UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025120912.upa.cvt Date: 1200Z 9 DEC 25 Searching for U4688... Searching the city database file for: U4688 ... Date:1200Z 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 170 1 925 725 20 1 SFC 923 740 -32.5 -35.1 78 2.6 -32.6 20 1 246.2 246.3 245.7 246.8 0.21 3 906 869 -33.5 -37.2 69 3.7 -33.7 36 3 246.5 246.5 245.9 247.0 0.17 4 869 1160 -31.1 -34.7 71 3.6 -31.3 71 8 252.0 252.0 250.9 252.6 0.23 5 850 1316 -28.1 -31.8 71 3.7 -28.4 90 11 256.7 256.8 255.1 257.6 0.31 6 794 1817 -19.1 -22.7 73 3.6 -19.7 108 13 271.4 271.5 267.1 273.6 0.78 7 710 2650 -20.9 -24.1 75 3.2 -21.4 136 17 278.2 278.3 271.4 280.5 0.77 8 700 2755 -21.3 -24.4 76 3.1 -21.8 140 17 278.9 279.0 271.8 281.2 0.76 9 500 5150 -38.5 -41.7 72 3.2 -38.7 150 27 286.1 286.1 274.9 286.7 0.20 10 400 6640 -50.5 -53.8 68 3.3 -50.6 150 38 289.4 289.4 276.5 289.6 0.06 11 386 6873 -51.5 -54.7 68 3.2 -51.5 152 39 291.0 291.0 277.3 291.2 0.06 12 321 8044 -62.7 -66.0 64 3.3 -62.7 161 44 291.3 291.3 277.3 291.3 0.02 13 300 8460 -65.3 -68.7 63 3.4 -65.3 165 46 293.3 293.3 278.3 293.3 0.01 14 293 8605 -66.5 -69.7 64 3.2 -66.5 165 42 293.6 293.6 278.4 293.6 0.01 15 288 8710 -66.7 -69.9 64 3.2 -66.7 165 41 294.7 294.7 279.0 294.8 0.01 16 260 9341 -61.1 -64.5 64 3.4 -61.2 165 34 311.7 311.7 285.9 311.8 0.03 17 250 9590 -55.5 -59.1 64 3.6 -55.6 165 31 323.6 323.6 289.9 323.8 0.05 18 248 9641 -54.5 -58.1 64 3.6 -54.6 166 31 325.8 325.8 290.6 326.0 0.06 19 218 10455 -56.5 -59.9 65 3.4 -56.6 174 29 334.9 334.9 293.1 335.2 0.05 20 200 11000 -53.9 -57.6 64 3.7 -54.0 180 27 347.4 347.4 296.1 347.8 0.08 21 150 12860 -51.5 -55.1 65 3.6 -51.7 195 35 381.3 381.4 302.6 382.0 0.14 22 134 13593 -50.3 -54.2 63 3.9 -50.5 192 35 396.0 396.0 304.8 396.8 0.18 23 100 15490 -52.7 -56.7 62 4.0 -52.9 185 35 425.9 425.9 308.5 426.8 0.18 TRP 293 8605 -66.5 -69.7 64 3.2 -66.5 165 42 293.6 293.6 278.4 293.6 0.01 WND Sounding variables and indices 1000-500 mb thick: 4980.00 m Freezing level: Surface below freezing Wetbulb zero: Below ground Precipitable water: 0.10 inches Sfc-500 mean rel hum: 73.36 % Est. max temperature: -6.34 C = 20.60 F Sfc-Lift cond lev (LCL): 882.99 mb = 1048.65 m = 3440.42 ft T: -32.02 C 700-500 lapse rate: 7.18 C/km ThetaE index: 0.00 C Layer 923.0- -0.0 mb Conv cond level (CCL): 922.87 mb = 741.07 m = 2431.31 ft Mean mixing ratio: 0.27 g/kg Conv temperature: -32.50 C = -26.50 F Cap Strength: 23.15 C Lifted Index: 26.70 C Risk: None Lifted Index @300 mb: 28.14 C Lifted Index @700 mb: 23.15 C Showalter Index: 23.41 C Risk: None Total Totals Index: 17.10 C Risk: None Vertical Totals Index: 10.40 C Cross Totals Index: 6.70 C K Index: -24.50 Risk: None Sweat Index: 49.00 Risk: None Energy Index: 6.38 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 74.42 J/kg Max Up Vert Vel: 12.20 m/s Conv Inhibition (B-): 25765.62 J/kg Cap Strength: 26.57 C Lift Cond Lev (LCL): 827.99 mb = 1508.78 m = 4950.02 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 173 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 ---------------------------------------------------------- 0 923 740 20 1 -0.3 -0.9 | 355 17 1.6 -17.1 1 850 1316 90 11 -11.0 0.0 | 29 18 -9.0 -16.1 2 700 2755 140 17 -10.9 13.0 | 71 9 -9.0 -3.1 3 500 5150 150 27 -13.5 23.4 | 122 14 -11.5 7.3 4 400 6640 150 38 -19.0 32.9 | 135 24 -17.0 16.8 5 300 8460 165 46 -11.9 44.4 | 161 30 -9.9 28.3 6 293 8605 165 42 -10.9 40.6 | 160 26 -8.9 24.5 7 250 9590 165 31 -8.0 29.9 | 156 15 -6.1 13.8 8 200 11000 180 27 0.0 27.0 | 190 11 2.0 10.9 9 150 12860 195 35 9.1 33.8 | 212 21 11.0 17.7 10 100 15490 185 35 3.1 34.9 | 195 19 5.0 18.8 Wind Parameters Mean winds (0-6000m): 143.1 at 21.6 knts Storm direction: 173.1 at 16.2 knts Shear (0-3000m) pos: 3.7 neg: 0.0 tot: 3.7 10-3/s Storm rel Dir Shear (0-3000m): 100.9 deg Storm rel helicity (0-3000m) pos: 108.7 neg: 0.0 tot: 108.7 m^2/s^2 ave: 36.2 10^-3 m/s^2 rel: 0.85 Storm rel vorticity (0-3000m) horiz: 5.2 stream: 4.5 10^-3/s Energy-Hel index: 0.05 Bulk Rich Number: 1.50 Bulk Shear: 49.55 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 85 5 11 17| 9.5 0.0 9.5| 49.0 0.0 49.0 98.0 0.91| 10.9 9.9 1000 93 8 22 17| 6.5 0.0 6.5| 72.6 0.0 72.6 72.6 0.90| 8.3 7.5 1500 103 10 30 16| 5.2 0.0 5.2| 86.5 0.0 86.5 57.6 0.86| 7.2 6.2 2000 115 12 37 14| 4.5 0.0 4.5| 97.4 0.0 97.4 48.7 0.83| 6.7 5.6 2500 122 13 43 13| 4.0 0.0 4.0|103.1 0.0 103.1 41.2 0.84| 5.8 4.9 3000 127 14 50 12| 3.7 0.0 3.7|108.7 0.0 108.7 36.2 0.85| 5.2 4.5 4000 135 16 65 11| 3.3 0.0 3.3|120.7 0.0 120.7 30.2 0.85| 4.5 3.9 5000 140 19 80 10| 2.9 0.4 3.3|133.4 0.0 133.4 26.7 0.81| 4.3 3.4 6000 143 22 96 11| 2.7 0.6 3.4|148.7 0.0 148.7 24.8 0.74| 4.2 3.1 Wrote GIF file: /home/apache/climate/data/raob//U4688/skewt/U4688.skewt.20251209.12.gif