UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025101812.upa.cvt Date: 1200Z 18 OCT 25 Searching for VVNB... Searching the city database file for: VVNB ... Date:1200Z 18 OCT 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 1011 6 30.0 22.0 62 8.0 24.2 130 1 302.2 305.3 297.0 351.5 16.69 1 1000 102 29.4 21.4 62 8.0 23.6 120 3 302.5 305.5 296.8 350.6 16.25 2 925 794 24.2 19.3 74 4.9 20.7 85 5 304.1 306.9 296.6 349.9 15.41 3 862 1409 19.2 16.8 86 2.4 17.5 89 8 305.0 307.7 296.0 347.2 14.10 4 850 1530 18.8 15.0 79 3.8 16.3 90 9 305.8 308.2 295.3 344.0 12.72 5 817 1869 16.8 10.8 68 6.0 13.0 90 9 307.2 309.1 293.7 337.5 10.01 6 786 2198 14.2 11.5 84 2.7 12.4 90 10 307.8 309.9 294.5 340.9 10.91 7 766 2416 14.0 5.0 55 9.0 8.7 90 10 309.9 311.2 292.2 331.9 7.16 8 750 2595 12.8 4.8 58 8.0 8.1 90 10 310.5 311.8 292.4 332.7 7.21 9 745 2651 12.0 9.7 86 2.3 10.6 90 10 310.2 312.1 294.7 341.4 10.20 10 737 2741 12.0 3.0 54 9.0 6.9 90 10 311.2 312.4 292.0 331.2 6.45 11 727 2856 10.6 9.1 90 1.5 9.6 90 11 310.8 312.7 294.7 341.6 10.04 12 700 3171 8.6 6.4 86 2.2 7.3 90 11 312.0 313.7 294.0 338.7 8.65 13 677 3447 7.4 3.1 74 4.3 4.9 91 11 313.7 315.0 293.3 335.8 7.08 14 636 3960 5.6 -3.4 52 9.0 1.0 94 11 317.3 318.2 292.3 332.3 4.68 15 631 4024 5.0 0.5 73 4.5 2.5 95 11 317.3 318.5 293.7 337.3 6.30 16 613 4260 4.2 -5.8 48 10.0 -0.6 96 11 319.0 319.8 292.3 332.2 4.05 17 574 4792 0.6 -7.4 55 8.0 -3.1 99 11 320.9 321.6 292.6 333.4 3.82 18 565 4919 -0.5 -5.1 71 4.6 -2.7 100 11 321.0 321.9 293.3 336.1 4.64 19 560 4990 -0.5 -3.6 80 3.1 -2.1 100 11 321.8 322.9 294.0 338.9 5.24 20 547 5178 -1.3 -5.5 73 4.2 -3.4 101 11 323.0 324.0 293.9 338.3 4.65 21 542 5251 -1.5 -13.5 39 12.0 -6.4 101 11 323.7 324.1 292.3 332.1 2.49 22 534 5370 -2.3 -9.3 59 7.0 -5.4 102 11 324.1 324.8 293.3 335.9 3.54 23 500 5890 -4.9 -15.9 42 11.0 -9.1 105 11 327.1 327.5 293.0 334.7 2.21 24 499 5906 -5.1 -14.1 49 9.0 -8.7 105 11 327.0 327.5 293.3 335.8 2.57 25 493 6000 -5.3 -25.3 19 20.0 -11.2 102 11 327.9 328.1 292.1 331.4 0.99 26 492 6016 -5.3 -24.3 21 19.0 -11.1 101 11 328.1 328.3 292.3 332.0 1.09 27 487 6096 -6.1 -15.1 49 9.0 -9.6 99 12 328.1 328.5 293.4 336.4 2.43 28 463 6489 -8.3 -28.3 18 20.0 -13.7 88 13 330.1 330.3 292.5 333.0 0.80 29 455 6624 -9.5 -21.5 37 12.0 -13.3 84 14 330.2 330.5 