UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025041712.upa.cvt Date: 1200Z 17 APR 25 Searching for VVNB... Searching the city database file for: VVNB ... Date:1200Z 17 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 1004 6 25.2 22.5 85 2.7 23.3 180 1 298.0 301.2 296.3 348.4 17.34 1 1000 39 25.0 22.6 87 2.4 23.3 175 1 298.1 301.3 296.4 349.1 17.52 2 941 571 21.0 21.0 100 0.0 21.0 195 10 299.3 302.4 296.3 348.5 16.87 3 925 721 23.2 21.3 89 1.9 21.8 200 13 303.0 306.3 297.7 354.9 17.50 4 918 788 24.6 20.4 77 4.2 21.6 201 13 305.1 308.2 297.7 354.9 16.66 5 895 1011 25.4 18.4 65 7.0 20.4 206 14 308.2 311.0 297.4 353.7 15.05 6 877 1190 25.2 16.2 57 9.0 18.9 209 14 309.8 312.3 296.7 350.3 13.33 7 850 1465 23.4 16.4 65 7.0 18.5 215 15 310.7 313.3 297.3 353.2 13.94 8 767 2354 17.0 13.1 78 3.9 14.4 241 22 313.0 315.4 297.0 351.4 12.45 9 700 3131 13.0 3.0 51 10.0 7.2 265 29 316.9 318.2 293.9 338.4 6.80 10 670 3498 10.6 -0.4 46 11.0 4.6 265 28 318.2 319.3 293.3 336.0 5.55 11 614 4219 5.2 -3.8 52 9.0 0.6 265 27 320.0 320.9 293.2 335.3 4.71 12 569 4839 2.8 -12.2 32 15.0 -3.6 265 25 324.2 324.8 292.6 333.1 2.63 13 500 5870 -5.9 -8.4 82 2.5 -7.0 265 23 325.8 326.7 294.1 339.4 4.06 14 495 5949 -6.5 -8.6 85 2.1 -7.5 265 23 326.1 326.9 294.2 339.5 4.04 15 480 6188 -8.3 -11.9 75 3.6 -9.8 264 25 326.7 327.3 293.7 337.5 3.20 16 477 6237 -8.5 -14.5 62 6.0 -10.8 264 25 327.1 327.6 293.3 335.9 2.61 17 469 6367 -9.5 -9.8 98 0.3 -9.6 264 26 327.4 328.2 294.4 340.4 3.88 18 465 6433 -9.1 -20.1 40 11.0 -12.8 263 26 328.7 329.0 292.9 334.5 1.67 19 463 6467 -9.3 -22.3 34 13.0 -13.3 263 26 328.9 329.1 292.7 333.7 1.38 20 421 7194 -14.3 -23.3 46 9.0 -16.9 261 31 331.5 331.8 293.4 336.5 1.39 21 412 7358 -15.7 -19.5 73 3.8 -16.9 261 32 331.8 332.2 294.0 338.7 1.98 22 401 7561 -16.5 -25.5 46 9.0 -18.9 260 33 333.3 333.5 293.7 337.6 1.20 23 400 7580 -16.5 -25.5 46 9.0 -18.9 260 33 333.5 333.8 293.8 337.9 1.20 24 381 7944 -19.1 -24.1 65 5.0 -20.5 259 37 334.8 335.1 294.3 339.9 1.43 25 376 8042 -19.1 -29.1 41 10.0 -21.4 259 38 336.1 336.2 294.2 339.5 0.92 26 363 8302 -21.3 -24.6 75 3.3 -22.2 258 41 336.5 336.8 294.7 341.7 1.44 27 359 8384 -20.9 -34.9 27 14.0 -23.6 258 42 338.1 338.2 294.4 340.2 0.55 28 351 8550 -21.9 -36.9 24 15.0 -24.6 258 43 339.0 339.1 294.5 340.7 0.46 29 338 8827 -23.5 -28.5 63 5.0 -24.6 257 46 340.5 340.7 295.4 344.5 1.08 30 326 9090 -24.1 -40.1 21 16.0 -26.6 256 49 343.2 343.2 295.4 344.6 0.36 31 319 9248 -25.3 -48.3 10 23.0 -28.0 256 51 343.6 343.7 295.3 344.3 0.15 32 300 9690 -29.3 -42.3 27 13.0 -31.0 255 56 344.1 344.1 295.6 345.3 0.31 33 286 10031 -32.3 -39.3 50 7.0 -33.3 254 57 344.5 344.6 295.8 346.3 0.44 34 275 10307 -34.1 -42.1 44 8.0 -35.0 253 58 345.8 345.9 296.0 347.2 0.34 35 274 10333 -34.1 -47.1 26 13.0 -35.4 253 58 346.2 346.2 296.0 347.0 0.20 36 261 10673 -37.1 -45.1 43 8.0 -37.9 251 59 346.6 346.7 296.1 347.7 0.26 37 250 10970 -39.3 -52.3 24 13.0 -40.2 250 60 347.6 347.7 296.2 348.1 0.12 38 231 11503 -43.9 -57.9 20 14.0 -44.6 253 62 348.6 348.6 296.4 348.9 0.07 39 216 11948 -47.6 -61.6 19 14.0 -48.1 255 64 349.6 349.6 296.6 349.8 0.04 40 214 12009 -48.1 -62.1 18 14.0 -48.6 256 64 349.8 349.8 296.6 350.0 0.04 41 200 12450 -51.5 -66.5 15 15.0 -51.8 260 62 351.2 351.2 296.9 351.3 0.02 42 173 13375 -59.1 -69.1 26 10.0 -59.2 260 47 353.5 353.5 297.4 353.6 0.02 43 167 13596 -60.5 -73.5 17 13.0 -60.6 260 44 354.8 354.8 297.7 354.8 0.01 44 163 13747 -60.7 -80.7 6 20.0 -60.9 260 41 356.9 356.9 298.1 356.9 0.00 45 150 14260 -64.1 -80.1 9 16.0 -64.2 260 33 359.7 359.7 298.7 359.7 0.00 46 110 16102 -76.5 -86.5 19 10.0 -76.5 287 24 369.7 369.7 300.5 369.7 0.00 47 100 16650 -76.9 -87.9 16 11.0 -76.9 295 21 379.1 379.1 302.1 379.2 0.00 TRP WND 216 11948 -47.6 -61.6 19 14.0 -48.1 255 64 349.6 349.6 296.6 349.8 0.04 Sounding variables and indices 1000-500 mb thick: 5831.00 m Freezing level: 546.79 mb = 5170.57 m = 16963.59 ft Wetbulb zero: 607.54 mb = 4304.95 m = 14123.68 ft Precipitable water: 2.12 inches Sfc-500 mean rel hum: 62.36 % Est. max temperature: 37.73 C = 99.91 F Sfc-Lift cond lev (LCL): 965.66 mb = 344.89 m = 1131.50 ft T: 22.70 C 700-500 lapse rate: 6.90 C/km ThetaE index: 20.12 C Layer 767.0- 500.0 mb Conv cond level (CCL): 944.57 mb = 538.20 m = 1765.72 ft Mean mixing ratio: 17.04 g/kg Conv temperature: 26.43 C = 79.58 F Cap Strength: 6.20 C Lifted Index: -3.17 C Risk: Severe thunderstorms possible Lifted Index @300 mb: -1.25 C Lifted Index @700 mb: 2.26 C Showalter Index: -4.07 C Risk: Severe thunderstorms possible Total Totals Index: 51.60 C Risk: Scattered heavy thunderstorms Vertical Totals Index: 29.30 C Cross Totals Index: 22.30 C K Index: 35.70 Risk: > 80 % chance of thunderstorms Sweat Index: 422.56 Risk: Severe Thunderstorms possible