UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025042600.upa.cvt Date: 0000Z 26 APR 25 Searching for U4688... Searching the city database file for: U4688 ... Date:0000Z 26 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 145 SFC 929 743 1.2 -6.8 55 8.0 -1.7 40 1 280.2 280.6 275.2 287.2 2.47 2 925 778 0.6 -9.4 47 10.0 -2.8 45 1 279.9 280.3 274.4 285.7 2.02 3 850 1449 -1.1 -13.1 40 12.0 -4.9 120 5 285.0 285.3 276.6 289.8 1.64 4 818 1754 -2.5 -14.5 39 12.0 -6.1 142 5 286.7 286.9 277.3 291.2 1.52 5 700 2968 -12.7 -18.7 61 6.0 -14.2 230 5 288.4 288.6 277.7 292.2 1.25 6 645 3586 -17.7 -22.6 66 4.9 -18.7 251 7 289.6 289.8 277.9 292.6 0.96 7 620 3881 -18.7 -23.2 68 4.5 -19.6 261 9 291.7 291.9 278.9 294.7 0.95 8 603 4088 -18.7 -24.7 59 6.0 -19.8 268 9 294.1 294.2 279.9 296.8 0.86 9 577 4414 -20.9 -33.9 30 13.0 -22.7 279 11 295.2 295.3 279.7 296.5 0.38 10 544 4847 -23.3 -32.3 43 9.0 -24.6 294 12 297.4 297.5 280.8 298.9 0.47 11 501 5446 -26.3 -42.3 21 16.0 -27.8 314 15 300.8 300.8 282.0 301.4 0.18 12 500 5460 -26.5 -42.5 21 16.0 -28.0 315 15 300.7 300.8 281.9 301.4 0.18 13 478 5784 -28.9 -47.9 14 19.0 -30.3 313 18 301.7 301.7 282.2 302.0 0.10 14 400 7030 -39.9 -54.9 19 15.0 -40.5 305 29 303.1 303.1 282.7 303.3 0.06 15 340 8113 -49.3 -62.3 20 13.0 -49.6 297 28 304.8 304.8 283.3 304.9 0.03 16 300 8920 -55.1 -67.1 21 12.0 -55.2 290 27 307.7 307.7 284.5 307.7 0.02 17 264 9735 -59.7 -71.7 20 12.0 -59.8 290 31 312.4 312.4 286.2 312.4 0.01 18 250 10080 -57.7 -69.7 20 12.0 -57.8 285 25 320.3 320.3 288.8 320.3 0.01 19 226 10721 -56.3 -68.3 21 12.0 -56.5 294 18 331.8 331.8 292.2 331.9 0.02 20 210 11193 -51.7 -64.7 20 13.0 -52.0 301 12 346.0 346.0 295.8 346.2 0.03 21 200 11510 -52.5 -65.5 19 13.0 -52.8 305 9 349.6 349.6 296.5 349.8 0.03 22 150 13380 -50.3 -69.3 9 19.0 -50.9 165 7 383.4 383.4 302.8 383.5 0.02 23 101 15946 -51.1 -74.1 5 23.0 -51.9 106 5 427.8 427.8 308.6 427.9 0.02 24 100 16010 -51.7 -74.7 5 23.0 -52.4 105 5 427.8 427.8 308.6 427.9 0.02 25 70 18330 -51.1 -76.1 4 25.0 -52.2 150 7 475.1 475.1 313.1 475.2 0.02 26 50 20520 -51.5 -76.5 3 25.0 -52.9 170 7 522.1 522.1 316.4 522.3 0.02 27 36 22653 -51.5 -76.5 3 25.0 -53.4 573.5 573.6 319.3 573.8 0.03 TRP 264 9735 -59.7 -71.7 20 12.0 -59.8 290 31 312.4 312.4 286.2 312.4 0.01 WND Sounding variables and indices 1000-500 mb thick: 5315.00 m Freezing level: 898.53 mb = 1014.82 m = 3329.43 ft Wetbulb zero: Below ground Precipitable water: 0.21 inches Sfc-500 mean rel hum: 47.72 % Est. max temperature: 8.12 C = 46.61 F Sfc-Lift cond lev (LCL): 819.91 mb = 1735.96 m = 5695.33 ft T: -2.42 C 700-500 lapse rate: 5.54 C/km ThetaE index: 