UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025042912.upa.cvt Date: 1200Z 29 APR 25 Searching for SBTT... Searching the city database file for: SBTT ... Date:1200Z 29 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 25.0 24.0 94 1.0 24.3 110 2 298.0 301.4 297.4 353.4 19.07 1 1000 102 25.0 23.9 94 1.1 24.2 140 2 298.1 301.6 297.4 353.4 19.00 2 953 525 22.2 22.2 100 0.0 22.2 210 11 299.4 302.7 297.0 351.9 17.95 3 925 785 21.2 21.2 100 0.0 21.2 245 8 301.0 304.2 297.1 352.1 17.39 4 857 1446 18.6 17.1 91 1.5 17.6 45 3 304.9 307.6 296.2 348.1 14.47 5 850 1517 17.8 16.7 93 1.1 17.1 70 4 304.8 307.4 296.0 347.2 14.21 6 765 2413 12.0 11.9 99 0.1 11.9 92 10 307.9 310.0 295.0 342.7 11.52 7 747 2613 11.2 11.2 100 0.0 11.2 96 14 309.1 311.2 295.1 343.3 11.26 8 725 2864 11.4 6.4 71 5.0 8.4 103 18 312.0 313.5 293.7 337.8 8.35 9 700 3157 9.4 8.4 93 1.0 8.8 110 18 312.9 314.8 295.2 343.6 9.94 10 698 3181 9.4 8.7 95 0.7 9.0 110 18 313.2 315.1 295.4 344.6 10.18 11 688 3301 10.0 6.8 80 3.2 8.0 110 18 315.1 316.9 295.1 343.4 9.05 12 642 3874 6.0 5.2 95 0.8 5.5 103 17 316.9 318.5 295.3 344.2 8.68 13 532 5397 -1.1 -5.1 74 4.0 -3.1 97 16 325.9 326.8 294.8 342.2 4.93 14 500 5890 -4.9 -7.8 80 2.9 -6.2 90 19 327.1 327.9 294.6 341.3 4.26 15 443 6831 -10.9 -13.8 79 2.9 -12.1 97 20 331.0 331.6 294.6 341.2 2.97 16 402 7572 -14.1 -24.1 42 10.0 -17.0 109 21 336.2 336.5 294.6 341.1 1.36 17 400 7610 -14.3 -22.3 51 8.0 -16.8 110 21 336.4 336.7 294.8 342.2 1.60 18 394 7724 -15.3 -17.3 85 2.0 -16.0 111 21 336.6 337.1 295.6 345.4 2.50 19 390 7801 -15.5 -26.5 38 11.0 -18.5 112 21 337.3 337.5 294.7 341.4 1.12 20 385 7899 -16.3 -20.8 68 4.5 -17.7 112 21 337.5 337.9 295.3 344.3 1.89 21 383 7938 -16.5 -26.5 42 10.0 -19.2 113 21 337.7 337.9 294.8 341.9 1.14 22 380 7997 -16.7 -26.7 42 10.0 -19.4 113 21 338.2 338.4 294.9 342.4 1.13 23 373 8136 -17.5 -19.6 84 2.1 -18.2 114 21 339.0 339.4 295.9 346.7 2.17 24 371 8176 -17.9 -20.4 81 2.5 -18.7 114 21 338.9 339.4 295.8 346.3 2.04 25 338 8866 -22.9 -35.9 29 13.0 -25.3 95 20 341.3 341.4 295.1 343.3 0.53 26 300 9730 -28.7 -36.7 46 8.0 -30.0 75 16 344.9 345.0 296.0 347.1 0.55 27 284 10121 -31.9 -50.9 13 19.0 -33.6 81 18 345.8 345.8 295.8 346.3 0.13 28 261 10713 -36.9 -47.9 31 11.0 -37.8 88 21 346.9 346.9 296.1 347.7 0.19 29 251 10983 -39.1 -60.1 9 21.0 -40.2 99 21 347.5 347.5 296.1 347.7 0.05 30 250 11010 -39.3 -60.3 9 21.0 -40.4 100 21 347.6 347.6 296.1 347.8 0.05 31 227 11661 -44.9 -65.9 8 21.0 -45.6 98 23 348.8 348.8 296.4 348.9 0.02 32 211 12143 -49.3 -59.3 30 10.0 -49.7 96 25 349.3 349.3 296.5 349.6 0.06 33 200 12490 -52.5 -64.5 22 12.0 -52.8 95 26 349.6 349.6 296.6 349.8 0.03 34 193 12719 -54.5 -67.5 19 13.0 -54.8 98 28 350.0 350.0 296.7 350.1 0.02 35 186 12954 -56.7 -62.7 47 6.0 -56.8 101 29 350.2 350.2 296.7 350.4 0.04 36 181 13126 -58.3 -60.1 80 1.8 -58.3 103 31 350.3 350.3 296.8 350.6 0.06 37 156 14044 -66.5 -72.5 43 6.0 -66.5 107 32 351.6 351.6 297.0 351.6 0.01 38 150 14280 -68.3 -74.3 42 6.0 -68.4 105 30 352.4 352.4 297.2 352.5 0.01 39 138 14776 -72.7 -76.6 55 3.9 -72.7 101 27 353.2 353.2 297.3 353.2 0.01 40 107 16231 -83.5 -88.3 43 4.8 -83.5 75 27 359.4 359.4 298.6 359.4 0.00 41 100 16610 -80.9 -87.9 30 7.0 -80.9 90 35 371.4 371.4 300.8 371.4 0.00 42 94 16961 -76.1 -88.1 13 12.0 -76.2 95 23 387.5 387.5 303.4 387.5 0.00 43 81 17811 -78.7 -89.7 15 11.0 -78.7 215 20 399.0 399.0 305.0 399.0 0.00 44 70 18650 -73.7 -89.7 7 16.0 -73.7 265 21 426.7 426.7 308.5 426.7 0.00 45 57 19866 -68.5 -90.5 3 22.0 -68.7 276 46 464.3 464.3 312.1 464.3 0.00 46 50 20650 -69.3 -91.3 3 22.0 -69.5 275 39 480.2 480.2 313.5 480.2 0.00 47 48 20894 -70.3 -91.3 3 21.0 -70.5 280 37 483.4 483.4 313.7 483.4 0.00 48 46 21150 -66.1 -92.1 1 26.0 -66.4 285 34 499.5 499.5 314.9 499.5 0.00 49 40 21998 -66.9 -91.9 2 25.0 -67.2 298 26 517.9 517.9 316.2 517.9 0.00 50 39 22152 -63.3 -92.3 1 29.0 -63.8 294 24 530.7 530.7 316.9 530.7 0.00 51 36 22647 -61.7 -90.7 1 29.0 -62.3 280 18 547.1 547.1 317.9 547.2 0.00 52 31 23575 -61.3 -91.3 1 30.0 -62.1 251 16 572.1 572.1 319.3 572.2 0.00 53 30 23780 -59.3 -91.3 1 32.0 -60.3 60 12 583.0 583.0 319.8 583.0 0.00 54 27 24441 -56.7 -89.7 1 33.0 -58.2 107 21 608.1 608.1 321.0 608.1 0.00 55 26 24679 -58.3 -90.3 1 32.0 -59.6 115 32 610.2 610.2 321.0 610.2 0.00 56 25 24927 -53.5 -89.5 0 36.0 -55.6 107 36 630.8 630.8 321.9 630.9 0.01 57 20 26360 -53.1 -89.1 0 36.0 -55.8 95 56 673.6 673.6 323.6 673.7 0.01 58 20 26360 -52.9 -89.9 0 37.0 -55.6 95 56 674.3 674.3 323.6 674.3 0.01 59 19 26692 -51.5 -89.0 0 37.5 -54.7 85 60 688.4 688.5 324.0 688.5 0.01 60 18 27044 -50.1 -88.1 0 38.0 -53.8 97 56 703.7 703.7 324.6 703.8 0.01 61 16 27811 -51.5 -88.5 0 37.0 -55.1 83 53 723.3 723.3 325.1 723.3 0.01 TRP 107 16231 -83.5 -88.3 43 4.8 -83.5 75 27 359.4 359.4 298.6 359.4 0.00 WND 19 26692 -51.5 -89.0 0 37.5 -54.7 85 60 688.4 688.5 324.0 688.5 0.01 Sounding variables and indices 1000-500 mb thick: 5788.00 m Freezing level: 549.04 mb = 5161.16 m = 16932.74 ft Wetbulb zero: 571.41 mb = 4817.90 m = 15806.56 ft Precipitable water: 2.43 inches Sfc-500 mean rel hum: 89.33 % Est. max temperature: 31.85 C = 89.33 F Sfc-Lift cond lev (LCL): 987.97 mb = 208.31 m = 683.41 ft T: 24.30 C 700-500 lapse rate: 5.23 C/km ThetaE index: 9.38 C Layer 857.0- 747.0 mb Conv cond level (CCL): 950.81 mb = 544.88 m = 1787.65 ft Mean mixing ratio: 17.88 