293.2 335.6 1.51 30 435 6969 -11.3 -24.3 33 13.0 -15.1 74 15 332.2 332.5 293.5 336.7 1.23 31 428 7093 -11.1 -34.1 13 23.0 -16.3 70 15 334.0 334.1 293.3 335.9 0.50 32 423 7183 -11.5 -22.5 40 11.0 -14.9 68 15 334.6 334.9 294.3 340.0 1.49 33 422 7201 -11.3 -33.3 14 22.0 -16.4 67 16 335.1 335.2 293.6 337.2 0.55 34 415 7329 -11.9 -33.9 14 22.0 -16.9 63 16 336.0 336.1 293.8 338.0 0.52 35 400 7610 -13.1 -35.1 14 22.0 -17.9 55 17 338.0 338.1 294.3 339.8 0.48 36 363 8341 -18.1 -46.1 7 28.0 -22.3 50 14 340.8 340.8 294.7 341.5 0.17 37 302 9683 -29.1 -43.1 25 14.0 -30.9 40 9 343.7 343.8 295.5 344.8 0.28 38 300 9730 -29.5 -44.5 22 15.0 -31.3 40 9 343.8 343.9 295.4 344.8 0.24 39 250 11010 -40.5 -54.5 21 14.0 -41.3 345 3 345.9 345.9 295.8 346.2 0.09 40 235 11428 -44.1 -56.1 25 12.0 -44.7 346 6 346.6 346.6 296.0 346.9 0.08 41 220 11867 -47.3 -63.3 14 16.0 -47.8 348 9 348.2 348.3 296.3 348.4 0.03 42 200 12490 -52.7 -64.7 22 12.0 -53.0 350 13 349.3 349.3 296.5 349.5 0.03 43 179 13194 -58.9 -67.9 30 9.0 -59.0 331 12 350.4 350.4 296.7 350.5 0.02 44 171 13479 -60.3 -73.3 17 13.0 -60.4 323 12 352.7 352.7 297.3 352.8 0.01 45 150 14280 -67.1 -75.1 31 8.0 -67.2 300 11 354.5 354.5 297.6 354.5 0.01 46 142 14607 -70.1 -76.1 41 6.0 -70.1 320 11 354.9 354.9 297.7 354.9 0.01 47 118 15692 -75.3 -83.3 28 8.0 -75.3 26 10 364.6 364.6 299.6 364.6 0.00 48 100 16640 -78.9 -84.9 37 6.0 -78.9 85 9 375.3 375.3 301.5 375.3 0.00 TRP WND Sounding variables and indices 1000-500 mb thick: 5788.00 m Freezing level: 569.09 mb = 4861.37 m = 15949.20 ft Wetbulb zero: 616.55 mb = 4213.29 m = 13822.97 ft Precipitable water: 1.98 inches Sfc-500 mean rel hum: 67.34 % Est. max temperature: 32.91 C = 91.23 F Sfc-Lift cond lev (LCL): 900.66 mb = 1026.47 m = 3367.65 ft T: 22.31 C 700-500 lapse rate: 4.97 C/km ThetaE index: 14.04 C Layer 1000.0- 786.0 mb Conv cond level (CCL): 839.43 mb = 1637.27 m = 5371.57 ft Mean mixing ratio: 15.82 g/kg Conv temperature: 34.09 C = 93.35 F Cap Strength: 1.44 C Lifted Index: -2.05 C Risk: Severe thunderstorms possible Lifted Index @300 mb: -1.28 C Lifted Index @700 mb: -2.08 C Showalter Index: 0.30 C Risk: Thunderstorms probable Total Totals Index: 43.60 C Risk: None Vertical Totals Index: 23.70 C Cross Totals Index: 19.90 C K Index: 36.50 Risk: > 80 % chance of