UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025101812.upa.cvt Date: 1200Z 18 OCT 25 Searching for U4688... Searching the city database file for: U4688 ... Date:1200Z 18 OCT 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 208 SFC 931 742 -20.7 -24.1 74 3.4 -21.1 240 1 257.7 257.8 256.5 259.3 0.58 2 925 790 -18.7 -21.7 77 3.0 -19.1 255 1 260.2 260.3 258.8 262.2 0.73 3 917 855 -17.3 -19.7 82 2.4 -17.7 267 1 262.3 262.4 260.7 264.7 0.87 4 892 1063 -14.3 -16.1 86 1.8 -14.7 304 2 267.5 267.6 265.2 270.8 1.22 5 850 1427 -16.1 -18.6 81 2.5 -16.6 10 3 269.3 269.4 266.1 272.2 1.04 6 842 1498 -16.3 -18.7 82 2.4 -16.8 10 3 269.8 270.0 266.5 272.7 1.04 7 813 1765 -12.5 -15.3 80 2.8 -13.2 8 5 276.5 276.8 271.5 280.6 1.43 8 755 2328 -14.7 -18.6 72 3.9 -15.6 4 8 280.1 280.3 273.2 283.5 1.17 9 703 2868 -16.5 -22.5 60 6.0 -17.7 0 11 283.9 284.0 274.9 286.6 0.89 10 700 2900 -16.9 -22.9 60 6.0 -18.0 360 11 283.8 283.9 274.8 286.4 0.87 11 628 3706 -19.1 -23.6 68 4.5 -20.0 8 14 290.2 290.4 278.2 293.0 0.91 12 570 4421 -20.9 -35.9 25 15.0 -22.8 15 17 296.2 296.3 280.1 297.3 0.31 13 565 4485 -21.7 -37.7 22 16.0 -23.6 16 17 296.1 296.1 280.0 296.9 0.26 14 500 5370 -27.9 -41.9 25 14.0 -29.2 25 21 299.0 299.1 281.2 299.7 0.19 15 436 6337 -35.3 -47.3 28 12.0 -36.0 19 23 301.6 301.6 282.2 302.0 0.12 16 400 6930 -40.5 -52.5 26 12.0 -41.0 15 25 302.4 302.4 282.4 302.6 0.07 17 305 8715 -55.5 -65.5 28 10.0 -55.6 10 23 305.7 305.7 283.7 305.7 0.02 18 300 8820 -56.1 -66.1 27 10.0 -56.2 10 23 306.3 306.3 283.9 306.3 0.02 19 255 9837 -62.1 -71.1 29 9.0 -62.1 360 25 312.0 312.0 286.1 312.0 0.01 20 250 9960 -61.1 -70.1 29 9.0 -61.2 355 25 315.2 315.2 287.2 315.3 0.01 21 200 11370 -57.7 -66.7 31 9.0 -57.8 340 19 341.4 341.4 294.7 341.5 0.02 22 182 11965 -55.3 -64.3 32 9.0 -55.5 347 16 354.6 354.6 297.7 354.8 0.04 23 150 13190 -56.1 -67.1 24 11.0 -56.3 360 9 373.4 373.4 301.2 373.6 0.03 24 100 15780 -54.9 -69.9 14 15.0 -55.4 280 5 421.7 421.7 307.9 421.8 0.03 25 70 18060 -55.7 -72.7 10 17.0 -56.3 280 5 465.2 465.2 312.3 465.4 0.03 26 59 19152 -56.1 -74.1 9 18.0 -56.8 255 7 487.6 487.6 314.1 487.8 0.03 27 50 20210 -55.1 -74.1 8 19.0 -56.1 230 9 513.6 513.6 315.9 513.8 0.03 28 31 23288 -52.9 -73.9 6 21.0 -54.7 216 20 594.8 594.8 320.4 595.2 0.06 29 30 23500 -52.1 -74.1 5 22.0 -54.1 215 21 602.6 602.6 320.7 603.0 0.06 30 25 24684 -48.9 -71.9 5 23.0 -52.0 222 22 644.1 644.1 322.5 644.8 0.09 31 20 26140 -50.5 -74.5 4 24.0 -53.7 230 23 681.6 681.6 323.9 682.3 0.08 32 17 27201 -51.5 -75.5 4 24.0 -54.8 239 27 710.8 710.9 324.8 711.5 0.08 33 12 29504 -44.5 -70.5 4 26.0 -51.4 259 36 810.1 810.2 327.5 812.5 0.24 34 10 30720 -47.3 -73.3 4 26.0 -53.7 270 40 843.0 843.1 328.3 844.9 0.19 35 9.7 30921 -48.7 -73.7 4 25.0 -54.6 845.1 845.2 328.3 847.0 0.18 36 9.3 31200 -45.3 -71.3 4 26.0 -52.8 868.3 868.4 328.8 871.2 0.27 37 8.3 31958 -46.1 -72.1 4 26.0 -53.7 893.9 894.0 329.4 896.9 0.27 TRP 255 9837 -62.1 -71.1 29 9.0 -62.1 360 25 312.0 312.0 286.1 312.0 0.01 WND Sounding variables and indices 1000-500 mb thick: 5162.00 m Freezing level: Surface below