UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025122500.upa.cvt Date: 0000Z 25 DEC 25 Searching for U4641... Searching the city database file for: U4641 ... Date:0000Z 25 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 1023 111 -42.3 -46.5 63 4.2 -42.4 170 1 229.4 229.4 229.3 229.5 0.06 1 1014 170 -40.3 -45.0 61 4.7 -40.4 184 2 231.9 231.9 231.9 232.1 0.07 2 1000 265 -40.5 -45.2 61 4.7 -40.6 205 3 232.6 232.7 232.6 232.8 0.07 3 990 333 -40.7 -45.4 60 4.7 -40.8 211 3 233.1 233.1 233.0 233.3 0.07 4 975 439 -33.1 -38.1 61 5.0 -33.3 221 4 241.8 241.8 241.5 242.2 0.15 5 953 601 -28.3 -33.3 62 5.0 -28.6 236 4 248.2 248.3 247.6 248.9 0.24 6 925 816 -26.7 -31.2 66 4.5 -27.1 255 5 252.0 252.1 251.1 252.9 0.31 7 919 863 -26.1 -30.4 67 4.3 -26.5 255 5 253.1 253.1 252.1 254.0 0.33 8 860 1343 -26.3 -30.6 67 4.3 -26.7 251 5 257.7 257.8 256.1 258.7 0.35 9 850 1427 -26.7 -31.1 66 4.4 -27.1 250 5 258.2 258.2 256.4 259.1 0.34 10 773 2108 -30.1 -34.4 66 4.3 -30.4 314 7 261.6 261.7 259.0 262.4 0.27 11 712 2693 -29.7 -34.0 66 4.3 -30.0 9 9 268.3 268.3 264.1 269.2 0.30 12 700 2814 -30.5 -34.6 67 4.1 -30.8 20 9 268.7 268.8 264.3 269.6 0.29 13 553 4451 -41.3 -46.1 60 4.8 -41.5 38 17 274.7 274.7 268.0 275.0 0.11 14 500 5130 -44.5 -49.3 59 4.8 -44.6 45 21 278.8 278.8 270.6 279.1 0.09 15 400 6600 -52.5 -57.5 55 5.0 -52.6 30 31 286.8 286.8 275.0 286.9 0.04 16 365 7187 -56.5 -61.5 53 5.0 -56.6 28 31 289.0 289.0 276.2 289.1 0.03 17 300 8420 -61.1 -66.1 51 5.0 -61.2 25 31 299.2 299.2 281.0 299.3 0.02 18 296 8503 -61.3 -66.3 51 5.0 -61.3 25 31 300.1 300.1 281.4 300.1 0.02 19 274 8981 -61.7 -66.7 51 5.0 -61.7 20 26 306.2 306.2 283.9 306.3 0.02 20 250 9550 -60.1 -65.1 52 5.0 -60.2 15 21 316.7 316.7 287.7 316.8 0.02 21 220 10351 -58.1 -64.1 46 6.0 -58.2 1 19 331.6 331.6 292.2 331.7 0.03 22 200 10950 -58.9 -64.9 46 6.0 -59.0 350 17 339.5 339.5 294.2 339.6 0.03 23 150 12750 -59.1 -66.1 40 7.0 -59.2 330 9 368.3 368.3 300.3 368.4 0.04 24 100 15300 -58.9 -66.9 35 8.0 -59.1 250 7 413.9 413.9 307.0 414.2 0.05 25 70 17520 -60.7 -69.7 30 9.0 -61.0 240 13 454.5 454.5 311.3 454.8 0.05 26 66 17887 -61.3 -71.3 25 10.0 -61.6 237 15 460.9 460.9 311.9 461.2 0.04 27 50 19630 -57.9 -68.9 23 11.0 -58.5 225 25 507.0 507.1 315.5 507.5 0.07 28 34 22093 -53.5 -66.5 19 13.0 -54.8 225 45 577.7 577.8 319.6 578.8 0.15 29 30 22910 -48.3 -63.3 16 15.0 -50.8 225 52 613.0 613.1 321.3 614.9 0.26 30 27 23608 -45.5 -61.2 15 15.7 -48.9 220 60 639.6 639.7 322.4 642.5 0.37 31 26 23860 -44.5 -60.5 15 16.0 -48.3 649.4 649.5 322.8 652.8 0.43 32 25 24123 -45.1 -63.1 12 18.0 -49.0 655.0 655.1 323.0 657.5 0.32 TRP 296 8503 -61.3 -66.3 51 5.0 -61.3 25 31 300.1 300.1 281.4 300.1 0.02 WND 27 23608 -45.5 -61.2 15 15.7 -48.9 220 60 639.6 639.7 322.4 642.5 0.37 Sounding variables and indices 1000-500 mb thick: 4865.00 m Freezing level: Surface below freezing Wetbulb zero: Below ground Precipitable water: 0.06 inches Sfc-500 