1.48 C Layer 925.0- 850.0 mb Conv cond level (CCL): 676.47 mb = 3226.03 m = 10583.96 ft Mean mixing ratio: 1.79 g/kg Conv temperature: 9.75 C = 49.55 F Cap Strength: 11.09 C Lifted Index: 11.04 C Risk: None Lifted Index @300 mb: 13.79 C Lifted Index @700 mb: 4.04 C Showalter Index: 9.87 C Risk: None Total Totals Index: 38.80 C Risk: None Vertical Totals Index: 25.40 C Cross Totals Index: 13.40 C K Index: 6.30 Risk: None Sweat Index: 25.00 Risk: None Energy Index: 2.39 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 17.99 J/kg Max Up Vert Vel: 6.00 m/s Conv Inhibition (B-): 41103.89 J/kg Cap Strength: 10.77 C Lift Cond Lev (LCL): 737.11 mb = 2565.55 m = 8417.07 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 331 at 8 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 ---------------------------------------------------------- 0 929 743 40 1 -0.6 -0.8 | 144 7 -4.4 6.0 1 925 778 45 1 -0.7 -0.7 | 143 8 -4.5 6.1 2 850 1449 120 5 -4.3 2.5 | 139 12 -8.1 9.3 3 700 2968 230 5 3.8 3.2 | 180 10 0.0 10.0 4 500 5460 315 15 10.6 -10.6 | 299 8 6.8 -3.8 5 400 7030 305 29 23.8 -16.6 | 296 22 20.0 -9.8 6 300 8920 290 27 25.4 -9.2 | 276 22 21.6 -2.4 7 264 9735 290 31 29.1 -10.6 | 279 26 25.3 -3.8 8 250 10080 285 25 24.1 -6.5 | 269 20 20.3 0.3 9 200 11510 305 9 7.4 -5.2 | 245 4 3.6 1.6 10 150 13380 165 7 -1.8 6.8 | 158 15 -5.6 13.6 11 100 16010 105 5 -4.8 1.3 | 133 12 -8.6 8.1 12 70 18330 150 7 -3.5 6.1 | 150 15 -7.3 12.9 13 50 20520 170 7 -1.2 6.9 | 160 15 -5.0 13.7 Wind Parameters Mean winds (0-6000m): 300.8 at 10.4 knts Storm direction: 330.8 at 7.8 knts Shear (0-3000m) pos: 1.5 neg: 0.0 tot: 1.5 10-3/s Storm rel Dir Shear (0-3000m): 61.5 deg Storm rel helicity (0-3000m) pos: 42.7 neg: -3.1 tot: 39.6 m^2/s^2 ave: 13.2 10^-3 m/s^2 rel: 0.65 Storm rel vorticity (0-3000m) horiz: 3.4 stream: 2.2 10^-3/s Energy-Hel index: 0.00 Bulk Rich Number: 0.89 Bulk Shear: 20.12 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 85 2 137 9| 3.4 0.0 3.4| 0.3 -3.1 -2.8 -5.7 -0.38| 3.7 -1.4 1000 118 3 141 11| 2.7 0.0 2.7| 9.3 -3.1 6.2 6.2 0.19| 3.9 0.7 1500 135 4 145 12| 2.0 0.0 2.0| 19.8 -3.1 16.7 11.2 0.43| 3.7 1.6 2000 151 4 151 12| 1.5 0.0 1.5| 28.5 -3.1 25.4 12.7 0.53| 3.6 1.9 2500 171 4 158 12| 1.5 0.0 1.5| 35.2 -3.1 32.1 12.8 0.59| 3.4 2.0 3000 198 5 169 12| 1.5 0.0 1.5| 42.7 -3.1 39.6 13.2 0.65| 3.4 2.2 4000 251 6 193 9| 1.6 0.0 1.6| 59.1 -3.1 55.9 14.0 0.73| 3.5 2.5 5000 292 8 222 5| 1.8 0.0 1.8| 72.5 -3.1 69.4 13.9 0.74| 3.7 2.7 6000 301 10 254 5| 1.5 0.8 2.3| 72.5 -6.3 66.2 11.0 0.57| 3.9 2.2 Wrote GIF file: /home/apache/climate/data/raob//U4688/skewt/U4688.skewt.20250426.00.gif