UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025121800.upa.cvt Date: 0000Z 18 DEC 25 Searching for VVTS... Searching the city database file for: VVTS ... Date:0000Z 18 DEC 25 Station: VVTS WMO ident: 48900 Latitude: 10.82 Longitude: 106.67 Elevation: 19.00 ------------------------------------------------------------------------------- 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 1012 19 25.0 22.4 86 2.6 23.2 65 1 297.1 300.2 295.9 346.6 17.09 1 1000 103 24.4 21.8 85 2.6 22.6 65 1 297.5 300.6 295.7 345.9 16.66 2 925 783 19.8 19.2 96 0.6 19.4 20 1 299.6 302.3 295.3 344.3 15.31 3 923 802 19.8 19.2 96 0.6 19.4 22 1 299.7 302.5 295.4 344.6 15.35 4 903 992 21.2 17.2 78 4.0 18.4 37 4 303.1 305.6 295.3 344.0 13.80 5 858 1434 19.4 10.4 56 9.0 13.7 73 10 305.6 307.4 292.7 333.5 9.27 6 850 1515 18.8 9.8 56 9.0 13.1 80 11 305.8 307.5 292.5 332.9 8.98 7 761 2454 12.0 8.4 79 3.6 9.8 74 14 308.3 310.0 293.3 336.1 9.13 8 732 2779 12.0 -1.0 41 13.0 5.1 72 16 311.8 312.7 290.9 327.0 4.86 9 715 2976 11.2 -0.8 43 12.0 4.8 71 16 313.0 313.9 291.4 328.9 5.05 10 712 3011 11.2 -2.8 37 14.0 4.0 71 16 313.4 314.2 290.9 327.2 4.37 11 700 3153 10.2 -2.8 40 13.0 3.5 70 17 313.8 314.6 291.1 327.9 4.45 12 618 4182 5.2 -3.8 52 9.0 0.6 118 14 319.4 320.3 292.9 334.6 4.67 13 579 4712 0.8 -5.2 64 6.0 -2.1 143 12 320.3 321.2 293.0 334.9 4.49 14 572 4810 0.6 -10.4 43 11.0 -4.2 148 12 321.2 321.8 292.0 331.2 3.03 15 545 5197 -2.1 -6.5 72 4.4 -4.2 167 11 322.4 323.3 293.4 336.6 4.32 16 524 5509 -3.5 -4.9 90 1.4 -4.2 182 10 324.4 325.4 294.6 341.1 5.08 17 500 5880 -4.9 -7.6 81 2.7 -6.2 200 9 327.1 327.9 294.7 341.5 4.32 18 443 6820 -11.1 -13.9 80 2.8 -12.2 211 13 330.8 331.4 294.6 340.9 2.95 19 426 7120 -11.3 -25.3 30 14.0 -15.3 214 15 334.2 334.5 293.9 338.4 1.15 20 423 7174 -11.3 -24.3 33 13.0 -15.2 215 15 334.9 335.2 294.2 339.5 1.27 21 412 7375 -12.7 -20.7 51 8.0 -15.3 217 16 335.6 336.0 294.8 342.0 1.79 22 400 7600 -14.3 -24.3 42 10.0 -17.2 220 17 336.4 336.7 294.6 341.3 1.34 23 333 8966 -23.3 -41.3 18 18.0 -26.1 207 20 342.2 342.2 295.1 343.4 0.31 24 317 9324 -26.5 -36.5 38 10.0 -28.2 204 20 342.6 342.7 295.4 344.7 0.53 25 301 9696 -28.9 -43.9 22 15.0 -30.7 200 21 344.3 344.4 295.6 345.4 0.26 26 300 9720 -29.1 -44.1 22 15.0 -30.9 200 21 344.4 344.4 295.6 345.4 0.25 27 288 10010 -31.5 -47.5 19 16.0 -33.1 202 20 345.0 345.0 295.7 345.7 0.18 28 256 10828 -39.3 -46.3 47 7.0 -39.9 209 18 345.3 345.3 295.8 346.2 0.23 29 253 10909 -40.1 -43.4 71 3.3 -40.4 209 17 345.3 345.3 295.8 346.6 0.32 30 250 10990 -40.5 -45.0 62 4.5 -40.9 210 17 345.9 345.9 296.0 347.0 0.28 31 227 11640 -45.7 -51.7 51 6.0 -46.0 206 20 347.6 347.6 296.3 348.2 0.14 32 211 12123 -50.1 -53.0 71 2.9 -50.3 202 23 348.1 348.1 296.3 348.6 0.13 33 205 12310 -51.9 -57.9 48 6.0 -52.1 201 24 348.1 348.1 296.3 348.4 0.07 34 200 12470 -53.1 -56.6 66 3.5 -53.2 200 25 348.7 348.7 296.4 349.1 0.09 35 190 12798 -56.1 -59.0 70 2.9 -56.2 194 28 349.0 349.0 296.5 349.3 0.07 36 166 13644 -62.9 -70.9 33 8.0 -63.0 177 37 351.4 351.4 297.0 351.5 0.02 37 160 13869 -64.9 -69.8 51 4.9 -65.0 173 40 351.7 351.7 297.0 351.8 0.02 38 150 14260 -68.3 -74.3 42 6.0 -68.4 165 44 352.4 352.4 297.2 352.5 0.01 39 145 14462 -69.5 -77.5 30 8.0 -69.5 