UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025042412.upa.cvt Date: 1200Z 24 APR 25 Searching for U4688... Searching the city database file for: U4688 ... Date:1200Z 24 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 109 SFC 925 734 -0.7 -8.7 55 8.0 -3.4 280 1 278.6 279.0 273.8 284.7 2.14 2 895 1001 4.4 -8.6 38 13.0 -0.4 214 3 286.5 286.9 278.2 293.0 2.23 3 850 1419 0.4 -14.6 31 15.0 -4.3 110 5 286.6 286.8 277.1 290.9 1.45 4 785 2051 -4.7 -16.7 38 12.0 -8.1 116 5 287.7 287.9 277.5 291.7 1.32 5 741 2502 -7.5 -24.5 24 17.0 -11.3 121 5 289.4 289.6 277.5 291.7 0.71 6 700 2943 -10.7 -22.7 37 12.0 -13.4 125 5 290.6 290.8 278.3 293.4 0.88 7 611 3969 -17.9 -25.9 50 8.0 -19.4 135 5 293.9 294.0 279.7 296.3 0.76 8 601 4092 -19.1 -27.1 49 8.0 -20.5 136 5 293.9 294.0 279.6 296.1 0.69 9 537 4921 -22.1 -40.1 18 18.0 -24.2 145 5 299.9 299.9 281.6 300.7 0.22 10 527 5059 -23.1 -43.1 14 20.0 -25.1 146 5 300.3 300.4 281.7 300.9 0.16 11 501 5426 -26.1 -36.1 39 10.0 -27.3 150 5 301.0 301.1 282.3 302.2 0.35 12 500 5440 -26.1 -36.1 39 10.0 -27.3 150 5 301.2 301.3 282.4 302.4 0.35 13 473 5844 -28.3 -34.3 56 6.0 -29.0 166 6 303.3 303.4 283.3 304.8 0.44 14 400 7040 -34.7 -38.5 68 3.8 -35.1 215 11 309.9 310.0 285.7 311.1 0.34 15 398 7075 -34.9 -38.7 68 3.8 -35.3 215 11 310.1 310.1 285.8 311.3 0.34 16 300 8980 -49.3 -53.8 59 4.5 -49.4 200 25 315.9 315.9 287.5 316.2 0.08 17 250 10150 -57.9 -62.8 53 4.9 -58.0 200 29 320.0 320.0 288.8 320.1 0.03 18 238 10462 -60.3 -64.9 55 4.6 -60.3 200 26 320.9 320.9 289.0 321.0 0.03 19 219 10984 -62.3 -67.2 52 4.9 -62.4 200 21 325.5 325.5 290.5 325.6 0.02 20 200 11560 -55.3 -60.1 55 4.8 -55.4 185 15 345.2 345.2 295.6 345.4 0.06 21 192 11821 -52.3 -57.3 55 5.0 -52.5 183 14 354.1 354.1 297.6 354.4 0.09 22 187 11991 -52.7 -57.7 55 5.0 -52.9 181 13 356.1 356.1 298.0 356.5 0.08 23 150 13410 -52.3 -59.3 43 7.0 -52.6 170 7 380.0 380.0 302.3 380.4 0.09 24 100 16030 -52.3 -65.3 19 13.0 -52.9 145 11 426.7 426.7 308.5 427.0 0.06 25 70 18340 -52.3 -69.3 11 17.0 -53.2 130 11 472.5 472.5 312.8 472.8 0.05 26 56 19791 -49.9 -68.9 9 19.0 -51.3 143 7 509.1 509.1 315.6 509.5 0.06 27 50 20530 -51.3 -70.3 9 19.0 -52.7 150 5 522.6 522.6 316.5 523.0 0.06 28 43 21507 -53.3 -73.3 7 20.0 -54.6 137 6 540.7 540.7 317.6 541.0 0.04 29 30 23830 -52.7 -74.7 5 22.0 -54.6 105 7 601.0 601.0 320.7 601.3 0.05 30 20 26450 -51.9 -74.9 5 23.0 -54.7 320 3 677.3 677.3 323.7 677.9 0.07 31 16 27911 -47.7 -71.7 5 24.0 -52.4 0 6 735.7 735.7 325.6 737.0 0.15 32 11 30400 -45.3 -71.3 4 26.0 -52.2 68 12 827.6 827.7 328.0 829.9 0.23 33 10 31040 -42.5 -69.5 4 27.0 -51.1 85 13 860.9 861.1 328.7 864.4 0.33 34 8.7 31979 -43.3 -69.3 4 26.0 -52.0 892.8 893.0 329.4 897.1 0.39 TRP 219 10984 -62.3 -67.2 52 4.9 -62.4 200 21 325.5 325.5 290.5 325.6 0.02 WND Sounding variables and indices 1000-500 mb thick: 5331.00 m Freezing level: Surface below freezing Freezing level: 920.88 mb = 770.72 m = 2528.58 ft Freezing level: 844.90 