UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025120812.upa.cvt Date: 1200Z 8 DEC 25 Searching for LTBM... Searching the city database file for: LTBM ... Date:1200Z 8 DEC 25 Station: LTBM WMO ident: 17240 Latitude: 37.75 Longitude: 30.55 Elevation: 997.00 ------------------------------------------------------------------------------- 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 ------------------------------------------------------------------------------- 0 1000 107 1 925 763 SFC 900 997 13.0 6.0 62 7.0 9.1 65 9 294.9 296.1 286.7 313.9 6.52 3 850 1469 8.2 1.2 61 7.0 4.7 60 15 294.7 295.6 285.0 309.1 4.91 4 757 2411 -1.3 -5.7 72 4.4 -3.1 294.4 295.0 283.1 304.2 3.30 5 719 2822 -2.3 -8.3 63 6.0 -4.6 297.6 298.2 283.9 306.3 2.84 6 700 3034 -4.1 -10.1 63 6.0 -6.3 10 11 297.9 298.4 283.7 305.7 2.53 7 663 3461 -6.3 -11.3 68 5.0 -8.1 300.1 300.6 284.4 307.6 2.43 8 652 3592 -7.3 -14.3 57 7.0 -9.6 300.4 300.8 284.0 306.5 1.94 9 500 5610 -21.3 -36.3 25 15.0 -23.4 250 11 307.1 307.1 284.7 308.3 0.34 10 475 5986 -24.5 -41.5 19 17.0 -26.4 307.6 307.7 284.7 308.4 0.21 11 464 6156 -26.1 -39.1 28 13.0 -27.6 307.7 307.8 284.8 308.7 0.28 12 400 7210 -35.1 -49.1 23 14.0 -36.0 245 22 309.4 309.4 285.2 309.8 0.11 13 300 9150 -51.3 210 50 313.0 14 250 10320 -61.3 220 37 314.9 15 246 10420 -61.5 220 32 316.1 16 245 10446 -61.5 316.5 17 232 10784 -62.3 320.2 18 202 11648 -59.3 337.9 19 200 11710 -59.3 240 22 338.9 20 150 13530 -55.3 280 24 374.8 21 137 14108 -57.1 381.5 22 100 16080 -62.3 290 26 407.4 23 89 16804 -61.1 423.6 24 70 18300 -61.3 295 29 453.2 25 50 20400 -61.1 260 32 499.5 26 48 20653 -61.5 504.4 27 41 21631 -61.1 528.7 28 30 23570 -61.3 275 53 577.5 29 26 24463 -58.1 610.7 30 20 26120 -56.3 265 75 663.8 31 17 27158 -56.1 696.1 32 15 27956 -56.3 720.8 33 12 29385 -54.1 776.1 34 10 30560 -53.5 265 111 819.8 35 8.4 31687 -51.3 870.4 36 7.5 32431 -47.1 916.1 37 6.8 33091 -39.1 975.5 38 5.6 34431 -36.1 1044.4 TRP 246 10420 -61.5 220 32 316.1 WND 5.0 275 158 Sounding variables and indices 1000-500 mb thick: 5503.00 m Freezing level: 769.73 mb = 2282.06 m = 7486.97 ft Wetbulb zero: 793.82 mb = 2024.83 m = 6643.05 ft Precipitable water: 0.46 inches Sfc-500 mean rel hum: 54.26 % Est. max temperature: 13.06 C = 55.51 F Sfc-Lift cond lev (LCL): 809.73 mb = 1863.60 m = 6114.08 ft T: 4.22 C 700-500 lapse rate: 6.68 C/km ThetaE index: 9.66 C Layer 850.0- 719.0 mb Conv cond level (CCL): 771.80 mb = 2253.52 m = 7393.34 ft Mean mixing ratio: 5.07 g/kg Conv temperature: 12.57 C = 54.63 F Cap Strength: 0.77 C Lifted Index: 1.30 C Risk: Showers probable Lifted Index @300 mb: 2.67 C Lifted Index @700 mb: 0.22 C Showalter Index: 1.53 C Risk: Showers probable Total Totals Index: 52.00 C Risk: Scattered heavy thunderstorms Vertical Totals Index: 29.50 C Cross Totals Index: 22.50 C K Index: 24.70 Risk: 20-40 % chance of thunderstorms Sweat Index: 115.40 Risk: None Energy Index: -0.16 Risk: Scattered severe thunderstorms Parcel Indices Parcel: using 100 mb layer CAPE (B+): 9.31 J/kg Max Up Vert Vel: 4.32 m/s Conv Inhibition (B-): 1.26 J/kg Cap Strength: 1.18 C Lift Cond Lev (LCL): 768.69 mb = 2286.36 m = 7501.08 ft Lev Free Conv (LFC): 763.69 mb = 2339.40 m = 7675.12 ft Equ Level (EL): 733.69 mb = 2660.31 m = 8727.93 ft B at Equ Level: 8.94 J/kg Max Parcel Lev (MPL): 683.69 mb = 3219.55 m = 10562.70 ft Wind level data ------------------------------------ TRUE/GROUND REL LEV P H DIR SPD U V mb m knt m/s ------------------------------------ 0 5 42545 275 158 157.4 -13.8 1 900 997 65 9 -8.2 -3.8 2 850 1469 60 15 -13.0 -7.5 3 700 3034 10 11 -1.9 -10.8 4 500 5610 250 11 10.3 3.8 5 400 7210 245 22 19.9 9.3 6 300 9150 210 50 25.0 43.3 7 250 10320 220 37 23.8 28.3 8 246 10420 220 32 20.6 24.5 9 200 11710 240 22 19.1 11.0 10 150 13530 280 24 23.6 -4.2 11 100 16080 290 26 24.4 -8.9 12 70 18300 295 29 26.3 -12.3 13 50 20400 260 32 31.5 5.6 14 30 23570 275 53 52.8 -4.6 15 20 26120 265 75 74.7 6.5 16 10 30560 265 111 110.6 9.7 Wind Parameters Energy-Hel index: -0.58 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 NO DATA | | | 1000 NO DATA | | | 1500 NO DATA | | | 2000 NO DATA | | | 2500 NO DATA | | | 3000 NO DATA | | | 4000 NO DATA | | | 5000 NO DATA | | | 6000 NO DATA | | | Wrote GIF file: /home/apache/climate/data/raob//LTBM/skewt/LTBM.skewt.20251208.12.gif