UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025041912.upa.cvt Date: 1200Z 19 APR 25 Searching for VVNB... Searching the city database file for: VVNB ... Date:1200Z 19 APR 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 1003 6 29.6 24.8 75 4.8 26.0 125 3 302.5 306.2 299.1 361.9 20.02 1 1000 36 29.4 24.9 77 4.5 26.0 130 5 302.5 306.3 299.2 362.5 20.21 2 952 474 25.6 23.6 89 2.0 24.2 158 14 303.0 306.6 299.0 361.3 19.61 3 933 653 27.2 20.2 66 7.0 22.2 170 17 306.4 309.4 297.7 355.0 16.18 4 925 729 26.6 19.6 65 7.0 21.6 175 19 306.5 309.4 297.4 353.7 15.71 5 910 873 25.2 21.1 78 4.1 22.2 182 17 306.5 309.8 298.6 359.4 17.57 6 875 1219 25.0 16.0 57 9.0 18.8 198 11 309.8 312.2 296.6 349.9 13.18 7 850 1473 23.4 14.4 57 9.0 17.2 210 7 310.7 313.0 296.2 348.0 12.23 8 839 1587 22.8 13.8 57 9.0 16.7 212 8 311.2 313.4 296.1 347.7 11.91 9 700 3135 11.4 6.7 73 4.7 8.5 245 17 315.1 316.8 295.0 342.7 8.83 10 632 3981 5.4 2.6 82 2.8 3.8 245 19 317.6 319.0 294.5 340.8 7.33 11 534 5339 -2.9 -3.7 94 0.8 -3.3 245 23 323.4 324.4 294.6 341.2 5.46 12 511 5688 -3.9 -6.9 80 3.0 -5.3 245 24 326.2 327.1 294.6 341.1 4.47 13 503 5813 -2.9 -12.9 46 10.0 -7.1 245 25 328.9 329.5 294.0 338.6 2.82 14 500 5860 -3.1 -15.1 39 12.0 -7.9 245 25 329.3 329.7 293.7 337.4 2.37 15 494 5956 -3.7 -17.7 33 14.0 -8.9 245 26 329.7 330.1 293.4 336.4 1.93 16 459 6534 -8.5 -19.5 41 11.0 -12.3 245 29 330.7 331.0 293.6 336.9 1.78 17 447 6739 -10.1 -11.4 90 1.3 -10.6 245 30 331.2 331.9 295.1 343.4 3.58 18 410 7402 -14.5 -14.8 98 0.3 -14.6 245 34 333.8 334.4 295.3 344.1 2.96 19 403 7533 -15.1 -16.7 88 1.6 -15.7 245 35 334.6 335.2 295.2 343.7 2.57 20 400 7590 -14.7 -18.3 74 3.6 -16.0 245 35 335.9 336.3 295.3 343.9 2.26 21 397 7647 -14.3 -21.3 55 7.0 -16.6 245 35 337.1 337.5 295.1 343.5 1.76 22 364 8300 -19.5 -22.7 76 3.2 -20.4 250 39 338.7 339.0 295.4 344.8 1.70 23 356 8465 -20.3 -35.3 25 15.0 -23.2 251 40 339.7 339.9 294.7 341.8 0.53 24 343 8739 -22.7 -27.4 65 4.7 -23.8 253 42 340.1 340.4 295.4 344.5 1.18 25 332 8978 -24.9 -29.1 68 4.2 -25.8 255 43 340.3 340.5 295.3 344.2 1.04 26 330 9022 -25.3 -29.8 66 4.5 -26.3 255 44 340.3 340.5 295.3 344.0 0.98 27 329 9044 -25.7 -28.2 79 2.5 -26.3 255 44 340.1 340.3 295.3 344.3 1.14 28 327 9088 -25.7 -26.0 97 0.3 -25.8 256 44 340.7 341.0 295.7 345.8 1.40 29 324 9155 -25.7 -25.8 99 0.1 -25.7 256 45 341.6 341.9 296.0 346.9 1.44 30 314 9382 -26.7 -28.1 88 1.4 -27.0 258 46 343.2 343.5 296.1 347.8 1.21 31 312 9428 -27.5 -38.5 34 11.0 -29.2 258 46 342.8 342.9 295.4 