UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2026010712.upa.cvt Date: 1200Z 7 JAN 26 Searching for U4688... Searching the city database file for: U4688 ... Date:1200Z 7 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 142 1 925 697 60 1 SFC 919 743 -32.7 -35.6 75 2.9 -32.9 60 1 246.3 246.4 245.8 246.9 0.20 3 884 1016 -33.7 -36.8 74 3.1 -33.8 105 3 248.0 248.1 247.3 248.6 0.18 4 850 1294 -29.7 -33.0 73 3.3 -29.9 150 5 255.0 255.1 253.7 255.8 0.28 5 812 1623 -24.3 -27.9 72 3.6 -24.7 156 7 264.1 264.2 261.3 265.5 0.47 6 748 2215 -29.1 -32.5 72 3.4 -29.4 166 12 265.2 265.2 261.9 266.2 0.33 7 720 2491 -24.5 -28.1 72 3.6 -24.9 171 14 273.1 273.2 267.8 274.7 0.52 8 700 2695 -25.7 -29.2 72 3.5 -26.1 175 15 274.0 274.1 268.3 275.5 0.49 9 606 3727 -31.5 -34.7 73 3.2 -31.8 177 12 278.9 278.9 271.1 279.9 0.33 10 500 5060 -40.7 -43.9 71 3.2 -40.8 180 7 283.4 283.4 273.4 283.9 0.16 11 400 6540 -49.9 -53.3 67 3.4 -50.0 180 5 290.1 290.1 276.9 290.4 0.07 12 347 7461 -56.3 -59.6 66 3.3 -56.3 187 6 293.5 293.5 278.4 293.6 0.04 13 300 8380 -60.7 -64.1 64 3.4 -60.7 195 7 299.8 299.8 281.3 299.9 0.02 14 295 8485 -60.7 -64.1 64 3.4 -60.7 194 8 301.2 301.2 281.9 301.3 0.02 15 250 9530 -55.5 -59.0 65 3.5 -55.6 185 15 323.6 323.6 289.9 323.8 0.05 16 214 10524 -52.5 -56.1 65 3.6 -52.6 195 15 342.9 342.9 295.1 343.3 0.09 17 200 10960 -52.7 -56.4 64 3.7 -52.8 200 15 349.3 349.3 296.5 349.7 0.09 18 150 12830 -50.1 -53.9 64 3.8 -50.3 215 19 383.7 383.8 302.9 384.5 0.17 19 132 13665 -49.9 -53.7 64 3.8 -50.1 223 23 398.4 398.4 305.1 399.3 0.19 20 100 15500 -44.7 -48.7 64 4.0 -45.3 240 31 441.4 441.5 310.3 443.8 0.46 21 89 16279 -45.1 -49.0 65 3.9 -45.7 240 37 455.5 455.7 311.6 458.2 0.50 22 79 17083 -40.7 -44.6 66 3.9 -41.6 240 42 480.4 480.7 313.9 485.6 0.91 23 72 17710 -43.9 -47.9 64 4.0 -44.7 240 47 486.5 486.7 314.2 490.6 0.70 24 70 17900 -42.5 -46.5 65 4.0 -43.4 240 48 493.5 493.7 314.8 498.3 0.84 25 50 20180 -41.3 -45.1 67 3.8 -42.5 250 52 546.1 546.6 318.3 554.9 1.37 26 37 22232 -39.3 -43.4 65 4.1 -40.9 253 61 600.4 601.2 321.3 616.1 2.23 27 30 23660 -41.9 -45.7 66 3.8 -43.4 255 68 630.4 631.2 322.6 646.4 2.14 28 28 24126 -42.9 -46.7 66 3.8 -44.3 255 69 640.3 641.1 322.9 656.0 2.06 29 20 26370 -47.5 -51.4 64 3.9 -48.9 260 68 690.8 691.5 324.6 704.8 1.68 30 15 28255 -51.5 -55.6 61 4.1 -52.9 736.7 737.3 325.9 749.0 1.36 TRP 300 8380 -60.7 -64.1 64 3.4 -60.7 195 7 299.8 299.8 281.3 299.9 0.02 WND 28 24126 -42.9 -46.7 66 3.8 -44.3 255 69 640.3 641.1 322.9 656.0 2.06 Sounding variables and indices 1000-500 mb thick: 4918.00 m Freezing level: Surface below freezing Wetbulb zero: Below ground Precipitable water: 0.12 inches Sfc-500 mean rel hum: 72.60 % Est. max temperature: -14.64 C = 5.65 F Sfc-Lift cond lev (LCL): 874.63 mb = 1091.73 m = 3581.75 ft T: -32.61 