UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025122412.upa.cvt Date: 1200Z 24 DEC 25 Searching for U4641... Searching the city database file for: U4641 ... Date:1200Z 24 DEC 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 ------------------------------------------------------------------------------- SFC 1023 109 -40.5 -44.5 65 4.0 -40.6 200 1 231.1 231.2 231.1 231.3 0.07 1 1000 264 -40.1 -45.0 59 4.9 -40.2 245 5 233.1 233.1 232.9 233.2 0.07 2 984 374 -40.9 -45.9 58 5.0 -41.0 250 5 233.3 233.3 233.2 233.5 0.06 3 980 402 -40.3 -45.2 59 4.9 -40.4 251 6 234.2 234.2 234.0 234.4 0.07 4 972 458 -34.1 -39.1 61 5.0 -34.3 254 6 241.0 241.0 240.7 241.4 0.13 5 925 810 -27.7 -32.7 62 5.0 -28.0 270 7 251.0 251.0 250.1 251.7 0.26 6 922 833 -27.7 -32.7 62 5.0 -28.0 271 7 251.2 251.3 250.3 252.0 0.27 7 850 1418 -28.1 -32.5 66 4.4 -28.5 305 5 256.7 256.8 255.1 257.5 0.29 8 835 1546 -28.1 -32.4 67 4.3 -28.5 308 5 258.0 258.1 256.2 258.9 0.30 9 755 2261 -32.3 -36.3 67 4.0 -32.6 326 6 261.0 261.0 258.4 261.7 0.23 10 701 2783 -33.5 -37.5 67 4.0 -33.7 340 7 265.3 265.3 261.7 265.9 0.22 11 700 2793 -33.5 -37.5 67 4.0 -33.7 340 7 265.4 265.4 261.7 266.0 0.22 12 541 4570 -41.5 -45.2 67 3.7 -41.6 7 16 276.1 276.2 269.0 276.5 0.12 13 500 5100 -45.7 -49.4 66 3.7 -45.8 15 19 277.3 277.3 269.7 277.6 0.08 14 403 6502 -55.1 -58.9 63 3.8 -55.2 20 21 282.8 282.8 272.8 282.9 0.03 15 400 6550 -55.1 -58.9 63 3.8 -55.2 20 21 283.4 283.4 273.2 283.5 0.03 16 342 7546 -58.5 -62.4 61 3.9 -58.5 14 20 291.7 291.7 277.6 291.8 0.03 17 330 7772 -58.1 -62.1 60 4.0 -58.2 12 19 295.3 295.3 279.3 295.4 0.03 18 311 8145 -60.3 -64.1 61 3.8 -60.3 10 19 297.3 297.3 280.1 297.3 0.02 19 300 8370 -59.7 -63.6 60 3.9 -59.7 5 19 301.2 301.2 281.9 301.3 0.02 20 267 9092 -60.5 -64.3 61 3.8 -60.6 11 20 310.2 310.2 285.4 310.3 0.03 21 250 9500 -59.7 -63.7 59 4.0 -59.7 15 21 317.3 317.3 287.9 317.4 0.03 22 214 10481 -57.3 -61.4 60 4.1 -57.4 354 18 335.5 335.5 293.2 335.7 0.05 23 200 10910 -57.3 -61.4 60 4.1 -57.4 345 17 342.0 342.0 294.8 342.2 0.05 24 150 12720 -57.3 -61.8 56 4.5 -57.4 355 3 371.4 371.4 300.8 371.6 0.06 25 100 15280 -57.3 -63.3 46 6.0 -57.5 230 9 417.0 417.0 307.4 417.4 0.08 26 70 17520 -59.9 -66.9 40 7.0 -60.2 230 17 456.2 456.3 311.5 456.6 0.07 27 58 18692 -59.9 -67.9 34 8.0 -60.2 224 23 481.4 481.5 313.6 481.9 0.07 28 50 19620 -58.3 -66.3 35 8.0 -58.7 220 27 506.1 506.1 315.4 506.7 0.10 29 41 20876 -56.3 -65.3 31 9.0 -57.1 218 36 540.6 540.7 317.6 541.6 0.14 30 34 22082 -50.5 -60.5 30 10.0 -52.1 216 44 585.6 585.7 320.0 588.0 0.33 31 30 22900 -50.1 -61.1 26 11.0 -52.0 215 50 608.1 608.2 321.1 610.6 0.34 32 29 23122 -50.7 -61.7 26 11.0 -52.5 216 52 612.3 612.5 321.3 614.8 0.33 33 27 23595 -45.9 -58.9 22 13.0 -48.9 218 55 638.5 638.7 322.4 642.4 0.50 34 21 25272 -46.1 -60.1 19 14.0 -49.7 224 68 685.4 685.7 324.1 690.1 0.55 35 20 25600 -42.7 -58.7 16 16.0 -47.7 225 71 705.5 705.8 324.8 711.5 0.70 36 17 26705 -40.1 -58.1 13 18.0 -46.7 224 73 747.4 747.8 326.1 755.5 0.88 37 14 28026 -41.9 -61.9 10 20.0 -48.8 222 75 784.0 784.3 327.0 790.4 0.66 38 13 28534 -37.1 -59.1 8 22.0 -46.5 222 76 817.4 817.9 327.9 827.7 1.02 39 11 29688 -37.9 -60.9 7 23.0 -47.8 221 78 854.5 855.0 328.7 864.7 0.96 40 10 30350 -34.3 -60.3 5 26.0 -46.7 220 79 891.5 892.1 329.5 904.2 1.14 41 9.2 30931 -36.5 -63.5 4 27.0 -48.4 904.6 905.1 329.7 913.8 0.81 42 9.0 31083 -35.2 -62.7 4 27.5 -47.9 220 79 915.3 915.8 