UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025120612.upa.cvt Date: 1200Z 6 DEC 25 Searching for U4688... Searching the city database file for: U4688 ... Date:1200Z 6 DEC 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 16 1 925 595 SFC 907 741 -21.9 -24.5 79 2.6 -22.2 110 1 258.4 258.5 257.1 260.0 0.58 3 856 1176 -13.3 -16.0 80 2.7 -13.9 159 22 271.7 271.9 268.2 275.3 1.28 4 850 1230 -13.5 -16.2 80 2.7 -14.1 165 25 272.0 272.2 268.4 275.6 1.27 5 824 1466 -14.5 -17.1 81 2.6 -15.1 169 23 273.4 273.6 269.2 276.8 1.21 6 700 2680 -23.9 -26.6 78 2.7 -24.3 190 13 276.0 276.1 269.8 277.9 0.62 7 670 2997 -26.7 -29.4 78 2.7 -27.0 189 15 276.4 276.4 269.8 277.9 0.50 8 566 4201 -30.9 -33.8 76 2.9 -31.2 187 23 285.1 285.1 274.7 286.3 0.39 9 500 5070 -35.7 -38.6 75 2.9 -35.9 185 29 289.5 289.6 276.9 290.4 0.27 10 462 5617 -38.7 -41.6 74 2.9 -38.9 164 23 292.4 292.4 278.2 293.1 0.22 11 439 5968 -38.7 -41.7 73 3.0 -38.9 150 19 296.7 296.7 280.2 297.5 0.22 12 400 6600 -44.5 -47.5 72 3.0 -44.6 125 11 297.2 297.2 280.3 297.6 0.13 13 385 6852 -46.9 -49.6 74 2.7 -47.0 148 10 297.3 297.3 280.3 297.6 0.11 14 345 7568 -50.1 -53.1 70 3.0 -50.2 215 8 302.4 302.4 282.5 302.7 0.08 15 300 8460 -56.7 -59.6 70 2.9 -56.8 300 5 305.4 305.4 283.6 305.6 0.04 16 298 8503 -57.1 -59.9 70 2.8 -57.2 294 5 305.4 305.4 283.6 305.6 0.04 17 262 9329 -58.7 -61.8 67 3.1 -58.7 175 9 314.6 314.6 287.0 314.7 0.04 18 250 9630 -55.7 -58.9 67 3.2 -55.8 165 13 323.3 323.3 289.8 323.5 0.05 19 239 9917 -54.1 -57.4 67 3.3 -54.2 166 14 329.9 329.9 291.7 330.1 0.07 20 230 10161 -55.5 -58.7 67 3.2 -55.6 167 15 331.4 331.4 292.2 331.6 0.06 21 211 10714 -51.9 -55.0 69 3.1 -52.0 169 18 345.3 345.3 295.7 345.7 0.10 22 200 11060 -51.3 -54.5 69 3.2 -51.4 170 19 351.5 351.6 297.1 352.0 0.12 23 187 11492 -53.1 -56.4 67 3.3 -53.2 174 20 355.4 355.5 297.9 355.9 0.10 24 159 12540 -49.1 -52.6 67 3.5 -49.3 182 24 379.1 379.1 302.2 379.9 0.18 25 150 12920 -49.9 -53.3 67 3.4 -50.1 185 25 384.1 384.1 303.0 384.9 0.18 26 100 15570 -51.1 -54.5 67 3.4 -51.4 190 29 429.0 429.1 308.9 430.2 0.23 27 70 17880 -52.9 -56.4 66 3.5 -53.2 190 35 471.2 471.3 312.8 472.7 0.26 28 57 19205 -54.5 -58.1 64 3.6 -54.8 196 37 496.1 496.2 314.8 497.7 0.26 29 50 20050 -52.9 -56.5 65 3.6 -53.4 200 38 518.8 518.9 316.4 521.1 0.37 30 49 20180 -52.7 -56.3 65 3.6 -53.2 200 39 522.3 522.4 316.6 524.7 0.38 31 34 22504 -58.1 -61.7 63 3.6 -58.5 200 58 565.6 565.7 319.0 567.6 0.28 32 32 22888 -54.9 -58.6 63 3.7 -55.5 200 61 584.1 584.2 320.0 587.3 0.44 33 30 23300 -54.9 -58.6 63 3.7 -55.5 200 64 595.0 595.1 320.5 598.4 0.47 34 27 23972 -58.5 -62.2 62 3.7 -58.9 201 72 603.1 603.2 320.9 605.5 0.33 35 24 24723 -54.3 -58.1 63 3.8 -55.1 203 81 635.9 636.2 322.3 640.8 0.62 36 21 25584 -53.9 -57.7 63 3.8 -54.8 204 91 661.9 662.2 323.3 668.0 0.75 37 20 25900 -51.5 -55.0 66 3.5 -52.5 205 95 678.5 679.0 324.0 687.6 1.10 38 17 26946 -55.3 -59.0 63 3.7 -56.2 698.6 699.0 324.6 705.4 0.79 39 13 28668 -52.8 -56.5 64 3.7 -54.1 215 124 762.9 763.5 326.6 776.0 1.40 40 12 29185 -52.1 -55.8 64 3.7 -53.5 783.1 783.9 327.2 799.1 1.66 TRP 262 9329 -58.7 -61.8 67 3.1 -58.7 175 9 314.6 314.6 287.0 314.7 0.04 WND 13 