UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025120112.upa.cvt Date: 1200Z 1 DEC 25 Searching for SBTT... Searching the city database file for: SBTT ... Date:1200Z 1 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 1009 85 24.0 23.0 94 1.0 23.3 90 1 296.4 299.6 296.1 347.7 17.80 1 1000 160 25.0 23.6 92 1.4 24.0 90 1 298.1 301.5 297.1 352.4 18.65 2 976 375 26.2 22.0 78 4.2 23.2 23 6 301.4 304.6 297.1 352.4 17.30 3 958 539 25.8 20.8 74 5.0 22.2 7 8 302.6 305.7 296.8 351.0 16.35 4 925 848 23.4 20.6 84 2.8 21.4 5 10 303.2 306.3 297.3 352.9 16.74 5 850 1585 19.6 15.9 79 3.7 17.1 350 13 306.7 309.2 296.0 347.2 13.49 6 838 1708 19.6 14.6 73 5.0 16.2 349 12 307.9 310.3 295.7 345.9 12.57 7 738 2791 12.4 9.9 85 2.5 10.8 324 14 311.5 313.5 295.1 343.5 10.44 8 700 3234 10.6 7.0 78 3.6 8.4 315 14 314.2 315.9 294.8 342.3 9.02 9 660 3723 8.8 1.8 61 7.0 4.8 317 12 317.5 318.8 294.0 338.6 6.62 10 587 4683 2.2 -4.8 60 7.0 -1.3 302 11 320.7 321.6 293.2 335.5 4.56 11 522 5621 -4.3 -6.3 86 2.0 -5.3 256 12 323.8 324.7 294.0 338.9 4.58 12 500 5960 -5.5 -8.3 81 2.8 -6.8 230 7 326.3 327.1 294.3 340.0 4.09 13 400 7680 -16.3 -17.8 88 1.5 -16.8 75 14 333.8 334.3 294.8 342.1 2.36 14 376 8141 -19.7 -19.8 99 0.1 -19.7 87 14 335.3 335.7 295.0 342.8 2.12 15 346 8753 -22.7 -27.2 67 4.5 -23.8 140 8 339.3 339.5 295.2 343.7 1.19 16 323 9252 -26.7 -28.9 82 2.2 -27.2 159 11 340.5 340.7 295.4 344.5 1.09 17 309 9570 -28.5 -36.5 46 8.0 -29.8 164 13 342.3 342.4 295.4 344.4 0.54 18 301 9756 -30.1 -40.1 37 10.0 -31.4 196 12 342.6 342.7 295.3 344.2 0.39 19 300 9780 -30.3 -39.3 41 9.0 -31.6 200 12 342.7 342.8 295.4 344.3 0.42 20 281 10242 -34.5 -39.1 63 4.6 -35.1 226 13 343.1 343.2 295.5 344.9 0.46 21 271 10495 -36.3 -40.9 62 4.6 -36.8 240 13 344.1 344.2 295.7 345.6 0.40 22 260 10782 -38.7 -53.7 19 15.0 -39.6 250 15 344.6 344.7 295.5 345.1 0.10 23 250 11050 -41.1 -63.1 8 22.0 -42.0 250 21 345.0 345.0 295.6 345.1 0.03 24 249 11077 -41.5 -63.5 7 22.0 -42.4 250 21 344.8 344.8 295.5 344.9 0.03 25 239 11355 -43.7 -56.7 22 13.0 -44.3 254 21 345.5 345.5 295.7 345.8 0.07 26 238 11383 -43.9 -48.9 58 5.0 -44.2 254 21 345.6 345.7 295.8 346.4 0.19 27 232 11554 -45.1 -54.1 36 9.0 -45.6 256 21 346.3 346.4 295.9 346.8 0.11 28 224 11788 -47.1 -53.1 50 6.0 -47.4 259 21 346.8 346.8 296.0 347.3 0.12 29 205 12370 -51.9 -62.9 26 11.0 -52.2 245 20 348.1 348.1 296.3 348.3 0.04 30 200 12530 -53.7 -63.7 28 10.0 -53.9 240 19 347.7 347.7 296.1 347.9 