UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025121112.upa.cvt Date: 1200Z 11 DEC 25 Searching for U4641... Searching the city database file for: U4641 ... Date:1200Z 11 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 1001 110 -38.5 -42.5 66 4.0 -38.6 360 1 234.6 234.6 234.5 234.8 0.09 1 1000 117 -36.1 -42.1 54 6.0 -36.3 355 1 237.1 237.1 236.8 237.3 0.09 2 998 131 -35.5 -41.5 54 6.0 -35.7 352 1 237.8 237.8 237.6 238.1 0.10 3 992 173 -33.3 -39.3 55 6.0 -33.6 345 2 240.4 240.4 240.1 240.8 0.13 4 949 483 -34.7 -39.5 62 4.8 -34.9 288 8 242.0 242.1 241.7 242.4 0.13 5 925 663 -32.3 -37.2 62 4.9 -32.6 255 11 246.3 246.3 245.7 246.8 0.17 6 913 755 -31.5 -36.3 63 4.8 -31.8 256 11 248.0 248.1 247.3 248.5 0.19 7 850 1260 -32.3 -36.9 64 4.6 -32.6 260 13 252.3 252.3 251.1 252.9 0.19 8 830 1428 -32.7 -37.3 63 4.6 -33.0 261 14 253.6 253.6 252.3 254.1 0.19 9 800 1688 -31.5 -35.8 66 4.3 -31.8 262 15 257.6 257.6 255.7 258.2 0.23 10 700 2625 -35.5 -39.5 67 4.0 -35.7 265 21 263.2 263.2 260.0 263.7 0.18 11 694 2685 -35.9 -39.8 67 3.9 -36.1 265 21 263.4 263.4 260.2 263.9 0.17 12 664 2992 -36.1 -40.0 67 3.9 -36.3 264 20 266.5 266.5 262.5 267.0 0.18 13 639 3258 -36.3 -40.7 64 4.4 -36.5 264 19 269.2 269.2 264.4 269.7 0.17 14 566 4094 -40.1 -48.1 42 8.0 -40.4 262 17 274.2 274.3 267.7 274.5 0.09 15 500 4930 -45.7 -55.7 31 10.0 -45.9 260 15 277.3 277.3 269.6 277.5 0.04 16 445 5699 -50.1 -60.1 30 10.0 -50.3 250 13 281.2 281.2 271.9 281.3 0.03 17 433 5877 -51.3 -61.3 29 10.0 -51.4 247 12 281.9 281.9 272.3 281.9 0.02 18 400 6390 -53.3 -64.3 25 11.0 -53.4 240 11 285.7 285.7 274.4 285.8 0.02 19 356 7132 -56.7 -67.7 24 11.0 -56.8 250 9 290.8 290.8 277.1 290.9 0.01 20 310 8003 -57.9 -67.9 27 10.0 -58.0 242 11 300.9 300.9 281.7 300.9 0.01 21 300 8210 -56.9 -67.9 24 11.0 -57.0 240 11 305.1 305.1 283.5 305.2 0.01 22 250 9370 -56.1 -67.1 24 11.0 -56.2 255 9 322.7 322.7 289.6 322.7 0.02 23 237 9711 -54.9 -65.9 24 11.0 -55.1 256 9 329.4 329.4 291.6 329.5 0.02 24 200 10790 -57.3 -69.3 20 12.0 -57.5 260 9 342.0 342.0 294.8 342.1 0.02 25 150 12610 -56.3 -70.3 16 14.0 -56.6 225 9 373.1 373.1 301.1 373.2 0.02 26 100 15160 -60.3 -76.3 11 16.0 -60.6 200 15 411.2 411.2 306.7 411.3 0.01 27 70 17370 -62.1 -79.1 9 17.0 -62.4 195 25 451.5 451.5 311.0 451.6 0.01 28 50 19450 -62.5 -79.5 8 17.0 -62.9 195 29 496.2 496.2 314.7 496.3 0.01 29 44 20236 -63.9 -81.9 7 18.0 -64.3 196 41 511.3 511.3 315.7 511.3 0.01 30 39 20984 -59.3 -78.3 7 19.0 -60.0 197 51 540.8 540.8 317.6 541.0 0.02 31 35 21662 -59.7 -78.7 7 19.0 -60.5 198 61 556.8 556.8 318.5 556.9 0.02 32 31 22430 -54.3 -74.3 7 20.0 -55.9 200 72 591.0 591.1 320.2 591.4 0.05 33 30 22640 -55.1 -74.1 8 19.0 -56.6 200 75 594.4 594.4 320.4 594.8 0.06 34 28 23081 -55.3 -75.3 7 20.0 -56.8 200 81 605.7 605.7 320.9 606.1 0.05 35 20 25260 -49.1 -71.1 6 22.0 -52.7 200 112 685.9 685.9 324.0 687.0 0.13 36 18 25958 -46.7 -68.7 6 22.0 -51.2 200 118 714.4 714.5 325.0 716.3 0.20 37 16 26740 -48.1 -71.1 5 23.0 -52.6 200 124 734.3 734.4 325.6 735.8 0.16 38 15 27169 -46.5 -69.5 6 23.0 -51.7 200 127 753.3 753.4 326.1 755.4 0.22 39 13 28141 -37.3 -63.3 5 26.0 -47.1 200 135 816.7 817.0 327.8 822.7 0.59 40 12 28698 -35.0 -62.0 5 27.0 -46.4 200 139 843.7 844.1 328.4 851.8 0.76 41 11 29310 -32.5 -60.5 4 28.0 -45.7 202 138 874.1 874.6 329.1 885.1 1.01 42 10 29980 -35.1 -63.1 4 28.0 -47.4 205 136 888.5 888.9 329.4 897.3 0.79 43 8.9 30792 -35.5 -63.5 4 28.0 -48.1 