UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025120912.upa.cvt Date: 1200Z 9 DEC 25 Searching for SBTT... Searching the city database file for: SBTT ... Date:1200Z 9 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 25.0 22.0 83 3.0 22.9 170 2 298.1 301.1 296.0 347.0 16.86 1 1000 92 24.8 22.2 85 2.6 22.9 150 3 298.0 301.1 296.1 347.6 17.09 2 984 234 23.6 23.2 98 0.4 23.3 86 6 298.1 301.5 297.0 351.9 18.49 3 978 288 25.0 22.0 83 3.0 22.9 62 8 300.1 303.2 296.8 350.6 17.26 4 959 462 24.6 21.2 81 3.4 22.2 47 12 301.3 304.4 296.8 350.7 16.75 5 938 657 24.2 19.2 74 5.0 20.6 40 17 302.8 305.6 296.1 347.5 15.10 6 925 780 23.2 19.6 80 3.6 20.6 40 20 303.0 305.9 296.5 349.6 15.71 7 855 1462 18.2 17.3 94 0.9 17.6 41 18 304.7 307.4 296.3 348.5 14.69 8 850 1512 18.0 16.4 90 1.6 16.9 40 18 305.0 307.6 295.9 346.6 13.94 9 818 1841 17.2 10.2 63 7.0 12.7 24 12 307.5 309.3 293.4 336.6 9.60 10 771 2344 14.0 12.0 88 2.0 12.7 350 14 309.3 311.5 295.4 344.3 11.51 11 727 2839 12.0 6.0 67 6.0 8.4 322 14 312.4 313.9 293.7 337.5 8.09 12 700 3156 10.0 6.3 78 3.7 7.8 310 16 313.6 315.2 294.4 340.3 8.59 13 691 3263 9.6 2.6 62 7.0 5.6 307 18 314.3 315.6 293.2 335.3 6.69 14 624 4100 3.8 1.2 83 2.6 2.4 306 18 316.9 318.2 293.9 338.2 6.71 15 614 4231 3.2 -1.8 70 5.0 0.6 302 17 317.7 318.8 293.1 335.2 5.47 16 605 4351 3.4 -23.6 12 27.0 -5.3 294 17 319.3 319.5 289.5 322.6 0.94 17 601 4404 3.2 -26.8 9 30.0 -5.8 288 18 319.7 319.8 289.4 322.2 0.71 18 592 4526 2.0 -10.0 41 12.0 -3.3 276 19 319.7 320.2 291.6 329.6 3.02 19 578 4719 0.8 -14.2 32 15.0 -5.1 272 20 320.4 320.9 291.1 327.8 2.20 20 574 4775 1.0 -31.0 7 32.0 -7.6 273 20 321.3 321.4 289.7 323.1 0.50 21 532 5381 -3.3 -27.3 14 24.0 -10.1 277 21 323.2 323.4 290.6 326.0 0.77 22 525 5485 -3.5 -24.5 18 21.0 -9.9 275 21 324.2 324.4 291.1 327.7 1.00 23 510 5714 -4.3 -14.3 46 10.0 -8.2 271 19 325.9 326.4 292.9 334.4 2.48 24 500 5870 -4.9 -21.9 25 17.0 -10.4 270 21 327.1 327.3 292.2 331.7 1.32 25 489 6045 -5.9 -10.4 70 4.5 -7.9 281 19 327.9 328.6 294.3 339.9 3.54 26 478 6223 -6.7 -15.7 49 9.0 -10.1 289 17 329.1 329.6 293.6 337.2 2.35 27 449 6709 -10.3 -13.5 77 3.2 -11.6 305 13 330.5 331.1 294.5 340.8 3.01 28 432 7006 -12.5 -19.5 56 7.0 -14.8 341 12 331.4 331.7 293.8 338.0 1.89 29 416 7294 -14.7 -18.8 71 4.1 -16.1 17 10 332.1 332.6 294.2 339.4 2.08 30 409 7422 -15.5 -17.9 82 2.4 -16.3 29 10 332.7 333.2 294.5 340.7 2.29 31 400 7590 -16.5 -20.5 71 4.0 -17.7 45 11 333.5 333.9 294.4 340.2 1.87 32 374 8093 -19.9 -24.5 67 4.6 -21.1 68 11 335.5 335.8 294.4 340.6 1.41 33 366 8254 -20.3 -30.3 40 10.0 -22.5 81 13 337.1 337.2 294.4 340.2 0.84 34 354 8500 -22.5 -29.5 53 7.0 -24.1 95 14 337.3 337.5 294.5 340.8 0.94 35 322 9192 -26.5 -40.5 25 14.0 -28.5 109 18 341.1 341.1 294.9 342.4 0.35 36 300 9700 -30.3 -44.3 24 14.0 -31.9 