UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025121612.upa.cvt Date: 1200Z 16 DEC 25 Searching for VVNB... Searching the city database file for: VVNB ... Date:1200Z 16 DEC 25 Station: VVNB WMO ident: 48820 Latitude: 21.02 Longitude: 105.80 Elevation: 6.00 ------------------------------------------------------------------------------- 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 ------------------------------------------------------------------------------- SFC 1018 6 21.2 16.2 73 5.0 17.9 0 0 292.9 294.9 290.4 325.4 11.45 1 1000 156 20.2 15.2 73 5.0 17.0 75 3 293.4 295.3 290.1 324.5 10.92 2 943 660 15.4 14.0 91 1.4 14.5 147 6 293.4 295.3 290.0 324.0 10.71 3 925 824 15.2 14.1 93 1.1 14.5 170 7 294.9 296.8 290.7 326.4 11.00 4 867 1372 12.6 12.6 100 0.0 12.6 197 15 297.7 299.6 291.3 328.5 10.63 5 850 1539 12.4 12.2 99 0.2 12.3 205 17 299.1 301.1 291.7 330.0 10.56 6 813 1911 10.0 9.7 98 0.3 9.8 216 17 300.4 302.1 291.1 327.9 9.33 7 799 2056 11.4 3.4 58 8.0 7.0 221 18 303.4 304.5 289.3 321.9 6.12 8 701 3137 4.4 -10.6 33 15.0 -1.7 255 19 307.2 307.7 287.1 314.9 2.43 9 700 3149 4.4 -11.6 30 16.0 -2.0 255 19 307.4 307.8 286.9 314.5 2.25 10 689 3278 5.8 -23.2 10 29.0 -3.3 255 20 310.3 310.5 286.5 313.2 0.86 11 665 3568 5.4 -30.6 5 36.0 -4.4 257 21 313.0 313.1 286.9 314.6 0.45 12 586 4588 -0.9 -32.9 7 32.0 -8.7 260 27 317.2 317.3 288.3 318.7 0.41 13 564 4893 -0.9 -36.9 5 36.0 -9.2 261 29 320.7 320.8 289.3 321.8 0.29 14 500 5840 -8.3 -33.3 11 25.0 -13.9 265 35 322.9 323.0 290.2 324.6 0.46 15 443 6766 -16.9 -37.9 14 21.0 -20.5 268 42 323.4 323.5 290.2 324.7 0.33 16 439 6835 -16.3 -48.3 4 32.0 -20.5 268 43 325.0 325.1 290.4 325.5 0.11 17 400 7530 -20.9 -46.9 8 26.0 -24.1 270 48 327.8 327.9 291.3 328.4 0.14 18 333 8862 -28.3 -57.3 4 29.0 -30.6 270 63 335.3 335.3 293.2 335.5 0.05 19 323 9081 -26.7 -63.7 2 37.0 -29.4 270 65 340.5 340.5 294.4 340.6 0.02 20 305 9492 -28.7 -59.7 3 31.0 -31.1 270 70 343.3 343.3 295.1 343.5 0.04 21 300 9610 -29.7 -60.7 3 31.0 -31.9 270 71 343.5 343.5 295.2 343.7 0.04 22 250 10880 -39.7 -68.7 3 29.0 -40.8 255 77 347.0 347.0 296.0 347.1 0.01 23 219 11768 -47.7 -70.7 5 23.0 -48.3 255 83 348.1 348.1 296.2 348.1 0.01 24 200 12360 -51.9 -74.9 5 23.0 -52.3 255 87 350.6 350.6 296.8 350.6 0.01 25 174 13247 -59.0 -79.2 6 20.1 -59.2 250 89 353.1 353.1 297.3 353.1 0.00 26 157 13883 -64.3 -82.3 7 18.0 -64.4 250 85 354.7 354.7 297.6 354.7 0.00 27 150 14160 -66.9 -82.9 9 16.0 -67.0 250 83 354.8 354.8 297.7 354.9 0.00 28 134 14834 -72.3 -80.3 29 8.0 -72.3 257 75 356.9 356.9 298.1 356.9 0.00 29 107 16136 -79.5 -85.5 36 6.0 -79.5 270 58 367.0 367.0 300.0 367.0 0.00 30 100 16520 -79.3 -87.3 26 8.0 -79.3 260 66 374.5 374.5 301.4 374.5 0.00 TRP 107 16136 -79.5 -85.5 36 6.0 -79.5 270 58 367.0 367.0 300.0 367.0 0.00 WND 174 13247 -59.0 -79.2 6 20.1 -59.2 250 89 353.1 353.1 297.3 353.1 0.00 Sounding variables and indices 1000-500 mb thick: 5684.00 m Freezing level: 597.29 mb = 4441.84 m = 14572.78 ft Wetbulb zero: 720.25 mb = 2913.57 m = 9558.84 ft Precipitable water: 1.13 inches Sfc-500 mean rel hum: 42.69 % Est. max temperature: 25.98 C = 78.76 F Sfc-Lift cond lev (LCL): 945.72 mb = 635.25 m = 2084.14 ft T: 15.64 C 700-500 lapse rate: 4.72 C/km ThetaE index: 16.81 C Layer 813.0- 665.0 mb Conv cond level (CCL): 880.14 mb = 1244.86 m = 4084.14 ft Mean mixing ratio: 10.90 g/kg Conv temperature: 25.38 C = 77.68 F Cap Strength: 6.81 C Lifted Index: 5.57 C Risk: None Lifted Index @300 mb: 13.99 C Lifted Index @700 mb: 2.04 C Showalter Index: 2.93 C Risk: Showers probable Total Totals Index: 41.20 C Risk: None Vertical Totals Index: 20.70 C Cross Totals Index: 20.50 C K Index: 16.90 Risk: < 20 % chance of thunderstorms Sweat Index: 348.65 Risk: Showers and thunderstorms possible Energy Index: -0.99 Risk: Scattered severe thunderstorms Parcel Indices Parcel: using 100 mb layer CAPE (B+): 6.03 J/kg Max Up Vert Vel: 3.47 m/s Conv Inhibition (B-): 6918.65 J/kg Cap Strength: 6.70 C Lift Cond Lev (LCL): 925.16 mb = 822.56 m = 2698.65 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 280 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 1018 6 0 0 -0.0 -0.0 | 100 15 -14.9 2.5 1 1000 156 75 3 -2.9 -0.8 | 96 18 -17.8 1.7 2 925 824 170 7 -1.2 6.9 | 120 19 -16.1 9.4 3 850 1539 205 17 7.2 15.4 | 157 20 -7.7 17.9 4 700 3149 255 19 18.4 4.9 | 205 8 3.5 7.4 5 500 5840 265 35 34.9 3.1 | 254 21 20.0 5.6 6 400 7530 270 48 48.0 -0.0 | 266 33 33.1 2.5 7 300 9610 270 71 71.0 -0.0 | 267 56 56.1 2.5 8 250 10880 255 77 74.4 19.9 | 249 64 59.5 22.4 9 200 12360 255 87 84.0 22.5 | 250 74 69.1 25.0 10 174 13247 250 89 83.6 30.4 | 244 76 68.7 32.9 11 150 14160 250 83 78.0 28.4 | 244 70 63.1 30.9 12 107 16136 270 58 58.0 -0.0 | 267 43 43.1 2.5 13 100 16520 260 66 65.0 11.5 | 254 52 50.1 14.0 Wind Parameters Mean winds (0-6000m): 249.6 at 20.1 knts Storm direction: 279.6 at 15.1 knts Shear (0-3000m) pos: 3.2 neg: 0.0 tot: 3.2 10-3/s Storm rel Dir Shear (0-3000m): 98.5 deg Storm rel helicity (0-3000m) pos: 146.6 neg: -6.1 tot: 140.5 m^2/s^2 ave: 46.8 10^-3 m/s^2 rel: 0.75 Storm rel vorticity (0-3000m) horiz: 6.7 stream: 5.1 10^-3/s Energy-Hel index: 0.00 Bulk Rich Number: 0.09 Bulk Shear: 69.74 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 ------------------------------------------------------------------------------- 500 102 3 100 18| 5.2 0.0 5.2| 19.2 -6.1 13.1 26.1 0.31| 7.7 2.4 1000 154 5 112 19| 4.9 0.0 4.9| 58.5 -6.1 52.4 52.4 0.65| 7.9 5.2 1500 181 8 125 18| 5.7 0.0 5.7|104.7 -6.1 98.7 65.8 0.78| 8.4 6.5 2000 196 10 135 17| 4.5 0.0 4.5|123.5 -6.1 117.4 58.7 0.78| 7.6 5.9 2500 206 12 143 16| 3.7 0.0 3.7|136.6 -6.1 130.5 52.2 0.77| 7.1 5.4 3000 216 13 150 15| 3.2 0.0 3.2|146.6 -6.1 140.5 46.8 0.75| 6.7 5.1 4000 231 15 164 12| 3.1 0.0 3.1|159.5 -6.1 153.4 38.3 0.76| 5.9 4.5 5000 242 17 182 11| 3.1 0.0 3.1|173.4 -6.1 167.3 33.5 0.74| 5.4 4.0 6000 250 20 203 10| 3.1 0.0 3.1|190.3 -6.1 184.2 30.7 0.72| 5.0 3.6 Wrote GIF file: /home/apache/climate/data/raob//VVNB/skewt/VVNB.skewt.20251216.12.gif