172 43 353.8 353.8 297.4 353.8 0.01 40 134 14929 -70.3 -82.3 16 12.0 -70.4 187 40 360.4 360.4 298.8 360.4 0.00 41 100 16610 -82.3 -89.3 29 7.0 -82.3 245 31 368.7 368.7 300.4 368.7 0.00 TRP WND Sounding variables and indices 1000-500 mb thick: 5777.00 m Freezing level: 566.00 mb = 4895.83 m = 16062.22 ft Wetbulb zero: 609.42 mb = 4295.93 m = 14094.08 ft Precipitable water: 1.87 inches Sfc-500 mean rel hum: 65.09 % Est. max temperature: 33.31 C = 91.95 F Sfc-Lift cond lev (LCL): 974.76 mb = 325.98 m = 1069.47 ft T: 22.89 C 700-500 lapse rate: 5.54 C/km ThetaE index: 11.70 C Layer 903.0- 761.0 mb Conv cond level (CCL): 926.46 mb = 769.20 m = 2523.59 ft Mean mixing ratio: 15.95 g/kg Conv temperature: 27.39 C = 81.30 F Cap Strength: 2.51 C Lifted Index: -0.17 C Risk: Thunderstorms probable Lifted Index @300 mb: 1.96 C Lifted Index @700 mb: 0.98 C Showalter Index: 4.98 C Risk: None Total Totals Index: 38.40 C Risk: None Vertical Totals Index: 23.70 C Cross Totals Index: 14.70 C K Index: 20.50 Risk: 20-40 % chance of thunderstorms Sweat Index: 148.60 Risk: None Energy Index: 1.70 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 64.74 J/kg Max Up Vert Vel: 11.38 m/s Conv Inhibition (B-): 83.29 J/kg Cap Strength: 2.51 C Lift Cond Lev (LCL): 938.12 mb = 660.16 m = 2165.84 ft Lev Free Conv (LFC): 773.12 mb = 2319.49 m = 7609.79 ft Equ Level (EL): 743.12 mb = 2652.91 m = 8703.67 ft B at Equ Level: 8.85 J/kg Max Parcel Lev (MPL): 713.12 mb = 2998.03 m = 9835.95 ft Wind level data Storm motion: 116 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 1012 19 65 1 -0.9 -0.4 | 302 8 6.4 -4.0 1 1000 103 65 1 -0.9 -0.4 | 302 8 6.4 -4.0 2 925 783 20 1 -0.3 -0.9 | 303 8 7.0 -4.5 3 850 1515 80 11 -10.8 -1.9 | 33 7 -3.5 -5.5 4 700 3153 70 17 -16.0 -5.8 | 43 13 -8.7 -9.4 5 500 5880 200 9 3.1 8.5 | 245 11 10.4 4.8 6 400 7600 220 17 10.9 13.0 | 243 21 18.2 9.4 7 300 9720 200 21 7.2 19.7 | 222 22 14.5 16.1 8 250 10990 210 17 8.5 14.7 | 235 19 15.8 11.1 9 200 12470 200 25 8.6 23.5 | 219 25 15.9 19.9 10 150 14260 165 44 -11.4 42.5 | 174 39 -4.1 38.9 11 100 16610 245 31 28.1 13.1 | 255 37 35.4 9.5 Wind Parameters Mean winds (0-6000m): 86.3 at 10.9 knts Storm direction: 116.3 at 8.2 knts Shear (0-3000m) pos: 1.8 neg: 1.0 tot: 2.8 10-3/s Storm rel Dir Shear (0-3000m): 100.3 deg Storm rel helicity (0-3000m) pos: 27.5 neg: -0.0 tot: 27.4 m^2/s^2 ave: 9.1 10^-3 m/s^2 rel: 0.72 Storm rel vorticity (0-3000m) horiz: 3.2 stream: 2.3 10^-3/s Energy-Hel index: 0.01 Bulk Rich Number: 4.86 Bulk Shear: 13.33 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 54 1 303 8| 0.0 0.5 0.5| 0.3 0.0 0.3 0.6 0.31| 0.5 0.2 1000 41 1 306 8| 1.7 0.2 1.9| 7.6 -0.0 7.6 7.6 0.85| 2.1 1.8 1500 72 3 319 6| 3.5 0.2 3.7| 24.3 -0.0 24.2 16.2 0.94| 4.4 4.1 2000 75 5 338 5| 2.6 0.5 3.1| 25.8 -0.0 25.7 12.9 0.87| 3.8 3.3 2500 75 7 356 5| 2.1 0.8 2.9| 26.9 -0.0 26.8 10.7 0.79| 3.4 2.7 3000 74 9 9 6| 1.8 1.0 2.8| 27.5 -0.0 27.4 9.1 0.72| 3.2 2.3 4000 78 10 26 6| 1.6 0.8 2.4| 50.9 -0.0 50.9 12.7 0.75| 3.9 3.0 5000 86 11 39 6| 1.6 0.6 2.2| 68.6 -0.0 68.6 13.7 0.81| 4.3 3.5 6000 86 11 39 6| 1.4 0.5 1.9| 86.0 -0.6 85.4 14.2 0.81| 4.3 3.5 Wrote GIF file: /home/apache/climate/data/raob//VVTS/skewt/VVTS.skewt.20251218.00.gif