UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025042312.upa.cvt Date: 1200Z 23 APR 25 Searching for U4641... Searching the city database file for: U4641 ... Date:1200Z 23 APR 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 1003 113 0.8 -2.5 79 3.3 -0.5 260 3 273.7 274.2 272.5 282.4 3.17 1 1000 137 0.4 -3.3 76 3.7 -1.0 260 3 273.5 274.0 272.2 281.7 2.99 2 925 756 -4.5 -7.2 81 2.7 -5.4 280 13 274.7 275.1 271.9 281.4 2.40 3 876 1183 -6.9 -10.0 79 3.1 -7.8 280 8 276.5 276.9 272.5 282.3 2.04 4 850 1417 -9.1 -12.9 74 3.8 -10.1 280 5 276.6 276.9 271.9 281.4 1.66 5 767 2202 -15.9 -18.1 83 2.2 -16.4 283 5 277.5 277.7 271.7 281.0 1.20 6 762 2251 -14.7 -16.8 84 2.1 -15.2 283 5 279.3 279.6 273.1 283.3 1.35 7 732 2557 -11.7 -17.7 61 6.0 -13.2 284 5 285.9 286.1 276.5 289.7 1.30 8 714 2747 -12.9 -22.9 43 10.0 -15.0 284 5 286.6 286.7 276.2 289.2 0.85 9 700 2898 -13.5 -24.5 39 11.0 -15.7 285 5 287.5 287.7 276.6 289.9 0.75 10 584 4248 -23.7 -35.7 32 12.0 -25.1 250 3 290.9 291.0 277.6 292.0 0.31 11 500 5360 -33.1 -43.1 36 10.0 -33.8 220 1 292.7 292.7 278.3 293.3 0.17 12 400 6890 -46.1 -54.1 40 8.0 -46.3 155 5 295.1 295.1 279.2 295.3 0.06 13 357 7633 -52.1 -59.1 43 7.0 -52.2 155 11 296.8 296.8 280.0 296.9 0.04 14 329 8157 -54.1 -60.1 48 6.0 -54.2 155 15 301.0 301.0 281.8 301.2 0.04 15 307 8602 -52.3 -59.3 43 7.0 -52.4 159 23 309.6 309.6 285.2 309.7 0.04 16 306 8623 -52.3 -59.3 43 7.0 -52.4 159 23 309.9 309.9 285.3 310.0 0.04 17 300 8750 -53.3 -60.3 42 7.0 -53.4 160 25 310.2 310.2 285.4 310.4 0.04 18 250 9930 -51.3 -60.3 33 9.0 -51.5 165 19 329.8 329.8 291.7 330.0 0.05 19 206 11196 -48.7 -60.7 24 12.0 -49.1 165 14 352.7 352.7 297.3 352.9 0.05 20 200 11390 -49.3 -62.3 20 13.0 -49.7 165 13 354.7 354.7 297.7 354.9 0.04 21 153 13141 -50.5 -68.5 10 18.0 -51.0 146 15 380.9 380.9 302.4 381.0 0.02 22 150 13270 -49.5 -67.5 10 18.0 -50.1 145 15 384.8 384.8 303.0 384.9 0.03 23 119 14796 -46.5 -68.5 6 22.0 -47.6 142 13 416.6 416.6 307.3 416.8 0.03 24 103 15747 -50.3 -73.3 5 23.0 -51.1 140 11 426.9 426.9 308.5 427.0 0.02 25 100 15940 -49.5 -72.5 5 23.0 -50.4 140 11 432.1 432.1 309.1 432.2 0.02 26 97 16140 -48.1 -71.1 5 23.0 -49.2 438.6 438.6 309.7 438.7 0.03 27 70 18280 -49.7 -74.7 4 25.0 -51.0 478.1 478.1 313.3 478.2 0.02 28 69 18374 -49.9 -74.9 4 25.0 -51.2 479.6 479.6 313.4 479.7 0.02 TRP 329 8157 -54.1 -60.1 48 6.0 -54.2 155 15 301.0 301.0 281.8 301.2 0.04 WND Sounding variables and indices 1000-500 mb thick: 5223.00 m Freezing level: 993.88 mb = 187.53 m = 615.25 ft Wetbulb zero: Below ground Precipitable water: 0.27 inches Sfc-500 mean rel hum: 55.19 % Est. max temperature: 3.69 C = 38.64 F Sfc-Lift cond lev (LCL): 952.68 mb = 521.87 m = 1712.14 ft T: -2.65 C 700-500 lapse rate: 7.96 C/km ThetaE index: 1.26 C Layer 850.0- 762.0 mb Conv cond level (CCL): 878.87 mb = 1157.13 m = 3796.30 ft Mean mixing ratio: 2.62 g/kg Conv temperature: 3.50 C = 38.30 F Cap Strength: 9.15 C Lifted Index: 9.60 C Risk: None Lifted Index @300 mb: 20.33 C Lifted Index @700 mb: 7.98 C Showalter Index: 9.77 C Risk: None Total Totals Index: 44.20 C Risk: Scattered moderate thunderstorms Vertical Totals Index: 24.00 C Cross Totals Index: 20.20 C K Index: 0.10 Risk: None Sweat Index: 11.00 Risk: None Energy Index: 2.54 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 5.41 J/kg Max Up Vert Vel: 3.29 m/s Conv Inhibition (B-): 25578.61 J/kg Cap Strength: 9.56 C Lift Cond Lev (LCL): 907.04 mb = 909.74 m = 2984.69 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 305 at 3 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 1003 113 260 3 3.0 0.5 | 185 2 0.2 2.5 1 1000 137 260 3 3.0 0.5 | 185 2 0.2 2.5 2 925 756 280 13 12.8 -2.3 | 272 10 10.1 -0.3 3 850 1417 280 5 4.9 -0.9 | 244 2 2.2 1.1 4 700 2898 285 5 4.8 -1.3 | 253 2 2.1 0.6 5 500 5360 220 1 0.6 0.8 | 142 3 -2.1 2.7 6 400 6890 155 5 -2.1 4.5 | 143 8 -4.9 6.5 7 329 8157 155 15 -6.3 13.6 | 150 18 -9.1 15.5 8 300 8750 160 25 -8.6 23.5 | 156 28 -11.3 25.4 9 250 9930 165 19 -4.9 18.4 | 159 22 -7.7 20.3 10 200 11390 165 13 -3.4 12.6 | 157 16 -6.1 14.5 11 150 13270 145 15 -8.6 12.3 | 141 18 -11.3 14.2 12 100 15940 140 11 -7.1 8.4 | 137 14 -9.8 10.4 Wind Parameters Mean winds (0-6000m): 275.3 at 4.5 knts Storm direction: 305.3 at 3.4 knts Shear (0-3000m) pos: 0.4 neg: 0.1 tot: 0.5 10-3/s Storm rel Dir Shear (0-3000m): 52.4 deg Storm rel helicity (0-3000m) pos: 9.5 neg: -3.1 tot: 6.4 m^2/s^2 ave: 2.1 10^-3 m/s^2 rel: 0.24 Storm rel vorticity (0-3000m) horiz: 3.1 stream: 0.8 10^-3/s Energy-Hel index: 0.00 Bulk Rich Number: 8.38 Bulk Shear: 0.65 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 ------------------------------------------------------------------------------- 500 272 7 246 4| 8.1 0.0 8.1| 6.5 0.0 6.5 12.9 0.69| 8.2 5.7 1000 278 9 263 6| 3.1 0.0 3.1| 9.3 -1.4 8.0 8.0 0.44| 7.0 3.1 1500 278 8 261 5| 0.8 0.0 0.8| 9.3 -2.8 6.6 4.4 0.27| 6.0 1.6 2000 279 7 260 4| 0.6 0.0 0.6| 9.4 -2.8 6.7 3.3 0.27| 4.5 1.2 2500 280 7 258 4| 0.5 0.0 0.5| 9.5 -2.8 6.7 2.7 0.28| 3.6 1.0 3000 280 6 257 4| 0.4 0.1 0.5| 9.5 -3.1 6.4 2.1 0.24| 3.1 0.8 4000 279 6 250 3| 0.3 0.4 0.7| 9.5 -4.6 4.9 1.2 0.10| 2.7 0.3 5000 278 5 242 3| 0.3 0.5 0.7| 9.5 -6.1 3.4 0.7 0.01| 2.3 0.0 6000 275 4 228 2| 0.2 0.5 0.7| 10.3 -6.5 3.9 0.6 0.03| 2.2 0.1 Wrote GIF file: /home/apache/climate/data/raob//U4641/skewt/U4641.skewt.20250423.12.gif