0.04 31 183 13094 -58.9 -68.9 26 10.0 -59.0 242 24 348.2 348.2 296.3 348.3 0.02 32 180 13198 -59.3 -67.3 35 8.0 -59.4 243 25 349.2 349.2 296.5 349.3 0.02 33 174 13409 -59.9 -74.9 12 15.0 -60.0 244 28 351.6 351.6 297.0 351.7 0.01 34 150 14320 -67.3 -75.3 31 8.0 -67.4 250 41 354.2 354.2 297.5 354.2 0.01 35 144 14565 -69.5 -75.5 41 6.0 -69.5 246 40 354.5 354.5 297.6 354.5 0.01 36 125 15399 -74.9 -82.9 28 8.0 -74.9 255 21 359.3 359.3 298.5 359.3 0.00 37 100 16680 -79.7 -88.7 21 9.0 -79.7 185 5 373.7 373.7 301.2 373.7 0.00 38 82 17777 -89.3 -92.4 55 3.1 -89.3 90 22 375.9 375.9 301.6 375.9 0.00 39 72 18499 -78.3 -88.3 18 10.0 -78.3 64 24 413.5 413.5 306.9 413.5 0.00 40 70 18660 -78.7 -88.7 18 10.0 -78.7 190 7 416.0 416.0 307.2 416.0 0.00 41 57 19847 -71.9 -90.9 4 19.0 -72.0 133 10 456.6 456.6 311.5 456.6 0.00 42 50 20620 -70.9 -90.9 4 20.0 -71.1 100 35 476.4 476.4 313.2 476.4 0.00 43 45 21245 -69.5 -91.5 3 22.0 -69.7 86 35 494.4 494.4 314.5 494.4 0.00 44 35 22781 -59.1 -89.1 1 30.0 -60.0 92 44 558.4 558.4 318.6 558.4 0.00 45 30 23750 -57.7 -87.7 1 30.0 -58.9 100 53 587.3 587.3 320.0 587.4 0.01 46 24 25148 -60.9 -89.9 1 29.0 -61.9 86 62 616.7 616.7 321.3 616.8 0.00 47 20 26290 -57.6 -88.7 1 31.1 -59.3 75 63 659.8 659.8 323.0 659.8 0.01 48 17 27323 -54.7 -87.7 1 33.0 -57.3 78 63 700.6 700.6 324.4 700.6 0.01 49 16 27716 -49.3 -85.3 1 36.0 -53.6 80 63 730.4 730.4 325.4 730.6 0.02 50 13 29098 -42.5 -82.5 0 40.0 -50.3 81 57 798.7 798.7 327.2 799.0 0.03 51 11 30226 -42.5 -82.5 0 40.0 -51.0 61 26 837.8 837.8 328.1 838.1 0.04 TRP 82 17777 -89.3 -92.4 55 3.1 -89.3 90 22 375.9 375.9 301.6 375.9 0.00 WND 20 26290 -57.6 -88.7 1 31.1 -59.3 75 63 659.8 659.8 323.0 659.8 0.01 Sounding variables and indices 1000-500 mb thick: 5800.00 m Freezing level: 565.00 mb = 5000.26 m = 16404.85 ft Wetbulb zero: 602.21 mb = 4473.41 m = 14676.35 ft Precipitable water: 2.31 inches Sfc-500 mean rel hum: 75.13 % Est. max temperature: 33.89 C = 92.99 F Sfc-Lift cond lev (LCL): 994.81 mb = 205.99 m = 675.80 ft T: 25.26 C 700-500 lapse rate: 5.91 C/km ThetaE index: 17.40 C Layer 850.0- 522.0 mb Conv cond level (CCL): 832.14 mb = 1767.52 m = 5798.89 ft Mean mixing ratio: 17.04 g/kg Conv temperature: 35.76 C = 96.38 F Cap Strength: 2.07 C Lifted Index: -3.23 C Risk: Severe thunderstorms possible Lifted Index @300 mb: -3.02 C Lifted Index @700 mb: -0.55 C Showalter Index: -1.54 C Risk: Thunderstorms probable Total Totals Index: 