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 SBTT... Searching the city database file for: SBTT ... Date:1200Z 18 APR 25 Station: SBTT WMO ident: 82411 Latitude: -4.25 Longitude: -69.94 Elevation: 85.00 ------------------------------------------------------------------------------- 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 85 23.0 23.0 100 0.0 23.0 110 2 295.9 299.1 296.1 347.5 17.91 1 1000 109 23.4 22.9 97 0.5 23.0 110 2 296.5 299.8 296.2 348.1 17.85 2 977 313 22.2 22.2 100 0.0 22.2 273 5 297.3 300.5 296.2 348.0 17.50 3 967 403 24.8 18.8 69 6.0 20.6 304 4 300.8 303.4 295.0 342.7 14.26 4 925 794 23.2 19.8 81 3.4 20.8 30 7 303.0 306.0 296.7 350.2 15.91 5 899 1043 21.4 20.5 95 0.9 20.8 41 9 303.7 306.8 297.6 354.6 17.13 6 850 1529 19.4 14.8 75 4.6 16.3 70 15 306.5 308.8 295.3 344.2 12.55 7 731 2813 13.0 1.0 44 12.0 6.3 67 17 313.0 314.1 291.9 330.7 5.63 8 702 3152 9.8 5.1 73 4.7 7.0 79 15 313.1 314.6 293.7 337.6 7.87 9 700 3176 9.6 4.7 71 4.9 6.7 80 15 313.1 314.6 293.6 337.0 7.67 10 627 4082 3.6 -0.2 76 3.8 1.5 108 19 316.3 317.4 293.2 335.4 6.02 11 614 4253 3.6 -0.5 75 4.1 1.4 110 20 318.2 319.3 293.7 337.4 6.02 12 608 4332 3.8 -11.2 32 15.0 -2.6 108 20 319.3 319.8 291.2 328.1 2.67 13 589 4590 2.4 -5.6 55 8.0 -1.5 100 22 320.6 321.4 292.9 334.5 4.28 14 542 5259 -1.3 -13.3 40 12.0 -6.2 90 23 323.9 324.4 292.4 332.4 2.53 15 525 5513 -2.9 -8.9 63 6.0 -5.6 90 22 324.9 325.7 293.7 337.3 3.72 16 517 5635 -3.3 -12.3 50 9.0 -7.1 90 22 325.9 326.5 293.2 335.6 2.88 17 514 5681 -3.1 -20.1 26 17.0 -8.9 90 22 326.7 327.0 292.2 331.9 1.51 18 506 5806 -3.5 -22.5 21 19.0 -9.7 90 22 327.7 327.9 292.3 332.0 1.24 19 500 5900 -4.1 -17.1 36 13.0 -8.9 90 22 328.0 328.4 293.0 335.0 2.00 20 491 6043 -5.3 -18.3 35 13.0 -9.9 94 21 328.3 328.6 293.0 334.7 1.84 21 485 6139 -6.3 -12.3 62 6.0 -8.8 95 21 328.2 328.8 294.0 338.6 3.07 22 474 6318 -6.5 -25.5 21 19.0 -12.1 95 22 330.1 330.3 292.7 333.8 1.01 23 455 6635 -8.5 -21.5 34 13.0 -12.8 95 23 331.5 331.8 293.5 336.9 1.51 24 450 6721 -8.9 -28.9 18 20.0 -14.2 95 24 332.0 332.2 293.0 334.9 0.78 25 418 7286 -13.3 -26.3 33 13.0 -16.9 95 26 333.5 333.7 293.7 337.4 1.07 26 400 7620 -14.5 -33.5 18 19.0 -18.7 95 28 336.1 336.3 293.9 338.3 0.57 27 372 8166 -18.1 -46.1 7 28.0 -22.2 96 29 338.4 338.4 294.1 339.1 0.16 28 316 9366 -25.5 -46.5 12 21.0 -28.2 81 25 344.3 344.3 295.5 345.1 0.19 29 300 9740 -28.7 -49.7 11 21.0 -30.9 85 25 344.9 345.0 295.6 345.5 0.14 30 272 10429 -34.7 -55.7 10 21.0 -36.2 93 18 346.0 346.0 295.8 346.3 0.07 31 261 10715 -36.9 -43.9 48 7.0 -37.6 96 15 346.9 347.0 296.2 348.1 0.30 32 254 10902 -38.5 -50.5 27 12.0 -39.4 99 13 347.2 347.3 296.1 347.9 0.15 33 250 11010 -39.5 -47.5 42 8.0 -40.2 100 12 347.3 347.4 296.3 348.2 0.21 34 249 11037 -39.9 -47.9 42 8.0 -40.5 100 12 347.1 347.2 296.2 348.0 0.20 35 247 11093 -40.1 -46.1 53 6.0 -40.6 101 12 347.6 347.7 296.3 348.7 0.25 36 226 11694 -45.3 -49.1 65 3.8 -45.6 108 10 348.6 348.7 296.5 349.4 0.19 37 200 12500 -52.1 -56.9 56 4.8 -52.2 105 15 350.3 350.3 296.8 350.6 0.09 38 187 12931 -55.9 -60.9 53 5.0 -56.0 110 18 350.9 350.9 296.9 351.2 0.06 39 174 13386 -59.9 -63.6 62 3.7 -60.0 115 22 351.6 351.6 297.0 351.8 0.04 40 168 13604 -61.3 -65.9 54 4.6 -61.4 109 24 352.8 352.9 297.3 353.0 0.03 41 162 13829 -62.1 -76.1 14 14.0 -62.2 102 23 355.2 355.2 297.7 355.2 0.01 42 152 14220 -65.9 -70.9 50 5.0 -66.0 106 18 355.2 355.2 297.8 355.3 0.02 43 150 14300 -66.5 -71.5 49 5.0 -66.5 110 18 355.5 355.5 297.8 355.6 0.02 44 138 14797 -71.1 -75.5 52 4.4 -71.1 111 16 356.0 356.0 297.9 356.0 0.01 45 130 15147 -73.9 -78.9 46 5.0 -73.9 103 15 357.1 357.1 298.1 357.1 0.01 46 100 16640 -82.9 -89.9 29 7.0 -82.9 50 27 367.6 367.6 300.1 367.6 0.00 47 96 16867 -84.3 -90.3 34 6.0 -84.3 55 28 369.1 369.1 300.4 369.1 0.00 48 89 17293 -79.5 -87.5 25 8.0 -79.5 62 19 386.8 386.8 303.3 386.8 0.00 49 80 17892 -83.9 -89.9 34 6.0 -83.9 206 18 389.7 389.7 303.8 389.7 0.00 50 73 18406 -79.9 -89.9 17 10.0 -79.9 89 7 408.5 408.5 306.3 408.5 0.00 51 70 18650 -69.9 -87.9 6 18.0 -70.0 275 25 434.8 434.8 309.3 434.9 0.00 52 57 19859 -73.3 -89.3 7 16.0 -73.4 287 33 453.4 453.4 311.2 453.5 0.00 53 50 20630 -70.3 -89.3 5 19.0 -70.5 265 32 477.8 477.8 313.2 477.8 0.00 54 44 21393 -67.9 -89.9 3 22.0 -68.1 226 19 501.5 501.5 315.1 501.5 0.00 55 41 21825 -61.3 -88.3 2 27.0 -61.9 234 6 528.2 528.2 316.8 528.2 0.00 56 37 22466 -58.3 -86.3 2 28.0 -59.2 223 3 551.6 551.6 318.2 551.6 0.01 57 34 22994 -61.3 -87.3 2 26.0 -62.0 201 3 557.2 557.2 318.5 557.3 0.01 58 32 23373 -57.3 -86.3 1 29.0 -58.5 186 2 577.7 577.7 319.6 577.7 0.01 59 30 23780 -58.5 -85.5 2 27.0 -59.6 125 6 585.2 585.2 319.9 585.2 0.01 60 25 24923 -59.3 -86.3 2 27.0 -60.4 81 15 614.2 614.2 321.2 614.2 0.01 61 23 25451 -54.1 -84.1 1 30.0 -56.2 57 22 644.3 644.3 322.4 644.4 0.01 62 20 26340 -57.3 -85.3 2 28.0 -59.0 105 28 660.8 660.8 323.1 660.9 0.01 63 18 27014 -52.1 -83.1 1 31.0 -55.2 107 31 697.4 697.4 324.4 697.6 0.02 TRP 96 16867 -84.3 -90.3 34 6.0 -84.3 55 28 369.1 369.1 300.4 369.1 0.00 WND Sounding variables and indices 1000-500 mb thick: 5791.00 m Freezing level: 558.51 mb = 5024.28 m = 16483.64 ft Wetbulb zero: 611.94 mb = 4279.89 m = 14041.47 ft Precipitable water: 1.90 inches Sfc-500 mean