UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025041711.upa.cvt Date: 1100Z 17 APR 25 Searching for FSSS... Searching the city database file for: FSSS ... Date:1100Z 17 APR 25 Station: FSSS WMO ident: 63985 Latitude: -4.68 Longitude: 55.53 Elevation: 4.00 ------------------------------------------------------------------------------- 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 1009 4 32.2 23.2 59 9.0 25.5 160 4 304.6 307.9 298.4 358.4 18.02 1 1000 88 29.8 22.8 66 7.0 24.6 190 3 303.0 306.2 297.8 355.6 17.74 2 925 778 23.0 21.3 90 1.7 21.8 295 4 302.8 306.1 297.6 354.7 17.50 3 850 1512 18.0 18.0 100 0.0 18.0 255 11 305.0 307.9 296.9 351.2 15.46 4 700 3152 10.4 4.4 66 6.0 6.9 190 6 314.0 315.4 293.7 337.5 7.51 5 500 5880 -4.5 -12.5 54 8.0 -7.8 110 13 327.6 328.1 293.7 337.5 2.93 6 400 7600 -13.9 -44.9 5 31.0 -19.1 160 6 336.9 337.0 293.7 337.6 0.17 7 300 9720 -29.5 -51.5 10 22.0 -31.6 180 17 343.8 343.8 295.3 344.3 0.11 8 250 10990 -40.3 -57.3 15 17.0 -41.2 195 14 346.2 346.2 295.8 346.4 0.07 9 200 12470 -52.9 -64.9 22 12.0 -53.2 245 13 349.0 349.0 296.4 349.1 0.03 10 150 14270 -65.1 -81.1 9 16.0 -65.2 275 15 357.9 357.9 298.3 358.0 0.00 11 100 16630 -81.3 -85.6 48 4.3 -81.3 135 29 370.6 370.6 300.7 370.7 0.00 TRP WND Sounding variables and indices 1000-500 mb thick: 5792.00 m Freezing level: 560.40 mb = 5056.11 m = 16588.08 ft Wetbulb zero: 606.50 mb = 4314.38 m = 14154.63 ft Precipitable water: 2.23 inches Sfc-500 mean rel hum: 72.65 % Est. max temperature: 32.37 C = 90.26 F Sfc-Lift cond lev (LCL): 886.50 mb = 1147.07 m = 3763.32 ft T: 20.49 C 700-500 lapse rate: 5.46 C/km ThetaE index: 20.90 C Layer 1000.0- 500.0 mb Conv cond level (CCL): 891.16 mb = 1101.50 m = 3613.81 ft Mean mixing ratio: 17.58 g/kg Conv temperature: 31.43 C = 88.57 F Cap Strength: 0.48 C Lifted Index: -3.35 C Risk: Severe thunderstorms possible Lifted Index @300 mb: -3.86 C Lifted Index @700 mb: -1.57 C Showalter Index: -1.94 C Risk: Thunderstorms probable Total Totals Index: 45.00 C Risk: Scattered moderate thunderstorms Vertical Totals Index: 22.50 C Cross Totals Index: 22.50 C K Index: 34.50 Risk: 60-80 % chance of thunderstorms Sweat Index: 251.00 Risk: None Energy Index: -2.73 Risk: Severe Thunderstorms probable Parcel Indices Parcel: using 100 mb layer CAPE (B+): 1379.39 J/kg Max Up Vert Vel: 52.52 m/s Conv Inhibition (B-): 4.58 J/kg Cap Strength: 1.58 C Lift Cond Lev (LCL): 901.89 mb = 997.60 m = 3272.94 ft Lev Free Conv (LFC): 876.89 mb = 1241.62 m = 4073.51 ft Equ Level (EL): 156.89 mb = 13988.90 m = 45894.80 ft B at Equ Level: 1362.18 J/kg Wind level data Storm motion: 207 at 6 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 1009 4 160 4 -1.4 3.8 | 66 5 -4.2 -1.8 1 1000 88 190 3 0.5 3.0 | 41 3 -2.3 -2.6 2 925 778 295 4 3.6 -1.7 | 354 7 0.8 -7.3 3 850 1512 255 11 10.6 2.8 | 289 8 7.8 -2.7 4 700 3152 190 6 1.0 5.9 | 101 2 -1.8 0.3 5 500 5880 110 13 -12.2 4.4 | 86 15 -15.0 -1.1 6 400 7600 160 6 -2.1 5.6 | 91 5 -4.9 0.1 7 300 9720 180 17 0.0 17.0 | 166 12 -2.8 11.4 8 250 10990 195 14 3.6 13.5 | 186 8 0.8 7.9 9 200 12470 245 13 11.8 5.5 | 271 9 9.0 -0.1 10 150 14270 275 15 14.9 -1.3 | 300 14 12.1 -6.9 11 100 16630 135 29 -20.5 20.5 | 123 28 -23.3 14.9 Wind Parameters Mean winds (0-6000m): 176.7 at 8.3 knts Storm direction: 206.7 at 6.2 knts Shear (0-3000m) pos: 1.5 neg: 1.5 tot: 3.0 10-3/s Storm rel Dir Shear (0-3000m): 54.4 deg Storm rel helicity (0-3000m) pos: 0.2 neg: -27.7 tot: -27.5 m^2/s^2 ave: -9.2 10^-3 m/s^2 rel: -0.70 Storm rel vorticity (0-3000m) horiz: 4.7 stream: -3.3 10^-3/s Energy-Hel index: 0.00 Bulk Rich Number: 279.07 Bulk Shear: 4.94 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 ------------------------------------------------------------------------------- 500 216 3 17 3| 5.7 0.0 5.7| 0.0 -4.4 -4.4 -8.7 -0.81| 5.9 -4.8 1000 262 4 349 5| 4.6 0.0 4.6| 0.2 -8.8 -8.6 -8.6 -0.64| 5.5 -3.5 1500 261 5 331 5| 3.1 2.1 5.2| 0.2 -21.8 -21.6 -14.4 -0.77| 5.8 -4.5 2000 254 7 317 5| 2.3 1.8 4.1| 0.2 -25.5 -25.3 -12.7 -0.73| 5.4 -3.9 2500 248 7 308 5| 1.8 1.6 3.5| 0.2 -27.0 -26.8 -10.7 -0.69| 5.0 -3.4 3000 243 7 304 4| 1.5 1.5 3.0| 0.2 -27.7 -27.5 -9.2 -0.70| 4.7 -3.3 4000 229 7 290 3| 1.2 1.6 2.7| 0.6 -28.0 -27.4 -6.9 -0.60| 4.1 -2.5 5000 206 8 203 1| 0.9 1.7 2.6| 0.6 -32.4 -31.8 -6.4 -0.57| 3.8 -2.2 6000 177 8 130 4| 0.8 1.6 2.4| 2.2 -44.2 -42.1 -7.0 -0.56| 3.7 -2.1 Wrote GIF file: /home/apache/climate/data/raob//FSSS/skewt/FSSS.skewt.20250417.11.gif