UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025042912.upa.cvt Date: 1200Z 29 APR 25 Searching for U4688... Searching the city database file for: U4688 ... Date:1200Z 29 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 105 SFC 925 733 0.4 -2.2 83 2.6 -0.7 40 3 279.7 280.3 276.4 289.5 3.51 2 850 1408 -4.5 -8.1 76 3.6 -5.7 355 7 281.4 281.8 275.8 288.4 2.44 3 765 2232 -10.3 -13.3 79 3.0 -11.2 325 12 283.8 284.1 276.2 289.0 1.79 4 700 2914 -14.5 -18.1 74 3.6 -15.3 300 17 286.4 286.7 276.9 290.4 1.31 5 500 5370 -31.3 -34.7 72 3.4 -31.7 300 19 294.9 294.9 279.6 296.2 0.40 6 400 6920 -41.9 -45.0 72 3.1 -42.1 290 21 300.5 300.6 281.8 301.1 0.17 7 307 8653 -54.3 -58.0 64 3.7 -54.4 295 17 306.8 306.8 284.2 307.0 0.05 8 300 8800 -54.5 -58.2 64 3.7 -54.6 295 17 308.5 308.5 284.8 308.7 0.05 9 283 9174 -56.3 -59.8 65 3.5 -56.3 290 19 311.1 311.1 285.8 311.3 0.04 10 282 9196 -56.3 -59.8 65 3.5 -56.3 290 19 311.4 311.5 285.9 311.6 0.04 11 250 9970 -53.1 -57.1 62 4.0 -53.2 300 19 327.1 327.1 291.0 327.4 0.07 12 238 10290 -50.3 -54.5 61 4.2 -50.4 301 18 336.0 336.0 293.4 336.4 0.10 13 200 11430 -50.3 -56.3 49 6.0 -50.5 305 13 353.1 353.1 297.4 353.5 0.09 14 186 11904 -49.5 -56.5 44 7.0 -49.8 309 12 361.8 361.8 299.1 362.3 0.10 15 150 13310 -49.5 -59.5 30 10.0 -50.0 320 9 384.8 384.8 303.1 385.2 0.08 16 100 15960 -50.5 -66.5 13 16.0 -51.2 305 7 430.2 430.2 308.9 430.4 0.05 17 89 16718 -51.3 -68.3 11 17.0 -52.1 303 6 443.1 443.1 310.2 443.4 0.04 18 83 17171 -51.3 -68.3 11 17.0 -52.1 302 6 452.1 452.1 311.1 452.3 0.05 19 70 18280 -50.3 -68.3 10 18.0 -51.4 300 5 476.8 476.8 313.2 477.1 0.06 20 50 20480 -50.3 -70.3 8 20.0 -51.8 210 3 524.9 525.0 316.6 525.3 0.06 21 47 20883 -50.9 -70.9 8 20.0 -52.4 218 3 532.9 532.9 317.1 533.2 0.06 22 33 23188 -50.1 -72.1 6 22.0 -52.4 267 5 591.7 591.7 320.2 592.2 0.07 23 30 23810 -50.7 -72.7 6 22.0 -53.0 280 5 606.4 606.4 320.9 606.9 0.07 24 29 24031 -50.9 -72.9 6 22.0 -53.2 291 5 611.8 611.8 321.2 612.3 0.07 25 26 24743 -51.1 -73.1 6 22.0 -53.6 328 6 630.6 630.6 321.9 631.2 0.07 26 24 25265 -50.9 -72.9 6 22.0 -53.6 354 6 645.8 645.8 322.6 646.5 0.08 27 20 26460 -48.5 -71.5 5 23.0 -52.2 55 7 687.7 687.8 324.1 688.8 0.12 28 18 27157 -46.3 -70.3 5 24.0 -51.1 715.7 715.8 325.0 717.1 0.16 29 17 27537 -45.5 -69.5 5 24.0 -50.7 730.1 730.1 325.4 731.8 0.19 30 15 28369 -46.9 -70.9 5 24.0 -52.0 752.0 752.1 326.0 753.7 0.18 31 11 30426 -46.5 -71.5 4 25.0 -52.8 823.2 823.3 327.8 825.5 0.22 TRP 283 9174 -56.3 -59.8 65 3.5 -56.3 290 19 311.1 311.1 285.8 311.3 0.04 WND Sounding variables and indices 1000-500 mb thick: 5265.00 m Freezing level: 918.88 mb = 788.20 m = 2585.93 ft Wetbulb zero: Below ground Precipitable water: 0.29 inches Sfc-500 mean rel hum: 75.05 % Est. max temperature: 4.10 C = 39.37 F Sfc-Lift cond lev (LCL): 888.18 