rel hum: 64.02 % Est. max temperature: 33.40 C = 92.13 F Sfc-Lift cond lev (LCL): 1003.42 mb = 85.00 m = 278.87 ft T: 23.00 C 700-500 lapse rate: 5.03 C/km ThetaE index: 23.93 C Layer 850.0- 702.0 mb Conv cond level (CCL): 826.99 mb = 1762.70 m = 5783.08 ft Mean mixing ratio: 16.12 g/kg Conv temperature: 34.77 C = 94.58 F Cap Strength: 2.55 C Lifted Index: -0.46 C Risk: Thunderstorms probable Lifted Index @300 mb: 0.75 C Lifted Index @700 mb: -0.44 C Showalter Index: 1.04 C Risk: Showers probable Total Totals Index: 42.40 C Risk: None Vertical Totals Index: 23.50 C Cross Totals Index: 18.90 C K Index: 33.40 Risk: 60-80 % chance of thunderstorms Sweat Index: 229.60 Risk: None Energy Index: -1.77 Risk: Scattered severe thunderstorms Parcel Indices Parcel: using 100 mb layer CAPE (B+): 211.24 J/kg Max Up Vert Vel: 20.55 m/s Conv Inhibition (B-): 148.60 J/kg Cap Strength: 2.55 C Lift Cond Lev (LCL): 913.44 mb = 903.79 m = 2965.15 ft Lev Free Conv (LFC): 708.44 mb = 3075.79 m = 10091.06 ft Equ Level (EL): 348.44 mb = 8646.82 m = 28368.49 ft B at Equ Level: 210.74 J/kg Max Parcel Lev (MPL): 178.44 mb = 13226.76 m = 43394.36 ft Wind level data Storm motion: 115 at 12 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 85 110 2 -1.9 0.7 | 296 10 9.3 -4.5 1 1000 109 110 2 -1.9 0.7 | 296 10 9.3 -4.5 2 978 305 270 5 5.0 -0.0 | 288 17 16.2 -5.1 3 945 610 15 2 -0.5 -1.9 | 304 13 10.7 -7.1 4 925 794 30 7 -3.5 -6.1 | 326 14 7.7 -11.2 5 912 914 35 8 -4.6 -6.6 | 331 13 6.6 -11.7 6 850 1524 65 14 -12.7 -5.9 | 8 11 -1.5 -11.1 7 850 1529 70 15 -14.1 -5.1 | 16 11 -2.9 -10.3 8 792 2134 70 18 -16.9 -6.2 | 27 13 -5.7 -11.3 9 764 2438 70 19 -17.9 -6.5 | 30 13 -6.7 -11.6 10 737 2743 65 17 -15.4 -7.2 | 19 13 -4.2 -12.3 11 700 3176 80 15 -14.8 -2.6 | 25 9 -3.6 -7.7 12 660 3658 105 17 -16.4 4.4 | 82 5 -5.2 -0.7 13 612 4267 110 20 -18.8 6.8 | 103 8 -7.6 1.7 14 567 4877 90 23 -23.0 0.0 | 66 13 -11.8 -5.1 15 500 5900 90 22 -22.0 0.0 | 65 12 -10.8 -5.1 16 487 6096 95 21 -20.9 1.8 | 71 10 -9.7 -3.3 17 400 7620 95 28 -27.9 2.4 | 81 17 -16.7 -2.7 18 400 7620 105 30 -29.0 7.8 | 98 18 -17.8 2.6 19 368 8230 95 29 -28.9 2.5 | 82 18 -17.7 -2.6 20 312 9449 80 25 -24.6 -4.3 | 55 16 -13.4 -9.5 21 300 9740 85 25 -24.9 -2.2 | 62 16 -13.7 -7.3 22 250 11010 100 12 -11.8 2.1 | 12 3 -0.6 -3.1 23 219 11887 110 10 -9.4 3.4 | 314 2 1.8 -1.7 24 200 12500 105 15 -14.5 3.9 | 69 4 -3.3 -1.3 25 173 13411 115 22 -19.9 9.3 | 115 10 -8.8 4.2 26 165 13716 105 25 -24.1 6.5 | 96 13 -13.0 1.3 27 157 14021 95 18 -17.9 1.6 | 62 8 -6.8 -3.6 28 150 14300 110 18 -16.9 6.2 | 100 6 -5.7 1.0 29 142 14630 115 17 -15.4 7.2 | 116 