120 23 342.7 342.7 295.2 343.7 0.25 37 279 10212 -33.5 -52.5 13 19.0 -35.0 127 28 345.3 345.3 295.7 345.7 0.11 38 253 10889 -39.7 -53.7 21 14.0 -40.6 130 35 345.9 345.9 295.8 346.3 0.10 39 251 10943 -40.1 -45.0 59 4.9 -40.5 130 36 346.1 346.1 296.0 347.2 0.28 40 250 10970 -40.3 -46.3 53 6.0 -40.8 130 36 346.2 346.2 296.0 347.1 0.24 41 240 11247 -42.3 -53.3 29 11.0 -42.9 130 37 347.2 347.2 296.1 347.7 0.11 42 225 11679 -46.1 -58.1 24 12.0 -46.6 130 37 347.9 347.9 296.2 348.1 0.07 43 209 12165 -50.3 -59.3 34 9.0 -50.6 130 36 348.7 348.7 296.4 349.0 0.06 44 201 12418 -52.5 -61.5 33 9.0 -52.8 121 36 349.1 349.1 296.5 349.3 0.05 45 200 12450 -52.7 -62.7 29 10.0 -52.9 120 36 349.3 349.3 296.5 349.5 0.04 46 180 13123 -56.7 -70.7 16 14.0 -56.9 65 20 353.5 353.5 297.4 353.5 0.02 47 150 14250 -66.5 -75.5 27 9.0 -66.5 350 31 355.5 355.5 297.8 355.6 0.01 48 142 14578 -69.5 -75.5 41 6.0 -69.5 346 30 355.9 355.9 297.9 355.9 0.01 49 101 16554 -79.3 -87.3 26 8.0 -79.3 261 23 373.4 373.4 301.2 373.5 0.00 50 100 16610 -79.9 -87.9 25 8.0 -79.9 240 21 373.4 373.4 301.1 373.4 0.00 51 87 17389 -84.9 -90.9 33 6.0 -84.9 203 27 378.5 378.5 302.0 378.5 0.00 52 83 17650 -81.9 -88.9 29 7.0 -81.9 147 25 389.7 389.7 303.8 389.7 0.00 53 72 18436 -87.1 -91.2 47 4.1 -87.1 120 17 394.9 394.9 304.5 394.9 0.00 54 70 18590 -86.7 -91.5 41 4.8 -86.7 95 21 398.9 398.9 305.0 398.9 0.00 55 63 19176 -80.9 -89.9 21 9.0 -80.9 105 21 423.9 423.9 308.2 423.9 0.00 56 61 19361 -73.5 -87.5 10 14.0 -73.6 93 25 444.3 444.3 310.3 444.3 0.00 57 59 19558 -71.3 -89.3 5 18.0 -71.4 73 24 453.5 453.5 311.2 453.5 0.00 58 55 19973 -72.3 -89.3 6 17.0 -72.4 352 12 460.4 460.4 311.8 460.4 0.00 59 50 20540 -68.5 -89.5 3 21.0 -68.7 90 31 482.1 482.1 313.6 482.1 0.00 60 49 20660 -68.5 -90.5 3 22.0 -68.7 93 33 484.9 484.9 313.8 484.9 0.00 61 40 21875 -66.9 -91.9 2 25.0 -67.2 97 51 517.9 517.9 316.2 517.9 0.00 62 34 22850 -67.7 -92.7 2 25.0 -68.0 100 44 540.4 540.4 317.5 540.4 0.00 63 30 23610 -62.3 -91.3 1 29.0 -63.0 90 63 574.8 574.8 319.4 574.8 0.00 64 28 24040 -58.3 -90.3 1 32.0 -59.5 87 64 597.4 597.4 320.5 597.4 0.00 65 24 25014 -56.8 -90.0 1 33.3 -58.3 100 75 628.8 628.8 321.9 628.8 0.00 66 22 25566 -55.9 -89.9 1 34.0 -57.8 100 75 647.2 647.2 322.6 647.2 0.01 TRP 72 18436 -87.1 -91.2 47 4.1 -87.1 120 17 394.9 394.9 304.5 394.9 0.00 WND 24 25014 -56.8 -90.0 1 33.3 -58.3 100 75 628.8 628.8 321.9 628.8 0.00 Sounding variables and indices 1000-500 mb thick: 5778.00 m Freezing level: 564.23 mb = 4915.71 m = 16127.46 ft Wetbulb zero: 613.08 mb = 4243.22 m = 13921.15 ft Precipitable water: 1.98 inches Sfc-500 mean rel hum: 61.66 % Est. max temperature: 31.88 C = 89.38 F Sfc-Lift cond lev (LCL): 958.54 mb = 465.99 m = 1528.82 ft T: 24.59 C 700-500 lapse rate: 5.49 C/km ThetaE index: 12.99 C Layer 855.0- 