917.1 917.6 329.9 926.7 0.84 TRP 356 7132 -56.7 -67.7 24 11.0 -56.8 250 9 290.8 290.8 277.1 290.9 0.01 WND 12 28698 -35.0 -62.0 5 27.0 -46.4 200 139 843.7 844.1 328.4 851.8 0.76 Sounding variables and indices 1000-500 mb thick: 4813.00 m Freezing level: Surface below freezing Wetbulb zero: Below ground Precipitable water: 0.04 inches Sfc-500 mean rel hum: 57.26 % Est. max temperature: -20.84 C = -5.51 F Sfc-Lift cond lev (LCL): 933.56 mb = 598.40 m = 1963.23 ft T: -33.16 C 700-500 lapse rate: 4.43 C/km ThetaE index: 0.00 C Layer 1001.0-442381632.0 mb Conv cond level (CCL): 517.02 mb = 4704.24 m = 15433.66 ft Mean mixing ratio: 0.15 g/kg Conv temperature: 3.43 C = 38.18 F Cap Strength: 25.97 C Lifted Index: 27.55 C Risk: None Lifted Index @300 mb: 43.51 C Lifted Index @700 mb: 17.65 C Showalter Index: 20.08 C Risk: None Total Totals Index: 22.20 C Risk: None Vertical Totals Index: 13.40 C Cross Totals Index: 8.80 C K Index: -27.50 Risk: None Sweat Index: 41.00 Risk: None Energy Index: 5.26 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 39.53 J/kg Max Up Vert Vel: 8.89 m/s Conv Inhibition (B-): 83186.39 J/kg Cap Strength: 27.52 C Lift Cond Lev (LCL): 871.26 mb = 1085.61 m = 3561.66 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 291 at 11 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 1001 110 360 1 -0.0 -1.0 | 106 11 -10.6 3.0 1 1000 117 355 1 0.1 -1.0 | 106 11 -10.6 3.0 2 925 663 255 11 10.6 2.8 | 180 7 -0.0 6.9 3 850 1260 260 13 12.8 2.3 | 199 7 2.2 6.3 4 700 2625 265 21 20.9 1.8 | 240 12 10.3 5.8 5 500 4930 260 15 14.8 2.6 | 212 8 4.1 6.6 6 400 6390 240 11 9.5 5.5 | 173 10 -1.1 9.5 7 356 7132 250 9 8.5 3.1 | 163 7 -2.2 7.1 8 300 8210 240 11 9.5 5.5 | 173 10 -1.1 9.5 9 250 9370 255 9 8.7 2.3 | 163 7 -1.9 6.3 10 200 10790 260 9 8.9 1.6 | 162 6 -1.8 5.6 11 150 12610 225 9 6.4 6.4 | 158 11 -4.3 10.4 12 100 15160 200 15 5.1 14.1 | 163 19 -5.5 18.1 13 70 17370 195 25 6.5 24.1 | 172 28 -4.2 28.2 14 50 19450 195 29 7.5 28.0 | 174 32 -3.1 32.0 15 30 22640 200 75 25.7 70.5 | 191 76 15.0 74.5 16 20 25260 200 112 38.3 105.2 | 194 113 27.7 109.3 17 12 28698 200 139 47.5 130.6 | 195 140 36.9 134.6 18 10 29980 205 136 57.5 123.3 | 200 136 46.8 127.3 Wind Parameters Mean winds (0-6000m): 260.7 at 15.2 knts Storm direction: 290.7 at 11.4 knts Shear (0-3000m) pos: 1.5 neg: 2.0 tot: 3.5 10-3/s Storm rel Dir Shear (0-3000m): 130.0 deg Storm rel helicity (0-3000m) pos: 25.4 neg: -7.6 tot: 17.8 m^2/s^2 ave: 5.9 10^-3 m/s^2 rel: 0.46 Storm rel vorticity (0-3000m) horiz: 4.5 stream: 2.1 10^-3/s Energy-Hel index: 0.00 Bulk Rich Number: 3.09 Bulk Shear: 12.80 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 ------------------------------------------------------------------------------- 500 271 5 127 7| 0.0 10.5 10.5| 6.3 -5.1 1.2 2.4 0.31| 13.4 4.1 1000 258 9 158 6| 0.0 6.5 6.5| 10.3 -5.1 5.2 5.2 0.39| 8.5 3.3 1500 259 10 174 6| 0.9 4.4 5.3| 14.8 -5.1 9.7 6.5 0.46| 6.6 3.0 2000 260 12 189 6| 1.4 3.3 4.7| 19.9 -5.1 14.8 7.4 0.50| 5.7 2.9 2500 262 13 203 6| 1.8 2.6 4.4| 25.4 -5.1 20.3 8.1 0.52| 5.2 2.7 3000 262 14 211 7| 1.5 2.0 3.5| 25.4 -7.6 17.8 5.9 0.46| 4.5 2.1 4000 263 15 218 8| 1.1 1.2 2.3| 25.4 -12.8 12.6 3.1 0.35| 3.7 1.3 5000 262 16 218 8| 0.9 0.8 1.6| 25.4 -18.5 6.9 1.4 0.24| 3.3 0.8 6000 261 15 214 8| 0.7 0.6 1.3| 25.4 -27.5 -2.1 -0.3 0.10| 3.1 0.3 Wrote GIF file: /home/apache/climate/data/raob//U4641/skewt/U4641.skewt.20251211.12.gif