5 -4.2 2.0 30 115 15850 85 11 -11.0 -1.0 | 358 6 0.2 -6.1 31 100 16640 50 27 -20.7 -17.4 | 23 24 -9.5 -22.5 32 98 16764 50 26 -19.9 -16.7 | 22 24 -8.7 -21.9 33 96 16867 55 28 -22.9 -16.1 | 29 24 -11.8 -21.2 34 93 17069 55 29 -23.8 -16.6 | 30 25 -12.6 -21.8 35 88 17374 65 15 -13.6 -6.3 | 12 12 -2.4 -11.5 36 83 17678 220 16 10.3 12.3 | 252 23 21.5 7.1 37 79 17983 200 19 6.5 17.9 | 234 22 17.7 12.7 38 75 18288 155 11 -4.6 10.0 | 234 8 6.5 4.8 39 71 18593 355 1 0.1 -1.0 | 299 13 11.3 -6.1 40 70 18650 275 25 24.9 -2.2 | 281 37 36.1 -7.3 41 67 18898 275 25 24.9 -2.2 | 281 37 36.1 -7.3 42 64 19202 300 32 27.7 -16.0 | 299 44 38.9 -21.1 43 61 19507 300 38 32.9 -19.0 | 299 50 44.1 -24.1 44 52 20422 265 25 24.9 2.2 | 275 36 36.1 -3.0 45 50 20630 265 32 31.9 2.8 | 273 43 43.1 -2.4 46 47 21031 255 32 30.9 8.3 | 266 42 42.1 3.1 47 42 21641 210 12 6.0 10.4 | 253 18 17.2 5.2 48 40 21946 245 4 3.6 1.7 | 283 15 14.8 -3.5 49 30 23774 170 2 -0.3 2.0 | 286 11 10.8 -3.2 50 30 23780 125 6 -4.9 3.4 | 285 6 6.3 -1.7 51 27 24384 70 12 -11.3 -4.1 | 1 9 -0.1 -9.2 52 26 24689 95 11 -11.0 1.0 | 357 4 0.2 -4.2 53 24 25298 60 20 -17.3 -10.0 | 22 16 -6.1 -15.1 54 22 25603 55 24 -19.7 -13.8 | 24 21 -8.5 -18.9 55 21 25908 95 24 -23.9 2.1 | 77 13 -12.7 -3.1 56 20 26340 105 28 -27.0 7.2 | 98 16 -15.9 2.1 57 19 26518 110 30 -28.2 10.3 | 107 18 -17.0 5.1 58 16 27127 100 33 -32.5 5.7 | 92 21 -21.3 0.6 Wind Parameters Mean winds (0-6000m): 84.7 at 16.4 knts Storm direction: 114.7 at 12.3 knts Shear (0-3000m) pos: 2.1 neg: 0.8 tot: 2.9 10-3/s Storm rel Dir Shear (0-3000m): 88.3 deg Storm rel helicity (0-3000m) pos: 90.0 neg: -15.5 tot: 74.5 m^2/s^2 ave: 24.8 10^-3 m/s^2 rel: 0.50 Storm rel vorticity (0-3000m) horiz: 7.1 stream: 3.6 10^-3/s Energy-Hel index: 0.11 Bulk Rich Number: 4.10 Bulk Shear: 51.51 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 ------------------------------------------------------------------------------- 500 284 3 292 16| 0.0 3.4 3.4| 26.2 -7.7 18.5 37.0 0.23| 16.2 3.7 1000 17 5 316 14| 4.1 1.7 5.8| 55.2 -7.7 47.5 47.5 0.49| 12.4 6.1 1500 46 7 331 12| 4.9 1.1 6.1| 79.4 -7.7 71.7 47.8 0.61| 11.0 6.7 2000 58 10 344 11| 3.7 1.0 4.7| 85.1 -7.7 77.4 38.7 0.62| 8.9 5.5 2500 62 12 355 11| 3.0 0.9 3.9| 87.6 -11.6 75.9 30.4 0.57| 7.6 4.3 3000 64 12 360 11| 2.1 0.8 2.9| 90.0 -15.5 74.5 24.8 0.50| 7.1 3.6 4000 75 14 13 9| 2.4 0.6 3.0|104.2 -15.5 88.6 22.2 0.56| 6.7 3.7 5000 83 15 29 8| 1.9 1.2 3.1|105.1 -32.2 72.9 14.6 0.38| 6.3 2.4 6000 85 16 38 8| 1.6 1.0 2.6|108.6 -33.3 75.4 12.6 0.38| 5.5 2.1 Wrote GIF file: /home/apache/climate/data/raob//SBTT/skewt/SBTT.skewt.20250418.12.gif