771.0 mb Conv cond level (CCL): 869.63 mb = 1314.70 m = 4313.27 ft Mean mixing ratio: 16.37 g/kg Conv temperature: 31.28 C = 88.31 F Cap Strength: 1.98 C Lifted Index: -1.81 C Risk: Thunderstorms probable Lifted Index @300 mb: -1.73 C Lifted Index @700 mb: -0.51 C Showalter Index: -0.70 C Risk: Thunderstorms probable Total Totals Index: 44.20 C Risk: Scattered moderate thunderstorms Vertical Totals Index: 22.90 C Cross Totals Index: 21.30 C K Index: 35.60 Risk: > 80 % chance of thunderstorms Sweat Index: 253.80 Risk: None Energy Index: -2.90 Risk: Severe Thunderstorms probable Parcel Indices Parcel: using 100 mb layer CAPE (B+): 659.93 J/kg Max Up Vert Vel: 36.33 m/s Conv Inhibition (B-): 55.03 J/kg Cap Strength: 1.98 C Lift Cond Lev (LCL): 907.22 mb = 948.16 m = 3110.72 ft Lev Free Conv (LFC): 772.22 mb = 2330.72 m = 7646.63 ft Equ Level (EL): 732.22 mb = 2779.10 m = 9117.66 ft B at Equ Level: 25.03 J/kg Max Parcel Lev (MPL): 112.22 mb = 15943.04 m = 52305.94 ft Wind level data Storm motion: 351 at 13 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 85 170 2 -0.3 2.0 | 171 15 -2.3 14.7 1 1000 92 150 3 -1.5 2.6 | 167 16 -3.4 15.3 2 976 305 55 8 -6.6 -4.6 | 134 12 -8.5 8.1 3 943 610 40 16 -10.3 -12.3 | 92 12 -12.2 0.5 4 925 780 40 20 -12.9 -15.3 | 80 15 -14.8 -2.6 5 911 914 40 22 -14.1 -16.9 | 76 17 -16.1 -4.1 6 879 1219 45 18 -12.7 -12.7 | 90 15 -14.7 0.0 7 850 1512 40 18 -11.6 -13.8 | 86 14 -13.5 -1.1 8 819 1829 25 12 -5.1 -10.9 | 105 7 -7.0 1.9 9 790 2134 360 13 -0.0 -13.0 | 82 2 -1.9 -0.3 10 762 2438 345 14 3.6 -13.5 | 295 2 1.7 -0.8 11 735 2743 325 13 7.5 -10.6 | 249 6 5.5 2.1 12 700 3156 310 16 12.3 -10.3 | 257 11 10.3 2.4 13 683 3353 305 19 15.6 -10.9 | 262 14 13.6 1.8 14 658 3658 320 21 13.5 -16.1 | 286 12 11.6 -3.4 15 610 4267 300 17 14.7 -8.5 | 252 13 12.8 4.2 16 587 4572 270 19 19.0 -0.0 | 233 21 17.1 12.7 17 545 5182 280 23 22.7 -4.0 | 247 22 20.7 8.7 18 505 5791 270 18 18.0 -0.0 | 232 20 16.1 12.7 19 500 5870 270 21 21.0 -0.0 | 236 23 19.1 12.7 20 486 6096 285 18 17.4 -4.7 | 242 17 15.4 8.1 21 449 6706 305 13 10.6 -7.5 | 239 10 8.7 5.3 22 415 7315 20 10 -3.4 -9.4 | 122 6 -5.4 3.3 23 400 7590 45 11 -7.8 -7.8 | 117 11 -9.7 5.0 24 398 7620 30 6 -3.0 -5.2 | 147 9 -4.9 7.5 25 367 8230 80 13 -12.8 -2.3 | 125 18 -14.7 10.5 26 337 8839 115 16 -14.5 6.8 | 140 26 -16.4 19.5 27 310 9449 105 20 -19.3 5.2 | 130 28 -21.3 17.9 28 300 9700 120 23 -19.9 11.5 | 138 33 -21.9 24.2 29 298 9754 125 23 -18.8 13.2 | 141 33 -20.8 25.9 30 250 10970 130 36 -27.6 23.1 | 141 46 -29.5 35.9 31 239 11278 130 37 -28.3 23.8 | 140 47 -30.3 36.5 32 208 12192 130 36 -27.6 23.1 | 141 46 -29.5 35.9 33 200 12450 120 36 -31.2 18.0 | 133 45 -33.1 30.7 34 189 12802 120 36 -31.2 18.0 | 133 45 -33.1 30.7 35 180 13106 65 20 -18.1 -8.5 | 102 21 -20.1 4.3 36 163 