UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2026011800.upa.cvt Date: 0000Z 18 JAN 26 Searching for U4688... Searching the city database file for: U4688 ... Date:0000Z 18 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 337 SFC 943 742 -39.7 -42.2 77 2.5 -39.8 260 1 237.4 237.4 237.2 237.7 0.10 2 925 876 -36.9 -39.8 74 2.9 -37.0 265 1 241.6 241.6 241.2 241.9 0.13 3 914 959 -35.3 -38.9 70 3.6 -35.4 267 1 244.0 244.1 243.6 244.4 0.14 4 887 1168 -34.3 -38.0 69 3.7 -34.5 272 2 247.2 247.2 246.5 247.6 0.16 5 850 1470 -28.5 -32.0 72 3.5 -28.8 280 3 256.3 256.3 254.8 257.2 0.31 6 753 2362 -13.7 -16.8 77 3.1 -14.5 280 5 281.4 281.6 274.2 285.4 1.36 7 726 2640 -12.9 -15.7 79 2.8 -13.6 280 6 285.2 285.5 276.6 289.8 1.55 8 711 2798 -14.1 -17.2 77 3.1 -14.9 280 7 285.6 285.8 276.5 289.8 1.39 9 700 2916 -15.1 -18.7 74 3.6 -15.9 280 7 285.8 286.0 276.4 289.5 1.25 10 566 4487 -26.1 -40.1 26 14.0 -27.4 264 13 290.7 290.8 277.4 291.4 0.21 11 541 4811 -28.9 -43.9 22 15.0 -30.0 261 15 291.2 291.2 277.5 291.7 0.14 12 500 5370 -33.1 -48.1 21 15.0 -34.0 255 17 292.7 292.7 278.2 293.0 0.10 13 400 6900 -45.3 -59.3 19 14.0 -45.6 255 21 296.1 296.1 279.7 296.2 0.03 14 341 7939 -54.1 -65.1 25 11.0 -54.2 244 17 298.0 298.0 280.5 298.0 0.02 15 300 8750 -58.3 -68.3 27 10.0 -58.4 235 13 303.2 303.2 282.7 303.2 0.01 16 250 9880 -66.1 -76.1 23 10.0 -66.1 210 19 307.8 307.8 284.5 307.8 0.00 17 249 9904 -66.3 -76.3 23 10.0 -66.4 210 19 307.9 307.9 284.5 307.9 0.00 18 248 9928 -66.5 -76.5 23 10.0 -66.5 210 19 307.9 307.9 284.5 307.9 0.00 19 220 10649 -67.1 -77.1 23 10.0 -67.1 216 15 317.7 317.7 288.0 317.7 0.00 20 200 11230 -61.7 -71.7 25 10.0 -61.8 220 11 335.1 335.1 293.1 335.1 0.01 21 189 11585 -57.9 -67.9 27 10.0 -58.0 211 12 346.6 346.6 295.9 346.7 0.02 22 180 11893 -59.1 -69.1 26 10.0 -59.2 204 12 349.5 349.6 296.5 349.6 0.02 23 172 12183 -53.3 -63.3 29 10.0 -53.6 196 13 363.7 363.7 299.4 363.9 0.04 24 150 13070 -51.7 -63.7 22 12.0 -52.1 175 15 381.0 381.0 302.5 381.2 0.05 25 103 15543 -46.7 -60.7 19 14.0 -47.7 189 22 433.8 433.8 309.3 434.4 0.10 26 100 15740 -46.5 -60.5 19 14.0 -47.6 190 23 437.9 437.9 309.7 438.5 0.11 27 70 18093 -49.3 -65.3 14 16.0 -50.5 478.9 478.9 313.4 479.4 0.08 TRP 248 9928 -66.5 -76.5 23 10.0 -66.5 210 19 307.9 307.9 284.5 307.9 0.00 WND Sounding variables and indices 1000-500 mb thick: 5033.00 m Freezing level: Surface below freezing Wetbulb zero: Below ground Precipitable water: 0.12 inches Sfc-500 mean rel hum: 55.91 % Est. max temperature: -7.16 C = 19.10 F Sfc-Lift cond lev (LCL): 902.76 mb = 1045.44 m = 3429.89 ft T: -34.89 C 700-500 lapse