UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025041612.upa.cvt Date: 1200Z 16 APR 25 Searching for U4688... Searching the city database file for: U4688 ... Date:1200Z 16 APR 25 Station: U4688 WMO ident: 24688 Latitude: 63.27 Longitude: 143.15 ------------------------------------------------------------------------------- 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 35 1 925 653 SFC 915 738 -5.3 -5.4 99 0.1 -5.3 20 3 274.7 275.2 272.6 282.4 2.79 3 911 773 -4.3 -4.5 99 0.2 -4.4 31 3 276.1 276.6 273.7 284.4 3.00 4 888 975 -2.3 -3.2 94 0.9 -2.7 93 5 280.2 280.8 276.5 289.7 3.40 5 857 1256 -5.3 -7.9 82 2.6 -6.2 180 8 279.9 280.4 275.0 286.9 2.46 6 850 1320 -5.7 -8.3 82 2.6 -6.5 200 9 280.2 280.6 275.1 287.0 2.40 7 827 1535 -6.7 -9.7 79 3.0 -7.7 207 9 281.3 281.7 275.5 287.7 2.21 8 708 2728 -15.3 -15.9 95 0.6 -15.4 247 7 284.6 284.9 276.3 289.2 1.56 9 700 2814 -15.9 -16.7 94 0.8 -16.1 250 7 284.9 285.1 276.3 289.3 1.48 10 628 3620 -23.3 -24.1 93 0.8 -23.4 244 16 285.4 285.6 275.6 288.1 0.87 11 618 3737 -23.7 -24.3 95 0.6 -23.8 243 17 286.3 286.4 276.1 288.9 0.87 12 594 4027 -21.9 -25.4 73 3.5 -22.5 240 21 291.6 291.8 278.7 294.2 0.82 13 564 4407 -23.5 -35.5 32 12.0 -24.9 237 25 294.1 294.1 279.1 295.2 0.33 14 500 5280 -27.9 -44.9 18 17.0 -29.3 230 35 299.0 299.0 281.1 299.5 0.14 15 492 5396 -28.7 -46.7 16 18.0 -30.0 230 35 299.4 299.4 281.3 299.8 0.12 16 476 5632 -29.7 -46.7 18 17.0 -31.0 231 35 301.0 301.1 282.0 301.5 0.12 17 400 6850 -38.5 -53.5 19 15.0 -39.2 235 36 305.0 305.0 283.5 305.2 0.07 18 371 7362 -42.9 -56.9 20 14.0 -43.3 235 37 305.7 305.8 283.8 305.9 0.05 19 314 8471 -48.9 -60.9 23 12.0 -49.2 235 38 312.3 312.3 286.2 312.5 0.03 20 300 8770 -48.9 -60.9 23 12.0 -49.2 235 33 316.4 316.4 287.6 316.6 0.04 21 250 9960 -50.5 -63.5 20 13.0 -50.8 245 31 331.0 331.0 292.0 331.1 0.03 22 200 11430 -49.3 -63.3 18 14.0 -49.7 240 25 354.7 354.7 297.7 354.9 0.04 23 153 13171 -48.3 -64.3 14 16.0 -49.0 245 21 384.7 384.7 303.0 384.9 0.04 24 150 13300 -48.7 -63.7 16 15.0 -49.3 245 21 386.2 386.2 303.2 386.4 0.05 25 101 15895 -51.3 -67.3 13 16.0 -52.0 274 11 427.4 427.4 308.6 427.6 0.04 26 100 15960 -51.3 -67.3 13 16.0 -52.0 275 11 428.6 428.6 308.7 428.8 0.04 27 70 18250 -54.5 -70.5 12 16.0 -55.2 275 15 467.8 467.8 312.5 468.0 0.04 28 52 20159 -56.5 -73.5 10 17.0 -57.3 284 17 504.6 504.7 315.3 504.9 0.04 29 50 20410 -56.1 -72.1 12 16.0 -56.9 285 17 511.3 511.3 315.8 511.6 0.05 30 30 23650 -55.5 -72.5 10 17.0 -56.9 280 15 593.3 593.4 320.3 593.9 0.07 31 24 25070 -56.1 -73.1 10 17.0 -57.6 283 19 630.7 630.7 322.0 631.3 0.08 32 20 26240 -51.9 -69.9 10 18.0 -54.6 285 23 677.3 677.4 323.7 678.6 0.16 33 19 26572 -51.1 -69.1 10 18.0 -54.1 282 22 689.8 689.9 324.1 691.4 0.18 34 10 30780 -46.1 -65.1 10 19.0 -52.4 240 9 847.5 847.8 328.5 853.9 0.60 35 7.6 32605 -46.1 -66.1 9 20.0 -53.5 916.7 917.0 329.9 924.6 0.69 TRP 314 8471 -48.9 -60.9 23 12.0 -49.2 235 38 312.3 312.3 286.2 312.5 0.03 WND Sounding variables and indices 1000-500 mb thick: 5245.00 m Freezing level: Surface below freezing Wetbulb