UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025120100.upa.cvt Date: 0000Z 1 DEC 25 Searching for U4641... Searching the city database file for: U4641 ... Date:0000Z 1 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 1025 112 -41.1 -44.9 67 3.8 -41.2 235 1 230.4 230.4 230.4 230.6 0.07 1 1016 172 -40.9 -45.7 60 4.8 -41.0 255 2 231.2 231.2 231.1 231.4 0.06 2 1015 179 -39.9 -44.7 60 4.8 -40.0 257 2 232.3 232.3 232.2 232.4 0.07 3 1014 186 -37.7 -42.7 59 5.0 -37.8 259 2 234.5 234.5 234.4 234.8 0.09 4 1000 282 -35.1 -40.0 61 4.9 -35.3 290 3 238.1 238.1 237.9 238.4 0.12 5 996 310 -34.9 -39.8 61 4.9 -35.1 297 3 238.5 238.5 238.3 238.9 0.12 6 991 345 -31.9 -36.9 61 5.0 -32.1 306 4 241.9 241.9 241.6 242.3 0.16 7 975 461 -28.1 -33.1 62 5.0 -28.5 335 6 246.8 246.9 246.4 247.5 0.24 8 940 725 -25.9 -29.6 71 3.7 -26.2 41 9 251.7 251.7 250.9 252.6 0.35 9 925 842 -26.1 -29.6 72 3.5 -26.4 70 11 252.6 252.7 251.8 253.6 0.36 10 850 1453 -26.5 -29.8 74 3.3 -26.8 75 11 258.4 258.4 256.6 259.5 0.38 11 777 2100 -27.9 -31.2 73 3.3 -28.2 140 10 263.6 263.7 260.7 264.7 0.36 12 710 2746 -28.5 -33.1 65 4.6 -28.9 205 9 269.8 269.9 265.2 270.8 0.33 13 700 2848 -28.9 -33.8 63 4.9 -29.3 215 9 270.5 270.5 265.6 271.4 0.31 14 592 4031 -34.5 -45.5 32 11.0 -35.1 213 13 277.3 277.3 269.7 277.6 0.11 15 557 4454 -37.3 -48.3 31 11.0 -37.8 212 14 278.8 278.8 270.6 279.1 0.09 16 500 5190 -42.5 -52.5 33 10.0 -42.8 210 17 281.2 281.2 272.0 281.4 0.06 17 438 6076 -47.7 -57.7 31 10.0 -47.9 213 26 285.5 285.5 274.3 285.6 0.04 18 400 6670 -52.3 -61.3 33 9.0 -52.4 215 33 287.0 287.0 275.2 287.1 0.02 19 366 7237 -57.1 -66.1 31 9.0 -57.2 213 35 288.0 288.0 275.6 288.1 0.01 20 306 8349 -63.7 -72.7 28 9.0 -63.7 210 38 293.9 293.9 278.6 293.9 0.01 21 300 8470 -64.1 -73.1 28 9.0 -64.1 210 38 295.0 295.0 279.1 295.0 0.01 22 292 8637 -64.7 -73.7 28 9.0 -64.7 210 38 296.4 296.4 279.7 296.4 0.01 23 250 9590 -65.3 -73.3 32 8.0 -65.3 205 29 309.0 309.0 284.9 309.0 0.01 24 247 9663 -65.7 -73.7 32 8.0 -65.7 204 28 309.5 309.5 285.1 309.5 0.01 25 221 10343 -61.1 -69.1 34 8.0 -61.2 194 22 326.5 326.5 290.7 326.6 0.02 26 200 10960 -61.3 -69.3 34 8.0 -61.4 185 17 335.7 335.7 293.3 335.8 0.02 27 150 12750 -60.9 -69.9 30 9.0 -61.0 175 9 365.2 365.2 299.7 365.3 0.02 28 100 15260 -61.7 -72.7 22 11.0 -61.9 145 17 408.5 408.5 306.3 408.6 0.02 29 85 16265 -61.3 -73.3 19 12.0 -61.6 152 22 428.8 428.8 308.7 428.9 0.02 30 70 17460 -64.1 -76.1 18 12.0 -64.3 160 29 447.3 447.3 310.6 447.3 0.02 31 52 19278 -64.7 -78.7 13 14.0 -65.0 485.5 485.5 313.9 485.6 0.02 TRP 292 8637 -64.7 -73.7 28 9.0 -64.7 210 38 296.4 296.4 279.7 296.4 0.01 WND Sounding variables and indices 1000-500 mb thick: 4908.00 m Freezing level: Surface below freezing Wetbulb zero: Below ground Precipitable water: 0.06 inches Sfc-500 mean rel hum: 55.46 % Est. max