UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2026011512.upa.cvt Date: 1200Z 15 JAN 26 Searching for U4688... Searching the city database file for: U4688 ... Date:1200Z 15 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 303 SFC 941 739 -30.5 -33.3 76 2.8 -30.7 120 1 246.9 246.9 246.5 247.6 0.24 2 934 793 -31.1 -34.7 71 3.6 -31.3 118 2 246.8 246.9 246.3 247.4 0.22 3 925 862 -29.7 -33.5 69 3.8 -30.0 115 3 248.9 249.0 248.3 249.6 0.24 4 887 1164 -26.5 -30.2 71 3.7 -26.8 103 6 255.3 255.3 254.0 256.2 0.35 5 850 1476 -20.3 -23.9 73 3.6 -20.8 90 9 264.9 265.0 262.3 266.7 0.65 6 834 1617 -17.5 -20.9 75 3.4 -18.1 91 10 269.3 269.4 265.8 271.7 0.87 7 800 1931 -14.1 -17.4 76 3.3 -14.8 93 11 276.1 276.3 270.9 279.6 1.22 8 709 2838 -19.1 -22.3 76 3.2 -19.7 99 16 280.3 280.5 272.9 283.0 0.90 9 700 2933 -19.1 -22.3 76 3.2 -19.7 100 17 281.3 281.5 273.5 284.1 0.91 10 662 3346 -20.5 -23.7 75 3.2 -21.1 102 17 284.3 284.4 275.0 286.9 0.85 11 654 3435 -19.5 -22.8 75 3.3 -20.1 103 17 286.4 286.6 276.3 289.3 0.93 12 550 4701 -26.3 -29.5 74 3.2 -26.8 111 18 292.9 293.0 279.0 294.8 0.60 13 500 5380 -31.9 -34.9 75 3.0 -32.2 115 19 294.1 294.2 279.3 295.4 0.39 14 400 6920 -44.9 -49.6 59 4.7 -45.1 155 21 296.6 296.7 280.0 297.0 0.10 15 300 8780 -59.9 -64.4 56 4.5 -59.9 200 33 300.9 300.9 281.7 301.0 0.02 16 293 8927 -61.3 -65.7 56 4.4 -61.3 201 33 301.0 301.0 281.8 301.0 0.02 17 250 9900 -67.1 -71.6 53 4.5 -67.1 205 31 306.3 306.3 284.0 306.3 0.01 18 239 10171 -68.9 -73.4 52 4.5 -68.9 208 29 307.6 307.6 284.4 307.6 0.01 19 232 10350 -67.7 -72.3 52 4.6 -67.7 210 28 312.0 312.0 286.1 312.1 0.01 20 215 10806 -70.3 -74.6 53 4.3 -70.3 215 25 314.8 314.8 287.1 314.9 0.01 21 214 10833 -70.3 -74.6 53 4.3 -70.3 214 25 315.3 315.3 287.2 315.3 0.01 22 200 11240 -66.5 -71.0 53 4.5 -66.5 200 29 327.4 327.4 291.0 327.5 0.01 23 156 12765 -58.7 -63.5 54 4.8 -58.8 213 24 364.8 364.8 299.7 365.0 0.05 24 150 13010 -59.1 -63.8 54 4.7 -59.2 215 23 368.3 368.3 300.3 368.5 0.05 25 115 14687 -57.7 -62.7 53 5.0 -57.9 228 19 399.9 400.0 305.2 400.3 0.07 26 100 15580 -53.3 -59.3 48 6.0 -53.7 235 17 424.7 424.8 308.3 425.4 0.13 27 70 17880 -50.1 -58.1 38 8.0 -50.9 245 23 477.2 477.3 313.3 478.5 0.21 28 50 20080 -48.7 -58.7 30 10.0 -50.0 250 31 528.7 528.8 316.9 530.5 0.28 29 46 20629 -47.9 -58.9 27 11.0 -49.5 543.4 543.5 317.8 545.4 0.29 TRP 215 10806 -70.3 -74.6 53 4.3 -70.3 215 25 314.8 314.8 287.1 314.9 0.01 WND Sounding variables and indices 1000-500 mb thick: 5077.00 m Freezing level: Surface below freezing Wetbulb zero: Below ground Precipitable water: 0.15 inches Sfc-500 mean rel hum: 74.45 % Est. max temperature: -1.40 C = 29.48 F Sfc-Lift cond lev (LCL): 897.37 mb = 1080.10 m = 3543.59 ft