UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025042812.upa.cvt Date: 1200Z 28 APR 25 Searching for U4641... Searching the city database file for: U4641 ... Date:1200Z 28 APR 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 ------------------------------------------------------------------------------- 0 1000 38 355 1 SFC 991 111 1.2 0.4 94 0.8 0.8 355 1 275.1 275.7 274.5 285.9 3.97 2 925 662 -1.9 -3.7 87 1.8 -2.6 15 29 277.4 277.9 274.6 286.1 3.14 3 850 1332 -4.5 -5.8 91 1.3 -5.0 45 29 281.4 281.9 276.5 289.7 2.91 4 844 1388 -4.5 -5.8 91 1.3 -5.0 45 29 282.0 282.5 276.8 290.3 2.93 5 700 2833 -14.5 -16.6 84 2.1 -15.0 35 17 286.4 286.7 277.1 290.9 1.49 6 658 3300 -16.9 -19.0 84 2.1 -17.4 42 18 288.8 289.1 278.0 292.8 1.29 7 500 5300 -32.3 -34.5 81 2.2 -32.5 75 21 293.7 293.7 279.1 295.0 0.41 8 400 6830 -44.5 -47.6 71 3.1 -44.6 90 21 297.2 297.2 280.3 297.6 0.13 9 367 7401 -49.1 -52.2 70 3.1 -49.2 94 23 298.4 298.5 280.8 298.7 0.08 10 326 8173 -52.7 -55.6 71 2.9 -52.8 100 25 303.8 303.8 283.0 304.0 0.06 11 317 8354 -53.1 -56.1 70 3.0 -53.2 97 23 305.6 305.7 283.7 305.9 0.06 12 300 8710 -52.3 -55.3 70 3.0 -52.4 90 19 311.6 311.6 286.0 311.9 0.07 13 289 8952 -51.9 -55.0 69 3.1 -52.0 88 17 315.5 315.6 287.3 315.8 0.08 14 250 9900 -47.9 -52.4 60 4.5 -48.1 80 7 334.9 334.9 293.2 335.3 0.12 15 220 10742 -47.5 -53.5 50 6.0 -47.8 46 6 347.9 348.0 296.3 348.4 0.12 16 200 11370 -48.3 -55.3 44 7.0 -48.6 20 5 356.3 356.3 298.1 356.7 0.11 17 150 13260 -49.5 -60.5 26 11.0 -50.0 10 7 384.8 384.8 303.1 385.1 0.07 18 145 13482 -49.3 -61.3 23 12.0 -49.8 12 7 388.9 388.9 303.7 389.2 0.07 19 100 15920 -49.3 -64.3 16 15.0 -50.1 30 7 432.5 432.5 309.1 432.8 0.07 20 70 18250 -50.5 -67.5 12 17.0 -51.6 25 5 476.3 476.4 313.2 476.7 0.06 21 50 20450 -50.5 -68.5 10 18.0 -52.0 25 9 524.5 524.5 316.6 525.0 0.08 22 35 22762 -52.3 -69.3 11 17.0 -53.9 8 8 576.1 576.1 319.5 576.8 0.10 23 30 23760 -51.1 -69.1 10 18.0 -53.2 360 7 605.3 605.4 320.9 606.2 0.12 24 20 26400 -48.5 -65.5 12 17.0 -52.0 35 11 687.7 687.8 324.1 690.2 0.29 25 14 28758 -46.3 -64.3 11 18.0 -51.4 769.0 769.3 326.5 773.7 0.48 TRP 326 8173 -52.7 -55.6 71 2.9 -52.8 100 25 303.8 303.8 283.0 304.0 0.06 WND Sounding variables and indices 1000-500 mb thick: 5262.00 m Freezing level: 965.45 mb = 324.12 m = 1063.38 ft Wetbulb zero: 974.82 mb = 242.36 m = 795.14 ft Precipitable water: 0.42 inches Sfc-500 mean rel hum: 85.56 % Est. max temperature: 8.21 C = 46.78 F Sfc-Lift cond lev (LCL): 978.73 mb = 210.39 m = 690.25 ft T: 0.64 C 700-500 lapse rate: 7.22 C/km ThetaE index: 0.00 C Layer 991.0--2648116578746368.0 mb Conv cond level (CCL): 883.69 mb = 1024.00 m = 3359.54 ft Mean mixing ratio: 3.39 