UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025121300.upa.cvt Date: 0000Z 13 DEC 25 Searching for U4641... Searching the city database file for: U4641 ... Date:0000Z 13 DEC 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 1012 113 -47.5 -53.5 50 6.0 -47.6 25 1 224.9 224.9 224.8 225.0 0.03 1 1008 139 -46.7 -54.7 40 8.0 -46.8 30 2 225.9 225.9 225.9 226.0 0.02 2 1007 146 -44.3 -52.3 41 8.0 -44.4 31 2 228.4 228.4 228.3 228.5 0.03 3 1000 193 -41.7 -49.7 42 8.0 -41.8 40 3 231.4 231.5 231.3 231.6 0.04 4 993 241 -39.3 -47.3 42 8.0 -39.5 48 3 234.3 234.3 234.1 234.5 0.05 5 954 519 -33.3 -40.3 49 7.0 -33.6 91 3 243.1 243.1 242.6 243.4 0.12 6 930 698 -32.1 -39.1 50 7.0 -32.4 119 3 246.1 246.1 245.5 246.5 0.14 7 925 736 -30.9 -37.9 50 7.0 -31.3 125 3 247.7 247.7 247.0 248.2 0.16 8 920 774 -30.1 -37.1 50 7.0 -30.5 129 3 248.9 248.9 248.1 249.4 0.17 9 850 1336 -30.9 -35.9 61 5.0 -31.2 180 5 253.8 253.8 252.4 254.4 0.21 10 749 2232 -31.9 -36.4 64 4.5 -32.2 157 5 262.0 262.1 259.2 262.7 0.23 11 700 2707 -34.5 -38.8 65 4.3 -34.7 145 5 264.3 264.3 260.9 264.9 0.19 12 500 4990 -48.5 -52.8 61 4.3 -48.6 125 5 273.9 273.9 267.4 274.1 0.06 13 488 5149 -49.5 -53.7 61 4.2 -49.6 127 5 274.6 274.6 267.8 274.8 0.05 14 404 6367 -54.7 -59.0 59 4.3 -54.8 139 7 283.1 283.1 273.0 283.2 0.03 15 400 6430 -54.9 -59.1 60 4.2 -54.9 140 7 283.6 283.6 273.3 283.8 0.03 16 358 7138 -57.3 -61.6 58 4.3 -57.3 130 11 289.6 289.6 276.5 289.7 0.03 17 329 7674 -58.1 -62.5 57 4.4 -58.2 142 10 295.5 295.5 279.4 295.6 0.03 18 300 8260 -56.1 -60.3 59 4.2 -56.2 155 9 306.3 306.3 284.0 306.4 0.04 19 250 9420 -55.9 -60.2 58 4.3 -56.0 160 5 323.0 323.0 289.7 323.1 0.05 20 231 9922 -54.7 -59.3 57 4.6 -54.8 162 6 332.2 332.2 292.4 332.4 0.06 21 213 10440 -54.7 -59.5 55 4.8 -54.8 164 6 340.0 340.0 294.4 340.2 0.06 22 200 10840 -56.1 -61.1 53 5.0 -56.2 165 7 343.9 343.9 295.3 344.1 0.05 23 150 12670 -56.7 -63.7 41 7.0 -56.9 180 11 372.4 372.4 301.0 372.6 0.05 24 143 12973 -56.1 -63.1 41 7.0 -56.3 181 12 378.6 378.6 302.1 378.8 0.06 25 111 14561 -61.1 -70.1 29 9.0 -61.3 187 17 397.6 397.6 304.9 397.8 0.03 26 100 15210 -59.7 -69.7 26 10.0 -59.9 190 19 412.4 412.4 306.8 412.5 0.03 27 70 17420 -61.3 -72.3 22 11.0 -61.6 185 25 453.2 453.3 311.2 453.4 0.03 28 57 18691 -62.7 -74.7 18 12.0 -63.0 477.5 477.5 313.2 477.7 0.03 TRP 358 7138 -57.3 -61.6 58 4.3 -57.3 130 11 289.6 289.6 276.5 289.7 0.03 WND Sounding variables and indices 1000-500 mb thick: 4797.00 m Freezing level: Surface below freezing Wetbulb zero: Below ground Precipitable water: 0.04 inches Sfc-500 mean rel hum: 60.08 % Est. max temperature: -19.38 C = -2.88 F Sfc-Lift cond