UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025041812.upa.cvt Date: 1200Z 18 APR 25 Searching for U4688... Searching the city database file for: U4688 ... Date:1200Z 18 APR 25 Station: U4688 WMO ident: 24688 Latitude: 63.27 Longitude: 143.15 ------------------------------------------------------------------------------- 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 125 SFC 925 736 -7.7 -15.7 53 8.0 -9.6 250 1 271.4 271.6 267.9 274.9 1.21 2 900 951 -5.3 -12.3 58 7.0 -7.3 273 7 276.0 276.3 271.6 280.7 1.65 3 850 1400 -8.7 -16.7 52 8.0 -10.6 320 19 277.0 277.2 271.5 280.6 1.22 4 778 2076 -15.3 -19.4 71 4.1 -16.2 325 20 277.0 277.2 271.2 280.1 1.06 5 763 2222 -15.7 -19.5 73 3.8 -16.5 326 20 278.2 278.3 271.9 281.3 1.07 6 700 2868 -17.9 -24.9 54 7.0 -19.1 330 21 282.7 282.8 273.9 284.9 0.72 7 685 3030 -17.9 -27.9 41 10.0 -19.5 331 23 284.4 284.5 274.6 286.2 0.56 8 650 3420 -20.9 -32.9 33 12.0 -22.4 334 27 285.3 285.4 274.8 286.5 0.37 9 521 5028 -29.3 -42.3 27 13.0 -30.4 348 46 293.8 293.9 278.8 294.4 0.18 10 500 5320 -31.9 -44.9 26 13.0 -32.8 350 50 294.1 294.2 278.9 294.6 0.14 11 400 6860 -43.1 -54.1 29 11.0 -43.5 350 68 299.0 299.0 281.0 299.2 0.06 12 364 7489 -48.1 -58.3 30 10.2 -48.3 350 71 300.5 300.5 281.6 300.6 0.04 13 353 7691 -49.7 -59.7 30 10.0 -49.9 350 69 301.0 301.0 281.8 301.1 0.03 14 324 8250 -51.7 -61.7 29 10.0 -51.9 350 62 305.7 305.7 283.7 305.8 0.03 15 300 8750 -51.5 -61.5 29 10.0 -51.7 345 52 312.8 312.8 286.4 312.9 0.03 16 287 9037 -52.1 -62.1 29 10.0 -52.3 341 48 315.9 315.9 287.4 316.0 0.03 17 260 9682 -48.9 -59.9 27 11.0 -49.2 333 39 329.6 329.7 291.7 329.8 0.05 18 250 9940 -49.3 -60.3 27 11.0 -49.6 330 35 332.8 332.8 292.5 333.0 0.05 19 200 11410 -47.5 -60.5 21 13.0 -48.0 300 29 357.6 357.6 298.2 357.8 0.06 20 150 13300 -48.5 -63.5 16 15.0 -49.1 295 23 386.5 386.5 303.3 386.7 0.05 21 101 15895 -49.3 -65.3 14 16.0 -50.1 266 17 431.2 431.3 309.0 431.6 0.06 22 100 15960 -49.3 -65.3 14 16.0 -50.2 265 17 432.5 432.5 309.1 432.8 0.06 23 86 16941 -52.3 -68.3 13 16.0 -53.0 261 17 445.5 445.5 310.4 445.7 0.05 24 70 18270 -52.9 -69.9 11 17.0 -53.8 255 17 471.2 471.2 312.8 471.5 0.04 25 50 20440 -53.5 -70.5 11 17.0 -54.6 265 5 517.4 517.4 316.2 517.8 0.06 26 30 23720 -53.5 -71.5 9 18.0 -55.2 305 11 598.8 598.8 320.6 599.4 0.08 27 21 26016 -54.3 -72.3 9 18.0 -56.3 358 9 660.7 660.7 323.1 661.5 0.10 28 20 26330 -53.7 -71.7 9 18.0 -56.0 5 9 671.8 671.9 323.5 672.8 0.12 29 11 30223 -47.1 -67.1 8 20.0 -52.9 821.0 821.3 327.8 825.3 0.42 30 10 30850 -49.1 -68.1 9 19.0 -54.4 836.3 836.5 328.2 840.4 0.40 TRP 324 8250 -51.7 -61.7 29 10.0 -51.9 350 62 305.7 305.7 283.7 305.8 0.03 WND 364 7489 -48.1 -58.3 30 10.2 -48.3 350 71 300.5 300.5 281.6 300.6 0.04 Sounding variables and indices 1000-500 mb thick: 5195.00 m Freezing level: Surface below freezing Wetbulb zero: Below ground Precipitable water: 0.14 inches Sfc-500 mean rel hum: 45.14 % Est. max temperature: -2.00 C = 28.40 F Sfc-Lift