UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025101812.upa.cvt Date: 1200Z 18 OCT 25 Searching for U4641... Searching the city database file for: U4641 ... Date:1200Z 18 OCT 25 Station: U4641 WMO ident: 24641 Latitude: 63.77 Longitude: 121.62 ------------------------------------------------------------------------------- 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 ------------------------------------------------------------------------------- SFC 1016 109 -4.1 -6.4 84 2.3 -4.8 260 1 267.8 268.2 267.4 274.1 2.33 1 1000 234 -4.9 -8.4 76 3.5 -6.0 290 3 268.2 268.6 267.2 273.8 2.02 2 925 842 -8.5 -10.4 86 1.9 -9.1 295 15 270.6 270.9 268.5 275.8 1.87 3 907 995 -9.7 -11.8 85 2.1 -10.3 307 14 270.9 271.2 268.4 275.6 1.70 4 887 1168 -6.5 -8.2 88 1.7 -7.1 320 13 276.0 276.3 272.6 282.4 2.32 5 871 1311 -8.3 -9.5 91 1.2 -8.7 331 12 275.5 275.9 272.0 281.5 2.13 6 869 1329 -7.9 -9.3 90 1.4 -8.4 332 12 276.1 276.5 272.4 282.2 2.17 7 861 1400 -10.7 -13.6 79 2.9 -11.5 337 12 273.9 274.2 270.1 278.3 1.55 8 850 1500 -9.1 -15.1 62 6.0 -10.6 345 11 276.6 276.8 271.5 280.6 1.39 9 830 1684 -7.9 -17.9 44 10.0 -10.4 344 12 279.8 280.0 272.9 283.1 1.13 10 814 1835 -7.1 -13.1 62 6.0 -8.8 344 12 282.2 282.5 275.2 287.2 1.71 11 804 1931 -7.7 -11.4 75 3.7 -8.8 344 13 282.5 282.9 275.7 288.3 1.99 12 740 2571 -11.5 -13.9 82 2.4 -12.2 341 15 285.2 285.5 276.9 290.4 1.76 13 700 2994 -13.9 -17.8 72 3.9 -14.9 340 17 287.1 287.3 277.2 291.1 1.35 14 664 3393 -14.9 -21.9 55 7.0 -16.4 338 18 290.3 290.5 278.3 293.4 1.00 15 624 3859 -18.3 -22.1 72 3.8 -19.1 337 19 291.6 291.8 279.0 294.9 1.04 16 530 5060 -24.9 -42.9 17 18.0 -26.6 332 22 297.7 297.7 280.6 298.2 0.16 17 523 5156 -25.5 -43.5 17 18.0 -27.2 331 22 298.1 298.1 280.7 298.6 0.16 18 500 5480 -28.1 -41.1 28 13.0 -29.3 330 23 298.8 298.8 281.1 299.5 0.21 19 439 6399 -35.5 -43.5 44 8.0 -36.1 315 23 300.7 300.8 281.9 301.4 0.19 20 400 7040 -40.1 -48.1 42 8.0 -40.5 305 23 302.9 302.9 282.7 303.3 0.12 21 350 7937 -47.5 -55.5 39 8.0 -47.7 326 21 304.7 304.7 283.4 304.9 0.06 22 300 8940 -54.5 -61.5 42 7.0 -54.6 350 19 308.5 308.5 284.8 308.7 0.03 23 275 9494 -58.5 -64.5 46 6.0 -58.6 355 21 310.5 310.5 285.5 310.6 0.02 24 250 10090 -61.5 -67.5 45 6.0 -61.6 360 23 314.6 314.6 287.0 314.7 0.02 25 236 10445 -63.7 -69.7 44 6.0 -63.7 360 23 316.5 316.5 287.6 316.6 0.01 26 220 10874 -64.1 -70.1 44 6.0 -64.1 356 21 322.3 322.3 289.5 322.4 0.01 27 200 11460 -61.3 -67.3 45 6.0 -61.4 350 19 335.7 335.7 293.3 335.8 0.02 28 175 12292 -58.3 -64.3 46 6.0 -58.4 355 18 353.7 353.7 297.4 353.9 0.04 29 150 13260 -58.5 -64.5 46 6.0 -58.6 360 17 369.3 369.3 300.5 369.5 0.04 30 137 13830 -59.5 -66.5 40 7.0 -59.6 360 16 377.2 377.2 301.8 377.4 0.04 31 115 14935 -56.9 -64.9 36 8.0 -57.2 360 13 401.4 401.4 305.5 401.7 0.05 32 100 15820 -57.7 -66.7 31 9.0 -58.0 360 11 416.2 416.3 307.3 416.5 0.05 33 70 18060 -59.1 -70.1 23 11.0 -59.5 10 5 457.9 458.0 311.6 458.2 0.04 34 50 20170 -59.7 -72.7 17 13.0 -60.2 335 5 502.8 502.8 315.2 503.1 0.04 35 48 20425 -60.5 -73.5 17 13.0 -61.0 328 6 506.8 506.8 315.4 507.0 0.04 36 30 23380 -56.5 -71.5 13 15.0 -57.7 250 15 590.6 590.6 320.2 591.2 0.08 37 20 25968 -53.9 -70.9 11 17.0 -56.1 