UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025121000.upa.cvt Date: 0000Z 10 DEC 25 Searching for U2820... Searching the city database file for: U2820 ... Date:0000Z 10 DEC 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 ------------------------------------------------------------------------------- 0 1000 40 135 1 SFC 991 113 0.8 0.2 96 0.6 0.5 135 1 274.7 275.3 274.2 285.3 3.91 2 960 367 -0.7 -2.0 91 1.3 -1.2 174 5 275.6 276.2 274.0 285.1 3.43 3 931 613 1.2 0.4 94 0.8 0.8 212 8 280.0 280.7 277.5 291.7 4.23 4 925 665 0.8 0.1 95 0.7 0.5 220 9 280.1 280.8 277.5 291.7 4.16 5 850 1340 -2.7 -4.2 89 1.5 -3.3 200 9 283.3 283.9 278.0 292.7 3.29 6 829 1538 -3.9 -5.3 90 1.4 -4.4 202 10 284.1 284.6 278.1 293.0 3.10 7 814 1682 -3.3 -4.9 89 1.6 -3.9 203 10 286.2 286.8 279.4 295.6 3.26 8 700 2857 -11.7 -13.7 85 2.0 -12.3 215 15 289.5 289.9 279.1 295.2 1.89 9 618 3797 -19.1 -22.2 76 3.1 -19.7 219 14 291.5 291.7 279.0 294.8 1.04 10 590 4140 -20.7 -23.7 77 3.0 -21.2 220 14 293.6 293.7 279.8 296.6 0.96 11 500 5340 -30.3 -34.8 65 4.5 -30.8 225 13 296.1 296.2 280.2 297.4 0.40 12 489 5498 -31.7 -36.6 62 4.9 -32.1 225 12 296.3 296.3 280.2 297.4 0.34 13 452 6051 -36.5 -41.2 62 4.7 -36.8 227 10 297.0 297.0 280.3 297.8 0.23 14 400 6890 -42.3 -47.2 59 4.9 -42.5 230 7 300.0 300.0 281.5 300.5 0.14 15 351 7760 -48.7 -53.5 57 4.8 -48.8 269 12 302.8 302.8 282.6 303.1 0.07 16 320 8362 -51.9 -56.4 58 4.5 -52.0 296 16 306.5 306.5 284.1 306.7 0.06 17 305 8673 -51.5 -55.9 59 4.4 -51.6 310 18 311.3 311.3 285.9 311.5 0.06 18 300 8780 -52.5 -57.0 58 4.5 -52.6 315 19 311.3 311.4 285.9 311.6 0.06 19 281 9202 -55.1 -59.4 59 4.3 -55.2 330 19 313.5 313.5 286.6 313.7 0.05 20 250 9950 -56.1 -60.6 57 4.5 -56.2 295 17 322.7 322.7 289.6 322.8 0.04 21 200 11360 -56.9 -61.9 53 5.0 -57.0 295 36 342.7 342.7 295.0 342.9 0.05 22 177 12133 -57.3 -63.3 46 6.0 -57.4 299 39 354.2 354.2 297.5 354.4 0.04 23 150 13170 -60.7 -67.7 39 7.0 -60.8 305 42 365.5 365.5 299.8 365.6 0.03 24 100 15670 -64.9 -72.9 32 8.0 -65.0 305 48 402.3 402.3 305.5 402.4 0.02 25 70 17830 -69.5 -77.5 30 8.0 -69.6 310 52 435.7 435.7 309.4 435.8 0.01 26 50 19820 -72.9 -80.9 29 8.0 -73.0 315 60 471.7 471.7 312.8 471.8 0.01 27 36 21729 -76.7 -84.7 27 8.0 -76.7 310 64 508.3 508.4 315.5 508.4 0.01 28 33 22228 -77.7 -85.7 26 8.0 -77.7 518.5 518.5 316.2 518.5 0.01 TRP 281 9202 -55.1 -59.4 59 4.3 -55.2 330 19 313.5 313.5 286.6 313.7 0.05 WND 36 21729 -76.7 -84.7 27 8.0 -76.7 310 64 508.3 508.4 315.5 508.4 0.01 Sounding variables and indices 1000-500 mb thick: 5300.00 m Freezing level: 974.47 mb = 248.38 m = 814.88 ft Freezing level: 949.32 mb = 457.75 m = 1501.80 ft Freezing level: 907.86 mb = 819.29 m = 2687.91 ft Wetbulb zero: 981.35 mb = 190.98 m = 626.56 ft Precipitable water: 0.48 inches Sfc-500 mean rel hum: 82.63 % Est. max temperature: 9.76 C = 49.57 F Sfc-Lift cond