UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025120512.upa.cvt Date: 1200Z 5 DEC 25 Searching for X8341... Searching the city database file for: X8341 ... Date:1200Z 5 DEC 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 247 SFC 952 648 6.0 2.8 80 3.2 4.5 45 5 283.1 284.0 279.9 296.8 4.91 2 951 656 5.2 4.5 95 0.7 4.9 43 5 282.4 283.3 280.3 297.8 5.55 3 940 751 4.4 3.4 93 1.0 3.9 21 5 282.5 283.4 280.0 296.9 5.20 4 925 881 4.2 2.5 89 1.7 3.4 350 5 283.6 284.5 280.2 297.5 4.95 5 911 1005 3.4 -1.1 72 4.5 1.4 338 5 284.0 284.7 279.1 295.0 3.87 6 853 1536 0.0 -0.1 99 0.1 -0.0 288 7 285.9 286.6 280.7 298.5 4.45 7 850 1564 -0.3 -0.4 99 0.1 -0.3 285 7 285.8 286.6 280.6 298.2 4.37 8 700 3094 -9.3 -9.3 100 0.0 -9.3 245 21 292.2 292.7 281.4 300.2 2.70 9 611 4131 -17.3 -17.4 99 0.1 -17.3 243 23 294.6 294.8 281.1 299.5 1.60 10 596 4317 -18.9 -22.7 72 3.8 -19.7 243 24 294.8 295.0 280.5 298.1 1.03 11 571 4636 -20.3 -20.3 100 0.0 -20.3 242 25 296.8 297.0 281.7 301.0 1.33 12 505 5538 -25.5 -27.5 83 2.0 -25.8 240 27 301.1 301.2 282.8 303.7 0.79 13 500 5610 -26.1 -28.1 83 2.0 -26.4 240 27 301.2 301.4 282.9 303.7 0.76 14 400 7180 -39.5 -41.4 82 1.9 -39.6 235 31 303.7 303.7 283.2 304.5 0.25 15 300 9080 -55.9 -60.3 58 4.4 -56.0 220 40 306.6 306.6 284.1 306.7 0.04 16 292 9252 -57.5 -61.9 57 4.4 -57.6 222 39 306.7 306.7 284.1 306.8 0.03 17 253 10155 -60.3 -65.2 52 4.9 -60.3 234 36 315.3 315.3 287.2 315.4 0.02 18 250 10230 -59.7 -64.6 53 4.9 -59.7 235 36 317.3 317.3 287.9 317.4 0.03 19 214 11206 -57.9 -63.9 46 6.0 -58.0 334.5 334.5 293.0 334.7 0.03 TRP WND Sounding variables and indices 1000-500 mb thick: 5363.00 m Freezing level: 853.00 mb = 1535.77 m = 5038.54 ft Wetbulb zero: 854.54 mb = 1521.24 m = 4990.88 ft Precipitable water: 0.55 inches Sfc-500 mean rel hum: 94.19 % Est. max temperature: 10.58 C = 51.05 F Sfc-Lift cond lev (LCL): 906.32 mb = 1046.56 m = 3433.55 ft T: 3.13 C 700-500 lapse rate: 6.68 C/km ThetaE index: 2.48 C Layer 911.0- 853.0 mb Conv cond level (CCL): 852.25 mb = 1542.82 m = 5061.67 ft Mean mixing ratio: 4.47 g/kg Conv temperature: 8.71 C = 47.68 F Cap Strength: 5.10 C Lifted Index: 5.11 C Risk: None Lifted Index @300 mb: 6.95 C Lifted Index @700 mb: 1.99 C Showalter Index: 4.11 C Risk: None Total Totals Index: 51.50 C Risk: Scattered heavy thunderstorms Vertical Totals Index: 25.80 C Cross Totals Index: 25.70 C K Index: 25.40 Risk: 40-60 % chance of thunderstorms Sweat Index: 91.00 Risk: None Energy Index: 1.08 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 13.50 J/kg Max Up Vert Vel: 5.20 m/s Conv Inhibition (B-): 2313.83 J/kg Cap Strength: 5.11 C Lift Cond Lev (LCL): 872.91 mb = 1349.57 m = 4427.66 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 275 at 15 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 ---------------------------------------------------------- 0 952 648 45 5 -3.5 -3.5 | 83 18 -18.2 -2.2 1 925 881 350 5 0.9 -4.9 | 75 14 -13.8 -3.6 2 850 1564 285 7 6.8 -1.8 | 87 8 -7.9 -0.5 3 700 3094 245 21 19.0 8.9 | 203 11 4.3 10.2 4 500 5610 240 27 23.4 13.5 | 210 17 8.7 14.8 5 400 7180 235 31 25.4 17.8 | 209 22 10.7 19.1 6 300 9080 220 40 25.7 30.6 | 199 34 11.0 32.0 7 250 10230 235 36 29.5 20.6 | 214 27 14.8 22.0 Wind Parameters Mean winds (0-6000m): 245.2 at 19.7 knts Storm direction: 275.2 at 14.8 knts Shear (0-3000m) pos: 0.0 neg: 4.6 tot: 4.6 10-3/s Storm rel Dir Shear (0-3000m): 122.4 deg Storm rel helicity (0-3000m) pos: 13.5 neg: -11.8 tot: 1.7 m^2/s^2 ave: 0.6 10^-3 m/s^2 rel: 0.22 Storm rel vorticity (0-3000m) horiz: 5.2 stream: 1.2 10^-3/s Energy-Hel index: 0.00 Bulk Rich Number: 0.21 Bulk Shear: 63.49 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 ------------------------------------------------------------------------------- 500 354 5 75 15| 0.0 7.2 7.2| 0.0 -11.7 -11.7 -23.5 -0.38| 7.5 -2.8 1000 320 6 74 11| 0.0 5.8 5.8| 5.1 -11.7 -6.6 -6.6 -0.05| 6.5 -0.3 1500 296 7 77 8| 0.0 5.6 5.6| 7.5 -11.7 -4.2 -2.8 0.09| 6.1 0.6 2000 278 9 90 6| 0.0 5.5 5.5| 10.9 -11.7 -0.8 -0.4 0.25| 6.0 1.5 2500 263 11 126 4| 0.0 5.3 5.3| 12.0 -11.8 0.2 0.1 0.22| 6.0 1.3 3000 258 13 152 5| 0.0 4.6 4.6| 13.5 -11.8 1.7 0.6 0.22| 5.2 1.2 4000 251 16 180 6| 0.0 3.8 3.8| 16.0 -11.8 4.3 1.1 0.23| 4.2 1.0 5000 248 18 193 8| 0.0 3.3 3.3| 18.0 -11.8 6.2 1.2 0.23| 3.7 0.8 6000 245 20 198 10| 0.0 3.0 3.0| 18.0 -12.7 5.2 0.9 0.20| 3.3 0.7 Wrote GIF file: /home/apache/climate/data/raob//X8341/skewt/X8341.skewt.20251205.12.gif