UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025042012.upa.cvt Date: 1200Z 20 APR 25 Searching for U4688... Searching the city database file for: U4688 ... Date:1200Z 20 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 158 SFC 930 736 -4.1 -12.1 54 8.0 -6.4 250 1 274.7 275.0 270.7 279.3 1.62 2 925 779 -3.7 -8.2 71 4.5 -5.2 230 1 275.5 275.9 272.2 281.7 2.22 3 892 1068 1.4 -9.6 44 11.0 -2.4 213 4 283.7 284.0 276.5 289.7 2.07 4 880 1177 0.8 -11.2 40 12.0 -3.2 206 6 284.2 284.5 276.4 289.5 1.84 5 850 1454 -1.1 -13.1 40 12.0 -4.9 190 9 285.0 285.3 276.6 289.8 1.64 6 821 1730 -2.1 -12.1 46 10.0 -5.4 198 10 286.8 287.1 277.7 292.2 1.84 7 789 2047 -1.1 -12.1 43 11.0 -4.8 207 11 291.1 291.5 280.0 296.9 1.91 8 700 2990 -7.5 -20.5 35 13.0 -10.9 235 13 294.2 294.4 280.3 297.5 1.07 9 650 3559 -10.5 -29.5 19 19.0 -14.2 233 16 297.1 297.2 280.8 298.8 0.51 10 535 5012 -23.3 -45.3 11 22.0 -25.4 227 24 298.8 298.8 281.0 299.2 0.12 11 500 5500 -27.3 -48.3 12 21.0 -28.9 225 27 299.8 299.8 281.4 300.1 0.10 12 470 5945 -30.9 -47.9 17 17.0 -32.1 242 24 300.6 300.7 281.8 301.0 0.11 13 400 7080 -37.5 -43.5 53 6.0 -37.9 285 17 306.3 306.3 284.2 307.0 0.20 14 379 7451 -38.5 -44.5 53 6.0 -38.9 291 19 309.7 309.7 285.5 310.4 0.19 15 361 7781 -43.5 -48.2 60 4.7 -43.7 296 21 307.3 307.4 284.5 307.8 0.13 16 341 8162 -46.3 -50.4 63 4.1 -46.4 302 23 308.6 308.6 284.9 309.0 0.11 17 335 8279 -48.1 -52.4 61 4.3 -48.3 303 23 307.7 307.7 284.6 308.0 0.09 18 306 8872 -50.5 -54.5 62 4.0 -50.6 313 26 312.4 312.4 286.3 312.7 0.08 19 250 10160 -60.3 -64.4 58 4.1 -60.3 295 25 316.4 316.4 287.6 316.5 0.03 20 230 10677 -62.1 -66.3 57 4.2 -62.1 215 19 321.3 321.3 289.2 321.4 0.02 21 200 11550 -56.7 -60.7 60 4.0 -56.8 210 13 343.0 343.0 295.1 343.2 0.05 22 156 13137 -52.1 -56.5 59 4.4 -52.3 240 4 376.1 376.1 301.7 376.6 0.12 23 150 13390 -52.5 -57.5 55 5.0 -52.7 245 3 379.6 379.6 302.3 380.1 0.11 24 100 16010 -53.9 -60.9 42 7.0 -54.2 315 5 423.6 423.6 308.2 424.1 0.11 25 70 18300 -52.7 -60.7 37 8.0 -53.3 325 5 471.6 471.7 312.8 472.5 0.15 26 50 20460 -52.5 -62.5 29 10.0 -53.4 250 5 519.8 519.8 316.4 520.9 0.17 27 30 23760 -53.1 -66.1 19 13.0 -54.6 599.9 599.9 320.7 601.2 0.18 28 29 23979 -52.9 -65.9 19 13.0 -54.5 606.3 606.3 320.9 607.7 0.19 TRP 230 10677 -62.1 -66.3 57 4.2 -62.1 215 19 321.3 321.3 289.2 321.4 0.02 WND Sounding variables and indices 1000-500 mb thick: 5342.00 m Freezing level: Surface below freezing Freezing level: 901.06 mb = 988.79 m = 3244.02 ft Freezing level: 867.37 mb = 1293.56 m = 4243.91 ft Wetbulb zero: Below ground Precipitable water: 0.21 inches Sfc-500 mean rel hum: 29.09 % Est. max temperature: 12.29 C = 54.12 F Sfc-Lift cond lev (LCL): 819.31 mb = 1746.77 m = 5730.79 ft T: -2.05 C 700-500 