UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025120912.upa.cvt Date: 1200Z 9 DEC 25 Searching for LTBM... Searching the city database file for: LTBM ... Date:1200Z 9 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 127 1 925 780 SFC 901 997 12.0 4.0 58 8.0 7.8 55 15 293.8 294.8 285.4 310.2 5.66 3 850 1484 7.2 2.2 70 5.0 4.6 65 15 293.7 294.6 284.9 309.1 5.28 4 765 2338 -1.1 -2.2 92 1.1 -1.6 76 13 293.7 294.5 283.9 306.2 4.25 5 751 2485 -1.5 -3.5 86 2.0 -2.4 78 12 294.8 295.5 284.0 306.5 3.93 6 748 2517 -1.1 -3.9 81 2.8 -2.3 78 12 295.6 296.3 284.2 307.0 3.83 7 730 2712 -1.3 -6.3 69 5.0 -3.4 81 12 297.5 298.0 284.3 307.3 3.27 8 709 2944 -3.1 -8.1 68 5.0 -5.0 84 11 298.0 298.5 284.1 306.8 2.93 9 700 3045 -3.5 -9.5 63 6.0 -5.8 85 11 298.6 299.1 284.1 306.7 2.66 10 609 4134 -11.3 -18.3 56 7.0 -13.3 54 10 301.8 302.0 284.0 306.5 1.48 11 607 4159 -11.5 -18.5 56 7.0 -13.5 53 10 301.8 302.1 284.0 306.5 1.46 12 536 5103 -18.5 -32.5 28 14.0 -20.8 25 9 304.4 304.5 283.8 306.0 0.46 13 519 5344 -20.3 -34.3 28 14.0 -22.4 18 8 305.0 305.1 284.0 306.4 0.40 14 500 5620 -22.3 -35.3 30 13.0 -24.1 10 8 305.9 305.9 284.2 307.2 0.38 15 400 7210 -36.1 -47.1 31 11.0 -36.8 200 8 308.1 308.1 284.8 308.6 0.14 16 365 7838 -41.3 -54.3 23 13.0 -41.8 213 9 309.3 309.3 285.1 309.6 0.07 17 308 8969 -50.1 -63.1 20 13.0 -50.4 236 12 312.4 312.4 286.2 312.5 0.03 18 300 9140 -52.1 240 12 311.9 19 290 9361 -53.3 270 13 313.2 20 264 9968 -54.5 305 16 320.0 21 250 10320 -54.3 325 17 325.3 22 207 11529 -53.5 342 25 344.6 23 200 11750 -54.1 345 26 347.1 24 150 13580 -58.5 315 25 369.3 25 100 16120 -63.3 305 25 405.4 26 94 16505 -62.1 304 24 415.0 27 74 17987 -64.3 301 19 439.8 28 73 18071 -64.1 301 19 441.9 29 70 18330 -63.3 300 18 449.0 30 59 19385 -60.1 287 25 478.6 31 50 20410 -62.1 275 32 497.1 32 40 21786 -63.1 275 40 527.4 33 32 23161 -62.5 275 48 563.8 34 30 23560 -61.1 275 50 578.1 35 28 23990 -60.1 592.4 TRP 290 9361 -53.3 270 13 313.2 WND Sounding variables and indices 1000-500 mb thick: 5493.00 m Freezing level: 776.27 mb = 2224.90 m = 7299.44 ft Wetbulb zero: 786.97 mb = 2108.51 m = 6917.60 ft Precipitable water: 0.48 inches Sfc-500 mean rel hum: 58.85 % Est. max temperature: 13.02 C = 55.44 F Sfc-Lift cond lev (LCL): 798.15 mb = 1994.21 m = 6542.60 ft T: 2.24 C 700-500 lapse rate: 7.30 C/km ThetaE index: 4.03 C Layer 850.0- 751.0 mb Conv cond level (CCL): 784.92 mb = 2129.69 m = 6987.08 ft Mean mixing ratio: 5.22 g/kg Conv temperature: 11.96 C = 53.52 F Cap Strength: 1.26 C Lifted Index: 0.71 C Risk: Showers probable Lifted Index @300 mb: 2.31 C Lifted Index @700 mb: 1.17 C Showalter