UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025122400.upa.cvt Date: 0000Z 24 DEC 25 Searching for U4641... Searching the city database file for: U4641 ... Date:0000Z 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 1018 112 -41.3 -45.4 64 4.1 -41.4 360 1 230.7 230.7 230.6 230.8 0.06 1 1010 166 -39.3 -45.3 53 6.0 -39.4 336 3 233.2 233.2 233.0 233.4 0.07 2 1000 234 -39.1 -45.1 53 6.0 -39.2 305 5 234.1 234.1 233.9 234.2 0.07 3 990 303 -39.1 -45.1 53 6.0 -39.2 304 6 234.7 234.7 234.6 234.9 0.07 4 983 352 -36.9 -42.9 54 6.0 -37.1 303 7 237.4 237.4 237.2 237.7 0.09 5 978 388 -33.7 -39.7 55 6.0 -34.0 302 8 241.0 241.0 240.7 241.3 0.12 6 951 585 -33.1 -39.1 55 6.0 -33.4 299 11 243.5 243.5 243.1 243.9 0.14 7 948 607 -30.5 -36.5 56 6.0 -30.8 298 12 246.4 246.4 245.8 246.9 0.18 8 928 760 -28.3 -33.3 62 5.0 -28.6 295 15 250.1 250.2 249.3 250.8 0.25 9 925 783 -27.9 -32.9 62 5.0 -28.3 295 15 250.8 250.8 249.9 251.5 0.26 10 851 1381 -28.9 -33.2 66 4.3 -29.2 295 17 255.8 255.8 254.3 256.6 0.27 11 850 1389 -28.9 -33.2 66 4.3 -29.2 295 17 255.9 255.9 254.4 256.7 0.27 12 700 2760 -34.9 -38.9 67 4.0 -35.1 325 11 263.8 263.9 260.5 264.4 0.19 13 678 2983 -35.7 -39.6 67 3.9 -35.9 329 12 265.4 265.4 261.7 265.9 0.18 14 500 5050 -47.1 -51.0 64 3.9 -47.2 10 17 275.6 275.6 268.5 275.8 0.07 15 418 6218 -53.5 -57.7 60 4.2 -53.6 22 23 281.9 281.9 272.3 282.0 0.04 16 400 6500 -54.7 -58.8 60 4.1 -54.8 25 25 283.9 283.9 273.5 284.0 0.03 17 359 7185 -57.7 -61.9 59 4.2 -57.8 30 25 288.8 288.8 276.1 288.9 0.03 18 300 8310 -59.7 -63.9 58 4.2 -59.7 20 19 301.2 301.2 281.9 301.3 0.02 19 272 8927 -59.9 -64.1 58 4.2 -60.0 9 16 309.5 309.5 285.1 309.6 0.03 20 250 9460 -57.9 -62.3 57 4.4 -58.0 360 13 320.0 320.0 288.8 320.1 0.04 21 244 9613 -56.9 -61.2 58 4.3 -57.0 1 13 323.7 323.7 289.9 323.9 0.04 22 200 10870 -56.9 -61.4 57 4.5 -57.0 10 11 342.7 342.7 295.0 342.9 0.05 23 150 12690 -57.3 -62.1 54 4.8 -57.4 345 3 371.4 371.4 300.8 371.6 0.06 24 100 15260 -56.7 -61.7 53 5.0 -56.9 230 11 418.2 418.2 307.6 418.7 0.09 25 91 15856 -57.1 -62.1 53 5.0 -57.3 230 13 428.8 428.8 308.7 429.3 0.10 26 83 16434 -59.3 -64.3 52 5.0 -59.5 230 15 435.8 435.8 309.5 436.2 0.08 27 70 17500 -58.9 -64.9 46 6.0 -59.2 230 19 458.4 458.4 311.7 458.9 0.09 28 50 19620 -58.7 -64.7 46 6.0 -59.0 210 25 505.2 505.2 315.4 506.0 0.13 29 49 19747 -58.9 -65.9 40 7.0 -59.3 210 26 507.6 507.6 315.5 508.3 0.11 30 30 22880 -50.5 -60.5 30 10.0 -52.2 215 52 607.0 607.1 321.0 609.7 0.37 31 28 23333 -48.1 -59.1 27 11.0 -50.4 215 54 625.7 625.9 321.9 629.4 0.47 32 23 24631 -48.3 -60.3 24 12.0 -51.0 215 59 661.4 661.6 323.3 665.4 0.49 33 20 25560 -44.7 -58.7 19 14.0 -48.8 215 62 699.4 699.6 324.6 705.4 0.70 34 15 27494 -44.1 -61.1 13 17.0 -49.6 218 76 761.3 761.6 326.4 767.8 0.68 35 13 28473 -36.7 -56.7 11 20.0 -45.9 219 83 818.8 819.4 328.0 832.7 1.37 36 12 29029 -36.0 -57.5 9 21.4 -46.1 220 87 840.1 840.8 328.5 854.2 1.35 37 11 29636 -35.3 -58.3 8 23.0 -46.3 222 84 863.9 864.6 329.0 878.2 1.33 38 10 30300 -36.1 -61.1 6 25.0 -47.5 225 81 884.8 885.3 329.4 896.1 1.03 39 9.1 30952 -38.5 -64.5 5 26.0 -49.3 899.8 900.2 329.6 907.9 0.72 TRP 359 7185 -57.7 -61.9 59 4.2 -57.8 30 25 288.8 288.8 276.1 288.9 0.03 WND 12 29029 -36.0 -57.5 9 21.4 -46.1 220 87 840.1 840.8 328.5 