UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025121212.upa.cvt Date: 1200Z 12 DEC 25 Searching for U4641... Searching the city database file for: U4641 ... Date:1200Z 12 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 1010 112 -43.9 -48.8 58 4.9 -44.0 360 1 228.6 228.6 228.5 228.7 0.04 1 1000 179 -42.3 -49.3 46 7.0 -42.4 10 1 230.9 230.9 230.7 231.0 0.04 2 990 247 -41.3 -48.3 47 7.0 -41.4 358 1 232.5 232.5 232.4 232.7 0.05 3 985 282 -37.5 -44.5 48 7.0 -37.7 353 1 236.7 236.7 236.4 236.9 0.07 4 932 666 -33.5 -39.5 55 6.0 -33.8 289 1 244.5 244.5 244.0 244.9 0.13 5 925 719 -33.5 -39.5 55 6.0 -33.8 280 1 245.1 245.1 244.5 245.4 0.13 6 854 1281 -32.7 -37.7 61 5.0 -33.0 214 5 251.6 251.6 250.4 252.0 0.17 7 850 1314 -32.3 -37.3 61 5.0 -32.6 210 5 252.3 252.3 251.1 252.8 0.18 8 815 1612 -30.1 -34.9 63 4.8 -30.4 216 6 257.7 257.7 255.8 258.4 0.24 9 735 2344 -31.9 -36.4 64 4.5 -32.2 232 9 263.5 263.5 260.3 264.1 0.23 10 700 2687 -34.3 -38.8 64 4.5 -34.6 240 11 264.5 264.5 261.0 265.1 0.19 11 543 4415 -45.7 -49.7 64 4.0 -45.8 232 11 270.9 270.9 265.4 271.1 0.08 12 532 4551 -46.5 -50.6 63 4.1 -46.6 232 11 271.5 271.5 265.8 271.7 0.07 13 500 4960 -48.5 -53.0 59 4.5 -48.6 230 11 273.9 273.9 267.4 274.1 0.06 14 400 6410 -55.1 -60.0 54 4.9 -55.2 210 9 283.4 283.4 273.2 283.5 0.03 15 358 7117 -57.5 -63.5 46 6.0 -57.6 215 9 289.3 289.3 276.3 289.4 0.02 16 300 8240 -56.1 -62.1 47 6.0 -56.2 205 5 306.3 306.3 284.0 306.4 0.03 17 257 9224 -55.9 -62.9 41 7.0 -56.0 239 5 320.4 320.4 288.9 320.5 0.03 18 250 9400 -54.7 -61.7 42 7.0 -54.8 245 5 324.7 324.8 290.2 324.9 0.04 19 240 9662 -53.7 -60.7 42 7.0 -53.9 249 4 330.1 330.1 291.8 330.2 0.04 20 218 10274 -57.1 -65.1 36 8.0 -57.2 257 3 334.0 334.0 292.8 334.1 0.03 21 200 10820 -56.3 -64.3 36 8.0 -56.5 265 1 343.6 343.6 295.2 343.8 0.03 22 150 12640 -57.9 -67.9 27 10.0 -58.1 200 7 370.3 370.3 300.7 370.4 0.03 23 105 14875 -60.5 -72.5 19 12.0 -60.7 204 16 405.1 405.1 305.9 405.2 0.02 24 100 15180 -59.7 -72.7 17 13.0 -60.0 205 17 412.4 412.4 306.8 412.5 0.02 25 98 15306 -58.5 -71.5 17 13.0 -58.8 204 18 417.1 417.1 307.4 417.2 0.03 26 77 16797 -63.7 -76.7 15 13.0 -63.9 194 24 436.1 436.1 309.5 436.1 0.01 27 70 17380 -63.7 -77.7 13 14.0 -63.9 190 27 448.1 448.1 310.7 448.2 0.01 28 50 19440 -64.5 -78.5 13 14.0 -64.8 491.5 491.5 314.4 491.6 0.02 TRP 358 7117 -57.5 -63.5 46 6.0 -57.6 215 9 289.3 289.3 276.3 289.4 0.02 WND Sounding variables and indices 1000-500 mb thick: 4781.00 m Freezing level: Surface below freezing Wetbulb zero: Below ground Precipitable water: 0.04 inches Sfc-500 mean rel hum: 61.12 % Est. max temperature: -21.46 C = -6.63 F Sfc-Lift cond lev (LCL): 925.23 mb = 