UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025120412.upa.cvt Date: 1200Z 4 DEC 25 Searching for U4641... Searching the city database file for: U4641 ... Date:1200Z 4 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 ------------------------------------------------------------------------------- 0 1000 41 SFC 990 112 -31.3 -34.6 73 3.3 -31.5 60 3 242.5 242.6 242.3 243.1 0.20 2 968 271 -32.7 -37.4 63 4.7 -32.9 93 4 242.7 242.7 242.3 243.1 0.16 3 962 315 -29.7 -34.4 64 4.7 -30.0 102 4 246.2 246.2 245.7 246.8 0.22 4 959 337 -26.3 -31.1 64 4.8 -26.7 107 4 249.8 249.9 249.2 250.6 0.30 5 953 383 -24.3 -29.1 64 4.8 -24.8 116 4 252.3 252.4 251.5 253.3 0.36 6 941 475 -23.5 -27.9 67 4.4 -23.9 135 4 254.0 254.1 253.1 255.2 0.41 7 936 514 -19.9 -24.0 70 4.1 -20.4 143 5 258.1 258.2 256.9 259.7 0.59 8 925 602 -18.7 -22.3 73 3.6 -19.3 160 5 260.2 260.3 258.8 262.1 0.69 9 912 708 -18.3 -21.2 78 2.9 -18.8 162 5 261.7 261.8 260.0 263.8 0.77 10 850 1232 -19.1 -22.1 77 3.0 -19.6 170 7 266.1 266.3 263.4 268.3 0.76 11 828 1427 -18.5 -21.5 77 3.0 -19.0 188 6 268.8 268.9 265.4 271.1 0.83 12 715 2506 -25.5 -28.6 75 3.1 -25.9 286 3 272.6 272.7 267.4 274.1 0.50 13 702 2639 -24.3 -27.4 75 3.1 -24.7 298 3 275.4 275.4 269.3 277.1 0.57 14 700 2660 -24.3 -27.4 75 3.1 -24.7 300 3 275.6 275.7 269.5 277.3 0.58 15 666 3022 -25.5 -28.5 76 3.0 -25.9 301 3 278.2 278.3 271.0 279.8 0.55 16 500 5040 -39.7 -43.6 66 3.9 -39.9 305 3 284.6 284.7 274.1 285.2 0.16 17 441 5888 -45.5 -49.1 67 3.6 -45.6 232 4 287.7 287.7 275.6 288.1 0.10 18 400 6530 -51.1 -54.6 66 3.5 -51.2 175 5 288.6 288.6 276.0 288.8 0.06 19 369 7049 -55.5 -59.2 63 3.7 -55.5 178 6 289.5 289.5 276.5 289.6 0.04 20 341 7551 -55.7 -59.4 63 3.7 -55.8 182 8 295.8 295.8 279.5 295.9 0.04 21 315 8053 -58.1 -61.9 62 3.8 -58.2 185 9 299.2 299.2 281.0 299.4 0.03 22 300 8360 -57.7 -61.5 62 3.8 -57.8 205 9 304.0 304.0 283.1 304.1 0.03 23 281 8773 -57.5 -61.3 62 3.8 -57.6 227 9 310.0 310.0 285.4 310.2 0.04 24 250 9510 -58.7 -62.7 60 4.0 -58.7 265 9 318.8 318.8 288.4 318.9 0.03 25 200 10910 -57.3 -61.6 58 4.3 -57.4 280 15 342.0 342.0 294.8 342.2 0.05 26 150 12720 -58.3 -63.0 55 4.7 -58.4 280 19 369.6 369.6 300.5 369.9 0.05 27 100 15250 -61.1 -66.1 51 5.0 -61.2 280 21 409.7 409.7 306.5 409.9 0.05 28 70 17430 -65.3 -71.3 43 6.0 -65.4 255 19 444.7 444.7 310.4 444.9 0.04 29 56 18785 -67.9 -73.9 42 6.0 -68.0 242 23 468.1 468.1 312.5 468.2 0.03 30 50 19470 -67.1 -73.1 42 6.0 -67.2 235 25 485.4 485.4 313.9 485.6 0.04 31 33 21982 -65.3 -72.3 37 7.0 -65.6 219 28 551.4 551.4 318.2 551.8 0.07 32 30 22560 -66.1 -74.1 32 8.0 -66.4 215 29 564.4 564.5 318.9 564.8 0.06 33 25 23661 -67.9 -74.9 36 7.0 -68.2 589.5 589.5 320.2 589.9 0.06 34 21 24717 -64.7 -72.7 32 8.0 -65.2 629.3 629.3 321.9 630.1 0.10 TRP 315 8053 -58.1 -61.9 62 3.8 -58.2 185 9 299.2 299.2 281.0 299.4 0.03 WND Sounding variables and indices 1000-500 mb thick: 4999.00 m Freezing level: Surface below freezing Wetbulb zero: Below ground Precipitable