UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025122612.upa.cvt Date: 1200Z 26 DEC 25 Searching for SBTT... Searching the city database file for: SBTT ... Date:1200Z 26 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 23.6 130 5 298.1 301.3 296.7 350.2 17.94 1 1000 91 25.0 23.1 89 1.9 23.6 60 10 298.1 301.4 296.8 350.7 18.07 2 971 351 25.2 22.5 85 2.7 23.2 69 19 300.9 304.2 297.4 353.7 17.95 3 939 646 23.4 22.0 92 1.4 22.4 57 17 301.9 305.2 297.7 355.1 18.00 4 925 778 22.8 20.7 88 2.1 21.3 45 16 302.6 305.7 297.2 352.5 16.84 5 893 1086 21.8 16.8 73 5.0 18.4 40 20 304.7 307.2 295.6 345.2 13.60 6 850 1514 18.8 15.3 80 3.5 16.4 30 17 305.8 308.3 295.4 344.7 12.97 7 739 2701 11.0 9.4 90 1.6 10.0 17 13 309.8 311.7 294.4 340.6 10.07 8 723 2884 11.4 7.5 77 3.9 9.0 348 12 312.2 313.9 294.3 340.1 9.04 9 700 3154 9.6 6.0 78 3.6 7.4 305 16 313.1 314.7 294.1 339.2 8.41 10 679 3407 8.2 3.2 71 5.0 5.3 307 19 314.3 315.7 293.4 336.6 7.11 11 627 4061 4.4 2.7 89 1.7 3.4 322 19 317.2 318.6 294.5 340.7 7.44 12 594 4500 2.2 -3.8 64 6.0 -0.8 311 24 319.6 320.5 293.2 335.3 4.87 13 559 4989 -1.5 -2.3 94 0.8 -1.9 301 27 320.8 321.9 294.2 339.5 5.79 14 527 5456 -4.9 -6.6 88 1.7 -5.7 291 31 322.2 323.1 293.5 336.7 4.43 15 522 5531 -5.3 -8.1 81 2.8 -6.5 288 30 322.6 323.4 293.2 335.7 3.98 16 515 5637 -5.1 -20.1 30 15.0 -10.1 280 28 324.1 324.4 291.5 329.3 1.50 17 502 5839 -5.5 -31.5 11 26.0 -12.0 276 23 326.0 326.1 291.2 328.0 0.55 18 500 5870 -5.3 -32.3 10 27.0 -12.0 280 22 326.6 326.7 291.3 328.4 0.51 19 486 6092 -6.1 -28.1 16 22.0 -12.2 280 21 328.3 328.4 292.0 331.1 0.78 20 404 7505 -15.9 -32.9 22 17.0 -19.6 260 9 333.4 333.5 293.2 335.6 0.59 21 401 7561 -16.3 -23.3 55 7.0 -18.3 256 8 333.6 333.9 294.0 338.8 1.46 22 400 7580 -16.1 -25.1 46 9.0 -18.6 255 8 334.1 334.3 294.0 338.6 1.24 23 383 7907 -17.3 -47.3 5 30.0 -21.6 229 14 336.7 336.7 293.6 337.2 0.14 24 365 8268 -19.1 -28.1 45 9.0 -21.3 235 15 338.9 339.1 295.0 342.8 1.04 25 360 8371 -19.3 -32.3 31 13.0 -22.1 235 16 340.0 340.1 295.0 342.7 0.71 26 334 8925 -24.1 -28.3 68 4.2 -25.1 262 15 340.8 341.0 295.5 344.9 1.11 27 300 9700 -30.5 -32.1 86 1.6 -30.8 210 6 342.4 342.6 295.7 345.7 0.86 28 299 9724 -30.9 -32.3 87 1.4 -31.2 208 6 342.2 342.3 295.6 345.4 0.85 29 272 10389 -36.1 -37.0 91 0.9 -36.2 165 10 344.0 344.1 295.8 346.3 0.59 30 250 10970 -41.1 -44.2 72 3.1 -41.3 155 6 345.0 345.0 295.8 346.2 0.30 31 237 11329 -43.9 -49.9 51 6.0 -44.3 165 10 346.0 346.1 295.9 346.7 0.17 32 225 11674 -47.1 -50.1 71 3.0 -47.3 168 15 346.3 346.4 296.0 347.0 