UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025121712.upa.cvt Date: 1200Z 17 DEC 25 Searching for U4641... Searching the city database file for: U4641 ... Date:1200Z 17 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 1009 111 -45.1 -49.4 62 4.3 -45.2 225 1 227.5 227.5 227.4 227.6 0.04 1 1000 171 -45.5 -50.5 57 5.0 -45.6 250 3 227.6 227.7 227.6 227.8 0.04 2 997 191 -42.1 -48.1 52 6.0 -42.2 253 3 231.2 231.3 231.1 231.4 0.05 3 989 246 -36.5 -42.5 54 6.0 -36.7 261 4 237.4 237.4 237.2 237.7 0.09 4 942 589 -30.5 -36.5 56 6.0 -30.9 311 11 246.8 246.9 246.2 247.3 0.18 5 925 719 -27.1 -33.1 57 6.0 -27.5 330 13 251.6 251.6 250.6 252.3 0.25 6 917 782 -24.9 -30.9 57 6.0 -25.4 334 13 254.5 254.5 253.2 255.4 0.32 7 893 975 -25.5 -30.5 63 5.0 -25.9 345 15 255.8 255.8 254.4 256.7 0.34 8 850 1334 -23.5 -28.4 64 4.9 -24.0 5 17 261.5 261.6 259.3 262.8 0.43 9 847 1360 -23.3 -28.2 64 4.9 -23.8 5 17 262.0 262.1 259.7 263.3 0.44 10 810 1687 -22.9 -27.5 66 4.6 -23.5 4 17 265.8 265.9 262.6 267.2 0.49 11 700 2744 -28.9 -33.1 67 4.2 -29.3 360 19 270.5 270.5 265.7 271.5 0.34 12 635 3433 -33.7 -38.7 61 5.0 -34.0 356 17 272.7 272.7 266.9 273.3 0.21 13 518 4840 -40.3 -46.3 53 6.0 -40.5 347 12 281.0 281.1 272.0 281.4 0.12 14 500 5080 -42.5 -48.5 52 6.0 -42.7 345 11 281.2 281.2 272.1 281.5 0.09 15 400 6560 -51.5 -57.5 49 6.0 -51.6 330 15 288.1 288.1 275.7 288.2 0.04 16 331 7764 -58.5 -64.5 46 6.0 -58.6 335 15 294.5 294.5 278.9 294.6 0.02 17 300 8380 -58.5 -64.5 46 6.0 -58.6 320 11 302.9 302.9 282.5 303.0 0.02 18 294 8508 -58.7 -64.7 46 6.0 -58.7 307 10 304.4 304.4 283.2 304.4 0.02 19 250 9540 -56.9 -62.9 47 6.0 -57.0 200 3 321.5 321.5 289.2 321.6 0.03 20 200 10960 -56.1 -63.1 41 7.0 -56.2 235 7 343.9 343.9 295.3 344.1 0.04 21 169 12025 -55.1 -63.1 36 8.0 -55.3 235 9 362.6 362.6 299.2 362.8 0.05 22 150 12780 -56.3 -64.3 36 8.0 -56.5 235 11 373.1 373.1 301.1 373.3 0.04 23 100 15340 -59.1 -70.1 23 11.0 -59.3 230 15 413.5 413.5 307.0 413.7 0.03 24 90 15998 -60.1 -71.1 22 11.0 -60.3 231 17 424.2 424.2 308.2 424.4 0.03 25 70 17570 -58.5 -70.5 20 12.0 -58.9 235 23 459.2 459.2 311.7 459.5 0.04 26 50 19680 -58.5 -72.5 15 14.0 -59.1 235 29 505.6 505.6 315.4 505.9 0.04 27 49 19807 -58.5 -72.5 15 14.0 -59.1 508.6 508.6 315.5 508.8 0.04 TRP 331 7764 -58.5 -64.5 46 6.0 -58.6 335 15 294.5 294.5 278.9 294.6 0.02 WND Sounding variables and indices 1000-500 mb thick: 4909.00 m Freezing level: Surface below freezing Wetbulb zero: Below ground Precipitable water: 0.06 inches Sfc-500 mean rel hum: 60.48 % Est. max temperature: -12.19 C = 10.06 F Sfc-Lift cond lev (LCL): 933.98 mb = 649.80 m = 2131.85 ft T: -28.90 C 700-500 lapse rate: 5.82 C/km ThetaE index: 0.00 C Layer 1009.0- -0.0 