UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025041900.upa.cvt Date: 0000Z 19 APR 25 Searching for VV811... Searching the city database file for: VV811 ... Date:0000Z 19 APR 25 Station: VV811 WMO ident: 48811 Latitude: 21.40 Longitude: 103.02 ------------------------------------------------------------------------------- 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 76 SFC 955 476 21.0 20.9 99 0.1 20.9 0 0 298.0 301.0 295.7 346.0 16.51 2 925 753 19.6 19.6 100 0.0 19.6 295 1 299.4 302.2 295.6 345.2 15.71 3 850 1485 18.8 14.6 77 4.2 16.0 235 17 305.8 308.1 295.0 343.0 12.39 4 700 3131 9.6 5.5 76 4.1 7.2 265 17 313.1 314.7 293.9 338.4 8.12 5 500 5850 -5.3 -14.3 49 9.0 -8.8 235 36 326.6 327.1 293.1 335.2 2.53 6 400 7570 -15.7 -20.2 68 4.5 -17.1 240 35 334.6 335.0 294.7 341.4 1.92 7 300 9680 -28.9 -61.9 3 33.0 -31.3 240 40 344.6 344.7 295.4 344.8 0.03 8 250 10950 -39.5 -57.5 13 18.0 -40.5 245 44 347.3 347.4 296.1 347.6 0.06 9 200 12430 -52.1 -72.1 7 20.0 -52.5 265 46 350.3 350.3 296.7 350.3 0.01 10 150 14250 -64.5 -78.5 13 14.0 -64.6 255 33 359.0 359.0 298.5 359.0 0.01 11 100 16640 -78.7 -86.7 26 8.0 -78.7 265 9 375.7 375.7 301.5 375.7 0.00 TRP WND Sounding variables and indices 1000-500 mb thick: 5774.00 m Freezing level: 571.14 mb = 4882.84 m = 16019.62 ft Wetbulb zero: 610.38 mb = 4238.13 m = 13904.46 ft Precipitable water: 1.76 inches Sfc-500 mean rel hum: 71.70 % Est. max temperature: 30.72 C = 87.29 F Sfc-Lift cond lev (LCL): 954.01 mb = 485.24 m = 1591.98 ft T: 20.95 C 700-500 lapse rate: 5.48 C/km ThetaE index: 10.80 C Layer 925.0- 400.0 mb Conv cond level (CCL): 809.42 mb = 1899.68 m = 6232.47 ft Mean mixing ratio: 14.72 g/kg Conv temperature: 30.51 C = 86.92 F Cap Strength: 2.37 C Lifted Index: -0.40 C Risk: Thunderstorms probable Lifted Index @300 mb: 2.49 C Lifted Index @700 mb: 0.50 C Showalter Index: 0.31 C Risk: Thunderstorms probable Total Totals Index: 44.00 C Risk: Scattered moderate thunderstorms Vertical Totals Index: 24.10 C Cross Totals Index: 19.90 C K Index: 34.60 Risk: 60-80 % chance of thunderstorms Sweat Index: 245.20 Risk: None Energy Index: -1.52 Risk: Scattered severe thunderstorms Parcel Indices Parcel: using 100 mb layer CAPE (B+): 67.11 J/kg Max Up Vert Vel: 11.59 m/s Conv Inhibition (B-): 109.46 J/kg Cap Strength: 2.35 C Lift Cond Lev (LCL): 886.36 mb = 1122.35 m = 3682.20 ft Lev Free Conv (LFC): 621.36 mb = 4093.94 m = 13431.39 ft Equ Level (EL): 391.36 mb = 7730.07 m = 25360.81 ft B at Equ Level: 67.09 J/kg Max Parcel Lev (MPL): 311.36 mb = 9407.28 m = 30863.41 ft Wind level data Storm motion: 274 at 16 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 ---------------------------------------------------------- 0 955 476 0 0 -0.0 -0.0 | 94 16 -16.3 1.1 1 925 753 295 1 0.9 -0.4 | 93 15 -15.4 0.7 2 850 1485 235 17 13.9 9.8 | 168 11 -2.3 10.8 3 700 3131 265 17 16.9 1.5 | 195 3 0.7 2.6 4 500 5850 235 36 29.5 20.6 | 211 25 13.2 21.7 5 400 7570 240 35 30.3 17.5 | 217 23 14.1 18.6 6 300 9680 240 40 34.6 20.0 | 221 28 18.4 21.1 7 250 10950 245 44 39.9 18.6 | 230 31 23.6 19.7 8 200 12430 265 46 45.8 4.0 | 260 30 29.6 5.1 9 150 14250 255 33 31.9 8.5 | 238 18 15.6 9.6 10 100 16640 265 9 9.0 0.8 | 104 8 -7.3 1.9 Wind Parameters Mean winds (0-6000m): 243.9 at 21.7 knts Storm direction: 273.9 at 16.3 knts Shear (0-3000m) pos: 1.3 neg: 3.3 tot: 4.6 10-3/s Storm rel Dir Shear (0-3000m): 121.9 deg Storm rel helicity (0-3000m) pos: 28.0 neg: -3.4 tot: 24.6 m^2/s^2 ave: 8.2 10^-3 m/s^2 rel: 0.44 Storm rel vorticity (0-3000m) horiz: 5.3 stream: 2.4 10^-3/s Energy-Hel index: 0.01 Bulk Rich Number: 1.23 Bulk Shear: 54.75 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 ------------------------------------------------------------------------------- 500 282 2 93 15| 0.0 6.0 6.0| 1.0 -3.4 -2.4 -4.8 -0.08| 6.3 -0.5 1000 240 7 113 11| 0.0 8.6 8.6| 21.1 -3.4 17.8 17.8 0.48| 10.2 4.9 1500 239 10 129 10| 0.8 5.8 6.6| 23.9 -3.4 20.5 13.7 0.47| 7.7 3.6 2000 243 12 138 9| 1.3 4.3 5.6| 25.5 -3.4 22.2 11.1 0.45| 6.5 2.9 2500 247 13 144 8| 1.6 3.5 5.1| 26.5 -3.4 23.1 9.3 0.44| 5.7 2.5 3000 250 14 149 7| 1.3 3.3 4.6| 28.0 -3.4 24.6 8.2 0.44| 5.3 2.4 4000 252 16 170 6| 1.0 3.5 4.5| 29.1 -4.0 25.1 6.3 0.36| 5.1 1.8 5000 248 19 188 8| 0.8 3.6 4.4| 29.1 -13.5 15.6 3.1 0.25| 5.0 1.3 6000 244 22 197 11| 0.7 3.3 4.0| 34.8 -20.8 14.0 2.3 0.22| 4.6 1.0 Wrote GIF file: /home/apache/climate/data/raob//VV811/skewt/VV811.skewt.20250419.00.gif