UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025122800.upa.cvt Date: 0000Z 28 DEC 25 Searching for U4641... Searching the city database file for: U4641 ... Date:0000Z 28 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 ------------------------------------------------------------------------------- 0 1000 56 360 1 SFC 992 110 -44.3 -49.1 59 4.8 -44.4 360 1 229.4 229.4 229.3 229.5 0.04 2 982 178 -43.7 -49.7 51 6.0 -43.8 359 2 230.6 230.7 230.5 230.8 0.04 3 979 199 -38.9 -45.9 48 7.0 -39.1 358 3 235.7 235.7 235.4 235.9 0.06 4 973 241 -36.1 -43.1 48 7.0 -36.3 357 4 238.9 238.9 238.6 239.2 0.09 5 953 387 -30.5 -37.5 50 7.0 -30.9 354 7 246.0 246.0 245.4 246.5 0.16 6 925 601 -26.3 -32.3 57 6.0 -26.8 350 11 252.4 252.5 251.4 253.2 0.27 7 891 875 -20.5 -25.2 66 4.7 -21.1 339 11 261.1 261.2 259.2 262.7 0.55 8 850 1224 -19.5 -23.7 69 4.2 -20.1 325 11 265.7 265.8 262.9 267.6 0.66 9 828 1419 -18.7 -23.1 68 4.4 -19.4 320 11 268.6 268.7 265.1 270.6 0.72 10 772 1939 -20.7 -26.7 59 6.0 -21.5 308 12 271.8 271.9 267.0 273.5 0.56 11 702 2634 -26.1 -32.1 57 6.0 -26.7 291 13 273.4 273.4 267.7 274.5 0.37 12 700 2655 -26.1 -32.1 57 6.0 -26.7 290 13 273.6 273.6 267.8 274.7 0.37 13 587 3910 -31.9 -38.9 50 7.0 -32.4 287 19 281.0 281.0 272.1 281.7 0.22 14 500 5020 -40.5 -48.5 42 8.0 -40.8 285 25 283.7 283.7 273.4 284.0 0.09 15 400 6500 -52.5 -59.5 43 7.0 -52.6 285 33 286.8 286.8 275.0 286.9 0.03 16 362 7137 -58.1 -65.1 40 7.0 -58.2 277 33 287.6 287.6 275.4 287.6 0.02 17 331 7697 -60.5 -67.5 39 7.0 -60.6 270 33 291.7 291.7 277.6 291.8 0.01 18 305 8207 -59.9 -66.9 40 7.0 -60.0 266 25 299.5 299.5 281.1 299.5 0.02 19 300 8310 -60.5 -67.5 39 7.0 -60.6 265 23 300.1 300.1 281.4 300.1 0.01 20 281 8717 -62.3 -69.3 39 7.0 -62.4 256 22 303.1 303.1 282.7 303.2 0.01 21 250 9450 -56.9 -63.9 41 7.0 -57.0 240 19 321.5 321.5 289.2 321.6 0.03 22 228 10036 -54.7 -62.7 37 8.0 -54.9 230 17 333.4 333.4 292.7 333.6 0.04 23 200 10870 -56.9 -64.9 36 8.0 -57.1 215 13 342.7 342.7 295.0 342.8 0.03 24 193 11096 -56.9 -64.9 36 8.0 -57.1 214 14 346.2 346.2 295.8 346.3 0.03 25 170 11905 -54.7 -64.7 28 10.0 -54.9 212 19 362.6 362.6 299.2 362.8 0.04 26 150 12700 -58.1 -68.1 27 10.0 -58.3 210 23 370.0 370.0 300.6 370.1 0.03 27 149 12742 -58.3 -68.3 27 10.0 -58.5 210 23 370.3 370.3 300.7 370.5 0.03 28 100 15260 -57.7 -70.7 18 13.0 -58.0 200 25 416.2 416.2 307.3 416.4 0.03 29 70 17530 -55.1 -70.1 14 15.0 -55.8 210 40 466.5 466.5 312.4 466.8 0.04 30 67 17810 -56.1 -71.1 14 15.0 -56.7 211 43 470.2 470.2 312.7 470.4 0.04 31 50 19700 -50.3 -68.3 10 18.0 -51.8 220 60 524.9 525.0 316.6 525.4 0.08 32 47 20107 -48.5 -67.5 9 19.0 -50.4 221 65 538.6 538.7 317.5 539.2 0.09 33 43 20703 -41.3 -62.3 9 21.0 -45.0 222 73 570.2 570.3 319.2 571.7 0.20 34 35 22103 -41.5 -64.5 7 23.0 -45.8 224 91 604.3 604.3 320.9 605.7 0.19 35 33 22504 -40.3 -64.3 6 24.0 -45.2 224 96 617.7 617.8 321.5 619.3 0.20 36 31 22933 -37.8 -63.8 5 26.0 -43.9 225 101 635.6 635.7 322.2 637.4 0.23 37 30 23160 -36.5 -63.5 4 27.0 -43.3 225 97 645.1 645.2 322.6 647.1 0.25 38 28 23636 -36.5 -64.5 4 28.0 -43.6 222 96 658.0 658.1 323.0 659.9 0.23 39 25 24405 -43.7 -69.7 4 26.0 -48.4 216 94 659.0 659.0 323.0 660.0 0.13 40 22 25253 -47.5 -73.5 3 26.0 -51.4 210 92 672.2 672.2 323.5 672.9 0.08 41 20 25880 -47.7 -73.7 3 26.0 -51.8 205 91 690.2 690.2 324.1 690.9 0.09 42 14 28227 -49.3 -74.3 4 25.0 -53.8 758.9 758.9 326.2 759.9 0.12 