C 700-500 lapse rate: 6.34 C/km ThetaE index: 0.00 C Layer 919.0-36310270083072.0 mb Conv cond level (CCL): 901.50 mb = 878.24 m = 2881.32 ft Mean mixing ratio: 0.26 g/kg Conv temperature: -31.87 C = -25.37 F Cap Strength: 22.45 C Lifted Index: 24.91 C Risk: None Lifted Index @300 mb: 33.09 C Lifted Index @700 mb: 19.16 C Showalter Index: 22.68 C Risk: None Total Totals Index: 18.70 C Risk: None Vertical Totals Index: 11.00 C Cross Totals Index: 7.70 C K Index: -25.50 Risk: None Sweat Index: 17.00 Risk: None Energy Index: 6.07 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 65.79 J/kg Max Up Vert Vel: 11.47 m/s Conv Inhibition (B-): 76512.27 J/kg Cap Strength: 24.70 C Lift Cond Lev (LCL): 827.69 mb = 1485.57 m = 4873.84 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 204 at 6 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 ---------------------------------------------------------- 0 919 743 60 1 -0.9 -0.5 | 29 7 -3.5 -6.4 1 850 1294 150 5 -2.5 4.3 | 74 5 -5.1 -1.5 2 700 2695 175 15 -1.3 14.9 | 157 10 -3.9 9.1 3 500 5060 180 7 0.0 7.0 | 114 3 -2.6 1.1 4 400 6540 180 5 0.0 5.0 | 72 3 -2.6 -0.9 5 300 8380 195 7 1.8 6.8 | 138 1 -0.8 0.9 6 250 9530 185 15 1.3 14.9 | 172 9 -1.3 9.1 7 200 10960 200 15 5.1 14.1 | 197 9 2.5 8.2 8 150 12830 215 19 10.9 15.6 | 220 13 8.3 9.7 9 100 15500 240 31 26.8 15.5 | 248 26 24.2 9.6 10 70 17900 240 48 41.6 24.0 | 245 43 38.9 18.1 11 50 20180 250 52 48.9 17.8 | 256 48 46.2 11.9 12 30 23660 255 68 65.7 17.6 | 259 64 63.0 11.7 13 28 24126 255 69 66.6 17.9 | 259 65 64.0 12.0 14 20 26370 260 68 67.0 11.8 | 265 65 64.3 6.0 Wind Parameters Mean winds (0-6000m): 174.3 at 8.6 knts Storm direction: 204.3 at 6.4 knts Shear (0-3000m) pos: 2.0 neg: 0.0 tot: 2.0 10-3/s Storm rel Dir Shear (0-3000m): 121.3 deg Storm rel helicity (0-3000m) pos: 28.1 neg: -1.7 tot: 26.4 m^2/s^2 ave: 8.8 10^-3 m/s^2 rel: 0.70 Storm rel vorticity (0-3000m) horiz: 3.5 stream: 2.5 10^-3/s Energy-Hel index: 0.01 Bulk Rich Number: 11.60 Bulk Shear: 5.67 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 ------------------------------------------------------------------------------- 500 137 3 50 6| 4.7 0.0 4.7| 9.3 0.0 9.3 18.6 0.89| 5.6 5.0 1000 149 5 69 5| 4.3 0.0 4.3| 15.0 0.0 15.0 15.0 0.92| 4.9 4.5 1500 158 6 90 5| 4.2 0.0 4.2| 21.2 0.0 21.2 14.1 0.91| 4.6 4.2 2000 166 8 114 5| 3.9 0.0 3.9| 28.1 0.0 28.1 14.1 0.89| 4.4 3.9 2500 169 9 126 5| 2.8 0.0 2.8| 28.1 -0.8 27.3 10.9 0.79| 3.9 3.1 3000 171 10 132 6| 2.0 0.0 2.0| 28.1 -1.7 26.4 8.8 0.70| 3.5 2.5 4000 172 10 135 6| 1.1 0.0 1.1| 28.1 -3.9 24.2 6.1 0.53| 3.1 1.6 5000 174 9 132 5| 0.8 0.1 0.8| 28.1 -5.2 22.9 4.6 0.42| 2.7 1.1 6000 174 9 127 4| 0.6 0.1 0.7| 28.2 -6.0 22.2 3.7 0.37| 2.3 0.9 Wrote GIF file: /home/apache/climate/data/raob//U4688/skewt/U4688.skewt.20260107.12.gif