UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025041800.upa.cvt Date: 0000Z 18 APR 25 Searching for U4688... Searching the city database file for: U4688 ... Date:0000Z 18 APR 25 Station: U4688 WMO ident: 24688 Latitude: 63.27 Longitude: 143.15 ------------------------------------------------------------------------------- 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 88 1 925 710 300 9 SFC 922 735 -3.5 -14.5 42 11.0 -6.5 300 9 276.0 276.2 271.1 279.8 1.35 3 861 1262 -10.1 -19.1 48 9.0 -12.1 313 14 274.6 274.7 269.5 277.4 0.98 4 850 1360 -10.3 -19.3 48 9.0 -12.3 315 15 275.4 275.5 270.0 278.2 0.98 5 723 2595 -19.1 -25.1 59 6.0 -20.1 328 15 278.7 278.9 271.6 280.8 0.69 6 700 2837 -19.9 -24.9 64 5.0 -20.7 330 15 280.4 280.6 272.7 282.6 0.72 7 656 3314 -22.3 -26.6 68 4.3 -22.9 322 17 283.0 283.1 274.0 285.0 0.66 8 526 4903 -30.7 -37.7 50 7.0 -31.3 296 23 291.4 291.4 277.8 292.3 0.28 9 500 5260 -32.9 -41.9 40 9.0 -33.6 290 25 292.9 293.0 278.4 293.6 0.19 10 467 5737 -35.9 -44.9 39 9.0 -36.4 288 25 295.0 295.0 279.3 295.5 0.15 11 414 6559 -43.9 -52.9 36 9.0 -44.2 285 25 295.0 295.0 279.2 295.3 0.07 12 400 6790 -44.1 -53.1 36 9.0 -44.4 285 27 297.7 297.7 280.4 297.9 0.07 13 300 8710 -47.1 -60.1 21 13.0 -47.4 270 31 319.0 319.0 288.5 319.1 0.04 14 292 8889 -47.3 -61.3 19 14.0 -47.7 270 31 321.2 321.2 289.2 321.3 0.03 15 262 9602 -48.9 -62.9 18 14.0 -49.3 270 32 328.9 328.9 291.5 329.1 0.03 16 250 9910 -47.9 -62.9 16 15.0 -48.3 270 33 334.9 334.9 293.0 335.0 0.03 17 200 11390 -46.3 -63.3 13 17.0 -46.9 270 31 359.5 359.5 298.6 359.6 0.04 18 150 13300 -46.7 -64.7 11 18.0 -47.5 260 33 389.6 389.6 303.8 389.8 0.04 19 137 13901 -44.5 -63.5 10 19.0 -45.6 262 32 403.7 403.7 305.7 404.0 0.05 20 100 15970 -50.7 -69.7 9 19.0 -51.5 270 27 429.8 429.8 308.8 429.9 0.03 21 70 18280 -54.7 -72.7 9 18.0 -55.4 245 19 467.4 467.4 312.4 467.5 0.03 22 69 18372 -54.7 -72.7 9 18.0 -55.4 246 18 469.3 469.3 312.6 469.5 0.03 23 60 19273 -51.7 -70.7 9 19.0 -52.8 256 14 495.1 495.1 314.6 495.4 0.05 24 50 20450 -54.3 -73.3 8 19.0 -55.3 270 7 515.5 515.5 316.0 515.8 0.04 25 32 23306 -55.1 -75.1 7 20.0 -56.5 583.6 583.6 319.9 583.9 0.04 TRP 414 6559 -43.9 -52.9 36 9.0 -44.2 285 25 295.0 295.0 279.2 295.3 0.07 WND Sounding variables and indices 1000-500 mb thick: 5172.00 m Freezing level: Surface below freezing Wetbulb zero: Below ground Precipitable water: 0.13 inches Sfc-500 mean rel hum: 55.51 % Est. max temperature: -2.11 C = 28.20 F Sfc-Lift cond lev (LCL): 774.54 mb = 2069.45 m = 6789.46 ft T: -15.36 C 700-500 lapse rate: 5.37 C/km ThetaE index: 2.46 C Layer 861.0- 850.0 mb Conv