UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025042100.upa.cvt Date: 0000Z 21 APR 25 Searching for VI399... Searching the city database file for: VI399 ... Date:0000Z 21 APR 25 Station: VI399 WMO ident: 42399 Latitude: 26.53 Longitude: 88.72 ------------------------------------------------------------------------------- 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 997 83 24.6 22.8 90 1.8 23.3 50 4 298.0 301.2 296.5 349.7 17.79 1 925 736 23.6 20.3 82 3.3 21.2 115 11 303.4 306.5 297.1 352.2 16.42 2 850 1474 20.2 16.8 81 3.4 17.8 265 12 307.3 310.0 296.7 350.4 14.31 3 700 3117 9.4 5.1 74 4.3 6.9 280 30 312.9 314.4 293.7 337.4 7.90 4 500 5830 -5.7 -34.7 8 29.0 -12.4 295 46 326.1 326.2 291.0 327.6 0.40 5 400 7540 -15.5 -56.5 2 41.0 -20.4 305 53 334.8 334.9 293.0 335.0 0.05 6 300 9660 -29.3 -68.3 1 39.0 -31.7 280 50 344.1 344.1 295.3 344.1 0.01 7 250 10930 -39.3 -76.3 1 37.0 -40.5 270 46 347.6 347.6 296.1 347.7 0.00 8 200 12430 -48.7 -82.7 1 34.0 -49.3 265 42 355.7 355.7 297.8 355.7 0.00 9 150 14260 -62.5 -91.5 1 29.0 -62.6 245 31 362.4 362.4 299.2 362.4 0.00 10 100 16670 -77.1 -102.1 1 25.0 -77.1 255 12 378.8 378.8 302.1 378.8 0.00 TRP WND Sounding variables and indices 1000-500 mb thick: 5746.63 m Freezing level: 575.50 mb = 4805.89 m = 15767.15 ft Wetbulb zero: 628.67 mb = 3983.57 m = 13069.28 ft Precipitable water: 1.93 inches Sfc-500 mean rel hum: 61.25 % Est. max temperature: 34.00 C = 93.20 F Sfc-Lift cond lev (LCL): 971.58 mb = 308.24 m = 1011.29 ft T: 24.26 C 700-500 lapse rate: 5.57 C/km ThetaE index: 24.62 C Layer 850.0- 400.0 mb Conv cond level (CCL): 831.10 mb = 1664.25 m = 5460.06 ft Mean mixing ratio: 16.79 g/kg Conv temperature: 34.55 C = 94.20 F Cap Strength: 2.47 C Lifted Index: -3.20 C Risk: Severe thunderstorms possible Lifted Index @300 mb: -1.60 C Lifted Index @700 mb: -1.52 C Showalter Index: -2.91 C Risk: Severe thunderstorms possible Total Totals Index: 48.40 C Risk: Scattered moderate thunderstorms Vertical Totals Index: 25.90 C Cross Totals Index: 22.50 C K Index: 38.40 Risk: > 80 % chance of thunderstorms Sweat Index: 271.60 Risk: None Energy Index: -4.39 Risk: Severe Thunderstorms probable Parcel Indices Parcel: using 100 mb layer CAPE (B+): 767.28 J/kg Max Up Vert Vel: 39.17 m/s Conv Inhibition (B-): 88.87 J/kg Cap Strength: 2.47 C Lift Cond Lev (LCL): 908.68 mb = 891.35 m = 2924.34 ft Lev Free Conv (LFC): 753.68 mb = 2491.73 m = 8174.85 ft Equ Level (EL): 233.68 mb = 11383.76 m = 37347.84 ft B at Equ Level: 764.24 J/kg Max Parcel Lev (MPL): 133.68 mb = 14944.58 m = 49030.19 ft Wind level data Storm motion: 319 at 21 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 ---------------------------------------------------------- 0 997 83 50 