UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025122512.upa.cvt Date: 1200Z 25 DEC 25 Searching for U4641... Searching the city database file for: U4641 ... Date:1200Z 25 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 1018 114 -44.9 -49.6 59 4.7 -45.0 55 1 227.1 227.1 227.1 227.2 0.04 1 1015 134 -43.7 -49.7 51 6.0 -43.8 61 1 228.5 228.5 228.4 228.6 0.04 2 1014 141 -41.5 -48.5 47 7.0 -41.6 63 1 230.7 230.7 230.6 230.9 0.05 3 1012 154 -39.9 -46.9 47 7.0 -40.1 67 1 232.5 232.5 232.3 232.6 0.06 4 1000 235 -39.5 -46.5 47 7.0 -39.6 90 1 233.6 233.7 233.5 233.8 0.06 5 985 339 -39.1 -46.1 47 7.0 -39.3 112 2 235.1 235.1 234.8 235.2 0.06 6 982 360 -36.1 -43.1 48 7.0 -36.3 117 2 238.3 238.3 238.0 238.5 0.09 7 965 483 -29.5 -36.5 51 7.0 -29.9 143 4 246.1 246.2 245.6 246.6 0.17 8 930 749 -25.5 -31.5 57 6.0 -26.0 197 7 252.8 252.9 251.8 253.7 0.29 9 925 788 -25.5 -30.5 63 5.0 -25.9 205 7 253.2 253.3 252.2 254.1 0.33 10 850 1400 -26.7 -31.2 66 4.5 -27.1 185 5 258.2 258.2 256.4 259.1 0.33 11 707 2724 -28.7 -33.0 66 4.3 -29.1 85 7 269.9 270.0 265.3 270.9 0.34 12 700 2795 -29.1 -33.5 66 4.4 -29.5 80 7 270.3 270.3 265.5 271.2 0.32 13 500 5130 -42.9 -50.9 41 8.0 -43.2 30 11 280.7 280.7 271.7 281.0 0.07 14 400 6610 -51.1 -59.1 38 8.0 -51.2 355 17 288.6 288.6 276.0 288.7 0.03 15 334 7760 -57.9 -64.9 40 7.0 -58.0 352 20 294.5 294.5 278.9 294.6 0.02 16 300 8430 -60.7 -67.7 39 7.0 -60.7 350 21 299.8 299.8 281.3 299.8 0.01 17 271 9062 -62.9 -69.9 38 7.0 -63.0 350 21 305.4 305.4 283.6 305.5 0.01 18 263 9247 -63.1 -70.1 38 7.0 -63.1 356 20 307.8 307.8 284.5 307.8 0.01 19 250 9560 -62.5 -69.5 38 7.0 -62.6 5 19 313.1 313.2 286.5 313.2 0.01 20 244 9711 -62.5 -69.5 38 7.0 -62.6 2 18 315.3 315.3 287.2 315.4 0.01 21 200 10950 -59.9 -66.9 40 7.0 -60.0 335 11 337.9 337.9 293.8 338.0 0.02 22 168 12040 -58.5 -66.5 35 8.0 -58.6 314 9 357.5 357.5 298.2 357.6 0.03 23 150 12750 -59.3 -67.3 35 8.0 -59.5 300 7 367.9 367.9 300.2 368.1 0.03 24 100 15290 -59.9 -69.9 26 10.0 -60.1 270 11 412.0 412.0 306.7 412.2 0.03 25 70 17520 -60.1 -72.1 19 12.0 -60.4 235 21 455.8 455.8 311.4 456.0 0.03 26 55 19030 -59.3 -71.3 20 12.0 -59.7 235 25 490.2 490.2 314.2 490.5 0.05 27 50 19630 -57.3 -70.3 18 13.0 -57.9 235 27 508.4 508.5 315.5 508.8 0.06 28 44 20444 -53.5 -67.5 17 14.0 -54.6 232 34 536.7 536.7 317.3 537.3 0.10 29 30 22940 -47.5 -64.5 12 17.0 -50.3 225 54 615.1 615.2 321.3 616.8 0.22 30 22 25015 -42.0 -62.8 9 20.8 -47.4 230 69 688.6 688.8 324.1 691.8 0.37 31 20 25663 -40.3 -62.3 8 22.0 -46.7 712.8 713.0 325.0 716.7 0.44 TRP 271 9062 -62.9 -69.9 38 7.0 -63.0 350 21 305.4 305.4 283.6 305.5 0.01 WND 22 25015 -42.0 -62.8 9 20.8 -47.4 230 69 688.6 688.8 324.1 691.8 0.37 Sounding variables and indices 1000-500 mb thick: 4895.00 m Freezing level: Surface below freezing Wetbulb zero: Below ground Precipitable water: 0.06 inches Sfc-500 mean rel hum: 57.86 % Est. max temperature: -14.89 