UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025120700.upa.cvt Date: 0000Z 7 DEC 25 Searching for U4641... Searching the city database file for: U4641 ... Date:0000Z 7 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 100 245 1 SFC 998 114 -32.9 -36.5 70 3.6 -33.1 245 1 240.4 240.4 240.2 240.8 0.17 2 974 286 -31.7 -35.5 69 3.8 -31.9 263 5 243.3 243.3 243.0 243.8 0.19 3 930 612 -32.7 -36.6 68 3.9 -32.9 296 14 245.5 245.5 245.0 246.0 0.18 4 925 650 -32.1 -36.0 68 3.9 -32.3 300 15 246.5 246.5 245.9 247.0 0.19 5 921 681 -31.9 -35.7 69 3.8 -32.1 302 15 247.0 247.0 246.4 247.5 0.20 6 914 735 -28.7 -32.8 68 4.1 -29.0 305 14 250.8 250.9 250.0 251.6 0.26 7 880 1008 -25.9 -29.3 73 3.4 -26.2 321 13 256.5 256.5 255.1 257.5 0.38 8 861 1167 -22.7 -25.8 76 3.1 -23.1 330 12 261.4 261.5 259.4 262.9 0.54 9 850 1262 -21.7 -24.4 79 2.7 -22.1 335 11 263.4 263.5 261.1 265.2 0.62 10 812 1599 -21.7 -24.3 79 2.6 -22.1 340 11 266.9 267.0 263.7 268.8 0.66 11 700 2680 -26.9 -29.8 76 2.9 -27.2 355 13 272.7 272.8 267.4 274.1 0.46 12 603 3741 -33.1 -35.8 77 2.7 -33.3 346 11 277.4 277.5 270.1 278.3 0.30 13 525 4699 -40.5 -43.4 74 2.9 -40.6 338 10 279.7 279.8 271.3 280.2 0.16 14 500 5030 -42.1 -44.7 76 2.6 -42.2 335 9 281.7 281.7 272.4 282.2 0.14 15 442 5856 -47.5 -50.1 74 2.6 -47.6 343 9 285.0 285.0 274.2 285.3 0.09 16 407 6397 -51.1 -54.0 71 2.9 -51.2 349 9 287.1 287.2 275.3 287.4 0.06 17 400 6510 -50.9 -53.9 70 3.0 -51.0 350 9 288.8 288.8 276.2 289.1 0.06 18 317 7994 -58.5 -62.0 64 3.5 -58.5 345 3 298.1 298.2 280.6 298.3 0.03 19 300 8340 -58.1 -61.6 64 3.5 -58.2 250 1 303.4 303.5 282.8 303.6 0.03 20 250 9490 -56.3 -59.9 64 3.6 -56.3 185 3 322.4 322.4 289.5 322.6 0.05 21 200 10910 -54.5 -59.1 57 4.6 -54.6 205 7 346.5 346.5 295.9 346.7 0.07 22 182 11514 -54.1 -59.0 55 4.9 -54.2 198 11 356.6 356.6 298.1 356.9 0.07 23 150 12750 -55.7 -61.7 47 6.0 -55.9 185 19 374.1 374.1 301.3 374.4 0.06 24 100 15320 -57.7 -65.7 35 8.0 -57.9 195 31 416.2 416.3 307.3 416.5 0.06 25 72 17384 -60.7 -70.7 26 10.0 -61.0 204 35 450.9 450.9 311.0 451.1 0.04 26 70 17560 -60.5 -71.5 22 11.0 -60.8 205 35 455.0 455.0 311.3 455.2 0.04 27 50 19650 -61.1 -73.1 19 12.0 -61.5 205 50 499.5 499.5 314.9 499.7 0.04 28 36 21690 -59.5 -73.5 15 14.0 -60.2 202 59 552.8 552.9 318.3 553.2 0.05 29 30 22820 -62.5 -76.5 14 14.0 -63.1 200 64 574.3 574.3 319.4 574.5 0.04 30 25 23936 -65.8 -79.8 13 14.0 -66.2 205 73 595.6 595.6 320.4 595.8 0.03 31 24 24184 -66.5 -80.5 12 14.0 -67.0 600.5 600.5 320.6 600.7 0.03 TRP 317 7994 -58.5 -62.0 64 3.5 -58.5 345 3 298.1 298.2 280.6 298.3 0.03 WND 25 23936 -65.8 -79.8 13 14.0 -66.2 205 73 595.6 595.6 320.4 595.8 0.03 Sounding variables and indices 1000-500 mb thick: 4930.00 m Freezing level: Surface below freezing Wetbulb zero: Below ground Precipitable water: 0.09 inches Sfc-500 mean rel hum: 75.20 % Est. max temperature: -9.71 C = 