UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2026011900.upa.cvt Date: 0000Z 19 JAN 26 Searching for U4688... Searching the city database file for: U4688 ... Date:0000Z 19 JAN 26 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 336 SFC 941 741 -45.7 -48.5 73 2.8 -45.7 260 1 231.4 231.4 231.3 231.6 0.05 2 925 857 -40.5 -44.7 64 4.2 -40.6 215 1 237.9 237.9 237.6 238.1 0.08 3 921 887 -39.9 -44.2 63 4.3 -40.0 222 1 238.8 238.8 238.5 239.0 0.08 4 871 1272 -34.9 -39.0 66 4.1 -35.1 318 0 247.8 247.9 247.1 248.3 0.15 5 860 1362 -30.5 -34.5 68 4.0 -30.7 340 0 253.3 253.4 252.1 254.0 0.24 6 854 1412 -23.3 -27.4 69 4.1 -23.8 352 0 261.4 261.5 259.2 262.7 0.47 7 850 1447 -21.3 -25.2 71 3.9 -21.8 0 0 263.8 263.9 261.3 265.5 0.58 8 849 1456 -21.1 -24.9 71 3.8 -21.6 360 0 264.1 264.2 261.6 265.8 0.60 9 778 2109 -15.3 -18.2 78 2.9 -15.9 351 7 277.0 277.2 271.4 280.4 1.17 10 722 2671 -16.9 -19.5 80 2.6 -17.4 343 13 281.3 281.5 273.8 284.6 1.13 11 700 2904 -16.7 -21.7 65 5.0 -17.7 340 15 284.0 284.2 275.0 286.9 0.96 12 682 3099 -17.5 -27.5 41 10.0 -19.1 339 16 285.2 285.3 275.1 287.0 0.59 13 654 3412 -19.7 -34.7 25 15.0 -21.6 337 17 286.2 286.2 275.2 287.2 0.31 14 582 4268 -25.1 -46.1 12 21.0 -26.8 332 22 289.6 289.6 276.6 289.9 0.11 15 500 5350 -34.7 -53.7 13 19.0 -35.5 325 27 290.7 290.7 277.1 290.9 0.05 16 400 6860 -46.9 -61.9 16 15.0 -47.2 320 36 294.0 294.0 278.7 294.1 0.02 17 367 7426 -51.5 -64.5 20 13.0 -51.7 320 34 295.2 295.2 279.2 295.3 0.02 18 300 8710 -60.5 -72.5 19 12.0 -60.6 320 29 300.1 300.1 281.4 300.1 0.01 19 258 9630 -66.1 -78.1 17 12.0 -66.1 325 13 305.0 305.0 283.4 305.0 0.00 20 250 9820 -66.1 -78.1 17 12.0 -66.1 325 13 307.8 307.8 284.5 307.8 0.00 21 245 9943 -66.5 -78.5 17 12.0 -66.5 325 12 309.0 309.0 284.9 309.0 0.00 22 233 10251 -63.3 -75.3 18 12.0 -63.4 323 10 318.3 318.3 288.2 318.3 0.01 23 200 11200 -60.3 -72.3 19 12.0 -60.4 320 3 337.3 337.3 293.6 337.3 0.01 24 150 13030 -52.9 -67.9 15 15.0 -53.3 140 7 378.9 378.9 302.1 379.1 0.03 25 133 13809 -49.5 -65.5 14 16.0 -50.1 147 10 398.2 398.3 305.0 398.5 0.04 26 100 15680 -47.7 -67.7 8 20.0 -48.8 165 17 435.6 435.6 309.4 435.8 0.04 27 86 16673 -46.7 -68.7 6 22.0 -48.1 167 20 456.8 456.8 311.5 457.0 0.04 28 73 17747 -50.3 -73.3 5 23.0 -51.4 169 24 471.1 471.1 312.7 471.2 0.03 29 70 18020 -49.7 -73.7 4 24.0 -51.0 170 25 478.1 478.1 313.3 478.2 0.03 30 50 20210 -52.1 -76.1 4 24.0 -53.4 175 46 520.7 520.7 316.4 520.9 0.02 31 30 23490 -54.9 -78.9 4 24.0 -56.5 175 48 595.0 595.0 320.4 595.2 0.03 32 29 23707 -55.5 -79.5 3 24.0 -57.0 176 48 599.1 599.1 320.6 599.3 0.02 33 20 26090 -54.5 -78.5 4 24.0 -56.8 190 52 669.4 669.4 323.4 669.7 0.04 34 19 26419 -54.3 -78.3 4 24.0 -56.7 175 60 679.8 679.9 323.8 680.2 0.05 35 18 26765 -54.1 -78.1 4 24.0 -56.6 691.1 691.1 324.1 691.5 0.05 TRP 258 9630 -66.1 -78.1 17 12.0 -66.1 325 13 305.0 305.0 283.4 305.0 0.00 WND 19 26419 -54.3 -78.3 4 24.0 -56.7 175 60 679.8 679.9 323.8 680.2 0.05 Sounding variables and indices 1000-500 mb thick: 5014.00 m Freezing level: Surface below freezing