UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025122900.upa.cvt Date: 0000Z 29 DEC 25 Searching for VVNB... Searching the city database file for: VVNB ... Date:0000Z 29 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 19.0 13.0 68 6.0 15.3 105 1 290.8 292.5 287.8 317.1 9.29 1 1000 144 17.8 13.3 75 4.5 15.0 120 3 291.0 292.7 288.2 318.2 9.64 2 925 807 13.2 11.8 91 1.4 12.4 200 13 292.8 294.5 288.6 319.7 9.44 3 902 1019 11.4 11.4 100 0.0 11.4 212 14 293.1 294.8 288.7 320.0 9.42 4 853 1485 9.0 8.9 99 0.1 8.9 238 17 295.3 296.8 288.6 319.6 8.42 5 850 1514 10.0 7.5 84 2.5 8.6 240 17 296.6 298.0 288.4 319.0 7.67 6 846 1553 10.2 7.5 83 2.7 8.6 241 17 297.2 298.6 288.6 319.7 7.71 7 777 2257 6.4 5.6 95 0.8 5.9 256 21 300.5 301.8 289.5 322.3 7.36 8 766 2374 7.2 1.2 66 6.0 4.1 259 21 302.6 303.6 288.4 319.0 5.45 9 763 2407 10.2 -10.8 22 21.0 1.5 259 21 306.1 306.6 286.4 313.1 2.20 10 760 2440 12.8 -16.2 12 29.0 1.7 260 22 309.3 309.6 286.7 314.0 1.42 11 758 2462 12.8 -15.2 13 28.0 1.8 261 22 309.5 309.8 286.9 314.6 1.55 12 755 2495 12.8 -15.2 13 28.0 1.8 261 22 309.9 310.2 287.1 315.0 1.55 13 700 3128 10.4 -30.6 4 41.0 -1.5 275 25 314.0 314.1 287.2 315.5 0.43 14 681 3356 9.8 -35.2 3 45.0 -2.2 276 26 315.8 315.9 287.7 316.8 0.28 15 581 4650 0.0 -31.0 8 31.0 -8.1 281 33 319.0 319.1 289.0 320.8 0.50 16 500 5840 -5.5 -42.5 4 37.0 -12.7 285 40 326.3 326.4 290.9 327.0 0.18 17 457 6539 -8.9 -39.9 6 31.0 -15.1 281 46 330.6 330.6 292.2 331.6 0.26 18 402 7513 -17.5 -41.5 10 24.0 -21.4 275 54 331.8 331.8 292.4 332.7 0.25 19 400 7550 -17.3 -45.3 7 28.0 -21.4 275 54 332.5 332.5 292.6 333.2 0.17 20 356 8414 -22.3 -49.3 7 27.0 -25.5 269 56 337.1 337.1 293.7 337.5 0.12 21 300 9650 -30.1 -58.1 5 28.0 -32.2 260 60 343.0 343.0 295.1 343.2 0.05 22 278 10191 -33.5 -58.5 6 25.0 -35.2 256 62 345.6 345.6 295.7 345.8 0.05 23 250 10930 -40.1 -58.1 13 18.0 -41.1 250 64 346.4 346.5 295.9 346.7 0.06 24 242 11150 -42.3 -58.3 16 16.0 -43.0 251 63 346.4 346.4 295.9 346.6 0.06 25 200 12410 -50.7 -74.7 4 24.0 -51.1 260 60 352.5 352.5 297.2 352.5 0.01 26 165 13635 -61.7 -76.7 12 15.0 -61.9 236 75 354.0 354.0 297.5 354.0 0.01 27 164 13672 -62.0 -77.1 12 15.1 -62.1 235 75 354.2 354.2 297.5 354.2 0.01 28 150 14220 -65.9 -82.9 8 17.0 -66.0 235 73 356.6 356.6 298.0 356.6 0.00 29 109 16100 -79.7 -89.7 18 10.0 -79.7 260 35 364.6 364.6 299.6 364.6 0.00 30 100 16590 -79.5 -89.5 18 10.0 -79.5 250 25 374.1 374.1 301.3 374.1 0.00 TRP 109 16100 -79.7 -89.7 18 10.0 -79.7 260 35 364.6 364.6 299.6 364.6 0.00 WND 164 13672 -62.0 -77.1 12 15.1 -62.1 235 75 354.2 354.2 297.5 354.2 0.01 Sounding variables and indices 1000-500 mb thick: 5696.00 m Freezing level: 581.00 mb = 4650.38 m = 15256.97 ft Wetbulb zero: 725.20 mb = 2832.08 m = 9291.49 ft Precipitable water: 0.93 inches Sfc-500 mean rel hum: 39.05 % Est. max