14.52 F Sfc-Lift cond lev (LCL): 938.41 mb = 548.44 m = 1799.33 ft T: -32.51 C 700-500 lapse rate: 6.47 C/km ThetaE index: 0.00 C Layer 998.0- 0.1 mb Conv cond level (CCL): 517.38 mb = 4798.15 m = 15741.76 ft Mean mixing ratio: 0.20 g/kg Conv temperature: 7.01 C = 44.62 F Cap Strength: 27.92 C Lifted Index: 29.19 C Risk: None Lifted Index @300 mb: 40.61 C Lifted Index @700 mb: 24.12 C Showalter Index: 13.66 C Risk: None Total Totals Index: 38.10 C Risk: None Vertical Totals Index: 20.40 C Cross Totals Index: 17.70 C K Index: -6.90 Risk: None Sweat Index: 31.00 Risk: None Energy Index: 3.61 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 42.18 J/kg Max Up Vert Vel: 9.18 m/s Conv Inhibition (B-): 58025.30 J/kg Cap Strength: 28.68 C Lift Cond Lev (LCL): 889.33 mb = 932.20 m = 3058.35 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 9 at 8 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 ---------------------------------------------------------- 0 998 114 245 1 0.9 0.4 | 194 9 2.2 8.4 1 925 650 300 15 13.0 -7.5 | 268 14 14.2 0.5 2 850 1262 335 11 4.6 -10.0 | 289 6 5.9 -2.0 3 700 2680 355 13 1.1 -13.0 | 334 5 2.4 -5.0 4 500 5030 335 9 3.8 -8.2 | 272 5 5.1 -0.2 5 400 6510 350 9 1.6 -8.9 | 287 3 2.8 -0.9 6 317 7994 345 3 0.8 -2.9 | 202 5 2.0 5.1 7 300 8340 250 1 0.9 0.3 | 195 9 2.2 8.3 8 250 9490 185 3 0.3 3.0 | 188 11 1.5 11.0 9 200 10910 205 7 3.0 6.3 | 196 15 4.2 14.3 10 150 12750 185 19 1.7 18.9 | 186 27 2.9 26.9 11 100 15320 195 31 8.0 29.9 | 194 39 9.3 37.9 12 70 17560 205 35 14.8 31.7 | 202 43 16.0 39.7 13 50 19650 205 50 21.1 45.3 | 203 58 22.4 53.3 14 30 22820 200 64 21.9 60.1 | 199 72 23.1 68.1 Wind Parameters Mean winds (0-6000m): 338.9 at 10.8 knts Storm direction: 8.9 at 8.1 knts Shear (0-3000m) pos: 2.3 neg: 0.2 tot: 2.4 10-3/s Storm rel Dir Shear (0-3000m): 128.7 deg Storm rel helicity (0-3000m) pos: 65.0 neg: -1.4 tot: 63.7 m^2/s^2 ave: 21.2 10^-3 m/s^2 rel: 0.74 Storm rel vorticity (0-3000m) horiz: 5.2 stream: 3.8 10^-3/s Energy-Hel index: 0.02 Bulk Rich Number: 6.08 Bulk Shear: 6.94 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 ------------------------------------------------------------------------------- 500 297 8 240 9| 13.8 0.0 13.8| 43.1 0.0 43.1 86.2 0.93| 15.4 14.3 1000 306 10 259 10| 6.1 0.0 6.1| 57.2 0.0 57.2 57.2 0.80| 11.7 9.4 1500 315 11 268 9| 4.0 0.0 4.0| 59.9 0.0 59.9 40.0 0.77| 8.8 6.8 2000 323 11 276 8| 3.2 0.0 3.2| 62.3 0.0 62.3 31.2 0.79| 7.1 5.5 2500 330 11 284 7| 2.7 0.0 2.7| 64.8 0.0 64.8 25.9 0.80| 6.0 4.8 3000 334 12 291 7| 2.3 0.2 2.4| 65.0 -1.4 63.7 21.2 0.74| 5.2 3.8 4000 338 12 295 6| 1.7 0.4 2.1| 65.0 -4.5 60.6 15.1 0.61| 4.2 2.6 5000 339 11 294 6| 1.4 0.5 1.9| 65.1 -7.1 58.0 11.6 0.52| 3.6 1.9 6000 339 11 292 6| 1.2 0.4 1.6| 65.8 -7.1 58.8 9.8 0.52| 3.1 1.6 Wrote GIF file: /home/apache/climate/data/raob//U4641/skewt/U4641.skewt.20251207.00.gif