UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025100912.upa.cvt Date: 1200Z 9 OCT 25 Searching for U4641... Searching the city database file for: U4641 ... Date:1200Z 9 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 1018 108 -6.7 -9.8 79 3.1 -7.5 355 3 265.1 265.4 264.6 269.9 1.78 1 1000 247 -8.5 -12.4 73 3.9 -9.5 355 7 264.6 264.9 263.7 268.7 1.47 2 973 458 -10.9 -13.8 79 2.9 -11.6 353 8 264.3 264.5 263.2 268.0 1.35 3 925 845 -12.9 -14.6 87 1.7 -13.3 350 9 266.1 266.3 264.5 269.8 1.33 4 918 903 -13.3 -15.1 86 1.8 -13.7 351 9 266.3 266.5 264.5 269.8 1.29 5 907 994 -14.5 -16.7 83 2.2 -15.0 353 9 266.0 266.2 264.0 269.1 1.14 6 900 1053 -13.1 -15.3 84 2.2 -13.6 355 9 268.0 268.2 265.7 271.6 1.29 7 850 1487 -15.5 -19.7 70 4.2 -16.3 5 9 269.9 270.1 266.4 272.6 0.94 8 810 1849 -17.9 -22.6 67 4.7 -18.7 16 9 271.1 271.2 266.9 273.3 0.77 9 719 2737 -19.7 -30.7 37 11.0 -21.2 44 11 278.5 278.6 271.0 279.8 0.41 10 700 2936 -20.7 -32.7 33 12.0 -22.2 50 11 279.6 279.6 271.5 280.7 0.35 11 653 3447 -23.1 -37.1 27 14.0 -24.5 55 16 282.5 282.5 273.0 283.2 0.24 12 532 4930 -29.3 -34.3 62 5.0 -29.8 70 29 292.1 292.2 278.3 293.4 0.39 13 500 5370 -32.5 -37.4 62 4.9 -32.9 75 33 293.4 293.5 278.8 294.4 0.31 14 447 6152 -38.1 -42.4 64 4.3 -38.4 75 40 295.9 296.0 279.8 296.6 0.20 15 400 6910 -42.9 -47.4 61 4.5 -43.1 75 46 299.2 299.3 281.2 299.7 0.13 16 349 7815 -49.7 -54.1 60 4.4 -49.8 73 46 301.9 302.0 282.3 302.2 0.07 17 309 8601 -54.7 -59.1 58 4.4 -54.8 71 46 305.6 305.7 283.7 305.8 0.04 18 300 8790 -55.5 -59.8 59 4.3 -55.6 70 46 307.1 307.1 284.3 307.3 0.04 19 266 9551 -58.9 -63.4 56 4.5 -59.0 70 48 312.9 312.9 286.4 313.0 0.03 20 250 9940 -59.5 -63.9 56 4.4 -59.6 70 48 317.6 317.6 288.0 317.7 0.03 21 238 10247 -59.1 -63.6 56 4.5 -59.2 70 45 322.7 322.7 289.6 322.8 0.03 22 222 10685 -55.5 -59.8 59 4.3 -55.6 70 41 334.7 334.7 293.0 335.0 0.05 23 200 11350 -54.1 -58.7 57 4.6 -54.2 70 35 347.1 347.1 296.1 347.4 0.07 24 168 12470 -52.3 -57.3 55 5.0 -52.5 61 25 367.8 367.9 300.2 368.3 0.10 25 150 13200 -52.9 -58.9 48 6.0 -53.1 55 19 378.9 378.9 302.1 379.3 0.09 26 100 15820 -53.7 -62.7 32 9.0 -54.1 30 9 424.0 424.0 308.2 424.4 0.08 27 70 18110 -54.1 -64.1 28 10.0 -54.7 80 1 468.6 468.7 312.5 469.2 0.10 28 50 20260 -54.7 -66.7 21 12.0 -55.5 155 3 514.6 514.6 316.0 515.2 0.10 29 47 20655 -55.1 -67.1 21 12.0 -55.9 162 5 522.8 522.8 316.5 523.4 0.10 30 30 23550 -50.7 -63.7 20 13.0 -52.6 215 17 606.4 606.5 321.0 608.3 0.24 31 28 23998 -51.1 -64.1 20 13.0 -53.1 215 20 617.4 617.5 321.5 619.3 0.25 32 20 26220 -43.5 -58.5 18 15.0 -48.1 215 35 703.0 703.3 324.7 709.2 0.71 33 11 30216 -46.9 -62.9 14 16.0 -52.3 193 33 821.8 822.1 328.0 829.3 0.74 34 10 30850 -45.5 -61.5 15 16.0 -51.6 190 33 849.7 850.2 328.6 860.0 0.97 35 9.5 31193 -43.9 -59.9 15 16.0 -50.7 868.3 869.0 329.1 881.9 1.26 TRP 266 9551 -58.9 -63.4 56 4.5 -59.0 70 48 312.9 312.9 286.4 313.0 0.03 WND Sounding variables and indices 1000-500 mb thick: 5123.00 m Freezing level: Surface below freezing Wetbulb zero: Below ground Precipitable water: 