thunderstorms Sweat Index: 209.00 Risk: None Energy Index: -1.82 Risk: Scattered severe thunderstorms Parcel Indices Parcel: using 100 mb layer CAPE (B+): 532.21 J/kg Max Up Vert Vel: 32.63 m/s Conv Inhibition (B-): 34.95 J/kg Cap Strength: 1.44 C Lift Cond Lev (LCL): 875.61 mb = 1272.39 m = 4174.44 ft Lev Free Conv (LFC): 800.61 mb = 2041.78 m = 6698.67 ft Equ Level (EL): 180.61 mb = 13136.91 m = 43099.59 ft B at Equ Level: 524.76 J/kg Max Parcel Lev (MPL): 110.61 mb = 16062.27 m = 52697.09 ft Wind level data Storm motion: 125 at 7 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 1011 6 130 1 -0.8 0.6 | 304 6 5.0 -3.4 1 1000 102 120 3 -2.6 1.5 | 308 4 3.2 -2.5 2 925 794 85 5 -5.0 -0.4 | 350 5 0.8 -4.4 3 850 1530 90 9 -9.0 0.0 | 39 5 -3.2 -4.0 4 700 3171 90 11 -11.0 0.0 | 53 7 -5.2 -4.0 5 500 5890 105 11 -10.6 2.8 | 77 5 -4.9 -1.2 6 400 7610 55 17 -13.9 -9.8 | 31 16 -8.2 -13.8 7 300 9730 40 9 -5.8 -6.9 | 0 11 -0.0 -10.9 8 250 11010 345 3 0.8 -2.9 | 316 10 6.5 -6.9 9 200 12490 350 13 2.3 -12.8 | 334 19 8.0 -16.8 10 150 14280 300 11 9.5 -5.5 | 302 18 15.3 -9.5 11 100 16640 85 9 -9.0 -0.8 | 34 6 -3.2 -4.8 Wind Parameters Mean winds (0-6000m): 94.7 at 9.4 knts Storm direction: 124.7 at 7.0 knts Shear (0-3000m) pos: 0.6 neg: 1.1 tot: 1.7 10-3/s Storm rel Dir Shear (0-3000m): 107.6 deg Storm rel helicity (0-3000m) pos: 10.0 neg: 0.0 tot: 10.0 m^2/s^2 ave: 3.3 10^-3 m/s^2 rel: 0.76 Storm rel vorticity (0-3000m) horiz: 1.9 stream: 1.4 10^-3/s Energy-Hel index: 0.03 Bulk Rich Number: 102.55 Bulk Shear: 5.19 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 ------------------------------------------------------------------------------- 500 110 3 317 4| 0.0 3.4 3.4| 2.1 0.0 2.1 4.2 0.54| 3.9 2.1 1000 96 4 335 4| 0.0 2.8 2.8| 4.7 0.0 4.7 4.7 0.69| 3.3 2.2 1500 92 5 353 4| 0.9 1.9 2.8| 7.9 0.0 7.9 5.3 0.77| 3.1 2.4 2000 91 6 7 4| 0.9 1.4 2.3| 8.7 0.0 8.7 4.4 0.77| 2.5 1.9 2500 91 7 18 4| 0.7 1.2 2.0| 9.3 0.0 9.3 3.7 0.77| 2.1 1.6 3000 91 8 25 4| 0.6 1.1 1.7| 10.0 0.0 10.0 3.3 0.76| 1.9 1.4 4000 91 8 35 5| 0.5 0.9 1.3| 11.4 0.0 11.4 2.8 0.76| 1.6 1.2 5000 93 9 42 5| 0.4 0.7 1.1| 12.7 0.0 12.7 2.5 0.77| 1.3 1.0 6000 95 9 48 5| 0.4 0.6 1.0| 13.8 -0.5 13.3 2.2 0.71| 1.3 0.9 Wrote GIF file: /home/apache/climate/data/raob//VVNB/skewt/VVNB.skewt.20251018.12.gif