UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025051612.upa.cvt Date: 1200Z 16 MAY 25 Searching for VTBC... Searching the city database file for: VTBC ... Date:1200Z 16 MAY 25 Station: VTBC WMO ident: 48480 Latitude: 12.60 Longitude: 102.12 Elevation: 4.00 ------------------------------------------------------------------------------- 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 1007 4 27.0 25.0 89 2.0 25.5 40 4 299.6 303.2 298.4 358.7 20.18 1 1000 67 25.8 24.0 90 1.8 24.5 65 1 299.0 302.4 297.7 354.8 19.11 2 995 111 25.4 23.8 91 1.6 24.2 87 2 299.0 302.4 297.5 354.4 18.98 3 985 201 27.2 24.4 85 2.8 25.2 133 4 301.7 305.3 298.8 360.5 19.90 4 973 310 26.8 23.9 84 2.9 24.7 185 7 302.3 305.9 298.7 360.2 19.54 5 925 757 23.4 22.8 96 0.6 23.0 170 10 303.2 306.8 298.8 360.4 19.22 6 919 814 22.8 22.3 97 0.5 22.5 170 9 303.2 306.6 298.5 358.9 18.76 7 850 1494 19.4 17.4 88 2.0 18.0 135 4 306.5 309.2 296.9 351.2 14.87 8 712 3002 11.4 10.4 94 1.0 10.7 105 6 313.6 315.7 296.3 348.3 11.20 9 700 3144 10.4 7.1 80 3.3 8.3 110 6 314.0 315.7 294.8 342.3 9.08 10 685 3325 10.2 5.2 71 5.0 7.2 115 7 315.7 317.3 294.6 341.2 8.13 11 659 3647 8.0 4.5 79 3.5 5.9 124 8 316.8 318.3 294.8 342.1 8.04 12 635 3954 7.4 2.4 71 5.0 4.5 111 7 319.5 320.9 294.9 342.4 7.19 13 586 4614 4.4 0.5 76 3.9 2.2 78 5 323.4 324.7 295.6 345.4 6.79 14 537 5321 -0.7 -2.3 89 1.6 -1.6 66 9 325.5 326.7 295.6 345.3 6.03 15 500 5890 -3.7 -5.5 87 1.8 -4.6 85 8 328.5 329.5 295.6 345.5 5.09 16 450 6714 -8.5 -9.2 95 0.7 -8.8 89 9 332.5 333.4 296.0 347.0 4.24 17 420 7247 -11.1 -13.4 83 2.3 -12.1 93 10 335.8 336.5 296.0 347.2 3.24 18 400 7620 -13.1 -14.6 88 1.5 -13.7 95 11 338.0 338.6 296.4 348.8 3.08 19 356 8497 -18.3 -20.3 84 2.0 -19.0 95 15 342.4 342.9 296.7 350.2 2.14 20 337 8903 -21.1 -22.7 87 1.6 -21.6 95 16 344.0 344.4 296.8 350.8 1.83 21 304 9655 -26.3 -28.5 82 2.2 -26.8 78 20 347.0 347.3 297.0 351.6 1.20 22 300 9750 -26.9 -29.3 80 2.4 -27.5 75 20 347.5 347.7 297.0 351.8 1.13 23 250 11040 -37.3 -40.2 74 2.9 -37.7 80 13 350.6 350.7 297.1 352.5 0.46 24 227 11699 -42.7 -46.6 65 3.9 -43.0 69 18 352.2 352.2 297.3 353.2 0.26 25 200 12540 -50.1 -54.0 63 3.9 -50.3 60 20 353.4 353.5 297.5 354.0 0.12 26 195 12705 -51.3 -55.2 63 3.9 -51.5 59 20 354.1 354.1 297.6 354.6 0.11 27 150 14350 -66.7 -71.7 49 5.0 -66.7 70 22 355.2 355.2 297.7 355.3 0.02 28 148 14431 -67.5 -72.5 49 5.0 -67.5 69 22 355.2 355.2 297.7 355.2 0.01 29 132 15113 -72.9 -77.4 50 4.5 -72.9 62 19 357.3 357.3 298.2 357.4 0.01 30 100 16710 -81.5 -84.5 60 3.0 -81.5 100 34 370.3 370.3 300.6 370.3 0.00 31 97 16881 -82.5 -85.3 62 2.8 -82.5 100 35 371.6 371.6 300.8 371.6 0.00 32 88 17424 -83.1 -87.1 50 4.0 -83.1 86 33 380.8 380.8 302.4 380.9 0.00 33 70 18720 -77.1 -88.1 16 11.0 -77.1 80 36 419.4 419.4 307.6 419.4 0.00 34 65 19149 -74.1 -88.1 10 14.0 -74.2 108 28 435.0 435.0 309.4 435.0 0.00 35 60 19614 -75.3 -90.3 8 15.0 -75.3 138 19 442.4 442.4 310.1 442.4 0.00 36 59 19713 -69.7 -88.7 5 19.0 -69.8 144 17 457.1 457.1 311.5 457.1 0.00 37 58 19815 -68.3 -89.3 3 21.0 -68.5 149 15 462.5 462.5 312.0 462.5 0.00 38 50 20700 -70.9 -89.9 4 19.0 -71.1 60 17 476.4 476.4 313.2 476.4 0.00 39 44 21472 -63.1 -89.1 2 26.0 -63.6 93 21 513.2 513.2 315.8 513.2 0.00 40 42 21757 -64.7 -89.7 2 25.0 -65.1 107 20 516.1 516.1 316.1 516.1 0.00 TRP 97 16881 -82.5 -85.3 62 2.8 -82.5 100 35 371.6 371.6 300.8 371.6 0.00 WND Sounding variables and indices 1000-500 mb thick: 5823.00 m Freezing level: 543.73 mb = 5223.66 m = 17137.79 ft Wetbulb zero: 557.41 mb = 5018.63 m = 16465.12 ft Precipitable water: 2.69 inches Sfc-500 mean rel hum: 85.19 % Est. max temperature: 33.59 C = 92.45 F Sfc-Lift cond lev (LCL): 978.67 mb = 258.34 m = 847.55 ft T: 26.99 C 700-500 lapse rate: 5.13 C/km ThetaE index: 19.14 C Layer 919.0- 659.0 mb Conv cond level (CCL): 917.92 mb = 824.32 m = 2704.44 ft Mean mixing ratio: 19.28 g/kg Conv temperature: 30.69 C = 87.25 F Cap Strength: 0.92 C Lifted Index: -3.84 C Risk: Severe thunderstorms possible Lifted Index @300 mb: -3.31 C Lifted Index @700 mb: -2.57 C Showalter Index: -1.14 C Risk: Thunderstorms probable Total Totals Index: 44.20 C Risk: Scattered moderate thunderstorms Vertical Totals Index: 23.10 C Cross Totals Index: 21.10 C K Index: 37.20 Risk: > 80 % chance of thunderstorms Sweat Index: 224.80 Risk: None Energy Index: -1.16 Risk: Scattered severe thunderstorms Parcel Indices Parcel: using 100 mb layer CAPE (B+): 1565.24 J/kg Max Up Vert Vel: 55.95 m/s Conv Inhibition (B-): 10.76 J/kg Cap Strength: 0.92 C Lift Cond Lev (LCL): 932.98 mb = 681.14 m = 2234.67 ft Lev Free Conv (LFC): 887.98 mb = 1113.24 m = 3652.31 ft Equ Level (EL): 117.98 mb = 15759.07 m = 51702.36 ft B at Equ Level: 1521.24 J/kg Max Parcel Lev (MPL): 67.98 mb = 18889.66 m = 61973.19 ft Wind level data Storm motion: 141 at 5 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 1007 4 40 4 -2.6 -3.1 | 355 7 0.6 -6.9 1 1000 67 65 1 -0.9 -0.4 | 332 5 2.2 -4.2 2 973 305 185 7 0.6 7.0 | 230 5 3.7 3.2 3 941 610 175 11 -1.0 11.0 | 197 7 2.2 7.1 4 925 757 170 10 -1.7 9.8 | 193 6 1.4 6.0 5 908 914 170 6 -1.0 5.9 | 225 3 2.1 2.1 6 850 1494 135 4 -2.8 2.8 | 343 1 0.3 -1.0 7 847 1524 135 4 -2.8 2.8 | 343 1 0.3 -1.0 