UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025122312.upa.cvt Date: 1200Z 23 DEC 25 Searching for SBTT... Searching the city database file for: SBTT ... Date:1200Z 23 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 1000 85 24.0 23.0 94 1.0 23.3 160 3 297.1 300.4 296.4 349.2 17.96 1 957 470 26.2 21.4 75 4.8 22.7 5 7 303.1 306.3 297.4 353.6 17.00 2 925 769 24.6 20.3 77 4.3 21.5 340 9 304.5 307.5 297.4 353.4 16.42 3 850 1506 19.2 16.4 84 2.8 17.2 360 17 306.3 308.9 296.2 348.1 13.94 4 816 1857 17.0 15.1 89 1.9 15.7 10 17 307.5 310.0 296.1 347.8 13.35 5 762 2439 14.0 12.4 90 1.6 13.0 355 12 310.4 312.6 296.0 346.9 11.96 6 700 3153 10.4 7.2 81 3.2 8.4 325 7 314.0 315.8 294.9 342.4 9.15 7 687 3309 9.8 5.4 74 4.4 7.2 306 9 315.0 316.6 294.5 340.7 8.22 8 641 3882 6.0 0.0 65 6.0 2.7 313 10 317.0 318.2 293.3 336.0 5.98 9 575 4766 0.2 0.1 99 0.1 0.1 212 10 320.2 321.5 294.7 341.8 6.72 10 543 5224 -1.5 -3.1 89 1.6 -2.3 186 10 323.5 324.6 294.7 341.8 5.61 11 500 5880 -4.3 -20.3 27 16.0 -9.8 210 12 327.8 328.1 292.6 333.1 1.52 12 485 6119 -5.5 -33.5 9 28.0 -12.3 210 11 329.2 329.3 292.0 330.9 0.47 13 454 6632 -7.9 -36.9 8 29.0 -14.3 258 12 332.5 332.5 292.7 333.8 0.36 14 414 7339 -13.7 -37.7 11 24.0 -18.4 303 13 333.9 334.0 293.1 335.3 0.36 15 402 7562 -13.3 -31.3 20 18.0 -17.7 339 7 337.2 337.4 294.3 339.8 0.70 16 400 7600 -13.7 -31.7 20 18.0 -18.0 345 6 337.2 337.3 294.3 339.7 0.67 17 366 8269 -19.5 -32.5 31 13.0 -22.2 204 7 338.1 338.3 294.5 340.7 0.68 18 358 8434 -20.7 -40.7 15 20.0 -23.9 199 9 338.7 338.7 294.3 339.9 0.31 19 356 8475 -20.9 -49.9 6 29.0 -24.5 197 9 338.9 339.0 294.1 339.4 0.11 20 316 9347 -27.1 -61.1 2 34.0 -29.7 222 14 342.1 342.1 294.8 342.2 0.03 21 311 9462 -27.9 -60.9 3 33.0 -30.4 222 14 342.5 342.5 295.0 342.7 0.03 22 309 9508 -28.3 -37.3 42 9.0 -29.7 221 14 342.6 342.7 295.4 344.5 0.50 23 300 9720 -30.1 -39.1 41 9.0 -31.4 220 14 343.0 343.0 295.4 344.6 0.43 24 283 10132 -33.1 -37.5 65 4.4 -33.7 192 10 344.4 344.5 295.8 346.5 0.54 25 250 10990 -39.5 -45.5 53 6.0 -40.0 125 9 347.3 347.4 296.3 348.4 0.26 26 246 11100 -40.3 -47.3 47 7.0 -40.9 123 10 347.8 347.8 296.3 348.6 0.22 27 200 12470 -52.9 -55.4 74 2.5 -53.0 90 28 349.0 349.0 296.5 349.4 0.10 28 188 12867 -56.3 -63.3 41 7.0 -56.5 84 30 349.7 349.8 296.6 349.9 0.04 29 181 13107 -58.9 -62.1 66 3.2 -59.0 80 31 349.3 349.3 296.5 349.5 0.05 30 177 13247 -60.3 -67.3 39 7.0 -60.4 78 31 349.3 349.3 296.5 349.4 0.03 31 164 13719 -64.5 -69.5 50 5.0 -64.6 77 36 349.9 349.9 296.6 350.0 0.02 