UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025041812.upa.cvt Date: 1200Z 18 APR 25 Searching for U4641... Searching the city database file for: U4641 ... Date:1200Z 18 APR 25 Station: U4641 WMO ident: 24641 Latitude: 63.77 Longitude: 121.62 ------------------------------------------------------------------------------- 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 42 150 3 SFC 992 108 5.8 -6.2 42 12.0 1.3 150 3 279.6 280.0 274.8 286.4 2.42 2 987 149 7.2 -4.8 42 12.0 2.4 153 5 281.4 281.9 276.2 289.1 2.71 3 956 411 6.6 -9.4 31 16.0 0.8 171 16 283.4 283.7 276.2 289.1 1.96 4 925 680 4.4 -11.6 30 16.0 -1.0 190 27 283.8 284.1 276.0 288.8 1.70 5 883 1057 1.8 -12.2 35 14.0 -2.9 212 24 284.9 285.2 276.6 289.9 1.70 6 850 1363 0.0 -12.0 40 12.0 -4.0 230 21 286.1 286.5 277.4 291.4 1.79 7 703 2851 -11.5 -15.4 73 3.9 -12.6 279 15 289.4 289.7 278.8 294.3 1.64 8 700 2884 -11.7 -15.6 73 3.9 -12.8 280 15 289.5 289.8 278.8 294.4 1.62 9 641 3554 -14.7 -18.2 75 3.5 -15.6 279 18 293.5 293.8 280.4 297.9 1.42 10 637 3601 -14.9 -18.6 73 3.7 -15.8 279 18 293.8 294.1 280.5 298.1 1.38 11 500 5390 -26.7 -30.9 68 4.2 -27.3 275 25 300.5 300.6 282.4 302.4 0.58 12 489 5550 -27.7 -32.3 65 4.6 -28.3 274 26 301.2 301.3 282.5 302.9 0.52 13 400 6960 -38.7 -43.7 59 5.0 -39.0 265 31 304.7 304.7 283.5 305.4 0.20 14 300 8870 -53.7 -58.7 54 5.0 -53.8 255 40 309.7 309.7 285.2 309.8 0.05 15 287 9153 -55.9 -60.8 54 4.9 -56.0 256 41 310.5 310.5 285.5 310.6 0.04 16 250 10020 -61.5 -66.5 51 5.0 -61.6 260 44 314.6 314.6 287.0 314.7 0.02 17 244 10171 -62.1 -67.1 51 5.0 -62.1 260 42 315.9 315.9 287.4 316.0 0.02 18 243 10196 -62.1 -67.1 51 5.0 -62.1 260 42 316.3 316.3 287.5 316.4 0.02 19 227 10621 -59.3 -64.3 52 5.0 -59.4 265 40 326.8 326.8 290.8 326.9 0.03 20 218 10877 -55.5 -60.5 54 5.0 -55.6 268 39 336.5 336.5 293.5 336.7 0.05 21 200 11430 -53.5 -58.5 54 5.0 -53.7 275 36 348.0 348.1 296.3 348.4 0.07 22 150 13290 -50.3 -60.3 30 10.0 -50.7 260 25 383.4 383.4 302.8 383.8 0.08 23 148 13378 -50.1 -60.1 30 10.0 -50.5 260 25 385.2 385.2 303.1 385.6 0.08 24 123 14581 -53.3 -66.3 19 13.0 -53.7 258 24 400.3 400.3 305.3 400.5 0.04 25 100 15920 -52.3 -69.3 11 17.0 -52.9 255 23 426.7 426.7 308.5 426.9 0.03 26 85 16970 -51.3 -70.3 9 19.0 -52.2 262 21 449.0 449.0 310.8 449.2 0.03 27 77 17607 -53.7 -73.7 7 20.0 -54.5 266 20 456.9 456.9 311.5 457.0 0.02 28 70 18220 -52.1 -73.1 6 21.0 -53.1 270 19 472.9 472.9 312.9 473.1 0.03 29 61 19113 -51.1 -73.1 6 22.0 -52.3 494.1 494.1 314.5 494.3 0.03 TRP 244 10171 -62.1 -67.1 51 5.0 -62.1 260 42 315.9 315.9 287.4 316.0 0.02 WND Sounding variables and indices 1000-500 mb thick: 5348.00 m Freezing level: 850.00 mb = 1363.00 m = 4471.73 ft Wetbulb zero: 942.66 mb = 525.58 m = 1724.32 ft Precipitable water: 0.33 inches Sfc-500 mean rel hum: 58.87 % Est. max temperature: 12.51 C = 54.52 