UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025121812.upa.cvt Date: 1200Z 18 DEC 25 Searching for VVNB... Searching the city database file for: VVNB ... Date:1200Z 18 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 1016 6 23.4 14.4 57 9.0 17.6 75 1 295.2 297.0 290.1 324.5 10.20 1 1000 143 22.8 13.8 57 9.0 17.0 160 5 296.0 297.7 290.2 324.7 9.96 2 925 816 16.8 10.8 68 6.0 13.1 155 7 296.5 298.1 289.4 322.1 8.82 3 882 1220 13.8 7.8 67 6.0 10.3 189 8 297.4 298.8 288.6 319.5 7.54 4 850 1531 12.8 7.8 72 5.0 9.9 215 9 299.6 301.0 289.6 322.6 7.83 5 834 1690 11.6 7.3 75 4.3 9.1 221 9 299.9 301.3 289.6 322.7 7.71 6 781 2237 8.8 3.8 71 5.0 6.1 243 10 302.6 303.8 289.3 321.9 6.45 7 752 2550 8.0 -1.0 53 9.0 3.5 256 10 305.0 305.9 288.6 319.5 4.73 8 727 2829 6.2 -4.8 45 11.0 1.1 267 11 306.0 306.7 287.9 317.4 3.68 9 700 3138 3.6 -3.4 60 7.0 0.3 280 11 306.5 307.3 288.6 319.6 4.25 10 672 3468 0.6 -3.1 76 3.7 -1.2 276 14 306.7 307.6 288.9 320.7 4.53 11 645 3797 -1.1 -7.1 64 6.0 -3.7 271 16 308.4 309.1 288.5 319.3 3.48 12 630 3985 -2.3 -15.3 36 13.0 -6.8 269 18 309.1 309.5 287.1 315.1 1.85 13 620 4113 -1.5 -21.5 20 20.0 -7.7 267 19 311.4 311.7 287.1 315.2 1.11 14 580 4641 -5.3 -8.6 78 3.3 -6.7 260 23 313.0 313.7 290.0 324.0 3.44 15 531 5328 -11.1 -11.1 100 0.0 -11.1 251 29 314.1 314.6 290.0 324.0 3.09 16 500 5790 -12.7 -20.7 51 8.0 -15.0 245 33 317.6 317.8 289.5 322.5 1.47 17 481 6082 -15.5 -21.5 60 6.0 -17.1 245 38 317.6 317.9 289.5 322.5 1.43 18 474 6192 -15.5 -43.5 7 28.0 -19.6 245 40 319.0 319.0 288.6 319.6 0.17 19 468 6288 -15.5 -60.5 1 45.0 -19.9 245 42 320.1 320.1 288.8 320.2 0.02 20 459 6433 -16.3 -30.3 29 14.0 -19.3 245 44 320.9 321.1 289.8 323.3 0.67 21 454 6515 -16.7 -32.7 24 16.0 -19.8 245 46 321.4 321.5 289.8 323.4 0.54 22 447 6632 -14.1 -59.1 1 45.0 -19.1 245 48 326.1 326.1 290.6 326.3 0.03 23 405 7368 -20.1 -60.1 2 40.0 -23.7 245 60 327.7 327.7 291.1 327.8 0.03 24 400 7460 -20.1 -59.1 2 39.0 -23.8 245 62 328.9 328.9 291.5 329.0 0.03 25 361 8216 -23.3 -62.3 2 39.0 -26.5 247 69 334.4 334.4 292.9 334.5 0.02 26 340 8655 -24.1 -63.1 1 39.0 -27.2 248 74 339.1 339.1 294.1 339.2 0.02 27 300 9560 -28.9 -65.9 2 37.0 -31.3 250 83 344.6 344.7 295.4 344.7 0.02 28 298 9608 -29.3 -66.3 2 37.0 -31.7 250 83 344.7 344.7 295.5 344.8 0.02 29 250 10840 -39.1 -69.1 3 30.0 -40.3 250 87 347.9 347.9 296.2 348.0 0.01 30 201 12288 -51.6 -73.8 5 22.2 -52.0 260 91 350.5 350.5 296.8 350.6 0.01 31 200 12320 -51.9 -73.9 5 22.0 -52.3 255 91 350.6 350.6 296.8 350.6 0.01 32 180 12996 -57.3 -75.3 8 18.0 -57.5 257 87 352.5 352.5 297.2 352.5 0.01 33 159 13772 -62.9 -75.9 16 13.0 -63.0 259 83 355.7 355.7 297.8 355.8 0.01 34 150 14130 -65.1 -78.1 15 13.0 -65.2 260 81 357.9 357.9 298.3 358.0 0.01 35 140 14548 -67.7 -80.7 14 13.0 -67.8 266 76 360.5 360.5 298.8 360.5 0.00 36 107 16137 -75.5 -89.5 9 14.0 -75.5 289 57 374.5 374.5 301.4 374.5 0.00 37 100 16530 -74.7 -89.7 8 15.0 -74.7 295 52 383.4 383.4 302.8 383.4 0.00 TRP WND 201 12288 -51.6 -73.8 5 22.2 -52.0 260 91 350.5 350.5 296.8 350.6 0.01 Sounding variables