UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025041812.upa.cvt Date: 1200Z 18 APR 25 Searching for VVNB... Searching the city database file for: VVNB ... Date:1200Z 18 APR 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 1003 6 27.8 24.3 81 3.5 25.2 150 3 300.7 304.2 298.2 357.8 19.41 1 1000 34 27.6 24.0 81 3.6 25.0 150 5 300.8 304.3 298.1 357.0 19.11 2 963 368 24.6 23.2 92 1.4 23.6 172 10 301.0 304.4 298.0 356.7 18.91 3 942 563 25.4 24.4 94 1.0 24.7 184 13 303.7 307.5 299.8 365.9 20.84 4 934 638 26.0 23.2 85 2.8 23.9 189 14 305.0 308.7 299.4 363.5 19.51 5 925 724 25.8 23.2 86 2.6 23.9 195 15 305.7 309.4 299.7 364.9 19.71 6 850 1469 23.6 16.6 65 7.0 18.7 245 21 310.9 313.5 297.5 354.1 14.12 7 849 1479 23.6 15.6 61 8.0 18.1 245 21 311.0 313.5 297.0 351.5 13.24 8 773 2291 17.4 13.5 78 3.9 14.7 250 19 312.8 315.2 297.0 351.9 12.69 9 714 2966 13.2 5.2 58 8.0 8.4 254 17 315.3 316.8 294.3 339.8 7.79 10 700 3133 12.0 6.0 67 6.0 8.3 255 17 315.8 317.4 294.8 342.2 8.41 11 580 4679 0.2 0.0 99 0.2 0.1 247 23 319.4 320.7 294.4 340.6 6.61 12 566 4875 -0.9 -0.9 100 0.0 -0.9 246 23 320.4 321.6 294.5 340.8 6.34 13 500 5860 -5.5 -5.9 97 0.4 -5.7 240 27 326.3 327.3 295.0 342.7 4.93 14 400 7580 -14.9 -16.9 85 2.0 -15.6 265 36 335.6 336.1 295.4 344.6 2.55 15 398 7618 -15.1 -16.9 86 1.8 -15.7 265 36 335.8 336.4 295.5 344.9 2.56 16 373 8106 -17.5 -25.5 50 8.0 -19.7 264 37 339.0 339.2 295.2 343.7 1.29 17 372 8126 -17.5 -23.5 59 6.0 -19.3 264 37 339.2 339.5 295.5 344.9 1.55 18 320 9236 -25.7 -28.1 80 2.4 -26.2 261 39 342.8 343.0 296.0 347.2 1.18 19 300 9700 -29.3 -32.1 77 2.8 -29.8 260 40 344.1 344.3 296.1 347.4 0.86 20 250 10970 -38.9 -43.1 64 4.2 -39.3 250 46 348.2 348.3 296.5 349.6 0.34 21 241 11220 -40.5 -45.5 59 5.0 -40.9 250 46 349.5 349.6 296.8 350.6 0.27 22 228 11595 -43.9 -47.7 66 3.8 -44.2 250 45 349.9 349.9 296.8 350.8 0.22 23 200 12460 -51.3 -56.3 55 5.0 -51.5 250 44 351.5 351.6 297.0 351.9 0.09 24 188 12860 -54.3 -61.3 42 7.0 -54.5 253 42 353.0 353.0 297.3 353.2 0.05 25 175 13316 -59.1 -63.9 54 4.8 -59.2 257 40 352.4 352.4 297.2 352.6 0.04 26 166 13646 -61.5 -65.0 63 3.5 -61.6 260 39 353.7 353.7 297.5 353.9 0.04 27 157 13991 -63.5 -67.6 57 4.1 -63.6 263 37 356.0 356.0 297.9 356.1 0.03 28 150 14270 -65.3 -77.3 17 12.0 -65.4 265 36 357.6 357.6 298.2 357.6 0.01 29 138 14772 -68.7 -73.7 48 5.0 -68.7 263 32 360.2 360.2 298.8 360.3 0.01 30 121 15551 -71.5 -82.5 18 11.0 -71.5 260 25 368.9 368.9 300.4 368.9 0.00 31 100 16650 -79.9 -86.9 30 7.0 -79.9 255 15 373.4 373.4 301.1 373.4 0.00 TRP WND Sounding variables and indices 1000-500 mb thick: 5826.00 m Freezing level: 577.45 mb = 4714.77 m = 15468.22 ft Wetbulb zero: 578.90 mb = 4694.36 m = 15401.27 ft Precipitable water: 2.53 inches Sfc-500 mean rel hum: 81.72 % Est. max temperature: 37.77 C = 99.98 F Sfc-Lift cond lev (LCL): 953.82 mb = 452.74 m = 1485.35 ft T: 24.95 C 700-500 lapse