UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025041512.upa.cvt Date: 1200Z 15 APR 25 Searching for U2820... Searching the city database file for: U2820 ... Date:1200Z 15 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 114 12.4 3.4 54 9.0 7.9 270 11 285.5 286.4 281.0 299.3 4.88 1 998 131 13.6 5.6 58 8.0 9.4 270 11 286.9 287.9 282.6 303.0 5.71 2 962 437 9.4 1.4 57 8.0 5.6 275 16 285.7 286.5 280.5 298.2 4.40 3 925 760 7.0 0.0 61 7.0 3.8 280 21 286.5 287.2 280.6 298.2 4.13 4 850 1447 1.2 -3.8 69 5.0 -0.9 280 29 287.4 288.0 280.1 297.2 3.39 5 796 1970 -3.3 -7.5 73 4.2 -4.8 283 29 288.0 288.5 279.6 296.0 2.73 6 708 2885 -9.9 -15.9 61 6.0 -11.6 289 29 290.6 290.9 279.2 295.3 1.56 7 700 2973 -10.3 -17.3 56 7.0 -12.2 290 29 291.1 291.3 279.3 295.4 1.40 8 664 3378 -11.5 -21.5 43 10.0 -13.9 291 33 294.2 294.3 280.2 297.4 1.03 9 621 3887 -16.1 -32.1 24 16.0 -18.7 292 37 294.6 294.6 279.5 295.9 0.42 10 603 4108 -17.5 -34.5 21 17.0 -20.0 292 39 295.4 295.5 279.8 296.6 0.34 11 559 4671 -20.9 -40.9 15 20.0 -23.2 293 44 297.9 297.9 280.7 298.6 0.19 12 551 4778 -19.9 -39.9 15 20.0 -22.4 294 45 300.3 300.4 281.8 301.1 0.22 13 500 5490 -25.7 -48.7 10 23.0 -27.5 295 52 301.7 301.7 282.2 302.0 0.09 14 471 5919 -28.9 -52.9 8 24.0 -30.4 291 53 302.9 302.9 282.7 303.2 0.06 15 450 6242 -32.7 -56.7 7 24.0 -33.8 288 53 302.1 302.1 282.3 302.3 0.04 16 417 6773 -35.9 -58.9 8 23.0 -36.8 283 54 304.7 304.7 283.3 304.8 0.03 17 400 7060 -38.3 -60.3 8 22.0 -39.1 280 54 305.2 305.2 283.5 305.3 0.03 18 329 8369 -50.5 -72.5 6 22.0 -50.8 275 50 306.0 306.0 283.8 306.0 0.01 19 324 8469 -50.7 -72.7 6 22.0 -51.0 274 50 307.1 307.1 284.2 307.1 0.01 20 300 8970 -50.5 -72.5 6 22.0 -50.8 270 50 314.2 314.2 286.8 314.2 0.01 21 277 9490 -50.5 -72.5 6 22.0 -50.8 266 51 321.4 321.4 289.2 321.5 0.01 22 250 10160 -49.9 -72.9 5 23.0 -50.3 260 52 331.9 331.9 292.2 331.9 0.01 23 200 11620 -48.7 -71.7 5 23.0 -49.3 265 40 355.7 355.7 297.8 355.7 0.01 24 165 12885 -48.7 -71.7 5 23.0 -49.3 265 39 375.8 375.8 301.6 375.8 0.01 25 150 13510 -49.7 -72.7 5 23.0 -50.3 265 38 384.4 384.4 302.9 384.5 0.01 26 100 16140 -50.7 -72.7 6 22.0 -51.5 260 29 429.8 429.8 308.8 429.9 0.02 27 88 16972 -51.7 -73.7 5 22.0 -52.5 264 25 443.8 443.8 310.3 443.9 0.02 28 70 18460 -50.7 -72.7 6 22.0 -51.8 270 19 475.9 475.9 313.1 476.1 0.03 29 50 20650 -49.5 -72.5 5 23.0 -51.2 205 5 526.8 526.8 316.8 527.1 0.04 30 30 24004 -48.5 -71.5 5 23.0 -51.3 612.4 612.5 321.2 613.0 0.08 TRP 329 8369 -50.5 -72.5 6 22.0 -50.8 275 50 306.0 306.0 283.8 306.0 0.01 WND Sounding variables and indices 1000-500 mb thick: 5375.90 m Freezing level: 835.60 mb = 1586.56 m = 5205.19 ft Wetbulb zero: 863.92 mb = 1315.02 m = 4314.33 ft Precipitable water: 0.44 inches Sfc-500 mean rel hum: 45.57 % Est. max temperature: 14.25 C = 57.66 F Sfc-Lift cond lev (LCL): 872.58 mb = 1234.03 m = 4048.61 ft T: 3.00 C 700-500 lapse rate: 6.12 C/km ThetaE index: 4.87 C Layer 962.0- 