671.2 671.2 323.5 672.3 0.13 TRP 236 10445 -63.7 -69.7 44 6.0 -63.7 360 23 316.5 316.5 287.6 316.6 0.01 WND Sounding variables and indices 1000-500 mb thick: 5246.00 m Freezing level: Surface below freezing Wetbulb zero: Below ground Precipitable water: 0.30 inches Sfc-500 mean rel hum: 62.78 % Est. max temperature: 3.40 C = 38.13 F Sfc-Lift cond lev (LCL): 979.67 mb = 394.14 m = 1293.10 ft T: -5.85 C 700-500 lapse rate: 5.71 C/km ThetaE index: 3.90 C Layer 861.0- 850.0 mb Conv cond level (CCL): 861.12 mb = 1399.32 m = 4590.90 ft Mean mixing ratio: 1.97 g/kg Conv temperature: 2.06 C = 35.70 F Cap Strength: 19.77 C Lifted Index: 19.99 C Risk: None Lifted Index @300 mb: 23.97 C Lifted Index @700 mb: 12.80 C Showalter Index: 15.36 C Risk: None Total Totals Index: 32.00 C Risk: None Vertical Totals Index: 19.00 C Cross Totals Index: 13.00 C K Index: 0.00 Risk: None Sweat Index: 45.00 Risk: None Energy Index: 4.02 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 5.93 J/kg Max Up Vert Vel: 3.44 m/s Conv Inhibition (B-): 52669.91 J/kg Cap Strength: 19.94 C Lift Cond Lev (LCL): 924.74 mb = 844.23 m = 2769.74 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 1 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 1016 109 260 1 1.0 0.2 | 185 13 1.2 12.7 1 1000 234 290 3 2.8 -1.0 | 195 12 3.0 11.5 2 925 842 295 15 13.6 -6.3 | 246 15 13.8 6.2 3 850 1500 345 11 2.8 -10.6 | 239 4 3.1 1.9 4 700 2994 340 17 5.8 -16.0 | 300 7 6.0 -3.5 5 500 5480 330 23 11.5 -19.9 | 302 14 11.7 -7.4 6 400 7040 305 23 18.8 -13.2 | 272 19 19.0 -0.7 7 300 8940 350 19 3.3 -18.7 | 331 7 3.5 -6.2 8 250 10090 360 23 -0.0 -23.0 | 359 11 0.2 -10.5 9 236 10445 360 23 -0.0 -23.0 | 359 11 0.2 -10.5 10 200 11460 350 19 3.3 -18.7 | 331 7 3.5 -6.2 11 150 13260 360 17 -0.0 -17.0 | 357 5 0.2 -4.5 12 100 15820 360 11 -0.0 -11.0 | 188 2 0.2 1.5 13 70 18060 10 5 -0.9 -4.9 | 175 8 -0.7 7.6 14 50 20170 335 5 2.1 -4.5 | 196 8 2.3 8.0 15 30 23380 250 15 14.1 5.1 | 219 23 14.3 17.6 Wind Parameters Mean winds (0-6000m): 331.0 at 16.7 knts Storm direction: 1.0 at 12.5 knts Shear (0-3000m) pos: 2.0 neg: 1.0 tot: 3.0 10-3/s Storm rel Dir Shear (0-3000m): 115.2 deg Storm rel helicity (0-3000m) pos: 55.7 neg: -1.6 tot: 54.1 m^2/s^2 ave: 18.0 10^-3 m/s^2 rel: 0.58 Storm rel vorticity (0-3000m) horiz: 5.5 stream: 3.2 10^-3/s Energy-Hel index: 0.00 Bulk Rich Number: 0.27 Bulk Shear: 21.96 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 ------------------------------------------------------------------------------- 500 292 6 207 12| 9.9 0.0 9.9| 29.9 0.0 29.9 59.8 0.97| 9.9 9.6 1000 298 9 227 12| 6.6 0.0 6.6| 49.7 0.0 49.7 49.7 0.79| 9.7 7.6 1500 309 10 234 10| 3.9 0.0 3.9| 50.5 -1.6 48.9 32.6 0.55| 8.9 4.9 2000 319 11 240 8| 2.9 0.5 3.5| 52.4 -1.6 50.8 25.4 0.57| 7.2 4.1 2500 326 12 246 7| 2.3 0.8 3.2| 54.2 -1.6 52.6 21.0 0.58| 6.2 3.6 3000 329 12 254 7| 2.0 1.0 3.0| 55.7 -1.6 54.1 18.0 0.58| 5.5 3.2 4000 332 14 268 7| 1.5 1.1 2.6| 56.4 -1.6 54.8 13.7 0.54| 4.5 2.4 5000 332 15 278 7| 1.2 1.2 2.3| 56.5 -1.8 54.7 10.9 0.50| 3.9 1.9 6000 331 17 284 9| 1.0 1.2 2.1| 56.5 -15.9 40.6 6.8 0.36| 3.7 1.3 Wrote GIF file: /home/apache/climate/data/raob//U4641/skewt/U4641.skewt.20251018.12.gif