TRP 331 7697 -60.5 -67.5 39 7.0 -60.6 270 33 291.7 291.7 277.6 291.8 0.01 WND 31 22933 -37.8 -63.8 5 26.0 -43.9 225 101 635.6 635.7 322.2 637.4 0.23 Sounding variables and indices 1000-500 mb thick: 4964.00 m Freezing level: Surface below freezing Wetbulb zero: Below ground Precipitable water: 0.08 inches Sfc-500 mean rel hum: 55.17 % Est. max temperature: -7.02 C = 19.36 F Sfc-Lift cond lev (LCL): 910.24 mb = 718.61 m = 2357.63 ft T: -23.81 C 700-500 lapse rate: 6.09 C/km ThetaE index: 0.00 C Layer 992.0--6308233.0 mb Conv cond level (CCL): 992.00 mb = 109.87 m = 360.45 ft Mean mixing ratio: 0.23 g/kg Conv temperature: -33.19 C = -27.75 F Cap Strength: 28.26 C Lifted Index: 29.21 C Risk: None Lifted Index @300 mb: 36.80 C Lifted Index @700 mb: 23.16 C Showalter Index: 13.30 C Risk: None Total Totals Index: 37.80 C Risk: None Vertical Totals Index: 21.00 C Cross Totals Index: 16.80 C K Index: -8.70 Risk: None Sweat Index: 47.00 Risk: None Energy Index: 3.48 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 110.34 J/kg Max Up Vert Vel: 14.86 m/s Conv Inhibition (B-): 67966.47 J/kg Cap Strength: 29.15 C Lift Cond Lev (LCL): 882.80 mb = 943.40 m = 3095.10 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 324 at 13 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 ---------------------------------------------------------- 0 992 110 360 1 -0.0 -1.0 | 141 12 -7.6 9.4 1 925 601 350 11 1.9 -10.8 | 86 6 -5.7 -0.4 2 850 1224 325 11 6.3 -9.0 | 136 2 -1.3 1.4 3 700 2655 290 13 12.2 -4.4 | 218 8 4.6 6.0 4 500 5020 285 25 24.1 -6.5 | 257 17 16.5 3.9 5 400 6500 285 33 31.9 -8.5 | 266 24 24.2 1.9 6 331 7697 270 33 33.0 -0.0 | 248 27 25.4 10.4 7 300 8310 265 23 22.9 2.0 | 231 20 15.3 12.4 8 250 9450 240 19 16.5 9.5 | 204 22 8.8 19.9 9 200 10870 215 13 7.5 10.6 | 180 21 -0.2 21.0 10 150 12700 210 23 11.5 19.9 | 187 31 3.9 30.3 11 100 15260 200 25 8.6 23.5 | 182 34 0.9 33.9 12 70 17530 210 40 20.0 34.6 | 195 47 12.4 45.0 13 50 19700 220 60 38.6 46.0 | 209 64 30.9 56.4 14 31 22933 225 101 71.4 71.4 | 218 104 63.8 81.8 15 30 23160 225 97 68.6 68.6 | 218 100 61.0 79.0 16 20 25880 205 91 38.5 82.5 | 198 98 30.8 92.9 Wind Parameters Mean winds (0-6000m): 293.7 at 17.2 knts Storm direction: 323.7 at 12.9 knts Shear (0-3000m) pos: 0.0 neg: 2.6 tot: 2.6 10-3/s Storm rel Dir Shear (0-3000m): 90.8 deg Storm rel helicity (0-3000m) pos: 8.2 neg: -16.6 tot: -8.4 m^2/s^2 ave: -2.8 10^-3 m/s^2 rel: -0.00 Storm rel vorticity (0-3000m) horiz: 4.2 stream: -0.0 10^-3/s Energy-Hel index: 0.00 Bulk Rich Number: 3.81 Bulk Shear: 29.00 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 ------------------------------------------------------------------------------- 500 351 6 123 8| 0.0 10.3 10.3| 0.0 -16.6 -16.6 -33.1 -0.75| 10.4 -7.8 1000 344 8 113 6| 0.0 5.2 5.2| 1.4 -16.6 -15.2 -15.2 -0.43| 7.2 -3.1 1500 335 9 117 4| 0.0 3.7 3.7| 2.7 -16.6 -13.8 -9.2 -0.20| 5.8 -1.2 2000 328 10 131 3| 0.0 3.0 3.0| 3.7 -16.6 -12.9 -6.4 -0.11| 5.0 -0.6 2500 320 11 160 3| 0.0 2.6 2.6| 4.0 -16.6 -12.6 -5.0 -0.09| 4.6 -0.4 3000 314 11 188 3| 0.0 2.6 2.6| 8.2 -16.6 -8.4 -2.8 -0.00| 4.2 -0.0 4000 304 13 222 4| 0.0 2.6 2.6| 17.0 -16.6 0.4 0.1 0.11| 3.8 0.4 5000 297 15 238 7| 0.0 2.6 2.6| 25.1 -16.6 8.6 1.7 0.15| 3.6 0.5 6000 294 17 247 9| 0.0 2.6 2.6| 36.7 -16.6 20.1 3.4 0.18| 3.5 0.6 Wrote GIF file: /home/apache/climate/data/raob//U4641/skewt/U4641.skewt.20251228.00.gif