lev (LCL): 981.72 mb = 187.95 m = 616.61 ft T: 0.36 C 700-500 lapse rate: 7.49 C/km ThetaE index: 0.81 C Layer 700.0- 590.0 mb Conv cond level (CCL): 966.78 mb = 310.79 m = 1019.64 ft Mean mixing ratio: 3.85 g/kg Conv temperature: 1.57 C = 34.83 F Cap Strength: 6.00 C Lifted Index: 6.77 C Risk: None Lifted Index @300 mb: 15.98 C Lifted Index @700 mb: 4.69 C Showalter Index: 3.96 C Risk: None Total Totals Index: 53.70 C Risk: Scattered heavy thunderstorms Vertical Totals Index: 27.60 C Cross Totals Index: 26.10 C K Index: 21.40 Risk: 20-40 % chance of thunderstorms Sweat Index: 125.00 Risk: None Energy Index: 0.97 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 31.35 J/kg Max Up Vert Vel: 7.92 m/s Conv Inhibition (B-): 33654.67 J/kg Cap Strength: 6.72 C Lift Cond Lev (LCL): 926.13 mb = 655.18 m = 2149.52 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 247 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 ---------------------------------------------------------- 0 991 113 135 1 -0.7 0.7 | 73 9 -8.9 -2.8 1 925 665 220 9 5.8 6.9 | 145 4 -2.4 3.4 2 850 1340 200 9 3.1 8.5 | 134 7 -5.1 5.0 3 700 2857 215 15 8.6 12.3 | 183 9 0.4 8.8 4 500 5340 225 13 9.2 9.2 | 190 6 1.0 5.7 5 400 6890 230 7 5.4 4.5 | 110 3 -2.8 1.0 6 300 8780 315 19 13.4 -13.4 | 343 18 5.3 -16.9 7 281 9202 330 19 9.5 -16.5 | 356 20 1.3 -19.9 8 250 9950 295 17 15.4 -7.2 | 326 13 7.2 -10.7 9 200 11360 295 36 32.6 -15.2 | 307 31 24.4 -18.7 10 150 13170 305 42 34.4 -24.1 | 316 38 26.2 -27.6 11 100 15670 305 48 39.3 -27.5 | 315 44 31.1 -31.0 12 70 17830 310 52 39.8 -33.4 | 319 49 31.7 -36.9 13 50 19820 315 60 42.4 -42.4 | 323 57 34.2 -45.9 Wind Parameters Mean winds (0-6000m): 216.9 at 11.9 knts Storm direction: 246.9 at 8.9 knts Shear (0-3000m) pos: 2.3 neg: 0.4 tot: 2.7 10-3/s Storm rel Dir Shear (0-3000m): 110.9 deg Storm rel helicity (0-3000m) pos: 32.5 neg: -1.4 tot: 31.0 m^2/s^2 ave: 10.3 10^-3 m/s^2 rel: 0.72 Storm rel vorticity (0-3000m) horiz: 3.6 stream: 2.6 10^-3/s Energy-Hel index: 0.00 Bulk Rich Number: 4.49 Bulk Shear: 6.98 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 ------------------------------------------------------------------------------- 500 213 5 94 6| 8.3 0.0 8.3| 17.7 0.0 17.7 35.4 0.85| 10.0 8.5 1000 214 7 116 5| 4.2 0.6 4.7| 18.9 -0.8 18.1 18.1 0.68| 6.6 4.5 1500 209 8 125 6| 2.8 0.8 3.6| 21.0 -1.4 19.6 13.1 0.63| 5.1 3.2 2000 208 8 133 6| 2.6 0.6 3.2| 25.3 -1.4 23.8 11.9 0.68| 4.4 3.0 2500 209 9 143 6| 2.6 0.5 3.0| 29.8 -1.4 28.4 11.4 0.71| 4.0 2.8 3000 211 10 151 6| 2.3 0.4 2.7| 32.5 -1.4 31.0 10.3 0.72| 3.6 2.6 4000 213 11 161 6| 1.6 0.3 1.9| 33.3 -1.4 31.9 8.0 0.69| 2.8 2.0 5000 215 12 167 6| 1.3 0.2 1.5| 33.9 -1.4 32.5 6.5 0.67| 2.4 1.6 6000 217 12 170 6| 0.8 0.2 1.0| 34.0 -3.5 30.5 5.1 0.52| 2.3 1.2 Wrote GIF file: /home/apache/climate/data/raob//U2820/skewt/U2820.skewt.20251210.00.gif