UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025121800.upa.cvt Date: 0000Z 18 DEC 25 Searching for VVNB... Searching the city database file for: VVNB ... Date:0000Z 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 1020 6 19.2 15.0 77 4.2 16.5 65 1 290.7 292.6 288.9 320.5 10.56 1 1000 176 18.4 14.4 78 4.0 15.8 25 7 291.5 293.4 289.0 320.9 10.36 2 957 552 15.8 12.8 82 3.0 14.0 124 4 292.6 294.3 288.9 320.4 9.75 3 928 814 16.0 11.0 72 5.0 13.0 193 1 295.4 297.0 289.1 321.1 8.91 4 925 842 15.8 12.5 81 3.3 13.7 200 1 295.5 297.2 290.0 324.0 9.89 5 917 916 15.2 12.9 86 2.3 13.7 195 2 295.6 297.4 290.3 325.1 10.25 6 850 1555 11.6 5.6 67 6.0 8.2 150 13 298.3 299.5 288.1 318.1 6.72 7 799 2069 7.4 6.3 93 1.1 6.8 190 12 299.1 300.5 289.1 321.3 7.51 8 706 3082 3.4 -8.6 41 12.0 -1.6 270 9 305.5 306.0 286.9 314.4 2.83 9 700 3151 3.0 -9.0 41 12.0 -2.0 275 9 305.8 306.3 286.9 314.5 2.76 10 666 3551 0.0 -17.0 26 17.0 -5.7 273 13 306.8 307.1 285.9 311.7 1.51 11 662 3600 0.8 -25.2 12 26.0 -6.5 273 13 308.3 308.4 285.6 310.8 0.74 12 587 4554 -5.3 -27.3 16 22.0 -10.9 267 23 311.9 312.1 286.8 314.3 0.69 13 523 5453 -8.9 -29.9 16 21.0 -13.9 262 32 318.1 318.2 288.8 320.2 0.61 14 507 5693 -9.9 -38.9 7 29.0 -15.3 261 34 319.7 319.7 288.9 320.7 0.26 15 500 5800 -10.7 -40.7 6 30.0 -15.9 260 35 320.0 320.0 289.0 320.8 0.22 16 446 6669 -17.7 -43.7 8 26.0 -21.3 257 45 321.8 321.8 289.5 322.5 0.18 17 400 7480 -20.9 -54.9 3 34.0 -24.3 255 54 327.8 327.8 291.2 328.0 0.06 18 391 7648 -21.9 -55.9 3 34.0 -25.1 255 57 328.7 328.7 291.4 328.9 0.05 19 353 8394 -25.7 -60.7 2 35.0 -28.4 253 69 333.3 333.3 292.6 333.4 0.03 20 335 8773 -26.1 -60.1 3 34.0 -28.8 252 76 337.8 337.8 293.8 337.9 0.03 21 328 8926 -24.3 -63.3 1 39.0 -27.5 252 78 342.3 342.3 294.9 342.4 0.02 22 300 9570 -28.7 -63.7 2 35.0 -31.2 250 89 344.9 344.9 295.5 345.0 0.02 23 250 10840 -39.3 -63.3 6 24.0 -40.4 250 99 347.6 347.6 296.1 347.8 0.03 24 244 11007 -40.1 -65.1 5 25.0 -41.2 247 100 348.9 348.9 296.4 349.0 0.02 25 239 11148 -41.4 -65.3 6 23.9 -42.4 245 101 348.9 348.9 296.4 349.0 0.02 26 200 12330 -52.9 -66.9 17 14.0 -53.2 240 97 349.0 349.0 296.4 349.1 0.02 27 199 12362 -52.9 -66.9 17 14.0 -53.2 240 97 349.5 349.5 296.5 349.6 0.02 28 160 13736 -62.9 -79.9 8 17.0 -63.0 252 89 355.1 355.1 297.7 355.1 0.00 29 150 14130 -65.5 -81.5 9 16.0 -65.6 255 87 357.2 357.2 298.1 357.3 0.00 30 125 15214 -74.7 -80.7 39 6.0 -74.7 266 79 359.7 359.7 298.7 359.7 0.00 31 122 15354 -75.5 -83.5 27 8.0 -75.5 268 78 360.7 360.7 298.8 360.8 0.00 32 112 15853 -72.9 -87.9 9 15.0 -72.9 273 74 374.5 374.5 301.4 374.5 0.00 33 100 16510 -77.1 -89.1 13 12.0 -77.1 280 69 378.8 378.8 302.1 378.8 0.00 TRP WND 239 11148 -41.4 -65.3 6 23.9 -42.4 245 101 348.9 348.9 296.4 349.0 0.02 Sounding variables and indices 1000-500 mb thick: 5624.00 m Freezing level: 652.16 mb = 3724.80 m = 12220.32 ft Wetbulb zero: 723.99 mb = 2875.78 m = 9434.85 ft Precipitable water: 1.05 inches Sfc-500 mean rel hum: 47.06 % Est. max temperature: 26.01 C = 78.81 F Sfc-Lift cond lev (LCL): 958.55 mb = 538.36 m = 1766.25 ft T: 15.90 C 700-500 lapse rate: 5.17 C/km ThetaE index: 7.03 C Layer 850.0- 799.0 mb Conv cond level (CCL): 844.02 mb = 1613.61 m = 5293.94 ft Mean mixing ratio: 9.89 g/kg Conv temperature: 26.94 C = 80.50 F Cap Strength: 5.20 C Lifted Index: 5.16 C Risk: None Lifted Index @300 mb: 17.51 C Lifted Index @700 mb: 2.16 C Showalter Index: 6.74 C Risk: None Total Totals Index: 38.60 C Risk: None Vertical Totals Index: 22.30 C Cross Totals Index: 16.30 C K Index: 15.90 Risk: < 20 % chance of thunderstorms Sweat Index: 128.20 Risk: None Energy Index: 0.65 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 17.90 J/kg Max Up Vert Vel: 5.98 m/s Conv Inhibition (B-): 7835.54 J/kg Cap Strength: 5.19 C Lift Cond Lev (LCL): 916.38 mb = 921.44 m = 3023.07 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 284 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 1020 6 65 1 -0.9 -0.4 | 101 12 -12.2 2.4 1 1000 176 25 7 -3.0 -6.3 | 76 15 -14.2 -3.5 2 925 842 200 1 0.3 0.9 | 109 12 -10.9 3.7 3 850 1555 150 13 -6.5 11.3 | 128 23 -17.8 14.1 4 700 3151 275 9 9.0 -0.8 | 131 3 -2.3 2.0 5 500 5800 260 35 34.5 6.1 | 249 25 23.2 8.9 6 400 7480 255 54 52.2 14.0 | 248 44 40.9 16.8 7 300 9570 250 89 83.6 30.4 | 245 80 72.4 33.2 8 250 10840 250 99 93.0 33.9 | 246 90 81.8 36.7 9 239 11148 245 101 91.5 42.7 | 240 92 80.3 45.5 10 200 12330 240 97 84.0 48.5 | 235 89 72.7 51.3 11 150 14130 255 87 84.0 22.5 | 251 77 72.8 25.3 12 100 16510 280 69 68.0 -12.0 | 279 57 56.7 -9.2 Wind Parameters Mean winds (0-6000m): 254.0 at 15.5 knts Storm direction: 284.0 at 11.6 knts Shear (0-3000m) pos: 2.9 neg: 1.6 tot: 4.6 10-3/s Storm rel Dir Shear (0-3000m): 51.9 deg Storm rel helicity (0-3000m) pos: 100.2 neg: -25.0 tot: 75.2 m^2/s^2 ave: 25.1 10^-3 m/s^2 rel: 0.31 Storm rel vorticity (0-3000m) horiz: 9.1 stream: 2.8 10^-3/s Energy-Hel index: 0.01 Bulk Rich Number: 0.34 Bulk Shear: 53.07 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 46 5 87 15| 3.5 0.0 3.5| 31.5 -19.3 12.2 24.4 0.16| 14.2 2.2 1000 29 4 88 13| 2.3 0.0 2.3| 45.3 -20.8 24.5 24.5 0.27| 10.7 2.9 1500 119 5 108 17| 1.5 3.2 4.7| 54.1 -23.7 30.3 20.2 0.24| 10.5 2.6 2000 147 7 120 17| 2.4 2.4 4.8| 84.2 -23.7 60.5 30.2 0.34| 9.8 3.4 2500 165 8 128 17| 3.0 1.9 4.9| 99.1 -23.7 75.3 30.1 0.37| 9.5 3.5 3000 173 8 132 16| 2.9 1.6 4.6|100.2 -25.0 75.2 25.1 0.31| 9.1 2.8 4000 223 9 153 11| 2.7 1.0 3.7|104.4 -25.9 78.5 19.6 0.33| 8.1 2.7 5000 249 12 179 7| 2.1 1.4 3.5|106.4 -26.0 80.4 16.1 0.29| 7.5 2.2 6000 254 15 207 8| 1.8 2.0 3.8|106.7 -30.4 76.3 12.7 0.25| 7.2 1.8 Wrote GIF file: /home/apache/climate/data/raob//VVNB/skewt/VVNB.skewt.20251218.00.gif