UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025122023.upa.cvt Date: 2300Z 20 DEC 25 Searching for DTTA... Searching the city database file for: DTTA ... Date:2300Z 20 DEC 25 Station: DTTA WMO ident: 60715 Latitude: 36.83 Longitude: 10.23 Elevation: 4.00 ------------------------------------------------------------------------------- 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 ------------------------------------------------------------------------------- SFC 1011 4 13.8 13.8 100 0.0 13.8 230 3 286.1 287.8 286.5 313.3 9.85 1 1000 100 13.6 11.3 86 2.3 12.3 235 7 286.8 288.2 285.4 310.3 8.43 2 995 142 13.6 11.5 87 2.1 12.4 226 7 287.2 288.7 285.7 311.1 8.59 3 975 313 12.8 11.0 89 1.8 11.7 190 8 288.0 289.5 285.9 311.8 8.48 4 925 754 10.0 7.6 85 2.4 8.7 95 9 289.5 290.8 285.2 309.6 7.09 5 850 1453 6.2 4.2 87 2.0 5.2 110 8 292.6 293.7 285.4 310.2 6.09 6 813 1816 4.0 2.7 91 1.3 3.4 117 8 294.1 295.1 285.5 310.7 5.72 7 750 2467 0.0 -1.3 91 1.3 -0.6 129 9 296.6 297.4 285.4 310.3 4.64 8 700 3017 -2.9 -3.9 93 1.0 -3.3 140 10 299.3 300.0 285.9 311.6 4.09 9 669 3374 -4.9 -6.5 89 1.6 -5.5 141 10 300.9 301.6 285.9 311.6 3.51 10 620 3967 -9.3 -11.4 85 2.1 -10.1 144 10 302.5 303.0 285.5 310.5 2.58 11 614 4042 -10.1 -14.5 70 4.4 -11.5 144 10 302.4 302.8 284.8 308.8 2.02 12 608 4117 -9.7 -12.1 83 2.4 -10.5 144 10 303.7 304.2 285.9 311.5 2.48 13 600 4219 -10.1 -12.4 83 2.3 -10.9 145 10 304.4 304.9 286.1 312.1 2.46 14 503 5555 -18.7 -23.5 66 4.8 -19.8 150 11 309.7 309.9 286.6 313.5 1.14 15 500 5600 -19.3 -24.3 65 5.0 -20.4 150 11 309.5 309.7 286.4 313.1 1.07 16 490 5750 -20.3 -27.3 54 7.0 -21.7 151 11 310.1 310.2 286.4 312.9 0.83 17 426 6771 -27.9 -35.9 46 8.0 -28.9 157 12 313.0 313.1 286.9 314.5 0.42 18 400 7220 -30.9 -34.4 71 3.5 -31.3 160 13 314.8 314.9 287.6 316.7 0.52 19 382 7546 -33.5 -36.5 74 3.0 -33.8 157 16 315.6 315.7 287.8 317.1 0.44 20 300 9200 -47.3 -50.4 70 3.1 -47.4 140 31 318.7 318.7 288.5 319.2 0.13 21 295 9310 -48.3 -51.4 70 3.1 -48.4 141 31 318.8 318.8 288.5 319.2 0.11 22 250 10370 -57.1 -60.3 67 3.2 -57.2 155 31 321.2 321.2 289.2 321.4 0.05 23 248 10421 -57.3 -60.6 66 3.3 -57.3 155 31 321.6 321.6 289.3 321.8 0.04 24 211 11440 -57.3 -64.3 41 7.0 -57.4 230 26 336.8 336.8 293.6 337.0 0.03 25 200 11780 -54.5 -62.5 37 8.0 -54.7 255 25 346.5 346.5 295.9 346.6 0.04 26 191 12075 -53.9 -62.9 32 9.0 -54.1 259 28 352.0 352.0 297.1 352.2 0.04 27 158 13289 -55.3 -69.3 16 14.0 -55.6 275 38 369.3 369.3 300.5 369.4 0.02 28 150 13620 -55.9 -70.9 14 15.0 -56.2 280 41 373.8 373.8 301.2 373.8 0.02 29 148 13705 -55.9 -70.9 14 15.0 -56.2 280 41 375.2 375.2 301.5 375.3 0.02 30 131 14480 -55.7 -73.7 9 18.0 -56.1 283 37 388.9 388.9 303.6 388.9 0.01 31 126 14727 -56.5 -74.5 9 18.0 -56.8 284 36 391.8 391.8 304.0 391.8 0.01 32 112 15470 -58.3 -79.3 5 21.0 -58.6 287 32 401.8 401.8 305.5 401.9 0.01 33 106 15816 -58.5 -80.5 4 22.0 -58.8 289 31 407.8 407.8 306.2 407.9 0.01 34 101 16118 -60.1 -82.1 4 22.0 -60.4 290 29 410.4 410.4 306.6 410.5 0.00 35 100 16180 -60.5 -82.5 4 22.0 -60.8 290 29 410.8 410.8 306.6 410.9 0.00 TRP 248 10421 -57.3 -60.6 66 3.3 -57.3 155 31 321.6 321.6 289.3 321.8 0.04 WND Sounding variables and indices 1000-500 mb thick: 5500.00 m Freezing level: 750.00 mb = 2467.21 m = 8094.44 ft Wetbulb zero: 759.88 mb = 2361.61 m = 7747.96 ft Precipitable water: 1.02 inches Sfc-500 mean rel hum: 84.59 % Est. max temperature: 19.94 C = 67.88 F Sfc-Lift cond lev (LCL): 1011.00 mb = 4.00 m = 13.12 ft T: 13.80 C 700-500 lapse rate: 6.35 C/km ThetaE index: 3.06 C Layer 1000.0- 995.0 mb Conv cond level (CCL): 905.08 mb = 933.99 m = 3064.22 ft Mean mixing ratio: 7.99 g/kg Conv temperature: 18.09 C = 64.57 F Cap Strength: 2.73 C Lifted Index: 2.48 C Risk: None Lifted Index @300 mb: 5.82 C Lifted Index @700 mb: 0.83 C Showalter Index: 2.89 C Risk: Showers probable Total Totals Index: 49.00 C Risk: Scattered heavy thunderstorms Vertical Totals Index: 25.50 C Cross Totals Index: 23.50 C K Index: 28.70 Risk: 40-60 % chance of thunderstorms Sweat Index: 77.40 Risk: None Energy Index: 0.55 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 12.97 J/kg Max Up Vert Vel: 5.09 m/s Conv Inhibition (B-): 9505.43 J/kg Cap Strength: 2.64 C Lift Cond Lev (LCL): 931.97 mb = 691.16 m = 2267.57 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 167 at 7 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 1011 4 230 3 2.3 1.9 | 323 6 3.9 -5.1 1 1000 100 235 7 5.7 4.0 | 292 8 7.3 -3.0 2 925 754 95 9 -9.0 0.8 | 50 10 -7.4 -6.2 3 850 1453 110 8 -7.5 2.7 | 54 7 -5.9 -4.3 4 700 3017 140 10 -6.4 7.7 | 97 5 -4.8 0.6 5 500 5600 150 11 -5.5 9.5 | 123 5 -3.9 2.5 6 400 7220 160 13 -4.4 12.2 | 151 6 -2.9 5.2 7 300 9200 140 31 -19.9 23.7 | 132 25 -18.3 16.7 8 250 10370 155 31 -13.1 28.1 | 151 24 -11.5 21.1 9 248 10421 155 31 -13.1 28.1 | 151 24 -11.5 21.1 10 200 11780 255 25 24.1 6.5 | 271 26 25.7 -0.6 11 150 13620 280 41 40.4 -7.1 | 289 44 42.0 -14.1 12 100 16180 290 29 27.3 -9.9 | 300 33 28.8 -16.9 Wind Parameters Mean winds (0-6000m): 137.2 at 9.6 knts Storm direction: 167.2 at 7.2 knts Shear (0-3000m) pos: 1.1 neg: 1.9 tot: 3.0 10-3/s Storm rel Dir Shear (0-3000m): 134.3 deg Storm rel helicity (0-3000m) pos: 8.4 neg: -18.5 tot: -10.0 m^2/s^2 ave: -3.3 10^-3 m/s^2 rel: -0.35 Storm rel vorticity (0-3000m) horiz: 5.5 stream: -1.9 10^-3/s Energy-Hel index: 0.00 Bulk Rich Number: 1.41 Bulk Shear: 9.22 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 ------------------------------------------------------------------------------- 500 195 7 272 3| 0.0 8.6 8.6| 0.0 -12.0 -12.0 -23.9 -0.73| 17.1-12.5 1000 127 8 64 5| 0.0 5.6 5.6| 0.6 -18.5 -17.9 -17.9 -0.63| 13.0 -8.2 1500 115 8 58 7| 0.6 3.7 4.3| 1.6 -18.5 -16.9 -11.3 -0.58| 9.2 -5.3 2000 115 8 58 7| 0.8 2.8 3.6| 4.0 -18.5 -14.5 -7.3 -0.50| 7.3 -3.7 2500 118 8 62 6| 1.0 2.2 3.2| 6.3 -18.5 -12.2 -4.9 -0.42| 6.2 -2.6 3000 123 9 67 6| 1.1 1.9 3.0| 8.4 -18.5 -10.0 -3.3 -0.35| 5.5 -1.9 4000 129 9 75 6| 0.9 1.4 2.3| 9.5 -18.5 -9.0 -2.3 -0.32| 4.2 -1.3 5000 133 9 83 5| 0.8 1.1 1.9| 10.5 -18.5 -8.0 -1.6 -0.29| 3.4 -1.0 6000 137 10 90 5| 0.8 0.9 1.7| 11.9 -18.5 -6.6 -1.1 -0.24| 3.0 -0.7 Wrote GIF file: /home/apache/climate/data/raob//DTTA/skewt/DTTA.skewt.20251220.23.gif