C = 5.19 F Sfc-Lift cond lev (LCL): 935.57 mb = 705.83 m = 2315.68 ft T: -26.15 C 700-500 lapse rate: 5.91 C/km ThetaE index: 0.00 C Layer 1018.0-272008302207532160516096.0 mb Conv cond level (CCL): 1015.00 mb = 133.97 m = 439.54 ft Mean mixing ratio: 0.17 g/kg Conv temperature: -36.25 C = -33.26 F Cap Strength: 24.20 C Lifted Index: 30.50 C Risk: None Lifted Index @300 mb: 39.83 C Lifted Index @700 mb: 24.20 C Showalter Index: 17.78 C Risk: None Total Totals Index: 27.90 C Risk: None Vertical Totals Index: 16.20 C Cross Totals Index: 11.70 C K Index: -19.40 Risk: None Sweat Index: 21.00 Risk: None Energy Index: 4.66 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 105.50 J/kg Max Up Vert Vel: 14.53 m/s Conv Inhibition (B-): 64152.25 J/kg Cap Strength: 30.38 C Lift Cond Lev (LCL): 894.30 mb = 1032.28 m = 3386.71 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 81 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 1018 114 55 1 -0.8 -0.6 | 266 5 5.2 0.4 1 1000 235 90 1 -1.0 0.0 | 259 5 5.0 1.0 2 925 788 205 7 3.0 6.3 | 231 12 8.9 7.3 3 850 1400 185 5 0.4 5.0 | 227 9 6.4 5.9 4 700 2795 80 7 -6.9 -1.2 | 75 1 -0.9 -0.3 5 500 5130 30 11 -5.5 -9.5 | 357 9 0.5 -8.6 6 400 6610 355 17 1.5 -16.9 | 335 18 7.5 -16.0 7 300 8430 350 21 3.6 -20.7 | 334 22 9.6 -19.7 8 271 9062 350 21 3.6 -20.7 | 334 22 9.6 -19.7 9 250 9560 5 19 -1.7 -18.9 | 346 18 4.3 -18.0 10 200 10950 335 11 4.6 -10.0 | 310 14 10.6 -9.0 11 150 12750 300 7 6.1 -3.5 | 282 12 12.0 -2.5 12 100 15290 270 11 11.0 -0.0 | 267 17 17.0 1.0 13 70 17520 235 21 17.2 12.0 | 241 27 23.2 13.0 14 50 19630 235 27 22.1 15.5 | 240 33 28.1 16.4 15 30 22940 225 54 38.2 38.2 | 228 59 44.2 39.1 Wind Parameters Mean winds (0-6000m): 50.9 at 8.1 knts Storm direction: 80.9 at 6.0 knts Shear (0-3000m) pos: 1.2 neg: 2.0 tot: 3.2 10-3/s Storm rel Dir Shear (0-3000m): 139.9 deg Storm rel helicity (0-3000m) pos: 4.7 neg: -16.5 tot: -11.8 m^2/s^2 ave: -3.9 10^-3 m/s^2 rel: -0.43 Storm rel vorticity (0-3000m) horiz: 4.4 stream: -1.9 10^-3/s Energy-Hel index: 0.00 Bulk Rich Number: 10.07 Bulk Shear: 10.47 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 ------------------------------------------------------------------------------- 500 152 3 236 6| 5.8 0.0 5.8| 0.0 -5.0 -5.0 -10.0 -0.60| 6.7 -4.0 1000 197 4 235 9| 3.5 0.0 3.5| 4.7 -6.3 -1.6 -1.6 -0.21| 6.2 -1.3 1500 193 5 232 9| 2.3 0.9 3.2| 4.7 -9.4 -4.6 -3.1 -0.26| 5.1 -1.3 2000 180 5 226 8| 1.7 1.6 3.3| 4.7 -13.9 -9.1 -4.6 -0.35| 4.8 -1.7 2500 165 5 217 8| 1.4 2.0 3.4| 4.7 -15.9 -11.2 -4.5 -0.38| 4.7 -1.8 3000 145 6 207 6| 1.2 2.0 3.2| 4.7 -16.5 -11.8 -3.9 -0.43| 4.4 -1.9 4000 106 6 179 3| 0.9 1.9 2.7| 4.7 -18.0 -13.2 -3.3 -0.43| 3.8 -1.6 5000 74 7 42 1| 0.7 1.7 2.4| 4.7 -21.7 -17.0 -3.4 -0.44| 3.4 -1.5 6000 51 8 4 4| 0.6 1.8 2.4| 4.7 -30.7 -26.0 -4.3 -0.44| 3.4 -1.5 Wrote GIF file: /home/apache/climate/data/raob//U4641/skewt/U4641.skewt.20251225.12.gif