0.17 33 221 11792 -47.9 -55.9 39 8.0 -48.3 173 16 346.9 346.9 296.0 347.2 0.09 34 215 11972 -49.3 -58.3 34 9.0 -49.6 181 17 347.4 347.5 296.1 347.7 0.07 35 200 12440 -53.7 -61.7 37 8.0 -53.9 180 22 347.7 347.7 296.2 347.9 0.05 36 182 13039 -59.3 -62.5 66 3.2 -59.3 186 22 348.1 348.1 296.3 348.3 0.05 37 175 13284 -61.7 -65.0 65 3.3 -61.7 188 22 348.1 348.1 296.3 348.2 0.03 38 171 13427 -62.9 -69.9 38 7.0 -63.0 190 22 348.4 348.4 296.3 348.5 0.02 39 159 13871 -67.3 -71.7 53 4.4 -67.3 169 28 348.3 348.3 296.3 348.4 0.02 40 150 14220 -70.3 -74.0 58 3.7 -70.3 165 28 349.0 349.0 296.4 349.0 0.01 41 103 16384 -81.3 -86.3 42 5.0 -81.3 115 14 367.5 367.5 300.1 367.5 0.00 42 101 16494 -80.5 -86.5 36 6.0 -80.5 131 12 371.1 371.1 300.8 371.1 0.00 43 100 16550 -80.3 -86.3 36 6.0 -80.3 125 16 372.6 372.6 301.0 372.6 0.00 44 92 17022 -78.1 -87.1 22 9.0 -78.1 134 23 385.9 385.9 303.2 385.9 0.00 45 85 17471 -80.1 -89.1 21 9.0 -80.1 98 41 390.7 390.7 303.9 390.7 0.00 46 73 18346 -72.9 -87.9 9 15.0 -73.0 36 18 423.3 423.3 308.1 423.3 0.00 47 70 18590 -75.1 -90.1 8 15.0 -75.2 80 22 423.7 423.7 308.2 423.7 0.00 48 62 19296 -75.7 -89.7 9 14.0 -75.7 356 18 437.4 437.4 309.6 437.4 0.00 49 60 19487 -75.5 -90.5 8 15.0 -75.6 316 15 441.9 441.9 310.1 441.9 0.00 50 59 19586 -69.7 -87.7 6 18.0 -69.8 317 14 457.1 457.1 311.5 457.1 0.00 51 55 20007 -68.5 -89.5 3 21.0 -68.7 213 12 469.1 469.1 312.5 469.1 0.00 52 53 20230 -69.1 -90.1 3 21.0 -69.2 143 16 472.7 472.7 312.8 472.7 0.00 53 50 20580 -67.9 -89.9 3 22.0 -68.1 95 26 483.5 483.5 313.7 483.5 0.00 54 42 21627 -68.3 -91.3 2 23.0 -68.5 104 37 507.2 507.2 315.5 507.2 0.00 55 40 21923 -63.9 -90.9 1 27.0 -64.3 105 41 525.4 525.4 316.6 525.4 0.00 56 38 22237 -64.9 -90.9 2 26.0 -65.3 97 48 530.6 530.6 316.9 530.6 0.00 TRP 103 16384 -81.3 -86.3 42 5.0 -81.3 115 14 367.5 367.5 300.1 367.5 0.00 WND Sounding variables and indices 1000-500 mb thick: 5779.00 m Freezing level: 573.19 mb = 4790.63 m = 15717.11 ft Wetbulb zero: 600.45 mb = 4412.71 m = 14477.22 ft Precipitable water: 2.13 inches Sfc-500 mean rel hum: 79.04 % Est. max temperature: 32.75 C = 90.95 F Sfc-Lift cond lev (LCL): 972.66 mb = 335.91 m = 1102.05 ft T: 25.19 C 700-500 lapse rate: 5.49 C/km ThetaE index: 18.54 C Layer 925.0- 627.0 mb Conv cond level (CCL): 868.98 mb = 1322.35 m = 4338.36 ft Mean mixing ratio: 17.31 g/kg Conv temperature: 32.25 C = 90.05 F Cap Strength: 1.74 C Lifted Index: -3.27 C Risk: Severe thunderstorms possible Lifted Index @300 mb: -3.51 C Lifted Index @700 mb: -1.67 C Showalter Index: -0.40 C Risk: Thunderstorms probable Total Totals Index: 44.70 C Risk: Scattered moderate thunderstorms Vertical Totals Index: 24.10 C Cross Totals Index: 20.60 C K Index: 35.80 Risk: > 80 % chance of thunderstorms Sweat Index: 239.60 Risk: None Energy Index: -3.10 Risk: Severe Thunderstorms probable Parcel Indices Parcel: using 100 mb layer CAPE (B+): 1460.53 J/kg Max Up Vert Vel: 54.05 m/s Conv Inhibition (B-): 36.25 J/kg Cap Strength: 1.68 C Lift Cond Lev (LCL): 918.57 mb = 839.00 m = 2752.59 ft Lev Free Conv (LFC): 823.57 mb = 1781.95 m = 5846.21 ft Equ Level (EL): 133.57 mb = 14887.96 m = 48844.41 ft B at Equ Level: 1433.74 J/kg Max Parcel Lev (MPL): 83.57 mb = 17568.75 m = 57639.55 ft Wind level data Storm motion: 4 at 15 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 85 130 5 -3.8 3.2 | 172 18 -2.7 18.1 1 1000 91 60 10 -8.7 -5.0 | 143 12 -7.5 9.9 2 976 305 70 19 -17.9 -6.5 | 117 19 -16.7 8.4 3 943 610 60 17 -14.7 -8.5 | 115 15 -13.6 6.4 4 925 778 45 16 -11.3 -11.3 | 109 11 -10.2 3.6 5 911 914 40 17 -10.9 -13.0 | 101 10 -9.8 1.9 6 879 1219 40 22 -14.1 -16.9 | 82 13 -13.0 -1.9 7 850 1514 30 17 -8.5 -14.7 | 92 7 -7.4 0.2 8 849 1524 25 17 -7.2 -15.4 | 85 6 -6.1 -0.5 9 790 2134 25 17 -7.2 -15.4 | 85 6 -6.1 -0.5 10 762 2438 25 18 -7.6 -16.3 | 78 7 -6.5 -1.4 11 735 2743 15 12 -3.1 -11.6 | 149 4 -2.0 3.3 12 709 3048 315 13 9.2 -9.2 | 241 12 10.3 5.7 13 700 3154 305 16 13.1 -9.2 | 248 15 14.2 5.7 14 683 3353 305 19 15.6 -10.9 | 256 17 16.7 4.0 15 633 3962 325 18 10.3 -14.7 | 269 11 11.5 0.2 16 610 4267 315 22 15.6 -15.6 | 272 17 16.7 -0.6 17 524 5486 290 31 29.1 -10.6 | 262 31 30.3 4.3 18 505 5791 270 24 24.0 -0.0 | 239 29 25.1 14.9 19 500 5870 280 22 21.7 -3.8 | 244 25 22.8 11.1 20 485 6096 280 21 20.7 -3.6 | 243 25 21.8 11.3 21 467 6401 280 16 15.8 -2.8 | 234 21 16.9 12.1 22 448 6706 275 17 16.9 -1.5 | 233 23 18.1 13.4 23 431 7010 295 17 15.4 -7.2 | 245 18 16.5 7.7 24 400 7580 255 8 7.7 2.1 | 208 19 8.9 17.0 25 398 7620 270 10 10.0 -0.0 | 217 19 11.1 14.9 26 382 7925 225 14 9.9 9.9 | 204 27 11.0 24.8 27 366 8230 235 15 12.3 8.6 | 210 27 13.4 23.5 28 351 8534 235 18 14.7 10.3 | 212 30 15.9 25.2 29 337 8839 260 16 15.8 2.8 | 224 24 16.9 17.7 30 324 9144 270 10 10.0 -0.0 | 217 19 11.1 14.9 31 300 9700 210 6 3.0 5.2 | 192 21 4.1 20.1 32 273 10363 165 10 -2.6 9.7 | 177 25 -1.5 24.6 33 250 10970 155 6 -2.5 5.4 | 176 20 -1.4 20.4 34 250 10973 165 5 -1.3 4.8 | 180 20 -0.2 19.7 35 228 11582 165 14 -3.6 13.5 | 175 29 -2.5 28.4 36 208 12192 190 19 3.3 18.7 | 188 34 4.4 33.6 37 200 12440 