mb Conv cond level (CCL): 1000.00 mb = 171.00 m = 561.02 ft Mean mixing ratio: 0.16 g/kg Conv temperature: -36.28 C = -33.31 F Cap Strength: 31.11 C Lifted Index: 30.90 C Risk: None Lifted Index @300 mb: 42.03 C Lifted Index @700 mb: 24.40 C Showalter Index: 15.22 C Risk: None Total Totals Index: 33.10 C Risk: None Vertical Totals Index: 19.00 C Cross Totals Index: 14.10 C K Index: -13.60 Risk: None Sweat Index: 45.00 Risk: None Energy Index: 3.98 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 86.25 J/kg Max Up Vert Vel: 13.13 m/s Conv Inhibition (B-): 46811.44 J/kg Cap Strength: 31.00 C Lift Cond Lev (LCL): 889.86 mb = 1000.18 m = 3281.40 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 22 at 11 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 1009 111 225 1 0.7 0.7 | 204 12 4.8 10.7 1 1000 171 250 3 2.8 1.0 | 212 13 6.9 11.0 2 925 719 330 13 6.5 -11.3 | 277 11 10.6 -1.2 3 850 1334 5 17 -1.5 -16.9 | 339 7 2.6 -6.9 4 700 2744 360 19 -0.0 -19.0 | 335 10 4.1 -9.0 5 500 5080 345 11 2.8 -10.6 | 275 7 7.0 -0.6 6 400 6560 330 15 7.5 -13.0 | 284 12 11.6 -3.0 7 331 7764 335 15 6.3 -13.6 | 289 11 10.5 -3.6 8 300 8380 320 11 7.1 -8.4 | 262 11 11.2 1.6 9 250 9540 200 3 1.0 2.8 | 202 14 5.1 12.8 10 200 10960 235 7 5.7 4.0 | 215 17 9.9 14.0 11 150 12780 235 11 9.0 6.3 | 219 21 13.1 16.3 12 100 15340 230 15 11.5 9.6 | 218 25 15.6 19.7 13 70 17570 235 23 18.8 13.2 | 225 33 23.0 23.2 14 50 19680 235 29 23.8 16.6 | 226 39 27.9 26.7 Wind Parameters Mean winds (0-6000m): 352.3 at 14.4 knts Storm direction: 22.3 at 10.8 knts Shear (0-3000m) pos: 3.1 neg: 0.3 tot: 3.5 10-3/s Storm rel Dir Shear (0-3000m): 123.6 deg Storm rel helicity (0-3000m) pos: 76.2 neg: -4.4 tot: 71.8 m^2/s^2 ave: 23.9 10^-3 m/s^2 rel: 0.76 Storm rel vorticity (0-3000m) horiz: 5.3 stream: 4.1 10^-3/s Energy-Hel index: 0.04 Bulk Rich Number: 4.75 Bulk Shear: 18.17 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 ------------------------------------------------------------------------------- 500 300 6 235 12| 11.4 0.0 11.4| 44.2 0.0 44.2 88.4 0.94| 13.9 13.0 1000 331 10 262 9| 8.3 0.0 8.3| 68.5 0.0 68.5 68.5 0.93| 12.1 11.2 1500 346 12 284 7| 6.2 0.0 6.2| 76.2 -0.1 76.0 50.7 0.92| 9.5 8.7 2000 352 14 299 7| 4.7 0.2 4.9| 76.2 -0.6 75.6 37.8 0.89| 7.3 6.5 2500 355 15 309 7| 3.7 0.4 4.1| 76.2 -1.1 75.1 30.0 0.85| 6.1 5.2 3000 356 15 314 7| 3.1 0.3 3.5| 76.2 -4.4 71.8 23.9 0.76| 5.3 4.1 4000 355 15 315 8| 2.3 0.6 2.9| 76.2 -12.1 64.1 16.0 0.58| 4.5 2.6 5000 355 15 311 7| 1.9 0.8 2.7| 76.2 -18.7 57.5 11.5 0.44| 4.0 1.7 6000 352 14 305 7| 1.6 0.7 2.3| 78.8 -18.7 60.1 10.0 0.43| 3.6 1.5 Wrote GIF file: /home/apache/climate/data/raob//U4641/skewt/U4641.skewt.20251217.12.gif