mb = 1057.32 m = 3468.86 ft T: -1.95 C 700-500 lapse rate: 6.84 C/km ThetaE index: 1.11 C Layer 850.0- 765.0 mb Conv cond level (CCL): 814.47 mb = 1742.11 m = 5715.51 ft Mean mixing ratio: 2.81 g/kg Conv temperature: 3.02 C = 37.44 F Cap Strength: 1.89 C Lifted Index: 5.80 C Risk: None Lifted Index @300 mb: 13.98 C Lifted Index @700 mb: 1.89 C Showalter Index: 6.12 C Risk: None Total Totals Index: 50.00 C Risk: Scattered heavy thunderstorms Vertical Totals Index: 26.80 C Cross Totals Index: 23.20 C K Index: 15.10 Risk: < 20 % chance of thunderstorms Sweat Index: 53.00 Risk: None Energy Index: 1.59 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 7.59 J/kg Max Up Vert Vel: 3.90 m/s Conv Inhibition (B-): 68545.92 J/kg Cap Strength: 5.71 C Lift Cond Lev (LCL): 832.93 mb = 1566.78 m = 5140.30 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 333 at 12 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 ---------------------------------------------------------- 0 925 733 40 3 -1.9 -2.3 | 138 11 -7.3 8.2 1 850 1408 355 7 0.6 -7.0 | 126 6 -4.7 3.5 2 700 2914 300 17 14.7 -8.5 | 258 10 9.4 2.0 3 500 5370 300 19 16.5 -9.5 | 265 11 11.1 1.0 4 400 6920 290 21 19.7 -7.2 | 257 15 14.4 3.3 5 300 8800 295 17 15.4 -7.2 | 252 11 10.1 3.3 6 283 9174 290 19 17.9 -6.5 | 252 13 12.5 4.0 7 250 9970 300 19 16.5 -9.5 | 265 11 11.1 1.0 8 200 11430 305 13 10.6 -7.5 | 241 6 5.3 3.0 9 150 13310 320 9 5.8 -6.9 | 187 4 0.4 3.6 10 100 15960 305 7 5.7 -4.0 | 183 6 0.4 6.4 11 70 18280 300 5 4.3 -2.5 | 173 8 -1.0 8.0 12 50 20480 210 3 1.5 2.6 | 164 14 -3.8 13.0 13 30 23810 280 5 4.9 -0.9 | 178 10 -0.4 9.6 14 20 26460 55 7 -5.7 -4.0 | 120 13 -11.1 6.4 Wind Parameters Mean winds (0-6000m): 302.9 at 15.6 knts Storm direction: 332.9 at 11.7 knts Shear (0-3000m) pos: 0.0 neg: 3.2 tot: 3.2 10-3/s Storm rel Dir Shear (0-3000m): 122.5 deg Storm rel helicity (0-3000m) pos: 1.7 neg: -7.4 tot: -5.7 m^2/s^2 ave: -1.9 10^-3 m/s^2 rel: -0.02 Storm rel vorticity (0-3000m) horiz: 3.7 stream: -0.1 10^-3/s Energy-Hel index: 0.00 Bulk Rich Number: 0.27 Bulk Shear: 28.60 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 13 4 134 9| 0.0 3.9 3.9| 0.0 -4.9 -4.9 -9.8 -0.48| 4.1 -2.0 1000 359 6 130 7| 0.0 4.1 4.1| 0.0 -5.5 -5.5 -5.5 -0.28| 4.3 -1.2 1500 345 8 133 5| 0.0 4.1 4.1| 0.5 -5.5 -5.0 -3.3 0.00| 4.6 0.0 2000 329 9 167 3| 0.0 4.2 4.2| 0.6 -6.2 -5.5 -2.8 -0.01| 4.9 -0.1 2500 318 11 217 3| 0.0 3.7 3.7| 1.1 -7.4 -6.4 -2.5 -0.03| 4.4 -0.1 3000 313 12 235 4| 0.0 3.2 3.2| 1.7 -7.4 -5.7 -1.9 -0.02| 3.7 -0.1 4000 308 13 248 6| 0.0 2.5 2.5| 3.1 -7.4 -4.3 -1.1 0.01| 2.9 0.0 5000 306 15 254 7| 0.0 2.1 2.1| 3.9 -8.5 -4.6 -0.9 0.00| 2.5 0.0 6000 303 16 256 8| 0.0 1.9 1.9| 3.9 -12.6 -8.7 -1.4 -0.04| 2.3 -0.1 Wrote GIF file: /home/apache/climate/data/raob//U4688/skewt/U4688.skewt.20250429.12.gif