UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025122012.upa.cvt Date: 1200Z 20 DEC 25 Searching for U4641... Searching the city database file for: U4641 ... Date:1200Z 20 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 1013 113 -45.3 -49.6 62 4.3 -45.4 360 1 227.0 227.0 226.9 227.1 0.04 1 1012 119 -45.3 -52.3 45 7.0 -45.4 360 1 227.1 227.1 227.0 227.2 0.03 2 1005 166 -40.5 -47.5 47 7.0 -40.6 360 1 232.3 232.3 232.2 232.5 0.05 3 1000 200 -39.5 -46.5 47 7.0 -39.6 360 1 233.6 233.7 233.5 233.8 0.06 4 981 331 -38.1 -45.1 48 7.0 -38.3 334 2 236.3 236.4 236.1 236.5 0.07 5 967 430 -32.5 -39.5 50 7.0 -32.8 315 3 243.0 243.0 242.5 243.3 0.13 6 944 600 -28.3 -34.3 56 6.0 -28.7 282 4 248.9 249.0 248.2 249.5 0.22 7 925 745 -26.7 -32.7 57 6.0 -27.2 255 5 252.0 252.0 251.0 252.7 0.26 8 909 871 -25.5 -30.5 63 5.0 -25.9 259 5 254.5 254.6 253.3 255.4 0.33 9 850 1358 -25.9 -30.3 66 4.4 -26.3 275 7 259.0 259.1 257.1 260.0 0.36 10 739 2365 -28.9 -33.1 67 4.2 -29.3 293 7 266.3 266.4 262.7 267.3 0.32 11 700 2751 -30.9 -34.9 68 4.0 -31.2 300 7 268.3 268.3 264.0 269.1 0.28 12 500 5070 -44.9 -49.7 59 4.8 -45.0 130 5 278.3 278.3 270.2 278.6 0.08 13 400 6530 -54.5 -59.5 54 5.0 -54.6 95 3 284.2 284.2 273.6 284.3 0.03 14 397 6578 -54.9 -59.9 54 5.0 -54.9 91 3 284.2 284.3 273.6 284.4 0.03 15 314 8055 -59.5 -64.5 52 5.0 -59.6 335 7 297.6 297.6 280.3 297.6 0.02 16 300 8340 -58.5 -63.5 52 5.0 -58.6 335 9 302.9 302.9 282.6 303.0 0.02 17 250 9490 -56.5 -62.5 47 6.0 -56.6 335 5 322.1 322.1 289.4 322.2 0.03 18 213 10508 -55.1 -61.1 47 6.0 -55.2 292 5 339.3 339.4 294.2 339.5 0.05 19 200 10910 -55.1 -62.1 42 7.0 -55.2 275 5 345.5 345.5 295.7 345.7 0.04 20 150 12750 -55.1 -64.1 32 9.0 -55.4 200 7 375.1 375.2 301.5 375.4 0.05 21 131 13617 -54.9 -64.9 28 10.0 -55.2 212 10 390.3 390.3 303.9 390.5 0.05 22 100 15360 -51.5 -63.5 23 12.0 -52.1 235 17 428.2 428.2 308.7 428.6 0.07 23 97 15558 -50.5 -63.5 20 13.0 -51.2 236 18 433.9 433.9 309.3 434.3 0.08 24 70 17680 -50.3 -66.3 13 16.0 -51.4 245 25 476.8 476.8 313.2 477.2 0.07 25 59 18802 -48.3 -66.3 11 18.0 -49.8 235 26 505.2 505.2 315.4 505.7 0.09 26 50 19890 -49.7 -68.7 9 19.0 -51.3 225 27 526.4 526.4 316.7 526.8 0.07 27 44 20727 -50.3 -70.3 8 20.0 -52.0 225 29 544.5 544.5 317.8 544.9 0.07 28 30 23260 -45.3 -68.3 6 23.0 -48.9 225 33 621.1 621.2 321.6 622.1 0.13 29 27 23960 -47.3 -71.3 5 24.0 -50.7 634.5 634.6 322.1 635.3 0.09 TRP 314 8055 -59.5 -64.5 52 5.0 -59.6 335 7 297.6 297.6 280.3 297.6 0.02 WND Sounding variables and indices 1000-500 mb thick: 4870.00 m Freezing level: Surface below freezing Wetbulb zero: Below ground Precipitable water: 0.06 inches Sfc-500 mean rel hum: 62.74 % Est. max temperature: -14.21 C = 6.42 F Sfc-Lift cond lev (LCL): 937.61 mb = 648.27 m = 2126.84 ft T: -27.77 C 700-500 