UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025041700.upa.cvt Date: 0000Z 17 APR 25 Searching for U4688... Searching the city database file for: U4688 ... Date:0000Z 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 1 925 693 280 7 SFC 920 735 -4.1 -12.1 54 8.0 -6.4 280 7 275.5 275.8 271.2 280.2 1.64 3 889 1002 -7.3 -18.3 41 11.0 -9.9 299 6 274.9 275.1 269.8 277.9 1.02 4 850 1348 -9.3 -16.3 57 7.0 -11.0 325 5 276.4 276.6 271.1 280.0 1.26 5 788 1930 -12.9 -18.9 61 6.0 -14.2 10 5 278.6 278.8 272.2 281.8 1.09 6 761 2196 -12.9 -17.3 70 4.4 -13.9 31 5 281.4 281.6 274.1 285.2 1.29 7 736 2450 -14.1 -19.1 66 5.0 -15.2 50 5 282.8 283.0 274.6 286.2 1.15 8 700 2828 -17.3 -23.3 60 6.0 -18.4 80 5 283.3 283.5 274.5 285.9 0.84 9 663 3233 -21.1 -27.1 58 6.0 -22.0 53 7 283.5 283.6 274.2 285.4 0.63 10 653 3345 -20.7 -26.7 59 6.0 -21.7 45 7 285.2 285.3 275.2 287.2 0.66 11 629 3624 -17.7 -29.7 34 12.0 -19.7 26 9 291.7 291.8 278.3 293.3 0.52 12 607 3891 -17.9 -34.9 21 17.0 -20.3 8 10 294.4 294.5 279.3 295.5 0.32 13 593 4065 -19.7 -38.7 17 19.0 -22.0 356 11 294.3 294.3 279.1 295.1 0.23 14 500 5310 -28.7 -44.7 20 16.0 -30.0 270 17 298.0 298.1 280.7 298.5 0.14 15 400 6870 -41.3 -51.3 33 10.0 -41.7 270 25 301.3 301.3 282.0 301.6 0.08 16 394 6972 -42.7 -51.7 37 9.0 -43.0 270 26 300.8 300.8 281.8 301.1 0.08 17 386 7110 -43.3 -52.3 36 9.0 -43.6 270 27 301.8 301.8 282.2 302.1 0.08 18 305 8663 -51.5 -61.5 29 10.0 -51.7 270 38 311.3 311.3 285.8 311.4 0.03 19 300 8770 -51.1 -61.1 29 10.0 -51.3 270 36 313.3 313.3 286.5 313.5 0.03 20 250 9960 -49.3 -61.3 23 12.0 -49.6 250 36 332.8 332.8 292.5 332.9 0.04 21 200 11430 -48.7 -63.7 16 15.0 -49.2 245 29 355.7 355.7 297.8 355.8 0.04 22 168 12575 -47.7 -63.7 14 16.0 -48.3 245 24 375.5 375.5 301.5 375.7 0.04 23 150 13320 -48.7 -64.7 14 16.0 -49.3 245 21 386.2 386.2 303.2 386.4 0.04 24 100 15970 -51.5 -69.5 10 18.0 -52.2 240 17 428.2 428.2 308.7 428.4 0.03 25 70 18280 -53.1 -70.1 11 17.0 -53.9 240 15 470.8 470.8 312.7 471.0 0.04 26 52 20189 -53.3 -71.3 9 18.0 -54.4 253 10 512.1 512.1 315.8 512.4 0.05 27 50 20440 -55.3 -73.3 9 18.0 -56.2 255 9 513.2 513.2 315.9 513.4 0.04 28 49 20569 -55.3 -73.3 9 18.0 -56.2 516.1 516.1 316.1 516.4 0.04 29 44 21252 -57.3 -74.3 10 17.0 -58.1 527.4 527.4 316.8 527.6 0.04 30 36 22526 -55.3 -73.3 9 18.0 -56.5 563.7 563.7 318.9 564.1 0.05 31 30 23690 -54.9 -71.9 10 17.0 -56.3 595.0 595.0 320.4 595.5 0.08 32 29 23907 -55.1 -72.1 10 17.0 -56.6 600.2 600.2 320.6 600.8 0.08 TRP 305 8663 -51.5 -61.5 29 10.0 -51.7 270 38 311.3 311.3 285.8 311.4 0.03 WND Sounding variables and indices 1000-500 mb thick: 5237.00 m Freezing level: Surface below freezing Wetbulb zero: Below ground Precipitable water: 0.15 inches Sfc-500 mean rel hum: 43.19 % Est. max temperature: 0.69 C = 33.24 F Sfc-Lift