UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025041600.upa.cvt Date: 0000Z 16 APR 25 Searching for U4688... Searching the city database file for: U4688 ... Date:0000Z 16 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 19 1 925 646 SFC 914 741 -1.3 -2.3 93 1.0 -1.7 160 1 278.9 279.5 276.0 288.7 3.53 3 879 1050 -5.1 -7.1 86 2.0 -5.8 165 4 278.1 278.6 274.2 285.3 2.55 4 850 1313 -6.3 -8.2 86 1.9 -7.0 170 7 279.5 280.0 274.8 286.4 2.42 5 709 2707 -14.3 -16.6 83 2.3 -14.9 193 18 285.6 285.9 276.6 290.0 1.47 6 700 2804 -14.5 -16.8 83 2.3 -15.1 195 19 286.4 286.7 277.0 290.8 1.46 7 608 3867 -17.5 -19.2 87 1.7 -17.9 197 28 294.7 295.0 280.9 299.0 1.38 8 500 5310 -25.7 -28.2 79 2.5 -26.1 200 40 301.7 301.8 283.1 304.2 0.75 9 447 6111 -29.9 -32.4 79 2.5 -30.2 203 47 306.2 306.3 284.6 308.2 0.56 10 400 6890 -35.3 -38.4 73 3.1 -35.6 205 54 309.1 309.2 285.4 310.3 0.35 11 300 8830 -49.3 -53.1 64 3.8 -49.4 205 64 315.9 315.9 287.5 316.2 0.09 12 297 8896 -49.8 -53.6 64 3.8 -49.9 205 68 316.1 316.1 287.6 316.4 0.09 13 250 10010 -57.9 -61.9 60 4.0 -58.0 205 66 320.0 320.0 288.8 320.1 0.04 14 249 10035 -58.1 -62.2 59 4.1 -58.2 205 66 320.1 320.1 288.8 320.2 0.04 15 200 11440 -49.5 -54.4 56 4.9 -49.7 220 25 354.4 354.4 297.7 354.9 0.12 16 192 11708 -48.9 -53.9 56 5.0 -49.1 221 24 359.5 359.5 298.7 360.1 0.13 17 150 13330 -48.7 -54.7 50 6.0 -49.1 230 17 386.2 386.2 303.3 386.9 0.15 18 101 15915 -51.7 -61.7 29 10.0 -52.2 279 11 426.6 426.6 308.5 427.1 0.09 19 100 15980 -51.7 -61.7 29 10.0 -52.2 280 11 427.8 427.9 308.7 428.3 0.09 20 70 18280 -52.5 -64.5 22 12.0 -53.2 305 11 472.1 472.1 312.8 472.6 0.09 21 50 20430 -55.5 -69.5 16 14.0 -56.3 305 15 512.7 512.7 315.8 513.1 0.07 22 37 22341 -57.5 -73.5 11 16.0 -58.4 296 21 553.7 553.7 318.3 554.0 0.05 23 30 23670 -55.9 -72.9 10 17.0 -57.2 290 25 592.2 592.3 320.3 592.7 0.07 24 20 26270 -52.9 -69.9 11 17.0 -55.3 280 23 674.3 674.3 323.6 675.6 0.16 25 10 30820 -47.5 -67.5 8 20.0 -53.4 842.2 842.5 328.3 846.8 0.43 26 9.6 31091 -45.9 -65.9 9 20.0 -52.6 858.2 858.5 328.7 864.2 0.56 TRP 249 10035 -58.1 -62.2 59 4.1 -58.2 205 66 320.1 320.1 288.8 320.2 0.04 WND 297 8896 -49.8 -53.6 64 3.8 -49.9 205 68 316.1 316.1 287.6 316.4 0.09 Sounding variables and indices 1000-500 mb thick: 5291.00 m Freezing level: Surface below freezing Wetbulb zero: Below ground Precipitable water: 0.33 inches Sfc-500 mean rel hum: 84.41 % Est. max temperature: 2.79 C = 37.01 F Sfc-Lift cond lev (LCL): 899.65 mb = 866.44 m = 2842.61 ft T: -2.84 C 700-500 lapse rate: 4.47 C/km ThetaE index: 3.45 C Layer 879.0- 850.0 mb Conv cond level (CCL): 823.01 mb = 1561.04 m = 5121.45 ft Mean mixing ratio: 2.60 g/kg Conv temperature: 