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 U4688... Searching the city database file for: U4688 ... Date:1200Z 17 APR 25 Station: U4688 WMO ident: 24688 Latitude: 63.27 Longitude: 143.15 ------------------------------------------------------------------------------- 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 73 1 925 685 300 1 SFC 918 744 -7.9 -13.9 62 6.0 -9.5 300 1 271.8 272.1 268.5 275.8 1.42 3 882 1057 -3.7 -10.7 58 7.0 -5.9 305 5 279.3 279.6 273.9 284.8 1.91 4 850 1347 -6.5 -14.5 53 8.0 -8.7 310 9 279.3 279.6 273.2 283.6 1.46 5 780 2012 -12.3 -18.3 61 6.0 -13.7 272 6 280.1 280.3 273.2 283.5 1.16 6 728 2536 -15.7 -22.7 55 7.0 -17.0 242 4 281.9 282.1 273.7 284.5 0.85 7 700 2831 -17.5 -21.7 70 4.2 -18.3 225 3 283.1 283.3 274.6 286.0 0.96 8 655 3328 -21.5 -23.8 82 2.3 -21.9 231 9 284.0 284.2 274.9 286.6 0.85 9 645 3442 -21.3 -23.4 83 2.1 -21.7 232 11 285.5 285.7 275.7 288.2 0.90 10 505 5229 -29.1 -31.5 80 2.4 -29.4 254 34 296.7 296.8 280.7 298.5 0.54 11 500 5300 -29.3 -31.9 78 2.6 -29.6 255 35 297.3 297.4 280.9 299.1 0.53 12 400 6850 -41.5 -48.5 47 7.0 -41.8 250 52 301.1 301.1 282.0 301.5 0.12 13 382 7161 -43.7 -51.7 41 8.0 -44.0 252 58 302.1 302.2 282.4 302.5 0.08 14 347 7802 -46.6 -55.2 37 8.7 -46.9 255 71 306.7 306.7 284.1 306.9 0.06 15 330 8135 -48.1 -57.1 35 9.0 -48.3 255 69 309.0 309.0 285.0 309.2 0.05 16 300 8760 -50.1 -60.1 30 10.0 -50.3 255 64 314.7 314.7 287.1 314.9 0.04 17 274 9351 -51.9 -61.9 29 10.0 -52.1 255 58 320.4 320.4 288.9 320.5 0.03 18 250 9950 -49.7 -60.7 26 11.0 -50.0 255 40 332.2 332.2 292.3 332.4 0.04 19 200 11410 -47.3 -60.3 21 13.0 -47.8 250 33 357.9 357.9 298.3 358.1 0.06 20 150 13310 -49.1 -63.1 18 14.0 -49.7 255 25 385.5 385.5 303.2 385.7 0.05 21 100 15960 -51.7 -67.7 13 16.0 -52.4 260 15 427.8 427.8 308.6 428.1 0.04 22 70 18270 -53.1 -69.1 13 16.0 -53.9 270 13 470.8 470.8 312.7 471.1 0.05 23 63 18947 -53.5 -69.5 13 16.0 -54.4 268 12 484.3 484.3 313.8 484.6 0.05 24 58 19475 -55.7 -72.7 10 17.0 -56.5 267 12 490.9 490.9 314.3 491.1 0.04 25 57 19586 -55.7 -72.7 10 17.0 -56.5 267 12 493.4 493.4 314.5 493.6 0.04 26 50 20420 -55.3 -71.3 12 16.0 -56.2 265 11 513.2 513.2 315.9 513.5 0.05 27 46 20950 -55.3 -71.3 12 16.0 -56.2 269 10 525.5 525.6 316.6 525.9 0.06 28 36 22509 -55.3 -71.3 12 16.0 -56.5 281 7 563.7 563.7 318.9 564.2 0.07 29 30 23670 -55.3 -72.3 10 17.0 -56.7 290 5 593.9 593.9 320.3 594.4 0.07 30 20 26260 -55.5 -72.5 10 17.0 -57.4 280 17 666.3 666.3 323.3 667.2 0.11 31 16 27702 -49.7 -67.7 10 18.0 -53.4 294 13 729.1 729.2 325.4 731.5 0.26 32 10 30780 -49.7 -65.7 14 16.0 -54.5 325 5 834.0 834.3 328.2 839.8 0.56 33 7.4 32763 -46.9 -65.9 10 19.0 -53.9 920.4 920.8 329.9 928.9 0.73 TRP 274 9351 -51.9 -61.9 29 10.0 -52.1 255 58 320.4 320.4 288.9 320.5 0.03 WND 347 7802 -46.6 -55.2 37 8.7 -46.9 255 71 306.7 306.7 284.1 306.9 0.06 Sounding variables and indices 1000-500 mb thick: 5227.00 m Freezing level: Surface below freezing Wetbulb zero: Below ground Precipitable water: 0.20 inches Sfc-500 mean rel hum: 70.42 % Est. max temperature: 0.55 C = 32.99 F Sfc-Lift cond lev (LCL): 834.01 mb = 1493.85 m = 4901.03 ft T: -7.78 C 700-500 lapse rate: 4.78 C/km ThetaE index: 1.31 C Layer 850.0- 728.0 mb Conv cond level (CCL): 733.28 mb = 2481.04 m = 8139.81 ft Mean mixing ratio: 1.58 g/kg Conv temperature: 1.77 C = 35.18 F Cap Strength: 12.13 C Lifted Index: 12.57 C Risk: None Lifted Index @300 mb: 22.77 C Lifted Index @700 mb: 3.22 C Showalter Index: 11.81 C Risk: None Total Totals Index: 37.60 C Risk: None Vertical Totals Index: 22.80 C Cross Totals Index: 14.80 C K Index: 4.10 Risk: None Sweat Index: 53.00 Risk: None Energy Index: 3.19 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 28.26 J/kg Max Up Vert Vel: 7.52 m/s Conv Inhibition (B-): 67023.06 J/kg Cap Strength: 12.22 C Lift Cond Lev (LCL): 774.23 mb = 2068.14 m = 6785.17 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 286 at 15 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 ---------------------------------------------------------- 0 918 744 300 1 0.9 -0.5 | 105 15 -14.0 3.7 1 850 1347 310 9 6.9 -5.8 | 79 8 -8.0 -1.6 2 700 2831 225 3 2.1 2.1 | 116 14 -12.8 6.3 3 500 5300 255 35 33.8 9.1 | 235 23 18.9 13.3 4 400 6850 250 52 48.9 17.8 | 237 40 34.0 22.0 5 347 7802 255 71 68.6 18.4 | 247 58 53.7 22.6 6 300 8760 255 64 61.8 16.6 | 246 51 46.9 20.8 7 274 9351 255 58 56.0 15.0 | 245 45 41.1 19.2 8 250 9950 255 40 38.6 10.4 | 239 28 23.7 14.5 9 200 11410 250 33 31.0 11.3 | 226 22 16.1 15.5 10 150 13310 255 25 24.1 6.5 | 221 14 9.3 10.7 11 100 15960 260 15 14.8 2.6 | 179 7 -0.1 6.8 12 70 18270 270 13 13.0 -0.0 | 156 5 -1.9 4.2 13 50 20420 265 11 11.0 1.0 | 143 6 -3.9 5.2 14 30 23670 290 5 4.7 -1.7 | 104 10 -10.2 2.5 15 20 26260 280 17 16.7 -3.0 | 236 2 1.8 1.2 16 10 30780 325 5 2.9 -4.1 | 90 12 -12.0 0.1 Wind Parameters Mean winds (0-6000m): 255.7 at 20.6 knts Storm direction: 285.7 at 15.5 knts Shear (0-3000m) pos: 2.6 neg: 1.3 tot: 3.9 10-3/s Storm rel Dir Shear (0-3000m): 63.5 deg Storm rel helicity (0-3000m) pos: 52.6 neg: -14.5 tot: 38.0 m^2/s^2 ave: 12.7 10^-3 m/s^2 rel: 0.40 Storm rel vorticity (0-3000m) horiz: 5.2 stream: 2.1 10^-3/s Energy-Hel index: 0.00 Bulk Rich Number: 0.63 Bulk Shear: 44.74 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 ------------------------------------------------------------------------------- 500 309 4 97 12| 6.8 0.0 6.8| 0.0 -10.2 -10.2 -20.3 -0.52| 6.9 -3.6 1000 304 6 94 10| 3.4 1.4 4.8| 7.2 -12.7 -5.5 -5.5 -0.10| 6.0 -0.6 1500 297 6 98 9| 2.3 2.0 4.3| 12.6 -12.7 -0.1 -0.0 0.07| 5.3 0.4 2000 296 6 99 10| 1.7 2.0 3.7| 12.9 -14.2 -1.3 -0.6 0.04| 4.7 0.2 2500 287 6 105 10| 1.9 1.6 3.4| 30.7 -14.5 16.2 6.5 0.24| 4.9 1.2 3000 270 7 117 9| 2.6 1.3 3.9| 52.6 -14.5 38.0 12.7 0.40| 5.2 2.1 4000 258 10 143 8| 3.7 1.0 4.7|101.8 -14.5 87.3 21.8 0.56| 5.7 3.2 5000 259 15 180 7| 3.7 0.9 4.6|141.1 -14.5 126.6 25.3 0.56| 5.9 3.3 6000 256 21 209 11| 3.1 1.6 4.7|144.3 -14.9 129.4 21.6 0.47| 5.9 2.8 Wrote GIF file: /home/apache/climate/data/raob//U4688/skewt/U4688.skewt.20250417.12.gif