UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025120900.upa.cvt Date: 0000Z 9 DEC 25 Searching for U4688... Searching the city database file for: U4688 ... Date:0000Z 9 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 207 SFC 927 740 -36.1 -38.7 77 2.6 -36.2 160 1 242.2 242.3 241.9 242.6 0.14 2 925 755 -36.5 -40.0 70 3.5 -36.6 155 1 242.0 242.0 241.6 242.3 0.13 3 906 897 -35.3 -39.1 68 3.8 -35.5 124 2 244.7 244.7 244.1 245.1 0.14 4 850 1344 -26.7 -30.3 72 3.6 -27.1 30 5 258.2 258.2 256.5 259.2 0.36 5 811 1690 -20.1 -23.8 72 3.7 -20.7 65 7 268.7 268.8 265.1 270.7 0.69 6 788 1905 -18.7 -22.2 74 3.5 -19.3 87 8 272.4 272.5 267.8 274.8 0.82 7 700 2784 -24.3 -27.4 75 3.1 -24.7 175 13 275.6 275.7 269.5 277.3 0.58 8 582 4101 -32.3 -35.2 75 2.9 -32.6 180 22 281.2 281.2 272.4 282.2 0.33 9 500 5150 -40.3 -43.4 72 3.1 -40.5 185 29 283.9 283.9 273.7 284.4 0.16 10 400 6630 -52.3 -55.3 70 3.0 -52.4 180 35 287.0 287.0 275.2 287.2 0.05 11 386 6861 -54.3 -57.6 67 3.3 -54.4 181 36 287.3 287.3 275.3 287.5 0.04 12 300 8460 -60.9 -64.2 65 3.3 -60.9 185 42 299.5 299.5 281.1 299.6 0.02 13 288 8712 -61.9 -65.0 66 3.1 -61.9 185 40 301.6 301.6 282.0 301.7 0.02 14 250 9590 -59.1 -62.7 63 3.6 -59.2 185 29 318.2 318.2 288.2 318.3 0.03 15 200 11020 -53.1 -56.8 64 3.7 -53.2 190 33 348.7 348.7 296.4 349.1 0.09 16 179 11735 -50.9 -54.6 65 3.7 -51.1 190 32 363.5 363.5 299.5 364.1 0.13 17 150 12880 -51.3 -54.9 65 3.6 -51.5 190 31 381.7 381.7 302.6 382.4 0.15 18 100 15510 -51.5 -55.1 65 3.6 -51.8 200 36 428.2 428.3 308.7 429.3 0.22 19 70 17820 -53.7 -57.6 62 3.9 -54.0 200 38 469.5 469.6 312.7 470.8 0.23 20 60 18808 -54.7 -58.5 63 3.8 -55.1 205 46 488.4 488.5 314.2 489.9 0.24 21 50 19980 -52.5 -56.3 63 3.8 -53.0 210 56 519.8 519.9 316.4 522.1 0.37 22 44 20808 -50.7 -54.4 65 3.7 -51.3 209 63 543.5 543.7 317.9 547.0 0.54 23 43 20956 -53.3 -57.1 63 3.8 -53.8 209 64 540.7 540.8 317.7 543.3 0.39 24 38 21758 -49.3 -53.2 64 3.9 -50.1 207 71 570.3 570.6 319.4 575.3 0.72 25 32 22881 -49.9 -53.7 64 3.8 -50.8 206 80 597.5 597.8 320.7 603.3 0.80 26 30 23300 -52.7 -56.4 64 3.7 -53.4 205 83 601.0 601.2 320.9 605.5 0.62 27 28 23750 -50.1 -53.9 64 3.8 -51.0 206 86 620.2 620.5 321.7 626.9 0.89 28 22 25335 -48.9 -52.7 64 3.8 -50.1 209 97 668.0 668.6 323.7 678.7 1.31 29 20 25970 -44.1 -48.0 65 3.9 -45.9 210 101 701.2 702.3 325.1 722.1 2.49 30 17 27052 -47.7 -51.2 66 3.6 -49.1 205 104 723.2 724.0 325.7 740.8 2.02 31 14 28322 -51.9 -55.1 68 3.2 -53.0 750.1 750.8 326.3 764.3 1.55 32 12 29327 -49.3 -53.0 65 3.7 -51.0 793.1 794.2 327.6 815.6 2.33 TRP 288 8712 -61.9 -65.0 66 3.1 -61.9 185 40 301.6 301.6 282.0 301.7 0.02 WND 17 27052 -47.7 -51.2 66 3.6 -49.1 205 104 723.2 724.0 325.7 740.8 2.02 Sounding variables and indices 1000-500 mb thick: 4943.00 m Freezing level: Surface below freezing Wetbulb zero: Below ground Precipitable water: 0.11 inches Sfc-500 mean rel hum: 73.66 % Est. max