T: -27.39 C 700-500 lapse rate: 5.23 C/km ThetaE index: 0.16 C Layer 934.0- 925.0 mb Conv cond level (CCL): 941.00 mb = 739.10 m = 2424.83 ft Mean mixing ratio: 0.40 g/kg Conv temperature: -28.06 C = -18.50 F Cap Strength: 30.46 C Lifted Index: 30.60 C Risk: None Lifted Index @300 mb: 31.19 C Lifted Index @700 mb: 22.48 C Showalter Index: 22.63 C Risk: None Total Totals Index: 19.60 C Risk: None Vertical Totals Index: 11.60 C Cross Totals Index: 8.00 C K Index: -15.50 Risk: None Sweat Index: 37.00 Risk: None Energy Index: 6.17 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 83.31 J/kg Max Up Vert Vel: 12.91 m/s Conv Inhibition (B-): 44213.96 J/kg Cap Strength: 30.59 C Lift Cond Lev (LCL): 848.43 mb = 1489.75 m = 4887.57 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 143 at 12 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 ---------------------------------------------------------- 0 941 739 120 1 -0.9 0.5 | 325 11 6.3 -8.9 1 925 862 115 3 -2.7 1.3 | 331 9 4.4 -8.1 2 850 1476 90 9 -9.0 0.0 | 11 10 -1.8 -9.4 3 700 2933 100 17 -16.7 3.0 | 56 12 -9.6 -6.4 4 500 5380 115 19 -17.2 8.0 | 83 10 -10.1 -1.3 5 400 6920 155 21 -8.9 19.0 | 170 10 -1.7 9.7 6 300 8780 200 33 11.3 31.0 | 220 28 18.5 21.7 7 250 9900 205 31 13.1 28.1 | 227 28 20.3 18.7 8 215 10806 215 25 14.3 20.5 | 243 24 21.5 11.1 9 200 11240 200 29 9.9 27.3 | 224 25 17.1 17.9 10 150 13010 215 23 13.2 18.8 | 245 22 20.4 9.5 11 100 15580 235 17 13.9 9.8 | 269 21 21.1 0.4 12 70 17880 245 23 20.8 9.7 | 269 28 28.0 0.4 13 50 20080 250 31 29.1 10.6 | 268 36 36.3 1.3 Wind Parameters Mean winds (0-6000m): 112.5 at 15.7 knts Storm direction: 142.5 at 11.8 knts Shear (0-3000m) pos: 1.3 neg: 1.6 tot: 3.0 10-3/s Storm rel Dir Shear (0-3000m): 99.6 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: 0.90 Storm rel vorticity (0-3000m) horiz: 3.2 stream: 2.9 10^-3/s Energy-Hel index: 0.02 Bulk Rich Number: 4.66 Bulk Shear: 17.86 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 ------------------------------------------------------------------------------- 500 106 4 339 9| 0.0 5.9 5.9| 11.2 0.0 11.2 22.4 0.81| 6.1 5.0 1000 95 6 355 9| 0.0 4.9 4.9| 20.2 0.0 20.2 20.2 0.86| 5.1 4.4 1500 95 8 6 9| 1.0 3.3 4.3| 27.5 0.0 27.5 18.3 0.89| 4.4 3.9 2000 96 10 17 9| 1.5 2.5 3.9| 35.0 0.0 35.0 17.5 0.90| 4.0 3.6 2500 97 11 26 9| 1.5 2.0 3.5| 39.9 0.0 39.9 15.9 0.90| 3.6 3.2 3000 99 12 33 9| 1.3 1.6 3.0| 42.7 0.0 42.7 14.2 0.90| 3.2 2.9 4000 102 14 43 9| 1.2 1.2 2.4| 48.4 0.0 48.4 12.1 0.91| 2.6 2.4 5000 106 15 53 9| 1.2 1.0 2.2| 59.6 0.0 59.6 11.9 0.92| 2.6 2.4 6000 113 16 66 8| 1.5 0.8 2.3| 80.5 0.0 80.5 13.4 0.93| 2.9 2.8 Wrote GIF file: /home/apache/climate/data/raob//U4688/skewt/U4688.skewt.20260115.12.gif