UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025122400.upa.cvt Date: 0000Z 24 DEC 25 Searching for VVNB... Searching the city database file for: VVNB ... Date:0000Z 24 DEC 25 Station: VVNB WMO ident: 48820 Latitude: 21.02 Longitude: 105.80 Elevation: 6.00 ------------------------------------------------------------------------------- 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 1013 6 22.0 19.7 87 2.3 20.4 100 1 294.1 296.6 293.1 335.2 14.40 1 1000 118 21.0 19.5 91 1.5 20.0 120 7 294.1 296.7 293.2 335.3 14.41 2 925 790 17.0 16.6 97 0.4 16.7 190 19 296.7 299.0 292.8 334.1 12.95 3 873 1283 14.2 14.1 99 0.1 14.1 211 16 298.7 300.9 292.4 332.7 11.66 4 860 1410 16.2 10.2 68 6.0 12.5 216 16 302.1 303.8 291.5 329.2 9.12 5 850 1510 15.4 10.4 72 5.0 12.3 220 15 302.3 304.0 291.7 330.0 9.36 6 818 1835 14.0 5.0 55 9.0 8.9 229 14 304.1 305.4 290.0 324.3 6.70 7 700 3122 2.0 2.0 100 0.0 2.0 265 11 304.7 305.9 289.9 323.8 6.33 8 689 3249 1.0 0.8 99 0.2 0.9 265 12 305.0 306.1 289.6 322.9 5.89 9 687 3272 2.6 -14.4 27 17.0 -3.7 265 12 307.0 307.3 286.4 312.9 1.82 10 686 3284 5.8 -17.2 17 23.0 -2.5 265 12 310.7 311.0 287.2 315.5 1.45 11 667 3515 11.0 -37.0 2 48.0 -1.9 266 14 319.0 319.1 288.7 319.9 0.24 12 585 4593 5.2 268 23 324.5 13 500 5850 -3.7 -48.7 2 45.0 -11.8 270 33 328.5 328.5 291.4 328.9 0.09 14 409 7401 -14.9 -44.9 6 30.0 -19.7 275 35 333.5 333.5 292.9 334.2 0.17 15 403 7513 -13.9 -36.9 12 23.0 -18.6 275 35 336.2 336.3 293.7 337.7 0.40 16 400 7570 -14.3 -37.3 12 23.0 -18.9 275 35 336.4 336.5 293.8 337.9 0.39 17 300 9680 -31.5 -50.5 14 19.0 -33.2 280 54 341.0 341.0 294.7 341.5 0.12 18 264 10569 -39.5 -54.5 19 15.0 -40.4 287 55 342.0 342.0 294.9 342.3 0.09 19 250 10940 -42.3 -57.3 18 15.0 -43.0 290 56 343.2 343.2 295.1 343.5 0.07 20 210 12103 -50.7 -64.7 17 14.0 -51.1 282 58 347.6 347.6 296.1 347.7 0.03 21 200 12420 -53.1 -68.1 15 15.0 -53.4 280 58 348.7 348.7 296.4 348.8 0.02 22 196 12549 -54.3 -69.3 14 15.0 -54.6 280 58 348.8 348.8 296.4 348.9 0.02 23 158 13887 -65.3 -75.4 23 10.2 -65.3 285 62 352.4 352.4 297.1 352.4 0.01 24 150 14200 -67.9 -76.9 27 9.0 -67.9 290 60 353.1 353.1 297.3 353.2 0.01 25 118 15618 -75.5 -85.5 19 10.0 -75.5 266 47 364.2 364.2 299.5 364.2 0.00 26 100 16570 -78.3 -88.3 18 10.0 -78.3 250 38 376.4 376.4 301.6 376.5 0.00 TRP WND 158 13887 -65.3 -75.4 23 10.2 -65.3 285 62 352.4 352.4 297.1 352.4 0.01 Sounding variables and indices 1000-500 mb thick: 5732.00 m Freezing level: 535.34 mb = 5327.50 m = 17478.47 ft Wetbulb zero: 688.61 mb = 3253.65 m = 10674.56 ft Precipitable water: 1.29 inches Sfc-500 mean rel hum: 78.48 % Est. max temperature: 29.28 C = 84.71 F Sfc-Lift cond lev (LCL): 979.71 mb = 294.68 m = 966.79 ft T: 19.95 C 700-500 lapse rate: 2.09 C/km ThetaE index: 17.18 C Layer 818.0- 686.0 mb Conv cond level (CCL): 936.57 mb = 682.84 m = 2240.25 ft Mean mixing ratio: 13.66 g/kg Conv temperature: 24.24 C = 75.62 F Cap Strength: 7.05 C Lifted Index: 5.36 C Risk: None Lifted Index @300 mb: 5.80 C Lifted Index @700 mb: -3.94 C Showalter Index: 7.53 C Risk: None Total Totals Index: 33.20 C Risk: None Vertical Totals Index: 19.10 C Cross Totals Index: 14.10 C K Index: 29.50 Risk: 40-60 % chance of thunderstorms Sweat Index: 308.56 Risk: Showers and thunderstorms possible Energy Index: -0.02 Risk: Scattered severe thunderstorms Parcel Indices Parcel: using 100 mb layer CAPE (B+): 97.99 J/kg Max Up Vert Vel: 14.00 m/s Conv Inhibition (B-): 1.84 J/kg Cap Strength: 7.01 C Lift Cond Lev (LCL): 948.48 mb = 573.94 m = 1882.97 ft Lev Free Conv (LFC): 913.48 mb = 896.74 m = 2942.04 ft Equ Level (EL): 863.48 mb = 1376.02 m = 4514.43 ft B at Equ Level: 10.82 J/kg Max Parcel Lev (MPL): 843.48 mb = 1575.17 m = 5167.81 ft Wind level data Storm motion: 281 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 1013 6 100 1 -1.0 0.2 | 101 14 -14.2 2.8 1 1000 118 120 7 -6.1 3.5 | 108 20 -19.3 6.1 2 925 790 190 19 3.3 18.7 | 155 24 -9.9 21.3 3 850 1510 220 15 9.6 11.5 | 166 15 -3.6 14.1 4 700 3122 265 11 11.0 1.0 | 148 4 -2.3 3.6 5 500 5850 270 33 33.0 -0.0 | 262 20 19.8 2.6 6 400 7570 275 35 34.9 -3.1 | 271 22 21.6 -0.4 7 300 9680 280 54 53.2 -9.4 | 280 41 39.9 -6.8 8 250 10940 290 56 52.6 -19.2 | 293 43 39.4 -16.5 9 200 12420 280 58 57.1 -10.1 | 280 45 43.9 -7.4 10 158 13887 285 62 59.9 -16.0 | 286 49 46.6 -13.4 11 150 14200 290 60 56.4 -20.5 | 293 47 43.1 -17.9 12 100 16570 250 38 35.7 13.0 | 235 27 22.5 15.6 Wind Parameters Mean winds (0-6000m): 251.2 at 18.0 knts Storm direction: 281.2 at 13.5 knts Shear (0-3000m) pos: 2.1 neg: 0.0 tot: 2.1 10-3/s Storm rel Dir Shear (0-3000m): 52.9 deg Storm rel helicity (0-3000m) pos: 148.3 neg: -2.6 tot: 145.8 m^2/s^2 ave: 48.6 10^-3 m/s^2 rel: 0.52 Storm rel vorticity (0-3000m) horiz: 7.9 stream: 4.1 10^-3/s Energy-Hel index: 0.09 Bulk Rich Number: 1.48 Bulk Shear: 66.16 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 ------------------------------------------------------------------------------- 500 144 9 118 21| 13.9 0.0 13.9| 64.5 0.0 64.5 129.0 0.70| 16.7 11.6 1000 178 13 139 21| 9.3 0.0 9.3|135.7 0.0 135.7 135.7 0.78| 15.0 11.7 1500 190 14 147 20| 5.3 0.0 5.3|145.7 0.0 145.7 97.2 0.69| 12.3 8.5 2000 200 14 152 18| 3.7 0.0 3.7|148.2 0.0 148.2 74.1 0.65| 10.2 6.6 2500 208 14 156 17| 2.8 0.0 2.8|148.3 -0.5 147.8 59.1 0.59| 8.8 5.2 3000 214 14 158 15| 2.1 0.0 2.1|148.3 -2.6 145.8 48.6 0.52| 7.9 4.1 4000 228 14 166 12| 2.5 0.0 2.5|155.2 -3.1 152.1 38.0 0.55| 6.9 3.8 5000 241 15 182 10| 2.8 0.0 2.8|163.8 -3.1 160.7 32.1 0.54| 6.4 3.4 6000 251 18 204 9| 2.9 0.0 2.9|173.8 -3.1 170.7 28.5 0.51| 5.9 3.0 Wrote GIF file: /home/apache/climate/data/raob//VVNB/skewt/VVNB.skewt.20251224.00.gif