UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025122712.upa.cvt Date: 1200Z 27 DEC 25 Searching for U4641... Searching the city database file for: U4641 ... Date:1200Z 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 61 40 1 SFC 992 115 -45.5 -49.7 63 4.2 -45.6 40 1 228.2 228.2 228.1 228.3 0.04 2 985 162 -45.5 -50.5 57 5.0 -45.6 58 1 228.6 228.6 228.6 228.7 0.04 3 984 168 -41.7 -47.7 52 6.0 -41.8 61 1 232.5 232.5 232.4 232.7 0.05 4 978 210 -37.3 -43.3 54 6.0 -37.5 77 1 237.4 237.4 237.1 237.6 0.08 5 948 429 -28.3 -34.3 56 6.0 -28.7 157 2 248.6 248.7 247.9 249.2 0.22 6 925 606 -26.7 -31.7 63 5.0 -27.1 220 3 252.0 252.1 251.1 252.8 0.29 7 905 765 -24.9 -29.7 64 4.8 -25.4 230 3 255.4 255.5 254.2 256.4 0.36 8 870 1054 -20.3 -24.6 68 4.3 -20.9 249 3 263.1 263.2 260.9 264.8 0.60 9 850 1227 -19.9 -24.0 70 4.1 -20.5 260 3 265.3 265.4 262.6 267.1 0.65 10 841 1306 -19.9 -23.9 70 4.0 -20.5 263 4 266.1 266.2 263.2 268.0 0.66 11 799 1685 -22.1 -25.7 73 3.6 -22.6 276 7 267.7 267.8 264.2 269.4 0.59 12 759 2063 -21.3 -26.1 65 4.8 -22.0 289 10 272.5 272.6 267.5 274.3 0.60 13 700 2656 -25.1 -31.1 57 6.0 -25.8 310 15 274.7 274.8 268.6 275.9 0.41 14 542 4460 -38.9 -43.9 59 5.0 -39.1 291 17 279.1 279.1 270.9 279.6 0.14 15 516 4796 -39.9 -44.8 59 4.9 -40.1 287 17 281.8 281.9 272.5 282.3 0.14 16 500 5010 -41.9 -46.9 58 5.0 -42.1 285 17 282.0 282.0 272.5 282.3 0.11 17 400 6490 -51.5 -56.5 55 5.0 -51.6 285 23 288.1 288.1 275.7 288.2 0.05 18 363 7115 -55.3 -60.1 55 4.8 -55.4 285 25 291.1 291.1 277.3 291.2 0.03 19 324 7836 -58.1 -63.1 53 5.0 -58.2 285 27 296.8 296.8 280.0 296.9 0.02 20 300 8320 -58.7 -63.7 52 5.0 -58.7 285 23 302.6 302.6 282.5 302.7 0.02 21 285 8643 -59.1 -64.1 52 5.0 -59.2 278 21 306.5 306.5 284.0 306.6 0.02 22 250 9470 -57.1 -63.1 46 6.0 -57.2 260 17 321.2 321.2 289.2 321.3 0.03 23 200 10880 -56.9 -63.9 41 7.0 -57.1 240 15 342.7 342.7 295.0 342.8 0.04 24 176 11693 -55.5 -63.5 36 8.0 -55.7 233 18 357.7 357.7 298.3 357.9 0.04 25 150 12710 -56.5 -64.5 36 8.0 -56.7 225 21 372.7 372.7 301.1 372.9 0.04 26 100 15270 -57.7 -68.7 23 11.0 -58.0 210 31 416.2 416.3 307.3 416.4 0.04 27 90 15931 -59.1 -70.1 23 11.0 -59.4 213 34 426.2 426.2 308.4 426.4 0.03 28 70 17510 -56.9 -68.9 21 12.0 -57.4 220 42 462.7 462.7 312.0 463.0 0.05 29 50 19660 -52.7 -67.7 15 15.0 -53.8 220 60 519.3 519.3 316.3 519.8 0.08 30 46 20198 -53.5 -68.5 14 15.0 -54.6 221 66 529.9 529.9 316.9 530.4 0.08 31 38 21449 -46.3 -64.3 11 18.0 -49.0 223 80 578.0 578.1 319.6 579.3 0.18 32 30 23030 -43.9 -63.9 9 20.0 -47.8 225 97 625.0 625.1 321.7 626.8 0.24 33 22 25135 -39.3 -63.3 6 24.0 -45.9 233 108 696.6 696.8 324.4 699.7 0.35 34 20 25790 -38.3 -64.3 5 26.0 -45.9 235 112 718.9 719.1 325.1 722.0 0.34 35 19 26142 -39.0 -65.0 5 26.0 -46.4 235 112 727.5 727.6 325.4 730.4 0.32 36 18 26513 -39.7 -65.7 5 26.0 -47.1 736.5 736.7 325.6 739.4 0.31 TRP 324 7836 -58.1 -63.1 53 5.0 -58.2 285 27 296.8 296.8 280.0 296.9 0.02 WND 19 26142 -39.0 -65.0 5 26.0 -46.4 235 112 727.5 727.6 325.4 730.4 0.32 Sounding variables and indices 1000-500 mb thick: 4949.00 m Freezing level: