UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025121912.upa.cvt Date: 1200Z 19 DEC 25 Searching for SBTT... Searching the city database file for: SBTT ... Date:1200Z 19 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 1002 85 23.0 21.0 89 2.0 21.6 100 1 296.0 298.8 294.7 341.5 15.81 1 1000 97 23.0 21.4 91 1.6 21.9 120 4 296.1 299.1 295.0 343.0 16.25 2 985 229 22.4 22.0 98 0.4 22.1 142 5 296.8 299.9 295.8 346.4 17.14 3 954 510 23.8 19.7 78 4.1 20.9 78 2 301.0 303.8 295.7 346.0 15.32 4 925 780 22.2 19.3 84 2.9 20.2 45 3 302.0 304.8 296.1 347.5 15.41 5 850 1512 17.8 15.9 89 1.9 16.5 330 9 304.8 307.3 295.5 345.1 13.49 6 844 1573 17.4 15.6 89 1.8 16.2 334 9 305.0 307.5 295.4 344.8 13.33 7 800 2030 16.0 11.0 72 5.0 12.8 3 11 308.2 310.1 294.2 339.6 10.36 8 723 2883 10.0 9.0 93 1.0 9.4 75 6 310.7 312.6 294.7 341.4 10.02 9 708 3058 9.2 8.8 97 0.4 8.9 110 4 311.7 313.6 295.0 342.7 10.10 10 700 3152 8.6 7.6 93 1.0 8.0 130 3 312.0 313.8 294.6 341.0 9.40 11 642 3866 6.2 3.1 81 3.1 4.4 230 11 317.1 318.5 294.5 340.7 7.47 12 613 4246 5.2 0.8 73 4.4 2.7 248 13 320.2 321.5 294.7 341.5 6.63 13 535 5345 -2.5 -3.9 90 1.4 -3.2 291 20 323.7 324.7 294.6 341.2 5.37 14 504 5817 -5.3 -6.0 95 0.7 -5.7 301 18 325.8 326.8 294.8 341.9 4.85 15 500 5880 -5.3 -6.5 91 1.2 -5.9 305 16 326.6 327.5 294.8 342.2 4.71 16 447 6753 -9.3 -14.2 67 4.9 -11.2 344 14 332.2 332.8 294.8 342.0 2.85 17 411 7395 -14.7 -15.1 97 0.4 -14.9 47 7 333.3 333.9 295.1 343.3 2.88 18 400 7600 -15.3 -16.6 90 1.3 -15.8 95 9 335.1 335.6 295.3 344.3 2.61 19 363 8326 -19.7 -21.8 83 2.1 -20.3 110 10 338.7 339.0 295.6 345.3 1.84 20 352 8553 -20.9 -26.9 59 6.0 -22.4 95 10 340.0 340.3 295.4 344.5 1.20 21 339 8830 -23.5 -28.3 65 4.8 -24.6 106 11 340.2 340.4 295.3 344.2 1.10 22 311 9453 -28.3 -33.3 62 5.0 -29.2 120 14 342.0 342.1 295.4 344.8 0.74 23 300 9710 -30.3 -34.0 70 3.7 -30.9 120 14 342.7 342.8 295.6 345.4 0.72 24 266 10554 -36.7 -40.0 71 3.3 -37.1 120 13 345.3 345.4 296.0 347.1 0.44 25 250 10980 -40.5 -43.3 74 2.8 -40.8 110 12 345.9 345.9 296.0 347.2 0.33 26 224 11719 -47.3 -48.5 87 1.2 -47.4 121 13 346.5 346.5 296.0 347.3 0.21 27 215 11989 -49.3 -53.5 61 4.2 -49.5 111 14 347.4 347.5 296.2 348.0 0.12 28 205 12300 -51.9 -54.0 78 2.1 -52.0 101 15 348.1 348.1 296.3 348.6 0.12 29 200 12460 -53.5 -59.5 48 6.0 -53.7 95 16 348.0 348.1 296.3 348.3 0.06 30 195 12622 -54.7 -62.7 37 8.0 -54.9 94 18 348.7 348.7 296.4 348.8 0.04 31 185 12956 -58.1 -63.1 53 5.0 -58.2 93 17 348.4 348.4 296.3 348.6 0.04 32 164 13702 -64.9 -70.9 43 6.0 -65.0 92 22 349.3 349.3 296.5 349.3 0.02 33 150 14240 -69.3 -74.3 48 5.0 -69.4 95 36 350.7 350.7 296.8 350.8 0.01 34 128 15171 -76.9 -83.9 32 7.0 -76.9 85 44 