and indices 1000-500 mb thick: 5647.00 m Freezing level: 662.47 mb = 3584.43 m = 11759.79 ft Wetbulb zero: 694.94 mb = 3196.71 m = 10487.76 ft Precipitable water: 1.19 inches Sfc-500 mean rel hum: 65.74 % Est. max temperature: 26.70 C = 80.05 F Sfc-Lift cond lev (LCL): 890.00 mb = 1143.21 m = 3750.66 ft T: 14.37 C 700-500 lapse rate: 6.15 C/km ThetaE index: 5.25 C Layer 781.0- 700.0 mb Conv cond level (CCL): 793.84 mb = 2101.48 m = 6894.54 ft Mean mixing ratio: 9.43 g/kg Conv temperature: 30.16 C = 86.29 F Cap Strength: 3.00 C Lifted Index: 1.81 C Risk: Showers probable Lifted Index @300 mb: 15.67 C Lifted Index @700 mb: 1.76 C Showalter Index: 2.28 C Risk: Showers probable Total Totals Index: 46.00 C Risk: Scattered moderate thunderstorms Vertical Totals Index: 25.50 C Cross Totals Index: 20.50 C K Index: 26.30 Risk: 40-60 % chance of thunderstorms Sweat Index: 144.60 Risk: None Energy Index: 0.00 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 2.62 J/kg Max Up Vert Vel: 2.29 m/s Conv Inhibition (B-): 7583.63 J/kg Cap Strength: 3.02 C Lift Cond Lev (LCL): 862.65 mb = 1406.57 m = 4614.68 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 276 at 12 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 1016 6 75 1 -1.0 -0.3 | 95 13 -12.6 1.0 1 1000 143 160 5 -1.7 4.7 | 114 15 -13.3 6.0 2 925 816 155 7 -3.0 6.3 | 118 16 -14.6 7.6 3 850 1531 215 9 5.2 7.4 | 143 11 -6.4 8.7 4 700 3138 280 11 10.8 -1.9 | 52 1 -0.8 -0.6 5 500 5790 245 33 29.9 13.9 | 230 24 18.3 15.2 6 400 7460 245 62 56.2 26.2 | 238 52 44.6 27.5 7 300 9560 250 83 78.0 28.4 | 246 73 66.4 29.7 8 250 10840 250 87 81.8 29.8 | 246 77 70.1 31.1 9 201 12288 260 91 89.6 15.8 | 258 80 78.0 17.1 10 200 12320 255 91 87.9 23.6 | 252 80 76.3 24.9 11 150 14130 260 81 79.8 14.1 | 257 70 68.2 15.4 12 100 16530 295 52 47.1 -22.0 | 300 41 35.5 -20.7 Wind Parameters Mean winds (0-6000m): 246.4 at 15.6 knts Storm direction: 276.4 at 11.7 knts Shear (0-3000m) pos: 2.0 neg: 0.0 tot: 2.0 10-3/s Storm rel Dir Shear (0-3000m): 22.8 deg Storm rel helicity (0-3000m) pos: 49.7 neg: -0.5 tot: 49.2 m^2/s^2 ave: 16.4 10^-3 m/s^2 rel: 0.48 Storm rel vorticity (0-3000m) horiz: 4.6 stream: 2.2 10^-3/s Energy-Hel index: 0.00 Bulk Rich Number: 0.08 Bulk Shear: 34.95 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 ------------------------------------------------------------------------------- 500 157 5 113 15| 6.2 0.0 6.2| 20.2 0.0 20.2 40.4 0.81| 6.9 5.5 1000 158 6 116 15| 4.0 0.0 4.0| 29.6 0.0 29.6 29.6 0.79| 5.0 3.9 1500 173 7 122 15| 3.3 0.0 3.3| 45.0 0.0 45.0 30.0 0.75| 5.4 4.1 2000 190 7 129 13| 2.7 0.0 2.7| 48.6 0.0 48.6 24.3 0.69| 5.0 3.4 2500 205 8 135 12| 2.3 0.0 2.3| 49.7 0.0 49.7 19.9 0.61| 4.7 2.9 3000 219 8 140 10| 2.0 0.0 2.0| 49.7 -0.5 49.2 16.4 0.48| 4.6 2.2 4000 242 10 153 7| 1.9 0.6 2.5| 49.7 -2.3 47.4 11.8 0.25| 4.6 1.1 5000 249 12 179 6| 1.5 1.5 3.0| 49.7 -11.3 38.3 7.7 0.13| 4.7 0.6 6000 246 16 199 8| 1.3 2.2 3.5| 55.3 -29.7 25.6 4.3 0.06| 4.9 0.3 Wrote GIF file: /home/apache/climate/data/raob//VVNB/skewt/VVNB.skewt.20251218.12.gif