UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025042712.upa.cvt Date: 1200Z 27 APR 25 Searching for U4641... Searching the city database file for: U4641 ... Date:1200Z 27 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 93 25 1 SFC 998 109 0.2 -1.1 91 1.3 -0.3 25 1 273.5 274.1 272.9 283.1 3.53 2 925 711 -2.9 -4.7 87 1.8 -3.6 120 17 276.3 276.8 273.7 284.4 2.91 3 850 1380 -6.3 -8.5 84 2.2 -7.0 150 17 279.5 279.9 274.7 286.3 2.36 4 732 2535 -12.9 -14.5 88 1.6 -13.3 158 17 284.5 284.8 276.4 289.5 1.70 5 700 2874 -15.3 -17.3 85 2.0 -15.8 160 17 285.5 285.8 276.5 289.7 1.40 6 559 4533 -27.9 -30.1 81 2.2 -28.2 170 22 289.6 289.7 277.4 291.4 0.56 7 524 4997 -29.5 -31.8 80 2.3 -29.8 173 24 293.1 293.2 279.0 294.8 0.51 8 512 5162 -30.9 -33.0 82 2.1 -31.2 174 24 293.4 293.5 279.0 294.9 0.46 9 500 5330 -32.3 -34.6 80 2.3 -32.5 175 25 293.7 293.7 279.1 295.0 0.41 10 400 6860 -42.9 -47.9 58 5.0 -43.1 170 27 299.2 299.3 281.2 299.7 0.13 11 324 8254 -53.3 -57.7 59 4.4 -53.4 174 30 303.5 303.5 282.8 303.6 0.05 12 309 8560 -54.3 -58.6 59 4.3 -54.4 175 31 306.2 306.2 284.0 306.4 0.05 13 304 8665 -54.3 -58.6 59 4.3 -54.4 175 31 307.6 307.7 284.5 307.8 0.05 14 300 8750 -53.7 -58.0 59 4.3 -53.8 175 31 309.7 309.7 285.2 309.8 0.05 15 294 8879 -52.3 -56.6 60 4.3 -52.4 176 30 313.4 313.4 286.6 313.7 0.06 16 250 9930 -48.9 -53.9 56 5.0 -49.1 185 19 333.4 333.4 292.7 333.8 0.10 17 215 10923 -47.1 -55.1 40 8.0 -47.5 212 12 350.9 350.9 296.9 351.3 0.10 18 200 11400 -48.1 -58.1 31 10.0 -48.5 225 9 356.6 356.6 298.1 356.9 0.07 19 179 12130 -49.5 -61.5 23 12.0 -50.0 240 7 365.8 365.8 299.8 366.1 0.05 20 150 13290 -49.5 -65.5 14 16.0 -50.1 265 5 384.8 384.8 303.1 385.0 0.04 21 100 15950 -48.7 -69.7 7 21.0 -49.7 290 1 433.6 433.6 309.3 433.8 0.03 22 70 18280 -51.9 -74.9 5 23.0 -52.9 5 7 473.4 473.4 312.9 473.5 0.02 23 67 18565 -51.9 -74.9 5 23.0 -52.9 10 6 479.3 479.3 313.4 479.5 0.02 24 50 20470 -51.1 -75.1 4 24.0 -52.6 40 3 523.1 523.1 316.5 523.2 0.03 25 42 21606 -49.7 -73.7 4 24.0 -51.7 40 4 553.3 553.3 318.3 553.6 0.04 26 30 23800 -50.9 -74.9 4 24.0 -53.2 40 7 605.9 605.9 320.9 606.2 0.05 27 21 26121 -51.1 -75.1 4 24.0 -54.1 44 9 670.3 670.4 323.4 670.9 0.07 28 20 26440 -48.3 -73.3 4 25.0 -52.2 45 9 688.3 688.4 324.1 689.1 0.09 29 13 29285 -47.1 -72.1 4 25.0 -52.7 782.7 782.8 326.8 784.4 0.17 TRP 309 8560 -54.3 -58.6 59 4.3 -54.4 175 31 306.2 306.2 284.0 306.4 0.05 WND Sounding variables and indices 1000-500 mb thick: 5237.00 m Freezing level: 993.29 mb = 147.80 m = 484.89 ft Wetbulb zero: Below ground Precipitable water: 0.38 inches Sfc-500 mean rel hum: 84.56 % Est. max temperature: 6.32 C = 43.37 F Sfc-Lift cond lev (LCL): 977.84 mb = 270.72 m = 888.17 ft T: -0.63 C 700-500 lapse rate: 6.92 C/km ThetaE index: 0.00 C Layer 998.0- -0.0 mb Conv cond level (CCL): 