180 22 0.0 22.0 | 182 37 1.1 36.9 38 198 12497 180 21 0.0 21.0 | 182 36 1.1 35.9 39 171 13411 190 22 3.8 21.7 | 188 37 5.0 36.6 40 163 13716 170 28 -4.9 27.6 | 175 43 -3.7 42.5 41 150 14220 165 28 -7.2 27.0 | 172 42 -6.1 42.0 42 140 14630 165 28 -7.2 27.0 | 172 42 -6.1 42.0 43 132 14935 150 29 -14.5 25.1 | 162 42 -13.4 40.0 44 113 15850 55 10 -8.2 -5.7 | 142 12 -7.1 9.2 45 107 16154 75 3 -2.9 -0.8 | 173 14 -1.8 14.1 46 103 16384 115 14 -12.7 5.9 | 151 24 -11.6 20.8 47 102 16459 135 10 -7.1 7.1 | 165 23 -5.9 22.0 48 100 16550 125 16 -13.1 9.2 | 154 27 -12.0 24.1 49 96 16764 125 16 -13.1 9.2 | 154 27 -12.0 24.1 50 91 17069 135 24 -17.0 17.0 | 154 36 -15.8 31.9 51 87 17374 105 43 -41.5 11.1 | 123 48 -40.4 26.0 52 82 17678 85 37 -36.9 -3.2 | 108 38 -35.7 11.7 53 78 17983 85 36 -35.9 -3.1 | 109 37 -34.7 11.8 54 74 18288 25 17 -7.2 -15.4 | 85 6 -6.1 -0.5 55 70 18590 80 22 -21.7 -3.8 | 118 23 -20.5 11.1 56 66 18898 80 23 -22.7 -4.0 | 117 24 -21.5 10.9 57 60 19507 315 15 10.6 -10.6 | 250 13 11.7 4.3 58 57 19812 320 11 7.1 -8.4 | 232 10 8.2 6.5 59 54 20117 160 13 -4.4 12.2 | 173 27 -3.3 27.1 60 50 20580 95 26 -25.9 2.3 | 125 30 -24.8 17.2 61 48 20726 100 25 -24.6 4.3 | 129 30 -23.5 19.3 62 40 21641 105 41 -39.6 10.6 | 124 46 -38.5 25.5 63 38 21946 95 50 -49.8 4.4 | 112 52 -48.7 19.3 64 33 22555 90 47 -47.0 0.0 | 108 48 -45.9 14.9 Wind Parameters Mean winds (0-6000m): 334.3 at 19.9 knts Storm direction: 4.3 at 15.0 knts Shear (0-3000m) pos: 0.0 neg: 3.3 tot: 3.3 10-3/s Storm rel Dir Shear (0-3000m): 72.8 deg Storm rel helicity (0-3000m) pos: 14.9 neg: -86.1 tot: -71.1 m^2/s^2 ave: -23.7 10^-3 m/s^2 rel: -0.18 Storm rel vorticity (0-3000m) horiz: 10.2 stream: -1.9 10^-3/s Energy-Hel index: 0.03 Bulk Rich Number: 16.10 Bulk Shear: 90.72 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 66 16 121 16| 0.0 16.5 16.5| 0.0 -64.1 -64.1 -128.3 -0.78| 21.2-16.6 1000 56 17 113 14| 0.0 10.5 10.5| 0.0 -79.6 -79.6 -79.6 -0.72| 15.3-11.0 1500 48 18 105 12| 0.0 6.5 6.5| 3.0 -84.9 -82.0 -54.6 -0.58| 13.1 -7.5 2000 42 18 100 11| 0.0 4.9 4.9| 3.0 -84.9 -82.0 -41.0 -0.58| 9.8 -5.7 2500 39 17 98 10| 0.0 3.6 3.6| 5.5 -86.1 -80.6 -32.2 -0.49| 8.7 -4.3 3000 34 17 97 8| 0.0 3.3 3.3| 14.9 -86.1 -71.1 -23.7 -0.18| 10.2 -1.9 4000 13 17 58 3| 0.8 2.4 3.2| 42.0 -86.1 -44.1 -11.0 -0.06| 9.4 -0.5 5000 353 19 316 5| 0.6 3.0 3.6| 42.8 -99.3 -56.5 -11.3 -0.07| 8.8 -0.6 6000 334 20 287 10| 0.5 2.0 2.5| 57.2-210.9-153.7 -25.6 -0.17| 9.2 -1.6 Wrote GIF file: /home/apache/climate/data/raob//SBTT/skewt/SBTT.skewt.20251226.12.gif