UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025121012.upa.cvt Date: 1200Z 10 DEC 25 Searching for SBTT... Searching the city database file for: SBTT ... Date:1200Z 10 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 23.0 89 2.0 23.6 0 0 298.1 301.3 296.7 350.2 17.94 1 1000 91 25.0 23.4 91 1.6 23.9 125 4 298.1 301.5 297.0 351.7 18.41 2 995 135 25.4 25.2 99 0.2 25.3 117 5 299.0 302.7 298.6 359.5 20.69 3 972 342 26.0 22.3 80 3.7 23.3 83 11 301.6 304.8 297.4 353.8 17.70 4 940 637 25.2 20.4 75 4.8 21.8 63 15 303.7 306.7 297.1 352.0 16.26 5 925 779 24.0 20.6 81 3.4 21.6 55 12 303.8 306.9 297.4 353.6 16.74 6 850 1515 18.6 16.4 87 2.2 17.1 55 21 305.6 308.2 296.0 347.4 13.94 7 747 2613 11.8 10.3 91 1.5 10.9 19 12 309.7 311.7 294.8 342.1 10.60 8 700 3157 9.4 5.8 78 3.6 7.2 310 13 312.9 314.5 294.0 338.6 8.29 9 633 3986 5.8 -5.2 45 11.0 0.4 303 15 317.9 318.7 292.0 331.2 4.10 10 615 4221 4.0 -2.0 65 6.0 0.8 301 16 318.5 319.5 293.3 335.8 5.38 11 594 4503 3.2 -15.8 23 19.0 -4.2 289 15 320.7 321.1 290.9 327.1 1.88 12 543 5225 -1.5 -22.5 18 21.0 -8.3 290 12 323.5 323.7 291.0 327.5 1.16 13 534 5358 -1.9 -17.9 28 16.0 -7.7 311 10 324.6 324.9 291.9 330.6 1.75 14 526 5478 -2.3 -32.3 8 30.0 -10.0 330 9 325.5 325.6 290.9 327.3 0.48 15 518 5599 -2.1 -14.1 39 12.0 -7.0 350 7 327.2 327.6 293.2 335.6 2.48 16 509 5739 -2.5 -17.5 31 15.0 -8.1 12 6 328.3 328.7 293.0 334.9 1.90 17 502 5848 -3.3 -14.3 42 11.0 -7.7 30 4 328.6 329.1 293.6 337.3 2.52 18 500 5880 -3.5 -14.5 42 11.0 -7.9 35 4 328.8 329.3 293.6 337.3 2.49 19 487 6088 -5.3 -14.3 49 9.0 -8.9 35 3 329.0 329.6 293.8 338.0 2.60 20 431 7040 -11.7 -22.7 40 11.0 -15.1 71 17 332.6 332.9 293.7 337.7 1.43 21 400 7610 -15.1 -27.1 35 12.0 -18.3 90 15 335.4 335.6 294.1 339.2 1.04 22 374 8113 -18.5 -32.5 28 14.0 -21.5 86 21 337.4 337.5 294.3 339.9 0.67 23 368 8233 -19.3 -28.3 45 9.0 -21.5 85 22 337.9 338.1 294.7 341.6 1.01 24 360 8396 -19.5 -37.5 19 18.0 -22.8 87 22 339.7 339.8 294.7 341.4 0.42 25 355 8500 -20.3 -36.3 23 16.0 -23.3 88 22 340.0 340.1 294.8 341.9 0.48 26 305 9602 -28.9 -45.9 18 17.0 -30.9 107 21 343.0 343.1 295.3 343.9 0.21 27 300 9720 -29.9 -45.9 20 16.0 -31.7 110 20 343.2 343.3 295.3 344.1 0.21 28 284 10106 -33.3 -42.3 40 9.0 -34.3 114 20 343.8 343.9 295.6 345.1 0.33 29 260 10720 -35.9 -57.9 9 22.0 -37.3 78 12 348.8 348.8 296.4 349.0 0.06 30 250 10990 -38.1 -60.1 8 22.0 -39.3 340 8 349.4 349.4 296.5 349.6 0.05 31 231 11532 -42.9 -65.9 6 23.0 -43.7 310 15 350.1 350.1 296.7 350.2 0.02 32 200 12490 -51.7 -68.7 11 17.0 -52.1 290 27 350.9 350.9 296.8 351.0 0.02 33 179 13196 -58.5 -72.5 15 14.0 -58.7 301 32 351.1 351.1 296.9 351.1 0.01 34 153 14161 -66.5 -70.7 55 4.2 -66.5 279 31 353.5 353.5 297.4 353.6 0.02 35 150 14280 -67.7 -72.2 53 4.5 -67.7 275 30 353.5 353.5 297.4 353.5 0.01 36 146 14441 -69.1 -73.9 50 4.8 -69.1 273 30 353.8 353.8 297.4 353.8 0.01 37 100 16620 -82.1 -88.1 35 6.0 -82.1 295 10 369.1 369.1 300.4 369.1 0.00 38 86 17457 -86.9 -91.1 46 4.2 -86.9 140 20 375.7 375.7 301.5 375.7 0.00 39 72 18434 -85.7 -90.6 41 4.9 -85.7 50 14 397.8 397.8 304.9 397.8 0.00 40 70 18590 -82.9 -88.9 35 6.0 -82.9 65 19 407.0 407.0 306.2 407.0 0.00 41 59 19566 -73.5 -87.5 10 14.0 -73.6 13 19 448.5 448.5 310.7 448.6 0.00 42 54 20082 -75.3 -89.3 9 14.0 -75.4 193 10 455.9 455.9 311.4 455.9 0.00 43 50 20530 -73.3 -90.3 6 17.0 -73.4 105 21 470.8 470.8 312.7 470.8 0.00 44 47 20893 -73.7 -91.7 5 18.0 -73.8 107 25 478.2 478.2 313.3 478.2 0.00 45 44 21288 -65.9 -89.9 2 24.0 -66.2 100 36 506.4 506.4 315.4 506.4 0.00 46 42 21571 -65.7 -90.7 2 25.0 -66.0 96 44 513.6 513.6 315.9 513.7 0.00 47 41 21718 -66.3 -91.3 2 25.0 -66.6 94 46 515.7 515.7 316.0 515.7 0.00 48 36 22510 -65.5 -91.5 2 26.0 -65.9 88 55 537.3 537.3 317.3 537.3 0.00 49 32 23237 -60.5 -90.5 1 30.0 -61.3 83 63 569.1 569.1 319.1 569.1 0.00 50 30 23640 -60.9 -89.9 1 29.0 -61.7 80 67 578.6 578.6 319.6 578.6 0.00 51 25 24778 -60.1 -91.1 1 31.0 -61.2 86 70 611.9 611.9 321.2 611.9 0.00 52 23 25304 -55.8 -89.4 1 33.6 -57.6 90 72 639.4 639.4 322.3 639.4 0.01 53 20 26210 -48.5 -86.5 0 38.0 -52.5 90 64 687.7 687.7 324.0 687.8 0.01 54 19 26548 -48.3 -86.3 0 38.0 -52.5 90 64 698.5 698.5 324.4 698.6 0.01 TRP 86 17457 -86.9 -91.1 46 4.2 -86.9 140 20 375.7 375.7 301.5 375.7 0.00 WND 23 25304 -55.8 -89.4 1 33.6 -57.6 90 72 639.4 639.4 322.3 639.4 0.01 Sounding variables and indices 1000-500 mb thick: 5789.00 m Freezing level: 559.28 mb = 4994.30 m = 16385.30 ft Wetbulb zero: 611.48 mb = 4267.64 m = 14001.26 ft Precipitable water: 2.04 inches Sfc-500 mean rel hum: 63.48 % Est. max temperature: 32.54 C = 90.58 F Sfc-Lift cond lev (LCL): 972.66 mb = 335.84 m = 1101.81 ft T: 25.98 C 700-500 lapse rate: 4.74 C/km ThetaE index: 22.44 C Layer 850.0- 615.0 mb Conv cond level (CCL): 872.12 mb = 1291.39 m = 4236.81 ft Mean mixing ratio: 17.36 g/kg Conv temperature: 32.04 C = 89.67 F Cap