UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025042112.upa.cvt Date: 1200Z 21 APR 25 Searching for U2820... Searching the city database file for: U2820 ... Date:1200Z 21 APR 25 Station: U2820 WMO ident: 22820 Latitude: 61.82 Longitude: 34.27 ------------------------------------------------------------------------------- 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 1000 105 6.0 2.4 78 3.6 4.4 20 3 279.1 279.9 277.5 291.7 4.54 1 996 138 7.6 1.6 66 6.0 4.8 21 3 281.1 281.8 278.2 293.1 4.31 2 986 221 5.4 -0.6 65 6.0 2.8 23 4 279.7 280.3 276.6 290.0 3.71 3 942 591 1.6 -2.8 73 4.4 -0.2 31 6 279.5 280.0 276.0 288.7 3.30 4 925 737 1.2 -2.8 75 4.0 -0.4 35 7 280.5 281.1 276.6 290.0 3.36 5 890 1047 0.2 -3.6 76 3.8 -1.3 35 9 282.6 283.2 277.6 291.9 3.29 6 856 1359 1.2 -3.1 73 4.3 -0.6 35 11 286.8 287.4 280.0 297.0 3.55 7 850 1416 1.0 -3.4 72 4.4 -0.9 35 11 287.2 287.8 280.1 297.3 3.50 8 800 1902 0.0 -5.0 69 5.0 -2.0 358 15 291.2 291.7 281.7 300.8 3.29 9 700 2958 -6.1 -10.5 71 4.4 -7.7 275 23 295.7 296.2 282.7 303.2 2.45 10 620 3894 -12.7 -17.7 66 5.0 -14.1 270 27 298.6 298.9 282.8 303.4 1.53 11 607 4055 -12.3 -17.3 66 5.0 -13.7 269 28 300.9 301.2 283.8 306.0 1.62 12 582 4374 -15.7 -21.7 60 6.0 -17.1 267 30 300.6 300.8 283.1 304.3 1.16 13 519 5226 -21.9 -27.9 58 6.0 -22.9 262 34 303.1 303.2 283.6 305.5 0.74 14 510 5355 -21.3 -27.3 58 6.0 -22.4 261 34 305.3 305.5 284.5 308.0 0.80 15 500 5500 -22.7 -29.7 53 7.0 -23.9 260 35 305.4 305.5 284.4 307.6 0.65 16 400 7100 -35.1 -45.1 35 10.0 -35.8 255 44 309.4 309.4 285.3 310.0 0.17 17 389 7293 -36.5 -46.5 35 10.0 -37.1 255 44 310.0 310.0 285.5 310.6 0.15 18 310 8817 -50.5 -61.5 26 11.0 -50.7 255 48 311.2 311.2 285.8 311.4 0.03 19 300 9030 -51.5 -62.5 26 11.0 -51.7 255 48 312.8 312.8 286.4 312.9 0.03 20 298 9073 -52.1 -63.1 25 11.0 -52.3 255 48 312.5 312.5 286.2 312.6 0.03 21 279 9498 -53.7 -64.7 25 11.0 -53.9 252 50 316.1 316.2 287.5 316.2 0.02 22 262 9901 -54.9 -65.9 24 11.0 -55.1 250 52 320.1 320.1 288.8 320.2 0.02 23 250 10200 -55.1 -67.1 21 12.0 -55.3 250 54 324.1 324.2 290.0 324.2 0.02 24 248 10251 -55.1 -67.1 21 12.0 -55.3 250 54 324.9 324.9 290.3 325.0 0.02 25 230 10736 -52.7 -64.7 22 12.0 -52.9 252 51 335.6 335.6 293.3 335.7 0.03 26 200 11640 -52.1 -64.1 22 12.0 -52.4 255 46 350.3 350.3 296.7 350.4 0.03 27 160 13089 -49.5 -62.5 20 13.0 -50.0 263 38 377.7 377.8 301.9 378.0 0.05 28 150 13510 -50.3 -64.3 18 14.0 -50.8 265 36 383.4 383.4 302.8 383.6 0.04 29 110 15525 -53.7 -68.7 14 15.0 -54.2 269 34 412.6 412.6 306.9 412.7 0.03 30 100 16140 -53.5 -68.5 14 15.0 -54.1 270 33 424.4 424.4 308.2 424.6 0.04 31 86 17112 -54.3 -70.3 12 16.0 -54.9 274 29 441.4 441.5 310.0 441.6 0.03 32 70 18440 -52.7 -68.7 13 16.0 -53.5 280 23 471.6 471.7 312.8 472.0 0.05 33 50 20600 -53.3 -71.3 9 18.0 -54.4 295 21 517.9 517.9 316.2 518.2 0.05 34 39 22204 -52.7 -70.7 10 18.0 -54.2 307 18 557.5 557.6 318.5 558.0 0.07 35 37 22543 -54.3 -73.3 8 19.0 -55.6 310 17 561.9 561.9 318.8 562.2 0.05 36 30 23890 -53.9 -73.9 7 20.0 -55.6 320 15 597.7 597.7 320.5 598.1 0.06 37 21 26186 -54.1 -75.1 6 21.0 -56.3 333 17 661.3 661.3 323.2 661.8 0.07 38 20 26500 -53.7 -74.7 6 21.0 -56.1 335 17 671.8 671.8 323.5 672.4 0.08 39 16 27945 -50.3 -72.3 6 22.0 -54.1 727.2 727.2 325.3 728.4 0.14 