UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025042112.upa.cvt Date: 1200Z 21 APR 25 Searching for U4641... Searching the city database file for: U4641 ... Date:1200Z 21 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 -20 SFC 984 111 3.2 1.5 89 1.7 2.4 125 1 277.6 278.4 276.4 289.5 4.33 2 975 186 6.0 3.3 83 2.7 4.7 124 2 281.2 282.0 279.0 294.9 4.97 3 948 415 4.8 -1.2 65 6.0 2.2 119 7 282.2 282.9 277.9 292.6 3.69 4 925 615 3.2 -1.8 70 5.0 1.1 115 11 282.6 283.2 278.0 292.8 3.62 5 850 1294 -1.9 -5.1 79 3.2 -3.1 110 21 284.2 284.7 278.1 292.9 3.07 6 791 1861 -5.9 -8.4 82 2.5 -6.8 121 20 285.8 286.2 278.2 293.2 2.56 7 748 2297 -8.1 -11.1 79 3.0 -9.1 130 20 288.0 288.4 278.9 294.5 2.19 8 700 2808 -12.3 -15.4 78 3.1 -13.2 140 19 288.9 289.2 278.5 293.8 1.65 9 535 4797 -28.1 -30.6 79 2.5 -28.4 128 22 293.1 293.2 279.0 294.9 0.56 10 500 5280 -30.7 -33.6 76 2.9 -31.0 125 23 295.6 295.7 280.0 297.1 0.45 11 472 5689 -33.7 -37.3 70 3.6 -34.0 117 23 296.8 296.9 280.4 297.9 0.33 12 400 6830 -43.7 -47.4 67 3.7 -43.9 95 23 298.2 298.2 280.7 298.7 0.13 13 324 8205 -54.9 -58.3 66 3.4 -54.9 85 23 301.3 301.3 282.0 301.4 0.05 14 314 8406 -52.1 -55.3 68 3.2 -52.2 93 25 307.9 307.9 284.6 308.1 0.07 15 300 8700 -51.5 -54.7 68 3.2 -51.6 105 29 312.8 312.8 286.4 313.0 0.08 16 296 8788 -51.1 -54.4 68 3.3 -51.2 107 29 314.5 314.5 287.0 314.8 0.08 17 250 9900 -47.7 -52.7 56 5.0 -47.9 130 23 335.2 335.2 293.2 335.6 0.12 18 241 10142 -45.7 -51.7 51 6.0 -46.0 134 24 341.7 341.7 294.8 342.2 0.13 19 200 11380 -46.3 -55.3 35 9.0 -46.7 155 27 359.5 359.5 298.7 359.9 0.11 20 170 12454 -48.3 -60.3 24 12.0 -48.8 155 25 373.2 373.3 301.2 373.5 0.07 21 150 13280 -46.9 -60.9 19 14.0 -47.6 155 23 389.2 389.3 303.8 389.6 0.07 22 114 15091 -48.5 -65.5 12 17.0 -49.4 185 16 418.1 418.1 307.5 418.3 0.05 23 102 15828 -45.3 -64.3 10 19.0 -46.6 198 13 437.7 437.7 309.7 438.1 0.07 24 100 15960 -45.9 -63.9 11 18.0 -47.1 200 13 439.0 439.1 309.8 439.4 0.07 25 93 16439 -49.5 -67.5 10 18.0 -50.4 210 11 441.1 441.2 310.0 441.4 0.05 26 70 18300 -49.1 -68.1 9 19.0 -50.4 250 1 479.3 479.4 313.4 479.7 0.06 27 50 20490 -52.1 -71.1 8 19.0 -53.4 190 7 520.7 520.7 316.4 521.0 0.05 28 30 23820 -49.5 -69.5 8 20.0 -52.0 140 5 609.7 609.7 321.1 610.5 0.11 29 29 24041 -49.3 -69.3 8 20.0 -51.9 137 5 616.2 616.2 321.3 617.1 0.12 30 24 25272 -51.5 -70.5 9 19.0 -53.9 118 6 644.1 644.1 322.5 645.0 0.12 31 20 26460 -48.9 -67.9 9 19.0 -52.4 100 7 686.5 686.6 324.0 688.3 0.21 32 17 27522 -51.1 -69.1 10 18.0 -54.3 712.1 712.2 324.8 713.9 0.20 33 10 31009 -46.5 -65.5 10 19.0 -52.7 846.0 846.3 328.4 852.0 0.57 TRP 324 8205 -54.9 -58.3 66 3.4 -54.9 85 23 301.3 301.3 282.0 301.4 0.05 WND Sounding variables and indices 1000-500 mb thick: 5300.00 m Freezing level: 877.94 mb = 1041.04 m = 3415.44 ft Wetbulb zero: 905.90 mb = 782.56 m = 2567.42 ft Precipitable water: 0.45 inches Sfc-500 mean rel hum: 77.68 % Est. max temperature: 10.13 C = 50.24 F Sfc-Lift cond lev (LCL): 958.38 mb = 326.25 m = 1070.37 ft T: 5.27 C 700-500 lapse rate: 7.44 C/km ThetaE index: 2.33 C Layer 948.0- 925.0 mb Conv cond level (CCL): 844.70 mb = 1343.34 m = 4407.22 ft Mean mixing ratio: 3.84 g/kg Conv temperature: 9.84 C = 49.71 F Cap Strength: 1.84 C Lifted Index: 3.29 C Risk: None Lifted Index @300 mb: 14.05 C Lifted Index @700 mb: 1.36 C Showalter Index: 3.32 C Risk: None Total Totals Index: 54.40 C Risk: Scattered heavy thunderstorms Vertical Totals Index: 28.80 C Cross Totals Index: 25.60 C K Index: 20.60 Risk: 20-40 % chance of thunderstorms Sweat Index: 173.00 Risk: None Energy Index: 0.81 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 11.54 J/kg Max Up Vert Vel: 4.80 m/s Conv Inhibition (B-): 71209.45 J/kg Cap Strength: 3.25 C Lift Cond Lev (LCL): 871.31 mb = 1095.15 m = 3592.96 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 155 at 14 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 ---------------------------------------------------------- 0 984 111 125 1 -0.8 0.6 | 337 14 5.3 -12.6 1 925 615 115 11 -10.0 4.6 | 25 9 -3.9 -8.5 2 850 1294 110 21 -19.7 7.2 | 66 15 -13.6 -6.0 3 700 2808 140 19 -12.2 14.6 | 103 6 -6.1 1.4 4 500 5280 125 23 -18.8 13.2 | 90 13 -12.8 0.0 5 400 6830 95 23 -22.9 2.0 | 56 20 -16.8 -11.2 6 324 8205 85 23 -22.9 -2.0 | 48 23 -16.8 -15.2 7 300 8700 105 29 -28.0 7.5 | 76 23 -21.9 -5.7 8 250 9900 130 23 -17.6 14.8 | 98 12 -11.5 1.6 9 200 11380 155 27 -11.4 24.5 | 155 13 -5.3 11.3 10 150 13280 155 23 -9.7 20.8 | 155 9 -3.6 7.7 11 100 15960 200 13 4.4 12.2 | 275 11 10.5 -0.9 12 70 18300 250 1 0.9 0.3 | 331 15 7.0 -12.8 13 50 20490 190 7 1.2 6.9 | 311 10 7.3 -6.3 14 30 23820 140 5 -3.2 3.8 | 343 10 2.9 -9.3 15 20 26460 100 7 -6.9 1.2 | 4 12 -0.8 -11.9 Wind Parameters Mean winds (0-6000m): 125.2 at 19.3 knts Storm direction: 155.2 at 14.5 knts Shear (0-3000m) pos: 1.5 neg: 3.0 tot: 4.5 10-3/s Storm rel Dir Shear (0-3000m): 123.8 deg Storm rel helicity (0-3000m) pos: 64.5 neg: -0.3 tot: 64.1 m^2/s^2 ave: 21.4 10^-3 m/s^2 rel: 0.72 Storm rel vorticity (0-3000m) horiz: 5.4 stream: 3.9 10^-3/s Energy-Hel index: 0.00 Bulk Rich Number: 0.48 Bulk Shear: 24.07 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 ------------------------------------------------------------------------------- 500 116 6 356 11| 0.0 10.2 10.2| 23.1 0.0 23.1 46.2 0.84| 10.3 8.7 1000 114 10 20 10| 0.0 8.9 8.9| 41.0 0.0 41.0 41.0 0.85| 9.0 7.6 1500 113 14 39 10| 1.0 5.9 6.9| 52.1 0.0 52.1 34.7 0.80| 7.7 6.1 2000 115 15 50 10| 1.3 4.5 5.8| 58.3 0.0 58.3 29.1 0.77| 6.7 5.1 2500 119 16 57 10| 1.7 3.6 5.2| 63.0 0.0 63.0 25.2 0.75| 6.0 4.5 3000 123 17 63 9| 1.5 3.0 4.5| 64.5 -0.3 64.1 21.4 0.72| 5.4 3.9 4000 126 18 71 9| 1.1 2.5 3.7| 64.5 -2.0 62.5 15.6 0.64| 4.4 2.8 5000 127 19 77 9| 0.9 2.3 3.2| 64.5 -4.8 59.7 11.9 0.57| 3.8 2.2 6000 125 19 78 10| 0.8 2.1 2.9| 64.5 -25.2 39.3 6.5 0.36| 3.8 1.3 Wrote GIF file: /home/apache/climate/data/raob//U4641/skewt/U4641.skewt.20250421.12.gif