UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025122700.upa.cvt Date: 0000Z 27 DEC 25 Searching for VVNB... Searching the city database file for: VVNB ... Date:0000Z 27 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 1021 6 16.0 8.0 59 8.0 11.6 80 3 287.4 288.6 283.8 306.0 6.60 1 1000 178 14.0 5.0 55 9.0 9.3 45 9 287.1 288.1 282.4 302.6 5.47 2 979 357 12.2 4.2 58 8.0 8.1 40 7 287.1 288.0 282.2 302.0 5.28 3 925 831 9.8 7.2 84 2.6 8.4 25 3 289.3 290.5 284.9 308.9 6.90 4 850 1530 6.6 6.3 98 0.3 6.4 185 3 293.1 294.3 286.5 313.4 7.06 5 837 1657 6.4 6.3 99 0.1 6.3 195 4 294.1 295.4 287.1 314.9 7.17 6 827 1756 9.8 6.1 78 3.7 7.7 202 4 298.7 300.0 288.7 319.8 7.15 7 791 2127 10.0 2.0 57 8.0 5.8 229 7 302.8 303.8 288.6 319.7 5.59 8 700 3127 0.6 0.3 98 0.3 0.4 305 13 303.1 304.2 288.8 320.0 5.59 9 695 3184 0.2 0.2 100 0.0 0.2 304 13 303.3 304.4 288.8 320.2 5.59 10 678 3382 -1.3 -1.3 100 0.0 -1.3 302 15 303.8 304.8 288.5 319.4 5.13 11 677 3394 -1.3 -2.8 90 1.5 -2.0 302 15 303.9 304.8 288.1 318.0 4.60 12 674 3429 -0.3 -15.3 31 15.0 -5.5 301 15 305.4 305.8 285.7 311.0 1.72 13 673 3441 4.0 -29.0 7 33.0 -5.0 301 15 310.4 310.5 286.1 312.2 0.52 14 655 3663 8.8 -33.2 3 42.0 -2.9 298 17 318.2 318.3 288.6 319.5 0.36 15 601 4370 5.6 -36.4 3 42.0 -5.2 289 21 322.4 322.5 289.8 323.5 0.28 16 518 5562 -4.1 -37.1 6 33.0 -11.5 274 29 324.7 324.8 290.5 325.9 0.31 17 500 5840 -5.3 -42.3 4 37.0 -12.6 270 31 326.6 326.6 290.9 327.3 0.18 18 400 7550 -17.5 -45.5 7 28.0 -21.5 290 52 332.2 332.3 292.5 332.9 0.16 19 354 8448 -24.7 -43.7 15 19.0 -27.2 288 58 334.4 334.4 293.1 335.2 0.22 20 343 8678 -23.7 -47.7 9 24.0 -26.6 287 59 338.8 338.8 294.1 339.4 0.15 21 300 9640 -30.5 -60.5 4 30.0 -32.6 285 66 342.4 342.4 294.9 342.5 0.04 22 292 9832 -31.3 -60.3 4 29.0 -33.3 284 67 343.9 343.9 295.3 344.1 0.04 23 250 10910 -40.5 -60.5 10 20.0 -41.5 275 75 345.9 345.9 295.7 346.0 0.04 24 245 11048 -41.7 -61.7 10 20.0 -42.6 273 74 346.1 346.1 295.8 346.2 0.04 25 239 11217 -40.5 -69.5 3 29.0 -41.6 270 74 350.3 350.3 296.7 350.4 0.01 26 200 12410 -50.7 -71.7 7 21.0 -51.1 250 69 352.5 352.5 297.2 352.5 0.01 27 195 12574 -52.3 -72.3 7 20.0 -52.7 249 71 352.5 352.5 297.2 352.5 0.01 28 181 13052 -56.1 -74.4 8 18.3 -56.3 245 77 353.9 353.9 297.5 353.9 0.01 29 150 14220 -65.7 -79.7 13 14.0 -65.8 260 68 356.9 356.9 298.1 356.9 0.00 30 141 14592 -68.9 -78.9 22 10.0 -68.9 262 62 357.7 357.7 298.2 357.7 0.01 31 100 16590 -79.5 -90.5 15 11.0 -79.5 270 31 374.1 374.1 301.3 374.1 0.00 TRP WND 181 13052 -56.1 -74.4 8 18.3 -56.3 245 77 353.9 353.9 297.5 353.9 0.01 Sounding variables and indices 1000-500 mb thick: 5662.00 m Freezing level: 692.73 mb = 3210.79 m = 10533.97 ft Freezing level: 673.93 mb = 3430.16 m = 11253.65 ft Freezing level: 553.08 mb = 5058.00 m = 16594.28 ft Wetbulb zero: 692.82 mb = 