0.18 inches Sfc-500 mean rel hum: 55.92 % Est. max temperature: -2.56 C = 27.39 F Sfc-Lift cond lev (LCL): 968.99 mb = 489.69 m = 1606.56 ft T: -11.06 C 700-500 lapse rate: 4.85 C/km ThetaE index: 1.91 C Layer 1000.0- 925.0 mb Conv cond level (CCL): 910.35 mb = 966.47 m = 3170.78 ft Mean mixing ratio: 1.41 g/kg Conv temperature: -5.72 C = 21.70 F Cap Strength: 19.61 C Lifted Index: 20.27 C Risk: None Lifted Index @300 mb: 27.10 C Lifted Index @700 mb: 10.69 C Showalter Index: 17.28 C Risk: None Total Totals Index: 29.80 C Risk: None Vertical Totals Index: 17.00 C Cross Totals Index: 12.80 C K Index: -14.70 Risk: None Sweat Index: 51.00 Risk: None Energy Index: 4.60 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 5.15 J/kg Max Up Vert Vel: 3.21 m/s Conv Inhibition (B-): 70666.64 J/kg Cap Strength: 20.15 C Lift Cond Lev (LCL): 925.11 mb = 844.12 m = 2769.39 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 89 at 13 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 1018 108 355 3 0.3 -3.0 | 282 14 13.6 -2.8 1 1000 247 355 7 0.6 -7.0 | 296 16 14.0 -6.8 2 925 845 350 9 1.6 -8.9 | 300 17 14.9 -8.7 3 850 1487 5 9 -0.8 -9.0 | 305 15 12.6 -8.8 4 700 2936 50 11 -8.4 -7.1 | 324 8 4.9 -6.9 5 500 5370 75 33 -31.9 -8.5 | 66 20 -18.5 -8.4 6 400 6910 75 46 -44.4 -11.9 | 69 33 -31.1 -11.7 7 300 8790 70 46 -43.2 -15.7 | 62 34 -29.9 -15.6 8 266 9551 70 48 -45.1 -16.4 | 63 36 -31.7 -16.2 9 250 9940 70 48 -45.1 -16.4 | 63 36 -31.7 -16.2 10 200 11350 70 35 -32.9 -12.0 | 59 23 -19.5 -11.8 11 150 13200 55 19 -15.6 -10.9 | 12 11 -2.2 -10.7 12 100 15820 30 9 -4.5 -7.8 | 311 12 8.9 -7.6 13 70 18110 80 1 -1.0 -0.2 | 270 12 12.4 0.0 14 50 20260 155 3 -1.3 2.7 | 257 12 12.1 2.9 15 30 23550 215 17 9.8 13.9 | 239 27 23.1 14.1 16 20 26220 215 35 20.1 28.7 | 229 44 33.4 28.8 17 10 30850 190 33 5.7 32.5 | 210 38 19.1 32.7 Wind Parameters Mean winds (0-6000m): 59.2 at 17.8 knts Storm direction: 89.2 at 13.4 knts Shear (0-3000m) pos: 1.9 neg: 0.9 tot: 2.8 10-3/s Storm rel Dir Shear (0-3000m): 53.6 deg Storm rel helicity (0-3000m) pos: 42.6 neg: 0.0 tot: 42.6 m^2/s^2 ave: 14.2 10^-3 m/s^2 rel: 0.67 Storm rel vorticity (0-3000m) horiz: 3.1 stream: 2.1 10^-3/s Energy-Hel index: 0.00 Bulk Rich Number: 0.15 Bulk Shear: 34.81 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 ------------------------------------------------------------------------------- 500 354 7 295 16| 0.0 5.4 5.4| 17.4 0.0 17.4 34.8 0.84| 5.4 4.6 1000 353 8 298 16| 0.5 2.7 3.2| 22.0 0.0 22.0 22.0 0.79| 3.6 2.8 1500 356 8 300 16| 0.9 1.8 2.7| 27.0 0.0 27.0 18.0 0.74| 3.1 2.3 2000 2 9 303 16| 1.4 1.3 2.7| 33.1 0.0 33.1 16.5 0.72| 3.0 2.1 2500 9 9 306 15| 1.6 1.1 2.7| 37.3 0.0 37.3 14.9 0.67| 3.0 2.0 3000 17 9 309 14| 1.9 0.9 2.8| 42.6 0.0 42.6 14.2 0.67| 3.1 2.1 4000 33 11 322 12| 2.6 0.7 3.3| 64.6 0.0 64.6 16.1 0.76| 3.5 2.7 5000 49 14 344 9| 3.1 0.5 3.7| 93.9 0.0 93.9 18.8 0.75| 3.9 2.9 6000 59 18 12 9| 3.0 0.6 3.6|109.1 0.0 109.1 18.2 0.67| 4.0 2.7 Wrote GIF file: /home/apache/climate/data/raob//U4641/skewt/U4641.skewt.20251009.12.gif