cond lev (LCL): 810.50 mb = 1713.45 m = 5621.49 ft T: -11.56 C 700-500 lapse rate: 4.59 C/km ThetaE index: 2.30 C Layer 889.0- 850.0 mb Conv cond level (CCL): 680.05 mb = 3043.34 m = 9984.58 ft Mean mixing ratio: 1.22 g/kg Conv temperature: 3.59 C = 38.47 F Cap Strength: 14.13 C Lifted Index: 15.64 C Risk: None Lifted Index @300 mb: 24.00 C Lifted Index @700 mb: 5.77 C Showalter Index: 15.17 C Risk: None Total Totals Index: 31.80 C Risk: None Vertical Totals Index: 19.40 C Cross Totals Index: 12.40 C K Index: -2.90 Risk: None Sweat Index: 27.00 Risk: None Energy Index: 3.92 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 9.85 J/kg Max Up Vert Vel: 4.44 m/s Conv Inhibition (B-): 49999.06 J/kg Cap Strength: 15.66 C Lift Cond Lev (LCL): 760.21 mb = 2203.40 m = 7228.93 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 307 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 ---------------------------------------------------------- 0 920 735 280 7 6.9 -1.2 | 181 4 0.1 4.0 1 850 1348 325 5 2.9 -4.1 | 106 4 -4.0 1.1 2 700 2828 80 5 -4.9 -0.9 | 110 13 -11.8 4.4 3 500 5310 270 17 17.0 -0.0 | 243 11 10.2 5.2 4 400 6870 270 25 25.0 -0.0 | 254 19 18.2 5.2 5 305 8663 270 38 38.0 -0.0 | 260 32 31.2 5.2 6 300 8770 270 36 36.0 -0.0 | 260 30 29.2 5.2 7 250 9960 250 36 33.8 12.3 | 237 32 27.0 17.6 8 200 11430 245 29 26.3 12.3 | 228 26 19.5 17.5 9 150 13320 245 21 19.0 8.9 | 221 19 12.2 14.1 10 100 15970 240 17 14.7 8.5 | 210 16 7.9 13.7 11 70 18280 240 15 13.0 7.5 | 206 14 6.2 12.7 12 50 20440 255 9 8.7 2.3 | 194 8 1.9 7.6 Wind Parameters Mean winds (0-6000m): 277.5 at 11.5 knts Storm direction: 307.5 at 8.6 knts Shear (0-3000m) pos: 2.0 neg: 1.3 tot: 3.3 10-3/s Storm rel Dir Shear (0-3000m): -111.7 deg Storm rel helicity (0-3000m) pos: 9.7 neg: -31.7 tot: -22.0 m^2/s^2 ave: -7.3 10^-3 m/s^2 rel: -0.43 Storm rel vorticity (0-3000m) horiz: 4.1 stream: -1.8 10^-3/s Energy-Hel index: 0.00 Bulk Rich Number: 2.20 Bulk Shear: 4.47 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 ------------------------------------------------------------------------------- 500 294 6 157 3| 4.3 0.0 4.3| 0.0 -2.8 -2.8 -5.6 -0.83| 4.4 -3.7 1000 312 6 118 3| 3.8 0.0 3.8| 0.0 -4.8 -4.8 -4.8 -0.67| 4.0 -2.7 1500 330 5 98 4| 3.5 0.0 3.5| 1.6 -4.8 -3.3 -2.2 -0.41| 3.8 -1.6 2000 343 5 92 5| 3.0 0.0 3.0| 8.1 -4.8 3.3 1.6 -0.16| 3.7 -0.6 2500 4 5 89 7| 2.4 0.6 3.0| 9.7 -16.3 -6.6 -2.6 -0.28| 3.8 -1.1 3000 11 6 86 8| 2.0 1.3 3.3| 9.7 -31.7 -22.0 -7.3 -0.43| 4.1 -1.8 4000 334 7 69 4| 1.5 2.2 3.7| 9.7 -57.1 -47.5 -11.9 -0.62| 5.0 -3.1 5000 285 9 216 4| 1.2 2.5 3.7| 12.5 -76.7 -64.2 -12.8 -0.62| 5.4 -3.3 6000 277 11 231 6| 1.0 2.5 3.5| 19.6 -76.7 -57.1 -9.5 -0.54| 4.9 -2.6 Wrote GIF file: /home/apache/climate/data/raob//U4688/skewt/U4688.skewt.20250417.00.gif