UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025120812.upa.cvt Date: 1200Z 8 DEC 25 Searching for SBTT... Searching the city database file for: SBTT ... Date:1200Z 8 DEC 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 1001 85 21.0 19.0 88 2.0 19.6 140 2 294.1 296.6 292.7 333.9 13.94 1 1000 87 21.0 19.1 89 1.9 19.7 20 3 294.1 296.7 292.9 334.3 14.05 2 994 140 22.6 21.2 92 1.4 21.6 25 6 296.3 299.2 295.0 342.8 16.15 3 982 246 22.0 19.9 88 2.1 20.5 35 13 296.7 299.4 294.4 340.2 15.06 4 971 345 24.8 20.5 77 4.3 21.8 38 18 300.5 303.4 295.9 346.9 15.82 5 951 528 25.6 20.6 74 5.0 22.0 29 21 303.1 306.1 296.9 351.3 16.27 6 925 773 24.4 18.4 69 6.0 20.2 20 21 304.3 307.0 296.1 347.6 14.55 7 850 1509 20.0 15.6 76 4.4 17.0 5 16 307.1 309.6 296.0 347.0 13.23 8 725 2865 12.0 6.0 67 6.0 8.4 296 17 312.6 314.2 293.8 337.8 8.12 9 700 3159 10.6 -2.4 40 13.0 3.9 285 19 314.2 315.1 291.3 328.8 4.58 10 647 3809 6.8 -21.2 11 28.0 -2.9 273 26 317.1 317.3 289.0 320.8 1.09 11 613 4249 3.4 -8.6 41 12.0 -2.0 261 28 318.1 318.7 291.3 328.7 3.26 12 586 4613 2.0 -26.0 10 28.0 -6.5 258 28 320.6 320.7 289.8 323.4 0.78 13 561 4962 -0.5 -29.5 9 29.0 -8.4 256 29 321.7 321.8 289.9 323.8 0.59 14 547 5163 -2.3 -11.3 50 9.0 -6.1 254 29 321.9 322.4 292.2 331.7 2.95 15 531 5398 -4.1 -11.1 58 7.0 -7.0 253 29 322.4 323.1 292.4 332.7 3.09 16 507 5761 -5.9 -13.9 53 8.0 -9.0 250 30 324.6 325.1 292.6 333.3 2.58 17 500 5870 -5.9 -18.9 35 13.0 -10.4 250 30 325.8 326.2 292.2 331.8 1.72 18 486 6092 -7.5 -28.5 17 21.0 -13.0 255 27 326.5 326.7 291.5 329.2 0.75 19 475 6271 -7.9 -17.9 44 10.0 -11.5 261 26 328.2 328.6 293.0 335.0 1.97 20 451 6673 -10.1 -16.1 61 6.0 -12.3 274 23 330.3 330.8 294.0 338.7 2.41 21 447 6742 -9.7 -15.7 62 6.0 -12.0 272 22 331.7 332.2 294.4 340.4 2.52 22 400 7590 -16.3 -19.7 75 3.4 -17.4 290 13 333.8 334.2 294.6 340.9 2.01 23 340 8791 -25.5 -26.0 96 0.5 -25.6 237 10 337.2 337.4 294.8 342.1 1.35 24 332 8964 -25.5 -31.5 57 6.0 -26.7 214 11 339.5 339.6 294.9 342.6 0.83 25 300 9690 -31.9 -33.8 83 1.9 -32.2 70 6 340.4 340.6 295.1 343.2 0.73 26 299 9714 -32.1 -33.9 84 1.8 -32.4 69 6 340.5 340.6 295.1 343.2 0.73 27 283 10102 -34.1 -43.1 40 9.0 -35.1 49 11 343.0 343.0 295.3 344.2 0.30 28 250 10960 -41.9 -44.6 75 2.7 -42.1 105 19 343.8 343.8 295.5 344.9 0.29 29 249 10987 -42.1 -44.5 77 2.4 -42.3 100 16 343.9 343.9 295.5 345.0 0.29 30 235 11373 -45.5 -50.4 58 4.9 -45.8 113 17 344.5 344.5 295.6 345.1 0.16 31 226 11631 -46.7 -61.7 17 15.0 -47.2 119 18 346.5 346.5 295.9 346.7 0.04 32 219 11838 -46.9 -65.9 10 19.0 -47.5 116 23 349.3 349.3 296.5 349.4 0.02 33 206 12239 -50.1 -74.1 4 24.0 -50.5 108 34 350.5 350.5 296.7 350.5 0.01 34 200 12430 -51.9 -74.9 5 23.0 -52.3 105 39 350.6 350.6 296.8 350.6 0.01 35 183 13000 -56.7 -77.7 5 21.0 -56.9 105 45 351.8 351.8 297.0 351.8 0.01 36 150 14240 -64.5 -78.5 13 14.0 -64.6 120 1 359.0 359.0 298.5 359.0 0.01 37 130 15100 -72.1 -80.1 29 8.0 -72.1 285 16 360.3 360.3 298.8 360.4 0.01 38 101 16554 -81.1 -87.1 36 6.0 -81.1 302 30 370.0 370.0 300.5 370.0 0.00 39 100 16610 -81.3 -87.3 35 6.0 -81.3 300 30 370.6 370.6 300.7 370.7 0.00 40 87 17383 -84.3 -90.3 34 6.0 -84.3 155 5 379.7 379.7 302.2 379.7 0.00 41 70 18600 -78.7 -87.7 22 9.0 -78.7 225 6 416.0 416.0 307.2 416.0 0.00 42 50 20530 -74.9 -89.9 8 15.0 -75.0 60 27 467.0 467.0 312.4 467.0 0.00 43 49 20647 -74.9 -90.9 7 16.0 -75.0 60 27 469.7 469.7 312.6 469.7 0.00 44 43 21421 -67.3 -90.3 2 23.0 -67.5 103 45 506.3 506.3 315.4 506.3 0.00 45 37 22339 -62.1 -90.1 1 28.0 -62.7 85 56 541.9 541.9 317.6 541.9 0.00 46 31 23428 -63.9 -90.9 1 27.0 -64.4 94 53 565.1 565.1 318.9 565.1 0.00 47 30 23630 -62.1 -91.1 1 29.0 -62.8 90 56 575.3 575.3 319.5 575.4 0.00 48 22 25575 -52.9 -87.3 1 34.4 -55.4 90 75 656.1 656.1 322.9 656.1 0.01 49 20 26190 -50.1 -86.1 1 36.0 -53.5 85 68 682.8 682.8 323.9 682.9 0.01 50 16 27664 -45.3 -85.3 0 40.0 -51.1 81 57 743.5 743.5 325.7 743.6 0.02 TRP 87 17383 -84.3 -90.3 34 6.0 -84.3 155 5 379.7 379.7 302.2 379.7 0.00 WND 22 25575 -52.9 -87.3 1 34.4 -55.4 90 75 656.1 656.1 322.9 656.1 0.01 Sounding variables and indices 1000-500 mb thick: 5783.00 m Freezing level: 566.00 mb = 4892.27 m = 16050.58 ft Wetbulb zero: 669.69 mb = 3524.33 m = 11562.61 ft Precipitable water: 1.79 inches Sfc-500 mean rel hum: 52.02 % Est. max temperature: 34.00 C = 93.19 F Sfc-Lift cond lev (LCL): 972.30 mb = 332.97 m = 1092.42 ft T: 24.47 C 700-500 lapse rate: 6.09 C/km ThetaE index: 30.50 C Layer 925.0- 613.0 mb Conv cond level (CCL): 797.75 mb = 2049.74 m = 6724.77 ft Mean mixing ratio: 15.26 g/kg Conv temperature: 36.26 C = 97.26 F Cap Strength: 3.82 C Lifted Index: -1.70 C Risk: Thunderstorms probable Lifted Index @300 mb: -1.63 C Lifted Index @700 mb: 0.97 C Showalter Index: -1.82 C Risk: Thunderstorms probable Total Totals Index: 47.40 C Risk: Scattered moderate thunderstorms Vertical Totals Index: 25.90 C Cross Totals Index: 21.50 C K Index: 28.50 