lapse rate: 6.04 C/km ThetaE index: 0.00 C Layer 1013.0-2035380315314230741112602740391936.0 mb Conv cond level (CCL): 1012.00 mb = 119.28 m = 391.33 ft Mean mixing ratio: 0.16 g/kg Conv temperature: -37.07 C = -34.73 F Cap Strength: 22.58 C Lifted Index: 28.67 C Risk: None Lifted Index @300 mb: 42.20 C Lifted Index @700 mb: 22.58 C Showalter Index: 15.02 C Risk: None Total Totals Index: 33.60 C Risk: None Vertical Totals Index: 19.00 C Cross Totals Index: 14.60 C K Index: -15.30 Risk: None Sweat Index: 19.00 Risk: None Energy Index: 3.93 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 101.68 J/kg Max Up Vert Vel: 14.26 m/s Conv Inhibition (B-): 56622.04 J/kg Cap Strength: 28.48 C Lift Cond Lev (LCL): 886.85 mb = 1050.27 m = 3445.73 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 303 at 4 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 1013 113 360 1 -0.0 -1.0 | 110 4 -3.5 1.3 1 1000 200 360 1 -0.0 -1.0 | 110 4 -3.5 1.3 2 925 745 255 5 4.8 1.3 | 200 4 1.3 3.6 3 850 1358 275 7 7.0 -0.6 | 244 4 3.5 1.7 4 700 2751 300 7 6.1 -3.5 | 295 3 2.6 -1.2 5 500 5070 130 5 -3.8 3.2 | 127 9 -7.3 5.5 6 400 6530 95 3 -3.0 0.3 | 111 7 -6.5 2.6 7 314 8055 335 7 3.0 -6.3 | 8 4 -0.5 -4.1 8 300 8340 335 9 3.8 -8.2 | 357 6 0.3 -5.9 9 250 9490 335 5 2.1 -4.5 | 32 3 -1.4 -2.2 10 200 10910 275 5 5.0 -0.4 | 219 2 1.5 1.9 11 150 12750 200 7 2.4 6.6 | 173 9 -1.1 8.9 12 100 15360 235 17 13.9 9.8 | 221 16 10.4 12.0 13 70 17680 245 25 22.7 10.6 | 236 23 19.2 12.9 14 50 19890 225 27 19.1 19.1 | 216 26 15.6 21.4 15 30 23260 225 33 23.3 23.3 | 218 32 19.8 25.6 Wind Parameters Mean winds (0-6000m): 273.3 at 5.6 knts Storm direction: 303.3 at 4.2 knts Shear (0-3000m) pos: 0.6 neg: 1.3 tot: 2.0 10-3/s Storm rel Dir Shear (0-3000m): 129.1 deg Storm rel helicity (0-3000m) pos: 5.9 neg: -2.9 tot: 3.0 m^2/s^2 ave: 1.0 10^-3 m/s^2 rel: 0.29 Storm rel vorticity (0-3000m) horiz: 2.7 stream: 0.8 10^-3/s Energy-Hel index: 0.00 Bulk Rich Number: 56.80 Bulk Shear: 1.79 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 ------------------------------------------------------------------------------- 500 299 2 128 2| 0.0 4.1 4.1| 0.6 -0.4 0.2 0.3 0.35| 4.9 1.7 1000 265 4 185 3| 0.0 3.3 3.3| 2.3 -0.4 1.8 1.8 0.41| 4.3 1.8 1500 270 5 208 3| 0.6 2.2 2.7| 4.0 -0.4 3.5 2.3 0.51| 3.5 1.8 2000 275 5 224 3| 0.7 1.6 2.3| 4.8 -0.4 4.4 2.2 0.55| 2.9 1.6 2500 279 6 237 2| 0.7 1.3 2.0| 5.7 -0.4 5.2 2.1 0.58| 2.5 1.5 3000 282 6 243 2| 0.6 1.3 2.0| 5.9 -2.9 3.0 1.0 0.29| 2.7 0.8 4000 274 6 233 3| 0.5 1.3 1.8| 5.9 -13.5 -7.7 -1.9 -0.10| 3.1 -0.3 5000 280 6 240 3| 0.4 0.9 1.2| 5.9 -28.8 -23.0 -4.6 -0.29| 3.1 -0.9 6000 273 6 226 3| 0.3 0.6 0.9| 5.9 -32.6 -26.8 -4.5 -0.33| 2.8 -0.9 Wrote GIF file: /home/apache/climate/data/raob//U4641/skewt/U4641.skewt.20251220.12.gif