temperature: -6.22 C = 20.80 F Sfc-Lift cond lev (LCL): 886.38 mb = 1050.54 m = 3446.60 ft T: -32.35 C 700-500 lapse rate: 6.76 C/km ThetaE index: 0.31 C Layer 925.0- 906.0 mb Conv cond level (CCL): 927.00 mb = 739.84 m = 2427.26 ft Mean mixing ratio: 0.28 g/kg Conv temperature: -32.25 C = -26.05 F Cap Strength: 24.28 C Lifted Index: 25.48 C Risk: None Lifted Index @300 mb: 33.01 C Lifted Index @700 mb: 20.74 C Showalter Index: 20.32 C Risk: None Total Totals Index: 23.60 C Risk: None Vertical Totals Index: 13.60 C Cross Totals Index: 10.00 C K Index: -19.80 Risk: None Sweat Index: 39.00 Risk: None Energy Index: 5.50 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 70.05 J/kg Max Up Vert Vel: 11.84 m/s Conv Inhibition (B-): 68130.31 J/kg Cap Strength: 25.48 C Lift Cond Lev (LCL): 840.51 mb = 1426.78 m = 4680.97 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 210 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 ---------------------------------------------------------- 0 927 740 160 1 -0.3 0.9 | 33 14 -7.7 -11.8 1 925 755 155 1 -0.4 0.9 | 33 14 -7.8 -11.8 2 850 1344 30 5 -2.5 -4.3 | 30 20 -9.9 -17.0 3 700 2784 175 13 -1.1 13.0 | 92 9 -8.5 0.3 4 500 5150 185 29 2.5 28.9 | 163 17 -4.8 16.2 5 400 6630 180 35 0.0 35.0 | 162 23 -7.4 22.3 6 300 8460 185 42 3.7 41.8 | 173 29 -3.7 29.2 7 288 8712 185 40 3.5 39.8 | 172 27 -3.9 27.2 8 250 9590 185 29 2.5 28.9 | 163 17 -4.8 16.2 9 200 11020 190 33 5.7 32.5 | 175 20 -1.6 19.8 10 150 12880 190 31 5.4 30.5 | 174 18 -2.0 17.8 11 100 15510 200 36 12.3 33.8 | 193 22 4.9 21.1 12 70 17820 200 38 13.0 35.7 | 194 24 5.6 23.0 13 50 19980 210 56 28.0 48.5 | 210 41 20.6 35.8 14 30 23300 205 83 35.1 75.2 | 204 68 27.7 62.5 15 20 25970 210 101 50.5 87.5 | 210 86 43.1 74.8 Wind Parameters Mean winds (0-6000m): 180.2 at 19.6 knts Storm direction: 210.2 at 14.7 knts Shear (0-3000m) pos: 3.8 neg: 0.8 tot: 4.6 10-3/s Storm rel Dir Shear (0-3000m): 98.1 deg Storm rel helicity (0-3000m) pos: 107.4 neg: -14.6 tot: 92.8 m^2/s^2 ave: 30.9 10^-3 m/s^2 rel: 0.61 Storm rel vorticity (0-3000m) horiz: 6.6 stream: 4.0 10^-3/s Energy-Hel index: 0.04 Bulk Rich Number: 1.23 Bulk Shear: 56.96 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 66 3 35 17| 0.0 4.8 4.8| 6.2 -6.5 -0.4 -0.8 0.03| 6.1 0.2 1000 49 4 34 19| 1.7 2.4 4.2| 30.5 -14.6 15.9 15.9 0.25| 6.4 1.6 1500 82 6 44 19| 3.2 1.6 4.8| 68.6 -14.6 54.0 36.0 0.51| 7.0 3.6 2000 139 7 58 14| 3.9 1.2 5.1| 91.4 -14.6 76.9 38.4 0.54| 7.9 4.2 2500 161 8 65 11| 3.9 1.0 4.8| 99.5 -14.6 84.9 34.0 0.57| 7.2 4.1 3000 168 10 72 10| 3.8 0.8 4.6|107.4 -14.6 92.8 30.9 0.61| 6.6 4.0 4000 176 13 94 8| 3.8 0.6 4.4|124.6 -14.6 110.1 27.5 0.63| 5.8 3.7 5000 180 17 117 8| 3.3 0.4 3.8|132.5 -15.2 117.3 23.5 0.60| 5.2 3.1 6000 180 20 133 10| 2.8 0.5 3.3|134.3 -17.7 116.6 19.4 0.55| 4.7 2.6 Wrote GIF file: /home/apache/climate/data/raob//U4688/skewt/U4688.skewt.20251209.00.gif