temperature: -14.94 C = 5.11 F Sfc-Lift cond lev (LCL): 958.68 mb = 583.37 m = 1913.91 ft T: -27.08 C 700-500 lapse rate: 5.81 C/km ThetaE index: 0.00 C Layer 1025.0--230215357595645902848.0 mb Conv cond level (CCL): 1016.00 mb = 172.02 m = 564.36 ft Mean mixing ratio: 0.22 g/kg Conv temperature: -32.78 C = -27.00 F Cap Strength: 28.63 C Lifted Index: 29.73 C Risk: None Lifted Index @300 mb: 35.43 C Lifted Index @700 mb: 23.11 C Showalter Index: 17.89 C Risk: None Total Totals Index: 28.70 C Risk: None Vertical Totals Index: 16.00 C Cross Totals Index: 12.70 C K Index: -18.70 Risk: None Sweat Index: 39.00 Risk: None Energy Index: 4.69 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 87.13 J/kg Max Up Vert Vel: 13.20 m/s Conv Inhibition (B-): 42428.02 J/kg Cap Strength: 29.68 C Lift Cond Lev (LCL): 922.21 mb = 863.80 m = 2833.97 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 229 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 1025 112 235 1 0.8 0.6 | 49 8 -6.4 -5.6 1 1000 282 290 3 2.8 -1.0 | 31 8 -4.4 -7.2 2 925 842 70 11 -10.3 -3.8 | 60 20 -17.5 -9.9 3 850 1453 75 11 -10.6 -2.8 | 63 20 -17.8 -9.0 4 700 2848 215 9 5.2 7.4 | 120 2 -2.0 1.2 5 500 5190 210 17 8.5 14.7 | 189 9 1.3 8.6 6 400 6670 215 33 18.9 27.0 | 209 24 11.7 20.9 7 300 8470 210 38 19.0 32.9 | 204 29 11.8 26.7 8 292 8637 210 38 19.0 32.9 | 204 29 11.8 26.7 9 250 9590 205 29 12.3 26.3 | 194 21 5.0 20.1 10 200 10960 185 17 1.5 16.9 | 152 12 -5.7 10.8 11 150 12750 175 9 -0.8 9.0 | 109 8 -8.0 2.8 12 100 15260 145 17 -9.8 13.9 | 115 19 -17.0 7.8 13 70 17460 160 29 -9.9 27.3 | 141 27 -17.1 21.1 Wind Parameters Mean winds (0-6000m): 199.5 at 12.7 knts Storm direction: 229.5 at 9.5 knts Shear (0-3000m) pos: 1.5 neg: 0.0 tot: 1.5 10-3/s Storm rel Dir Shear (0-3000m): 92.3 deg Storm rel helicity (0-3000m) pos: 117.3 neg: -8.8 tot: 108.5 m^2/s^2 ave: 36.2 10^-3 m/s^2 rel: 0.50 Storm rel vorticity (0-3000m) horiz: 8.2 stream: 4.1 10^-3/s Energy-Hel index: 0.06 Bulk Rich Number: 2.54 Bulk Shear: 34.32 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 ------------------------------------------------------------------------------- 500 340 4 30 12| 8.7 0.0 8.7| 9.4 -8.8 0.6 1.2 -0.12| 12.1 -1.4 1000 63 7 55 17| 6.2 0.0 6.2| 55.6 -8.8 46.9 46.9 0.36| 11.3 4.1 1500 70 8 59 18| 4.0 0.0 4.0| 73.1 -8.8 64.3 42.9 0.44| 8.8 3.9 2000 82 9 65 18| 2.6 0.0 2.6|105.5 -8.8 96.7 48.3 0.54| 8.9 4.8 2500 91 9 70 17| 1.8 0.0 1.8|116.4 -8.8 107.6 43.0 0.52| 8.9 4.7 3000 98 9 73 17| 1.5 0.0 1.5|117.3 -8.8 108.5 36.2 0.50| 8.2 4.1 4000 157 10 104 11| 1.2 0.4 1.6|119.4 -8.8 110.6 27.7 0.51| 6.6 3.3 5000 189 11 129 7| 0.9 0.7 1.6|121.2 -8.8 112.4 22.5 0.49| 5.6 2.8 6000 199 13 153 6| 1.6 0.6 2.2|133.2 -8.8 124.4 20.7 0.47| 5.6 2.6 Wrote GIF file: /home/apache/climate/data/raob//U4641/skewt/U4641.skewt.20251201.00.gif