925.0 mb Conv cond level (CCL): 831.12 mb = 1626.09 m = 5334.88 ft Mean mixing ratio: 4.49 g/kg Conv temperature: 14.48 C = 58.07 F Cap Strength: 3.81 C Lifted Index: 3.93 C Risk: None Lifted Index @300 mb: 10.83 C Lifted Index @700 mb: -0.33 C Showalter Index: 5.22 C Risk: None Total Totals Index: 48.80 C Risk: Scattered moderate thunderstorms Vertical Totals Index: 26.90 C Cross Totals Index: 21.90 C K Index: 16.10 Risk: < 20 % chance of thunderstorms Sweat Index: 110.00 Risk: None Energy Index: 1.00 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 15.42 J/kg Max Up Vert Vel: 5.55 m/s Conv Inhibition (B-): 24.49 J/kg Cap Strength: 3.88 C Lift Cond Lev (LCL): 847.46 mb = 1470.87 m = 4825.64 ft Lev Free Conv (LFC): 792.46 mb = 2005.18 m = 6578.60 ft Equ Level (EL): 692.46 mb = 3056.18 m = 10026.72 ft B at Equ Level: 15.38 J/kg Max Parcel Lev (MPL): 652.46 mb = 3511.63 m = 11520.97 ft Wind level data Storm motion: 320 at 26 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 114 270 11 11.0 -0.0 | 163 21 -5.9 19.8 1 1000 112 270 11 11.0 -0.0 | 163 21 -5.9 19.8 2 925 760 280 21 20.7 -3.6 | 193 17 3.8 16.2 3 850 1447 280 29 28.6 -5.0 | 218 19 11.6 14.8 4 700 2973 290 29 27.3 -9.9 | 226 14 10.3 9.9 5 500 5490 295 52 47.1 -22.0 | 274 30 30.2 -2.2 6 400 7060 280 54 53.2 -9.4 | 254 38 36.3 10.4 7 329 8369 275 50 49.8 -4.4 | 245 36 32.9 15.5 8 300 8970 270 50 50.0 -0.0 | 239 39 33.1 19.8 9 250 10160 260 52 51.2 9.0 | 230 45 34.3 28.8 10 200 11620 265 40 39.8 3.5 | 225 33 22.9 23.3 11 150 13510 265 38 37.9 3.3 | 222 31 20.9 23.1 12 100 16140 260 29 28.6 5.0 | 205 27 11.6 24.9 13 70 18460 270 19 19.0 -0.0 | 186 20 2.1 19.8 14 50 20650 205 5 2.1 4.5 | 149 29 -14.8 24.4 Wind Parameters Mean winds (0-6000m): 289.5 at 34.7 knts Storm direction: 319.5 at 26.1 knts Shear (0-3000m) pos: 3.5 neg: 0.0 tot: 3.5 10-3/s Storm rel Dir Shear (0-3000m): 67.5 deg Storm rel helicity (0-3000m) pos: 96.3 neg: 0.0 tot: 96.3 m^2/s^2 ave: 32.1 10^-3 m/s^2 rel: 0.85 Storm rel vorticity (0-3000m) horiz: 4.2 stream: 3.5 10^-3/s Energy-Hel index: 0.01 Bulk Rich Number: 0.27 Bulk Shear: 56.41 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 ------------------------------------------------------------------------------- 500 276 15 173 18| 8.2 0.0 8.2| 36.3 0.0 36.3 72.7 0.91| 8.2 7.5 1000 278 19 185 17| 7.4 0.0 7.4| 64.6 0.0 64.6 64.6 0.94| 7.4 7.0 1500 279 22 195 17| 6.3 0.0 6.3| 82.9 0.0 82.9 55.2 0.93| 6.4 6.0 2000 280 23 201 17| 4.8 0.0 4.8| 86.4 0.0 86.4 43.2 0.89| 5.2 4.7 2500 282 25 206 17| 3.9 0.0 3.9| 89.6 0.0 89.6 35.8 0.86| 4.5 3.9 3000 283 25 209 16| 3.5 0.0 3.5| 96.3 0.0 96.3 32.1 0.85| 4.2 3.5 4000 286 28 218 16| 3.8 0.0 3.8|130.0 0.0 130.0 32.5 0.84| 4.3 3.6 5000 288 31 231 16| 4.0 0.0 4.0|166.3 0.0 166.3 33.3 0.79| 4.4 3.5 6000 290 35 243 18| 3.3 0.5 3.9|179.4 -38.3 141.1 23.5 0.60| 4.4 2.7 Wrote GIF file: /home/apache/climate/data/raob//U2820/skewt/U2820.skewt.20250415.12.gif