46.50 C Risk: Scattered moderate thunderstorms Vertical Totals Index: 25.10 C Cross Totals Index: 21.40 C K Index: 37.40 Risk: > 80 % chance of thunderstorms Sweat Index: 223.80 Risk: None Energy Index: -1.45 Risk: Scattered severe thunderstorms Parcel Indices Parcel: using 100 mb layer CAPE (B+): 1165.08 J/kg Max Up Vert Vel: 48.27 m/s Conv Inhibition (B-): 88.83 J/kg Cap Strength: 2.07 C Lift Cond Lev (LCL): 912.48 mb = 966.76 m = 3171.76 ft Lev Free Conv (LFC): 757.48 mb = 2568.64 m = 8427.19 ft Equ Level (EL): 167.48 mb = 13643.70 m = 44762.26 ft B at Equ Level: 1159.61 J/kg Max Parcel Lev (MPL): 87.48 mb = 17419.64 m = 57150.35 ft Wind level data Storm motion: 348 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 1009 85 90 1 -1.0 0.0 | 161 8 -2.7 8.0 1 1000 160 90 1 -1.0 0.0 | 161 8 -2.7 8.0 2 984 305 30 5 -2.5 -4.3 | 131 6 -4.2 3.6 3 950 610 360 9 -0.0 -9.0 | 58 2 -1.7 -1.0 4 925 848 5 10 -0.9 -10.0 | 52 3 -2.5 -2.0 5 918 914 355 8 0.7 -8.0 | 89 1 -1.0 -0.0 6 850 1585 350 13 2.3 -12.8 | 353 5 0.6 -4.8 7 797 2134 345 10 2.6 -9.7 | 332 2 0.9 -1.7 8 769 2438 335 12 5.1 -10.9 | 311 4 3.4 -2.9 9 715 3048 315 15 10.6 -10.6 | 287 9 8.9 -2.7 10 700 3234 315 14 9.9 -9.9 | 283 8 8.2 -1.9 11 616 4267 320 9 5.8 -6.9 | 256 4 4.1 1.1 12 530 5486 265 14 13.9 1.2 | 233 15 12.3 9.2 13 500 5960 230 7 5.4 4.5 | 197 13 3.7 12.5 14 491 6096 235 7 5.7 4.0 | 199 13 4.1 12.0 15 454 6706 260 1 1.0 0.2 | 175 8 -0.7 8.1 16 419 7315 85 10 -10.0 -0.9 | 121 14 -11.6 7.1 17 403 7620 70 16 -15.0 -5.5 | 98 17 -16.7 2.5 18 400 7680 75 14 -13.5 -3.6 | 106 16 -15.2 4.3 19 371 8230 90 14 -14.0 0.0 | 117 18 -15.7 8.0 20 356 8534 130 10 -7.7 6.4 | 147 17 -9.3 14.4 21 341 8839 145 7 -4.0 5.7 | 157 15 -5.7 13.7 22 327 9144 165 10 -2.6 9.7 | 166 18 -4.3 17.6 23 314 9449 145 13 -7.5 10.6 | 154 21 -9.1 18.6 24 300 9780 200 12 4.1 11.3 | 187 19 2.4 19.2 25 264 10668 250 13 12.2 4.4 | 220 16 10.6 12.4 26 250 11050 250 21 19.7 7.2 | 230 24 18.1 15.1 27 220 11887 260 21 20.7 3.6 | 239 22 19.0 11.6 28 200 12530 240 19 16.5 9.5 | 220 23 14.8 17.5 29 191 12802 240 20 17.3 10.0 | 221 24 15.7 18.0 30 150 14320 250 41 38.5 14.0 | 239 43 36.9 22.0 31 150 14326 250 43 40.4 14.7 | 240 45 38.7 22.7 32 135 14935 240 34 29.4 17.0 | 228 37 27.8 25.0 33 122 15545 260 16 15.8 2.8 | 233 18 14.1 10.7 34 115 15850 280 17 16.7 -3.0 | 252 16 15.1 5.0 35 104 16459 305 12 9.8 -6.9 | 263 8 8.2 1.1 36 100 16680 185 5 0.4 5.0 | 175 13 -1.2 12.9 37 93 