lev (LCL): 907.12 mb = 874.52 m = 2869.13 ft T: -30.24 C 700-500 lapse rate: 6.13 C/km ThetaE index: 0.00 C Layer 1012.0-166057796923399653706080487429850005504.0 mb Conv cond level (CCL): 1008.00 mb = 139.36 m = 457.23 ft Mean mixing ratio: 0.10 g/kg Conv temperature: -40.95 C = -41.71 F Cap Strength: 21.44 C Lifted Index: 27.30 C Risk: None Lifted Index @300 mb: 46.51 C Lifted Index @700 mb: 21.44 C Showalter Index: 16.05 C Risk: None Total Totals Index: 30.20 C Risk: None Vertical Totals Index: 17.60 C Cross Totals Index: 12.60 C K Index: -22.60 Risk: None Sweat Index: 15.00 Risk: None Energy Index: 4.21 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 75.84 J/kg Max Up Vert Vel: 12.32 m/s Conv Inhibition (B-): 40695.14 J/kg Cap Strength: 27.19 C Lift Cond Lev (LCL): 863.66 mb = 1222.87 m = 4012.01 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 170 at 4 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 1012 113 25 1 -0.4 -0.9 | 357 4 0.2 -4.5 1 1000 193 40 3 -1.9 -2.3 | 12 6 -1.3 -5.9 2 925 736 125 3 -2.5 1.7 | 45 3 -1.8 -1.9 3 850 1336 180 5 0.0 5.0 | 204 2 0.6 1.4 4 700 2707 145 5 -2.9 4.1 | 103 2 -2.2 0.5 5 500 4990 125 5 -4.1 2.9 | 79 4 -3.5 -0.7 6 400 6430 140 7 -4.5 5.4 | 115 4 -3.9 1.8 7 358 7138 130 11 -8.4 7.1 | 114 9 -7.8 3.5 8 300 8260 155 9 -3.8 8.2 | 145 6 -3.2 4.6 9 250 9420 160 5 -1.7 4.7 | 136 2 -1.1 1.1 10 200 10840 165 7 -1.8 6.8 | 160 3 -1.2 3.2 11 150 12670 180 11 0.0 11.0 | 185 7 0.6 7.4 12 100 15210 190 19 3.3 18.7 | 195 16 3.9 15.1 13 70 17420 185 25 2.2 24.9 | 187 22 2.8 21.3 Wind Parameters Mean winds (0-6000m): 140.0 at 4.8 knts Storm direction: 170.0 at 3.6 knts Shear (0-3000m) pos: 1.0 neg: 0.5 tot: 1.5 10-3/s Storm rel Dir Shear (0-3000m): 100.3 deg Storm rel helicity (0-3000m) pos: 6.3 neg: -1.3 tot: 5.0 m^2/s^2 ave: 1.7 10^-3 m/s^2 rel: 0.33 Storm rel vorticity (0-3000m) horiz: 2.4 stream: 0.8 10^-3/s Energy-Hel index: 0.00 Bulk Rich Number: 25.03 Bulk Shear: 3.03 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 68 3 23 5| 3.1 0.0 3.1| 4.9 0.0 4.9 9.7 0.69| 5.5 3.8 1000 111 3 43 3| 2.6 0.0 2.6| 5.9 0.0 5.9 5.9 0.66| 4.6 3.0 1500 145 4 70 2| 2.0 0.0 2.0| 6.3 -0.2 6.1 4.1 0.63| 3.8 2.4 2000 153 4 91 1| 1.5 0.3 1.8| 6.3 -0.6 5.7 2.9 0.48| 3.1 1.5 2500 154 4 99 1| 1.2 0.5 1.7| 6.3 -1.0 5.3 2.1 0.37| 2.7 1.0 3000 152 4 100 1| 1.0 0.5 1.5| 6.3 -1.3 5.0 1.7 0.33| 2.4 0.8 4000 147 5 97 2| 0.8 0.4 1.2| 6.3 -1.7 4.6 1.2 0.28| 1.9 0.5 5000 142 5 92 2| 0.6 0.4 1.0| 6.5 -2.0 4.4 0.9 0.24| 1.6 0.4 6000 140 5 93 2| 0.7 0.3 1.0| 8.2 -2.0 6.1 1.0 0.32| 1.5 0.5 Wrote GIF file: /home/apache/climate/data/raob//U4641/skewt/U4641.skewt.20251213.00.gif