UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025050312.upa.cvt Date: 1200Z 3 MAY 25 Searching for VTBC... Searching the city database file for: VTBC ... Date:1200Z 3 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 1008 4 25.0 24.0 94 1.0 24.3 0 0 297.5 300.9 297.1 352.5 18.96 1 1000 75 24.8 24.3 97 0.5 24.5 125 3 298.0 301.5 297.6 354.6 19.47 2 925 761 23.2 20.7 86 2.5 21.4 95 5 303.0 306.1 297.3 353.0 16.84 3 850 1498 21.2 13.2 60 8.0 15.9 75 10 308.4 310.5 295.0 342.6 11.29 4 841 1590 21.0 13.0 60 8.0 15.7 72 10 309.1 311.2 295.1 343.3 11.26 5 700 3153 11.0 5.0 66 6.0 7.4 80 11 314.7 316.2 294.1 339.2 7.84 6 578 4723 0.6 -0.1 95 0.7 0.2 142 14 320.2 321.5 294.7 341.4 6.59 7 561 4963 0.0 -0.4 97 0.4 -0.2 144 21 322.3 323.6 295.2 343.7 6.64 8 513 5677 -3.1 -5.3 85 2.2 -4.2 152 21 326.9 327.9 295.2 343.6 5.03 9 500 5880 -4.5 -6.1 89 1.6 -5.3 170 19 327.6 328.5 295.2 343.7 4.86 10 450 6705 -9.1 -9.7 95 0.6 -9.4 178 15 331.8 332.6 295.7 345.7 4.07 11 400 7610 -13.9 -15.4 88 1.5 -14.5 175 9 336.9 337.5 296.0 347.1 2.89 12 347 8677 -20.5 -22.6 83 2.1 -21.1 186 16 342.0 342.3 296.3 348.5 1.80 13 300 9740 -28.1 -30.7 78 2.6 -28.6 195 13 345.8 346.0 296.5 349.5 0.99 14 282 10180 -31.5 -34.1 78 2.6 -31.9 188 9 347.1 347.2 296.6 350.0 0.76 15 250 11020 -38.3 -41.1 75 2.8 -38.6 210 3 349.1 349.2 296.8 350.8 0.42 16 200 12510 -51.1 -56.1 55 5.0 -51.3 145 14 351.8 351.9 297.1 352.3 0.10 17 182 13115 -56.7 -60.9 59 4.2 -56.8 147 17 352.4 352.4 297.2 352.6 0.06 18 150 14310 -67.1 -73.1 42 6.0 -67.1 150 22 354.5 354.5 297.6 354.6 0.01 19 121 15580 -76.7 -81.7 45 5.0 -76.7 160 18 359.4 359.4 298.6 359.4 0.00 20 116 15824 -75.5 -81.5 38 6.0 -75.5 175 15 366.0 366.0 299.8 366.0 0.00 21 100 16670 -82.3 -86.2 51 3.9 -82.3 360 4 368.7 368.7 300.4 368.7 0.00 22 95 16956 -83.9 -87.8 50 3.9 -83.9 27 9 371.0 371.0 300.8 371.0 0.00 23 86 17510 -82.3 -86.5 48 4.2 -82.3 80 19 385.0 385.0 303.1 385.0 0.00 TRP WND Sounding variables and indices 1000-500 mb thick: 5805.00 m Freezing level: 561.00 mb = 4963.16 m = 16283.12 ft Wetbulb zero: 569.89 mb = 4836.75 m = 15868.41 ft Precipitable water: 2.36 inches Sfc-500 mean rel hum: 78.48 % Est. max temperature: 35.31 C = 95.56 F Sfc-Lift cond lev (LCL): 993.89 mb = 128.97 m = 423.11 ft T: 24.67 C 700-500 lapse rate: 5.68 C/km ThetaE index: 11.99 C Layer 925.0- 841.0 mb Conv cond level (CCL): 822.00 mb = 1784.90 m = 5855.89 ft Mean mixing ratio: 17.88 g/kg Conv temperature: 37.35 C = 99.23 F Cap Strength: 2.82 C Lifted Index: -2.76 C Risk: Severe thunderstorms possible Lifted Index @300 mb: -1.58 C Lifted Index @700 mb: -0.50 C Showalter Index: 1.22 C Risk: Showers probable Total Totals Index: 43.40 C Risk: None Vertical Totals Index: 25.70 C Cross Totals Index: 17.70 C K Index: 32.90 Risk: 60-80 % chance of thunderstorms Sweat Index: 197.40 Risk: None Energy Index: 0.20 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 732.21 J/kg Max Up Vert Vel: 