mb = 1468.56 m = 4818.07 ft Wetbulb zero: Below ground Precipitable water: 0.21 inches Sfc-500 mean rel hum: 35.46 % Est. max temperature: 8.58 C = 47.44 F Sfc-Lift cond lev (LCL): 815.85 mb = 1744.74 m = 5724.13 ft T: -2.23 C 700-500 lapse rate: 6.17 C/km ThetaE index: 2.12 C Layer 850.0- 785.0 mb Conv cond level (CCL): 643.33 mb = 3580.08 m = 11745.54 ft Mean mixing ratio: 1.83 g/kg Conv temperature: 13.06 C = 55.52 F Cap Strength: 9.39 C Lifted Index: 9.51 C Risk: None Lifted Index @300 mb: 17.77 C Lifted Index @700 mb: 4.34 C Showalter Index: 9.45 C Risk: None Total Totals Index: 38.00 C Risk: None Vertical Totals Index: 26.50 C Cross Totals Index: 11.50 C K Index: -0.10 Risk: None Sweat Index: 15.00 Risk: None Energy Index: 2.36 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 27.03 J/kg Max Up Vert Vel: 7.35 m/s Conv Inhibition (B-): 64959.18 J/kg Cap Strength: 9.34 C Lift Cond Lev (LCL): 714.08 mb = 2788.85 m = 9149.66 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 175 at 4 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 ---------------------------------------------------------- 0 925 734 280 1 1.0 -0.2 | 343 4 1.3 -4.2 1 850 1419 110 5 -4.7 1.7 | 63 5 -4.4 -2.3 2 700 2943 125 5 -4.1 2.9 | 74 4 -3.8 -1.1 3 500 5440 150 5 -2.5 4.3 | 99 2 -2.2 0.3 4 400 7040 215 11 6.3 9.0 | 233 8 6.6 5.0 5 300 8980 200 25 8.6 23.5 | 204 21 8.9 19.5 6 250 10150 200 29 9.9 27.3 | 204 25 10.2 23.3 7 219 10984 200 21 7.2 19.7 | 205 17 7.5 15.8 8 200 11560 185 15 1.3 14.9 | 188 11 1.6 11.0 9 150 13410 170 7 -1.2 6.9 | 163 3 -0.9 2.9 10 100 16030 145 11 -6.3 9.0 | 130 8 -6.0 5.0 11 70 18340 130 11 -8.4 7.1 | 111 9 -8.1 3.1 12 50 20530 150 5 -2.5 4.3 | 99 2 -2.2 0.3 13 30 23830 105 7 -6.8 1.8 | 71 7 -6.4 -2.2 14 20 26450 320 3 1.9 -2.3 | 340 7 2.3 -6.3 15 10 31040 85 13 -13.0 -1.1 | 68 14 -12.6 -5.1 Wind Parameters Mean winds (0-6000m): 145.4 at 5.3 knts Storm direction: 175.4 at 4.0 knts Shear (0-3000m) pos: 0.3 neg: 1.0 tot: 1.3 10-3/s Storm rel Dir Shear (0-3000m): 97.7 deg Storm rel helicity (0-3000m) pos: 1.8 neg: -2.3 tot: -0.6 m^2/s^2 ave: -0.2 10^-3 m/s^2 rel: 0.09 Storm rel vorticity (0-3000m) horiz: 2.1 stream: 0.2 10^-3/s Energy-Hel index: 0.00 Bulk Rich Number: 10.83 Bulk Shear: 2.50 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 92 2 28 4| 0.0 4.7 4.7| 0.4 -1.7 -1.3 -2.6 0.08| 6.6 0.5 1000 112 4 49 4| 0.0 3.1 3.1| 0.6 -2.3 -1.7 -1.7 0.00| 5.3 0.0 1500 114 4 55 4| 0.1 2.1 2.2| 0.9 -2.3 -1.4 -0.9 0.03| 3.7 0.1 2000 116 4 60 4| 0.2 1.5 1.8| 1.2 -2.3 -1.1 -0.5 0.05| 2.9 0.1 2500 118 4 62 4| 0.3 1.2 1.5| 1.5 -2.3 -0.8 -0.3 0.07| 2.4 0.2 3000 120 5 65 4| 0.3 1.0 1.3| 1.8 -2.3 -0.6 -0.2 0.09| 2.1 0.2 4000 125 5 70 4| 0.3 0.8 1.1| 2.2 -2.3 -0.1 -0.0 0.13| 1.7 0.2 5000 131 5 75 3| 0.5 0.6 1.1| 3.4 -2.3 1.0 0.2 0.24| 1.6 0.4 6000 145 5 98 3| 0.9 0.5 1.5| 9.3 -2.3 6.9 1.2 0.41| 1.9 0.8 Wrote GIF file: /home/apache/climate/data/raob//U4688/skewt/U4688.skewt.20250424.12.gif