4 -3.1 -2.6 | 128 21 -16.5 12.9 1 972 305 90 12 -12.0 0.0 | 121 30 -25.5 15.5 2 939 610 80 11 -10.8 -1.9 | 119 28 -24.3 13.6 3 925 736 115 11 -10.0 4.6 | 131 31 -23.4 20.1 4 906 914 150 6 -3.0 5.2 | 141 26 -16.5 20.7 5 875 1219 250 6 5.6 2.1 | 156 19 -7.8 17.5 6 850 1474 265 12 12.0 1.0 | 175 17 -1.5 16.5 7 815 1829 255 14 13.5 3.6 | 180 19 0.1 19.1 8 786 2134 265 13 13.0 1.1 | 178 17 -0.5 16.6 9 758 2438 285 14 13.5 -3.6 | 180 12 0.1 11.8 10 732 2743 280 20 19.7 -3.5 | 207 14 6.2 12.0 11 706 3048 280 28 27.6 -4.9 | 233 18 14.1 10.6 12 700 3117 280 30 29.5 -5.2 | 237 19 16.1 10.3 13 655 3658 300 32 27.7 -16.0 | 272 14 14.2 -0.5 14 630 3962 295 34 30.8 -14.4 | 266 17 17.4 1.1 15 607 4267 290 44 41.3 -15.0 | 269 28 27.9 0.4 16 584 4572 290 44 41.3 -15.0 | 269 28 27.9 0.4 17 563 4877 295 47 42.6 -19.9 | 279 29 29.1 -4.4 18 522 5486 290 46 43.2 -15.7 | 271 30 29.8 -0.3 19 500 5830 295 46 41.7 -19.4 | 278 29 28.2 -4.0 20 483 6096 290 43 40.4 -14.7 | 268 27 26.9 0.8 21 400 7540 305 53 43.4 -30.4 | 296 33 30.0 -14.9 22 396 7620 305 48 39.3 -27.5 | 295 29 25.9 -12.1 23 322 9144 285 53 51.2 -13.7 | 267 38 37.7 1.8 24 300 9660 280 50 49.2 -8.7 | 259 36 35.8 6.8 25 260 10668 270 47 47.0 -0.0 | 245 37 33.5 15.5 26 250 10930 270 46 46.0 -0.0 | 245 36 32.5 15.5 27 207 12192 265 43 42.8 3.7 | 237 35 29.4 19.2 28 200 12430 265 42 41.8 3.7 | 236 34 28.4 19.1 29 163 13716 260 37 36.4 6.4 | 226 32 23.0 21.9 30 150 14260 245 31 28.1 13.1 | 207 32 14.6 28.6 31 127 15240 255 36 34.8 9.3 | 221 33 21.3 24.8 32 100 16670 255 12 11.6 3.1 | 174 19 -1.9 18.6 Wind Parameters Mean winds (0-6000m): 289.0 at 27.3 knts Storm direction: 319.0 at 20.5 knts Shear (0-3000m) pos: 3.4 neg: 2.1 tot: 5.4 10-3/s Storm rel Dir Shear (0-3000m): 107.4 deg Storm rel helicity (0-3000m) pos: 214.7 neg: -24.9 tot: 189.8 m^2/s^2 ave: 63.3 10^-3 m/s^2 rel: 0.54 Storm rel vorticity (0-3000m) horiz: 11.1 stream: 6.0 10^-3/s Energy-Hel index: 0.78 Bulk Rich Number: 4.33 Bulk Shear: 177.37 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 84 10 122 27| 8.2 0.0 8.2| 0.0 -23.0 -23.0 -46.0 -0.34| 11.0 -3.7 1000 100 9 127 28| 5.0 0.0 5.0|119.4 -23.0 96.4 96.4 0.42| 15.2 6.4 1500 120 9 133 29| 5.5 0.0 5.5|158.2 -23.0 135.2 90.1 0.50| 14.1 7.0 2000 222 10 164 24| 4.3 0.0 4.3|163.0 -24.9 138.1 69.1 0.47| 11.5 5.4 2500 255 11 171 18| 4.0 0.0 4.0|174.0 -24.9 149.1 59.7 0.47| 10.7 5.0 3000 268 13 178 16| 3.4 2.1 5.4|214.7 -24.9 189.8 63.3 0.54| 11.1 6.0 4000 283 18 200 12| 2.8 2.4 5.3|262.7 -30.5 232.3 58.1 0.54| 10.7 5.7 5000 287 23 226 12| 2.6 2.6 5.2|300.2 -41.2 259.0 51.8 0.50| 9.9 4.9 6000 289 27 242 14| 2.1 2.0 4.1|325.5 -91.3 234.2 39.0 0.42| 9.1 3.8 Wrote GIF file: /home/apache/climate/data/raob//VI399/skewt/VI399.skewt.20250421.00.gif