UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025122312.upa.cvt Date: 1200Z 23 DEC 25 Searching for U4641... Searching the city database file for: U4641 ... Date:1200Z 23 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 1015 109 -44.9 -49.2 62 4.3 -45.0 235 1 227.3 227.3 227.2 227.4 0.04 1 1008 155 -44.9 -49.9 57 5.0 -45.0 247 3 227.7 227.7 227.6 227.8 0.04 2 1000 209 -43.3 -48.3 58 5.0 -43.4 260 5 229.9 229.9 229.8 230.0 0.05 3 998 222 -43.1 -48.1 58 5.0 -43.2 261 5 230.2 230.2 230.1 230.3 0.05 4 991 270 -40.1 -45.1 59 5.0 -40.2 266 6 233.7 233.7 233.5 233.8 0.07 5 978 360 -39.7 -44.7 59 5.0 -39.8 276 7 234.9 235.0 234.8 235.1 0.07 6 955 525 -33.3 -39.3 55 6.0 -33.6 292 10 243.0 243.0 242.6 243.4 0.13 7 925 750 -31.3 -36.3 61 5.0 -31.6 315 13 247.3 247.3 246.7 247.8 0.19 8 912 850 -30.7 -35.5 63 4.8 -31.0 316 13 248.9 249.0 248.2 249.5 0.20 9 850 1351 -30.5 -34.8 66 4.3 -30.8 320 15 254.2 254.2 252.8 254.9 0.23 10 844 1401 -30.3 -34.7 65 4.4 -30.6 320 15 254.9 255.0 253.5 255.6 0.24 11 726 2464 -34.1 -38.6 64 4.5 -34.4 312 18 262.0 262.0 259.1 262.5 0.19 12 700 2718 -35.5 -39.8 65 4.3 -35.7 310 19 263.2 263.2 260.0 263.7 0.17 13 527 4652 -47.5 -51.6 63 4.1 -47.6 297 19 271.0 271.0 265.5 271.2 0.06 14 500 5000 -48.1 -52.3 62 4.2 -48.2 295 19 274.4 274.4 267.7 274.6 0.06 15 434 5917 -51.3 -55.5 61 4.2 -51.4 285 15 281.7 281.7 272.2 281.8 0.05 16 400 6440 -53.7 -58.3 57 4.6 -53.8 280 13 285.2 285.2 274.2 285.3 0.04 17 346 7362 -57.7 -62.6 53 4.9 -57.8 310 7 291.9 291.9 277.6 291.9 0.02 18 300 8260 -58.3 -63.3 53 5.0 -58.3 345 9 303.2 303.2 282.7 303.3 0.03 19 275 8813 -58.3 -63.3 53 5.0 -58.3 338 8 310.8 310.8 285.7 310.9 0.03 20 250 9420 -56.5 -62.5 47 6.0 -56.6 330 7 322.1 322.1 289.4 322.2 0.03 21 200 10840 -55.3 -62.3 41 7.0 -55.5 285 3 345.2 345.2 295.6 345.4 0.04 22 181 11478 -54.5 -62.5 37 8.0 -54.7 271 4 356.5 356.5 298.0 356.7 0.05 23 150 12680 -54.9 -63.9 32 9.0 -55.2 245 7 375.5 375.5 301.5 375.7 0.05 24 100 15260 -56.5 -68.5 21 12.0 -56.9 220 13 418.6 418.6 307.6 418.8 0.04 25 70 17520 -58.5 -72.5 15 14.0 -58.9 210 25 459.2 459.2 311.7 459.4 0.03 26 61 18387 -55.9 -70.9 14 15.0 -56.6 210 28 483.5 483.5 313.7 483.7 0.04 27 52 19394 -58.5 -74.5 11 16.0 -59.1 210 32 500.0 500.0 314.9 500.2 0.03 28 50 19640 -57.5 -73.5 11 16.0 -58.2 210 33 508.0 508.0 315.5 508.2 0.04 29 35 21927 -50.9 -68.9 10 18.0 -52.8 203 53 579.7 579.8 319.7 580.5 0.10 30 30 22930 -50.9 -69.9 9 19.0 -53.1 200 62 605.9 605.9 320.9 606.7 0.10 31 28 23378 -51.0 -70.4 8 19.4 -53.2 205 68 617.7 617.8 321.4 618.5 0.10 32 25 24114 -51.1 -71.1 7 20.0 -53.6 207 67 637.7 637.8 322.2 638.6 0.10 33 23 24661 -45.7 -67.7 7 22.0 -49.8 208 66 669.0 669.1 323.4 670.5 0.18 34 20 25600 -41.3 -64.3 7 23.0 -47.4 210 64 709.8 709.9 324.8 712.7 0.34 35 19 25948 -42.3 -65.3 6 23.0 -48.3 717.1 717.3 325.1 719.9 0.31 TRP 346 7362 -57.7 -62.6 53 4.9 -57.8 310 7 291.9 291.9 277.6 291.9 0.02 WND 28 23378 -51.0 -70.4 8 19.4 -53.2 205 68 617.7 617.8 321.4 618.5 0.10 Sounding variables and indices 1000-500 mb thick: 4791.00 m Freezing level: Surface below freezing