g/kg Conv temperature: 5.69 C = 42.24 F Cap Strength: 4.94 C Lifted Index: 6.76 C Risk: None Lifted Index @300 mb: 17.99 C Lifted Index @700 mb: 3.64 C Showalter Index: 4.15 C Risk: None Total Totals Index: 54.30 C Risk: Scattered heavy thunderstorms Vertical Totals Index: 27.80 C Cross Totals Index: 26.50 C K Index: 19.90 Risk: < 20 % chance of thunderstorms Sweat Index: 185.00 Risk: None Energy Index: 1.08 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 14.35 J/kg Max Up Vert Vel: 5.36 m/s Conv Inhibition (B-): 59045.15 J/kg Cap Strength: 6.59 C Lift Cond Lev (LCL): 919.55 mb = 708.81 m = 2325.46 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 79 at 16 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 ---------------------------------------------------------- 0 991 111 355 1 0.1 -1.0 | 263 16 15.5 1.9 1 925 662 15 29 -7.5 -28.0 | 342 26 7.9 -25.1 2 850 1332 45 29 -20.5 -20.5 | 16 18 -5.1 -17.6 3 700 2833 35 17 -9.8 -13.9 | 333 12 5.7 -11.0 4 500 5300 75 21 -20.3 -5.4 | 63 5 -4.8 -2.5 5 400 6830 90 21 -21.0 0.0 | 118 6 -5.5 2.9 6 326 8173 100 25 -24.6 4.3 | 128 12 -9.2 7.3 7 300 8710 90 19 -19.0 0.0 | 130 5 -3.5 2.9 8 250 9900 80 7 -6.9 -1.2 | 259 9 8.6 1.7 9 200 11370 20 5 -1.7 -4.7 | 277 14 13.7 -1.8 10 150 13260 10 7 -1.2 -6.9 | 286 15 14.2 -4.0 11 100 15920 30 7 -3.5 -6.1 | 285 12 12.0 -3.1 12 70 18250 25 5 -2.1 -4.5 | 277 13 13.3 -1.6 13 50 20450 25 9 -3.8 -8.2 | 294 13 11.7 -5.2 14 30 23760 360 7 -0.0 -7.0 | 285 16 15.5 -4.1 15 20 26400 35 11 -6.3 -9.0 | 304 11 9.1 -6.1 Wind Parameters Mean winds (0-6000m): 49.3 at 21.0 knts Storm direction: 79.3 at 15.7 knts Shear (0-3000m) pos: 4.3 neg: 1.4 tot: 5.7 10-3/s Storm rel Dir Shear (0-3000m): 74.6 deg Storm rel helicity (0-3000m) pos: 206.2 neg: -41.0 tot: 165.2 m^2/s^2 ave: 55.1 10^-3 m/s^2 rel: 0.51 Storm rel vorticity (0-3000m) horiz: 9.7 stream: 4.9 10^-3/s Energy-Hel index: 0.02 Bulk Rich Number: 0.69 Bulk Shear: 20.71 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 14 14 310 16| 26.2 0.0 26.2|115.8 0.0 115.8 231.6 0.92| 26.7 24.5 1000 21 21 335 19| 14.5 0.0 14.5|183.2 0.0 183.2 183.2 0.90| 19.7 17.8 1500 29 24 348 18| 9.0 0.0 9.0|203.5 -7.0 196.5 131.0 0.82| 15.5 12.7 2000 33 24 352 17| 6.7 1.1 7.8|203.5 -21.9 181.6 90.8 0.67| 12.7 8.6 2500 34 23 352 17| 5.4 1.7 7.1|203.5 -35.7 167.8 67.1 0.55| 11.0 6.1 3000 35 22 350 16| 4.3 1.4 5.7|206.2 -41.0 165.2 55.1 0.51| 9.7 4.9 4000 37 21 350 14| 3.5 1.1 4.6|216.4 -41.0 175.4 43.9 0.53| 8.0 4.2 5000 43 21 355 12| 2.9 0.9 3.8|225.3 -41.0 184.3 36.9 0.56| 7.0 3.9 6000 49 21 2 11| 2.5 0.7 3.2|231.0 -41.0 190.0 31.7 0.59| 6.2 3.6 Wrote GIF file: /home/apache/climate/data/raob//U4641/skewt/U4641.skewt.20250428.12.gif