lapse rate: 7.89 C/km ThetaE index: 0.13 C Layer 880.0- 850.0 mb Conv cond level (CCL): 602.05 mb = 4131.00 m = 13552.99 ft Mean mixing ratio: 1.90 g/kg Conv temperature: 18.58 C = 65.45 F Cap Strength: 10.75 C Lifted Index: 10.30 C Risk: None Lifted Index @300 mb: 17.48 C Lifted Index @700 mb: 9.33 C Showalter Index: 9.07 C Risk: None Total Totals Index: 40.40 C Risk: None Vertical Totals Index: 26.20 C Cross Totals Index: 14.20 C K Index: 0.10 Risk: None Sweat Index: 45.00 Risk: None Energy Index: 2.23 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 42.95 J/kg Max Up Vert Vel: 9.27 m/s Conv Inhibition (B-): 46662.96 J/kg Cap Strength: 10.73 C Lift Cond Lev (LCL): 749.23 mb = 2454.44 m = 8052.51 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 260 at 13 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 ---------------------------------------------------------- 0 930 736 250 1 0.9 0.3 | 81 12 -11.4 -1.8 1 925 779 230 1 0.8 0.6 | 82 12 -11.6 -1.5 2 850 1454 190 9 1.6 8.9 | 122 13 -10.8 6.7 3 700 2990 235 13 10.6 7.5 | 162 6 -1.7 5.3 4 500 5500 225 27 19.1 19.1 | 202 18 6.7 16.9 5 400 7080 285 17 16.4 -4.4 | 328 8 4.1 -6.6 6 300 9000 315 27 19.1 -19.1 | 342 22 6.7 -21.3 7 250 10160 295 25 22.7 -10.6 | 321 16 10.3 -12.8 8 230 10677 215 19 10.9 15.6 | 174 13 -1.5 13.4 9 200 11550 210 13 6.5 11.3 | 147 11 -5.8 9.1 10 150 13390 245 3 2.7 1.3 | 85 10 -9.6 -0.9 11 100 16010 315 5 3.5 -3.5 | 57 11 -8.8 -5.7 12 70 18300 325 5 2.9 -4.1 | 56 11 -9.5 -6.3 13 50 20460 250 5 4.7 1.7 | 86 8 -7.7 -0.5 Wind Parameters Mean winds (0-6000m): 230.0 at 16.7 knts Storm direction: 260.0 at 12.5 knts Shear (0-3000m) pos: 1.5 neg: 2.0 tot: 3.5 10-3/s Storm rel Dir Shear (0-3000m): 107.2 deg Storm rel helicity (0-3000m) pos: 42.7 neg: 0.0 tot: 42.7 m^2/s^2 ave: 14.2 10^-3 m/s^2 rel: 0.76 Storm rel vorticity (0-3000m) horiz: 3.8 stream: 2.9 10^-3/s Energy-Hel index: 0.01 Bulk Rich Number: 1.76 Bulk Shear: 24.41 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 ------------------------------------------------------------------------------- 500 207 3 95 11| 0.0 5.9 5.9| 15.2 0.0 15.2 30.3 0.93| 6.1 5.6 1000 194 6 108 11| 0.0 4.7 4.7| 25.5 0.0 25.5 25.5 0.85| 5.3 4.5 1500 200 7 116 11| 1.0 3.1 4.1| 31.2 0.0 31.2 20.8 0.82| 4.6 3.7 2000 208 9 123 10| 1.6 2.4 3.9| 35.6 0.0 35.6 17.8 0.78| 4.3 3.3 2500 216 9 129 9| 1.8 1.9 3.7| 39.2 0.0 39.2 15.7 0.77| 4.0 3.1 3000 220 10 136 8| 1.5 2.0 3.5| 42.7 0.0 42.7 14.2 0.76| 3.8 2.9 4000 224 13 154 8| 1.1 2.2 3.3| 48.5 0.0 48.5 12.1 0.67| 3.6 2.4 5000 225 16 171 9| 1.2 2.1 3.3| 65.5 0.0 65.5 13.1 0.63| 3.8 2.4 6000 230 17 183 9| 1.8 1.7 3.6|103.2 0.0 103.2 17.2 0.70| 4.5 3.1 Wrote GIF file: /home/apache/climate/data/raob//U4688/skewt/U4688.skewt.20250420.12.gif