UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025041811.upa.cvt Date: 1100Z 18 APR 25 Searching for FSSS... Searching the city database file for: FSSS ... Date:1100Z 18 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 1008 4 31.6 23.6 63 8.0 25.7 240 7 304.1 307.5 298.5 359.2 18.49 1 1000 78 30.4 23.4 66 7.0 25.2 225 5 303.5 307.0 298.4 358.3 18.41 2 925 770 23.6 20.5 83 3.1 21.4 285 4 303.4 306.5 297.3 352.8 16.63 3 850 1504 18.4 15.1 81 3.3 16.2 270 8 305.4 307.8 295.2 343.7 12.80 4 700 3145 10.2 3.2 62 7.0 6.2 195 7 313.8 315.1 293.2 335.4 6.90 5 500 5870 -4.3 -17.3 36 13.0 -9.1 50 7 327.8 328.2 293.0 334.6 1.97 6 400 7600 -13.9 -24.9 39 11.0 -17.1 195 15 336.9 337.2 294.7 341.6 1.27 7 300 9720 -29.9 -50.9 11 21.0 -31.9 245 15 343.2 343.3 295.2 343.7 0.12 8 250 10990 -40.3 -54.3 21 14.0 -41.1 225 15 346.2 346.2 295.8 346.6 0.10 9 200 12470 -53.3 -65.3 22 12.0 -53.6 330 2 348.4 348.4 296.3 348.5 0.03 10 150 14260 -66.5 -76.5 23 10.0 -66.5 300 15 355.5 355.5 297.8 355.6 0.01 11 101 16564 -80.3 -85.3 43 5.0 -80.3 130 24 371.5 371.5 300.8 371.5 0.00 12 100 16620 -80.3 -85.3 43 5.0 -80.3 130 24 372.6 372.6 301.0 372.6 0.00 TRP 101 16564 -80.3 -85.3 43 5.0 -80.3 130 24 371.5 371.5 300.8 371.5 0.00 WND Sounding variables and indices 1000-500 mb thick: 5792.00 m Freezing level: 559.31 mb = 5061.90 m = 16607.07 ft Wetbulb zero: 619.28 mb = 4137.26 m = 13573.52 ft Precipitable water: 2.04 inches Sfc-500 mean rel hum: 62.03 % Est. max temperature: 32.75 C = 90.95 F Sfc-Lift cond lev (LCL): 898.41 mb = 1023.15 m = 3356.76 ft T: 21.81 C 700-500 lapse rate: 5.32 C/km ThetaE index: 24.56 C Layer 1000.0- 400.0 mb Conv cond level (CCL): 877.25 mb = 1230.12 m = 4035.77 ft Mean mixing ratio: 17.36 g/kg Conv temperature: 32.23 C = 90.02 F Cap Strength: 0.73 C Lifted Index: -3.15 C Risk: Severe thunderstorms possible Lifted Index @300 mb: -4.26 C Lifted Index @700 mb: -1.77 C Showalter Index: 1.01 C Risk: Showers probable Total Totals Index: 42.10 C Risk: None Vertical Totals Index: 22.70 C Cross Totals Index: 19.40 C K Index: 30.80 Risk: 60-80 % chance of thunderstorms Sweat Index: 204.20 Risk: None Energy Index: -1.76 Risk: Scattered severe thunderstorms Parcel Indices Parcel: using 100 mb layer CAPE (B+): 1455.34 J/kg Max Up Vert Vel: 53.95 m/s Conv Inhibition (B-): 6.75 J/kg Cap Strength: 0.73 C Lift Cond Lev (LCL): 892.01 mb = 1085.24 m = 3560.44 ft Lev Free Conv (LFC): 867.01 mb = 1331.99 m = 4370.00 ft Equ Level (EL): 147.01 mb = 14377.25 m = 47168.89 ft B at Equ Level: 1440.06 J/kg Wind level data Storm motion: 256 at 5 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 1008 4 240 7 6.1 3.5 | 207 3 1.2 2.3 1 1000 78 225 5 3.5 3.5 | 149 3 -1.4 2.3 2 925 770 285 4 3.9 -1.0 | 25 2 -1.0 -2.3 3 850 1504 270 8 8.0 -0.0 | 292 3 3.1 -1.2 4 700 3145 195 7 1.8 6.8 | 151 6 -3.1 5.5 5 500 5870 50 7 -5.4 -4.5 | 61 12 -10.3 -5.7 6 400 7600 195 15 3.9 14.5 | 176 13 -1.0 13.3 7 300 9720 245 15 13.6 6.3 | 240 10 8.7 5.1 8 250 10990 225 15 10.6 10.6 | 211 11 5.7 9.4 9 200 12470 330 2 1.0 -1.7 | 53 5 -3.9 -3.0 10 150 14260 300 15 13.0 -7.5 | 317 12 8.1 -8.7 11 101 16564 130 24 -18.4 15.4 | 121 27 -23.3 14.2 12 100 16620 130 24 -18.4 15.4 | 121 27 -23.3 14.2 Wind Parameters Mean winds (0-6000m): 225.9 at 6.7 knts Storm direction: 255.9 at 5.1 knts Shear (0-3000m) pos: 0.8 neg: 1.4 tot: 2.1 10-3/s Storm rel Dir Shear (0-3000m): -50.4 deg Storm rel helicity (0-3000m) pos: 0.0 neg: -12.1 tot: -12.1 m^2/s^2 ave: -4.0 10^-3 m/s^2 rel: -0.81 Storm rel vorticity (0-3000m) horiz: 3.5 stream: -2.8 10^-3/s Energy-Hel index: 0.00 Bulk Rich Number: 1955.15 Bulk Shear: 0.74 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 ------------------------------------------------------------------------------- 500 241 5 151 1| 3.5 0.0 3.5| 0.0 -1.7 -1.7 -3.4 -0.74| 5.6 -4.2 1000 257 5 60 0| 2.3 0.0 2.3| 0.0 -2.6 -2.6 -2.6 -0.69| 4.3 -2.9 1500 264 5 332 1| 1.6 1.0 2.6| 0.0 -4.4 -4.4 -2.9 -0.74| 3.9 -2.9 2000 262 6 295 1| 1.2 1.1 2.3| 0.0 -6.7 -6.7 -3.4 -0.79| 3.7 -2.9 2500 256 6 258 1| 0.9 1.3 2.2| 0.0 -9.1 -9.1 -3.6 -0.81| 3.6 -2.9 3000 249 6 227 2| 0.8 1.4 2.1| 0.0 -12.1 -12.1 -4.0 -0.81| 3.5 -2.8 4000 232 7 185 3| 0.6 1.4 2.0| 0.0 -22.7 -22.7 -5.7 -0.80| 3.4 -2.8 5000 218 7 169 4| 0.5 1.3 1.7| 0.0 -40.4 -40.4 -8.1 -0.83| 3.4 -2.8 6000 226 7 179 3| 0.4 1.0 1.4| 3.3 -57.2 -53.9 -9.0 -0.80| 3.4 -2.7 Wrote GIF file: /home/apache/climate/data/raob//FSSS/skewt/FSSS.skewt.20250418.11.gif