water: 0.11 inches Sfc-500 mean rel hum: 73.26 % Est. max temperature: -6.59 C = 20.13 F Sfc-Lift cond lev (LCL): 935.96 mb = 514.51 m = 1687.99 ft T: -19.90 C 700-500 lapse rate: 6.47 C/km ThetaE index: 0.00 C Layer 990.0--8390752015546130719055026944212992.0 mb Conv cond level (CCL): 990.00 mb = 112.11 m = 367.81 ft Mean mixing ratio: 0.49 g/kg Conv temperature: -25.34 C = -13.62 F Cap Strength: 20.48 C Lifted Index: 23.97 C Risk: None Lifted Index @300 mb: 34.39 C Lifted Index @700 mb: 18.51 C Showalter Index: 13.54 C Risk: None Total Totals Index: 38.20 C Risk: None Vertical Totals Index: 20.60 C Cross Totals Index: 17.60 C K Index: -4.60 Risk: None Sweat Index: 17.00 Risk: None Energy Index: 3.58 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 104.97 J/kg Max Up Vert Vel: 14.49 m/s Conv Inhibition (B-): 57229.16 J/kg Cap Strength: 23.90 C Lift Cond Lev (LCL): 902.87 mb = 782.51 m = 2567.25 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 266 at 3 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 ---------------------------------------------------------- 0 990 112 60 3 -2.6 -1.5 | 73 6 -5.6 -1.7 1 925 602 160 5 -1.7 4.7 | 134 6 -4.7 4.5 2 850 1232 170 7 -1.2 6.9 | 148 8 -4.2 6.7 3 700 2660 300 3 2.6 -1.5 | 12 2 -0.4 -1.7 4 500 5040 305 3 2.5 -1.7 | 15 2 -0.5 -1.9 5 400 6530 175 5 -0.4 5.0 | 144 6 -3.4 4.8 6 315 8053 185 9 0.8 9.0 | 166 9 -2.2 8.7 7 300 8360 205 9 3.8 8.2 | 186 8 0.8 7.9 8 250 9510 265 9 9.0 0.8 | 265 6 6.0 0.6 9 200 10910 280 15 14.8 -2.6 | 283 12 11.8 -2.8 10 150 12720 280 19 18.7 -3.3 | 283 16 15.7 -3.5 11 100 15250 280 21 20.7 -3.6 | 282 18 17.7 -3.9 12 70 17430 255 19 18.4 4.9 | 253 16 15.4 4.7 13 50 19470 235 25 20.5 14.3 | 231 22 17.5 14.1 14 30 22560 215 29 16.6 23.8 | 210 27 13.7 23.5 Wind Parameters Mean winds (0-6000m): 235.7 at 4.0 knts Storm direction: 265.7 at 3.0 knts Shear (0-3000m) pos: 0.9 neg: 0.0 tot: 0.9 10-3/s Storm rel Dir Shear (0-3000m): -59.9 deg Storm rel helicity (0-3000m) pos: 24.5 neg: 0.0 tot: 24.5 m^2/s^2 ave: 8.2 10^-3 m/s^2 rel: 0.83 Storm rel vorticity (0-3000m) horiz: 3.7 stream: 3.1 10^-3/s Energy-Hel index: 0.02 Bulk Rich Number: 18.95 Bulk Shear: 5.54 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 ------------------------------------------------------------------------------- 500 128 4 110 7| 6.5 0.0 6.5| 12.3 0.0 12.3 24.5 0.97| 7.5 7.3 1000 153 5 128 7| 4.2 0.0 4.2| 14.9 0.0 14.9 14.9 0.93| 4.7 4.3 1500 165 5 139 7| 2.9 0.0 2.9| 20.8 0.0 20.8 13.9 0.88| 4.6 4.1 2000 175 5 146 6| 1.9 0.0 1.9| 23.5 0.0 23.5 11.7 0.82| 4.6 3.8 2500 174 5 144 6| 1.1 0.0 1.1| 24.4 0.0 24.4 9.7 0.83| 4.4 3.6 3000 180 5 147 5| 0.9 0.0 0.9| 24.5 0.0 24.5 8.2 0.83| 3.7 3.1 4000 203 4 161 4| 0.7 0.0 0.7| 24.5 0.0 24.5 6.1 0.82| 2.8 2.3 5000 233 4 186 2| 0.5 0.0 0.6| 24.5 -0.1 24.4 4.9 0.80| 2.3 1.8 6000 236 4 189 2| 0.4 0.5 0.9| 24.5 -1.7 22.8 3.8 0.49| 2.4 1.2 Wrote GIF file: /home/apache/climate/data/raob//U4641/skewt/U4641.skewt.20251204.12.gif