8 788 2134 105 6 -5.8 1.6 | 50 3 -2.7 -2.3 9 708 3048 105 6 -5.8 1.6 | 50 3 -2.7 -2.3 10 700 3144 110 6 -5.6 2.1 | 55 3 -2.5 -1.8 11 657 3658 125 8 -6.6 4.6 | 103 4 -3.4 0.8 12 588 4572 80 5 -4.9 -0.9 | 21 5 -1.8 -4.7 13 566 4877 55 6 -4.9 -3.4 | 14 7 -1.8 -7.3 14 525 5486 70 10 -9.4 -3.4 | 41 10 -6.3 -7.2 15 500 5890 85 8 -8.0 -0.7 | 47 7 -4.8 -4.5 16 487 6096 85 8 -8.0 -0.7 | 47 7 -4.8 -4.5 17 400 7620 95 11 -11.0 1.0 | 70 8 -7.8 -2.9 18 400 7620 95 12 -12.0 1.0 | 73 9 -8.8 -2.8 19 326 9144 95 17 -16.9 1.5 | 80 14 -13.8 -2.3 20 300 9750 75 20 -19.3 -5.2 | 61 19 -16.2 -9.0 21 263 10668 75 17 -16.4 -4.4 | 58 16 -13.3 -8.2 22 250 11040 80 13 -12.8 -2.3 | 58 11 -9.7 -6.1 23 211 12192 60 21 -18.2 -10.5 | 46 21 -15.1 -14.3 24 200 12540 60 20 -17.3 -10.0 | 46 20 -14.2 -13.8 25 166 13716 50 22 -16.9 -14.1 | 37 23 -13.7 -18.0 26 150 14350 70 22 -20.7 -7.5 | 57 21 -17.5 -11.3 27 129 15240 60 19 -16.5 -9.5 | 45 19 -13.3 -13.3 28 104 16459 110 29 -27.3 9.9 | 104 25 -24.1 6.1 29 100 16710 100 34 -33.5 5.9 | 94 30 -30.3 2.1 30 97 16881 100 35 -34.5 6.1 | 94 31 -31.3 2.3 31 76 18288 65 30 -27.2 -12.7 | 56 29 -24.1 -16.5 32 70 18720 80 36 -35.5 -6.3 | 73 34 -32.3 -10.1 33 58 19812 150 15 -7.5 13.0 | 155 10 -4.4 9.2 34 50 20700 60 17 -14.7 -8.5 | 43 17 -11.6 -12.3 35 44 21336 95 21 -20.9 1.8 | 84 18 -17.8 -2.0 36 38 21946 135 18 -12.7 12.7 | 133 13 -9.6 8.9 Wind Parameters Mean winds (0-6000m): 110.6 at 6.6 knts Storm direction: 140.6 at 4.9 knts Shear (0-3000m) pos: 2.2 neg: 1.7 tot: 3.9 10-3/s Storm rel Dir Shear (0-3000m): 54.3 deg Storm rel helicity (0-3000m) pos: 3.5 neg: -8.3 tot: -4.8 m^2/s^2 ave: -1.6 10^-3 m/s^2 rel: -0.17 Storm rel vorticity (0-3000m) horiz: 5.3 stream: -0.9 10^-3/s Energy-Hel index: 0.03 Bulk Rich Number: 261.90 Bulk Shear: 5.98 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 ------------------------------------------------------------------------------- 500 177 6 239 3| 13.3 0.0 13.3| 0.3 -5.6 -5.3 -10.6 -0.53| 17.6 -9.3 1000 174 7 215 4| 6.6 2.2 8.8| 2.6 -8.3 -5.6 -5.6 -0.34| 12.5 -4.3 1500 169 6 217 3| 4.4 2.5 6.9| 2.9 -8.3 -5.3 -3.5 -0.25| 9.4 -2.3 2000 159 6 210 2| 3.3 2.3 5.6| 3.5 -8.3 -4.8 -2.4 -0.18| 7.7 -1.4 2500 148 6 179 1| 2.7 2.0 4.7| 3.5 -8.3 -4.8 -1.9 -0.17| 6.3 -1.1 3000 140 6 136 1| 2.2 1.7 3.9| 3.5 -8.3 -4.8 -1.6 -0.17| 5.3 -0.9 4000 132 6 105 2| 1.9 1.4 3.4| 5.7 -10.3 -4.6 -1.1 -0.13| 4.6 -0.6 5000 123 6 78 2| 1.5 1.7 3.2| 7.0 -15.1 -8.1 -1.6 -0.19| 4.4 -0.8 6000 111 7 64 3| 1.5 1.4 2.9| 16.3 -15.1 1.2 0.2 -0.08| 4.2 -0.3 Wrote GIF file: /home/apache/climate/data/raob//VTBC/skewt/VTBC.skewt.20250516.12.gif