Risk: 40-60 % chance of thunderstorms Sweat Index: 249.20 Risk: None Energy Index: -2.95 Risk: Severe Thunderstorms probable Parcel Indices Parcel: using 100 mb layer CAPE (B+): 422.02 J/kg Max Up Vert Vel: 29.05 m/s Conv Inhibition (B-): 215.84 J/kg Cap Strength: 3.82 C Lift Cond Lev (LCL): 890.16 mb = 1107.17 m = 3632.39 ft Lev Free Conv (LFC): 635.16 mb = 3959.29 m = 12989.63 ft Equ Level (EL): 225.16 mb = 11655.67 m = 38239.93 ft B at Equ Level: 409.38 J/kg Max Parcel Lev (MPL): 155.16 mb = 14029.10 m = 46026.68 ft Wind level data Storm motion: 318 at 17 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 1001 85 140 2 -1.3 1.5 | 138 19 -12.4 13.9 1 1000 87 20 3 -1.0 -2.8 | 128 15 -12.2 9.5 2 976 305 40 17 -10.9 -13.0 | 88 22 -22.1 -0.7 3 942 610 25 23 -9.7 -20.8 | 68 23 -20.8 -8.5 4 925 773 20 21 -7.2 -19.7 | 68 20 -18.3 -7.4 5 910 914 15 18 -4.7 -17.4 | 72 17 -15.8 -5.1 6 850 1509 5 16 -1.4 -15.9 | 74 13 -12.5 -3.6 7 819 1829 5 18 -1.6 -17.9 | 66 14 -12.7 -5.6 8 790 2134 340 16 5.5 -15.0 | 64 6 -5.7 -2.7 9 762 2438 320 14 9.0 -10.7 | 127 3 -2.1 1.6 10 709 3048 285 18 17.4 -4.7 | 219 10 6.3 7.7 11 700 3159 285 19 18.4 -4.9 | 224 10 7.2 7.4 12 634 3962 270 28 28.0 -0.0 | 234 21 16.9 12.3 13 610 4267 260 28 27.6 4.9 | 224 24 16.4 17.2 14 505 5791 250 30 28.2 10.3 | 217 28 17.1 22.6 15 500 5870 250 30 28.2 10.3 | 217 28 17.1 22.6 16 486 6096 255 27 26.1 7.0 | 218 24 15.0 19.3 17 449 6706 275 23 22.9 -2.0 | 229 16 11.8 10.3 18 431 7010 245 14 12.7 5.9 | 185 18 1.6 18.2 19 400 7590 290 13 12.2 -4.4 | 188 8 1.1 7.9 20 382 7925 295 11 10.0 -4.6 | 171 8 -1.2 7.7 21 366 8230 340 3 1.0 -2.8 | 133 14 -10.1 9.5 22 337 8839 225 11 7.8 7.8 | 171 20 -3.3 20.1 23 323 9144 195 10 2.6 9.7 | 159 24 -8.5 22.0 24 300 9690 70 6 -5.6 -2.1 | 121 20 -16.8 10.3 25 285 10058 50 11 -8.4 -7.1 | 105 20 -19.6 5.3 26 272 10363 40 15 -9.6 -11.5 | 92 21 -20.8 0.8 27 250 10960 105 19 -18.4 4.9 | 120 34 -29.5 17.2 28 250 10973 100 16 -15.8 2.8 | 119 31 -26.9 15.1 29 227 11582 120 17 -14.7 8.5 | 129 33 -25.8 20.8 30 200 12430 105 39 -37.7 10.1 | 115 54 -48.8 22.4 31 180 13106 105 46 -44.4 11.9 | 114 61 -55.6 24.2 32 150 14240 120 1 -0.9 0.5 | 137 18 -12.0 12.8 33 140 14630 120 1 -0.9 0.5 | 137 18 -12.0 12.8 34 133 14935 280 12 11.8 -2.1 | 184 10 0.7 10.2 35 120 15545 300 31 26.8 -15.5 | 281 16 15.7 -3.2 36 114 15850 295 21 19.0 -8.9 | 246 9 7.9 3.4 37 108 16154 315 30 21.2 -21.2 | 311 13 10.1 -8.9 38 100 16610 300 30 26.0 -15.0 | 