g/kg Conv temperature: 26.58 C = 79.85 F Cap Strength: 0.01 C Lifted Index: -2.75 C Risk: Severe thunderstorms possible Lifted Index @300 mb: -1.53 C Lifted Index @700 mb: -1.81 C Showalter Index: -0.94 C Risk: Thunderstorms probable Total Totals Index: 44.30 C Risk: Scattered moderate thunderstorms Vertical Totals Index: 22.70 C Cross Totals Index: 21.60 C K Index: 38.40 Risk: > 80 % chance of thunderstorms Sweat Index: 227.40 Risk: None Energy Index: -1.22 Risk: Scattered severe thunderstorms Parcel Indices Parcel: using 100 mb layer CAPE (B+): 864.92 J/kg Max Up Vert Vel: 41.59 m/s Conv Inhibition (B-): 0.00 J/kg Cap Strength: 0.01 C Lift Cond Lev (LCL): 947.06 mb = 579.41 m = 1900.93 ft Lev Free Conv (LFC): 942.06 mb = 625.59 m = 2052.44 ft Equ Level (EL): 862.06 mb = 1395.43 m = 4578.14 ft B at Equ Level: 17.31 J/kg Max Parcel Lev (MPL): 92.06 mb = 17080.40 m = 56037.38 ft Wind level data Storm motion: 130 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 85 110 2 -1.9 0.7 | 315 8 5.6 -5.7 1 1000 102 140 2 -1.3 1.5 | 308 8 6.2 -4.8 2 977 305 185 6 0.5 6.0 | 273 8 8.0 -0.4 3 944 610 220 13 8.4 10.0 | 257 16 15.8 3.6 4 925 785 245 8 7.3 3.4 | 281 15 14.7 -3.0 5 911 914 250 7 6.6 2.4 | 286 15 14.1 -4.0 6 880 1219 325 1 0.6 -0.8 | 312 11 8.1 -7.2 7 850 1517 70 4 -3.8 -1.4 | 334 9 3.7 -7.7 8 819 1829 90 10 -10.0 0.0 | 22 7 -2.5 -6.4 9 790 2134 105 13 -12.6 3.4 | 59 6 -5.1 -3.0 10 762 2438 90 10 -10.0 0.0 | 22 7 -2.5 -6.4 11 735 2743 100 18 -17.7 3.1 | 72 11 -10.2 -3.3 12 700 3157 110 18 -16.9 6.2 | 89 9 -9.4 -0.2 13 683 3353 110 18 -16.9 6.2 | 89 9 -9.4 -0.2 14 658 3658 110 17 -16.0 5.8 | 86 9 -8.5 -0.6 15 611 4267 90 17 -17.0 0.0 | 56 11 -9.5 -6.4 16 588 4572 75 15 -14.5 -3.9 | 34 12 -7.0 -10.3 17 546 5182 105 15 -14.5 3.9 | 70 7 -7.0 -2.5 18 506 5791 80 17 -16.7 -3.0 | 45 13 -9.3 -9.3 19 500 5890 90 19 -19.0 0.0 | 61 13 -11.5 -6.4 20 487 6096 85 19 -18.9 -1.7 | 55 14 -11.4 -8.0 21 400 7610 110 21 -19.7 7.2 | 94 12 -12.3 0.8 22 368 8230 115 21 -19.0 8.9 | 102 12 -11.5 2.5 23 325 9144 85 19 -18.9 -1.7 | 55 14 -11.4 -8.0 24 300 9730 75 16 -15.5 -4.1 | 37 13 -8.0 -10.5 25 299 9754 90 16 -16.0 0.0 | 53 11 -8.5 -6.4 26 274 10363 75 20 -19.3 -5.2 | 46 17 -11.8 -11.6 27 250 11010 100 21 -20.7 3.6 | 78 13 -13.2 -2.7 28 240 11278 100 21 -20.7 3.6 | 78 13 -13.2 -2.7 29 200 12490 95 26 -25.9 2.3 | 77 19 -18.4 -4.1 30 164 13716 110 35 -32.9 12.0 | 102 26 -25.4 5.6 31 150 14280 105 30 -29.0 7.8 | 94 22 -21.5 1.4 32 134 14935 100 26 -25.6 4.5 | 84 18 -18.1 -1.9 33 121 15545 85 22 -21.9 -1.9 | 60 17 -14.4 -8.3 34 114 15850 60 26 -22.5 -13.0 | 38 25 -15.0 -19.4 35 107 16231 75 27 -26.1 -7.0 | 54 23 -18.6 -13.4 36 100 16610 