UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025042812.upa.cvt Date: 1200Z 28 APR 25 Searching for X8341... Searching the city database file for: X8341 ... Date:1200Z 28 APR 25 Station: X8341 WMO ident: 38341 Latitude: 42.85 Longitude: 71.38 ------------------------------------------------------------------------------- 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 109 SFC 940 660 33.6 17.6 39 16.0 22.2 30 5 312.2 314.8 297.5 354.0 13.59 2 914 909 30.0 11.0 31 19.0 17.6 326 8 311.0 312.8 294.0 338.9 9.05 3 912 928 30.0 12.0 33 18.0 18.1 327 8 311.2 313.1 294.6 341.1 9.70 4 869 1349 23.8 8.8 38 15.0 14.4 332 5 309.1 310.7 292.9 334.2 8.20 5 853 1509 23.0 9.0 41 14.0 14.2 335 3 309.9 311.5 293.3 335.9 8.47 6 692 3251 3.4 -13.6 28 17.0 -3.0 309 10 307.3 307.6 286.5 313.5 1.93 7 676 3439 2.6 -14.4 27 17.0 -3.7 306 11 308.4 308.8 286.9 314.4 1.85 8 675 3451 2.6 -1.0 77 3.6 0.8 306 11 308.6 309.5 290.2 324.9 5.27 9 558 4957 -5.3 -6.4 92 1.1 -5.8 283 22 316.5 317.3 291.7 330.1 4.25 10 555 4999 -5.3 -6.7 90 1.4 -6.0 282 23 317.0 317.8 291.8 330.4 4.17 11 541 5197 -8.9 -10.1 91 1.2 -9.4 279 24 315.0 315.6 290.5 325.6 3.28 12 500 5800 -12.5 -15.4 79 2.9 -13.5 270 29 317.8 318.2 290.4 325.4 2.31 13 481 6095 -13.9 -17.0 77 3.1 -14.9 267 28 319.6 320.0 290.7 326.6 2.10 14 451 6577 -19.7 -22.7 77 3.0 -20.4 263 26 318.3 318.5 289.6 322.9 1.37 15 450 6594 -19.7 -24.7 64 5.0 -20.9 263 26 318.5 318.7 289.5 322.4 1.15 16 432 6895 -22.7 -26.9 69 4.2 -23.6 260 25 318.4 318.6 289.3 321.8 0.98 17 420 7099 -26.5 -30.4 70 3.9 -27.2 258 24 316.1 316.2 288.3 318.6 0.73 18 400 7450 -28.5 -33.1 65 4.6 -29.2 255 23 317.9 318.1 288.8 320.0 0.59 19 379 7834 -31.5 -36.3 63 4.8 -32.1 262 27 318.9 319.0 288.9 320.6 0.45 TRP WND Sounding variables and indices 1000-500 mb thick: 5691.00 m Freezing level: 636.49 mb = 3946.74 m = 12948.47 ft Wetbulb zero: 720.29 mb = 2917.48 m = 9571.68 ft Precipitable water: 1.03 inches Sfc-500 mean rel hum: 58.55 % Est. max temperature: 30.54 C = 86.97 F Sfc-Lift cond lev (LCL): 746.28 mb = 2622.28 m = 8603.18 ft T: 10.48 C 700-500 lapse rate: 6.42 C/km ThetaE index: 15.14 C Layer 914.0- 912.0 mb Conv cond level (CCL): 727.14 mb = 2838.68 m = 9313.15 ft Mean mixing ratio: 9.33 g/kg Conv temperature: 29.47 C = 85.04 F Cap Strength: -2.61 C Lifted Index: -5.31 C Risk: Severe thunderstorms probable Lifted Index @700 mb: -2.87 C Showalter Index: -3.73 C Risk: Severe thunderstorms possible Total Totals Index: 56.29 C Risk: Severe Thunderstorms probable Vertical Totals Index: 35.17 C Cross Totals Index: 21.12 C K Index: 26.95 Risk: 40-60 % chance of thunderstorms Sweat Index: 284.93 Risk: None Energy Index: -2.08 Risk: Severe Thunderstorms probable Parcel Indices Parcel: using 100 mb layer CAPE (B+): 1074.77 J/kg Max Up Vert Vel: 46.36 m/s Conv Inhibition (B-): 10.06 J/kg Cap Strength: 1.79 C Lift Cond Lev (LCL): 703.64 mb = 3112.20 m = 10210.49 ft Lev Free Conv (LFC): 698.64 mb = 3171.58 m = 10405.31 ft Wind level data Storm motion: 312 at 11 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 ---------------------------------------------------------- 0 940 660 30 5 -2.5 -4.3 | 106 11 -10.9 3.2 1 925 790 325 9 5.2 -7.4 | 93 3 -3.3 0.2 2 850 1537 335 3 1.3 -2.7 | 124 9 -7.2 4.8 3 700 3142 310 9 6.9 -5.8 | 139 2 -1.5 1.8 4 500 5800 270 29 29.0 -0.0 | 250 22 20.6 7.6 5 400 7450 255 23 22.2 6.0 | 226 19 13.8 13.5 6 300 9300 295 46 41.7 -19.4 | 290 35 33.3 -11.9 Wind Parameters Mean winds (0-6000m): 281.8 at 15.1 knts Storm direction: 311.8 at 11.3 knts Shear (0-3000m) pos: 0.4 neg: 2.7 tot: 3.1 10-3/s Storm rel Dir Shear (0-3000m): 148.1 deg Storm rel helicity (0-3000m) pos: 7.1 neg: -5.9 tot: 1.2 m^2/s^2 ave: 0.4 10^-3 m/s^2 rel: 0.18 Storm rel vorticity (0-3000m) horiz: 4.2 stream: 0.8 10^-3/s Energy-Hel index: 0.03 Bulk Rich Number: 58.38 Bulk Shear: 18.41 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 ------------------------------------------------------------------------------- 500 332 7 102 5| 0.0 5.7 5.7| 2.4 -4.9 -2.5 -5.1 -0.05| 11.1 -0.6 1000 331 6 114 6| 1.3 2.9 4.2| 4.9 -5.2 -0.3 -0.3 0.05| 7.3 0.3 1500 330 5 117 6| 0.9 2.5 3.4| 4.9 -5.8 -0.9 -0.6 0.02| 5.5 0.1 2000 326 6 119 6| 0.7 2.4 3.1| 5.1 -5.9 -0.8 -0.4 0.02| 4.7 0.1 2500 321 6 122 5| 0.5 2.4 2.9| 5.8 -5.9 -0.0 -0.0 0.07| 4.2 0.3 3000 317 7 124 5| 0.4 2.7 3.1| 7.1 -5.9 1.2 0.4 0.18| 4.2 0.8 4000 305 9 160 2| 0.3 3.1 3.4| 7.7 -7.0 0.7 0.2 0.14| 4.3 0.6 5000 290 12 225 5| 0.3 3.3 3.5| 7.7 -20.0 -12.3 -2.5 0.04| 4.4 0.2 6000 282 15 235 8| 0.2 2.6 2.8| 7.7 -49.5 -41.8 -7.0 -0.07| 4.2 -0.3 Wrote GIF file: /home/apache/climate/data/raob//X8341/skewt/X8341.skewt.20250428.12.gif