Strength: 1.81 C Lifted Index: -1.88 C Risk: Thunderstorms probable Lifted Index @300 mb: -3.55 C Lifted Index @700 mb: -2.22 C Showalter Index: 0.41 C Risk: Thunderstorms probable Total Totals Index: 42.00 C Risk: None Vertical Totals Index: 22.10 C Cross Totals Index: 19.90 C K Index: 34.90 Risk: 60-80 % chance of thunderstorms Sweat Index: 242.80 Risk: None Energy Index: -1.99 Risk: Scattered severe thunderstorms Parcel Indices Parcel: using 100 mb layer CAPE (B+): 1123.06 J/kg Max Up Vert Vel: 47.39 m/s Conv Inhibition (B-): 34.04 J/kg Cap Strength: 1.81 C Lift Cond Lev (LCL): 906.54 mb = 954.51 m = 3131.56 ft Lev Free Conv (LFC): 841.54 mb = 1600.11 m = 5249.66 ft Equ Level (EL): 141.54 mb = 14619.97 m = 47965.21 ft B at Equ Level: 1107.69 J/kg Max Parcel Lev (MPL): 81.54 mb = 17750.24 m = 58234.98 ft Wind level data Storm motion: 30 at 10 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 0 0 -0.0 -0.0 | 210 10 4.8 8.5 1 1000 91 125 4 -3.3 2.3 | 188 11 1.6 10.8 2 976 305 85 10 -10.0 -0.9 | 146 9 -5.1 7.7 3 943 610 65 16 -14.5 -6.8 | 100 10 -9.7 1.8 4 925 779 55 12 -9.8 -6.9 | 108 5 -5.0 1.7 5 911 914 50 12 -9.2 -7.7 | 101 4 -4.4 0.8 6 850 1515 55 21 -17.2 -12.0 | 74 13 -12.4 -3.5 7 849 1524 55 21 -17.2 -12.0 | 74 13 -12.4 -3.5 8 790 2134 55 17 -13.9 -9.8 | 82 9 -9.1 -1.2 9 762 2438 40 12 -7.7 -9.2 | 77 3 -2.9 -0.6 10 700 3157 310 13 10.0 -8.4 | 269 15 14.8 0.2 11 683 3353 310 13 10.0 -8.4 | 269 15 14.8 0.2 12 610 4267 300 16 13.9 -8.0 | 268 19 18.7 0.5 13 566 4877 270 12 12.0 -0.0 | 243 19 16.8 8.5 14 545 5182 285 12 11.6 -3.1 | 252 17 16.4 5.4 15 500 5880 35 4 -2.3 -3.3 | 206 6 2.5 5.3 16 486 6096 35 3 -1.7 -2.5 | 207 7 3.1 6.1 17 468 6401 0 0 -0.0 -0.0 | 210 10 4.8 8.5 18 449 6706 70 12 -11.3 -4.1 | 125 8 -6.4 4.4 19 432 7010 70 17 -16.0 -5.8 | 104 11 -11.1 2.7 20 400 7610 90 15 -15.0 0.0 | 130 13 -10.2 8.5 21 399 7620 90 15 -15.0 0.0 | 130 13 -10.2 8.5 22 368 8230 85 22 -21.9 -1.9 | 111 18 -17.1 6.6 23 325 9144 95 23 -22.9 2.0 | 120 21 -18.1 10.6 24 300 9720 110 20 -18.8 6.8 | 138 21 -14.0 15.4 25 286 10058 115 20 -18.1 8.5 | 142 22 -13.3 17.0 26 274 10363 105 20 -19.3 5.2 | 133 20 -14.5 13.7 27 262 10668 95 13 -13.0 1.1 | 140 13 -8.1 9.7 28 250 10990 340 8 2.7 -7.5 | 262 8 7.6 1.0 29 240 11278 315 12 8.5 -8.5 | 270 13 13.3 0.1 30 200 12490 290 27 25.4 -9.2 | 271 30 30.2 -0.7 31 200 12497 290 27 25.4 -9.2 | 271 30 30.2 -0.7 32 172 13411 305 34 27.9 -19.5 | 289 34 