0.36 C = 32.65 F Cap Strength: 8.99 C Lifted Index: 13.13 C Risk: None Lifted Index @300 mb: 20.76 C Lifted Index @700 mb: 3.41 C Showalter Index: 13.25 C Risk: None Total Totals Index: 36.90 C Risk: None Vertical Totals Index: 19.40 C Cross Totals Index: 17.50 C K Index: 8.90 Risk: None Sweat Index: 54.00 Risk: None Energy Index: 3.67 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 12.08 J/kg Max Up Vert Vel: 4.91 m/s Conv Inhibition (B-): 75130.31 J/kg Cap Strength: 13.10 C Lift Cond Lev (LCL): 840.01 mb = 1403.85 m = 4605.74 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 229 at 21 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 ---------------------------------------------------------- 0 914 741 160 1 -0.3 0.9 | 51 20 -15.8 -12.6 1 850 1313 170 7 -1.2 6.9 | 68 18 -16.6 -6.7 2 700 2804 195 19 4.9 18.4 | 114 12 -10.5 4.8 3 500 5310 200 40 13.7 37.6 | 176 24 -1.7 24.0 4 400 6890 205 54 22.8 48.9 | 192 36 7.4 35.4 5 300 8830 205 64 27.0 58.0 | 195 46 11.6 44.4 6 297 8896 205 68 28.7 61.6 | 195 50 13.3 48.1 7 250 10010 205 66 27.9 59.8 | 195 48 12.5 46.2 8 249 10035 205 66 27.9 59.8 | 195 48 12.5 46.2 9 200 11440 220 25 16.1 19.2 | 187 6 0.6 5.6 10 150 13330 230 17 13.0 10.9 | 42 4 -2.4 -2.6 11 100 15980 280 11 10.8 -1.9 | 17 16 -4.6 -15.5 12 70 18280 305 11 9.0 -6.3 | 18 21 -6.4 -19.9 13 50 20430 305 15 12.3 -8.6 | 8 22 -3.1 -22.2 14 30 23670 290 25 23.5 -8.6 | 340 24 8.1 -22.1 15 20 26270 280 23 22.7 -4.0 | 338 19 7.2 -17.6 Wind Parameters Mean winds (0-6000m): 198.7 at 27.4 knts Storm direction: 228.7 at 20.5 knts Shear (0-3000m) pos: 4.5 neg: 0.0 tot: 4.5 10-3/s Storm rel Dir Shear (0-3000m): 96.5 deg Storm rel helicity (0-3000m) pos: 98.2 neg: 0.0 tot: 98.2 m^2/s^2 ave: 32.7 10^-3 m/s^2 rel: 0.90 Storm rel vorticity (0-3000m) horiz: 4.7 stream: 4.2 10^-3/s Energy-Hel index: 0.01 Bulk Rich Number: 0.15 Bulk Shear: 78.39 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 ------------------------------------------------------------------------------- 500 169 4 58 19| 5.4 0.0 5.4| 24.9 0.0 24.9 49.9 0.93| 5.4 5.0 1000 172 6 65 18| 4.9 0.0 4.9| 42.8 0.0 42.8 42.8 0.91| 5.0 4.5 1500 178 8 71 17| 4.7 0.0 4.7| 58.1 0.0 58.1 38.8 0.90| 4.8 4.3 2000 185 10 77 15| 4.5 0.0 4.5| 72.2 0.0 72.2 36.1 0.89| 4.8 4.3 2500 189 12 84 14| 4.5 0.0 4.5| 85.2 0.0 85.2 34.1 0.91| 4.7 4.3 3000 191 14 92 13| 4.5 0.0 4.5| 98.2 0.0 98.2 32.7 0.90| 4.7 4.2 4000 194 19 112 12| 4.4 0.0 4.4|125.4 0.0 125.4 31.3 0.86| 4.6 3.9 5000 197 23 133 12| 4.4 0.0 4.4|157.9 0.0 157.9 31.6 0.81| 4.6 3.7 6000 199 27 152 14| 4.5 0.0 4.5|199.9 0.0 199.9 33.3 0.76| 4.6 3.5 Wrote GIF file: /home/apache/climate/data/raob//U4688/skewt/U4688.skewt.20250416.00.gif