854.2 1.35 Sounding variables and indices 1000-500 mb thick: 4816.00 m Freezing level: Surface below freezing Wetbulb zero: Below ground Precipitable water: 0.05 inches Sfc-500 mean rel hum: 64.54 % Est. max temperature: -17.26 C = 0.93 F Sfc-Lift cond lev (LCL): 947.01 mb = 614.57 m = 2016.28 ft T: -30.39 C 700-500 lapse rate: 5.33 C/km ThetaE index: 0.00 C Layer 1018.0-89129.0 mb Conv cond level (CCL): 1010.00 mb = 165.96 m = 544.49 ft Mean mixing ratio: 0.14 g/kg Conv temperature: -37.69 C = -35.84 F Cap Strength: 21.06 C Lifted Index: 27.65 C Risk: None Lifted Index @300 mb: 42.00 C Lifted Index @700 mb: 19.89 C Showalter Index: 15.58 C Risk: None Total Totals Index: 32.10 C Risk: None Vertical Totals Index: 18.20 C Cross Totals Index: 13.90 C K Index: -19.00 Risk: None Sweat Index: 51.00 Risk: None Energy Index: 4.05 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 79.35 J/kg Max Up Vert Vel: 12.60 m/s Conv Inhibition (B-): 84258.86 J/kg Cap Strength: 27.61 C Lift Cond Lev (LCL): 891.83 mb = 1044.71 m = 3427.47 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 9 at 11 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 1018 112 360 1 -0.0 -1.0 | 190 10 1.8 9.9 1 1000 234 305 5 4.1 -2.9 | 216 10 5.9 8.0 2 925 783 295 15 13.6 -6.3 | 254 16 15.4 4.5 3 850 1389 295 17 15.4 -7.2 | 258 18 17.2 3.7 4 700 2760 325 11 6.3 -9.0 | 257 8 8.1 1.9 5 500 5050 10 17 -3.0 -16.7 | 11 6 -1.2 -5.9 6 400 6500 25 25 -10.6 -22.7 | 37 15 -8.8 -11.8 7 359 7185 30 25 -12.5 -21.7 | 45 15 -10.7 -10.8 8 300 8310 20 19 -6.5 -17.9 | 34 8 -4.7 -7.0 9 250 9460 360 13 -0.0 -13.0 | 320 3 1.8 -2.1 10 200 10870 10 11 -1.9 -10.8 | 107 0 -0.1 0.0 11 150 12690 345 3 0.8 -2.9 | 198 8 2.6 8.0 12 100 15260 230 11 8.4 7.1 | 210 21 10.2 17.9 13 70 17500 230 19 14.6 12.2 | 215 28 16.3 23.1 14 50 19620 210 25 12.5 21.7 | 204 36 14.3 32.5 15 30 22880 215 52 29.8 42.6 | 211 62 31.6 53.5 16 20 25560 215 62 35.6 50.8 | 211 72 37.3 61.7 17 12 29029 220 87 55.9 66.6 | 217 97 57.7 77.5 18 10 30300 225 81 57.3 57.3 | 221 90 59.0 68.2 Wind Parameters Mean winds (0-6000m): 339.3 at 14.7 knts Storm direction: 9.3 at 11.0 knts Shear (0-3000m) pos: 1.7 neg: 2.7 tot: 4.4 10-3/s Storm rel Dir Shear (0-3000m): 77.1 deg Storm rel helicity (0-3000m) pos: 47.0 neg: -1.6 tot: 45.4 m^2/s^2 ave: 15.1 10^-3 m/s^2 rel: 0.54 Storm rel vorticity (0-3000m) horiz: 4.7 stream: 2.6 10^-3/s Energy-Hel index: 0.02 Bulk Rich Number: 5.90 Bulk Shear: 13.44 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 ------------------------------------------------------------------------------- 500 301 7 227 11| 0.0 11.8 11.8| 28.0 0.0 28.0 55.9 0.88| 11.9 10.5 1000 297 11 243 13| 0.0 8.1 8.1| 37.7 0.0 37.7 37.7 0.80| 8.2 6.5 1500 296 13 248 14| 0.5 5.4 5.9| 42.4 0.0 42.4 28.3 0.75| 6.3 4.7 2000 299 13 251 14| 1.2 4.0 5.2| 44.3 0.0 44.3 22.2 0.65| 5.6 3.7 2500 301 13 253 14| 1.6 3.2 4.8| 44.3 -1.1 43.2 17.3 0.55| 5.2 2.8 3000 305 13 254 13| 1.7 2.7 4.4| 47.0 -1.6 45.4 15.1 0.54| 4.7 2.6 4000 314 13 261 11| 1.9 2.0 3.9| 54.7 -1.6 53.1 13.3 0.60| 4.2 2.5 5000 327 14 273 9| 2.1 1.6 3.7| 62.7 -1.6 61.1 12.2 0.65| 4.0 2.6 6000 339 15 292 8| 2.3 1.3 3.7| 69.8 -1.6 68.2 11.4 0.62| 3.9 2.4 Wrote GIF file: /home/apache/climate/data/raob//U4641/skewt/U4641.skewt.20251224.00.gif