40 12 29825 -49.9 -72.9 5 23.0 -54.6 790.9 791.0 327.1 792.6 0.17 TRP 262 9901 -54.9 -65.9 24 11.0 -55.1 250 52 320.1 320.1 288.8 320.2 0.02 WND Sounding variables and indices 1000-500 mb thick: 5394.97 m Freezing level: 800.00 mb = 1901.81 m = 6239.47 ft Wetbulb zero: 944.32 mb = 570.60 m = 1872.01 ft Precipitable water: 0.53 inches Sfc-500 mean rel hum: 67.28 % Est. max temperature: 14.04 C = 57.28 F Sfc-Lift cond lev (LCL): 946.18 mb = 554.65 m = 1819.69 ft T: 1.97 C 700-500 lapse rate: 6.53 C/km ThetaE index: 4.36 C Layer 986.0- 925.0 mb Conv cond level (CCL): 703.71 mb = 2916.18 m = 9567.39 ft Mean mixing ratio: 3.51 g/kg Conv temperature: 22.40 C = 72.32 F Cap Strength: 13.66 C Lifted Index: 13.55 C Risk: None Lifted Index @300 mb: 16.16 C Lifted Index @700 mb: 9.52 C Showalter Index: 8.19 C Risk: None Total Totals Index: 43.00 C Risk: None Vertical Totals Index: 23.70 C Cross Totals Index: 19.30 C K Index: 15.90 Risk: < 20 % chance of thunderstorms Sweat Index: 57.00 Risk: None Energy Index: 2.13 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 8.94 J/kg Max Up Vert Vel: 4.23 m/s Conv Inhibition (B-): 54871.24 J/kg Cap Strength: 13.54 C Lift Cond Lev (LCL): 881.59 mb = 1122.90 m = 3684.01 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 303 at 17 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 1000 105 20 3 -1.0 -2.8 | 113 16 -14.9 6.3 1 925 737 35 7 -4.0 -5.7 | 101 18 -17.9 3.4 2 850 1416 35 11 -6.3 -9.0 | 90 20 -20.2 0.1 3 700 2958 275 23 22.9 -2.0 | 232 12 9.0 7.1 4 500 5500 260 35 34.5 6.1 | 234 26 20.6 15.2 5 400 7100 255 44 42.5 11.4 | 234 35 28.6 20.5 6 300 9030 255 48 46.4 12.4 | 236 39 32.5 21.6 7 262 9901 250 52 48.9 17.8 | 232 44 35.0 26.9 8 250 10200 250 54 50.7 18.5 | 233 46 36.9 27.6 9 200 11640 255 46 44.4 11.9 | 235 37 30.6 21.0 10 150 13510 265 36 35.9 3.1 | 241 25 22.0 12.3 11 100 16140 270 33 33.0 -0.0 | 244 21 19.1 9.1 12 70 18440 280 23 22.7 -4.0 | 240 10 8.8 5.1 13 50 20600 295 21 19.0 -8.9 | 267 5 5.2 0.3 14 30 23890 320 15 9.6 -11.5 | 61 5 -4.2 -2.4 15 20 26500 335 17 7.2 -15.4 | 47 9 -6.7 -6.3 Wind Parameters Mean winds (0-6000m): 273.4 at 22.2 knts Storm direction: 303.4 at 16.6 knts Shear (0-3000m) pos: 1.1 neg: 5.1 tot: 6.1 10-3/s Storm rel Dir Shear (0-3000m): 119.7 deg Storm rel helicity (0-3000m) pos: 0.4 neg: -103.4 tot: -102.9 m^2/s^2 ave: -34.3 10^-3 m/s^2 rel: -0.73 Storm rel vorticity (0-3000m) horiz: 8.0 stream: -5.9 10^-3/s Energy-Hel index: 0.00 Bulk Rich Number: 0.11 Bulk Shear: 79.38 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 29 5 108 17| 3.4 0.0 3.4| 0.0 -13.1 -13.1 -26.1 -0.89| 3.4 -3.0 1000 33 6 103 18| 3.3 0.0 3.3| 0.0 -25.6 -25.6 -25.6 -0.87| 3.3 -2.8 1500 32 8 99 18| 2.2 1.5 3.6| 0.0 -48.1 -48.1 -32.0 -0.86| 4.0 -3.4 2000 19 9 91 17| 1.6 3.4 5.0| 0.0 -76.4 -76.4 -38.2 -0.78| 5.7 -4.4 2500 356 11 81 13| 1.3 4.6 5.9| 0.0 -90.9 -90.9 -36.4 -0.77| 7.3 -5.6 3000 326 13 76 7| 1.1 5.1 6.1| 0.4-103.4-102.9 -34.3 -0.73| 8.0 -5.9 4000 295 16 199 2| 0.8 4.5 5.3| 2.9-103.4-100.5 -25.1 -0.64| 6.7 -4.3 5000 281 19 223 7| 0.7 4.1 4.8| 2.9-105.5-102.6 -20.5 -0.59| 6.0 -3.5 6000 273 22 226 11| 0.5 3.9 4.4| 5.4-108.0-102.6 -17.1 -0.53| 5.5 -2.9 Wrote GIF file: /home/apache/climate/data/raob//U2820/skewt/U2820.skewt.20250421.12.gif