UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025042700.upa.cvt Date: 0000Z 27 APR 25 Searching for LTBM... Searching the city database file for: LTBM ... Date:0000Z 27 APR 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 123 1 925 775 SFC 901 997 11.4 8.7 83 2.7 9.9 160 1 293.2 294.6 287.3 315.7 7.85 3 850 1480 8.8 4.6 75 4.2 6.5 295 3 295.4 296.5 286.6 313.6 6.26 4 700 3061 -1.7 -5.7 74 4.0 -3.4 250 9 300.6 301.3 285.8 311.5 3.57 5 697 3095 -1.1 -5.1 74 4.0 -2.9 250 9 301.6 302.3 286.4 313.1 3.75 6 688 3199 -2.9 -6.2 78 3.3 -4.3 251 10 300.8 301.4 285.8 311.4 3.49 7 566 4719 -13.3 -15.4 84 2.1 -13.9 256 17 305.8 306.2 286.1 312.3 2.04 8 534 5160 -17.3 -21.7 69 4.4 -18.4 258 19 306.1 306.4 285.4 310.2 1.26 9 500 5650 -21.7 -32.7 36 11.0 -23.4 260 21 306.6 306.7 284.7 308.3 0.49 10 494 5739 -21.1 -31.1 40 10.0 -22.8 260 23 308.4 308.5 285.4 310.3 0.58 11 472 6074 -23.1 -34.1 36 11.0 -24.7 261 30 309.9 310.0 285.9 311.5 0.45 12 453 6373 -24.5 -32.5 47 8.0 -25.8 262 37 311.8 312.0 286.6 313.8 0.55 13 435 6667 -26.1 -35.1 43 9.0 -27.3 263 43 313.5 313.5 287.1 315.0 0.44 14 400 7270 -29.1 -39.1 37 10.0 -30.3 265 57 317.2 317.2 288.2 318.3 0.32 15 352 8169 -35.3 -45.3 35 10.0 -36.1 265 60 320.6 320.7 289.2 321.3 0.19 16 328 8656 -39.0 -48.6 36 9.6 -39.6 265 62 322.1 322.1 289.5 322.6 0.14 17 300 9260 -43.7 -52.7 36 9.0 -44.1 265 59 323.8 323.8 290.0 324.1 0.10 18 250 10470 -51.9 -60.9 33 9.0 -52.1 265 47 328.9 328.9 291.5 329.1 0.04 19 233 10924 -53.5 -62.5 33 9.0 -53.7 270 46 333.2 333.2 292.6 333.3 0.04 20 229 11035 -53.9 -62.9 32 9.0 -54.1 271 45 334.2 334.2 292.9 334.4 0.04 21 200 11900 -55.5 275 41 344.9 22 150 13730 -57.1 260 41 371.7 23 149 13772 -56.7 260 41 373.1 24 100 16290 -57.3 275 39 417.0 25 78 17854 -60.3 261 25 441.5 26 70 18530 -60.1 255 19 455.8 27 58 19710 -58.1 255 14 485.5 28 50 20640 -60.7 255 10 500.4 29 49 20766 -60.9 254 10 502.9 30 42 21725 -61.5 243 10 524.0 31 37 22518 -58.5 234 9 551.1 32 30 23850 -54.9 220 9 595.0 33 23 25554 -53.7 249 13 645.5 34 20 26450 -54.9 265 15 668.1 35 17 27497 -52.7 271 20 707.0 36 11 30343 -48.3 287 32 816.7 37 10 30980 -42.1 290 35 862.4 38 8.7 31926 -40.5 903.7 39 7.5 32941 -38.7 950.1 40 6.8 33616 -37.5 982.1 TRP 233 10924 -53.5 -62.5 33 9.0 -53.7 270 46 333.2 333.2 292.6 333.3 0.04 WND 328 8656 -39.0 -48.6 36 9.6 -39.6 265 62 322.1 322.1 289.5 322.6 0.14 Sounding variables and indices 1000-500 mb thick: 5527.00 m Freezing level: 724.29 mb = 2805.03 m = 9202.74 ft Wetbulb zero: 751.18 mb = 2486.40 m = 8157.37 ft Precipitable water: 0.65 inches Sfc-500 mean rel hum: 74.89 % Est. max temperature: 16.82 C = 62.27 F Sfc-Lift cond lev (LCL): 864.97 mb = 1335.24 m = 4380.66 ft T: 9.58 C 700-500 lapse rate: 7.72 C/km ThetaE index: 4.24 C Layer 850.0- 697.0 mb Conv cond level (CCL): 771.34 mb = 2270.76 m = 7449.90 ft Mean mixing ratio: 6.42 g/kg Conv temperature: 16.12 C = 61.02 F Cap Strength: 1.60 C Lifted Index: -1.80 