717.27 m = 2353.22 ft T: -33.50 C 700-500 lapse rate: 6.25 C/km ThetaE index: 0.00 C Layer 1010.0- 0.0 mb Conv cond level (CCL): 1000.00 mb = 179.00 m = 587.26 ft Mean mixing ratio: 0.10 g/kg Conv temperature: -41.10 C = -41.98 F Cap Strength: 26.49 C Lifted Index: 28.00 C Risk: None Lifted Index @300 mb: 47.12 C Lifted Index @700 mb: 22.40 C Showalter Index: 17.34 C Risk: None Total Totals Index: 27.40 C Risk: None Vertical Totals Index: 16.20 C Cross Totals Index: 11.20 C K Index: -25.60 Risk: None Sweat Index: 21.00 Risk: None Energy Index: 4.54 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 57.66 J/kg Max Up Vert Vel: 10.74 m/s Conv Inhibition (B-): 42404.20 J/kg Cap Strength: 27.58 C Lift Cond Lev (LCL): 868.92 mb = 1158.99 m = 3802.43 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 261 at 6 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 1010 112 360 1 -0.0 -1.0 | 72 7 -6.2 -2.0 1 1000 179 10 1 -0.2 -1.0 | 73 7 -6.4 -2.0 2 925 719 280 1 1.0 -0.2 | 78 5 -5.2 -1.1 3 850 1314 210 5 2.5 4.3 | 132 5 -3.7 3.4 4 700 2687 240 11 9.5 5.5 | 216 6 3.3 4.5 5 500 4960 230 11 8.4 7.1 | 200 6 2.2 6.1 6 400 6410 210 9 4.5 7.8 | 166 7 -1.7 6.8 7 358 7117 215 9 5.2 7.4 | 171 6 -1.1 6.4 8 300 8240 205 5 2.1 4.5 | 131 5 -4.1 3.6 9 250 9400 245 5 4.5 2.1 | 124 2 -1.7 1.1 10 200 10820 265 1 1.0 0.1 | 80 5 -5.2 -0.9 11 150 12640 200 7 2.4 6.6 | 146 7 -3.8 5.6 12 100 15180 205 17 7.2 15.4 | 184 14 1.0 14.4 13 70 17380 190 27 4.7 26.6 | 177 26 -1.5 25.6 Wind Parameters Mean winds (0-6000m): 231.1 at 8.4 knts Storm direction: 261.1 at 6.3 knts Shear (0-3000m) pos: 0.9 neg: 1.3 tot: 2.2 10-3/s Storm rel Dir Shear (0-3000m): 140.4 deg Storm rel helicity (0-3000m) pos: 14.0 neg: -0.6 tot: 13.4 m^2/s^2 ave: 4.5 10^-3 m/s^2 rel: 0.75 Storm rel vorticity (0-3000m) horiz: 2.5 stream: 1.9 10^-3/s Energy-Hel index: 0.00 Bulk Rich Number: 5.68 Bulk Shear: 10.15 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 ------------------------------------------------------------------------------- 500 339 1 72 6| 0.0 1.1 1.1| 0.5 -0.1 0.4 0.7 0.20| 1.3 0.3 1000 270 2 78 5| 0.0 2.2 2.2| 3.0 -0.1 2.8 2.8 0.54| 2.5 1.3 1500 225 3 102 4| 0.0 2.4 2.4| 6.5 -0.1 6.4 4.2 0.66| 2.9 1.9 2000 224 4 116 4| 0.7 1.8 2.5| 9.7 -0.1 9.6 4.8 0.74| 2.9 2.1 2500 230 5 133 3| 1.1 1.5 2.6| 13.4 -0.1 13.3 5.3 0.79| 2.9 2.3 3000 233 6 150 3| 0.9 1.3 2.2| 14.0 -0.6 13.4 4.5 0.75| 2.5 1.9 4000 234 7 174 3| 0.7 1.0 1.7| 14.0 -1.8 12.2 3.1 0.66| 2.0 1.3 5000 234 8 184 4| 0.6 0.8 1.4| 14.0 -3.6 10.4 2.1 0.55| 1.7 1.0 6000 231 8 184 4| 0.5 0.7 1.2| 14.0 -8.5 5.5 0.9 0.33| 1.7 0.6 Wrote GIF file: /home/apache/climate/data/raob//U4641/skewt/U4641.skewt.20251212.12.gif