344.5 0.44 32 300 9710 -28.5 -60.5 3 32.0 -31.0 260 48 345.2 345.2 295.6 345.4 0.04 33 299 9734 -28.7 -60.7 3 32.0 -31.2 260 48 345.3 345.3 295.6 345.4 0.04 34 278 10247 -33.3 -57.3 7 24.0 -35.0 260 49 345.9 345.9 295.8 346.1 0.06 35 273 10373 -34.5 -49.5 20 15.0 -35.8 260 49 346.0 346.0 295.8 346.6 0.15 36 270 10450 -35.1 -45.1 35 10.0 -36.1 260 49 346.2 346.2 296.0 347.2 0.25 37 268 10502 -35.3 -62.3 5 27.0 -36.8 260 49 346.6 346.6 295.9 346.8 0.03 38 262 10658 -36.3 -66.3 3 30.0 -37.8 260 49 347.4 347.4 296.1 347.5 0.02 39 250 10980 -38.5 -66.5 4 28.0 -39.7 260 50 348.8 348.8 296.4 348.9 0.02 40 249 11008 -38.9 -53.9 19 15.0 -39.9 260 50 348.6 348.7 296.4 349.1 0.10 41 246 11091 -38.9 -70.9 2 32.0 -40.1 260 50 349.8 349.8 296.6 349.9 0.01 42 239 11289 -40.7 -63.7 7 23.0 -41.7 260 50 350.0 350.0 296.7 350.2 0.03 43 238 11317 -40.9 -46.9 52 6.0 -41.4 260 50 350.2 350.2 296.9 351.1 0.24 44 236 11375 -41.3 -45.8 62 4.5 -41.7 260 49 350.4 350.4 297.0 351.5 0.27 45 221 11818 -44.9 -48.2 69 3.3 -45.1 260 49 351.5 351.5 297.1 352.4 0.22 46 218 11910 -45.5 -49.5 64 4.0 -45.7 260 49 351.9 352.0 297.2 352.7 0.19 47 214 12033 -46.1 -59.1 22 13.0 -46.6 260 49 352.9 352.9 297.3 353.1 0.06 48 204 12350 -48.9 -72.9 4 24.0 -49.4 260 48 353.3 353.3 297.4 353.4 0.01 49 200 12480 -50.3 -70.3 8 20.0 -50.7 260 48 353.1 353.1 297.3 353.2 0.01 50 178 13228 -57.1 -72.1 13 15.0 -57.3 260 40 353.9 353.9 297.5 354.0 0.01 51 158 13972 -62.5 -74.5 18 12.0 -62.6 260 32 357.1 357.1 298.1 357.1 0.01 52 150 14290 -65.3 -71.3 43 6.0 -65.4 260 29 357.6 357.6 298.2 357.7 0.02 53 140 14707 -67.9 -76.9 27 9.0 -67.9 259 27 360.2 360.2 298.7 360.2 0.01 54 124 15429 -72.3 -82.3 21 10.0 -72.3 258 23 364.9 364.9 299.7 364.9 0.00 55 100 16670 -79.9 -85.9 36 6.0 -79.9 255 17 373.4 373.4 301.1 373.4 0.00 TRP WND Sounding variables and indices 1000-500 mb thick: 5824.00 m Freezing level: 568.24 mb = 4864.18 m = 15958.41 ft Wetbulb zero: 579.89 mb = 4674.14 m = 15334.93 ft Precipitable water: 2.32 inches Sfc-500 mean rel hum: 75.03 % Est. max temperature: 37.67 C = 99.80 F Sfc-Lift cond lev (LCL): 936.09 mb = 623.21 m = 2044.64 ft T: 26.94 C 700-500 lapse rate: 5.32 C/km ThetaE index: 18.53 C Layer 875.0- 534.0 mb Conv cond level (CCL): 800.58 mb = 1987.32 m = 6520.00 ft Mean mixing ratio: 18.49 g/kg Conv temperature: 39.36 C = 102.85 F Cap Strength: 4.09 C Lifted Index: -3.35 C Risk: Severe thunderstorms possible Lifted Index @300 mb: -5.02 C Lifted Index @700 mb: -1.63 C Showalter Index: 0.57 C Risk: Thunderstorms probable Total Totals Index: 44.00 C Risk: Scattered moderate thunderstorms Vertical Totals Index: 26.50 C Cross Totals Index: 17.50 C K Index: 36.20 Risk: > 80 % chance of thunderstorms Sweat Index: 211.80 Risk: None Energy Index: -2.04 Risk: Severe Thunderstorms probable Parcel Indices Parcel: using 100 mb layer CAPE (B+): 1986.90 J/kg Max Up Vert Vel: 63.04 m/s Conv Inhibition (B-): 157.36 J/kg Cap Strength: 4.07 C Lift Cond Lev (LCL): 895.55 mb = 1014.28 m = 3327.66 ft Lev Free Conv (LFC): 740.55 mb = 2653.66 m = 8706.13 ft Equ Level (EL): 140.55 mb = 14683.63 m = 48174.04 ft B at Equ Level: 1979.93 J/kg Wind level data Storm motion: 263 at 12 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 1003 6 125 3 -2.5 1.7 | 91 15 -14.9 0.2 1 1000 36 130 5 -3.8 3.2 | 96 16 -16.2 1.7 2 925 729 175 19 -1.7 18.9 | 141 22 -14.1 17.4 3 850 1473 210 7 3.5 6.1 | 117 10 -8.9 4.6 4 700 3135 245 17 15.4 7.2 | 208 6 3.0 5.7 5 500 5860 245 25 22.7 10.6 | 229 14 10.3 9.1 6 400 7590 245 35 31.7 14.8 | 235 23 19.3 13.3 7 300 9710 260 48 47.3 8.3 | 259 36 34.9 6.8 8 250 10980 260 50 49.2 8.7 | 259 38 36.8 7.2 9 200 12480 260 48 47.3 8.3 | 259 36 34.9 6.8 10 150 14290 260 29 28.6 5.0 | 258 17 16.2 3.5 11 100 16670 255 17 16.4 4.4 | 234 5 4.0 2.9 Wind Parameters Mean winds (0-6000m): 233.1 at 16.7 knts Storm direction: 263.1 at 12.5 knts Shear (0-3000m) pos: 3.1 neg: 0.0 tot: 3.1 10-3/s Storm rel Dir Shear (0-3000m): 107.2 deg Storm rel helicity (0-3000m) pos: 111.8 neg: -16.2 tot: 95.5 m^2/s^2 ave: 31.8 10^-3 m/s^2 rel: 0.52 Storm rel vorticity (0-3000m) horiz: 7.5 stream: 3.9 10^-3/s Energy-Hel index: 1.22 Bulk Rich Number: 47.52 Bulk Shear: 41.81 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 ------------------------------------------------------------------------------- 500 152 9 112 18| 12.5 0.0 12.5| 54.5 0.0 54.5 109.1 0.86| 13.3 11.4 1000 171 13 128 18| 6.9 0.0 6.9| 90.6 -1.0 89.6 89.6 0.70| 12.5 8.8 1500 176 12 129 17| 2.6 0.0 2.6| 90.6 -16.2 74.4 49.6 0.38| 11.3 4.3 2000 184 11 130 15| 2.8 0.0 2.8| 98.0 -16.2 81.8 40.9 0.43| 9.3 4.0 2500 193 11 135 14| 3.0 0.0 3.0|104.9 -16.2 88.6 35.5 0.47| 8.2 3.9 3000 205 12 142 12| 3.1 0.0 3.1|111.8 -16.2 95.5 31.8 0.52| 7.5 3.9 4000 220 13 157 10| 2.5 0.2 2.7|116.2 -16.2 100.0 25.0 0.53| 6.1 3.3 5000 228 15 172 9| 2.0 0.5 2.5|119.2 -16.2 103.0 20.6 0.52| 5.2 2.7 6000 233 17 186 9| 1.7 0.7 2.4|122.7 -16.2 106.5 17.7 0.51| 4.6 2.4 Wrote GIF file: /home/apache/climate/data/raob//VVNB/skewt/VVNB.skewt.20250419.12.gif