Wetbulb zero: Below ground Precipitable water: 0.09 inches Sfc-500 mean rel hum: 44.91 % Est. max temperature: -3.33 C = 26.01 F Sfc-Lift cond lev (LCL): 894.94 mb = 1084.94 m = 3559.48 ft T: -37.33 C 700-500 lapse rate: 7.36 C/km ThetaE index: 0.00 C Layer 941.0- -0.2 mb Conv cond level (CCL): 941.00 mb = 741.38 m = 2432.31 ft Mean mixing ratio: 0.19 g/kg Conv temperature: -35.62 C = -32.12 F Cap Strength: 36.64 C Lifted Index: 36.00 C Risk: None Lifted Index @300 mb: 37.68 C Lifted Index @700 mb: 33.67 C Showalter Index: 20.83 C Risk: None Total Totals Index: 22.90 C Risk: None Vertical Totals Index: 13.40 C Cross Totals Index: 9.50 C K Index: -16.80 Risk: None Sweat Index: 27.00 Risk: None Energy Index: 5.57 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 113.59 J/kg Max Up Vert Vel: 15.07 m/s Conv Inhibition (B-): 71102.49 J/kg Cap Strength: 36.60 C Lift Cond Lev (LCL): 870.56 mb = 1275.89 m = 4185.95 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 358 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 ---------------------------------------------------------- 0 941 741 260 1 1.0 0.2 | 182 14 0.4 13.6 1 925 857 215 1 0.6 0.8 | 180 14 0.0 14.2 2 850 1447 0 0 -0.0 -0.0 | 178 13 -0.5 13.4 3 700 2904 340 15 5.1 -14.1 | 279 5 4.6 -0.7 4 500 5350 325 27 15.5 -22.1 | 300 17 14.9 -8.7 5 400 6860 320 36 23.1 -27.6 | 302 27 22.6 -14.2 6 300 8710 320 29 18.6 -22.2 | 296 20 18.1 -8.8 7 258 9630 325 13 7.5 -10.6 | 248 7 6.9 2.7 8 250 9820 325 13 7.5 -10.6 | 248 7 6.9 2.7 9 200 11200 320 3 1.9 -2.3 | 187 11 1.4 11.1 10 150 13030 140 7 -4.5 5.4 | 165 19 -5.0 18.7 11 100 15680 165 17 -4.4 16.4 | 171 30 -4.9 29.8 12 70 18020 170 25 -4.3 24.6 | 173 38 -4.9 38.0 13 50 20210 175 46 -4.0 45.8 | 176 59 -4.6 59.2 14 30 23490 175 48 -4.2 47.8 | 176 61 -4.7 61.2 15 20 26090 190 52 9.0 51.2 | 187 65 8.5 64.6 Wind Parameters Mean winds (0-6000m): 327.7 at 17.9 knts Storm direction: 357.7 at 13.4 knts Shear (0-3000m) pos: 0.6 neg: 2.8 tot: 3.4 10-3/s Storm rel Dir Shear (0-3000m): 115.5 deg Storm rel helicity (0-3000m) pos: 12.7 neg: -3.8 tot: 8.9 m^2/s^2 ave: 3.0 10^-3 m/s^2 rel: 0.39 Storm rel vorticity (0-3000m) horiz: 3.8 stream: 1.5 10^-3/s Energy-Hel index: 0.01 Bulk Rich Number: 2.68 Bulk Shear: 42.37 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 ------------------------------------------------------------------------------- 500 236 1 180 14| 0.8 0.0 0.8| 0.2 -2.8 -2.6 -5.2 -0.39| 1.9 -0.7 1000 286 1 181 13| 1.7 0.0 1.7| 0.5 -3.8 -3.2 -3.2 -0.17| 2.7 -0.5 1500 342 2 181 11| 1.1 1.8 2.9| 3.5 -3.8 -0.3 -0.2 0.06| 3.6 0.2 2000 340 4 186 9| 0.8 2.7 3.5| 8.0 -3.8 4.3 2.1 0.33| 4.1 1.3 2500 338 6 194 8| 0.7 2.8 3.5| 10.9 -3.8 7.2 2.9 0.39| 4.0 1.6 3000 338 8 204 6| 0.6 2.8 3.4| 12.7 -3.8 8.9 3.0 0.39| 3.8 1.5 4000 334 12 237 5| 0.4 2.7 3.2| 14.4 -3.8 10.6 2.7 0.33| 3.5 1.2 5000 331 15 265 7| 0.3 2.8 3.1| 16.0 -4.5 11.6 2.3 0.28| 3.4 1.0 6000 328 18 281 9| 0.3 2.8 3.1| 17.7 -4.5 13.2 2.2 0.24| 3.4 0.8 Wrote GIF file: /home/apache/climate/data/raob//U4688/skewt/U4688.skewt.20260119.00.gif