C Risk: Thunderstorms probable Lifted Index @300 mb: 7.32 C Lifted Index @700 mb: 0.57 C Showalter Index: -1.62 C Risk: Thunderstorms probable Total Totals Index: 56.80 C Risk: Severe Thunderstorms probable Vertical Totals Index: 30.50 C Cross Totals Index: 26.30 C K Index: 31.10 Risk: 60-80 % chance of thunderstorms Sweat Index: 238.20 Risk: None Energy Index: -1.05 Risk: Scattered severe thunderstorms Parcel Indices Parcel: using 100 mb layer CAPE (B+): 68.56 J/kg Max Up Vert Vel: 11.71 m/s Conv Inhibition (B-): 60.45 J/kg Cap Strength: 1.60 C Lift Cond Lev (LCL): 802.95 mb = 1943.71 m = 6376.93 ft Lev Free Conv (LFC): 647.95 mb = 3666.00 m = 12027.42 ft Equ Level (EL): 467.95 mb = 6136.43 m = 20132.41 ft B at Equ Level: 66.39 J/kg Max Parcel Lev (MPL): 407.95 mb = 7128.64 m = 23387.65 ft Wind level data Storm motion: 290 at 13 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 ---------------------------------------------------------- 0 901 997 160 1 -0.3 0.9 | 114 13 -12.1 5.3 1 850 1480 295 3 2.7 -1.3 | 109 10 -9.0 3.1 2 700 3061 250 9 8.5 3.1 | 156 8 -3.3 7.5 3 500 5650 260 21 20.7 3.6 | 228 12 9.0 8.0 4 400 7270 265 57 56.8 5.0 | 258 46 45.1 9.4 5 328 8656 265 62 61.8 5.4 | 259 51 50.0 9.8 6 300 9260 265 59 58.8 5.1 | 259 48 47.0 9.5 7 250 10470 265 47 46.8 4.1 | 256 36 35.1 8.5 8 233 10924 270 46 46.0 -0.0 | 263 35 34.3 4.4 9 200 11900 275 41 40.8 -3.6 | 268 29 29.1 0.8 10 150 13730 260 41 40.4 7.1 | 248 31 28.6 11.5 11 100 16290 275 39 38.9 -3.4 | 268 27 27.1 1.0 12 70 18530 255 19 18.4 4.9 | 215 11 6.6 9.3 13 50 20640 255 10 9.7 2.6 | 163 7 -2.1 7.0 14 30 23850 220 9 5.8 6.9 | 152 13 -5.9 11.3 15 20 26450 265 15 14.9 1.3 | 209 7 3.2 5.7 16 10 30980 290 35 32.9 -12.0 | 290 22 21.2 -7.6 Wind Parameters Mean winds (0-6000m): 260.5 at 16.7 knts Storm direction: 290.5 at 12.5 knts Shear (0-3000m) pos: 1.0 neg: 1.5 tot: 2.5 10-3/s Storm rel Dir Shear (0-3000m): 73.7 deg Storm rel helicity (0-3000m) pos: 25.1 neg: -4.5 tot: 20.6 m^2/s^2 ave: 6.9 10^-3 m/s^2 rel: 0.58 Storm rel vorticity (0-3000m) horiz: 2.9 stream: 1.7 10^-3/s Energy-Hel index: 0.01 Bulk Rich Number: 2.37 Bulk Shear: 28.92 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 ------------------------------------------------------------------------------- 500 279 2 113 11| 3.9 0.0 3.9| 3.9 -4.5 -0.7 -1.3 -0.11| 5.2 -0.6 1000 284 3 113 10| 2.0 1.1 3.1| 6.4 -4.5 1.9 1.9 0.08| 3.7 0.3 1500 275 4 117 9| 1.3 1.5 2.8| 10.6 -4.5 6.1 4.0 0.29| 3.3 1.0 2000 263 5 126 8| 1.0 1.8 2.7| 15.3 -4.5 10.8 5.4 0.43| 3.2 1.4 2500 259 6 133 8| 0.8 1.9 2.6| 20.2 -4.5 15.6 6.3 0.51| 3.0 1.6 3000 257 7 140 8| 1.0 1.5 2.5| 25.1 -4.5 20.6 6.9 0.58| 2.9 1.7 4000 257 9 157 7| 1.3 1.2 2.5| 35.5 -4.5 30.9 7.7 0.65| 2.8 1.8 5000 258 12 178 7| 2.2 0.9 3.1| 57.3 -4.5 52.7 10.5 0.62| 3.4 2.1 6000 260 17 214 9| 3.7 0.8 4.5|108.6 -4.5 104.0 17.3 0.49| 4.7 2.3 Wrote GIF file: /home/apache/climate/data/raob//LTBM/skewt/LTBM.skewt.20250427.00.gif