892.48 mb = 994.16 m = 3261.63 ft Mean mixing ratio: 3.11 g/kg Conv temperature: 4.39 C = 39.91 F Cap Strength: 8.40 C Lifted Index: 8.46 C Risk: None Lifted Index @300 mb: 18.17 C Lifted Index @700 mb: 4.43 C Showalter Index: 6.76 C Risk: None Total Totals Index: 49.80 C Risk: Scattered heavy thunderstorms Vertical Totals Index: 26.00 C Cross Totals Index: 23.80 C K Index: 15.50 Risk: < 20 % chance of thunderstorms Sweat Index: 75.00 Risk: None Energy Index: 1.80 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 12.26 J/kg Max Up Vert Vel: 4.95 m/s Conv Inhibition (B-): 70288.05 J/kg Cap Strength: 8.45 C Lift Cond Lev (LCL): 923.18 mb = 726.60 m = 2383.82 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 192 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 ---------------------------------------------------------- 0 998 109 25 1 -0.4 -0.9 | 13 15 -3.3 -14.9 1 925 711 120 17 -14.7 8.5 | 73 18 -17.6 -5.5 2 850 1380 150 17 -8.5 14.7 | 94 11 -11.4 0.7 3 700 2874 160 17 -5.8 16.0 | 103 9 -8.7 2.0 4 500 5330 175 25 -2.2 24.9 | 155 12 -5.1 10.9 5 400 6860 170 27 -4.7 26.6 | 149 15 -7.6 12.6 6 309 8560 175 31 -2.7 30.9 | 162 18 -5.6 16.9 7 300 8750 175 31 -2.7 30.9 | 162 18 -5.6 16.9 8 250 9930 185 19 1.7 18.9 | 166 5 -1.2 4.9 9 200 11400 225 9 6.4 6.4 | 336 8 3.5 -7.6 10 150 13290 265 5 5.0 0.4 | 351 14 2.1 -13.6 11 100 15950 290 1 0.9 -0.3 | 8 14 -2.0 -14.3 12 70 18280 5 7 -0.6 -7.0 | 9 21 -3.5 -21.0 13 50 20470 40 3 -1.9 -2.3 | 16 17 -4.8 -16.3 14 30 23800 40 7 -4.5 -5.4 | 21 21 -7.4 -19.4 15 20 26440 45 9 -6.4 -6.4 | 24 22 -9.3 -20.4 Wind Parameters Mean winds (0-6000m): 161.7 at 19.1 knts Storm direction: 191.7 at 14.3 knts Shear (0-3000m) pos: 3.2 neg: 0.0 tot: 3.2 10-3/s Storm rel Dir Shear (0-3000m): 95.8 deg Storm rel helicity (0-3000m) pos: 131.6 neg: 0.0 tot: 131.6 m^2/s^2 ave: 43.9 10^-3 m/s^2 rel: 0.80 Storm rel vorticity (0-3000m) horiz: 6.0 stream: 4.8 10^-3/s Energy-Hel index: 0.01 Bulk Rich Number: 0.44 Bulk Shear: 27.79 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 ------------------------------------------------------------------------------- 500 118 8 43 14| 14.5 0.0 14.5| 78.6 0.0 78.6 157.3 0.88| 17.9 15.8 1000 124 12 61 15| 9.0 0.0 9.0|118.1 0.0 118.1 118.1 0.85| 14.3 12.2 1500 133 14 70 14| 6.0 0.0 6.0|125.9 0.0 125.9 84.0 0.82| 10.9 8.9 2000 139 15 77 13| 4.5 0.0 4.5|127.5 0.0 127.5 63.7 0.81| 8.4 6.8 2500 143 15 81 12| 3.6 0.0 3.6|128.9 0.0 128.9 51.5 0.80| 7.0 5.6 3000 147 15 84 11| 3.2 0.0 3.2|131.6 0.0 131.6 43.9 0.80| 6.0 4.8 4000 152 16 93 11| 2.8 0.0 2.8|140.9 0.0 140.9 35.2 0.82| 5.0 4.1 5000 158 18 104 10| 2.6 0.0 2.6|151.3 0.0 151.3 30.3 0.83| 4.4 3.7 6000 162 19 115 10| 2.2 0.1 2.3|153.6 -2.2 151.4 25.2 0.79| 3.9 3.1 Wrote GIF file: /home/apache/climate/data/raob//U4641/skewt/U4641.skewt.20250427.12.gif