32 150 14260 -68.7 -73.2 52 4.5 -68.7 80 43 351.7 351.7 297.0 351.8 0.01 33 145 14462 -70.1 -74.3 54 4.2 -70.1 82 41 352.7 352.7 297.3 352.8 0.01 34 141 14627 -70.9 -76.9 41 6.0 -70.9 85 38 354.2 354.2 297.5 354.2 0.01 35 133 14972 -71.1 -82.1 18 11.0 -71.1 67 28 359.8 359.8 298.7 359.8 0.00 36 101 16554 -81.7 -88.7 29 7.0 -81.7 59 4 368.8 368.8 300.4 368.8 0.00 37 100 16610 -81.5 -88.5 29 7.0 -81.5 50 4 370.3 370.3 300.6 370.3 0.00 38 90 17197 -84.1 -91.1 28 7.0 -84.1 100 17 376.4 376.4 301.6 376.4 0.00 39 80 17848 -84.9 -90.9 33 6.0 -84.9 131 24 387.7 387.7 303.5 387.7 0.00 40 76 18131 -83.3 -91.3 24 8.0 -83.3 117 28 396.7 396.7 304.8 396.7 0.00 41 73 18359 -76.9 -87.9 16 11.0 -76.9 80 25 414.9 414.9 307.1 414.9 0.00 42 70 18600 -77.1 -89.1 13 12.0 -77.1 315 14 419.4 419.4 307.6 419.4 0.00 43 61 19386 -81.1 -90.1 20 9.0 -81.1 287 19 427.4 427.4 308.6 427.4 0.00 44 50 20540 -70.9 -89.9 4 19.0 -71.1 85 32 476.4 476.4 313.2 476.4 0.00 45 46 21031 -72.5 -90.5 5 18.0 -72.6 88 36 484.1 484.1 313.8 484.1 0.00 46 40 21862 -66.7 -90.7 2 24.0 -67.0 91 55 518.4 518.4 316.2 518.4 0.00 47 37 22331 -68.5 -91.5 2 23.0 -68.8 104 56 525.4 525.4 316.6 525.4 0.00 48 30 23600 -63.9 -90.9 1 27.0 -64.5 85 67 570.4 570.4 319.2 570.5 0.00 49 29 23811 -63.5 -91.5 1 28.0 -64.1 90 72 577.1 577.1 319.5 577.1 0.00 50 28 24029 -63.5 -91.5 1 28.0 -64.1 90 73 582.9 582.9 319.8 582.9 0.00 51 25 24743 -57.8 -89.5 1 31.7 -59.2 90 75 618.4 618.4 321.4 618.4 0.01 52 20 26200 -46.7 -85.7 0 39.0 -51.2 90 45 693.2 693.2 324.2 693.3 0.01 53 18 26904 -43.5 -83.5 0 40.0 -49.6 90 48 724.5 724.5 325.2 724.7 0.02 54 16 27689 -47.5 -86.5 0 39.0 -52.5 85 32 736.3 736.3 325.6 736.4 0.01 TRP 90 17197 -84.1 -91.1 28 7.0 -84.1 100 17 376.4 376.4 301.6 376.4 0.00 WND 25 24743 -57.8 -89.5 1 31.7 -59.2 90 75 618.4 618.4 321.4 618.4 0.01 Sounding variables and indices 1000-500 mb thick: 5795.00 m Freezing level: 571.24 mb = 4819.53 m = 15811.91 ft Wetbulb zero: 573.22 mb = 4790.40 m = 15716.35 ft Precipitable water: 2.19 inches Sfc-500 mean rel hum: 79.89 % Est. max temperature: 33.11 C = 91.60 F Sfc-Lift cond lev (LCL): 985.94 mb = 209.22 m = 686.40 ft T: 24.71 C 700-500 lapse rate: 5.39 C/km ThetaE index: 17.53 C Layer 925.0- 575.0 mb Conv cond level (CCL): 852.93 mb = 1476.01 m = 4842.49 ft Mean mixing ratio: 16.85 g/kg Conv temperature: 33.03 C = 91.46 F Cap Strength: 2.48 C Lifted Index: -2.21 C Risk: Severe thunderstorms possible Lifted Index @300 mb: -3.05 C Lifted Index @700 mb: -0.87 C Showalter Index: -0.66 