32.7 -11.0 33 150 14280 275 30 29.9 -2.6 | 260 35 34.7 5.9 34 120 15545 255 29 28.0 7.5 | 244 37 32.8 16.1 35 114 15850 270 15 15.0 -0.0 | 247 22 19.8 8.5 36 108 16154 305 21 17.2 -12.0 | 279 22 22.0 -3.5 37 100 16620 295 10 9.1 -4.2 | 253 15 13.9 4.3 38 97 16764 305 14 11.5 -8.0 | 268 16 16.3 0.5 39 92 17069 240 6 5.2 3.0 | 221 15 10.0 11.5 40 87 17374 180 11 0.0 11.0 | 194 20 4.8 19.5 41 86 17457 140 20 -12.9 15.3 | 161 25 -8.0 23.9 42 78 17983 120 24 -20.8 12.0 | 142 26 -15.9 20.5 43 74 18288 35 10 -5.7 -8.2 | 111 1 -0.9 0.4 44 70 18590 65 19 -17.2 -8.0 | 92 12 -12.4 0.5 45 66 18898 65 21 -19.0 -8.9 | 89 14 -14.2 -0.3 46 63 19202 45 19 -13.4 -13.4 | 60 10 -8.6 -4.9 47 60 19507 20 21 -7.2 -19.7 | 12 11 -2.3 -11.2 48 57 19812 350 11 1.9 -10.8 | 289 7 6.7 -2.3 49 54 20117 175 10 -0.9 10.0 | 192 19 4.0 18.5 50 50 20530 105 21 -20.3 5.4 | 132 21 -15.4 14.0 51 48 20726 110 20 -18.8 6.8 | 138 21 -14.0 15.4 52 42 21641 95 45 -44.8 3.9 | 107 42 -40.0 12.5 53 30 23640 80 67 -66.0 -11.6 | 87 61 -61.1 -3.1 54 28 24079 80 67 -66.0 -11.6 | 87 61 -61.1 -3.1 55 23 25304 90 72 -72.0 0.0 | 97 68 -67.2 8.5 56 22 25603 90 72 -72.0 0.0 | 97 68 -67.2 8.5 57 20 26210 90 64 -64.0 0.0 | 98 60 -59.2 8.5 58 17 26822 90 64 -64.0 0.0 | 98 60 -59.2 8.5 Wind Parameters Mean winds (0-6000m): 359.5 at 13.1 knts Storm direction: 29.5 at 9.8 knts Shear (0-3000m) pos: 3.7 neg: 4.8 tot: 8.5 10-3/s Storm rel Dir Shear (0-3000m): 65.6 deg Storm rel helicity (0-3000m) pos: 5.1 neg: -74.5 tot: -69.4 m^2/s^2 ave: -23.1 10^-3 m/s^2 rel: -0.56 Storm rel vorticity (0-3000m) horiz: 10.3 stream: -5.8 10^-3/s Energy-Hel index: 0.04 Bulk Rich Number: 36.67 Bulk Shear: 30.63 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 80 10 143 9| 16.0 0.0 16.0| 0.0 -45.3 -45.3 -90.5 -0.99| 18.8-18.6 1000 66 12 123 7| 8.0 2.1 10.1| 1.2 -49.0 -47.8 -47.8 -0.75| 13.5-10.2 1500 61 14 103 7| 7.4 1.4 8.8| 1.4 -52.9 -51.5 -34.3 -0.66| 11.1 -7.3 2000 59 15 95 8| 5.6 1.5 7.0| 5.1 -52.9 -47.8 -23.9 -0.56| 9.2 -5.2 2500 56 15 92 8| 4.5 3.2 7.6| 5.1 -56.5 -51.5 -20.6 -0.54| 9.5 -5.1 3000 49 15 81 6| 3.7 4.8 8.5| 5.1 -74.5 -69.4 -23.1 -0.56| 10.3 -5.8 4000 28 14 24 5| 2.8 4.2 7.0| 5.2 -80.6 -75.5 -18.9 -0.54| 8.4 -4.5 5000 6 14 329 7| 2.2 3.3 5.5| 13.9-122.6-108.7 -21.7 -0.55| 7.8 -4.3 6000 360 13 313 7| 3.0 2.8 5.7| 29.5-130.7-101.2 -16.9 -0.45| 8.2 -3.7 Wrote GIF file: /home/apache/climate/data/raob//SBTT/skewt/SBTT.skewt.20251210.12.gif