UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025120812.upa.cvt Date: 1200Z 8 DEC 25 Searching for FAIR... Searching the city database file for: FAIR ... Date:1200Z 8 DEC 25 Station: FAIR WMO ident: 68263 Latitude: -25.92 Longitude: 28.22 Elevation: 1500.00 ------------------------------------------------------------------------------- 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 ------------------------------------------------------------------------------- 0 1000 106 1 925 790 SFC 851 1500 26.6 13.6 45 13.0 17.7 315 4 313.9 316.1 296.6 349.8 11.58 3 850 1532 27.0 14.0 45 13.0 18.1 315 3 314.4 316.7 297.0 351.4 11.91 4 848 1553 24.4 13.4 50 11.0 17.0 314 3 311.9 314.1 296.0 347.2 11.47 5 847 1563 26.2 14.2 48 12.0 17.9 314 3 313.9 316.2 297.0 351.4 12.11 6 846 1574 23.4 12.4 50 11.0 16.1 314 4 311.1 313.1 295.3 344.1 10.76 7 843 1605 22.6 12.6 53 10.0 16.0 313 4 310.6 312.6 295.3 344.0 10.94 8 727 2869 10.6 9.6 94 1.0 10.0 269 11 310.8 312.8 295.0 342.7 10.39 9 706 3113 9.2 9.2 100 0.0 9.2 254 13 311.9 313.9 295.3 343.9 10.41 10 700 3184 8.8 8.8 100 0.0 8.8 250 14 312.2 314.2 295.2 343.7 10.22 11 643 3882 4.0 4.0 100 0.0 4.0 224 12 314.5 316.0 294.1 339.3 7.96 12 591 4566 1.6 1.6 100 0.0 1.6 148 12 319.3 320.8 295.0 342.6 7.29 13 582 4690 -0.7 -0.7 100 0.0 -0.7 147 13 318.1 319.3 293.9 338.0 6.26 14 566 4913 -0.7 -0.7 100 0.0 -0.7 153 15 320.6 321.9 294.6 341.3 6.44 15 561 4984 -3.3 -3.3 100 0.0 -3.3 155 15 318.4 319.4 293.2 335.5 5.35 16 558 5026 -2.5 -2.5 100 0.0 -2.5 156 16 319.8 320.9 293.9 338.2 5.71 17 552 5112 -4.5 -4.5 100 0.0 -4.5 158 16 318.4 319.4 292.9 334.4 4.97 18 511 5720 -5.7 -5.7 100 0.0 -5.7 213 16 324.1 325.0 294.4 340.2 4.90 19 508 5766 -6.5 -6.5 100 0.0 -6.5 217 16 323.6 324.6 294.0 338.9 4.63 20 501 5874 -8.5 -8.5 100 0.0 -8.5 228 16 322.5 323.3 293.3 335.7 4.02 21 500 5890 -9.3 -9.3 100 0.0 -9.3 230 16 321.7 322.4 292.9 334.2 3.78 22 498 5921 -11.3 -11.3 100 0.0 -11.3 229 16 319.6 320.3 291.8 330.3 3.24 23 492 6014 -12.5 -12.5 100 0.0 -12.5 228 15 319.3 319.8 291.5 329.1 2.98 24 467 6410 -14.5 -14.5 100 0.0 -14.5 220 11 321.6 322.1 291.9 330.5 2.66 25 458 6558 -11.9 -11.9 100 0.0 -11.9 221 13 326.6 327.3 293.8 337.9 3.36 26 451 6675 -13.3 -13.3 100 0.0 -13.3 222 14 326.3 326.9 293.4 336.6 3.04 27 442 6828 -15.7 -15.7 100 0.0 -15.7 223 16 325.2 325.7 292.7 333.8 2.55 28 430 7034 -18.5 -18.5 100 0.0 -18.5 226 19 324.2 324.6 292.0 331.2 2.07 29 400 7570 -21.5 -21.5 100 0.0 -21.5 250 24 327.0 327.4 292.5 333.0 1.72 30 374 8063 -25.7 -25.7 100 0.0 -25.7 250 27 327.8 328.1 292.3 332.3 1.26 31 371 8122 -23.9 -23.9 100 0.0 -23.9 250 27 331.0 331.3 293.4 336.3 1.50 32 361 8322 -25.5 -25.5 100 0.0 -25.5 248 29 331.4 331.7 293.4 336.2 1.33 33 356 8423 -24.3 -24.3 100 0.0 -24.3 245 29 334.4 334.7 294.3 339.8 1.50 34 300 9650 -34.3 -34.3 100 0.0 -34.3 220 35 337.0 337.2 294.2 339.7 0.70 35 250 10900 -44.5 -44.5 100 0.0 -44.5 225 34 339.9 340.0 294.6 341.1 0.29 36 200 12360 -55.3 -55.3 100 0.0 -55.3 215 34 345.2 345.2 295.7 345.6 0.11 37 172 13302 -64.5 -64.5 100 0.0 -64.5 236 35 345.2 345.2 295.6 345.4 0.04 38 158 13817 -67.9 -67.9 100 0.0 -67.9 248 36 347.9 347.9 296.2 348.0 0.03 39 150 14130 -67.1 -67.1 100 0.0 -67.1 255 36 354.5 354.5 297.6 354.6 0.03 40 131 14939 -71.9 -71.9 100 0.0 -71.9 240 45 359.9 359.9 298.7 360.0 0.02 41 100 16540 -69.9 -69.9 100 0.0 -69.9 260 17 392.7 392.7 304.2 392.8 0.03 42 70 18640 -71.3 -71.3 100 0.0 -71.3 140 16 431.8 431.9 309.0 432.0 0.04 43 61 19453 -72.1 -72.1 100 0.0 -72.1 134 16 447.4 447.4 310.6 447.6 0.04 44 50 20640 -67.3 -67.3 100 0.0 -67.3 125 17 484.9 484.9 313.9 485.4 0.09 45 39 22164 -60.7 -60.7 100 0.0 -60.7 93 18 537.3 537.4 317.5 539.1 0.28 46 30 23800 -60.3 -60.3 100 0.0 -60.3 60 20 580.3 580.4 319.8 583.0 0.38 47 29 24011 -60.5 -60.5 100 0.0 -60.5 65 19 585.4 585.5 320.0 588.1 0.38 48 20 26360 -53.7 -53.7 100 0.0 -53.7 115 10 671.8 672.3 323.9 682.3 1.28 49 18 27039 -52.5 -52.5 100 0.0 -52.5 696.1 696.8 324.7 710.0 1.65 50 16 27799 -53.3 -53.3 100 0.0 -53.3 717.4 718.1 325.4 732.1 1.68 TRP 131 14939 -71.9 -71.9 100 0.0 -71.9 240 45 359.9 359.9 298.7 360.0 0.02 WND Sounding variables and indices 1000-500 mb thick: 5784.00 m Freezing level: 584.74 mb = 4652.24 m = 15263.07 ft Wetbulb zero: 584.69 mb = 4652.69 m = 15264.56 ft Precipitable water: 1.37 inches Sfc-500 mean rel hum: 91.50 % Est. max temperature: 24.95 C = 76.91 F Sfc-Lift cond lev (LCL): 703.50 mb = 3142.60 m = 10310.25 ft T: 9.03 C 700-500 lapse rate: 6.69 C/km ThetaE index: 8.73 C Layer 846.0- 706.0 mb Conv cond level (CCL): 716.83 mb = 2986.15 m = 9796.95 ft Mean mixing ratio: 10.77 g/kg Conv temperature: 24.17 C = 75.50 F Cap Strength: 0.24 C Lifted Index: -4.05 C Risk: Severe thunderstorms probable Lifted Index @300 mb: -2.44 C Lifted Index @700 mb: -0.01 C Showalter Index: -6.86 C Risk: Severe thunderstorms probable Total Totals Index: 59.60 C Risk: Severe Thunderstorms probable Vertical Totals Index: 36.30 C Cross Totals Index: 23.30 C K Index: 50.30 Risk: > 80 % chance of thunderstorms Sweat Index: 402.00 Risk: Severe Thunderstorms possible Energy Index: -3.42 Risk: Severe Thunderstorms probable Parcel Indices Parcel: using 100 mb layer CAPE (B+): 930.51 J/kg Max Up Vert Vel: 43.14 m/s Conv Inhibition (B-): 7.27 J/kg Cap Strength: 3.46 C Lift Cond Lev (LCL): 722.37 mb = 2921.96 m = 9586.38 ft Lev Free Conv (LFC): 697.37 mb = 3214.98 m = 10547.71 ft Equ Level (EL): 217.37 mb = 11815.17 m = 38763.23 ft B at Equ Level: 929.39 J/kg Max Parcel Lev (MPL): 117.37 mb = 15590.44 m = 51149.13 ft Wind level data Storm motion: 253 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 ---------------------------------------------------------- 0 851 1500 315 4 2.8 -2.8 | 50 9 -6.8 -5.8 1 850 1532 315 3 2.1 -2.1 | 56 9 -7.5 -5.1 2 792 2134 295 12 10.9 -5.1 | 351 8 1.2 -8.0 3 764 2438 295 7 6.3 -3.0 | 29 7 -3.3 -5.9 4 700 3184 250 14 13.2 4.8 | 242 4 3.5 1.8 5 635 3962 220 12 7.7 9.2 | 163 7 -1.9 6.2 6 589 4572 145 12 -6.9 9.8 | 113 18 -16.5 6.9 7 546 5182 160 17 -5.8 16.0 | 130 20 -15.5 13.0 8 500 5890 230 16 12.3 10.3 | 200 8 2.6 7.3 9 467 6401 220 11 7.1 8.4 | 155 6 -2.6 5.5 10 431 7010 225 19 13.4 13.4 | 200 11 3.8 10.5 11 400 7570 250 24 22.6 8.2 | 248 14 12.9 5.3 12 365 8230 250 28 26.3 9.6 | 248 18 16.7 6.6 13 336 8839 235 32 26.2 18.4 | 227 23 16.6 15.4 14 300 9650 220 35 22.5 26.8 | 208 27 12.9 23.9 15 250 10900 225 34 24.0 24.0 | 214 26 14.4 21.1 16 200 12360 215 34 19.5 27.9 | 202 27 9.9 24.9 17 150 14130 255 36 34.8 9.3 | 256 26 25.1 6.4 18 131 14939 240 45 39.0 22.5 | 236 35 29.3 19.5 19 100 16540 260 17 16.7 3.0 | 270 7 7.1 -0.0 20 70 18640 140 16 -10.3 12.3 | 115 22 -19.9 9.3 21 50 20640 125 17 -13.9 9.8 | 106 25 -23.6 6.8 22 30 23800 60 20 -17.3 -10.0 | 64 30 -27.0 -13.0 23 20 26360 115 10 -9.1 4.2 | 94 19 -18.7 1.3 Wind Parameters Mean winds (0-6000m): 223.0 at 13.4 knts Storm direction: 253.0 at 10.1 knts Shear (0-3000m) pos: 0.0 neg: 2.7 tot: 2.7 10-3/s Storm rel Dir Shear (0-3000m): 68.0 deg Storm rel helicity (0-3000m) pos: 6.8 neg: -62.4 tot: -55.5 m^2/s^2 ave: -18.5 10^-3 m/s^2 rel: -0.65 Storm rel vorticity (0-3000m) horiz: 7.5 stream: -4.9 10^-3/s Energy-Hel index: 0.04 Bulk Rich Number: 36.52 Bulk Shear: 25.48 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 ------------------------------------------------------------------------------- 500 303 6 33 8| 0.0 6.4 6.4| 0.0 -13.2 -13.2 -26.5 -0.96| 6.6 -6.3 1000 297 8 20 7| 0.0 2.2 2.2| 6.8 -16.6 -9.8 -9.8 -0.33| 6.4 -2.1 1500 288 9 14 6| 0.0 3.6 3.6| 6.8 -22.7 -15.9 -10.6 -0.51| 6.7 -3.4 2000 273 10 356 3| 0.0 3.3 3.3| 6.8 -28.0 -21.2 -10.6 -0.62| 6.6 -4.1 2500 262 10 333 2| 0.0 2.7 2.7| 6.8 -33.8 -27.0 -10.8 -0.64| 6.3 -4.1 3000 249 11 207 1| 0.0 2.7 2.7| 6.8 -62.4 -55.5 -18.5 -0.65| 7.5 -4.9 4000 219 12 160 7| 1.3 2.0 3.3| 69.3 -68.3 0.9 0.2 -0.28| 7.8 -2.1 5000 219 12 165 7| 1.7 1.8 3.4| 95.8 -77.3 18.5 3.7 -0.16| 8.0 -1.2 6000 223 13 176 7| 2.6 1.5 4.0|135.1 -77.3 57.8 9.6 0.02| 8.1 0.1 Wrote GIF file: /home/apache/climate/data/raob//FAIR/skewt/FAIR.skewt.20251208.12.gif