UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025041712.upa.cvt Date: 1200Z 17 APR 25 Searching for SBTT... Searching the city database file for: SBTT ... Date:1200Z 17 APR 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 1002 85 24.4 23.4 94 1.0 23.7 70 2 297.4 300.7 296.8 350.7 18.38 1 1000 102 24.6 23.5 94 1.1 23.8 10 5 297.8 301.1 297.0 351.6 18.53 2 982 262 26.2 22.9 82 3.3 23.8 22 7 300.9 304.2 297.6 354.4 18.19 3 937 676 24.2 20.2 78 4.0 21.3 56 10 302.9 305.9 296.8 350.6 16.10 4 925 789 23.4 20.0 81 3.4 21.0 50 9 303.2 306.2 296.8 351.0 16.11 5 883 1194 20.0 19.9 99 0.1 19.9 69 10 303.8 306.9 297.4 353.7 16.79 6 850 1523 18.0 17.3 96 0.7 17.5 65 12 305.0 307.7 296.4 349.1 14.78 7 710 3045 9.0 9.0 100 0.0 9.0 76 15 311.2 313.1 294.9 342.5 10.21 8 700 3163 8.4 8.4 100 0.0 8.4 75 14 311.8 313.7 294.9 342.4 9.94 9 637 3942 6.0 3.4 83 2.6 4.5 73 15 317.6 319.1 294.8 341.9 7.70 10 610 4297 4.0 -0.3 74 4.3 1.7 90 14 319.2 320.4 294.1 338.9 6.15 11 570 4848 1.2 -2.1 79 3.3 -0.6 87 13 322.2 323.3 294.6 340.9 5.76 12 510 5734 -6.1 -6.1 100 0.0 -6.1 76 13 323.8 324.7 294.1 339.4 4.76 13 503 5843 -4.9 -7.7 81 2.8 -6.2 80 14 326.5 327.4 294.5 340.7 4.26 14 500 5890 -5.3 -8.1 81 2.8 -6.6 85 14 326.6 327.4 294.4 340.5 4.16 15 497 5937 -5.1 -9.8 70 4.7 -7.2 86 14 327.4 328.1 294.3 339.7 3.66 16 469 6389 -8.3 -10.6 83 2.3 -9.3 99 11 328.9 329.6 294.6 341.2 3.64 17 438 6917 -9.9 -24.9 28 15.0 -14.3 92 17 333.4 333.6 293.7 337.5 1.16 18 400 7610 -14.5 -24.5 42 10.0 -17.4 120 15 336.1 336.4 294.6 340.9 1.31 19 398 7648 -14.9 -24.9 42 10.0 -17.7 120 15 336.1 336.4 294.5 340.7 1.27 20 385 7899 -15.7 -29.7 29 14.0 -19.1 120 14 338.3 338.4 294.7 341.4 0.85 21 360 8401 -19.9 -32.9 30 13.0 -22.7 123 11 339.2 339.3 294.7 341.7 0.67 22 331 9019 -24.1 -40.1 21 16.0 -26.6 96 12 341.7 341.8 295.1 343.1 0.35 23 324 9175 -25.3 -34.3 43 9.0 -27.0 93 14 342.1 342.3 295.4 344.6 0.65 24 305 9612 -28.1 -45.1 18 17.0 -30.2 83 19 344.1 344.2 295.5 345.1 0.22 25 300 9730 -28.9 -43.9 22 15.0 -30.8 80 20 344.6 344.7 295.7 345.7 0.26 26 297 9802 -29.5 -42.5 27 13.0 -31.2 80 20 344.8 344.9 295.7 346.0 0.30 27 295 9850 -29.9 -34.9 62 5.0 -30.7 80 20 344.9 345.0 296.1 347.5 0.67 28 293 9899 -30.1 -38.1 46 8.0 -31.3 80 20 345.3 345.4 296.0 347.2 0.49 29 281 10195 -32.5 -35.1 78 2.6 -32.9 83 22 346.0 346.1 296.3 348.7 0.69 30 264 10633 -36.1 -39.9 68 3.8 -36.5 94 27 346.9 347.0 296.4 348.7 0.45 31 260 10739 -36.3 -43.3 48 7.0 -37.1 92 29 348.2 348.2 296.5 349.5 0.32 32 