UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2026011212.upa.cvt Date: 1200Z 12 JAN 26 Searching for U4688... Searching the city database file for: U4688 ... Date:1200Z 12 JAN 26 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 171 SFC 925 738 -26.7 -26.7 100 0.0 -26.7 60 3 252.0 252.1 251.5 253.3 0.46 2 919 785 -27.3 -30.6 73 3.3 -27.6 64 5 251.9 251.9 251.0 252.8 0.33 3 850 1364 -15.5 -18.7 76 3.2 -16.2 110 25 269.9 270.1 266.5 272.8 1.03 4 845 1408 -14.9 -18.1 77 3.2 -15.6 111 25 271.0 271.2 267.4 274.1 1.09 5 785 1961 -15.7 -18.7 78 3.0 -16.3 124 27 275.9 276.1 270.6 279.1 1.11 6 700 2813 -20.3 -23.3 77 3.0 -20.8 145 29 280.0 280.1 272.6 282.5 0.84 7 625 3649 -24.1 -27.2 75 3.1 -24.5 152 40 284.9 285.0 275.0 286.9 0.66 8 576 4246 -24.5 -27.7 75 3.2 -25.0 157 48 291.1 291.3 278.3 293.3 0.68 9 525 4914 -30.9 -33.9 75 3.0 -31.2 162 57 291.3 291.3 278.0 292.6 0.41 10 500 5260 -32.5 -35.4 75 2.9 -32.8 165 62 293.4 293.5 278.9 294.6 0.38 11 481 5533 -33.7 -36.8 74 3.1 -34.0 168 62 295.2 295.3 279.7 296.3 0.34 12 426 6373 -40.9 -44.0 72 3.1 -41.1 176 62 296.4 296.5 280.0 297.1 0.18 13 400 6800 -43.5 -46.6 71 3.1 -43.6 180 62 298.5 298.5 280.9 299.0 0.14 14 309 8483 -55.7 -58.9 67 3.2 -55.8 198 60 304.3 304.3 283.2 304.4 0.04 15 300 8670 -58.1 -61.3 67 3.2 -58.2 200 60 303.4 303.5 282.8 303.6 0.03 16 263 9484 -65.9 -69.1 64 3.2 -65.9 200 63 303.7 303.7 282.9 303.7 0.01 17 250 9790 -67.7 -70.8 64 3.1 -67.7 200 64 305.4 305.4 283.6 305.5 0.01 18 215 10689 -68.0 -71.2 63 3.2 -68.0 210 71 318.5 318.5 288.2 318.5 0.01 19 200 11120 -68.1 -71.4 62 3.3 -68.1 205 54 324.9 324.9 290.3 325.0 0.01 20 193 11335 -66.1 -69.4 63 3.3 -66.1 204 52 331.4 331.4 292.1 331.5 0.02 21 150 12880 -61.9 -65.0 66 3.1 -62.0 195 40 363.4 363.5 299.4 363.6 0.04 22 123 14115 -58.5 -62.1 63 3.6 -58.6 195 45 390.9 390.9 304.0 391.2 0.07 23 103 15256 -48.1 -51.8 65 3.7 -48.5 195 49 431.1 431.2 309.1 432.7 0.31 24 100 15450 -48.5 -52.2 65 3.7 -48.8 195 50 434.0 434.1 309.4 435.6 0.31 25 91 16068 -50.1 -53.8 65 3.7 -50.4 195 56 442.7 442.8 310.3 444.2 0.28 26 70 17800 -45.3 -49.2 65 3.9 -46.0 195 71 487.5 487.7 314.3 491.1 0.62 27 66 18194 -44.1 -48.2 64 4.1 -44.9 498.4 498.6 315.1 502.7 0.73 28 58 19052 -48.7 -53.4 58 4.7 -49.4 506.7 506.9 315.6 509.5 0.46 TRP 215 10689 -71.7 -74.8 63 3.1 -71.7 210 71 312.7 312.7 286.3 312.7 0.01 WND 215 10689 -68.0 -71.2 63 3.2 -68.0 210 71 318.5 318.5 288.2 318.5 0.01 Sounding variables and indices 1000-500 mb thick: 5089.00 m Freezing level: Surface below freezing Wetbulb zero: Below ground Precipitable water: 0.16 inches Sfc-500 mean rel hum: 76.02 % Est. max temperature: -2.88 C = 26.82 F Sfc-Lift cond lev (LCL): 925.00 mb = 737.66 m = 2420.13 ft T: -26.70 