rate: 7.33 C/km ThetaE index: 0.29 C Layer 711.0- 566.0 mb Conv cond level (CCL): 943.00 mb = 742.20 m = 2435.00 ft Mean mixing ratio: 0.19 g/kg Conv temperature: -35.91 C = -32.65 F Cap Strength: 36.40 C Lifted Index: 36.69 C Risk: None Lifted Index @300 mb: 39.12 C Lifted Index @700 mb: 34.27 C Showalter Index: 29.17 C Risk: None Total Totals Index: 5.70 C Risk: None Vertical Totals Index: 4.60 C Cross Totals Index: 1.10 C K Index: -31.00 Risk: None Sweat Index: 23.00 Risk: None Energy Index: 7.87 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 74.36 J/kg Max Up Vert Vel: 12.19 m/s Conv Inhibition (B-): 40393.53 J/kg Cap Strength: 36.70 C Lift Cond Lev (LCL): 850.31 mb = 1467.39 m = 4814.21 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 291 at 8 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 ---------------------------------------------------------- 0 943 742 260 1 1.0 0.2 | 116 7 -6.5 3.1 1 925 876 265 1 1.0 0.1 | 115 7 -6.5 3.0 2 850 1470 280 3 3.0 -0.5 | 118 5 -4.5 2.4 3 700 2916 280 7 6.9 -1.2 | 161 2 -0.6 1.7 4 500 5370 255 17 16.4 4.4 | 231 12 8.9 7.3 5 400 6900 255 21 20.3 5.4 | 237 15 12.8 8.4 6 300 8750 235 13 10.6 7.5 | 197 11 3.2 10.4 7 250 9880 210 19 9.5 16.5 | 186 19 2.0 19.4 8 248 9928 210 19 9.5 16.5 | 186 19 2.0 19.4 9 200 11230 220 11 7.1 8.4 | 178 11 -0.4 11.4 10 150 13070 175 15 -1.3 14.9 | 154 20 -8.8 17.9 11 100 15740 190 23 4.0 22.7 | 172 26 -3.5 25.6 Wind Parameters Mean winds (0-6000m): 261.4 at 10.7 knts Storm direction: 291.4 at 8.0 knts Shear (0-3000m) pos: 0.5 neg: 1.1 tot: 1.6 10-3/s Storm rel Dir Shear (0-3000m): 112.0 deg Storm rel helicity (0-3000m) pos: 3.8 neg: -0.1 tot: 3.7 m^2/s^2 ave: 1.2 10^-3 m/s^2 rel: 0.50 Storm rel vorticity (0-3000m) horiz: 1.7 stream: 0.8 10^-3/s Energy-Hel index: 0.00 Bulk Rich Number: 6.53 Bulk Shear: 11.39 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 ------------------------------------------------------------------------------- 500 270 1 116 7| 1.3 0.0 1.3| 0.5 -0.1 0.4 0.9 0.19| 1.4 0.3 1000 277 2 117 6| 1.5 0.0 1.5| 0.9 -0.1 0.8 0.8 0.18| 1.5 0.3 1500 278 3 119 5| 1.0 0.5 1.4| 1.5 -0.1 1.4 0.9 0.26| 1.5 0.4 2000 279 4 121 5| 0.7 0.7 1.4| 2.1 -0.1 1.9 1.0 0.35| 1.5 0.5 2500 279 4 125 4| 0.6 0.9 1.5| 2.9 -0.1 2.8 1.1 0.49| 1.6 0.8 3000 277 5 133 3| 0.5 1.1 1.6| 3.8 -0.1 3.7 1.2 0.50| 1.7 0.8 4000 271 7 169 3| 0.4 1.4 1.8| 4.5 -0.2 4.3 1.1 0.37| 1.8 0.7 5000 264 9 200 4| 0.3 1.5 1.8| 5.6 -1.3 4.3 0.9 0.29| 1.9 0.5 6000 261 11 214 5| 0.2 1.5 1.7| 8.9 -1.3 7.6 1.3 0.30| 1.8 0.5 Wrote GIF file: /home/apache/climate/data/raob//U4688/skewt/U4688.skewt.20260118.00.gif