3209.54 m = 10529.85 ft Precipitable water: 0.88 inches Sfc-500 mean rel hum: 47.63 % Est. max temperature: 20.57 C = 69.03 F Sfc-Lift cond lev (LCL): 905.62 mb = 1006.07 m = 3300.71 ft T: 9.00 C 700-500 lapse rate: 2.17 C/km ThetaE index: 3.97 C Layer 1000.0- 925.0 mb Conv cond level (CCL): 706.40 mb = 3052.52 m = 10014.71 ft Mean mixing ratio: 5.96 g/kg Conv temperature: 31.79 C = 89.22 F Cap Strength: 20.64 C Lifted Index: 20.43 C Risk: None Lifted Index @300 mb: 26.84 C Lifted Index @700 mb: 7.44 C Showalter Index: 14.95 C Risk: None Total Totals Index: 23.50 C Risk: None Vertical Totals Index: 11.90 C Cross Totals Index: 11.60 C K Index: 17.90 Risk: < 20 % chance of thunderstorms Sweat Index: 112.60 Risk: None Energy Index: 3.08 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 7.73 J/kg Max Up Vert Vel: 3.93 m/s Conv Inhibition (B-): 15299.91 J/kg Cap Strength: 20.63 C Lift Cond Lev (LCL): 880.42 mb = 1239.36 m = 4066.08 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 314 at 11 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 1021 6 80 3 -3.0 -0.5 | 123 13 -10.6 6.9 1 1000 178 45 9 -6.4 -6.4 | 94 14 -14.0 1.1 2 925 831 25 3 -1.3 -2.7 | 118 10 -8.9 4.7 3 850 1530 185 3 0.3 3.0 | 145 13 -7.4 10.4 4 700 3127 305 13 10.6 -7.5 | 270 3 3.0 -0.0 5 500 5840 270 31 31.0 -0.0 | 252 25 23.4 7.5 6 400 7550 290 52 48.9 -17.8 | 284 43 41.2 -10.3 7 300 9640 285 66 63.8 -17.1 | 280 57 56.1 -9.6 8 250 10910 275 75 74.7 -6.5 | 269 67 67.1 0.9 9 200 12410 250 69 64.8 23.6 | 242 65 57.2 31.1 10 181 13052 245 77 69.8 32.5 | 237 74 62.2 40.0 11 150 14220 260 68 67.0 11.8 | 252 62 59.3 19.3 12 100 16590 270 31 31.0 -0.0 | 252 25 23.4 7.5 Wind Parameters Mean winds (0-6000m): 284.4 at 14.2 knts Storm direction: 314.4 at 10.7 knts Shear (0-3000m) pos: 2.5 neg: 0.8 tot: 3.2 10-3/s Storm rel Dir Shear (0-3000m): 114.9 deg Storm rel helicity (0-3000m) pos: 72.1 neg: -23.6 tot: 48.6 m^2/s^2 ave: 16.2 10^-3 m/s^2 rel: 0.47 Storm rel vorticity (0-3000m) horiz: 6.6 stream: 3.1 10^-3/s Energy-Hel index: 0.00 Bulk Rich Number: 0.17 Bulk Shear: 46.41 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 45 7 101 13| 0.0 4.5 4.5| 5.7 -23.6 -17.9 -35.8 -0.50| 10.2 -5.1 1000 43 5 107 12| 1.9 2.3 4.2| 15.2 -23.6 -8.4 -8.4 -0.11| 7.6 -0.8 1500 47 5 111 12| 3.0 1.5 4.5| 33.7 -23.6 10.1 6.8 0.18| 7.1 1.3 2000 57 5 113 12| 3.1 1.1 4.2| 48.2 -23.6 24.7 12.3 0.32| 6.5 2.0 2500 328 5 122 6| 2.9 0.9 3.8| 62.7 -23.6 39.1 15.6 0.42| 6.4 2.6 3000 318 6 130 5| 2.5 0.8 3.2| 72.1 -23.6 48.6 16.2 0.47| 6.6 3.1 4000 309 8 154 3| 2.2 0.7 2.9| 74.1 -24.4 49.7 12.4 0.43| 6.1 2.6 5000 296 11 222 4| 1.8 1.2 2.9| 74.1 -32.8 41.3 8.3 0.32| 5.7 1.8 6000 284 14 237 7| 1.5 1.7 3.1| 84.0 -50.2 33.8 5.6 0.25| 5.6 1.4 Wrote GIF file: /home/apache/climate/data/raob//VVNB/skewt/VVNB.skewt.20251227.00.gif