250 11010 -38.7 -42.7 66 4.0 -39.1 80 31 348.5 348.6 296.6 350.0 0.35 33 248 11065 -39.3 -42.6 71 3.3 -39.6 79 32 348.4 348.5 296.6 349.9 0.36 34 233 11488 -42.7 -46.0 70 3.3 -43.0 74 31 349.6 349.6 296.8 350.6 0.27 35 218 11934 -45.7 -57.7 25 12.0 -46.2 71 18 351.6 351.6 297.1 351.9 0.07 36 207 12276 -49.1 -62.1 21 13.0 -49.5 52 8 351.5 351.6 297.0 351.7 0.04 37 200 12500 -51.1 -63.1 23 12.0 -51.4 360 1 351.8 351.9 297.1 352.0 0.04 38 187 12933 -54.5 -69.5 14 15.0 -54.8 303 5 353.2 353.2 297.3 353.3 0.02 39 183 13070 -55.7 -67.7 21 12.0 -55.9 239 9 353.4 353.4 297.4 353.5 0.02 40 180 13175 -56.5 -60.8 58 4.3 -56.6 213 10 353.8 353.8 297.5 354.1 0.06 41 172 13461 -59.3 -68.3 30 9.0 -59.5 204 11 353.8 353.8 297.5 353.9 0.02 42 150 14300 -67.3 -71.8 53 4.5 -67.4 150 9 354.2 354.2 297.5 354.2 0.02 43 143 14586 -70.1 -74.1 56 4.0 -70.1 148 9 354.1 354.1 297.5 354.2 0.01 44 101 16575 -85.7 -89.7 48 4.0 -85.7 227 4 361.1 361.1 298.9 361.1 0.00 45 100 16630 -86.1 -89.9 50 3.8 -86.1 215 1 361.4 361.4 299.0 361.4 0.00 46 97 16796 -86.9 -90.9 48 4.0 -86.9 130 4 363.0 363.0 299.3 363.0 0.00 47 87 17394 -84.5 -92.5 23 8.0 -84.5 150 22 379.3 379.3 302.1 379.3 0.00 48 84 17592 -75.5 -87.5 14 12.0 -75.5 150 19 401.4 401.4 305.4 401.4 0.00 49 81 17802 -75.9 -90.9 8 15.0 -75.9 186 17 404.8 404.8 305.8 404.8 0.00 50 71 18559 -78.3 -90.3 13 12.0 -78.3 232 12 415.2 415.2 307.2 415.2 0.00 51 70 18640 -78.1 -90.1 13 12.0 -78.1 225 9 417.3 417.3 307.4 417.3 0.00 52 50 20620 -65.5 -90.5 2 25.0 -65.8 285 29 489.1 489.1 314.1 489.1 0.00 53 41 21833 -63.3 -90.3 1 27.0 -63.8 260 30 523.2 523.2 316.5 523.2 0.00 54 37 22462 -64.9 -90.9 2 26.0 -65.3 256 22 534.7 534.7 317.2 534.7 0.00 55 34 22984 -59.5 -89.5 1 30.0 -60.4 271 20 562.0 562.0 318.8 562.0 0.00 TRP 97 16796 -86.9 -90.9 48 4.0 -86.9 130 4 363.0 363.0 299.3 363.0 0.00 WND Sounding variables and indices 1000-500 mb thick: 5788.00 m Freezing level: 560.14 mb = 4993.34 m = 16382.14 ft Wetbulb zero: 580.17 mb = 4704.02 m = 15432.95 ft Precipitable water: 2.39 inches Sfc-500 mean rel hum: 89.74 % Est. max temperature: 31.95 C = 89.51 F Sfc-Lift cond lev (LCL): 987.93 mb = 209.15 m = 686.16 ft T: 25.67 C 700-500 lapse rate: 5.02 C/km ThetaE index: 14.77 C Layer 850.0- 570.0 mb Conv cond level (CCL): 885.46 mb = 1169.83 m = 3837.99 ft Mean mixing ratio: 17.05 g/kg Conv temperature: 30.77 C = 87.38 F Cap Strength: 1.51 C Lifted Index: -3.15 C Risk: Severe thunderstorms possible Lifted Index @300 mb: -1.73 C Lifted Index @700 mb: -2.81 C Showalter Index: -2.04 C Risk: Severe thunderstorms possible Total Totals Index: 45.90 C Risk: Scattered moderate thunderstorms Vertical Totals Index: 23.30 C Cross Totals Index: 22.60 C K Index: 40.60 Risk: > 80 % chance of thunderstorms Sweat Index: 245.60 Risk: None Energy Index: -1.77 Risk: Scattered severe thunderstorms Parcel Indices Parcel: using 100 mb layer CAPE (B+): 802.23 J/kg Max Up Vert Vel: 40.06 m/s Conv Inhibition (B-): 21.18 J/kg Cap Strength: 1.51 C Lift Cond Lev (LCL): 909.73 mb = 934.16 m = 3064.80 ft Lev Free Conv (LFC): 854.73 mb = 1475.13 m = 4839.60 ft Equ Level (EL): 214.73 mb = 12033.77 m = 39480.39 ft B at Equ Level: 799.83 J/kg Max Parcel Lev (MPL): 84.73 mb = 17543.59 m = 57557.00 ft Wind level data Storm motion: 106 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 1002 85 70 2 -1.9 -0.7 | 295 8 7.3 -3.3 1 1000 102 10 5 -0.9 -4.9 | 312 11 8.3 -7.6 2 977 305 25 8 -3.4 -7.3 | 330 12 5.8 -9.9 3 944 610 60 10 -8.7 -5.0 | 356 8 0.6 -7.7 4 925 789 50 9 -6.9 -5.8 | 345 9 2.3 -8.4 5 912 914 55 8 -6.6 -4.6 | 340 8 2.7 -7.3 6 880 1219 70 10 -9.4 -3.4 | 2 6 -0.2 -6.1 7 850 1523 65 12 -10.9 -5.1 | 12 8 -1.7 -7.7 8 850 1524 60 12 -10.4 -6.0 | 8 9 -1.2 -8.7 9 820 1829 90 11 -11.0 0.0 | 34 3 -1.8 -2.7 10 791 2134 70 12 -11.3 -4.1 | 17 7 -2.1 -6.8 11 763 2438 75 15 -14.5 -3.9 | 39 8 -5.3 -6.5 12 736 2743 80 17 -16.7 -3.0 | 53 9 -7.5 -5.6 13 700 3163 75 14 -13.5 -3.6 | 34 8 -4.3 -6.3 14 659 3658 60 16 -13.9 -8.0 | 24 12 -4.6 -10.7 15 611 4267 90 14 -14.0 0.0 | 61 5 -4.8 -2.7 16 588 4572 100 15 -14.8 2.6 | 89 6 -5.6 -0.1 17 567 4877 85 13 -13.0 -1.1 | 45 5 -3.7 -3.8 18 546 5182 105 12 -11.6 3.1 | 101 2 -2.4 0.4 19 526 5486 80 13 -12.8 -2.3 | 36 6 -3.6 -4.9 20 506 5791 75 13 -12.6 -3.4 | 29 7 -3.3 -6.0 21 500 5890 85 14 -13.9 -1.2 | 51 6 -4.7 -3.9 22 487 6096 90 14 -14.0 0.0 | 61 5 -4.8 -2.7 23 468 6401 100 11 -10.8 1.9 | 65 2 -1.6 -0.8 24 432 7010 90 18 -18.0 0.0 | 73 9 -8.8 -2.7 25 400 7610 120 15 -13.0 7.5 | 142 6 -3.8 4.8 26 383 7925 120 14 -12.1 7.0 | 146 5 -2.9 4.3 27 368 8230 115 12 -10.9 5.1 | 145 3 -1.7 2.4 28 353 8534 130 10 -7.7 6.4 | 202 4 1.6 3.8 29 339 8839 100 10 -9.8 1.7 | 34 1 -0.6 -0.9 30 300 9730 80 20 -19.7 -3.5 | 60 12 -10.5 -6.1 31 286 10058 80 20 -19.7 -3.5 | 60 12 -10.5 -6.1 32 262 10668 95 28 -27.9 2.4 | 89 19 -18.7 -0.2 33 250 11010 80 31 -30.5 -5.4 | 69 23 -21.3 -8.0 34 240 11278 75 37 -35.7 -9.6 | 65 29 -26.5 -12.2 35 209 12192 70 10 -9.4 -3.4 | 2 6 -0.2 -6.1 36 200 12500 360 1 -0.0 -1.0 | 292 10 9.2 -3.7 37 191 12802 360 1 -0.0 -1.0 | 292 10 9.2 -3.7 38 182 13106 215 10 5.7 8.2 | 250 16 15.0 5.5 39 165 13716 195 12 3.1 11.6 | 234 15 12.3 8.9 40 157 14021 175 11 -1.0 11.0 | 225 12 8.3 8.3 41 150 14300 150 9 -4.5 7.8 | 223 7 4.7 5.1 42 134 14935 145 10 -5.7 8.2 | 212 7 3.5 5.5 43 121 15545 240 11 9.5 5.5 | 261 19 18.7 2.8 44 103 16459 250 10 9.4 3.4 | 268 19 18.6 0.8 45 100 16630 215 1 0.6 0.8 | 281 10 9.8 -1.8 46 98 16764 215 1 0.6 0.8 | 281 10 9.8 -1.8 47 97 16796 130 4 -3.1 2.6 | 271 6 6.2 -0.1 48 88 17374 150 23 -11.5 19.9 | 172 17 -2.3 17.3 49 83 17678 150 18 -9.0 15.6 | 181 13 0.2 12.9 50 79 17983 230 16 12.3 10.3 | 250 23 21.5 7.6 51 74 18288 255 20 19.3 5.2 | 265 29 28.5 2.5 52 70 18640 225 9 6.4 6.4 | 257 16 15.6 3.7 53 67 18898 215 10 5.7 8.2 | 250 16 15.0 5.5 54 64 19202 325 14 8.0 -11.5 | 309 22 17.2 -14.1 55 60 19507 300 19 16.5 -9.5 | 295 28 25.7 -12.2 56 57 19812 315 19 13.4 -13.4 | 305 28 22.7 -16.1 57 54 20117 290 28 26.3 -9.6 | 289 38 35.5 -12.2 58 50 20620 285 29 28.0 -7.5 | 285 39 37.2 -10.2 59 43 21336 280 32 31.5 -5.6 | 281 42 40.7 -8.2 60 40 21641 250 29 27.3 9.9 | 259 37 36.5 7.3 61 35 22250 260 18 17.7 3.1 | 269 27 26.9 0.5 62 33 22555 280 21 20.7 -3.6 | 282 31 29.9 -6.3 63 31 22860 230 11 8.4 7.1 | 256 18 17.6 4.4 64 29 23165 240 6 5.2 3.0 | 269 14 14.4 0.3 65 24 24079 235 10 8.2 5.7 | 260 18 17.4 3.1 Wind Parameters Mean winds (0-6000m): 76.1 at 12.8 knts Storm direction: 106.1 at 9.6 knts Shear (0-3000m) pos: 1.3 neg: 1.2 tot: 2.5 10-3/s Storm rel Dir Shear (0-3000m): 103.8 deg Storm rel helicity (0-3000m) pos: 46.1 neg: -9.6 tot: 36.5 m^2/s^2 ave: 12.2 10^-3 m/s^2 rel: 0.45 Storm rel vorticity (0-3000m) horiz: 6.0 stream: 2.7 10^-3/s Energy-Hel index: 0.18 Bulk Rich Number: 80.15 Bulk Shear: 10.01 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 34 8 332 10| 0.0 8.1 8.1| 26.9 0.0 26.9 53.8 0.81| 13.1 10.6 1000 46 8 339 9| 0.6 4.1 4.7| 29.3 -3.9 25.4 25.4 0.58| 8.6 5.0 1500 55 9 348 8| 0.9 2.7 3.6| 33.6 -3.9 29.7 19.8 0.61| 6.9 4.2 2000 62 10 355 7| 0.9 2.0 3.0| 36.2 -5.2 31.0 15.5 0.48| 6.9 3.3 2500 65 11 3 7| 1.6 1.6 3.2| 44.0 -5.2 38.8 15.5 0.53| 6.5 3.4 3000 69 12 12 7| 1.3 1.2 2.5| 46.1 -9.6 36.5 12.2 0.45| 6.0 2.7 4000 69 12 18 8| 1.3 1.2 2.6| 54.5 -14.7 39.8 10.0 0.38| 5.8 2.2 5000 74 13 26 7| 1.5 1.0 2.4| 62.9 -20.0 42.9 8.6 0.34| 5.8 2.0 6000 76 13 29 7| 1.5 1.2 2.6| 69.3 -25.4 43.9 7.3 0.28| 5.8 1.6 Wrote GIF file: /home/apache/climate/data/raob//SBTT/skewt/SBTT.skewt.20250417.12.gif