UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025042112.upa.cvt Date: 1200Z 21 APR 25 Searching for U4688... Searching the city database file for: U4688 ... Date:1200Z 21 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 141 SFC 928 743 -1.1 -8.1 59 7.0 -3.5 230 1 277.9 278.3 273.6 284.2 2.23 2 925 769 -0.3 -8.3 55 8.0 -3.1 215 3 279.0 279.4 274.2 285.3 2.21 3 894 1044 5.4 -10.6 30 16.0 -0.4 205 9 287.6 288.0 278.3 293.3 1.90 4 882 1154 4.4 -12.6 28 17.0 -1.4 201 12 287.7 288.0 277.9 292.6 1.64 5 850 1453 1.6 -14.4 29 16.0 -3.5 190 19 287.8 288.1 277.8 292.2 1.47 6 821 1730 -0.3 -15.3 31 15.0 -5.0 201 18 288.7 288.9 278.1 293.0 1.41 7 792 2017 0.0 -18.0 24 18.0 -5.3 212 17 292.0 292.2 279.4 295.6 1.17 8 700 2989 -6.7 -29.7 14 23.0 -11.4 250 13 295.1 295.1 279.8 296.6 0.46 9 500 5510 -26.5 -46.5 13 20.0 -28.2 260 9 300.7 300.8 281.8 301.1 0.12 10 482 5774 -28.7 -48.7 13 20.0 -30.2 249 8 301.2 301.2 282.0 301.5 0.10 11 427 6635 -33.3 -41.3 45 8.0 -34.0 214 6 305.9 306.0 284.1 306.8 0.24 12 418 6785 -35.5 -43.5 44 8.0 -36.1 208 6 305.0 305.0 283.7 305.7 0.19 13 400 7090 -37.9 -43.9 53 6.0 -38.3 195 5 305.7 305.8 284.0 306.4 0.19 14 300 9010 -53.3 -58.1 56 4.8 -53.4 185 5 310.2 310.2 285.5 310.4 0.05 15 289 9249 -55.5 -60.2 56 4.7 -55.6 169 6 310.4 310.4 285.5 310.6 0.04 16 256 10013 -60.9 -65.6 54 4.7 -60.9 115 10 313.4 313.4 286.5 313.5 0.02 17 250 10160 -61.3 -66.1 53 4.8 -61.3 105 11 314.9 314.9 287.1 315.0 0.02 18 248 10210 -61.7 -66.7 51 5.0 -61.7 105 9 315.1 315.1 287.1 315.1 0.02 19 233 10596 -61.1 -66.0 52 4.9 -61.2 121 9 321.6 321.6 289.3 321.7 0.02 20 220 10955 -56.9 -61.9 53 5.0 -57.0 136 9 333.4 333.5 292.7 333.6 0.04 21 202 11497 -55.1 -60.0 54 4.9 -55.2 157 9 344.5 344.5 295.4 344.8 0.06 22 200 11560 -55.1 -60.1 54 5.0 -55.2 160 9 345.5 345.5 295.7 345.8 0.06 23 174 12458 -52.1 -58.1 48 6.0 -52.3 165 10 364.5 364.5 299.7 364.9 0.09 24 150 13420 -52.3 -60.3 38 8.0 -52.6 170 11 380.0 380.0 302.3 380.3 0.08 25 100 16030 -52.7 -63.7 25 11.0 -53.2 180 5 425.9 425.9 308.4 426.3 0.07 26 87 16929 -52.9 -64.9 22 12.0 -53.5 160 5 442.8 442.8 310.2 443.2 0.07 27 74 17972 -53.5 -65.5 22 12.0 -54.2 138 5 462.5 462.5 312.0 463.0 0.08 28 70 18330 -52.7 -64.7 22 12.0 -53.5 130 5 471.6 471.7 312.8 472.2 0.09 29 54 20002 -51.9 -65.9 17 14.0 -53.0 157 7 509.8 509.9 315.7 510.5 0.10 30 50 20500 -51.5 -65.5 17 14.0 -52.7 165 7 522.1 522.1 316.5 522.9 0.11 31 47 20902 -50.7 -64.7 17 14.0 -52.1 186 7 533.4 533.4 317.2 534.3 0.14 32 46 21042 -50.9 -64.9 17 14.0 -52.3 194 7 536.2 536.2 317.3 537.1 0.13 33 38 22276 -53.5 -68.5 14 15.0 -54.8 259 6 559.6 559.7 318.6 560.3 0.10 34 37 22447 -53.3 -68.3 14 15.0 -54.6 268 6 564.4 564.5 318.9 565.2 0.11 35 30 23800 -52.1 -68.1 13 16.0 -53.9 340 5 602.6 602.7 320.7 603.6 0.13 36 23 25527 -51.9 -67.9 13 16.0 -54.2 39 6 650.8 650.8 322.7 652.2 0.18 37 21 26121 -50.1 -66.1 14 16.0 -52.9 59 7 673.4 673.5 323.6 675.5 0.25 38 20 26440 -50.9 -66.9 13 16.0 -53.7 70 7 680.4 680.5 323.9 682.4 0.24 39 16 27891 -51.5 -68.5 11 17.0 -54.6 723.3 723.4 325.2 725.4 0.24 40 15 28309 -51.9 -68.9 11 17.0 -55.1 735.4 735.5 325.6 737.6 0.24 41 12 29778 -45.1 -63.1 12 18.0 -51.1 807.9 808.3 327.6 814.6 0.66 42 10 30995 -45.3 -63.3 11 18.0 -51.8 850.5 850.8 328.6 858.6 0.77 43 10 30995 -44.3 -62.3 12 18.0 -51.2 854.2 854.6 328.7 863.5 0.88 TRP 248 10210 -61.7 -66.7 51 5.0 -61.7 105 