cond level (CCL): 686.25 mb = 2982.77 m = 9785.88 ft Mean mixing ratio: 1.08 g/kg Conv temperature: 1.62 C = 34.91 F Cap Strength: 11.17 C Lifted Index: 12.20 C Risk: None Lifted Index @300 mb: 28.70 C Lifted Index @700 mb: 3.90 C Showalter Index: 12.43 C Risk: None Total Totals Index: 36.20 C Risk: None Vertical Totals Index: 22.60 C Cross Totals Index: 13.60 C K Index: -1.70 Risk: None Sweat Index: 55.00 Risk: None Energy Index: 3.21 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 3.09 J/kg Max Up Vert Vel: 2.48 m/s Conv Inhibition (B-): 44342.87 J/kg Cap Strength: 11.86 C Lift Cond Lev (LCL): 749.03 mb = 2325.09 m = 7628.16 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 332 at 15 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 ---------------------------------------------------------- 0 922 735 300 9 7.8 -4.5 | 187 8 1.0 8.4 1 850 1360 315 15 10.6 -10.6 | 240 4 3.8 2.2 2 700 2837 330 15 7.5 -13.0 | 281 1 0.7 -0.1 3 500 5260 290 25 23.5 -8.6 | 256 17 16.7 4.3 4 414 6559 285 25 24.1 -6.5 | 250 19 17.4 6.4 5 400 6790 285 27 26.1 -7.0 | 253 20 19.3 5.9 6 300 8710 270 31 31.0 -0.0 | 242 27 24.2 12.9 7 250 9910 270 33 33.0 -0.0 | 244 29 26.2 12.9 8 200 11390 270 31 31.0 -0.0 | 242 27 24.2 12.9 9 150 13300 260 33 32.5 5.7 | 234 32 25.7 18.6 10 100 15970 270 27 27.0 -0.0 | 238 24 20.2 12.9 11 70 18280 245 19 17.2 8.0 | 207 23 10.5 20.9 12 50 20450 270 7 7.0 -0.0 | 181 13 0.2 12.9 Wind Parameters Mean winds (0-6000m): 302.3 at 19.4 knts Storm direction: 332.3 at 14.5 knts Shear (0-3000m) pos: 1.4 neg: 0.9 tot: 2.4 10-3/s Storm rel Dir Shear (0-3000m): 86.6 deg Storm rel helicity (0-3000m) pos: 9.6 neg: -0.7 tot: 8.9 m^2/s^2 ave: 3.0 10^-3 m/s^2 rel: 0.38 Storm rel vorticity (0-3000m) horiz: 2.8 stream: 1.1 10^-3/s Energy-Hel index: 0.00 Bulk Rich Number: 0.35 Bulk Shear: 8.73 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 ------------------------------------------------------------------------------- 500 308 11 201 6| 5.5 0.0 5.5| 7.2 0.0 7.2 14.4 0.77| 5.5 4.3 1000 313 13 216 5| 3.7 0.0 3.7| 9.1 0.0 9.1 9.1 0.74| 4.0 2.9 1500 316 14 223 4| 2.6 0.0 2.6| 9.3 0.0 9.3 6.2 0.67| 3.1 2.1 2000 319 14 228 3| 2.1 0.0 2.1| 9.5 0.0 9.5 4.8 0.63| 2.7 1.7 2500 320 14 233 3| 1.7 0.5 2.2| 9.6 -0.1 9.5 3.8 0.51| 2.7 1.4 3000 320 15 243 3| 1.4 0.9 2.4| 9.6 -0.7 8.9 3.0 0.38| 2.8 1.1 4000 315 16 255 5| 1.1 1.6 2.7| 9.6 -6.2 3.3 0.8 0.17| 3.0 0.5 5000 307 18 256 8| 0.9 1.7 2.6| 9.6 -16.1 -6.6 -1.3 0.06| 2.9 0.2 6000 302 19 255 10| 0.7 1.6 2.3| 13.7 -21.4 -7.7 -1.3 0.05| 2.7 0.1 Wrote GIF file: /home/apache/climate/data/raob//U4688/skewt/U4688.skewt.20250418.00.gif