28668 -52.8 -56.5 64 3.7 -54.1 215 124 762.9 763.5 326.6 776.0 1.40 Sounding variables and indices 1000-500 mb thick: 5054.00 m Freezing level: Surface below freezing Wetbulb zero: Below ground Precipitable water: 0.15 inches Sfc-500 mean rel hum: 77.76 % Est. max temperature: -5.92 C = 21.34 F Sfc-Lift cond lev (LCL): 868.73 mb = 1065.05 m = 3494.23 ft T: -15.49 C 700-500 lapse rate: 4.94 C/km Conv cond level (CCL): 907.00 mb = 740.50 m = 2429.44 ft Mean mixing ratio: 1.08 g/kg Conv temperature: -17.40 C = 0.67 F Cap Strength: 11.50 C Lifted Index: 14.55 C Risk: None Lifted Index @300 mb: 23.67 C Lifted Index @700 mb: 4.97 C Showalter Index: 11.68 C Risk: None Total Totals Index: 41.70 C Risk: None Vertical Totals Index: 22.20 C Cross Totals Index: 19.50 C K Index: 3.30 Risk: None Sweat Index: 79.00 Risk: None Energy Index: 3.03 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 64.95 J/kg Max Up Vert Vel: 11.40 m/s Conv Inhibition (B-): 67224.13 J/kg Cap Strength: 14.30 C Lift Cond Lev (LCL): 825.41 mb = 1453.03 m = 4767.09 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 207 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 ---------------------------------------------------------- 0 907 741 110 1 -0.9 0.3 | 31 15 -7.6 -12.6 1 850 1230 165 25 -6.5 24.1 | 130 17 -13.2 11.2 2 700 2680 190 13 2.3 12.8 | 88 4 -4.4 -0.1 3 500 5070 185 29 2.5 28.9 | 165 16 -4.2 16.0 4 400 6600 125 11 -9.0 6.3 | 67 17 -15.7 -6.6 5 300 8460 300 5 4.3 -2.5 | 9 16 -2.4 -15.4 6 262 9329 175 9 -0.8 9.0 | 62 8 -7.5 -4.0 7 250 9630 165 13 -3.4 12.6 | 88 10 -10.1 -0.4 8 200 11060 170 19 -3.3 18.7 | 120 12 -10.0 5.8 9 150 12920 185 25 2.2 24.9 | 159 13 -4.5 12.0 10 100 15570 190 29 5.0 28.6 | 174 16 -1.7 15.6 11 70 17880 190 35 6.1 34.5 | 178 22 -0.6 21.5 12 50 20050 200 38 13.0 35.7 | 195 24 6.3 22.8 13 30 23300 200 64 21.9 60.1 | 198 50 15.2 47.2 14 20 25900 205 95 40.1 86.1 | 205 80 33.5 73.2 Wind Parameters Mean winds (0-6000m): 177.3 at 19.4 knts Storm direction: 207.3 at 14.6 knts Shear (0-3000m) pos: 2.3 neg: 1.2 tot: 3.4 10-3/s Storm rel Dir Shear (0-3000m): 119.2 deg Storm rel helicity (0-3000m) pos: 122.5 neg: -7.5 tot: 115.0 m^2/s^2 ave: 38.3 10^-3 m/s^2 rel: 0.59 Storm rel vorticity (0-3000m) horiz: 8.4 stream: 5.0 10^-3/s Energy-Hel index: 0.05 Bulk Rich Number: 9.13 Bulk Shear: 7.11 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 ------------------------------------------------------------------------------- 500 163 13 89 11| 25.1 0.0 25.1|113.8 0.0 113.8 227.6 1.00| 28.5 28.4 1000 167 18 113 12| 10.5 0.0 10.5|114.7 -0.3 114.4 114.4 0.84| 17.0 14.2 1500 170 18 117 11| 5.6 0.0 5.6|114.7 -3.6 111.2 74.1 0.69| 13.1 9.0 2000 172 17 115 10| 3.4 0.0 3.4|114.8 -7.5 107.3 53.6 0.56| 10.8 6.1 2500 175 17 116 9| 2.7 0.7 3.4|118.7 -7.5 111.2 44.5 0.59| 9.3 5.5 3000 177 17 119 9| 2.3 1.2 3.4|122.5 -7.5 115.0 38.3 0.59| 8.4 5.0 4000 180 19 131 9| 1.7 1.7 3.4|129.3 -7.5 121.8 30.4 0.56| 7.1 4.0 5000 180 20 137 10| 1.4 1.2 2.6|131.1 -65.5 65.6 13.1 0.25| 7.3 1.8 6000 177 19 130 10| 1.1 0.9 2.1|132.9-124.6 8.4 1.4 0.05| 7.5 0.4 Wrote GIF file: /home/apache/climate/data/raob//U4688/skewt/U4688.skewt.20251206.12.gif