UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025101812.upa.cvt Date: 1200Z 18 OCT 25 Searching for FAIR... Searching the city database file for: FAIR ... Date:1200Z 18 OCT 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 197 1 925 855 SFC 855 1500 14.8 14.8 100 0.0 14.8 270 14 301.1 303.4 293.8 337.8 12.48 3 850 1568 13.6 12.5 93 1.1 12.9 305 17 300.4 302.4 292.3 332.1 10.78 4 843 1638 12.8 12.2 96 0.6 12.4 304 18 300.3 302.2 292.2 331.5 10.65 5 780 2288 9.4 9.4 100 0.0 9.4 290 27 303.4 305.1 292.2 331.8 9.54 6 778 2309 9.4 9.4 100 0.0 9.4 289 27 303.6 305.3 292.3 332.1 9.56 7 759 2515 11.8 4.8 62 7.0 7.8 282 29 308.3 309.7 291.7 330.1 7.12 8 756 2548 12.0 5.0 62 7.0 7.9 281 29 308.9 310.3 292.0 331.1 7.25 9 726 2888 11.0 3.0 58 8.0 6.5 270 26 311.4 312.6 292.2 331.8 6.55 10 700 3191 8.4 1.4 61 7.0 4.5 260 24 311.8 312.9 291.9 330.7 6.06 11 630 4052 1.4 -0.7 86 2.1 0.3 258 20 313.3 314.4 292.1 331.5 5.78 12 541 5265 -6.1 -6.3 98 0.2 -6.2 248 26 318.3 319.2 292.4 332.6 4.42 13 500 5880 -8.7 -9.3 95 0.6 -8.9 275 25 322.4 323.2 293.0 334.9 3.78 14 429 7054 -15.1 -16.0 93 0.9 -15.4 290 38 328.7 329.2 293.7 337.5 2.56 15 400 7580 -18.7 -19.9 90 1.2 -19.1 295 43 330.7 331.1 293.7 337.6 1.97 16 333 8921 -28.5 -29.8 89 1.3 -28.7 295 37 335.1 335.3 294.0 338.6 0.97 17 300 9660 -34.5 -36.3 84 1.8 -34.7 295 41 336.7 336.9 294.0 338.9 0.57 18 265 10510 -41.9 -44.2 78 2.3 -42.1 295 46 338.1 338.1 294.1 339.2 0.28 19 250 10900 -45.5 -46.1 94 0.6 -45.5 295 48 338.4 338.5 294.1 339.4 0.24 20 249 10927 -45.7 -45.8 99 0.1 -45.7 295 48 338.5 338.6 294.2 339.5 0.25 21 225 11590 -52.3 -55.9 65 3.6 -52.4 286 55 338.4 338.4 294.0 338.7 0.09 22 200 12340 -58.5 -61.2 71 2.7 -58.6 275 62 340.1 340.1 294.4 340.3 0.05 23 199 12371 -58.9 -61.3 74 2.4 -58.9 274 64 340.0 340.0 294.4 340.2 0.05 24 197 12435 -59.1 -61.2 76 2.1 -59.2 271 67 340.6 340.7 294.5 340.9 0.05 25 192 12595 -59.5 -62.6 67 3.1 -59.6 263 75 342.5 342.5 295.0 342.7 0.04 26 190 12661 -58.5 -63.0 56 4.5 -58.6 260 78 345.1 345.1 295.6 345.3 0.04 27 188 12728 -57.5 -63.5 46 6.0 -57.6 261 77 347.8 347.8 296.2 348.0 0.04 28 184 12863 -57.9 -66.9 31 9.0 -58.0 263 76 349.3 349.3 296.5 349.4 0.03 29 182 12932 -57.3 -67.3 27 10.0 -57.5 264 76 351.4 351.4 297.0 351.5 0.02 30 167 13473 -58.9 -72.9 15 14.0 -59.1 271 71 357.5 357.5 298.2 357.5 0.01 31 166 13511 -58.9 -72.9 15 14.0 -59.1 271 71 358.1 358.1 298.3 358.1 0.01 32 150 14140 -62.9 -75.9 16 13.0 -63.0 280 66 361.7 361.7 299.0 361.8 