17069 155 3 -1.3 2.7 | 165 11 -2.9 10.7 38 83 17678 130 7 -5.4 4.5 | 151 14 -7.0 12.5 39 82 17777 90 22 -22.0 0.0 | 109 25 -23.7 8.0 40 75 18288 75 41 -39.6 -10.6 | 86 41 -41.3 -2.7 41 71 18593 60 17 -14.7 -8.5 | 88 16 -16.4 -0.5 42 70 18660 190 7 1.2 6.9 | 178 15 -0.4 14.8 43 67 18898 165 12 -3.1 11.6 | 166 20 -4.8 19.5 44 64 19202 135 20 -14.1 14.1 | 144 27 -15.8 22.1 45 61 19507 150 5 -2.5 4.3 | 161 13 -4.2 12.3 46 55 20117 120 13 -11.3 6.5 | 138 19 -12.9 14.5 47 52 20422 125 19 -15.6 10.9 | 138 26 -17.2 18.9 48 50 20620 100 35 -34.5 6.1 | 111 39 -36.1 14.0 49 44 21336 85 35 -34.9 -3.1 | 98 37 -36.5 4.9 50 42 21641 80 44 -43.3 -7.6 | 90 45 -45.0 0.3 51 40 21946 85 35 -34.9 -3.1 | 98 37 -36.5 4.9 52 30 23750 100 53 -52.2 9.2 | 108 57 -53.9 17.2 53 28 24079 100 53 -52.2 9.2 | 108 57 -53.9 17.2 54 26 24689 90 61 -61.0 0.0 | 97 63 -62.7 8.0 55 20 26290 75 63 -60.9 -16.3 | 82 63 -62.5 -8.4 56 19 26518 75 63 -60.9 -16.3 | 82 63 -62.5 -8.4 57 13 27737 85 63 -62.8 -5.5 | 92 64 -64.4 2.5 58 10 28651 55 17 -13.9 -9.8 | 83 16 -15.6 -1.8 59 10 28956 50 10 -7.7 -6.4 | 99 9 -9.3 1.5 60 9 29261 210 10 5.0 8.7 | 191 17 3.3 16.6 61 8 29566 205 12 5.1 10.9 | 190 19 3.4 18.8 62 8 29870 110 10 -9.4 3.4 | 136 16 -11.1 11.4 63 7 30175 100 15 -14.8 2.6 | 123 20 -16.4 10.6 Wind Parameters Mean winds (0-6000m): 318.2 at 10.8 knts Storm direction: 348.2 at 8.1 knts Shear (0-3000m) pos: 0.0 neg: 2.7 tot: 2.7 10-3/s Storm rel Dir Shear (0-3000m): 124.5 deg Storm rel helicity (0-3000m) pos: 0.2 neg: -19.8 tot: -19.6 m^2/s^2 ave: -6.5 10^-3 m/s^2 rel: -0.53 Storm rel vorticity (0-3000m) horiz: 4.9 stream: -2.6 10^-3/s Energy-Hel index: 0.00 Bulk Rich Number: 98.24 Bulk Shear: 11.86 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 19 5 136 5| 0.0 8.9 8.9| 0.0 -10.8 -10.8 -21.5 -0.76| 10.3 -7.8 1000 6 7 114 3| 0.0 4.9 4.9| 0.2 -11.4 -11.2 -11.2 -0.63| 7.2 -4.5 1500 359 8 75 2| 0.0 4.5 4.5| 0.2 -12.5 -12.4 -8.2 -0.58| 6.1 -3.5 2000 355 9 38 2| 0.0 2.7 2.7| 0.2 -13.4 -13.3 -6.6 -0.54| 5.3 -2.9 2500 351 10 7 2| 0.0 2.7 2.7| 0.2 -15.3 -15.1 -6.0 -0.53| 5.1 -2.7 3000 344 10 331 2| 0.0 2.7 2.7| 0.2 -19.8 -19.6 -6.5 -0.53| 4.9 -2.6 4000 336 11 306 3| 0.6 2.0 2.6| 0.2 -24.1 -23.9 -6.0 -0.53| 4.4 -2.3 5000 329 11 289 4| 0.5 1.9 2.4| 0.2 -29.6 -29.4 -5.9 -0.48| 4.3 -2.1 6000 318 11 271 6| 0.4 0.9 1.4| 1.4 -72.9 -71.4 -11.9 -0.56| 4.8 -2.7 Wrote GIF file: /home/apache/climate/data/raob//SBTT/skewt/SBTT.skewt.20251201.12.gif