C 700-500 lapse rate: 4.99 C/km ThetaE index: 0.51 C Layer 919.0- 850.0 mb Conv cond level (CCL): 925.00 mb = 737.66 m = 2420.13 ft Mean mixing ratio: 0.77 g/kg Conv temperature: -21.11 C = -6.00 F Cap Strength: 22.36 C Lifted Index: 23.17 C Risk: None Lifted Index @300 mb: 27.05 C Lifted Index @700 mb: 14.07 C Showalter Index: 17.11 C Risk: None Total Totals Index: 30.80 C Risk: None Vertical Totals Index: 17.00 C Cross Totals Index: 13.80 C K Index: -4.70 Risk: None Sweat Index: 112.00 Risk: None Energy Index: 4.62 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 72.13 J/kg Max Up Vert Vel: 12.01 m/s Conv Inhibition (B-): 36304.92 J/kg Cap Strength: 22.71 C Lift Cond Lev (LCL): 848.13 mb = 1380.54 m = 4529.28 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 188 at 32 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 ---------------------------------------------------------- 0 925 738 60 3 -2.6 -1.5 | 12 34 -7.0 -32.8 1 850 1364 110 25 -23.5 8.6 | 51 36 -27.9 -22.8 2 700 2813 145 29 -16.6 23.8 | 70 22 -21.1 -7.6 3 500 5260 165 62 -16.0 59.9 | 144 35 -20.5 28.6 4 400 6800 180 62 0.0 62.0 | 172 31 -4.4 30.7 5 300 8670 200 60 20.5 56.4 | 213 30 16.1 25.1 6 250 9790 200 64 21.9 60.1 | 211 34 17.4 28.8 7 215 10689 210 71 35.5 61.5 | 226 43 31.1 30.2 8 200 11120 205 54 22.8 48.9 | 226 25 18.4 17.6 9 150 12880 195 40 10.4 38.6 | 219 9 5.9 7.3 10 100 15450 195 50 12.9 48.3 | 207 19 8.5 17.0 11 70 17800 195 71 18.4 68.6 | 201 40 13.9 37.2 Wind Parameters Mean winds (0-6000m): 158.1 at 42.2 knts Storm direction: 188.1 at 31.6 knts Shear (0-3000m) pos: 7.2 neg: 0.0 tot: 7.2 10-3/s Storm rel Dir Shear (0-3000m): 91.0 deg Storm rel helicity (0-3000m) pos: 397.1 neg: 0.0 tot: 397.1 m^2/s^2 ave: 132.4 10^-3 m/s^2 rel: 0.86 Storm rel vorticity (0-3000m) horiz: 9.5 stream: 8.2 10^-3/s Energy-Hel index: 0.14 Bulk Rich Number: 0.41 Bulk Shear: 175.31 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 ------------------------------------------------------------------------------- 500 105 12 29 32| 18.9 0.0 18.9|181.8 0.0 181.8 363.6 0.96| 20.2 19.4 1000 110 18 40 33| 12.7 0.0 12.7|264.3 0.0 264.3 264.3 0.93| 15.3 14.2 1500 117 21 47 32| 9.1 0.0 9.1|293.0 0.0 293.0 195.3 0.88| 12.2 10.6 2000 123 23 51 30| 7.4 0.0 7.4|314.7 0.0 314.7 157.4 0.82| 10.7 8.8 2500 129 24 56 28| 7.2 0.0 7.2|353.3 0.0 353.3 141.3 0.84| 10.0 8.4 3000 134 27 62 27| 7.2 0.0 7.2|397.1 0.0 397.1 132.4 0.86| 9.5 8.2 4000 144 32 77 24| 7.1 0.0 7.1|495.0 0.0 495.0 123.8 0.87| 9.1 7.9 5000 152 38 95 22| 6.5 0.0 6.5|597.7 0.0 597.7 119.5 0.87| 8.6 7.5 6000 158 42 111 22| 5.4 0.0 5.4|685.0 0.0 685.0 114.2 0.88| 8.1 7.1 Wrote GIF file: /home/apache/climate/data/raob//U4688/skewt/U4688.skewt.20260112.12.gif