0.01 33 135 14784 -67.5 -79.5 17 12.0 -67.6 284 56 364.6 364.6 299.6 364.7 0.01 34 122 15396 -67.9 -79.9 16 12.0 -67.9 288 46 374.6 374.6 301.4 374.6 0.01 35 119 15546 -66.9 -79.9 14 13.0 -67.0 289 44 379.1 379.1 302.1 379.2 0.01 36 104 16349 -73.7 -84.7 17 11.0 -73.7 295 31 381.0 381.0 302.4 381.0 0.00 37 101 16521 -72.3 -83.3 18 11.0 -72.3 295 30 386.9 386.9 303.3 387.0 0.00 38 100 16580 -72.7 -83.7 17 11.0 -72.8 295 30 387.3 387.3 303.4 387.3 0.00 39 72 18494 -73.5 -83.5 20 10.0 -73.6 254 11 423.7 423.7 308.2 423.7 0.01 40 70 18660 -68.9 -80.9 16 12.0 -69.0 250 9 437.0 437.0 309.6 437.0 0.01 41 69 18746 -68.3 -81.3 14 13.0 -68.4 256 9 440.1 440.1 309.9 440.1 0.01 42 66 19015 -65.7 -79.7 13 14.0 -65.9 275 10 451.4 451.4 311.0 451.4 0.01 43 61 19492 -68.1 -82.1 12 14.0 -68.2 309 11 456.3 456.3 311.4 456.3 0.01 44 50 20700 -64.1 -82.1 7 18.0 -64.4 35 15 492.4 492.4 314.4 492.5 0.01 45 35 22925 -56.7 -81.7 3 25.0 -57.8 45 16 564.6 564.6 318.9 564.7 0.01 46 30 23900 -57.9 -83.9 2 26.0 -59.0 50 16 586.8 586.8 320.0 586.9 0.01 47 29 24114 -58.1 -84.1 2 26.0 -59.3 592.0 592.0 320.2 592.0 0.01 TRP 104 16349 -73.7 -84.7 17 11.0 -73.7 295 31 381.0 381.0 302.4 381.0 0.00 WND 190 12661 -58.5 -63.0 56 4.5 -58.6 260 78 345.1 345.1 295.6 345.3 0.04 Sounding variables and indices 1000-500 mb thick: 5683.00 m Freezing level: 613.39 mb = 4278.66 m = 14037.43 ft Wetbulb zero: 625.72 mb = 4106.63 m = 13473.03 ft Precipitable water: 1.12 inches Sfc-500 mean rel hum: 84.83 % Est. max temperature: 24.91 C = 76.83 F Sfc-Lift cond lev (LCL): 855.14 mb = 1498.68 m = 4916.88 ft T: -9999.00 C 700-500 lapse rate: 6.36 C/km ThetaE index: 6.30 C Layer 850.0- 780.0 mb Conv cond level (CCL): 787.88 mb = 2203.46 m = 7229.12 ft Mean mixing ratio: 9.73 g/kg Conv temperature: 16.53 C = 61.76 F Cap Strength: 4.53 C Lifted Index: 1.71 C Risk: Showers probable Lifted Index @300 mb: 4.68 C Lifted Index @700 mb: 3.46 C Showalter Index: 1.56 C Risk: Showers probable Total Totals Index: 43.50 C Risk: None Vertical Totals Index: 22.30 C Cross Totals Index: 21.20 C K Index: 27.80 Risk: 40-60 % chance of thunderstorms Sweat Index: 209.00 Risk: None Energy Index: 0.51 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 32.58 J/kg Max Up Vert Vel: 8.07 m/s Conv Inhibition (B-): 26407.62 J/kg Cap Strength: 4.48 C Lift Cond Lev (LCL): 789.53 mb = 2185.90 m = 7171.50 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 302 at 20 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 ---------------------------------------------------------- 0 855 1500 270 14 14.0 -0.0 | 163 11 -3.3 10.8 1 850 1568 305 17 13.9 -9.8 | 108 4 -3.4 1.1 2 794 2134 295 24 21.8 -10.1 | 261 5 4.5 0.7 3 766 2438 285 30 29.0 -7.8 | 255 12 11.7 3.1 4 700 3191 260 24 23.6 4.2 | 203 16 6.3 15.0 5 636 3962 260 19 18.7 3.3 | 186 14 1.4 14.1 6 589 4572 245 30 27.2 12.7 | 203 26 9.9 23.5 7 546 5182 245 26 23.6 11.0 | 196 23 6.3 21.8 8 500 5880 275 25 24.9 -2.2 | 221 12 7.6 8.6 9 467 6401 275 30 29.9 -2.6 | 237 15 12.6 8.2 10 431 7010 290 38 35.7 -13.0 | 277 19 18.4 -2.2 11 400 7580 295 43 39.0 -18.2 | 289 23 21.7 -7.3 12 366 8230 290 36 33.8 -12.3 | 275 17 16.5 -1.5 13 336 8839 295 37 33.5 -15.6 | 286 17 16.2 -4.8 14 300 9660 295 41 37.2 -17.3 | 288 21 19.9 -6.5 15 250 10900 295 48 43.5 -20.3 | 290 28 26.2 -9.5 16 200 12340 275 62 61.8 -5.4 | 263 45 44.5 5.4 17 190 12661 260 78 76.8 13.5 | 248 64 59.5 24.4 18 150 14140 280 66 65.0 -11.5 | 271 48 47.7 -0.6 19 104 16349 295 31 28.1 -13.1 | 282 11 10.8 -2.3 20 100 16580 295 30 27.2 -12.7 | 281 10 9.9 -1.9 21 70 18660 250 9 8.5 3.1 | 148 16 -8.8 13.9 22 50 20700 35 15 -8.6 -12.3 | 87 26 -25.9 -1.5 23 30 23900 50 16 -12.3 -10.3 | 91 30 -29.5 0.5 Wind Parameters Mean winds (0-6000m): 272.1 at 27.2 knts Storm direction: 302.1 at 20.4 knts Shear (0-3000m) pos: 2.0 neg: 3.9 tot: 5.9 10-3/s Storm rel Dir Shear (0-3000m): 39.2 deg Storm rel helicity (0-3000m) pos: 23.0 neg: -71.1 tot: -48.2 m^2/s^2 ave: -16.1 10^-3 m/s^2 rel: -0.30 Storm rel vorticity (0-3000m) horiz: 9.3 stream: -2.8 10^-3/s Energy-Hel index: 0.00 Bulk Rich Number: 1.34 Bulk Shear: 24.26 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 ------------------------------------------------------------------------------- 500 300 19 155 1| 12.2 0.0 12.2| 0.8 -7.6 -6.7 -13.5 -0.23| 17.0 -3.8 1000 294 23 247 4| 6.1 5.0 11.0| 1.0 -13.1 -12.1 -12.1 -0.21| 13.8 -2.8 1500 287 24 239 7| 4.1 4.5 8.6| 1.0 -42.9 -42.0 -28.0 -0.39| 12.2 -4.8 2000 281 24 226 9| 3.0 3.7 6.7| 1.0 -61.8 -60.8 -30.4 -0.46| 10.5 -4.8 2500 277 23 217 10| 2.4 2.9 5.3| 1.6 -71.1 -69.5 -27.8 -0.47| 9.0 -4.3 3000 272 24 212 12| 2.0 3.9 5.9| 23.0 -71.1 -48.2 -16.1 -0.30| 9.3 -2.8 4000 265 25 209 15| 2.3 2.9 5.2| 41.2 -87.1 -45.8 -11.5 -0.24| 8.4 -2.0 5000 267 25 212 15| 2.9 2.3 5.2| 75.7 -87.1 -11.4 -2.3 -0.08| 8.2 -0.6 6000 272 27 225 14| 3.8 1.9 5.7|138.0 -87.1 50.9 8.5 0.07| 8.1 0.6 Wrote GIF file: /home/apache/climate/data/raob//FAIR/skewt/FAIR.skewt.20251018.12.gif