temperature: 22.87 C = 73.17 F Sfc-Lift cond lev (LCL): 929.44 mb = 766.27 m = 2513.98 ft T: 13.48 C 700-500 lapse rate: 5.86 C/km ThetaE index: 9.16 C Layer 766.0- 760.0 mb Conv cond level (CCL): 904.34 mb = 996.93 m = 3270.72 ft Mean mixing ratio: 9.52 g/kg Conv temperature: 21.23 C = 70.21 F Cap Strength: 11.13 C Lifted Index: 11.53 C Risk: None Lifted Index @300 mb: 17.52 C Lifted Index @700 mb: 10.44 C Showalter Index: 11.47 C Risk: None Total Totals Index: 28.50 C Risk: None Vertical Totals Index: 15.50 C Cross Totals Index: 13.00 C K Index: -18.00 Risk: None Sweat Index: 277.39 Risk: None Energy Index: 1.88 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 4.33 J/kg Max Up Vert Vel: 2.94 m/s Conv Inhibition (B-): 10071.89 J/kg Cap Strength: 11.48 C Lift Cond Lev (LCL): 920.92 mb = 844.18 m = 2769.58 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 301 at 18 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 6 105 1 -1.0 0.3 | 120 19 -16.6 9.6 1 1000 144 120 3 -2.6 1.5 | 121 21 -18.3 10.9 2 925 807 200 13 4.4 12.2 | 153 24 -11.2 21.6 3 850 1514 240 17 14.7 8.5 | 177 18 -0.9 17.9 4 700 3128 275 25 24.9 -2.2 | 232 12 9.3 7.2 5 500 5840 285 40 38.6 -10.4 | 272 23 23.0 -1.0 6 400 7550 275 54 53.8 -4.7 | 263 38 38.1 4.7 7 300 9650 260 60 59.1 10.4 | 245 48 43.4 19.8 8 250 10930 250 64 60.1 21.9 | 235 54 44.5 31.3 9 200 12410 260 60 59.1 10.4 | 245 48 43.4 19.8 10 164 13672 235 75 61.4 43.0 | 221 70 45.8 52.4 11 150 14220 235 73 59.8 41.9 | 221 68 44.1 51.3 12 109 16100 260 35 34.5 6.1 | 231 24 18.8 15.5 13 100 16590 250 25 23.5 8.6 | 204 20 7.8 17.9 Wind Parameters Mean winds (0-6000m): 271.0 at 24.3 knts Storm direction: 301.0 at 18.3 knts Shear (0-3000m) pos: 4.4 neg: 0.0 tot: 4.4 10-3/s Storm rel Dir Shear (0-3000m): 106.0 deg Storm rel helicity (0-3000m) pos: 190.6 neg: 0.0 tot: 190.6 m^2/s^2 ave: 63.5 10^-3 m/s^2 rel: 0.84 Storm rel vorticity (0-3000m) horiz: 7.3 stream: 6.1 10^-3/s Energy-Hel index: 0.00 Bulk Rich Number: 0.04 Bulk Shear: 97.60 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 ------------------------------------------------------------------------------- 500 148 5 126 23| 8.2 0.0 8.2| 36.2 0.0 36.2 72.4 0.64| 9.3 6.0 1000 192 8 142 22| 7.4 0.0 7.4|105.6 0.0 105.6 105.6 0.81| 10.4 8.4 1500 211 11 151 21| 6.1 0.0 6.1|140.9 0.0 140.9 93.9 0.81| 9.7 7.8 2000 224 13 159 20| 5.2 0.0 5.2|158.2 0.0 158.2 79.1 0.82| 8.4 6.9 2500 235 14 167 18| 4.7 0.0 4.7|174.6 0.0 174.6 69.8 0.83| 7.7 6.3 3000 244 16 175 16| 4.4 0.0 4.4|190.6 0.0 190.6 63.5 0.84| 7.3 6.1 4000 257 18 190 14| 4.0 0.0 4.0|208.7 0.0 208.7 52.2 0.84| 6.3 5.2 5000 265 21 206 13| 3.7 0.0 3.7|226.9 0.0 226.9 45.4 0.82| 5.6 4.6 6000 271 24 224 12| 3.6 0.0 3.6|243.7 -1.6 242.1 40.4 0.78| 5.2 4.1 Wrote GIF file: /home/apache/climate/data/raob//VVNB/skewt/VVNB.skewt.20251229.00.gif