freezing Wetbulb zero: Below ground Precipitable water: 0.16 inches Sfc-500 mean rel hum: 58.16 % Est. max temperature: -0.32 C = 31.42 F Sfc-Lift cond lev (LCL): 880.11 mb = 1164.26 m = 3819.70 ft T: -14.80 C 700-500 lapse rate: 4.45 C/km ThetaE index: 0.18 C Layer 700.0- 628.0 mb Conv cond level (CCL): 931.00 mb = 741.57 m = 2432.96 ft Mean mixing ratio: 1.05 g/kg Conv temperature: -17.43 C = 0.63 F Cap Strength: 22.91 C Lifted Index: 24.17 C Risk: None Lifted Index @300 mb: 25.88 C Lifted Index @700 mb: 13.78 C Showalter Index: 22.18 C Risk: None Total Totals Index: 21.10 C Risk: None Vertical Totals Index: 11.80 C Cross Totals Index: 9.30 C K Index: -12.80 Risk: None Sweat Index: 27.00 Risk: None Energy Index: 5.86 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 43.49 J/kg Max Up Vert Vel: 9.33 m/s Conv Inhibition (B-): 83771.30 J/kg Cap Strength: 23.95 C Lift Cond Lev (LCL): 848.87 mb = 1437.00 m = 4714.52 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 46 at 10 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 ---------------------------------------------------------- 0 931 742 240 1 0.9 0.5 | 227 11 8.4 7.7 1 925 790 255 1 1.0 0.3 | 228 11 8.5 7.5 2 850 1427 10 3 -0.5 -3.0 | 238 8 7.0 4.3 3 700 2900 360 11 -0.0 -11.0 | 297 8 7.5 -3.8 4 500 5370 25 21 -8.9 -19.0 | 7 12 -1.4 -11.8 5 400 6930 15 25 -6.5 -24.1 | 357 17 1.0 -16.9 6 300 8820 10 23 -4.0 -22.7 | 347 16 3.5 -15.4 7 255 9837 360 25 -0.0 -25.0 | 337 19 7.5 -17.8 8 250 9960 355 25 2.2 -24.9 | 331 20 9.7 -17.7 9 200 11370 340 19 6.5 -17.9 | 307 18 14.0 -10.6 10 150 13190 360 9 -0.0 -9.0 | 283 8 7.5 -1.8 11 100 15780 280 5 4.9 -0.9 | 243 14 12.4 6.4 12 70 18060 280 5 4.9 -0.9 | 243 14 12.4 6.4 13 50 20210 230 9 6.9 5.8 | 228 19 14.4 13.0 14 30 23500 215 21 12.0 17.2 | 219 31 19.5 24.4 15 20 26140 230 23 17.6 14.8 | 229 33 25.1 22.0 16 10 30720 270 40 40.0 -0.0 | 261 48 47.5 7.2 Wind Parameters Mean winds (0-6000m): 15.9 at 13.9 knts Storm direction: 45.9 at 10.4 knts Shear (0-3000m) pos: 1.7 neg: 0.9 tot: 2.6 10-3/s Storm rel Dir Shear (0-3000m): 95.5 deg Storm rel helicity (0-3000m) pos: 30.0 neg: -0.3 tot: 29.7 m^2/s^2 ave: 9.9 10^-3 m/s^2 rel: 0.81 Storm rel vorticity (0-3000m) horiz: 2.9 stream: 2.3 10^-3/s Energy-Hel index: 0.01 Bulk Rich Number: 1.87 Bulk Shear: 23.29 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 ------------------------------------------------------------------------------- 500 311 2 235 11| 2.8 0.0 2.8| 6.8 0.0 6.8 13.6 0.76| 3.1 2.4 1000 359 3 238 9| 2.8 0.0 2.8| 9.8 -0.3 9.5 9.5 0.57| 3.3 1.9 1500 3 4 244 8| 1.8 0.9 2.8| 14.8 -0.3 14.5 9.7 0.70| 3.1 2.2 2000 2 5 253 8| 1.4 1.4 2.8| 19.7 -0.3 19.4 9.7 0.75| 3.1 2.3 2500 1 6 262 7| 1.6 1.1 2.7| 24.7 -0.3 24.4 9.8 0.78| 2.9 2.3 3000 3 7 271 7| 1.7 0.9 2.6| 30.0 -0.3 29.7 9.9 0.81| 2.9 2.3 4000 9 10 291 6| 1.9 0.7 2.6| 41.9 -0.3 41.6 10.4 0.84| 2.8 2.3 5000 15 12 313 6| 1.7 0.7 2.4| 50.3 -1.8 48.6 9.7 0.79| 2.7 2.1 6000 16 14 329 7| 1.4 0.9 2.3| 50.3 -8.2 42.1 7.0 0.64| 2.6 1.6 Wrote GIF file: /home/apache/climate/data/raob//U4688/skewt/U4688.skewt.20251018.12.gif