UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025050112.upa.cvt Date: 1200Z 1 MAY 25 Searching for U4688... Searching the city database file for: U4688 ... Date:1200Z 1 MAY 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 97 1 925 729 50 3 SFC 924 738 0.4 -0.5 94 0.9 0.0 50 3 279.8 280.5 277.1 290.9 3.99 3 887 1064 -1.5 -5.3 75 3.8 -2.9 89 5 281.1 281.6 276.3 289.3 2.90 4 881 1118 -2.1 -6.0 75 3.9 -3.6 96 5 281.1 281.5 276.1 288.9 2.77 5 850 1402 -3.9 -7.6 75 3.7 -5.2 130 7 282.1 282.5 276.3 289.3 2.54 6 820 1685 -5.3 -9.1 75 3.8 -6.6 154 7 283.5 283.9 276.8 290.2 2.34 7 760 2276 -10.1 -13.4 77 3.3 -11.1 205 7 284.5 284.8 276.5 289.8 1.79 8 700 2904 -15.3 -18.6 76 3.3 -16.0 260 7 285.5 285.8 276.3 289.3 1.26 9 693 2980 -16.1 -19.2 77 3.1 -16.8 259 7 285.5 285.7 276.2 289.1 1.21 10 504 5304 -30.9 -36.9 56 6.0 -31.5 231 7 294.7 294.7 279.4 295.8 0.32 11 500 5360 -31.5 -37.5 55 6.0 -32.0 230 7 294.6 294.7 279.4 295.6 0.30 12 400 6890 -43.9 -49.9 51 6.0 -44.1 235 7 297.9 298.0 280.6 298.3 0.10 13 385 7146 -46.1 -52.1 51 6.0 -46.3 238 9 298.3 298.3 280.7 298.6 0.08 14 324 8276 -53.3 -58.3 54 5.0 -53.4 253 16 303.5 303.5 282.8 303.6 0.05 15 300 8770 -54.9 -59.9 54 5.0 -55.0 260 19 308.0 308.0 284.6 308.1 0.04 16 296 8857 -54.9 -59.9 54 5.0 -55.0 261 19 309.1 309.2 285.1 309.3 0.04 17 276 9311 -52.7 -57.7 55 5.0 -52.8 265 17 318.6 318.6 288.3 318.8 0.06 18 258 9753 -50.5 -56.5 49 6.0 -50.7 268 16 328.0 328.0 291.2 328.3 0.07 19 250 9960 -50.9 -56.9 49 6.0 -51.1 270 15 330.4 330.4 291.9 330.7 0.07 20 200 11410 -49.9 -56.9 44 7.0 -50.2 285 13 353.8 353.8 297.5 354.1 0.09 21 150 13300 -50.1 -59.1 34 9.0 -50.5 300 7 383.7 383.8 302.9 384.2 0.09 22 137 13891 -49.9 -59.9 30 10.0 -50.4 302 7 394.2 394.2 304.5 394.6 0.09 23 102 15811 -50.9 -62.9 23 12.0 -51.5 310 7 427.0 427.0 308.6 427.4 0.08 24 100 15940 -50.9 -62.9 23 12.0 -51.5 310 7 429.4 429.4 308.8 429.8 0.08 25 78 17554 -49.3 -62.3 20 13.0 -50.3 233 8 464.3 464.4 312.2 465.0 0.11 26 70 18260 -49.3 -63.3 18 14.0 -50.4 200 9 478.9 478.9 313.4 479.6 0.11 27 50 20460 -49.7 -64.7 16 15.0 -51.2 340 5 526.4 526.4 316.8 527.2 0.13 28 47 20866 -50.1 -66.1 14 16.0 -51.7 353 5 534.8 534.8 317.2 535.5 0.11 29 37 22434 -50.1 -67.1 12 17.0 -52.0 45 6 572.7 572.7 319.3 573.5 0.12 30 36 22613 -50.3 -67.3 12 17.0 -52.2 51 6 576.6 576.7 319.5 577.5 0.12 31 30 23810 -48.9 -66.9 11 18.0 -51.4 90 7 611.3 611.4 321.2 612.5 0.16 32 26 24749 -47.3 -65.3 11 18.0 -50.5 136 7 641.4 641.5 322.4 643.2 0.23 33 24 25275 -47.9 -65.9 11 18.0 -51.1 162 7 654.5 654.6 322.9 656.4 0.23 34 20 26470 -49.3 -68.3 9 19.0 -52.7 220 7 685.3 685.4 324.0 686.9 0.19 35 19 26806 -49.5 -68.5 9 19.0 -52.9 694.8 694.9 324.3 696.5 0.20 36 17 27539 -46.7 -66.7 8 20.0 -51.3 726.2 726.3 325.3 728.8 0.29 TRP 300 8770 -54.9 -59.9 54 5.0 -55.0 260 19 308.0 308.0 284.6 308.1 0.04 WND Sounding variables and indices 1000-500 mb thick: 5263.00 m Freezing level: 916.21 mb = 806.44 m = 2645.76 ft Wetbulb zero: 923.75 mb = 739.84 m = 