90 35 -35.0 0.0 | 77 28 -27.5 -6.4 37 97 16764 85 39 -38.9 -3.4 | 73 33 -31.4 -9.8 38 92 17069 100 14 -13.8 2.4 | 58 7 -6.3 -3.9 39 88 17374 240 16 13.9 8.0 | 266 21 21.3 1.6 40 79 17983 205 21 8.9 19.0 | 232 21 16.4 12.7 41 75 18288 235 20 16.4 11.5 | 258 24 23.9 5.1 42 71 18593 230 26 19.9 16.7 | 249 29 27.4 10.3 43 70 18650 265 21 20.9 1.8 | 279 29 28.4 -4.5 44 67 18898 270 26 26.0 -0.0 | 281 34 33.5 -6.4 45 64 19202 280 42 41.4 -7.3 | 286 51 48.8 -13.7 46 55 20117 275 48 47.8 -4.2 | 281 56 55.3 -10.6 47 52 20422 265 39 38.9 3.4 | 274 46 46.3 -3.0 48 50 20650 275 39 38.9 -3.4 | 282 47 46.3 -9.8 49 40 21946 300 27 23.4 -13.5 | 303 37 30.9 -19.9 50 35 22860 275 16 15.9 -1.4 | 288 25 23.4 -7.8 51 33 23165 270 21 21.0 -0.0 | 283 29 28.5 -6.4 52 32 23470 255 19 18.4 4.9 | 273 26 25.8 -1.5 53 30 23774 245 11 10.0 4.6 | 276 18 17.5 -1.7 54 30 23780 60 12 -10.4 -6.0 | 13 13 -2.9 -12.4 55 29 24079 60 12 -10.4 -6.0 | 13 13 -2.9 -12.4 56 27 24384 105 18 -17.4 4.7 | 80 10 -9.9 -1.7 57 26 24689 115 32 -29.0 13.5 | 108 23 -21.5 7.1 58 23 25603 85 45 -44.8 -3.9 | 75 39 -37.3 -10.3 59 20 26213 105 43 -41.5 11.1 | 98 34 -34.1 4.8 60 20 26360 95 56 -55.8 4.9 | 88 48 -48.3 -1.5 61 19 26692 85 60 -59.8 -5.2 | 77 54 -52.3 -11.6 62 18 26822 100 55 -54.2 9.6 | 94 47 -46.7 3.2 63 17 27127 85 60 -59.8 -5.2 | 77 54 -52.3 -11.6 64 14 27737 80 38 -37.4 -6.6 | 67 33 -29.9 -13.0 65 13 28042 75 51 -49.3 -13.2 | 65 46 -41.8 -19.6 Wind Parameters Mean winds (0-6000m): 100.4 at 13.1 knts Storm direction: 130.4 at 9.8 knts Shear (0-3000m) pos: 2.6 neg: 0.4 tot: 3.0 10-3/s Storm rel Dir Shear (0-3000m): 130.2 deg Storm rel helicity (0-3000m) pos: 105.4 neg: -21.6 tot: 83.8 m^2/s^2 ave: 27.9 10^-3 m/s^2 rel: 0.45 Storm rel vorticity (0-3000m) horiz: 10.0 stream: 4.5 10^-3/s Energy-Hel index: 0.46 Bulk Rich Number: 26.71 Bulk Shear: 32.38 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 ------------------------------------------------------------------------------- 500 199 7 269 10| 13.5 0.0 13.5| 0.0 -17.1 -17.1 -34.1 -0.57| 14.7 -8.4 1000 222 7 274 13| 2.9 0.0 2.9| 50.0 -17.1 32.9 32.9 0.17| 14.1 2.4 1500 220 6 279 11| 1.3 0.0 1.3| 69.1 -17.1 52.0 34.7 0.31| 12.5 3.9 2000 168 7 267 6| 2.7 0.0 2.7| 84.5 -17.1 67.4 33.7 0.44| 11.6 5.1 2500 129 8 317 2| 2.2 0.5 2.6| 90.4 -21.6 68.8 27.5 0.39| 10.6 4.1 3000 116 9 24 3| 2.6 0.4 3.0|105.4 -21.6 83.8 27.9 0.45| 10.0 4.5 4000 111 11 55 4| 1.9 0.8 2.6|106.7 -31.7 75.0 18.8 0.35| 8.2 2.9 5000 104 12 53 6| 1.9 1.2 3.1|120.0 -49.8 70.2 14.0 0.28| 7.9 2.2 6000 100 13 54 7| 1.6 1.4 3.0|133.9 -66.0 67.9 11.3 0.23| 7.7 1.7 Wrote GIF file: /home/apache/climate/data/raob//SBTT/skewt/SBTT.skewt.20250429.12.gif