353.3 353.3 297.3 353.3 0.00 35 117 15691 -74.7 -87.7 12 13.0 -74.7 76 38 366.6 366.6 299.9 366.6 0.00 36 116 15741 -74.5 -87.5 12 13.0 -74.5 74 34 367.8 367.8 300.2 367.8 0.00 37 100 16590 -81.5 -89.5 24 8.0 -81.5 80 16 370.3 370.3 300.6 370.3 0.00 38 87 17359 -86.3 -92.3 33 6.0 -86.3 70 17 375.7 375.7 301.5 375.7 0.00 39 81 17749 -85.7 -92.7 27 7.0 -85.7 71 25 384.6 384.6 303.0 384.6 0.00 40 77 18033 -77.1 -89.1 13 12.0 -77.1 77 32 408.2 408.2 306.3 408.2 0.00 41 74 18261 -76.3 -89.3 11 13.0 -76.3 84 16 414.5 414.5 307.0 414.5 0.00 42 71 18498 -77.1 -89.1 13 12.0 -77.1 60 11 417.7 417.7 307.4 417.7 0.00 43 70 18580 -75.3 -89.3 9 14.0 -75.3 50 10 423.3 423.3 308.1 423.3 0.00 44 68 18749 -73.5 -88.5 8 15.0 -73.6 76 6 430.7 430.7 308.9 430.7 0.00 45 64 19104 -74.9 -88.9 10 14.0 -75.0 354 11 435.2 435.2 309.4 435.2 0.00 46 59 19585 -68.7 -88.7 4 20.0 -68.9 264 11 459.3 459.3 311.7 459.3 0.00 47 53 20225 -71.9 -89.9 5 18.0 -72.0 152 12 466.2 466.2 312.3 466.2 0.00 48 50 20570 -70.9 -89.9 4 19.0 -71.1 90 24 476.4 476.4 313.2 476.4 0.00 49 40 21896 -70.3 -91.3 3 21.0 -70.5 94 41 509.3 509.3 315.6 509.3 0.00 50 37 22364 -66.1 -91.1 2 25.0 -66.5 91 53 531.6 531.6 317.0 531.6 0.00 51 30 23650 -61.9 -90.9 1 29.0 -62.6 90 69 575.9 575.9 319.5 575.9 0.00 52 26 24539 -58.5 -89.5 1 31.0 -59.7 93 82 609.6 609.6 321.0 609.6 0.00 53 24 25042 -57.2 -89.4 1 32.2 -58.7 95 90 627.6 627.6 321.8 627.7 0.01 54 20 26200 -54.1 -89.1 1 35.0 -56.5 80 83 670.6 670.6 323.4 670.6 0.01 55 19 26529 -53.7 -88.7 1 35.0 -56.3 83 86 681.7 681.7 323.9 681.8 0.01 56 17 27259 -44.7 -84.7 0 40.0 -50.5 81 73 732.6 732.6 325.4 732.8 0.02 57 15 28091 -47.5 -86.5 0 39.0 -52.7 81 47 750.0 750.0 326.0 750.1 0.01 58 14 28549 -46.1 -85.1 0 39.0 -52.1 91 35 769.7 769.7 326.5 769.9 0.02 59 13 29049 -39.1 -81.1 0 42.0 -48.6 95 32 810.4 810.5 327.5 810.8 0.04 60 11 30194 -39.5 -81.5 0 42.0 -49.6 90 21 848.6 848.7 328.4 849.1 0.05 TRP 87 17359 -86.3 -92.3 33 6.0 -86.3 70 17 375.7 375.7 301.5 375.7 0.00 WND 24 25042 -57.2 -89.4 1 32.2 -58.7 95 90 627.6 627.6 321.8 627.7 0.01 Sounding variables and indices 1000-500 mb thick: 5783.00 m Freezing level: 560.32 mb = 4987.78 m = 16363.91 ft Wetbulb zero: 577.21 mb = 4731.31 m = 15522.49 ft Precipitable water: 2.29 inches Sfc-500 mean rel hum: 84.94 % Est. max temperature: 31.74 C = 89.13 F Sfc-Lift cond lev (LCL): 973.45 mb = 332.68 m = 1091.47 ft T: 22.92 C 700-500 lapse rate: 5.10 C/km ThetaE index: 7.84 C Layer 850.0- 723.0 mb Conv cond level (CCL): 862.60 mb = 1384.64 m = 4542.73 ft Mean mixing ratio: 15.77 g/kg Conv temperature: 31.33 C = 88.40 F Cap Strength: 2.16 C Lifted Index: -1.01 C Risk: Thunderstorms probable Lifted Index @300 mb: 0.09 C Lifted Index @700 mb: -0.97 C Showalter Index: -0.52 C Risk: Thunderstorms probable Total Totals Index: 44.30 C Risk: Scattered moderate thunderstorms Vertical Totals Index: 23.10 C Cross Totals Index: 21.20 C K Index: 38.00 Risk: > 80 % chance of thunderstorms Sweat Index: 224.80 Risk: None Energy Index: -0.62 Risk: Scattered severe thunderstorms Parcel Indices Parcel: using 100 mb layer CAPE (B+): 132.39 J/kg Max Up Vert Vel: 16.27 m/s Conv Inhibition (B-): 82.81 J/kg Cap Strength: 2.16 C Lift Cond Lev (LCL): 916.47 mb = 860.20 m = 2822.15 ft Lev Free Conv (LFC): 741.47 mb = 2670.42 m = 8761.12 ft Equ Level (EL): 641.47 mb = 3873.05 m = 12706.71 ft B at Equ Level: 51.93 J/kg Max Parcel Lev (MPL): 191.47 mb = 12738.05 m = 41790.99 ft Wind level data Storm motion: 328 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 1002 85 100 1 -1.0 0.2 | 143 8 -5.0 6.6 1 1000 97 120 4 -3.5 2.0 | 138 11 -7.5 8.4 2 977 305 155 5 -2.1 4.5 | 151 13 -6.2 11.0 3 943 610 40 1 -0.6 -0.8 | 140 7 -4.7 5.7 4 925 780 45 3 -2.1 -2.1 | 125 8 -6.2 4.3 5 911 914 5 3 -0.3 -3.0 | 129 6 -4.3 3.4 6 850 1512 330 9 4.5 -7.8 | 342 1 0.4 -1.4 7 790 2134 10 11 -1.9 -10.8 | 54 7 -6.0 -4.4 8 762 2438 345 12 3.1 -11.6 | 11 5 -1.0 -5.2 9 700 3152 130 3 -2.3 1.9 | 143 11 -6.4 8.4 10 658 3658 220 10 6.4 7.7 | 190 14 2.4 14.1 11 610 4267 250 13 12.2 4.4 | 217 14 8.2 10.9 12 588 4572 270 10 10.0 -0.0 | 223 9 5.9 6.4 13 525 5486 295 22 19.9 -9.3 | 280 16 15.9 -2.9 14 506 5791 300 19 16.5 -9.5 | 284 13 12.4 -3.1 15 500 5880 305 16 13.1 -9.2 | 287 9 9.0 -2.7 16 486 6096 335 10 4.2 -9.1 | 356 3 0.2 -2.6 17 449 6706 340 15 5.1 -14.1 | 352 8 1.1 -7.7 18 432 7010 10 10 -1.7 -9.8 | 59 7 -5.8 -3.4 19 415 7315 30 6 -3.0 -5.2 | 100 7 -7.1 1.2 20 400 7600 95 9 -9.0 0.8 | 119 15 -13.0 7.2 21 399 7620 85 11 -11.0 -1.0 | 110 16 -15.0 5.5 22 367 8230 115 10 -9.1 4.2 | 129 17 -13.1 10.7 23 352 8534 95 10 -10.0 0.9 | 117 16 -14.0 7.3 24 324 9144 120 13 -11.3 6.5 | 130 20 -15.3 12.9 25 300 9710 120 14 -12.1 7.0 | 130 21 -16.2 13.4 26 273 10363 125 14 -11.5 8.0 | 133 21 -15.5 14.5 27 250 10973 110 12 -11.3 4.1 | 124 19 -15.3 10.5 28 250 10980 110 12 -11.3 4.1 | 124 19 -15.3 10.5 29 228 11582 125 12 -9.8 6.9 | 134 19 -13.9 13.3 30 200 12460 95 16 -15.9 1.4 | 111 21 -20.0 7.8 31 199 12497 95 18 -17.9 1.6 | 110 23 -22.0 8.0 32 172 13411 90 15 -15.0 0.0 | 109 20 -19.1 6.4 33 150 14240 95 36 -35.9 3.1 | 103 41 -39.9 9.6 34 148 14326 95 35 -34.9 3.1 | 104 40 -38.9 9.5 35 120 15545 80 48 -47.3 -8.3 | 88 51 -51.3 -1.9 36 114 15850 70 25 -23.5 -8.6 | 86 28 -27.6 -2.1 37 108 16154 105 13 -12.6 3.4 | 121 19 -16.6 9.8 38 100 16590 80 16 -15.8 -2.8 | 100 20 -19.8 3.7 39 97 16764 80 16 -15.8 -2.8 | 100 20 -19.8 3.7 40 87 17359 70 17 -16.0 -5.8 | 92 20 -20.0 0.6 41 87 17374 55 12 -9.8 -6.9 | 88 14 -13.9 -0.5 42 82 17678 70 21 -19.7 -7.2 | 88 24 -23.8 -0.8 43 78 17983 75 36 -34.8 -9.3 | 86 39 -38.8 -2.9 44 74 18288 85 15 -14.9 -1.3 | 105 20 -19.0 5.1 45 70 18580 50 10 -7.7 -6.4 | 90 12 -11.7 0.0 46 70 18593 105 1 -1.0 0.3 | 143 8 -5.0 6.7 47 66 18898 50 10 -7.7 -6.4 | 90 12 -11.7 0.0 48 63 19202 330 11 5.5 -9.5 | 335 3 1.4 -3.1 49 54 20117 175 10 -0.9 10.0 | 163 17 -4.9 16.4 50 51 20422 110 15 -14.1 5.1 | 122 22 -18.2 11.6 51 50 20570 90 24 -24.0 0.0 | 103 29 -28.1 6.4 52 44 21336 75 39 -37.7 -10.1 | 85 42 -41.7 -3.7 53 40 21946 95 41 -40.8 3.6 | 103 46 -44.9 10.0 54 36 22555 90 57 -57.0 0.0 | 96 61 -61.1 6.4 55 34 22860 95 53 -52.8 4.6 | 101 58 -56.9 11.0 56 30 23650 90 69 -69.0 0.0 | 95 73 -73.1 6.4 57 24 25042 95 90 -89.7 7.8 | 99 95 -93.7 14.3 58 23 25298 95 90 -89.7 7.8 | 99 95 -93.7 14.3 59 20 26200 80 83 -81.7 -14.4 | 85 86 -85.8 -8.0 60 18 26518 85 88 -87.7 -7.7 | 89 92 -91.7 -1.2 61 15 27127 75 54 -52.2 -14.0 | 82 57 -56.2 -7.5 62 14 27432 90 36 -36.0 0.0 | 99 41 -40.1 6.4 63 13 27737 95 32 -31.9 2.8 | 104 37 -35.9 9.2 64 11 28346 90 20 -20.0 0.0 | 105 25 -24.1 6.4 65 10 28651 90 36 -36.0 0.0 | 99 41 -40.1 6.4 66 9 28956 105 32 -30.9 8.3 | 113 38 -35.0 14.7 67 8 29566 80 15 -14.8 -2.6 | 101 19 -18.8 3.8 68 7 29870 110 22 -20.7 7.5 | 119 28 -24.7 14.0 69 7 30175 110 11 -10.3 3.8 | 125 18 -14.4 10.2 Wind Parameters Mean winds (0-6000m): 297.7 at 10.1 knts Storm direction: 327.7 at 7.6 knts Shear (0-3000m) pos: 2.1 neg: 1.7 tot: 3.8 10-3/s Storm rel Dir Shear (0-3000m): -5.3 deg Storm rel helicity (0-3000m) pos: 52.1 neg: -21.1 tot: 31.0 m^2/s^2 ave: 10.3 10^-3 m/s^2 rel: 0.21 Storm rel vorticity (0-3000m) horiz: 8.8 stream: 1.8 10^-3/s Energy-Hel index: 0.01 Bulk Rich Number: 5.37 Bulk Shear: 24.63 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 ------------------------------------------------------------------------------- 500 139 4 145 11| 0.0 1.1 1.1| 5.9 -9.3 -3.4 -6.8 -0.09| 11.9 -1.1 1000 91 3 132 10| 0.0 2.6 2.6| 6.3 -13.7 -7.5 -7.5 -0.20| 8.7 -1.8 1500 357 5 116 4| 0.0 3.4 3.4| 6.3 -15.5 -9.2 -6.1 -0.31| 7.8 -2.4 2000 354 6 98 4| 1.5 2.5 4.0| 9.8 -15.5 -5.7 -2.9 -0.13| 7.3 -1.0 2500 356 7 80 4| 1.4 2.0 3.4| 17.4 -21.1 -3.7 -1.5 -0.07| 7.7 -0.5 3000 357 7 81 4| 2.1 1.7 3.8| 52.1 -21.1 31.0 10.3 0.21| 8.8 1.8 4000 328 7 131 0| 2.0 1.3 3.3|112.0 -21.1 90.9 22.7 0.39| 8.9 3.5 5000 296 8 232 4| 1.3 1.0 2.4|141.5 -21.1 120.3 24.1 0.44| 8.6 3.8 6000 298 10 251 5| 0.1 0.8 0.9|174.6 -21.1 153.5 25.6 0.47| 9.1 4.3 Wrote GIF file: /home/apache/climate/data/raob//SBTT/skewt/SBTT.skewt.20251219.12.gif