9 315.1 315.1 287.1 315.1 0.02 WND Sounding variables and indices 1000-500 mb thick: 5369.00 m Freezing level: Surface below freezing Freezing level: 923.37 mb = 783.48 m = 2570.45 ft Freezing level: 825.58 mb = 1686.50 m = 5533.05 ft Freezing level: 792.00 mb = 2016.72 m = 6616.46 ft Freezing level: 792.00 mb = 2016.72 m = 6616.46 ft Wetbulb zero: Below ground Precipitable water: 0.16 inches Sfc-500 mean rel hum: 19.63 % Est. max temperature: 13.11 C = 55.60 F Sfc-Lift cond lev (LCL): 831.39 mb = 1629.85 m = 5347.21 ft T: 0.39 C 700-500 lapse rate: 7.85 C/km ThetaE index: 1.02 C Layer 882.0- 821.0 mb Conv cond level (CCL): 588.28 mb = 4291.75 m = 14080.37 ft Mean mixing ratio: 1.73 g/kg Conv temperature: 18.74 C = 65.74 F Cap Strength: 8.01 C Lifted Index: 8.70 C Risk: None Lifted Index @300 mb: 13.42 C Lifted Index @700 mb: 7.97 C Showalter Index: 8.05 C Risk: None Total Totals Index: 40.20 C Risk: None Vertical Totals Index: 28.10 C Cross Totals Index: 12.10 C K Index: -9.30 Risk: None Sweat Index: 47.00 Risk: None Energy Index: 1.91 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 35.25 J/kg Max Up Vert Vel: 8.40 m/s Conv Inhibition (B-): 58072.77 J/kg Cap Strength: 8.64 C Lift Cond Lev (LCL): 697.85 mb = 3012.05 m = 9881.95 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 263 at 9 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 ---------------------------------------------------------- 0 928 743 230 1 0.8 0.6 | 87 8 -7.7 -0.4 1 925 769 215 3 1.7 2.5 | 102 7 -6.8 1.4 2 850 1453 190 19 3.3 18.7 | 164 18 -5.2 17.7 3 700 2989 250 13 12.2 4.4 | 228 5 3.7 3.4 4 500 5510 260 9 8.9 1.6 | 215 1 0.4 0.5 5 400 7090 195 5 1.3 4.8 | 118 8 -7.2 3.8 6 300 9010 185 5 0.4 5.0 | 116 9 -8.1 3.9 7 250 10160 105 11 -10.6 2.8 | 95 19 -19.1 1.8 8 248 10210 105 9 -8.7 2.3 | 94 17 -17.2 1.3 9 200 11560 160 9 -3.1 8.5 | 123 14 -11.6 7.4 10 150 13420 170 11 -1.9 10.8 | 133 14 -10.4 9.8 11 100 16030 180 5 0.0 5.0 | 115 9 -8.5 4.0 12 70 18330 130 5 -3.8 3.2 | 100 13 -12.3 2.2 13 50 20500 165 7 -1.8 6.8 | 119 12 -10.3 5.7 14 30 23800 340 5 1.7 -4.7 | 50 9 -6.8 -5.7 15 20 26440 70 7 -6.6 -2.4 | 77 15 -15.1 -3.4 Wind Parameters Mean winds (0-6000m): 233.0 at 11.4 knts Storm direction: 263.0 at 8.6 knts Shear (0-3000m) pos: 2.1 neg: 2.3 tot: 4.4 10-3/s Storm rel Dir Shear (0-3000m): 142.2 deg Storm rel helicity (0-3000m) pos: 60.7 neg: 0.0 tot: 60.7 m^2/s^2 ave: 20.2 10^-3 m/s^2 rel: 0.60 Storm rel vorticity (0-3000m) horiz: 6.5 stream: 3.9 10^-3/s Energy-Hel index: 0.01 Bulk Rich Number: 6.84 Bulk Shear: 5.16 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 ------------------------------------------------------------------------------- 500 201 8 140 9| 0.0 13.6 13.6| 21.1 0.0 21.1 42.1 0.75| 13.9 10.4 1000 194 13 155 13| 2.0 6.8 8.8| 35.7 0.0 35.7 35.7 0.60| 11.5 6.9 1500 200 14 164 13| 2.2 4.5 6.7| 50.0 0.0 50.0 33.3 0.62| 9.7 6.0 2000 206 14 170 12| 2.6 3.4 6.0| 58.1 0.0 58.1 29.0 0.62| 8.7 5.4 2500 212 14 175 11| 2.5 2.7 5.2| 60.7 0.0 60.7 24.3 0.61| 7.6 4.6 3000 218 14 181 10| 2.1 2.3 4.4| 60.7 0.0 60.7 20.2 0.60| 6.5 3.9 4000 227 13 188 8| 1.6 1.7 3.3| 60.8 -0.0 60.7 15.2 0.57| 5.1 2.9 5000 233 12 191 7| 1.3 1.4 2.7| 60.8 -0.4 60.4 12.1 0.51| 4.3 2.2 6000 233 11 186 6| 1.1 1.4 2.5| 60.8 -3.5 57.2 9.5 0.39| 4.1 1.6 Wrote GIF file: /home/apache/climate/data/raob//U4688/skewt/U4688.skewt.20250421.12.gif