38.27 m/s Conv Inhibition (B-): 126.87 J/kg Cap Strength: 2.77 C Lift Cond Lev (LCL): 933.99 mb = 675.90 m = 2217.48 ft Lev Free Conv (LFC): 718.99 mb = 2925.06 m = 9596.55 ft Equ Level (EL): 168.99 mb = 13573.28 m = 44531.21 ft B at Equ Level: 731.71 J/kg Wind level data Storm motion: 139 at 8 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 1008 4 0 0 -0.0 -0.0 | 319 8 5.5 -6.4 1 1000 75 125 3 -2.5 1.7 | 327 6 3.1 -4.7 2 974 305 115 8 -7.3 3.4 | 30 3 -1.7 -3.0 3 941 610 100 6 -5.9 1.0 | 4 5 -0.4 -5.4 4 925 761 95 5 -5.0 0.4 | 355 6 0.5 -6.0 5 909 914 85 6 -6.0 -0.5 | 4 7 -0.5 -6.9 6 850 1498 75 10 -9.7 -2.6 | 25 10 -4.1 -9.0 7 847 1524 75 10 -9.7 -2.6 | 25 10 -4.1 -9.0 8 789 2134 50 13 -10.0 -8.4 | 17 15 -4.4 -14.8 9 709 3048 70 11 -10.3 -3.8 | 25 11 -4.8 -10.2 10 700 3153 80 11 -10.8 -1.9 | 33 10 -5.3 -8.3 11 658 3658 80 4 -3.9 -0.7 | 347 7 1.6 -7.1 12 588 4572 140 9 -5.8 6.9 | 152 1 -0.3 0.5 13 566 4877 145 21 -12.0 17.2 | 149 13 -6.5 10.8 14 525 5486 135 22 -15.6 15.6 | 132 14 -10.0 9.2 15 500 5880 170 19 -3.3 18.7 | 190 13 2.2 12.3 16 486 6096 180 19 0.0 19.0 | 204 14 5.5 12.6 17 400 7610 175 9 -0.8 9.0 | 242 5 4.7 2.6 18 399 7620 165 10 -2.6 9.7 | 222 4 2.9 3.3 19 325 9144 195 19 4.9 18.4 | 221 16 10.4 12.0 20 300 9740 195 13 3.4 12.6 | 235 11 8.9 6.2 21 263 10668 180 4 0.0 4.0 | 293 6 5.5 -2.4 22 250 11020 210 3 1.5 2.6 | 298 8 7.0 -3.8 23 210 12192 170 13 -2.3 12.8 | 207 7 3.3 6.4 24 200 12510 145 14 -8.0 11.5 | 154 6 -2.5 5.1 25 165 13716 150 20 -10.0 17.3 | 158 12 -4.5 10.9 26 150 14310 150 22 -11.0 19.1 | 157 14 -5.5 12.7 27 128 15240 140 21 -13.5 16.1 | 141 13 -8.0 9.7 28 104 16459 215 8 4.6 6.6 | 269 10 10.1 0.2 29 100 16670 360 4 -0.0 -4.0 | 332 12 5.5 -10.4 30 83 17678 100 23 -22.7 4.0 | 82 17 -17.1 -2.4 Wind Parameters Mean winds (0-6000m): 109.2 at 11.3 knts Storm direction: 139.2 at 8.5 knts Shear (0-3000m) pos: 1.4 neg: 1.6 tot: 3.0 10-3/s Storm rel Dir Shear (0-3000m): 65.8 deg Storm rel helicity (0-3000m) pos: 19.9 neg: -9.0 tot: 10.9 m^2/s^2 ave: 3.6 10^-3 m/s^2 rel: 0.24 Storm rel vorticity (0-3000m) horiz: 4.6 stream: 1.1 10^-3/s Energy-Hel index: 0.06 Bulk Rich Number: 173.83 Bulk Shear: 4.21 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 ------------------------------------------------------------------------------- 500 114 6 355 4| 6.9 0.0 6.9| 6.0 -1.4 4.6 9.1 0.40| 10.2 4.1 1000 104 6 1 5| 3.4 1.3 4.7| 8.2 -3.2 5.0 5.0 0.29| 7.0 2.0 1500 93 7 10 6| 2.3 1.8 4.1| 13.4 -3.2 10.2 6.8 0.37| 5.9 2.2 2000 82 8 16 8| 1.7 2.5 4.2| 13.4 -7.2 6.2 3.1 0.23| 5.6 1.3 2500 74 9 18 9| 1.4 2.0 3.4| 16.6 -9.0 7.6 3.0 0.22| 5.0 1.1 3000 71 9 19 10| 1.4 1.6 3.0| 19.9 -9.0 10.9 3.6 0.24| 4.6 1.1 4000 73 9 18 9| 1.3 1.2 2.6| 24.5 -20.6 4.0 1.0 0.08| 4.9 0.4 5000 89 9 30 7| 2.8 1.0 3.8| 26.8 -22.6 4.2 0.8 0.12| 5.8 0.7 6000 109 11 62 6| 2.5 1.0 3.5| 73.4 -31.2 42.3 7.0 0.25| 6.3 1.6 Wrote GIF file: /home/apache/climate/data/raob//VTBC/skewt/VTBC.skewt.20250503.12.gif