Energy Index: -2.68 Risk: Severe Thunderstorms probable Parcel Indices Parcel: using 100 mb layer CAPE (B+): 590.98 J/kg Max Up Vert Vel: 34.38 m/s Conv Inhibition (B-): 360.37 J/kg Cap Strength: 6.20 C Lift Cond Lev (LCL): 927.08 mb = 701.44 m = 2301.28 ft Lev Free Conv (LFC): 622.08 mb = 4110.87 m = 13486.95 ft Equ Level (EL): 572.08 mb = 4794.73 m = 15730.54 ft B at Equ Level: 40.98 J/kg Max Parcel Lev (MPL): 122.08 mb = 15483.24 m = 50797.43 ft Wind level data Storm motion: 284 at 16 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 1004 6 180 1 0.0 1.0 | 108 16 -15.4 4.9 1 1000 39 175 1 -0.1 1.0 | 108 16 -15.5 4.9 2 925 721 200 13 4.4 12.2 | 146 20 -11.0 16.1 3 850 1465 215 15 8.6 12.3 | 157 18 -6.8 16.2 4 700 3131 265 29 28.9 2.5 | 244 15 13.5 6.4 5 500 5870 265 23 22.9 2.0 | 232 10 7.5 5.9 6 400 7580 260 33 32.5 5.7 | 241 20 17.1 9.7 7 300 9690 255 56 54.1 14.5 | 245 43 38.7 18.4 8 250 10970 250 60 56.4 20.5 | 239 48 41.0 24.4 9 216 11948 255 64 61.8 16.6 | 246 51 46.4 20.5 10 200 12450 260 62 61.1 10.8 | 252 48 45.6 14.7 11 150 14260 260 33 32.5 5.7 | 241 20 17.1 9.7 12 100 16650 295 21 19.0 -8.9 | 324 6 3.6 -5.0 Wind Parameters Mean winds (0-6000m): 254.3 at 21.2 knts Storm direction: 284.3 at 15.9 knts Shear (0-3000m) pos: 4.8 neg: 0.0 tot: 4.8 10-3/s Storm rel Dir Shear (0-3000m): 128.5 deg Storm rel helicity (0-3000m) pos: 163.8 neg: 0.0 tot: 163.8 m^2/s^2 ave: 54.6 10^-3 m/s^2 rel: 0.97 Storm rel vorticity (0-3000m) horiz: 6.6 stream: 6.4 10^-3/s Energy-Hel index: 0.39 Bulk Rich Number: 11.65 Bulk Shear: 50.75 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 ------------------------------------------------------------------------------- 500 190 5 121 17| 8.5 0.0 8.5| 37.1 0.0 37.1 74.2 0.95| 8.6 8.2 1000 200 9 134 17| 6.6 0.0 6.6| 64.3 0.0 64.3 64.3 0.96| 7.2 6.9 1500 205 11 141 17| 5.0 0.0 5.0| 77.6 0.0 77.6 51.7 0.95| 5.9 5.5 2000 212 12 148 17| 4.9 0.0 4.9|104.6 0.0 104.6 52.3 0.95| 6.0 5.7 2500 221 14 157 16| 4.8 0.0 4.8|133.0 0.0 133.0 53.2 0.96| 6.2 6.0 3000 233 16 169 14| 4.8 0.0 4.8|163.8 0.0 163.8 54.6 0.97| 6.6 6.4 4000 245 19 189 12| 3.6 0.1 3.8|171.9 -2.4 169.4 42.4 0.91| 5.4 5.0 5000 251 21 201 11| 2.9 0.3 3.2|171.9 -5.5 166.4 33.3 0.85| 4.6 3.9 6000 254 21 207 11| 2.4 0.4 2.8|172.4 -7.9 164.5 27.4 0.79| 4.0 3.2 Wrote GIF file: /home/apache/climate/data/raob//VVNB/skewt/VVNB.skewt.20250417.12.gif