cond lev (LCL): 813.89 mb = 1731.37 m = 5680.27 ft T: -11.94 C 700-500 lapse rate: 5.71 C/km ThetaE index: 0.61 C Layer 850.0- 763.0 mb Conv cond level (CCL): 714.77 mb = 2711.57 m = 8896.12 ft Mean mixing ratio: 1.37 g/kg Conv temperature: 2.21 C = 35.97 F Cap Strength: 12.05 C Lifted Index: 12.08 C Risk: None Lifted Index @300 mb: 23.30 C Lifted Index @700 mb: 4.81 C Showalter Index: 11.56 C Risk: None Total Totals Index: 38.40 C Risk: None Vertical Totals Index: 23.20 C Cross Totals Index: 15.20 C K Index: -0.50 Risk: None Sweat Index: 88.00 Risk: None Energy Index: 2.93 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 17.51 J/kg Max Up Vert Vel: 5.92 m/s Conv Inhibition (B-): 64412.60 J/kg Cap Strength: 12.06 C Lift Cond Lev (LCL): 776.76 mb = 2087.55 m = 6848.82 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 13 at 26 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 ---------------------------------------------------------- 0 925 736 250 1 0.9 0.3 | 195 27 6.9 25.8 1 850 1400 320 19 12.2 -14.6 | 239 21 18.2 10.9 2 700 2868 330 21 10.5 -18.2 | 246 18 16.5 7.2 3 500 5320 350 50 8.7 -49.2 | 328 28 14.7 -23.8 4 400 6860 350 68 11.8 -67.0 | 337 45 17.8 -41.5 5 364 7489 350 71 12.3 -69.9 | 338 48 18.3 -44.5 6 324 8250 350 62 10.8 -61.1 | 335 39 16.8 -35.6 7 300 8750 345 52 13.5 -50.2 | 322 32 19.5 -24.8 8 250 9940 330 35 17.5 -30.3 | 282 24 23.5 -4.9 9 200 11410 300 29 25.1 -14.5 | 251 33 31.1 10.9 10 150 13300 295 23 20.8 -9.7 | 240 31 26.8 15.7 11 100 15960 265 17 16.9 1.5 | 220 35 22.9 26.9 12 70 18270 255 17 16.4 4.4 | 217 37 22.4 29.8 13 50 20440 265 5 5.0 0.4 | 203 28 11.0 25.9 14 30 23720 305 11 9.0 -6.3 | 218 24 15.0 19.1 15 20 26330 5 9 -0.8 -9.0 | 198 17 5.2 16.5 Wind Parameters Mean winds (0-6000m): 343.3 at 34.8 knts Storm direction: 13.3 at 26.1 knts Shear (0-3000m) pos: 5.4 neg: 0.0 tot: 5.4 10-3/s Storm rel Dir Shear (0-3000m): 85.4 deg Storm rel helicity (0-3000m) pos: 203.1 neg: 0.0 tot: 203.1 m^2/s^2 ave: 67.7 10^-3 m/s^2 rel: 0.90 Storm rel vorticity (0-3000m) horiz: 6.4 stream: 5.7 10^-3/s Energy-Hel index: 0.02 Bulk Rich Number: 0.17 Bulk Shear: 102.97 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 ------------------------------------------------------------------------------- 500 321 8 209 22| 14.4 0.0 14.4|106.8 0.0 106.8 213.7 0.95| 16.0 15.2 1000 319 13 223 21| 9.9 0.0 9.9|142.8 0.0 142.8 142.8 0.89| 11.9 10.6 1500 321 15 229 21| 6.8 0.0 6.8|147.2 0.0 147.2 98.1 0.88| 8.4 7.4 2000 323 17 233 20| 5.3 0.0 5.3|151.3 0.0 151.3 75.7 0.86| 6.7 5.7 2500 325 18 236 19| 5.2 0.0 5.2|173.6 0.0 173.6 69.4 0.88| 6.3 5.6 3000 328 20 241 19| 5.4 0.0 5.4|203.1 0.0 203.1 67.7 0.90| 6.4 5.7 4000 334 24 257 17| 5.6 0.0 5.6|268.0 0.0 268.0 67.0 0.90| 6.4 5.8 5000 340 29 277 16| 5.7 0.0 5.7|325.6 0.0 325.6 65.1 0.85| 6.5 5.5 6000 343 35 296 18| 4.7 1.0 5.7|357.6 0.0 357.6 59.6 0.76| 6.4 4.8 Wrote GIF file: /home/apache/climate/data/raob//U4688/skewt/U4688.skewt.20250418.12.gif