 149 5| 2.0 1.1 3.1| 10.9 0.0 10.9 4.4 0.52| 3.2 1.7 3000 298 10 159 4| 1.6 1.4 3.1| 11.4 -0.3 11.2 3.7 0.46| 3.2 1.4 4000 294 13 202 4| 1.2 1.8 3.0| 11.4 -4.4 7.0 1.8 0.27| 3.3 0.9 5000 287 16 228 6| 1.0 2.1 3.1| 11.4 -17.2 -5.8 -1.2 0.12| 3.4 0.4 6000 280 18 233 9| 0.8 2.1 2.9| 11.4 -59.4 -47.9 -8.0 -0.07| 3.6 -0.3 Wrote GIF file: /home/apache/climate/data/raob//U9231/skewt/U9231.skewt.20250418.00.gif