2427.26 ft Precipitable water: 0.29 inches Sfc-500 mean rel hum: 71.12 % Est. max temperature: 4.78 C = 40.61 F Sfc-Lift cond lev (LCL): 910.99 mb = 851.00 m = 2791.95 ft T: -0.26 C 700-500 lapse rate: 6.60 C/km ThetaE index: 1.97 C Layer 887.0- 850.0 mb Conv cond level (CCL): 802.30 mb = 1854.63 m = 6084.68 ft Mean mixing ratio: 2.89 g/kg Conv temperature: 4.31 C = 39.75 F Cap Strength: 5.12 C Lifted Index: 4.98 C Risk: None Lifted Index @300 mb: 13.05 C Lifted Index @700 mb: 0.56 C Showalter Index: 5.22 C Risk: None Total Totals Index: 51.50 C Risk: Scattered heavy thunderstorms Vertical Totals Index: 27.60 C Cross Totals Index: 23.90 C K Index: 16.70 Risk: < 20 % chance of thunderstorms Sweat Index: 71.00 Risk: None Energy Index: 1.27 Risk: None Parcel Indices Parcel: using 100 mb layer CAPE (B+): 11.87 J/kg Max Up Vert Vel: 4.87 m/s Conv Inhibition (B-): 55739.46 J/kg Cap Strength: 5.02 C Lift Cond Lev (LCL): 830.83 mb = 1581.59 m = 5188.87 ft Lev Free Conv (LFC): -1.00 mb = -9999.00 m = -9999.00 ft Wind level data Storm motion: 260 at 5 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 ---------------------------------------------------------- 0 924 738 50 3 -2.3 -1.9 | 69 8 -7.3 -2.8 1 850 1402 130 7 -5.4 4.5 | 109 11 -10.4 3.6 2 700 2904 260 7 6.9 1.2 | 259 2 1.9 0.4 3 500 5360 230 7 5.4 4.5 | 185 4 0.3 3.6 4 400 6890 235 7 5.7 4.0 | 193 3 0.7 3.2 5 300 8770 260 19 18.7 3.3 | 260 14 13.7 2.4 6 250 9960 270 15 15.0 -0.0 | 275 10 10.0 -0.9 7 200 11410 285 13 12.6 -3.4 | 299 9 7.5 -4.2 8 150 13300 300 7 6.1 -3.5 | 347 4 1.0 -4.4 9 100 15940 310 7 5.4 -4.5 | 356 5 0.3 -5.4 10 70 18260 200 9 3.1 8.5 | 166 8 -1.9 7.6 11 50 20460 340 5 1.7 -4.7 | 31 6 -3.3 -5.5 12 30 23810 90 7 -7.0 0.0 | 86 12 -12.0 -0.9 13 20 26470 220 7 4.5 5.4 | 173 5 -0.5 4.5 Wind Parameters Mean winds (0-6000m): 230.4 at 6.8 knts Storm direction: 260.4 at 5.1 knts Shear (0-3000m) pos: 1.7 neg: 0.1 tot: 1.8 10-3/s Storm rel Dir Shear (0-3000m): 155.4 deg Storm rel helicity (0-3000m) pos: 41.0 neg: -0.6 tot: 40.4 m^2/s^2 ave: 13.5 10^-3 m/s^2 rel: 0.74 Storm rel vorticity (0-3000m) horiz: 4.3 stream: 3.2 10^-3/s Energy-Hel index: 0.00 Bulk Rich Number: 0.85 Bulk Shear: 13.95 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 ------------------------------------------------------------------------------- 500 100 4 90 9| 5.4 0.0 5.4| 11.9 0.0 11.9 23.7 0.82| 5.8 4.7 1000 125 6 104 10| 4.4 0.0 4.4| 27.4 0.0 27.4 27.4 0.88| 6.0 5.3 1500 146 6 116 9| 3.3 0.0 3.3| 35.9 0.0 35.9 24.0 0.85| 5.8 4.9 2000 162 6 127 9| 2.6 0.0 2.6| 40.1 0.0 40.1 20.0 0.82| 5.7 4.7 2500 188 6 143 7| 2.0 0.0 2.0| 41.0 -0.2 40.7 16.3 0.79| 5.0 4.0 3000 211 7 161 5| 1.7 0.1 1.8| 41.0 -0.6 40.4 13.5 0.74| 4.3 3.2 4000 227 7 178 4| 1.3 0.3 1.5| 41.0 -1.5 39.5 9.9 0.65| 3.4 2.2 5000 230 7 182 4| 1.0 0.3 1.3| 41.1 -2.0 39.0 7.8 0.61| 2.8 1.7 6000 230 7 183 3| 0.8 0.3 1.1| 41.3 -2.0 39.3 6.5 0.61| 2.4 1.5 Wrote GIF file: /home/apache/climate/data/raob//U4688/skewt/U4688.skewt.20250501.12.gif