UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025122700.upa.cvt Date: 0000Z 27 DEC 25 Searching for U4641... Searching the city database file for: U4641 ... Date:0000Z 27 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 78 360 1 SFC 995 111 -46.7 -52.7 50 6.0 -46.8 360 1 226.8 226.8 226.7 226.9 0.03 2 991 138 -46.9 -54.9 40 8.0 -47.0 351 1 226.8 226.8 226.8 226.9 0.02 3 990 145 -44.5 -52.5 41 8.0 -44.6 348 1 229.3 229.3 229.2 229.4 0.03 4 986 172 -39.5 -47.5 42 8.0 -39.7 339 2 234.6 234.6 234.4 234.7 0.05 5 976 242 -36.3 -44.3 43 8.0 -36.5 315 3 238.5 238.5 238.2 238.7 0.08 6 960 357 -35.3 -43.3 44 8.0 -35.5 277 4 240.6 240.7 240.2 240.9 0.09 7 946 461 -30.3 -38.3 46 8.0 -30.7 242 5 246.7 246.8 246.0 247.2 0.15 8 925 622 -25.9 -32.9 52 7.0 -26.5 190 7 252.8 252.9 251.7 253.6 0.26 9 917 685 -24.1 -30.1 58 6.0 -24.6 188 7 255.3 255.4 254.0 256.3 0.34 10 872 1053 -22.1 -28.1 58 6.0 -22.8 176 8 261.1 261.1 258.9 262.3 0.43 11 853 1215 -21.9 -28.9 53 7.0 -22.7 171 9 262.9 263.0 260.3 264.1 0.41 12 850 1241 -21.9 -28.9 53 7.0 -22.7 170 9 263.2 263.3 260.5 264.4 0.41 13 733 2326 -24.5 -38.5 26 14.0 -25.7 239 4 271.7 271.8 266.3 272.3 0.19 14 730 2356 -24.7 -38.7 26 14.0 -25.9 241 4 271.8 271.9 266.3 272.4 0.18 15 700 2660 -26.5 -35.5 42 9.0 -27.3 260 3 273.1 273.2 267.3 274.0 0.27 16 636 3348 -30.3 -35.0 63 4.7 -30.7 266 6 276.4 276.5 269.5 277.4 0.31 17 608 3667 -32.1 -37.1 61 5.0 -32.5 268 7 277.9 278.0 270.4 278.7 0.26 18 500 5020 -42.1 -46.2 64 4.1 -42.3 280 13 281.7 281.7 272.3 282.1 0.12 19 462 5551 -46.1 -49.9 65 3.8 -46.2 289 14 283.2 283.2 273.1 283.5 0.09 20 400 6500 -51.5 -55.3 64 3.8 -51.6 305 17 288.1 288.1 275.7 288.2 0.05 21 333 7667 -57.9 -62.1 59 4.2 -57.9 294 16 294.8 294.8 279.0 294.9 0.03 22 310 8115 -59.1 -63.4 57 4.3 -59.2 290 15 299.2 299.2 281.0 299.3 0.02 23 300 8320 -57.9 -62.3 57 4.4 -58.0 290 17 303.7 303.7 283.0 303.8 0.03 24 273 8915 -57.3 -61.9 56 4.6 -57.3 282 15 312.9 312.9 286.4 313.0 0.03 25 250 9470 -57.7 -62.5 54 4.8 -57.8 275 13 320.3 320.3 288.9 320.4 0.03 26 200 10890 -56.1 -62.1 47 6.0 -56.2 250 13 343.9 343.9 295.3 344.1 0.04 27 184 11421 -54.9 -61.9 42 7.0 -55.1 246 14 354.2 354.2 297.5 354.4 0.05 28 150 12720 -56.9 -64.9 36 8.0 -57.1 235 15 372.0 372.1 300.9 372.2 0.04 29 100 15280 -57.9 -68.9 23 11.0 -58.2 220 23 415.9 415.9 307.3 416.0 0.04 30 75 17086 -58.7 -71.7 17 13.0 -59.1 220 35 449.8 449.8 310.8 450.0 0.03 31 70 17520 -57.3 -70.3 18 13.0 -57.8 220 38 461.8 461.8 312.0 462.0 0.04 32 50 19670 -52.7 -68.7 13 16.0 -53.8 225 54 519.3 519.3 316.3 519.8 0.07 33 36 21820 -47.1 -66.1 10 19.0 -49.7 225 71 584.9 585.0 319.9 586.0 0.15 34 32 22602 -45.9 -65.9 9 20.0 -49.1 225 78 608.2 608.2 321.0 609.5 0.17 35 30 23030 -48.1 -69.1 7 21.0 -51.0 225 81 613.5 613.6 321.2 614.4 0.12 36 27 23724 -49.1 -70.1 7 21.0 -51.9 225 81 629.5 629.5 321.9 630.3 0.11 37 20 25720 -43.9 -68.9 5 25.0 -49.2 225 81 701.8 701.9 324.6 703.4 0.18 38 19 26064 -43.9 -68.9 5 25.0 -49.4 712.2 712.3 324.8 713.8 0.19 39 19 26064 -40.5 -66.5 4 26.0 -47.3 722.7 722.9 325.2 725.1 0.26 40 17 26821 -41.2 -67.6 4 26.4 -48.2 225 83 743.8 743.9 325.8 746.1 0.25 41 14 28137 -42.5 -69.5 4 27.0 -49.7 781.9 782.0 326.8 784.2 0.23 42 12 29186 -39.1 -66.1 4 27.0 -48.5 829.2 829.4 328.0 833.8 0.44 TRP 310 8115 -59.1 -63.4 57 