UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025042812.upa.cvt Date: 1200Z 28 APR 25 Searching for U4688... Searching the city database file for: U4688 ... Date:1200Z 28 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 59 1 925 686 30 3 SFC 919 738 -1.1 -5.6 71 4.5 -2.7 30 3 278.7 279.2 274.8 286.4 2.74 3 887 1021 -1.7 -8.7 59 7.0 -4.1 75 7 280.9 281.3 275.2 287.3 2.23 4 885 1039 -2.1 -10.1 54 8.0 -4.7 78 7 280.7 281.0 274.8 286.4 2.00 5 850 1358 -4.5 -9.5 68 5.0 -6.1 130 11 281.4 281.8 275.5 287.7 2.18 6 700 2847 -14.3 -17.9 74 3.6 -15.2 295 15 286.6 286.9 277.0 290.7 1.33 7 622 3733 -21.3 -25.1 71 3.8 -22.0 297 20 288.5 288.6 277.2 291.0 0.80 8 502 5291 -29.5 -32.5 75 3.0 -29.9 300 29 296.7 296.8 280.6 298.4 0.50 9 500 5320 -29.7 -32.7 75 3.0 -30.0 300 29 296.8 296.9 280.7 298.4 0.49 10 487 5508 -31.3 -34.2 76 2.9 -31.6 301 30 297.1 297.2 280.7 298.5 0.43 11 400 6880 -40.5 -44.4 66 3.9 -40.7 310 38 302.4 302.4 282.6 303.0 0.18 12 300 8780 -54.1 -58.6 58 4.5 -54.2 305 46 309.1 309.1 285.1 309.3 0.05 13 299 8802 -54.9 -59.3 58 4.4 -55.0 305 46 308.3 308.3 284.7 308.4 0.04 14 267 9523 -58.5 -63.1 55 4.6 -58.6 305 48 313.1 313.2 286.5 313.3 0.03 15 264 9594 -58.5 -63.2 55 4.7 -58.6 306 46 314.2 314.2 286.8 314.3 0.03 16 250 9940 -56.7 -61.4 55 4.7 -56.8 310 36 321.8 321.8 289.3 321.9 0.04 17 206 11178 -49.7 -54.7 56 5.0 -49.9 306 16 351.1 351.1 297.0 351.6 0.11 18 200 11370 -49.9 -55.9 49 6.0 -50.1 305 13 353.8 353.8 297.5 354.2 0.10 19 150 13240 -49.5 -59.5 30 10.0 -50.0 320 5 384.8 384.8 303.1 385.2 0.08 20 101 15845 -50.1 -65.1 15 15.0 -50.9 9 5 429.7 429.7 308.9 430.0 0.06 21 100 15910 -50.1 -65.1 15 15.0 -50.9 10 5 430.9 430.9 309.0 431.2 0.06 22 70 18240 -49.3 -67.3 10 18.0 -50.5 40 3 478.9 478.9 313.4 479.3 0.06 23 57 19584 -48.1 -68.1 8 20.0 -49.8 71 4 510.6 510.6 315.7 511.1 0.07 24 50 20440 -50.5 -70.5 8 20.0 -52.0 90 5 524.5 524.5 316.6 524.8 0.06 25 30 23780 -48.7 -70.7 6 22.0 -51.4 110 5 611.9 611.9 321.2 612.6 0.09 26 25 24970 -50.5 -72.5 6 22.0 -53.2 72 6 639.5 639.5 322.3 640.1 0.09 27 20 26430 -47.7 -70.7 5 23.0 -51.7 25 7 690.2 690.2 324.1 691.4 0.14 28 12 29815 -46.1 -71.1 4 25.0 -52.3 804.4 804.5 327.4 806.6 0.22 TRP 267 9523 -58.5 -63.1 55 4.6 -58.6 305 48 313.1 313.2 286.5 313.3 0.03 WND Sounding variables and indices 1000-500 mb thick: 5261.00 m Freezing level: Surface below freezing Wetbulb zero: Below ground Precipitable water: 0.26 inches Sfc-500 mean rel hum: 71.13 % Est. max temperature: 4.23 C = 39.61 F Sfc-Lift cond lev (LCL): 856.42 mb = 1298.40 m = 4259.80 ft T: -4.05 C 700-500 lapse rate: 6.23 C/km ThetaE index: 0.86 C Layer 885.0- 850.0 mb Conv cond level (CCL): 747.61 mb = 2342.39 m = 7684.92 ft Mean mixing ratio: 2.21 g/kg