Surface below freezing Wetbulb zero: Below ground Precipitable water: 0.08 inches Sfc-500 mean rel hum: 61.51 % Est. max temperature: -7.74 C = 18.06 F Sfc-Lift cond lev (LCL): 919.78 mb = 647.08 m = 2122.95 ft T: -26.23 C 700-500 lapse rate: 7.14 C/km ThetaE index: 0.00 C Layer 992.0- 0.0 mb Conv cond level (CCL): 992.00 mb = 114.50 m = 375.66 ft Mean mixing ratio: 0.23 g/kg Conv temperature: -33.31 C = -27.96 F Cap Strength: 28.17 C Lifted Index: 27.98 C Risk: None Lifted Index @300 mb: 38.78 C Lifted Index @700 mb: 24.39 C Showalter Index: 12.28 C Risk: None Total Totals Index: 39.90 C Risk: None Vertical Totals Index: 22.00 C Cross Totals Index: 17.90 C K Index: -8.00 Risk: None Sweat Index: 23.00 Risk: None Energy Index: 3.23 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 101.99 J/kg Max Up Vert Vel: 14.28 m/s Conv Inhibition (B-): 65081.40 J/kg Cap Strength: 28.14 C Lift Cond Lev (LCL): 884.36 mb = 934.10 m = 3064.58 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 323 at 9 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 ---------------------------------------------------------- 0 992 115 40 1 -0.6 -0.8 | 136 9 -6.4 6.7 1 925 606 220 3 1.9 2.3 | 159 10 -3.8 9.8 2 850 1227 260 3 3.0 0.5 | 161 8 -2.8 8.0 3 700 2656 310 15 11.5 -9.6 | 291 6 5.8 -2.2 4 500 5010 285 17 16.4 -4.4 | 254 11 10.7 3.1 5 400 6490 285 23 22.2 -6.0 | 265 17 16.5 1.5 6 324 7836 285 27 26.1 -7.0 | 269 20 20.3 0.5 7 300 8320 285 23 22.2 -6.0 | 265 17 16.5 1.5 8 250 9470 260 17 16.7 3.0 | 227 15 11.0 10.4 9 200 10880 240 15 13.0 7.5 | 206 17 7.3 15.0 10 150 12710 225 21 14.8 14.8 | 202 24 9.1 22.3 11 100 15270 210 31 15.5 26.8 | 196 36 9.8 34.3 12 70 17510 220 42 27.0 32.2 | 208 45 21.3 39.6 13 50 19660 220 60 38.6 46.0 | 212 63 32.8 53.4 14 30 23030 225 97 68.6 68.6 | 220 99 62.9 76.1 15 20 25790 235 112 91.7 64.2 | 230 112 86.0 71.7 Wind Parameters Mean winds (0-6000m): 292.5 at 12.6 knts Storm direction: 322.5 at 9.4 knts Shear (0-3000m) pos: 2.5 neg: 0.9 tot: 3.4 10-3/s Storm rel Dir Shear (0-3000m): 144.9 deg Storm rel helicity (0-3000m) pos: 37.4 neg: -2.2 tot: 35.1 m^2/s^2 ave: 11.7 10^-3 m/s^2 rel: 0.73 Storm rel vorticity (0-3000m) horiz: 4.2 stream: 3.0 10^-3/s Energy-Hel index: 0.02 Bulk Rich Number: 5.26 Bulk Shear: 19.39 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 ------------------------------------------------------------------------------- 500 220 2 154 10| 0.0 4.1 4.1| 13.6 -0.5 13.1 26.2 0.68| 6.7 4.5 1000 232 2 157 10| 0.9 2.1 2.9| 14.7 -0.5 14.1 14.1 0.58| 4.2 2.5 1500 250 3 161 9| 1.7 1.4 3.1| 21.2 -0.6 20.6 13.7 0.66| 4.1 2.7 2000 271 4 169 8| 2.5 1.0 3.6| 28.8 -0.6 28.1 14.1 0.74| 4.4 3.2 2500 292 6 178 5| 3.1 0.8 3.9| 36.8 -0.6 36.2 14.5 0.80| 4.7 3.7 3000 298 7 192 4| 2.5 0.9 3.4| 37.4 -2.2 35.1 11.7 0.73| 4.2 3.0 4000 299 10 222 4| 1.9 1.0 2.9| 37.4 -6.9 30.4 7.6 0.56| 3.5 2.0 5000 295 11 238 5| 1.5 1.1 2.7| 38.0 -12.3 25.7 5.1 0.44| 3.1 1.4 6000 293 13 246 6| 1.3 1.2 2.4| 44.1 -12.3 31.9 5.3 0.44| 3.0 1.3 Wrote GIF file: /home/apache/climate/data/raob//U4641/skewt/U4641.skewt.20251227.12.gif