Index: 0.59 C Risk: Thunderstorms probable Total Totals Index: 54.00 C Risk: Scattered heavy thunderstorms Vertical Totals Index: 29.50 C Cross Totals Index: 24.50 C K Index: 25.70 Risk: 40-60 % chance of thunderstorms Sweat Index: 164.40 Risk: None Energy Index: -0.37 Risk: Scattered severe thunderstorms Parcel Indices Parcel: using 100 mb layer CAPE (B+): 5.79 J/kg Max Up Vert Vel: 3.40 m/s Conv Inhibition (B-): 0.19 J/kg Cap Strength: 1.19 C Lift Cond Lev (LCL): 785.04 mb = 2128.52 m = 6983.24 ft Lev Free Conv (LFC): 780.04 mb = 2180.31 m = 7153.16 ft Equ Level (EL): 740.04 mb = 2602.81 m = 8539.28 ft B at Equ Level: 3.08 J/kg Max Parcel Lev (MPL): 730.04 mb = 2711.38 m = 8895.50 ft Wind level data Storm motion: 90 at 8 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 ---------------------------------------------------------- 0 901 997 55 15 -12.3 -8.6 | 28 10 -4.5 -8.6 1 850 1484 65 15 -13.6 -6.3 | 43 9 -5.8 -6.3 2 700 3045 85 11 -11.0 -1.0 | 74 3 -3.1 -0.9 3 500 5620 10 8 -1.4 -7.9 | 321 10 6.4 -7.8 4 400 7210 200 8 2.7 7.5 | 234 13 10.5 7.6 5 300 9140 240 12 10.4 6.0 | 252 19 18.2 6.0 6 290 9361 270 13 13.0 -0.0 | 270 21 20.8 0.0 7 250 10320 325 17 9.8 -13.9 | 308 22 17.6 -13.9 8 200 11750 345 26 6.7 -25.1 | 330 29 14.5 -25.1 9 150 13580 315 25 17.7 -17.7 | 305 31 25.5 -17.6 10 100 16120 305 25 20.5 -14.3 | 297 32 28.3 -14.3 11 70 18330 300 18 15.6 -9.0 | 291 25 23.4 -9.0 12 50 20410 275 32 31.9 -2.8 | 274 40 39.7 -2.7 13 30 23560 275 50 49.8 -4.4 | 274 58 57.6 -4.3 Wind Parameters Mean winds (0-6000m): 59.7 at 10.4 knts Storm direction: 89.7 at 7.8 knts Shear (0-3000m) pos: 1.3 neg: 0.9 tot: 2.2 10-3/s Storm rel Dir Shear (0-3000m): -22.1 deg Storm rel helicity (0-3000m) pos: 10.2 neg: -4.8 tot: 5.4 m^2/s^2 ave: 1.8 10^-3 m/s^2 rel: 0.05 Storm rel vorticity (0-3000m) horiz: 2.3 stream: 0.1 10^-3/s Energy-Hel index: 0.00 Bulk Rich Number: 2.08 Bulk Shear: 2.78 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 60 15 35 9| 2.7 0.0 2.7| 5.8 0.0 5.8 11.5 0.90| 2.7 2.5 1000 64 15 40 8| 2.2 0.0 2.2| 7.8 0.0 7.8 7.8 0.72| 2.4 1.8 1500 67 14 44 8| 2.1 0.0 2.1| 9.2 0.0 9.2 6.2 0.65| 2.3 1.5 2000 70 14 46 7| 2.0 0.0 2.0| 10.2 0.0 10.2 5.1 0.62| 2.2 1.4 2500 71 13 47 6| 1.6 0.5 2.1| 10.2 -2.2 8.1 3.2 0.26| 2.3 0.6 3000 70 13 44 6| 1.3 0.9 2.2| 10.2 -4.8 5.4 1.8 0.05| 2.3 0.1 4000 66 12 32 6| 1.0 1.2 2.2| 10.2 -11.6 -1.3 -0.3 -0.16| 2.4 -0.4 5000 60 11 17 6| 0.8 1.7 2.4| 10.2 -30.8 -20.6 -4.1 -0.35| 2.8 -1.0 6000 60 10 13 5| 0.7 1.5 2.2| 10.2 -88.7 -78.4 -13.1 -0.57| 3.6 -2.0 Wrote GIF file: /home/apache/climate/data/raob//LTBM/skewt/LTBM.skewt.20251209.12.gif