329.9 925.8 0.92 43 8.8 31240 -33.9 -61.9 4 28.0 -47.4 926.3 926.8 330.1 938.4 1.05 TRP 311 8145 -60.3 -64.1 61 3.8 -60.3 10 19 297.3 297.3 280.1 297.3 0.02 WND 9.0 31083 -35.2 -62.7 4 27.5 -47.9 220 79 915.3 915.8 329.9 925.8 0.92 Sounding variables and indices 1000-500 mb thick: 4836.00 m Freezing level: Surface below freezing Wetbulb zero: Below ground Precipitable water: 0.06 inches Sfc-500 mean rel hum: 65.88 % Est. max temperature: -16.59 C = 2.13 F Sfc-Lift cond lev (LCL): 953.57 mb = 594.14 m = 1949.25 ft T: -31.63 C 700-500 lapse rate: 5.29 C/km ThetaE index: 0.00 C Layer 1023.0-635007559270400.0 mb Conv cond level (CCL): 1000.00 mb = 264.00 m = 866.13 ft Mean mixing ratio: 0.14 g/kg Conv temperature: -36.92 C = -34.45 F Cap Strength: 30.14 C Lifted Index: 30.39 C Risk: None Lifted Index @300 mb: 43.17 C Lifted Index @700 mb: 22.79 C Showalter Index: 16.27 C Risk: None Total Totals Index: 30.80 C Risk: None Vertical Totals Index: 17.60 C Cross Totals Index: 13.20 C K Index: -18.90 Risk: None Sweat Index: 29.00 Risk: None Energy Index: 4.24 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 94.16 J/kg Max Up Vert Vel: 13.72 m/s Conv Inhibition (B-): 78313.94 J/kg Cap Strength: 30.41 C Lift Cond Lev (LCL): 915.08 mb = 887.52 m = 2911.79 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 28 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 1023 109 200 1 0.3 0.9 | 207 9 4.2 8.3 1 1000 264 245 5 4.5 2.1 | 222 13 8.4 9.4 2 925 810 270 7 7.0 -0.0 | 236 13 10.8 7.3 3 850 1418 305 5 4.1 -2.9 | 241 9 7.9 4.4 4 700 2793 340 7 2.4 -6.6 | 263 6 6.2 0.7 5 500 5100 15 19 -4.9 -18.4 | 6 11 -1.1 -11.0 6 400 6550 20 21 -7.2 -19.7 | 15 13 -3.4 -12.4 7 311 8145 10 19 -3.3 -18.7 | 357 11 0.5 -11.4 8 300 8370 5 19 -1.7 -18.9 | 349 12 2.2 -11.6 9 250 9500 15 21 -5.4 -20.3 | 7 13 -1.6 -13.0 10 200 10910 345 17 4.4 -16.4 | 318 12 8.2 -9.1 11 150 12720 355 3 0.3 -3.0 | 223 6 4.1 4.3 12 100 15280 230 9 6.9 5.8 | 219 17 10.7 13.1 13 70 17520 230 17 13.0 10.9 | 223 25 16.9 18.2 14 50 19620 220 27 17.4 20.7 | 217 35 21.2 28.0 15 30 22900 215 50 28.7 41.0 | 214 58 32.5 48.3 16 20 25600 225 71 50.2 50.2 | 223 79 54.0 57.5 17 10 30350 220 79 50.8 60.5 | 219 87 54.6 67.8 Wind Parameters Mean winds (0-6000m): 357.6 at 11.0 knts Storm direction: 27.6 at 8.3 knts Shear (0-3000m) pos: 1.6 neg: 0.0 tot: 1.6 10-3/s Storm rel Dir Shear (0-3000m): 72.7 deg Storm rel helicity (0-3000m) pos: 32.2 neg: -0.1 tot: 32.1 m^2/s^2 ave: 10.7 10^-3 m/s^2 rel: 0.67 Storm rel vorticity (0-3000m) horiz: 3.1 stream: 2.1 10^-3/s Energy-Hel index: 0.02 Bulk Rich Number: 4.07 Bulk Shear: 23.15 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 ------------------------------------------------------------------------------- 500 251 5 223 12| 6.0 0.0 6.0| 15.3 0.0 15.3 30.6 0.74| 6.8 5.0 1000 264 6 230 12| 3.1 0.0 3.1| 22.5 0.0 22.5 22.5 0.70| 5.2 3.6 1500 274 6 234 12| 2.0 0.0 2.0| 24.0 -0.1 23.9 16.0 0.60| 4.3 2.6 2000 285 6 238 11| 1.7 0.0 1.7| 26.5 -0.1 26.4 13.2 0.62| 3.6 2.2 2500 296 6 242 10| 1.5 0.0 1.5| 28.6 -0.1 28.6 11.4 0.63| 3.2 2.0 3000 306 6 246 10| 1.6 0.0 1.6| 32.2 -0.1 32.1 10.7 0.67| 3.1 2.1 4000 326 7 261 8| 1.9 0.0 1.9| 42.4 -0.1 42.4 10.6 0.74| 3.1 2.3 5000 347 9 286 6| 2.1 0.0 2.1| 56.4 -0.1 56.3 11.3 0.77| 3.2 2.4 6000 358 11 311 6| 1.8 0.0 1.8| 60.6 -0.1 60.5 10.1 0.76| 2.8 2.1 Wrote GIF file: /home/apache/climate/data/raob//U4641/skewt/U4641.skewt.20251224.12.gif