F Sfc-Lift cond lev (LCL): 824.03 mb = 1606.19 m = 5269.59 ft T: -1.88 C 700-500 lapse rate: 5.99 C/km ThetaE index: 0.30 C Layer 956.0- 883.0 mb Conv cond level (CCL): 652.29 mb = 3421.04 m = 11223.75 ft Mean mixing ratio: 1.97 g/kg Conv temperature: 18.90 C = 66.01 F Cap Strength: 6.99 C Lifted Index: 10.25 C Risk: None Lifted Index @300 mb: 14.66 C Lifted Index @700 mb: 4.57 C Showalter Index: 8.44 C Risk: None Total Totals Index: 41.40 C Risk: None Vertical Totals Index: 26.70 C Cross Totals Index: 14.70 C K Index: 10.80 Risk: None Sweat Index: 180.39 Risk: None Energy Index: 2.26 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 12.44 J/kg Max Up Vert Vel: 4.99 m/s Conv Inhibition (B-): 25290.74 J/kg Cap Strength: 10.02 C Lift Cond Lev (LCL): 747.87 mb = 2366.27 m = 7763.25 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 288 at 15 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 ---------------------------------------------------------- 0 992 108 150 3 -1.5 2.6 | 114 18 -16.0 7.2 1 925 680 190 27 4.7 26.6 | 163 33 -9.8 31.2 2 850 1363 230 21 16.1 13.5 | 185 18 1.6 18.1 3 700 2884 280 15 14.8 -2.6 | 188 2 0.3 2.0 4 500 5390 275 25 24.9 -2.2 | 257 11 10.4 2.5 5 400 6960 265 31 30.9 2.7 | 246 18 16.4 7.3 6 300 8870 255 40 38.6 10.4 | 238 28 24.2 15.0 7 250 10020 260 44 43.3 7.6 | 247 31 28.9 12.3 8 244 10171 260 42 41.4 7.3 | 246 29 26.9 11.9 9 200 11430 275 36 35.9 -3.1 | 266 21 21.4 1.5 10 150 13290 260 25 24.6 4.3 | 228 14 10.1 9.0 11 100 15920 255 23 22.2 6.0 | 216 13 7.7 10.6 12 70 18220 270 19 19.0 -0.0 | 224 6 4.5 4.6 Wind Parameters Mean winds (0-6000m): 257.8 at 20.3 knts Storm direction: 287.8 at 15.2 knts Shear (0-3000m) pos: 3.1 neg: 0.0 tot: 3.1 10-3/s Storm rel Dir Shear (0-3000m): 96.4 deg Storm rel helicity (0-3000m) pos: 231.8 neg: -0.4 tot: 231.3 m^2/s^2 ave: 77.1 10^-3 m/s^2 rel: 0.57 Storm rel vorticity (0-3000m) horiz: 10.5 stream: 6.1 10^-3/s Energy-Hel index: 0.02 Bulk Rich Number: 0.22 Bulk Shear: 55.91 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 ------------------------------------------------------------------------------- 500 186 13 144 22| 22.2 0.0 22.2|120.1 0.0 120.1 240.2 0.80| 23.4 18.6 1000 195 19 158 25| 11.4 0.0 11.4|202.7 0.0 202.7 202.7 0.76| 19.4 14.8 1500 206 20 166 23| 6.9 0.0 6.9|224.3 0.0 224.3 149.5 0.70| 16.1 11.3 2000 215 20 172 21| 4.9 0.0 4.9|230.3 0.0 230.3 115.1 0.66| 13.5 8.9 2500 223 19 176 19| 3.7 0.0 3.7|231.3 -0.0 231.3 92.5 0.60| 11.9 7.2 3000 230 19 179 17| 3.1 0.0 3.1|231.8 -0.4 231.3 77.1 0.57| 10.5 6.1 4000 243 18 188 13| 2.3 0.5 2.8|233.9 -0.4 233.4 58.4 0.57| 8.4 4.8 5000 252 19 200 11| 1.8 0.8 2.7|235.6 -0.4 235.1 47.0 0.55| 7.2 4.0 6000 258 20 211 10| 1.5 1.1 2.6|235.9 -4.0 231.8 38.6 0.50| 6.4 3.2 Wrote GIF file: /home/apache/climate/data/raob//U4641/skewt/U4641.skewt.20250418.12.gif