C Risk: Thunderstorms probable Total Totals Index: 44.20 C Risk: Scattered moderate thunderstorms Vertical Totals Index: 23.50 C Cross Totals Index: 20.70 C K Index: 36.70 Risk: > 80 % chance of thunderstorms Sweat Index: 242.80 Risk: None Energy Index: -2.88 Risk: Severe Thunderstorms probable Parcel Indices Parcel: using 100 mb layer CAPE (B+): 996.37 J/kg Max Up Vert Vel: 44.64 m/s Conv Inhibition (B-): 64.20 J/kg Cap Strength: 2.48 C Lift Cond Lev (LCL): 898.92 mb = 1018.25 m = 3340.66 ft Lev Free Conv (LFC): 793.92 mb = 2090.06 m = 6857.06 ft Equ Level (EL): 143.92 mb = 14505.82 m = 47590.71 ft B at Equ Level: 980.73 J/kg Max Parcel Lev (MPL): 83.92 mb = 17583.13 m = 57686.74 ft Wind level data Storm motion: 353 at 8 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 1000 85 160 3 -1.0 2.8 | 170 11 -2.0 11.2 1 975 305 35 3 -1.7 -2.5 | 155 6 -2.7 5.9 2 942 610 340 10 3.4 -9.4 | 294 3 2.4 -1.1 3 925 769 340 9 3.1 -8.5 | 273 2 2.1 -0.1 4 910 914 340 15 5.1 -14.1 | 324 7 4.1 -5.8 5 878 1219 345 18 4.7 -17.4 | 338 10 3.7 -9.0 6 850 1506 360 17 -0.0 -17.0 | 7 9 -1.0 -8.7 7 818 1829 10 17 -3.0 -16.7 | 25 9 -4.0 -8.4 8 789 2134 10 16 -2.8 -15.8 | 27 8 -3.8 -7.4 9 762 2438 355 12 1.0 -12.0 | 359 4 0.0 -3.6 10 700 3153 325 7 4.0 -5.7 | 229 4 3.0 2.6 11 683 3353 300 10 8.7 -5.0 | 246 8 7.7 3.3 12 633 3962 315 10 7.1 -7.1 | 258 6 6.1 1.3 13 610 4267 240 10 8.7 5.0 | 210 15 7.7 13.3 14 525 5486 170 10 -1.7 9.8 | 171 18 -2.7 18.2 15 506 5791 185 12 1.0 12.0 | 180 20 0.0 20.3 16 500 5880 210 12 6.0 10.4 | 195 19 5.0 18.7 17 486 6096 210 11 5.5 9.5 | 194 18 4.5 17.9 18 467 6401 210 11 5.5 9.5 | 194 18 4.5 17.9 19 449 6706 275 13 13.0 -1.1 | 239 14 11.9 7.2 20 432 7010 305 10 8.2 -5.7 | 250 8 7.2 2.6 21 415 7315 300 13 11.3 -6.5 | 260 10 10.3 1.8 22 400 7600 345 6 1.6 -5.8 | 192 3 0.5 2.5 23 383 7925 285 4 3.9 -1.0 | 201 8 2.9 7.3 24 367 8230 205 7 3.0 6.3 | 188 15 2.0 14.7 25 352 8534 195 10 2.6 9.7 | 185 18 1.6 18.0 26 338 8839 225 13 9.2 9.2 | 205 19 8.2 17.5 27 300 9720 220 14 9.0 10.7 | 203 21 8.0 19.1 28 299 9754 220 14 9.0 10.7 | 203 21 8.0 19.1 29 251 10973 130 2 -1.5 1.3 | 165 10 -2.5 9.6 30 250 10990 125 9 -7.4 5.2 | 148 16 -8.4 13.5 31 239 11278 120 12 -10.4 6.0 | 142 18 -11.4 14.3 32 229 11582 100 20 -19.7 3.5 | 120 24 -20.7 11.8 33 209 12192 105 29 -28.0 7.5 | 119 33 -29.0 15.8 34 200 12470 90 28 -28.0 0.0 | 106 30 -29.0 8.3 35 172 13411 75 32 -30.9 -8.3 | 90 32 -31.9 0.1 36 150 14260 80 43 -42.3 -7.5 | 91 43 -43.4 0.9 37 148 14326 80 43 -42.3 -7.5 | 91 43 -43.4 0.9 38 141 14630 85 38 -37.9 -3.3 | 97 39 -38.9 5.0 39 120 15545 35 10 -5.7 -8.2 | 91 7 -6.7 0.2 40 114 15850 165 1 -0.3 1.0 | 172 9 -1.3 9.3 41 100 16610 50 4 -3.1 -2.6 | 145 7 -4.1 5.8 42 97 16764 50 4 -3.1 -2.6 | 145 7 -4.1 5.8 43 90 17197 100 17 -16.7 3.0 | 122 21 -17.7 11.3 44 87 17374 95 14 -13.9 1.2 | 123 18 -15.0 9.6 45 78 17983 140 27 -17.4 20.7 | 148 34 -18.4 29.0 46 74 18288 95 29 -28.9 2.5 | 110 32 -29.9 10.9 47 70 18593 35 12 -6.9 -9.8 | 79 8 -7.9 -1.5 48 70 18600 315 14 9.9 -9.9 | 280 9 8.9 -1.6 49 66 18898 330 13 6.5 -11.3 | 298 6 5.5 -2.9 50 63 19202 300 16 13.9 -8.0 | 268 13 12.8 0.3 51 60 19507 280 20 19.7 -3.5 | 255 19 18.7 4.9 52 57 19812 300 11 9.5 -5.5 | 252 9 8.5 2.8 53 54 20117 60 12 -10.4 -6.0 | 102 12 -11.4 2.3 54 51 20422 120 12 -10.4 6.0 | 142 18 -11.4 14.3 55 50 20540 85 32 -31.9 -2.8 | 100 33 -32.9 5.6 56 48 20726 90 26 -26.0 0.0 | 107 28 -27.0 8.3 57 42 21641 85 54 -53.8 -4.7 | 94 55 -54.8 3.6 58 36 22555 110 56 -52.6 19.2 | 117 60 -53.6 27.5 59 30 23600 85 67 -66.7 -5.8 | 92 68 -67.8 2.5 60 29 23774 90 72 -72.0 0.0 | 97 73 -73.0 8.3 61 25 24743 90 75 -75.0 0.0 | 96 76 -76.0 8.3 62 24 24994 90 75 -75.0 0.0 | 96 76 -76.0 8.3 63 20 26200 90 45 -45.0 0.0 | 100 47 -46.0 8.3 64 20 26213 95 63 -62.8 5.5 | 102 65 -63.8 13.8 65 14 27432 80 16 -15.8 -2.8 | 108 18 -16.8 5.6 66 13 27737 135 11 -7.8 7.8 | 151 18 -8.8 16.1 Wind Parameters Mean winds (0-6000m): 323.1 at 11.2 knts Storm direction: 353.1 at 8.4 knts Shear (0-3000m) pos: 1.3 neg: 2.7 tot: 4.0 10-3/s Storm rel Dir Shear (0-3000m): 66.2 deg Storm rel helicity (0-3000m) pos: 25.6 neg: -18.0 tot: 7.6 m^2/s^2 ave: 2.5 10^-3 m/s^2 rel: 0.09 Storm rel vorticity (0-3000m) horiz: 7.9 stream: 0.7 10^-3/s Energy-Hel index: 0.16 Bulk Rich Number: 106.38 Bulk Shear: 9.37 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 7 5 156 4| 0.0 12.8 12.8| 0.2 -9.6 -9.3 -18.7 0.03| 16.6 0.5 1000 345 9 269 1| 0.0 10.1 10.1| 5.2 -9.8 -4.6 -4.6 0.17| 12.5 2.1 1500 349 12 337 3| 2.0 6.7 8.7| 19.9 -9.8 10.1 6.7 0.33| 10.6 3.5 2000 355 13 360 5| 2.0 5.1 7.1| 25.6 -9.8 15.8 7.9 0.37| 8.7 3.3 2500 357 13 3 5| 1.6 3.6 5.2| 25.6 -14.9 10.7 4.3 0.21| 8.5 1.8 3000 355 12 358 4| 1.3 2.7 4.0| 25.6 -18.0 7.6 2.5 0.09| 7.9 0.7 4000 345 12 326 3| 1.0 2.5 3.5| 29.7 -24.3 5.4 1.3 0.06| 7.5 0.5 5000 334 11 295 4| 0.8 1.3 2.1| 29.7 -79.2 -49.5 -9.9 -0.14| 7.6 -1.0 6000 323 11 276 6| 0.1 0.9 1.1| 71.2 -99.8 -28.6 -4.8 -0.07| 7.5 -0.5 Wrote GIF file: /home/apache/climate/data/raob//SBTT/skewt/SBTT.skewt.20251223.12.gif