13716 50 18 -13.8 -11.6 | 94 16 -15.7 1.2 37 156 14021 360 22 -0.0 -22.0 | 12 9 -1.9 -9.3 38 150 14250 350 31 5.4 -30.5 | 349 18 3.4 -17.8 39 148 14326 360 26 -0.0 -26.0 | 8 13 -1.9 -13.3 40 133 14935 325 37 21.2 -30.3 | 312 26 19.3 -17.6 41 120 15545 325 49 28.1 -40.1 | 316 38 26.2 -27.4 42 103 16459 295 26 23.6 -11.0 | 265 22 21.6 1.7 43 100 16610 240 21 18.2 10.5 | 215 28 16.2 23.2 44 97 16764 240 21 18.2 10.5 | 215 28 16.2 23.2 45 87 17374 205 27 11.4 24.5 | 194 38 9.5 37.2 46 83 17678 140 25 -16.1 19.2 | 151 37 -18.0 31.9 47 78 17983 145 23 -13.2 18.8 | 154 35 -15.1 31.6 48 74 18288 110 13 -12.2 4.4 | 141 22 -14.2 17.2 49 72 18436 120 17 -14.7 8.5 | 142 27 -16.7 21.2 50 70 18590 95 21 -20.9 1.8 | 122 27 -22.9 14.6 51 70 18593 130 16 -12.3 10.3 | 148 27 -14.2 23.0 52 66 18898 95 21 -20.9 1.8 | 122 27 -22.9 14.6 53 63 19202 105 21 -20.3 5.4 | 129 29 -22.2 18.2 54 60 19507 85 28 -27.9 -2.4 | 109 32 -29.8 10.3 55 57 19812 35 13 -7.5 -10.6 | 102 10 -9.4 2.1 56 54 20117 320 11 7.1 -8.4 | 230 7 5.1 4.3 57 51 20422 80 13 -12.8 -2.3 | 125 18 -14.7 10.5 58 50 20540 90 31 -31.0 0.0 | 111 35 -32.9 12.7 59 48 20726 95 34 -33.9 3.0 | 114 39 -35.8 15.7 60 46 21031 100 37 -36.4 6.4 | 117 43 -38.4 19.2 61 42 21641 100 53 -52.2 9.2 | 112 58 -54.1 21.9 62 36 22555 90 47 -47.0 0.0 | 105 51 -48.9 12.7 63 34 22860 100 44 -43.3 7.6 | 114 50 -45.3 20.4 64 30 23610 90 63 -63.0 0.0 | 101 66 -64.9 12.7 65 27 24384 85 64 -63.8 -5.6 | 96 66 -65.7 7.2 66 24 25014 100 75 -73.9 13.0 | 109 80 -75.8 25.8 67 22 25298 100 75 -73.9 13.0 | 109 80 -75.8 25.8 68 19 25908 100 74 -72.9 12.8 | 109 79 -74.8 25.6 Wind Parameters Mean winds (0-6000m): 321.3 at 17.2 knts Storm direction: 351.3 at 12.9 knts Shear (0-3000m) pos: 0.8 neg: 3.1 tot: 3.8 10-3/s Storm rel Dir Shear (0-3000m): 85.4 deg Storm rel helicity (0-3000m) pos: 21.9 neg: -85.0 tot: -63.1 m^2/s^2 ave: -21.0 10^-3 m/s^2 rel: -0.41 Storm rel vorticity (0-3000m) horiz: 9.5 stream: -3.9 10^-3/s Energy-Hel index: 0.08 Bulk Rich Number: 13.11 Bulk Shear: 50.32 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 53 9 129 12| 0.0 17.2 17.2| 0.0 -61.3 -61.3 -122.7 -0.93| 19.4-18.0 1000 44 14 102 12| 2.3 8.6 10.9| 8.1 -78.0 -69.9 -69.9 -0.74| 14.0-10.4 1500 43 16 96 13| 1.5 4.8 6.3| 14.8 -80.8 -66.1 -44.0 -0.60| 11.0 -6.6 2000 39 15 95 11| 1.1 3.1 4.3| 20.5 -82.1 -61.6 -30.8 -0.43| 10.7 -4.6 2500 30 15 90 9| 0.9 3.0 3.9| 20.5 -83.8 -63.4 -25.3 -0.46| 10.1 -4.6 3000 20 15 82 7| 0.8 3.1 3.8| 21.9 -85.0 -63.1 -21.0 -0.41| 9.5 -3.9 4000 357 16 22 3| 0.9 2.1 3.1| 42.3-101.8 -59.5 -14.9 -0.31| 8.9 -2.8 5000 337 16 299 5| 1.1 2.1 3.2| 67.2-134.8 -67.6 -13.5 -0.29| 8.8 -2.6 6000 321 17 274 9| 1.2 1.6 2.8| 93.1-167.4 -74.3 -12.4 -0.26| 8.6 -2.2 Wrote GIF file: /home/apache/climate/data/raob//SBTT/skewt/SBTT.skewt.20251209.12.gif