280 15 14.9 -2.7 39 97 16764 315 32 22.6 -22.6 | 312 15 11.5 -10.3 40 92 17069 280 17 16.7 -3.0 | 211 11 5.6 9.4 41 87 17374 230 11 8.4 7.1 | 172 20 -2.7 19.4 42 87 17383 155 5 -2.1 4.5 | 142 21 -13.2 16.9 43 83 17678 185 5 0.4 5.0 | 148 20 -10.7 17.3 44 78 17983 80 10 -9.8 -1.7 | 117 23 -21.0 10.6 45 70 18600 225 6 4.2 4.2 | 157 18 -6.9 16.6 46 66 18898 345 1 0.3 -1.0 | 136 16 -10.9 11.4 47 63 19202 195 11 2.8 10.6 | 160 24 -8.3 22.9 48 57 19812 100 20 -19.7 3.5 | 117 35 -30.8 15.8 49 54 20117 75 28 -27.0 -7.2 | 98 39 -38.2 5.1 50 51 20422 50 18 -13.8 -11.6 | 92 25 -24.9 0.8 51 50 20530 60 27 -23.4 -13.5 | 88 35 -34.5 -1.2 52 48 20726 60 27 -23.4 -13.5 | 88 35 -34.5 -1.2 53 46 21031 70 27 -25.4 -9.2 | 95 37 -36.5 3.1 54 44 21336 105 43 -41.5 11.1 | 114 58 -52.7 23.5 55 38 22250 85 58 -57.8 -5.1 | 96 69 -68.9 7.3 56 34 22860 85 47 -46.8 -4.1 | 98 59 -57.9 8.2 57 32 23165 100 50 -49.2 8.7 | 109 64 -60.4 21.0 58 30 23630 90 56 -56.0 0.0 | 100 68 -67.1 12.3 59 29 23774 90 58 -58.0 0.0 | 100 70 -69.1 12.3 60 22 25575 90 75 -75.0 0.0 | 98 87 -86.1 12.3 61 21 25908 90 75 -75.0 0.0 | 98 87 -86.1 12.3 62 20 26190 85 68 -67.7 -5.9 | 95 79 -78.9 6.4 63 17 26822 80 65 -64.0 -11.3 | 91 75 -75.1 1.0 64 13 27737 85 18 -17.9 -1.6 | 110 31 -29.1 10.8 Wind Parameters Mean winds (0-6000m): 287.9 at 22.1 knts Storm direction: 317.9 at 16.6 knts Shear (0-3000m) pos: 0.0 neg: 3.4 tot: 3.4 10-3/s Storm rel Dir Shear (0-3000m): 82.8 deg Storm rel helicity (0-3000m) pos: 16.3 neg: -124.9 tot: -108.7 m^2/s^2 ave: -36.2 10^-3 m/s^2 rel: -0.25 Storm rel vorticity (0-3000m) horiz: 10.4 stream: -2.6 10^-3/s Energy-Hel index: 0.02 Bulk Rich Number: 3.52 Bulk Shear: 119.75 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 34 15 89 20| 0.0 24.1 24.1| 0.0-112.7-112.7 -225.4 -0.90| 26.0-23.5 1000 25 18 79 19| 0.0 9.6 9.6| 6.9-116.6-109.6 -109.6 -0.67| 16.8-11.3 1500 20 17 77 17| 0.0 6.2 6.2| 8.2-118.0-109.8 -73.2 -0.62| 12.2 -7.6 2000 15 17 74 16| 0.0 4.7 4.7| 8.3-124.9-116.7 -58.3 -0.56| 11.1 -6.2 2500 7 17 72 14| 0.0 3.5 3.5| 13.2-124.9-111.7 -44.7 -0.34| 10.8 -3.7 3000 356 17 66 11| 0.0 3.4 3.4| 16.3-124.9-108.7 -36.2 -0.25| 10.4 -2.6 4000 328 19 20 4| 0.0 3.8 3.8| 25.4-134.1-108.7 -27.2 -0.19| 9.5 -1.8 5000 304 21 263 6| 0.0 3.1 3.1| 25.4-158.6-133.3 -26.7 -0.23| 8.2 -1.9 6000 288 22 241 11| 0.3 2.6 2.9| 27.5-169.2-141.7 -23.6 -0.22| 7.4 -1.7 Wrote GIF file: /home/apache/climate/data/raob//SBTT/skewt/SBTT.skewt.20251208.12.gif