rate: 6.42 C/km ThetaE index: 13.42 C Layer 850.0- 773.0 mb Conv cond level (CCL): 813.82 mb = 1845.72 m = 6055.44 ft Mean mixing ratio: 19.31 g/kg Conv temperature: 38.91 C = 102.03 F Cap Strength: 3.48 C Lifted Index: -6.05 C Risk: Severe thunderstorms probable Lifted Index @300 mb: -6.35 C Lifted Index @700 mb: -1.32 C Showalter Index: -3.94 C Risk: Severe thunderstorms possible Total Totals Index: 51.20 C Risk: Scattered heavy thunderstorms Vertical Totals Index: 29.10 C Cross Totals Index: 22.10 C K Index: 39.70 Risk: > 80 % chance of thunderstorms Sweat Index: 312.20 Risk: Showers and thunderstorms possible Energy Index: -2.25 Risk: Severe Thunderstorms probable Parcel Indices Parcel: using 100 mb layer CAPE (B+): 2383.00 J/kg Max Up Vert Vel: 69.04 m/s Conv Inhibition (B-): 144.08 J/kg Cap Strength: 3.48 C Lift Cond Lev (LCL): 919.92 mb = 772.51 m = 2534.44 ft Lev Free Conv (LFC): 744.92 mb = 2605.84 m = 8549.25 ft Equ Level (EL): 134.92 mb = 14905.33 m = 48901.40 ft B at Equ Level: 2366.23 J/kg Wind level data Storm motion: 272 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 1003 6 150 3 -1.5 2.6 | 101 16 -16.1 3.0 1 1000 34 150 5 -2.5 4.3 | 105 18 -17.1 4.7 2 925 724 195 15 3.9 14.5 | 144 18 -10.7 14.9 3 850 1469 245 21 19.0 8.9 | 206 10 4.4 9.3 4 700 3133 255 17 16.4 4.4 | 201 5 1.8 4.8 5 500 5860 240 27 23.4 13.5 | 212 16 8.8 13.9 6 400 7580 265 36 35.9 3.1 | 261 22 21.3 3.5 7 300 9700 260 40 39.4 6.9 | 254 26 24.8 7.3 8 250 10970 250 46 43.2 15.7 | 241 33 28.6 16.1 9 200 12460 250 44 41.3 15.0 | 240 31 26.8 15.5 10 150 14270 265 36 35.9 3.1 | 261 22 21.3 3.5 11 100 16650 255 15 14.5 3.9 | 179 4 -0.1 4.3 Wind Parameters Mean winds (0-6000m): 241.6 at 19.5 knts Storm direction: 271.6 at 14.6 knts Shear (0-3000m) pos: 3.1 neg: 0.0 tot: 3.1 10-3/s Storm rel Dir Shear (0-3000m): 101.5 deg Storm rel helicity (0-3000m) pos: 123.8 neg: -0.7 tot: 123.0 m^2/s^2 ave: 41.0 10^-3 m/s^2 rel: 0.78 Storm rel vorticity (0-3000m) horiz: 6.2 stream: 4.9 10^-3/s Energy-Hel index: 1.84 Bulk Rich Number: 53.22 Bulk Shear: 44.78 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 ------------------------------------------------------------------------------- 500 171 8 118 18| 9.7 0.0 9.7| 46.1 0.0 46.1 92.2 0.94| 10.5 9.8 1000 192 12 134 17| 8.3 0.0 8.3| 91.2 0.0 91.2 91.2 0.93| 10.6 9.8 1500 212 14 150 14| 7.3 0.0 7.3|123.7 0.0 123.7 82.5 0.91| 10.8 9.9 2000 224 16 162 12| 5.2 0.0 5.2|123.8 -0.0 123.7 61.9 0.87| 8.5 7.4 2500 230 16 170 11| 4.0 0.0 4.0|123.8 -0.3 123.5 49.4 0.83| 7.2 5.9 3000 235 17 175 10| 3.1 0.0 3.1|123.8 -0.7 123.0 41.0 0.78| 6.2 4.9 4000 240 17 181 9| 2.4 0.4 2.8|125.7 -0.9 124.9 31.2 0.74| 5.2 3.8 5000 242 18 189 9| 1.9 0.8 2.6|126.6 -0.9 125.7 25.1 0.67| 4.6 3.1 6000 242 19 195 10| 1.7 0.8 2.6|131.9 -1.9 130.1 21.7 0.63| 4.2 2.6 Wrote GIF file: /home/apache/climate/data/raob//VVNB/skewt/VVNB.skewt.20250418.12.gif