4.3 -59.2 290 15 299.2 299.2 281.0 299.3 0.02 WND 17 26821 -41.2 -67.6 4 26.4 -48.2 225 83 743.8 743.9 325.8 746.1 0.25 Sounding variables and indices 1000-500 mb thick: 4942.00 m Freezing level: Surface below freezing Wetbulb zero: Below ground Precipitable water: 0.06 inches Sfc-500 mean rel hum: 51.79 % Est. max temperature: -9.99 C = 14.02 F Sfc-Lift cond lev (LCL): 892.26 mb = 885.14 m = 2903.97 ft T: -23.01 C 700-500 lapse rate: 6.61 C/km ThetaE index: 0.00 C Layer 995.0-166057796923399653706080487429850005504.0 mb Conv cond level (CCL): 995.00 mb = 111.26 m = 365.03 ft Mean mixing ratio: 0.19 g/kg Conv temperature: -35.36 C = -31.65 F Cap Strength: 27.06 C Lifted Index: 28.66 C Risk: None Lifted Index @300 mb: 40.37 C Lifted Index @700 mb: 23.96 C Showalter Index: 14.31 C Risk: None Total Totals Index: 33.40 C Risk: None Vertical Totals Index: 20.20 C Cross Totals Index: 13.20 C K Index: -17.70 Risk: None Sweat Index: 31.00 Risk: None Energy Index: 3.79 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 114.49 J/kg Max Up Vert Vel: 15.13 m/s Conv Inhibition (B-): 74142.32 J/kg Cap Strength: 28.60 C Lift Cond Lev (LCL): 867.47 mb = 1091.49 m = 3580.97 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 292 at 6 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 ---------------------------------------------------------- 0 995 111 360 1 -0.0 -1.0 | 103 6 -5.9 1.3 1 925 622 190 7 1.2 6.9 | 153 10 -4.6 9.2 2 850 1241 170 9 -1.6 8.9 | 146 13 -7.4 11.2 3 700 2660 260 3 3.0 0.5 | 135 4 -2.9 2.9 4 500 5020 280 13 12.8 -2.3 | 269 7 6.9 0.1 5 400 6500 305 17 13.9 -9.8 | 313 11 8.1 -7.4 6 310 8115 290 15 14.1 -5.1 | 289 9 8.2 -2.8 7 300 8320 290 17 16.0 -5.8 | 289 11 10.1 -3.5 8 250 9470 275 13 13.0 -1.1 | 260 7 7.1 1.2 9 200 10890 250 13 12.2 4.4 | 223 9 6.4 6.8 10 150 12720 235 15 12.3 8.6 | 210 13 6.4 10.9 11 100 15280 220 23 14.8 17.6 | 204 22 8.9 20.0 12 70 17520 220 38 24.4 29.1 | 211 37 18.6 31.5 13 50 19670 225 54 38.2 38.2 | 219 52 32.3 40.5 14 30 23030 225 81 57.3 57.3 | 221 79 51.4 59.6 15 20 25720 225 81 57.3 57.3 | 221 79 51.4 59.6 Wind Parameters Mean winds (0-6000m): 261.8 at 8.4 knts Storm direction: 291.8 at 6.3 knts Shear (0-3000m) pos: 1.7 neg: 1.6 tot: 3.3 10-3/s Storm rel Dir Shear (0-3000m): 58.3 deg Storm rel helicity (0-3000m) pos: 13.5 neg: -11.4 tot: 2.1 m^2/s^2 ave: 0.7 10^-3 m/s^2 rel: 0.10 Storm rel vorticity (0-3000m) horiz: 5.0 stream: 0.5 10^-3/s Energy-Hel index: 0.01 Bulk Rich Number: 13.56 Bulk Shear: 8.44 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 ------------------------------------------------------------------------------- 500 192 4 141 8| 0.0 8.1 8.1| 3.7 -3.8 -0.1 -0.2 0.17| 13.3 2.3 1000 184 6 146 10| 0.0 4.9 4.9| 3.7 -7.7 -4.0 -4.0 0.06| 8.2 0.5 1500 182 7 148 11| 1.0 3.3 4.3| 10.2 -8.8 1.4 0.9 0.13| 6.9 0.9 2000 186 7 150 10| 1.7 2.5 4.2| 12.2 -8.9 3.3 1.6 0.14| 6.2 0.9 2500 186 6 148 10| 1.8 2.0 3.8| 12.2 -11.3 0.9 0.3 0.05| 5.6 0.3 3000 192 6 150 9| 1.7 1.6 3.3| 13.5 -11.4 2.1 0.7 0.10| 5.0 0.5 4000 216 6 163 8| 1.7 1.2 3.0| 16.7 -11.4 5.3 1.3 0.20| 4.3 0.9 5000 244 7 185 6| 1.8 1.0 2.8| 21.2 -11.4 9.8 2.0 0.26| 3.9 1.0 6000 262 8 215 4| 1.9 0.8 2.7| 30.8 -11.4 19.4 3.2 0.33| 3.7 1.2 Wrote GIF file: /home/apache/climate/data/raob//U4641/skewt/U4641.skewt.20251227.00.gif