Conv temperature: 4.96 C = 40.93 F Cap Strength: 8.51 C Lifted Index: 8.60 C Risk: None Lifted Index @300 mb: 15.49 C Lifted Index @700 mb: 3.14 C Showalter Index: 8.25 C Risk: None Total Totals Index: 45.40 C Risk: Scattered moderate thunderstorms Vertical Totals Index: 25.20 C Cross Totals Index: 20.20 C K Index: 12.10 Risk: None Sweat Index: 51.00 Risk: None Energy Index: 2.18 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 11.47 J/kg Max Up Vert Vel: 4.79 m/s Conv Inhibition (B-): 70210.55 J/kg Cap Strength: 8.50 C Lift Cond Lev (LCL): 792.66 mb = 1893.61 m = 6212.56 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 330 at 16 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 ---------------------------------------------------------- 0 919 738 30 3 -1.5 -2.6 | 140 15 -9.3 11.2 1 850 1358 130 11 -8.4 7.1 | 142 26 -16.3 20.9 2 700 2847 295 15 13.6 -6.3 | 218 9 5.8 7.5 3 500 5320 300 29 25.1 -14.5 | 272 17 17.3 -0.7 4 400 6880 310 38 29.1 -24.4 | 297 24 21.3 -10.6 5 300 8780 305 46 37.7 -26.4 | 293 32 29.9 -12.6 6 267 9523 305 48 39.3 -27.5 | 294 34 31.5 -13.7 7 250 9940 310 36 27.6 -23.1 | 295 22 19.7 -9.4 8 200 11370 305 13 10.6 -7.5 | 204 7 2.8 6.3 9 150 13240 320 5 3.2 -3.8 | 155 11 -4.6 10.0 10 100 15910 10 5 -0.9 -4.9 | 136 12 -8.7 8.9 11 70 18240 40 3 -1.9 -2.3 | 140 15 -9.8 11.5 12 50 20440 90 5 -5.0 0.0 | 137 19 -12.8 13.8 13 30 23780 110 5 -4.7 1.7 | 141 20 -12.5 15.5 14 20 26430 25 7 -3.0 -6.3 | 125 13 -10.8 7.4 Wind Parameters Mean winds (0-6000m): 300.4 at 21.1 knts Storm direction: 330.4 at 15.9 knts Shear (0-3000m) pos: 3.5 neg: 0.0 tot: 3.5 10-3/s Storm rel Dir Shear (0-3000m): 104.5 deg Storm rel helicity (0-3000m) pos: 224.5 neg: -11.0 tot: 213.4 m^2/s^2 ave: 71.1 10^-3 m/s^2 rel: 0.63 Storm rel vorticity (0-3000m) horiz: 9.8 stream: 6.2 10^-3/s Energy-Hel index: 0.01 Bulk Rich Number: 0.12 Bulk Shear: 98.34 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 ------------------------------------------------------------------------------- 500 110 6 139 21| 9.7 0.0 9.7| 11.8 -11.0 0.8 1.6 -0.06| 11.2 -0.6 1000 135 9 145 24| 7.5 0.0 7.5| 90.6 -11.0 79.6 79.6 0.45| 11.9 5.4 1500 164 10 156 26| 5.6 0.0 5.6|167.6 -11.0 156.6 104.4 0.62| 12.2 7.5 2000 195 11 169 25| 4.1 0.0 4.1|208.6 -11.0 197.5 98.8 0.62| 12.6 7.8 2500 275 12 198 13| 3.6 0.0 3.6|217.3 -11.0 206.3 82.5 0.62| 11.2 6.9 3000 288 13 205 11| 3.5 0.0 3.5|224.5 -11.0 213.4 71.1 0.63| 9.8 6.2 4000 294 16 221 10| 3.3 0.0 3.3|239.3 -11.0 228.3 57.1 0.64| 8.1 5.2 5000 297 18 237 10| 3.2 0.0 3.2|259.5 -11.0 248.5 49.7 0.65| 7.1 4.6 6000 300 21 253 11| 3.2 0.0 3.2|289.8 -11.0 278.8 46.5 0.66| 6.5 4.3 Wrote GIF file: /home/apache/climate/data/raob//U4688/skewt/U4688.skewt.20250428.12.gif