Wetbulb zero: Below ground Precipitable water: 0.04 inches Sfc-500 mean rel hum: 63.06 % Est. max temperature: -19.20 C = -2.55 F Sfc-Lift cond lev (LCL): 939.60 mb = 639.63 m = 2098.49 ft T: -32.28 C 700-500 lapse rate: 5.52 C/km ThetaE index: 0.00 C Layer 1015.0- 0.0 mb Conv cond level (CCL): 1008.00 mb = 155.45 m = 510.02 ft Mean mixing ratio: 0.11 g/kg Conv temperature: -39.86 C = -39.74 F Cap Strength: 26.37 C Lifted Index: 28.76 C Risk: None Lifted Index @300 mb: 45.22 C Lifted Index @700 mb: 21.61 C Showalter Index: 16.04 C Risk: None Total Totals Index: 30.90 C Risk: None Vertical Totals Index: 17.60 C Cross Totals Index: 13.30 C K Index: -21.50 Risk: None Sweat Index: 49.00 Risk: None Energy Index: 4.19 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 84.17 J/kg Max Up Vert Vel: 12.97 m/s Conv Inhibition (B-): 62826.54 J/kg Cap Strength: 28.10 C Lift Cond Lev (LCL): 897.36 mb = 965.49 m = 3167.57 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 334 at 12 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 1015 109 235 1 0.8 0.6 | 158 13 -4.6 11.7 1 1000 209 260 5 4.9 0.9 | 178 12 -0.5 12.0 2 925 750 315 13 9.2 -9.2 | 243 4 3.8 1.9 3 850 1351 320 15 9.6 -11.5 | 275 4 4.2 -0.4 4 700 2718 310 19 14.6 -12.2 | 277 9 9.1 -1.1 5 500 5000 295 19 17.2 -8.0 | 255 12 11.8 3.1 6 400 6440 280 13 12.8 -2.3 | 220 11 7.4 8.8 7 346 7362 310 7 5.4 -4.5 | 179 7 -0.1 6.6 8 300 8260 345 9 2.3 -8.7 | 128 4 -3.1 2.4 9 250 9420 330 7 3.5 -6.1 | 159 5 -1.9 5.0 10 200 10840 285 3 2.9 -0.8 | 166 11 -2.5 10.3 11 150 12680 245 7 6.3 3.0 | 184 14 0.9 14.0 12 100 15260 220 13 8.4 10.0 | 188 21 2.9 21.0 13 70 17520 210 25 12.5 21.7 | 192 33 7.1 32.7 14 50 19640 210 33 16.5 28.6 | 196 41 11.1 39.7 15 30 22930 200 62 21.2 58.3 | 193 71 15.8 69.3 16 28 23378 205 68 28.7 61.6 | 198 76 23.3 72.7 17 20 25600 210 64 32.0 55.4 | 202 72 26.6 66.5 Wind Parameters Mean winds (0-6000m): 303.9 at 16.5 knts Storm direction: 333.9 at 12.4 knts Shear (0-3000m) pos: 2.7 neg: 0.8 tot: 3.5 10-3/s Storm rel Dir Shear (0-3000m): 114.3 deg Storm rel helicity (0-3000m) pos: 35.6 neg: -2.1 tot: 33.5 m^2/s^2 ave: 11.2 10^-3 m/s^2 rel: 0.61 Storm rel vorticity (0-3000m) horiz: 4.1 stream: 2.5 10^-3/s Energy-Hel index: 0.02 Bulk Rich Number: 6.19 Bulk Shear: 13.60 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 ------------------------------------------------------------------------------- 500 285 7 188 9| 10.8 0.0 10.8| 29.1 0.0 29.1 58.2 0.84| 12.7 10.7 1000 307 10 206 6| 7.3 0.0 7.3| 34.3 0.0 34.3 34.3 0.83| 8.9 7.4 1500 312 12 224 5| 5.4 0.0 5.4| 35.5 0.0 35.5 23.6 0.81| 6.6 5.3 2000 314 13 239 4| 4.0 0.5 4.5| 35.6 0.0 35.6 17.8 0.74| 5.4 4.0 2500 313 14 251 5| 3.2 0.8 4.0| 35.6 -0.2 35.4 14.1 0.68| 4.7 3.2 3000 312 15 257 6| 2.7 0.8 3.5| 35.6 -2.1 33.5 11.2 0.61| 4.1 2.5 4000 310 16 262 7| 2.0 0.8 2.8| 35.6 -6.9 28.7 7.2 0.49| 3.4 1.7 5000 307 16 261 8| 1.6 0.8 2.4| 35.6 -13.3 22.3 4.5 0.38| 3.0 1.1 6000 304 16 257 8| 1.3 0.8 2.1| 35.6 -29.2 6.4 1.1 0.17| 2.9 0.5 Wrote GIF file: /home/apache/climate/data/raob//U4641/skewt/U4641.skewt.20251223.12.gif