zero: Below ground Precipitable water: 0.26 inches Sfc-500 mean rel hum: 73.21 % Est. max temperature: 2.76 C = 36.97 F Sfc-Lift cond lev (LCL): 913.34 mb = 752.64 m = 2469.25 ft T: -4.89 C 700-500 lapse rate: 4.87 C/km ThetaE index: 2.81 C Layer 857.0- 850.0 mb Conv cond level (CCL): 818.75 mb = 1611.66 m = 5287.53 ft Mean mixing ratio: 2.71 g/kg Conv temperature: 1.33 C = 34.40 F Cap Strength: 7.07 C Lifted Index: 10.22 C Risk: None Lifted Index @300 mb: 20.57 C Lifted Index @700 mb: 1.42 C Showalter Index: 10.58 C Risk: None Total Totals Index: 41.80 C Risk: None Vertical Totals Index: 22.20 C Cross Totals Index: 19.60 C K Index: 13.10 Risk: None Sweat Index: 53.00 Risk: None Energy Index: 2.56 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 17.20 J/kg Max Up Vert Vel: 5.87 m/s Conv Inhibition (B-): 73858.43 J/kg Cap Strength: 10.24 C Lift Cond Lev (LCL): 840.25 mb = 1410.26 m = 4626.78 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 261 at 15 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 ---------------------------------------------------------- 0 915 738 20 3 -1.0 -2.8 | 72 17 -16.0 -5.1 1 850 1320 200 9 3.1 8.5 | 118 13 -11.9 6.2 2 700 2814 250 7 6.6 2.4 | 91 8 -8.4 0.1 3 500 5280 230 35 26.8 22.5 | 210 23 11.8 20.2 4 400 6850 235 36 29.5 20.6 | 218 23 14.5 18.4 5 314 8471 235 38 31.1 21.8 | 220 25 16.2 19.5 6 300 8770 235 33 27.0 18.9 | 216 21 12.1 16.7 7 250 9960 245 31 28.1 13.1 | 230 17 13.1 10.8 8 200 11430 240 25 21.7 12.5 | 213 12 6.7 10.2 9 150 13300 245 21 19.0 8.9 | 212 8 4.1 6.6 10 100 15960 275 11 11.0 -1.0 | 51 5 -4.0 -3.2 11 70 18250 275 15 14.9 -1.3 | 0 4 -0.0 -3.6 12 50 20410 285 17 16.4 -4.4 | 348 7 1.4 -6.7 13 30 23650 280 15 14.8 -2.6 | 2 5 -0.2 -4.9 14 20 26240 285 23 22.2 -6.0 | 319 11 7.2 -8.2 15 10 30780 240 9 7.8 4.5 | 107 8 -7.2 2.2 Wind Parameters Mean winds (0-6000m): 231.4 at 20.2 knts Storm direction: 261.4 at 15.1 knts Shear (0-3000m) pos: 1.6 neg: 1.8 tot: 3.4 10-3/s Storm rel Dir Shear (0-3000m): 113.0 deg Storm rel helicity (0-3000m) pos: 84.2 neg: -10.9 tot: 73.3 m^2/s^2 ave: 24.4 10^-3 m/s^2 rel: 0.50 Storm rel vorticity (0-3000m) horiz: 6.4 stream: 3.2 10^-3/s Energy-Hel index: 0.01 Bulk Rich Number: 0.56 Bulk Shear: 30.76 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 ------------------------------------------------------------------------------- 500 208 6 102 13| 11.3 0.0 11.3| 65.6 0.0 65.6 131.2 0.82| 16.2 13.2 1000 205 7 109 13| 5.9 0.0 5.9| 72.8 -1.8 71.0 71.0 0.65| 11.2 7.3 1500 211 7 110 12| 3.6 0.0 3.6| 72.8 -5.7 67.1 44.7 0.52| 8.3 4.3 2000 218 7 109 11| 2.4 0.0 2.4| 72.8 -10.5 62.3 31.2 0.40| 6.8 2.7 2500 225 8 109 10| 1.9 1.0 2.9| 77.7 -10.9 66.8 26.7 0.43| 6.5 2.8 3000 231 9 113 9| 1.6 1.8 3.4| 84.2 -10.9 73.3 24.4 0.50| 6.4 3.2 4000 233 13 137 7| 1.2 2.8 4.0| 93.5 -10.9 82.6 20.6 0.46| 6.3 2.9 5000 231 17 167 9| 1.1 2.9 3.9| 99.7 -11.4 88.2 17.6 0.41| 5.8 2.4 6000 231 20 184 10| 1.0 2.4 3.3|112.6 -11.4 101.1 16.9 0.44| 5.0 2.2 Wrote GIF file: /home/apache/climate/data/raob//U4688/skewt/U4688.skewt.20250416.12.gif