mean rel hum: 63.79 % Est. max temperature: -14.80 C = 5.36 F Sfc-Lift cond lev (LCL): 949.54 mb = 627.48 m = 2058.64 ft T: -28.11 C 700-500 lapse rate: 6.04 C/km ThetaE index: 0.00 C Layer 1023.0- 0.0 mb Conv cond level (CCL): 1014.00 mb = 170.48 m = 559.31 ft Mean mixing ratio: 0.17 g/kg Conv temperature: -35.88 C = -32.58 F Cap Strength: 27.70 C Lifted Index: 30.30 C Risk: None Lifted Index @300 mb: 40.66 C Lifted Index @700 mb: 24.32 C Showalter Index: 16.18 C Risk: None Total Totals Index: 31.20 C Risk: None Vertical Totals Index: 17.80 C Cross Totals Index: 13.40 C K Index: -17.40 Risk: None Sweat Index: 31.00 Risk: None Energy Index: 4.22 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 105.30 J/kg Max Up Vert Vel: 14.51 m/s Conv Inhibition (B-): 58190.36 J/kg Cap Strength: 30.28 C Lift Cond Lev (LCL): 920.51 mb = 851.15 m = 2792.44 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 62 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 1023 111 170 1 -0.2 1.0 | 237 10 8.1 5.3 1 1000 265 205 3 1.3 2.7 | 234 12 9.5 7.0 2 925 816 255 5 4.8 1.3 | 247 14 13.1 5.6 3 850 1427 250 5 4.7 1.7 | 245 14 13.0 6.0 4 700 2814 20 9 -3.1 -8.5 | 309 7 5.2 -4.1 5 500 5130 45 21 -14.8 -14.8 | 32 12 -6.6 -10.5 6 400 6600 30 31 -15.5 -26.8 | 18 24 -7.2 -22.5 7 300 8420 25 31 -13.1 -28.1 | 12 24 -4.8 -23.8 8 296 8503 25 31 -13.1 -28.1 | 12 24 -4.8 -23.8 9 250 9550 15 21 -5.4 -20.3 | 350 16 2.8 -16.0 10 200 10950 350 17 3.0 -16.7 | 318 17 11.2 -12.4 11 150 12750 330 9 4.5 -7.8 | 285 13 12.8 -3.5 12 100 15300 250 7 6.6 2.4 | 246 16 14.8 6.7 13 70 17520 240 13 11.3 6.5 | 241 22 19.5 10.8 14 50 19630 225 25 17.7 17.7 | 230 34 25.9 22.0 15 30 22910 225 52 36.8 36.8 | 228 61 45.0 41.1 Wind Parameters Mean winds (0-6000m): 32.4 at 12.4 knts Storm direction: 62.4 at 9.3 knts Shear (0-3000m) pos: 2.0 neg: 0.0 tot: 2.0 10-3/s Storm rel Dir Shear (0-3000m): 85.8 deg Storm rel helicity (0-3000m) pos: 57.2 neg: -3.2 tot: 54.0 m^2/s^2 ave: 18.0 10^-3 m/s^2 rel: 0.69 Storm rel vorticity (0-3000m) horiz: 4.2 stream: 2.9 10^-3/s Energy-Hel index: 0.02 Bulk Rich Number: 3.31 Bulk Shear: 31.85 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 ------------------------------------------------------------------------------- 500 218 3 236 12| 4.1 0.0 4.1| 5.5 -1.7 3.8 7.5 0.21| 4.8 1.0 1000 240 4 242 13| 2.6 0.0 2.6| 10.9 -2.4 8.6 8.6 0.36| 3.3 1.2 1500 246 4 243 14| 2.0 0.0 2.0| 17.2 -3.2 14.0 9.4 0.45| 2.9 1.3 2000 261 5 249 14| 2.0 0.0 2.0| 36.2 -3.2 33.1 16.5 0.65| 3.5 2.3 2500 282 5 257 14| 1.9 0.0 1.9| 50.9 -3.2 47.8 19.1 0.68| 4.1 2.8 3000 315 6 270 13| 2.0 0.0 2.0| 57.2 -3.2 54.0 18.0 0.69| 4.2 2.9 4000 6 8 294 8| 2.1 0.0 2.1| 67.9 -3.2 64.7 16.2 0.73| 3.9 2.9 5000 27 10 321 6| 2.2 0.0 2.2| 81.9 -3.2 78.7 15.7 0.75| 3.8 2.8 6000 32 12 345 6| 1.8 0.7 2.5| 81.9 -14.4 67.5 11.2 0.56| 3.8 2.1 Wrote GIF file: /home/apache/climate/data/raob//U4641/skewt/U4641.skewt.20251225.00.gif